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Commit | Line | Data |
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c1bb9350 LT |
1 | /* |
2 | * apply.c | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | * | |
6 | * This applies patches on top of some (arbitrary) version of the SCM. | |
7 | * | |
c1bb9350 | 8 | */ |
c1bb9350 | 9 | #include "cache.h" |
03ac6e64 | 10 | #include "cache-tree.h" |
22943f1a | 11 | #include "quote.h" |
8e440259 | 12 | #include "blob.h" |
051308f6 | 13 | #include "delta.h" |
ac6245e3 | 14 | #include "builtin.h" |
c1bb9350 | 15 | |
a9486b02 PR |
16 | /* |
17 | * --check turns on checking that the working tree matches the | |
18 | * files that are being modified, but doesn't apply the patch | |
19 | * --stat does just a diffstat, and doesn't actually apply | |
20 | * --numstat does numeric diffstat, and doesn't actually apply | |
21 | * --index-info shows the old and new index info for paths if available. | |
22 | * --index updates the cache as well. | |
23 | * --cached updates only the cache without ever touching the working tree. | |
24 | */ | |
edf2e370 JH |
25 | static const char *prefix; |
26 | static int prefix_length = -1; | |
dbd0f7d3 | 27 | static int newfd = -1; |
edf2e370 | 28 | |
4be60962 | 29 | static int unidiff_zero; |
e36f8b60 | 30 | static int p_value = 1; |
3e8a5db9 | 31 | static int p_value_known; |
96f1e58f | 32 | static int check_index; |
7da3bf37 | 33 | static int update_index; |
96f1e58f DR |
34 | static int cached; |
35 | static int diffstat; | |
36 | static int numstat; | |
37 | static int summary; | |
38 | static int check; | |
a577284a | 39 | static int apply = 1; |
96f1e58f | 40 | static int apply_in_reverse; |
57dc397c | 41 | static int apply_with_reject; |
a2bf404e | 42 | static int apply_verbosely; |
96f1e58f | 43 | static int no_add; |
7a988699 | 44 | static const char *fake_ancestor; |
22943f1a | 45 | static int line_termination = '\n'; |
bf8675d3 | 46 | static unsigned long p_context = ULONG_MAX; |
12dd6e8c | 47 | static const char apply_usage[] = |
91af7ae5 | 48 | "git-apply [--stat] [--numstat] [--summary] [--check] [--index] [--cached] [--apply] [--no-add] [--index-info] [--allow-binary-replacement] [--reverse] [--reject] [--verbose] [-z] [-pNUM] [-CNUM] [--whitespace=<nowarn|warn|fix|error|error-all>] <patch>..."; |
c1bb9350 | 49 | |
81bf96bb JH |
50 | static enum ws_error_action { |
51 | nowarn_ws_error, | |
52 | warn_on_ws_error, | |
53 | die_on_ws_error, | |
54 | correct_ws_error, | |
55 | } ws_error_action = warn_on_ws_error; | |
96f1e58f | 56 | static int whitespace_error; |
fc96b7c9 | 57 | static int squelch_whitespace_errors = 5; |
c94bf41c | 58 | static int applied_after_fixing_ws; |
96f1e58f | 59 | static const char *patch_input_file; |
19bfcd5a | 60 | |
2ae1c53b JH |
61 | static void parse_whitespace_option(const char *option) |
62 | { | |
63 | if (!option) { | |
81bf96bb | 64 | ws_error_action = warn_on_ws_error; |
2ae1c53b JH |
65 | return; |
66 | } | |
67 | if (!strcmp(option, "warn")) { | |
81bf96bb | 68 | ws_error_action = warn_on_ws_error; |
2ae1c53b JH |
69 | return; |
70 | } | |
621603b7 | 71 | if (!strcmp(option, "nowarn")) { |
81bf96bb | 72 | ws_error_action = nowarn_ws_error; |
621603b7 JH |
73 | return; |
74 | } | |
2ae1c53b | 75 | if (!strcmp(option, "error")) { |
81bf96bb | 76 | ws_error_action = die_on_ws_error; |
2ae1c53b JH |
77 | return; |
78 | } | |
79 | if (!strcmp(option, "error-all")) { | |
81bf96bb | 80 | ws_error_action = die_on_ws_error; |
2ae1c53b JH |
81 | squelch_whitespace_errors = 0; |
82 | return; | |
83 | } | |
81bf96bb JH |
84 | if (!strcmp(option, "strip") || !strcmp(option, "fix")) { |
85 | ws_error_action = correct_ws_error; | |
2ae1c53b JH |
86 | return; |
87 | } | |
88 | die("unrecognized whitespace option '%s'", option); | |
89 | } | |
90 | ||
f21d6726 JH |
91 | static void set_default_whitespace_mode(const char *whitespace_option) |
92 | { | |
81bf96bb JH |
93 | if (!whitespace_option && !apply_default_whitespace) |
94 | ws_error_action = (apply ? warn_on_ws_error : nowarn_ws_error); | |
f21d6726 JH |
95 | } |
96 | ||
3f40315a LT |
97 | /* |
98 | * For "diff-stat" like behaviour, we keep track of the biggest change | |
99 | * we've seen, and the longest filename. That allows us to do simple | |
100 | * scaling. | |
101 | */ | |
102 | static int max_change, max_len; | |
103 | ||
a4acb0eb LT |
104 | /* |
105 | * Various "current state", notably line numbers and what | |
106 | * file (and how) we're patching right now.. The "is_xxxx" | |
107 | * things are flags, where -1 means "don't know yet". | |
108 | */ | |
46979f56 | 109 | static int linenr = 1; |
19c58fb8 | 110 | |
3cd4f5e8 JH |
111 | /* |
112 | * This represents one "hunk" from a patch, starting with | |
113 | * "@@ -oldpos,oldlines +newpos,newlines @@" marker. The | |
114 | * patch text is pointed at by patch, and its byte length | |
115 | * is stored in size. leading and trailing are the number | |
116 | * of context lines. | |
117 | */ | |
19c58fb8 | 118 | struct fragment { |
47495887 | 119 | unsigned long leading, trailing; |
19c58fb8 LT |
120 | unsigned long oldpos, oldlines; |
121 | unsigned long newpos, newlines; | |
122 | const char *patch; | |
123 | int size; | |
57dc397c | 124 | int rejected; |
19c58fb8 LT |
125 | struct fragment *next; |
126 | }; | |
127 | ||
3cd4f5e8 JH |
128 | /* |
129 | * When dealing with a binary patch, we reuse "leading" field | |
130 | * to store the type of the binary hunk, either deflated "delta" | |
131 | * or deflated "literal". | |
132 | */ | |
133 | #define binary_patch_method leading | |
134 | #define BINARY_DELTA_DEFLATED 1 | |
135 | #define BINARY_LITERAL_DEFLATED 2 | |
136 | ||
81bf96bb JH |
137 | /* |
138 | * This represents a "patch" to a file, both metainfo changes | |
139 | * such as creation/deletion, filemode and content changes represented | |
140 | * as a series of fragments. | |
141 | */ | |
19c58fb8 | 142 | struct patch { |
5041aa70 | 143 | char *new_name, *old_name, *def_name; |
19c58fb8 | 144 | unsigned int old_mode, new_mode; |
3dad11bf | 145 | int is_new, is_delete; /* -1 = unknown, 0 = false, 1 = true */ |
57dc397c | 146 | int rejected; |
cf1b7869 | 147 | unsigned ws_rule; |
0660626c | 148 | unsigned long deflate_origlen; |
3f40315a | 149 | int lines_added, lines_deleted; |
96c912a4 | 150 | int score; |
9987d7c5 | 151 | unsigned int is_toplevel_relative:1; |
3dad11bf RS |
152 | unsigned int inaccurate_eof:1; |
153 | unsigned int is_binary:1; | |
154 | unsigned int is_copy:1; | |
155 | unsigned int is_rename:1; | |
19c58fb8 | 156 | struct fragment *fragments; |
5aa7d94c | 157 | char *result; |
c32f749f | 158 | size_t resultsize; |
2cf67f1e JH |
159 | char old_sha1_prefix[41]; |
160 | char new_sha1_prefix[41]; | |
19c58fb8 LT |
161 | struct patch *next; |
162 | }; | |
46979f56 | 163 | |
81bf96bb JH |
164 | static void say_patch_name(FILE *output, const char *pre, |
165 | struct patch *patch, const char *post) | |
a2bf404e JH |
166 | { |
167 | fputs(pre, output); | |
168 | if (patch->old_name && patch->new_name && | |
169 | strcmp(patch->old_name, patch->new_name)) { | |
663af342 | 170 | quote_c_style(patch->old_name, NULL, output, 0); |
a2bf404e | 171 | fputs(" => ", output); |
663af342 PH |
172 | quote_c_style(patch->new_name, NULL, output, 0); |
173 | } else { | |
a2bf404e JH |
174 | const char *n = patch->new_name; |
175 | if (!n) | |
176 | n = patch->old_name; | |
663af342 | 177 | quote_c_style(n, NULL, output, 0); |
a2bf404e JH |
178 | } |
179 | fputs(post, output); | |
180 | } | |
181 | ||
c1bb9350 | 182 | #define CHUNKSIZE (8192) |
a4acb0eb | 183 | #define SLOP (16) |
c1bb9350 | 184 | |
9a76adeb | 185 | static void read_patch_file(struct strbuf *sb, int fd) |
c1bb9350 | 186 | { |
9a76adeb | 187 | if (strbuf_read(sb, fd, 0) < 0) |
af6eb822 | 188 | die("git-apply: read returned %s", strerror(errno)); |
a4acb0eb LT |
189 | |
190 | /* | |
191 | * Make sure that we have some slop in the buffer | |
192 | * so that we can do speculative "memcmp" etc, and | |
193 | * see to it that it is NUL-filled. | |
194 | */ | |
9a76adeb PH |
195 | strbuf_grow(sb, SLOP); |
196 | memset(sb->buf + sb->len, 0, SLOP); | |
c1bb9350 LT |
197 | } |
198 | ||
3cca928d | 199 | static unsigned long linelen(const char *buffer, unsigned long size) |
c1bb9350 LT |
200 | { |
201 | unsigned long len = 0; | |
202 | while (size--) { | |
203 | len++; | |
204 | if (*buffer++ == '\n') | |
205 | break; | |
206 | } | |
207 | return len; | |
208 | } | |
209 | ||
a4acb0eb LT |
210 | static int is_dev_null(const char *str) |
211 | { | |
212 | return !memcmp("/dev/null", str, 9) && isspace(str[9]); | |
213 | } | |
214 | ||
381ca9a3 LT |
215 | #define TERM_SPACE 1 |
216 | #define TERM_TAB 2 | |
9a4a100e LT |
217 | |
218 | static int name_terminate(const char *name, int namelen, int c, int terminate) | |
219 | { | |
220 | if (c == ' ' && !(terminate & TERM_SPACE)) | |
221 | return 0; | |
222 | if (c == '\t' && !(terminate & TERM_TAB)) | |
223 | return 0; | |
224 | ||
9a4a100e LT |
225 | return 1; |
226 | } | |
227 | ||
56185f49 | 228 | static char *find_name(const char *line, char *def, int p_value, int terminate) |
c1bb9350 | 229 | { |
a4acb0eb LT |
230 | int len; |
231 | const char *start = line; | |
a4acb0eb | 232 | |
22943f1a | 233 | if (*line == '"') { |
7fb1011e PH |
234 | struct strbuf name; |
235 | ||
81bf96bb JH |
236 | /* |
237 | * Proposed "new-style" GNU patch/diff format; see | |
22943f1a JH |
238 | * http://marc.theaimsgroup.com/?l=git&m=112927316408690&w=2 |
239 | */ | |
7fb1011e PH |
240 | strbuf_init(&name, 0); |
241 | if (!unquote_c_style(&name, line, NULL)) { | |
242 | char *cp; | |
243 | ||
244 | for (cp = name.buf; p_value; p_value--) { | |
3d845d77 | 245 | cp = strchr(cp, '/'); |
22943f1a JH |
246 | if (!cp) |
247 | break; | |
248 | cp++; | |
22943f1a JH |
249 | } |
250 | if (cp) { | |
251 | /* name can later be freed, so we need | |
252 | * to memmove, not just return cp | |
253 | */ | |
7fb1011e | 254 | strbuf_remove(&name, 0, cp - name.buf); |
22943f1a | 255 | free(def); |
b315c5c0 | 256 | return strbuf_detach(&name, NULL); |
22943f1a JH |
257 | } |
258 | } | |
7fb1011e | 259 | strbuf_release(&name); |
22943f1a JH |
260 | } |
261 | ||
c1bb9350 | 262 | for (;;) { |
a4acb0eb | 263 | char c = *line; |
9a4a100e LT |
264 | |
265 | if (isspace(c)) { | |
266 | if (c == '\n') | |
267 | break; | |
268 | if (name_terminate(start, line-start, c, terminate)) | |
269 | break; | |
270 | } | |
a4acb0eb LT |
271 | line++; |
272 | if (c == '/' && !--p_value) | |
273 | start = line; | |
274 | } | |
275 | if (!start) | |
276 | return def; | |
277 | len = line - start; | |
278 | if (!len) | |
279 | return def; | |
280 | ||
281 | /* | |
282 | * Generally we prefer the shorter name, especially | |
283 | * if the other one is just a variation of that with | |
284 | * something else tacked on to the end (ie "file.orig" | |
285 | * or "file~"). | |
286 | */ | |
287 | if (def) { | |
288 | int deflen = strlen(def); | |
289 | if (deflen < len && !strncmp(start, def, deflen)) | |
290 | return def; | |
ca032835 | 291 | free(def); |
c1bb9350 | 292 | } |
a4acb0eb | 293 | |
182af834 | 294 | return xmemdupz(start, len); |
a4acb0eb LT |
295 | } |
296 | ||
3e8a5db9 JH |
297 | static int count_slashes(const char *cp) |
298 | { | |
299 | int cnt = 0; | |
300 | char ch; | |
301 | ||
302 | while ((ch = *cp++)) | |
303 | if (ch == '/') | |
304 | cnt++; | |
305 | return cnt; | |
306 | } | |
307 | ||
308 | /* | |
309 | * Given the string after "--- " or "+++ ", guess the appropriate | |
310 | * p_value for the given patch. | |
311 | */ | |
312 | static int guess_p_value(const char *nameline) | |
313 | { | |
314 | char *name, *cp; | |
315 | int val = -1; | |
316 | ||
317 | if (is_dev_null(nameline)) | |
318 | return -1; | |
319 | name = find_name(nameline, NULL, 0, TERM_SPACE | TERM_TAB); | |
320 | if (!name) | |
321 | return -1; | |
322 | cp = strchr(name, '/'); | |
323 | if (!cp) | |
324 | val = 0; | |
325 | else if (prefix) { | |
326 | /* | |
327 | * Does it begin with "a/$our-prefix" and such? Then this is | |
328 | * very likely to apply to our directory. | |
329 | */ | |
330 | if (!strncmp(name, prefix, prefix_length)) | |
331 | val = count_slashes(prefix); | |
332 | else { | |
333 | cp++; | |
334 | if (!strncmp(cp, prefix, prefix_length)) | |
335 | val = count_slashes(prefix) + 1; | |
336 | } | |
337 | } | |
338 | free(name); | |
339 | return val; | |
340 | } | |
341 | ||
a4acb0eb LT |
342 | /* |
343 | * Get the name etc info from the --/+++ lines of a traditional patch header | |
344 | * | |
9a4a100e LT |
345 | * FIXME! The end-of-filename heuristics are kind of screwy. For existing |
346 | * files, we can happily check the index for a match, but for creating a | |
347 | * new file we should try to match whatever "patch" does. I have no idea. | |
a4acb0eb | 348 | */ |
19c58fb8 | 349 | static void parse_traditional_patch(const char *first, const char *second, struct patch *patch) |
a4acb0eb | 350 | { |
a4acb0eb LT |
351 | char *name; |
352 | ||
a9486b02 PR |
353 | first += 4; /* skip "--- " */ |
354 | second += 4; /* skip "+++ " */ | |
3e8a5db9 JH |
355 | if (!p_value_known) { |
356 | int p, q; | |
357 | p = guess_p_value(first); | |
358 | q = guess_p_value(second); | |
359 | if (p < 0) p = q; | |
360 | if (0 <= p && p == q) { | |
361 | p_value = p; | |
362 | p_value_known = 1; | |
363 | } | |
364 | } | |
a4acb0eb | 365 | if (is_dev_null(first)) { |
19c58fb8 LT |
366 | patch->is_new = 1; |
367 | patch->is_delete = 0; | |
5041aa70 | 368 | name = find_name(second, NULL, p_value, TERM_SPACE | TERM_TAB); |
19c58fb8 | 369 | patch->new_name = name; |
a4acb0eb | 370 | } else if (is_dev_null(second)) { |
19c58fb8 LT |
371 | patch->is_new = 0; |
372 | patch->is_delete = 1; | |
381ca9a3 | 373 | name = find_name(first, NULL, p_value, TERM_SPACE | TERM_TAB); |
19c58fb8 | 374 | patch->old_name = name; |
a4acb0eb | 375 | } else { |
381ca9a3 LT |
376 | name = find_name(first, NULL, p_value, TERM_SPACE | TERM_TAB); |
377 | name = find_name(second, name, p_value, TERM_SPACE | TERM_TAB); | |
19c58fb8 | 378 | patch->old_name = patch->new_name = name; |
a4acb0eb LT |
379 | } |
380 | if (!name) | |
381 | die("unable to find filename in patch at line %d", linenr); | |
a4acb0eb LT |
382 | } |
383 | ||
19c58fb8 | 384 | static int gitdiff_hdrend(const char *line, struct patch *patch) |
a4acb0eb LT |
385 | { |
386 | return -1; | |
387 | } | |
388 | ||
1e3f6b6e LT |
389 | /* |
390 | * We're anal about diff header consistency, to make | |
391 | * sure that we don't end up having strange ambiguous | |
392 | * patches floating around. | |
393 | * | |
394 | * As a result, gitdiff_{old|new}name() will check | |
395 | * their names against any previous information, just | |
396 | * to make sure.. | |
397 | */ | |
398 | static char *gitdiff_verify_name(const char *line, int isnull, char *orig_name, const char *oldnew) | |
399 | { | |
1e3f6b6e | 400 | if (!orig_name && !isnull) |
79ee194e | 401 | return find_name(line, NULL, p_value, TERM_TAB); |
1e3f6b6e | 402 | |
1e3f6b6e | 403 | if (orig_name) { |
22943f1a JH |
404 | int len; |
405 | const char *name; | |
406 | char *another; | |
1e3f6b6e LT |
407 | name = orig_name; |
408 | len = strlen(name); | |
409 | if (isnull) | |
410 | die("git-apply: bad git-diff - expected /dev/null, got %s on line %d", name, linenr); | |
79ee194e | 411 | another = find_name(line, NULL, p_value, TERM_TAB); |
22943f1a JH |
412 | if (!another || memcmp(another, name, len)) |
413 | die("git-apply: bad git-diff - inconsistent %s filename on line %d", oldnew, linenr); | |
414 | free(another); | |
1e3f6b6e LT |
415 | return orig_name; |
416 | } | |
22943f1a JH |
417 | else { |
418 | /* expect "/dev/null" */ | |
419 | if (memcmp("/dev/null", line, 9) || line[9] != '\n') | |
420 | die("git-apply: bad git-diff - expected /dev/null on line %d", linenr); | |
421 | return NULL; | |
422 | } | |
1e3f6b6e LT |
423 | } |
424 | ||
19c58fb8 | 425 | static int gitdiff_oldname(const char *line, struct patch *patch) |
a4acb0eb | 426 | { |
19c58fb8 | 427 | patch->old_name = gitdiff_verify_name(line, patch->is_new, patch->old_name, "old"); |
a4acb0eb LT |
428 | return 0; |
429 | } | |
430 | ||
19c58fb8 | 431 | static int gitdiff_newname(const char *line, struct patch *patch) |
a4acb0eb | 432 | { |
19c58fb8 | 433 | patch->new_name = gitdiff_verify_name(line, patch->is_delete, patch->new_name, "new"); |
a4acb0eb LT |
434 | return 0; |
435 | } | |
436 | ||
19c58fb8 | 437 | static int gitdiff_oldmode(const char *line, struct patch *patch) |
a4acb0eb | 438 | { |
19c58fb8 | 439 | patch->old_mode = strtoul(line, NULL, 8); |
a4acb0eb LT |
440 | return 0; |
441 | } | |
442 | ||
19c58fb8 | 443 | static int gitdiff_newmode(const char *line, struct patch *patch) |
a4acb0eb | 444 | { |
19c58fb8 | 445 | patch->new_mode = strtoul(line, NULL, 8); |
a4acb0eb LT |
446 | return 0; |
447 | } | |
448 | ||
19c58fb8 | 449 | static int gitdiff_delete(const char *line, struct patch *patch) |
a4acb0eb | 450 | { |
19c58fb8 | 451 | patch->is_delete = 1; |
5041aa70 | 452 | patch->old_name = patch->def_name; |
19c58fb8 | 453 | return gitdiff_oldmode(line, patch); |
a4acb0eb LT |
454 | } |
455 | ||
19c58fb8 | 456 | static int gitdiff_newfile(const char *line, struct patch *patch) |
a4acb0eb | 457 | { |
19c58fb8 | 458 | patch->is_new = 1; |
5041aa70 | 459 | patch->new_name = patch->def_name; |
19c58fb8 | 460 | return gitdiff_newmode(line, patch); |
a4acb0eb LT |
461 | } |
462 | ||
19c58fb8 | 463 | static int gitdiff_copysrc(const char *line, struct patch *patch) |
a4acb0eb | 464 | { |
19c58fb8 LT |
465 | patch->is_copy = 1; |
466 | patch->old_name = find_name(line, NULL, 0, 0); | |
a4acb0eb LT |
467 | return 0; |
468 | } | |
469 | ||
19c58fb8 | 470 | static int gitdiff_copydst(const char *line, struct patch *patch) |
a4acb0eb | 471 | { |
19c58fb8 LT |
472 | patch->is_copy = 1; |
473 | patch->new_name = find_name(line, NULL, 0, 0); | |
a4acb0eb LT |
474 | return 0; |
475 | } | |
476 | ||
19c58fb8 | 477 | static int gitdiff_renamesrc(const char *line, struct patch *patch) |
a4acb0eb | 478 | { |
19c58fb8 LT |
479 | patch->is_rename = 1; |
480 | patch->old_name = find_name(line, NULL, 0, 0); | |
a4acb0eb LT |
481 | return 0; |
482 | } | |
483 | ||
19c58fb8 | 484 | static int gitdiff_renamedst(const char *line, struct patch *patch) |
a4acb0eb | 485 | { |
19c58fb8 LT |
486 | patch->is_rename = 1; |
487 | patch->new_name = find_name(line, NULL, 0, 0); | |
a4acb0eb LT |
488 | return 0; |
489 | } | |
490 | ||
19c58fb8 | 491 | static int gitdiff_similarity(const char *line, struct patch *patch) |
a4acb0eb | 492 | { |
96c912a4 JH |
493 | if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX) |
494 | patch->score = 0; | |
a4acb0eb | 495 | return 0; |
c1bb9350 LT |
496 | } |
497 | ||
70aadac0 JH |
498 | static int gitdiff_dissimilarity(const char *line, struct patch *patch) |
499 | { | |
96c912a4 JH |
500 | if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX) |
501 | patch->score = 0; | |
70aadac0 JH |
502 | return 0; |
503 | } | |
504 | ||
2cf67f1e JH |
505 | static int gitdiff_index(const char *line, struct patch *patch) |
506 | { | |
81bf96bb JH |
507 | /* |
508 | * index line is N hexadecimal, "..", N hexadecimal, | |
2cf67f1e JH |
509 | * and optional space with octal mode. |
510 | */ | |
511 | const char *ptr, *eol; | |
512 | int len; | |
513 | ||
514 | ptr = strchr(line, '.'); | |
9add69b1 | 515 | if (!ptr || ptr[1] != '.' || 40 < ptr - line) |
2cf67f1e JH |
516 | return 0; |
517 | len = ptr - line; | |
518 | memcpy(patch->old_sha1_prefix, line, len); | |
519 | patch->old_sha1_prefix[len] = 0; | |
520 | ||
521 | line = ptr + 2; | |
522 | ptr = strchr(line, ' '); | |
523 | eol = strchr(line, '\n'); | |
524 | ||
525 | if (!ptr || eol < ptr) | |
526 | ptr = eol; | |
527 | len = ptr - line; | |
528 | ||
9add69b1 | 529 | if (40 < len) |
2cf67f1e JH |
530 | return 0; |
531 | memcpy(patch->new_sha1_prefix, line, len); | |
532 | patch->new_sha1_prefix[len] = 0; | |
533 | if (*ptr == ' ') | |
534 | patch->new_mode = patch->old_mode = strtoul(ptr+1, NULL, 8); | |
535 | return 0; | |
536 | } | |
537 | ||
9a4a100e LT |
538 | /* |
539 | * This is normal for a diff that doesn't change anything: we'll fall through | |
540 | * into the next diff. Tell the parser to break out. | |
541 | */ | |
19c58fb8 | 542 | static int gitdiff_unrecognized(const char *line, struct patch *patch) |
9a4a100e LT |
543 | { |
544 | return -1; | |
545 | } | |
546 | ||
22943f1a JH |
547 | static const char *stop_at_slash(const char *line, int llen) |
548 | { | |
549 | int i; | |
550 | ||
551 | for (i = 0; i < llen; i++) { | |
552 | int ch = line[i]; | |
553 | if (ch == '/') | |
554 | return line + i; | |
555 | } | |
556 | return NULL; | |
557 | } | |
558 | ||
81bf96bb JH |
559 | /* |
560 | * This is to extract the same name that appears on "diff --git" | |
22943f1a JH |
561 | * line. We do not find and return anything if it is a rename |
562 | * patch, and it is OK because we will find the name elsewhere. | |
563 | * We need to reliably find name only when it is mode-change only, | |
564 | * creation or deletion of an empty file. In any of these cases, | |
565 | * both sides are the same name under a/ and b/ respectively. | |
566 | */ | |
567 | static char *git_header_name(char *line, int llen) | |
5041aa70 | 568 | { |
22943f1a JH |
569 | const char *name; |
570 | const char *second = NULL; | |
7fb1011e | 571 | size_t len; |
5041aa70 | 572 | |
22943f1a JH |
573 | line += strlen("diff --git "); |
574 | llen -= strlen("diff --git "); | |
575 | ||
576 | if (*line == '"') { | |
577 | const char *cp; | |
7fb1011e PH |
578 | struct strbuf first; |
579 | struct strbuf sp; | |
580 | ||
581 | strbuf_init(&first, 0); | |
582 | strbuf_init(&sp, 0); | |
583 | ||
584 | if (unquote_c_style(&first, line, &second)) | |
585 | goto free_and_fail1; | |
22943f1a JH |
586 | |
587 | /* advance to the first slash */ | |
7fb1011e PH |
588 | cp = stop_at_slash(first.buf, first.len); |
589 | /* we do not accept absolute paths */ | |
590 | if (!cp || cp == first.buf) | |
591 | goto free_and_fail1; | |
592 | strbuf_remove(&first, 0, cp + 1 - first.buf); | |
22943f1a | 593 | |
81bf96bb JH |
594 | /* |
595 | * second points at one past closing dq of name. | |
22943f1a JH |
596 | * find the second name. |
597 | */ | |
598 | while ((second < line + llen) && isspace(*second)) | |
599 | second++; | |
600 | ||
601 | if (line + llen <= second) | |
7fb1011e | 602 | goto free_and_fail1; |
22943f1a | 603 | if (*second == '"') { |
7fb1011e PH |
604 | if (unquote_c_style(&sp, second, NULL)) |
605 | goto free_and_fail1; | |
606 | cp = stop_at_slash(sp.buf, sp.len); | |
607 | if (!cp || cp == sp.buf) | |
608 | goto free_and_fail1; | |
22943f1a | 609 | /* They must match, otherwise ignore */ |
7fb1011e PH |
610 | if (strcmp(cp + 1, first.buf)) |
611 | goto free_and_fail1; | |
612 | strbuf_release(&sp); | |
b315c5c0 | 613 | return strbuf_detach(&first, NULL); |
22943f1a JH |
614 | } |
615 | ||
616 | /* unquoted second */ | |
617 | cp = stop_at_slash(second, line + llen - second); | |
618 | if (!cp || cp == second) | |
7fb1011e | 619 | goto free_and_fail1; |
22943f1a | 620 | cp++; |
7fb1011e PH |
621 | if (line + llen - cp != first.len + 1 || |
622 | memcmp(first.buf, cp, first.len)) | |
623 | goto free_and_fail1; | |
b315c5c0 | 624 | return strbuf_detach(&first, NULL); |
7fb1011e PH |
625 | |
626 | free_and_fail1: | |
627 | strbuf_release(&first); | |
628 | strbuf_release(&sp); | |
629 | return NULL; | |
5041aa70 LT |
630 | } |
631 | ||
22943f1a JH |
632 | /* unquoted first name */ |
633 | name = stop_at_slash(line, llen); | |
634 | if (!name || name == line) | |
5041aa70 | 635 | return NULL; |
22943f1a JH |
636 | name++; |
637 | ||
81bf96bb JH |
638 | /* |
639 | * since the first name is unquoted, a dq if exists must be | |
22943f1a JH |
640 | * the beginning of the second name. |
641 | */ | |
642 | for (second = name; second < line + llen; second++) { | |
643 | if (*second == '"') { | |
7fb1011e | 644 | struct strbuf sp; |
22943f1a | 645 | const char *np; |
7fb1011e PH |
646 | |
647 | strbuf_init(&sp, 0); | |
648 | if (unquote_c_style(&sp, second, NULL)) | |
649 | goto free_and_fail2; | |
650 | ||
651 | np = stop_at_slash(sp.buf, sp.len); | |
652 | if (!np || np == sp.buf) | |
653 | goto free_and_fail2; | |
22943f1a | 654 | np++; |
7fb1011e PH |
655 | |
656 | len = sp.buf + sp.len - np; | |
657 | if (len < second - name && | |
22943f1a JH |
658 | !strncmp(np, name, len) && |
659 | isspace(name[len])) { | |
660 | /* Good */ | |
7fb1011e | 661 | strbuf_remove(&sp, 0, np - sp.buf); |
b315c5c0 | 662 | return strbuf_detach(&sp, NULL); |
22943f1a | 663 | } |
7fb1011e PH |
664 | |
665 | free_and_fail2: | |
666 | strbuf_release(&sp); | |
667 | return NULL; | |
22943f1a JH |
668 | } |
669 | } | |
670 | ||
5041aa70 LT |
671 | /* |
672 | * Accept a name only if it shows up twice, exactly the same | |
673 | * form. | |
674 | */ | |
675 | for (len = 0 ; ; len++) { | |
dd305c84 | 676 | switch (name[len]) { |
5041aa70 LT |
677 | default: |
678 | continue; | |
679 | case '\n': | |
e70a165d | 680 | return NULL; |
5041aa70 LT |
681 | case '\t': case ' ': |
682 | second = name+len; | |
683 | for (;;) { | |
684 | char c = *second++; | |
685 | if (c == '\n') | |
686 | return NULL; | |
687 | if (c == '/') | |
688 | break; | |
689 | } | |
0e87e048 | 690 | if (second[len] == '\n' && !memcmp(name, second, len)) { |
182af834 | 691 | return xmemdupz(name, len); |
5041aa70 LT |
692 | } |
693 | } | |
694 | } | |
5041aa70 LT |
695 | } |
696 | ||
c1bb9350 | 697 | /* Verify that we recognize the lines following a git header */ |
19c58fb8 | 698 | static int parse_git_header(char *line, int len, unsigned int size, struct patch *patch) |
c1bb9350 | 699 | { |
a4acb0eb LT |
700 | unsigned long offset; |
701 | ||
702 | /* A git diff has explicit new/delete information, so we don't guess */ | |
19c58fb8 LT |
703 | patch->is_new = 0; |
704 | patch->is_delete = 0; | |
a4acb0eb | 705 | |
5041aa70 LT |
706 | /* |
707 | * Some things may not have the old name in the | |
708 | * rest of the headers anywhere (pure mode changes, | |
709 | * or removing or adding empty files), so we get | |
710 | * the default name from the header. | |
711 | */ | |
22943f1a | 712 | patch->def_name = git_header_name(line, len); |
5041aa70 | 713 | |
a4acb0eb LT |
714 | line += len; |
715 | size -= len; | |
716 | linenr++; | |
717 | for (offset = len ; size > 0 ; offset += len, size -= len, line += len, linenr++) { | |
718 | static const struct opentry { | |
719 | const char *str; | |
19c58fb8 | 720 | int (*fn)(const char *, struct patch *); |
a4acb0eb LT |
721 | } optable[] = { |
722 | { "@@ -", gitdiff_hdrend }, | |
723 | { "--- ", gitdiff_oldname }, | |
724 | { "+++ ", gitdiff_newname }, | |
725 | { "old mode ", gitdiff_oldmode }, | |
726 | { "new mode ", gitdiff_newmode }, | |
727 | { "deleted file mode ", gitdiff_delete }, | |
728 | { "new file mode ", gitdiff_newfile }, | |
729 | { "copy from ", gitdiff_copysrc }, | |
730 | { "copy to ", gitdiff_copydst }, | |
33f4d087 LT |
731 | { "rename old ", gitdiff_renamesrc }, |
732 | { "rename new ", gitdiff_renamedst }, | |
dc938417 LT |
733 | { "rename from ", gitdiff_renamesrc }, |
734 | { "rename to ", gitdiff_renamedst }, | |
a4acb0eb | 735 | { "similarity index ", gitdiff_similarity }, |
70aadac0 | 736 | { "dissimilarity index ", gitdiff_dissimilarity }, |
2cf67f1e | 737 | { "index ", gitdiff_index }, |
9a4a100e | 738 | { "", gitdiff_unrecognized }, |
a4acb0eb LT |
739 | }; |
740 | int i; | |
c1bb9350 | 741 | |
c1bb9350 | 742 | len = linelen(line, size); |
a4acb0eb | 743 | if (!len || line[len-1] != '\n') |
c1bb9350 | 744 | break; |
b4f2a6ac | 745 | for (i = 0; i < ARRAY_SIZE(optable); i++) { |
a4acb0eb LT |
746 | const struct opentry *p = optable + i; |
747 | int oplen = strlen(p->str); | |
748 | if (len < oplen || memcmp(p->str, line, oplen)) | |
749 | continue; | |
19c58fb8 | 750 | if (p->fn(line + oplen, patch) < 0) |
a4acb0eb | 751 | return offset; |
9a4a100e | 752 | break; |
a4acb0eb | 753 | } |
c1bb9350 LT |
754 | } |
755 | ||
a4acb0eb | 756 | return offset; |
c1bb9350 LT |
757 | } |
758 | ||
fab2c257 | 759 | static int parse_num(const char *line, unsigned long *p) |
46979f56 LT |
760 | { |
761 | char *ptr; | |
fab2c257 LT |
762 | |
763 | if (!isdigit(*line)) | |
764 | return 0; | |
765 | *p = strtoul(line, &ptr, 10); | |
766 | return ptr - line; | |
767 | } | |
768 | ||
769 | static int parse_range(const char *line, int len, int offset, const char *expect, | |
81bf96bb | 770 | unsigned long *p1, unsigned long *p2) |
fab2c257 | 771 | { |
46979f56 LT |
772 | int digits, ex; |
773 | ||
774 | if (offset < 0 || offset >= len) | |
775 | return -1; | |
776 | line += offset; | |
777 | len -= offset; | |
778 | ||
fab2c257 LT |
779 | digits = parse_num(line, p1); |
780 | if (!digits) | |
46979f56 | 781 | return -1; |
46979f56 LT |
782 | |
783 | offset += digits; | |
784 | line += digits; | |
785 | len -= digits; | |
786 | ||
c1504628 | 787 | *p2 = 1; |
fab2c257 LT |
788 | if (*line == ',') { |
789 | digits = parse_num(line+1, p2); | |
790 | if (!digits) | |
791 | return -1; | |
792 | ||
793 | offset += digits+1; | |
794 | line += digits+1; | |
795 | len -= digits+1; | |
796 | } | |
797 | ||
46979f56 LT |
798 | ex = strlen(expect); |
799 | if (ex > len) | |
800 | return -1; | |
801 | if (memcmp(line, expect, ex)) | |
802 | return -1; | |
803 | ||
804 | return offset + ex; | |
805 | } | |
806 | ||
807 | /* | |
808 | * Parse a unified diff fragment header of the | |
809 | * form "@@ -a,b +c,d @@" | |
810 | */ | |
19c58fb8 | 811 | static int parse_fragment_header(char *line, int len, struct fragment *fragment) |
46979f56 LT |
812 | { |
813 | int offset; | |
814 | ||
815 | if (!len || line[len-1] != '\n') | |
816 | return -1; | |
817 | ||
818 | /* Figure out the number of lines in a fragment */ | |
fab2c257 LT |
819 | offset = parse_range(line, len, 4, " +", &fragment->oldpos, &fragment->oldlines); |
820 | offset = parse_range(line, len, offset, " @@", &fragment->newpos, &fragment->newlines); | |
46979f56 LT |
821 | |
822 | return offset; | |
823 | } | |
824 | ||
19c58fb8 | 825 | static int find_header(char *line, unsigned long size, int *hdrsize, struct patch *patch) |
c1bb9350 LT |
826 | { |
827 | unsigned long offset, len; | |
828 | ||
9987d7c5 | 829 | patch->is_toplevel_relative = 0; |
19c58fb8 LT |
830 | patch->is_rename = patch->is_copy = 0; |
831 | patch->is_new = patch->is_delete = -1; | |
832 | patch->old_mode = patch->new_mode = 0; | |
833 | patch->old_name = patch->new_name = NULL; | |
46979f56 | 834 | for (offset = 0; size > 0; offset += len, size -= len, line += len, linenr++) { |
c1bb9350 LT |
835 | unsigned long nextlen; |
836 | ||
837 | len = linelen(line, size); | |
838 | if (!len) | |
839 | break; | |
840 | ||
841 | /* Testing this early allows us to take a few shortcuts.. */ | |
842 | if (len < 6) | |
843 | continue; | |
46979f56 LT |
844 | |
845 | /* | |
82e5a82f | 846 | * Make sure we don't find any unconnected patch fragments. |
46979f56 LT |
847 | * That's a sign that we didn't find a header, and that a |
848 | * patch has become corrupted/broken up. | |
849 | */ | |
850 | if (!memcmp("@@ -", line, 4)) { | |
19c58fb8 LT |
851 | struct fragment dummy; |
852 | if (parse_fragment_header(line, len, &dummy) < 0) | |
46979f56 | 853 | continue; |
65341411 JH |
854 | die("patch fragment without header at line %d: %.*s", |
855 | linenr, (int)len-1, line); | |
46979f56 LT |
856 | } |
857 | ||
c1bb9350 LT |
858 | if (size < len + 6) |
859 | break; | |
860 | ||
861 | /* | |
862 | * Git patch? It might not have a real patch, just a rename | |
863 | * or mode change, so we handle that specially | |
864 | */ | |
865 | if (!memcmp("diff --git ", line, 11)) { | |
19c58fb8 | 866 | int git_hdr_len = parse_git_header(line, len, size, patch); |
206de27e | 867 | if (git_hdr_len <= len) |
c1bb9350 | 868 | continue; |
b7e8039a LT |
869 | if (!patch->old_name && !patch->new_name) { |
870 | if (!patch->def_name) | |
871 | die("git diff header lacks filename information (line %d)", linenr); | |
872 | patch->old_name = patch->new_name = patch->def_name; | |
873 | } | |
9987d7c5 | 874 | patch->is_toplevel_relative = 1; |
a4acb0eb | 875 | *hdrsize = git_hdr_len; |
c1bb9350 LT |
876 | return offset; |
877 | } | |
878 | ||
81bf96bb | 879 | /* --- followed by +++ ? */ |
c1bb9350 LT |
880 | if (memcmp("--- ", line, 4) || memcmp("+++ ", line + len, 4)) |
881 | continue; | |
882 | ||
883 | /* | |
884 | * We only accept unified patches, so we want it to | |
885 | * at least have "@@ -a,b +c,d @@\n", which is 14 chars | |
81bf96bb | 886 | * minimum ("@@ -0,0 +1 @@\n" is the shortest). |
c1bb9350 LT |
887 | */ |
888 | nextlen = linelen(line + len, size - len); | |
889 | if (size < nextlen + 14 || memcmp("@@ -", line + len + nextlen, 4)) | |
890 | continue; | |
891 | ||
892 | /* Ok, we'll consider it a patch */ | |
19c58fb8 | 893 | parse_traditional_patch(line, line+len, patch); |
c1bb9350 | 894 | *hdrsize = len + nextlen; |
46979f56 | 895 | linenr += 2; |
c1bb9350 LT |
896 | return offset; |
897 | } | |
898 | return -1; | |
899 | } | |
900 | ||
cf1b7869 | 901 | static void check_whitespace(const char *line, int len, unsigned ws_rule) |
d0c25035 JH |
902 | { |
903 | const char *err = "Adds trailing whitespace"; | |
904 | int seen_space = 0; | |
905 | int i; | |
906 | ||
907 | /* | |
908 | * We know len is at least two, since we have a '+' and we | |
909 | * checked that the last character was a '\n' before calling | |
910 | * this function. That is, an addition of an empty line would | |
911 | * check the '+' here. Sneaky... | |
912 | */ | |
cf1b7869 | 913 | if ((ws_rule & WS_TRAILING_SPACE) && isspace(line[len-2])) |
d0c25035 JH |
914 | goto error; |
915 | ||
916 | /* | |
917 | * Make sure that there is no space followed by a tab in | |
918 | * indentation. | |
919 | */ | |
cf1b7869 | 920 | if (ws_rule & WS_SPACE_BEFORE_TAB) { |
d5a41641 JH |
921 | err = "Space in indent is followed by a tab"; |
922 | for (i = 1; i < len; i++) { | |
923 | if (line[i] == '\t') { | |
924 | if (seen_space) | |
925 | goto error; | |
926 | } | |
927 | else if (line[i] == ' ') | |
928 | seen_space = 1; | |
929 | else | |
930 | break; | |
d0c25035 | 931 | } |
d5a41641 JH |
932 | } |
933 | ||
934 | /* | |
935 | * Make sure that the indentation does not contain more than | |
936 | * 8 spaces. | |
937 | */ | |
cf1b7869 | 938 | if ((ws_rule & WS_INDENT_WITH_NON_TAB) && |
d5a41641 JH |
939 | (8 < len) && !strncmp("+ ", line, 9)) { |
940 | err = "Indent more than 8 places with spaces"; | |
941 | goto error; | |
d0c25035 JH |
942 | } |
943 | return; | |
944 | ||
945 | error: | |
946 | whitespace_error++; | |
947 | if (squelch_whitespace_errors && | |
948 | squelch_whitespace_errors < whitespace_error) | |
949 | ; | |
950 | else | |
951 | fprintf(stderr, "%s.\n%s:%d:%.*s\n", | |
952 | err, patch_input_file, linenr, len-2, line+1); | |
953 | } | |
954 | ||
c1bb9350 | 955 | /* |
4be60962 JH |
956 | * Parse a unified diff. Note that this really needs to parse each |
957 | * fragment separately, since the only way to know the difference | |
958 | * between a "---" that is part of a patch, and a "---" that starts | |
959 | * the next patch is to look at the line counts.. | |
c1bb9350 | 960 | */ |
81bf96bb JH |
961 | static int parse_fragment(char *line, unsigned long size, |
962 | struct patch *patch, struct fragment *fragment) | |
c1bb9350 | 963 | { |
3f40315a | 964 | int added, deleted; |
c1bb9350 | 965 | int len = linelen(line, size), offset; |
30996652 | 966 | unsigned long oldlines, newlines; |
47495887 | 967 | unsigned long leading, trailing; |
c1bb9350 | 968 | |
19c58fb8 | 969 | offset = parse_fragment_header(line, len, fragment); |
c1bb9350 LT |
970 | if (offset < 0) |
971 | return -1; | |
19c58fb8 LT |
972 | oldlines = fragment->oldlines; |
973 | newlines = fragment->newlines; | |
47495887 EB |
974 | leading = 0; |
975 | trailing = 0; | |
c1bb9350 LT |
976 | |
977 | /* Parse the thing.. */ | |
978 | line += len; | |
979 | size -= len; | |
46979f56 | 980 | linenr++; |
3f40315a | 981 | added = deleted = 0; |
4be60962 JH |
982 | for (offset = len; |
983 | 0 < size; | |
984 | offset += len, size -= len, line += len, linenr++) { | |
c1bb9350 LT |
985 | if (!oldlines && !newlines) |
986 | break; | |
987 | len = linelen(line, size); | |
988 | if (!len || line[len-1] != '\n') | |
989 | return -1; | |
990 | switch (*line) { | |
991 | default: | |
992 | return -1; | |
b507b465 | 993 | case '\n': /* newer GNU diff, an empty context line */ |
c1bb9350 LT |
994 | case ' ': |
995 | oldlines--; | |
996 | newlines--; | |
47495887 EB |
997 | if (!deleted && !added) |
998 | leading++; | |
999 | trailing++; | |
c1bb9350 LT |
1000 | break; |
1001 | case '-': | |
5fda48d6 | 1002 | if (apply_in_reverse && |
81bf96bb | 1003 | ws_error_action != nowarn_ws_error) |
cf1b7869 | 1004 | check_whitespace(line, len, patch->ws_rule); |
3f40315a | 1005 | deleted++; |
c1bb9350 | 1006 | oldlines--; |
47495887 | 1007 | trailing = 0; |
c1bb9350 LT |
1008 | break; |
1009 | case '+': | |
5fda48d6 | 1010 | if (!apply_in_reverse && |
81bf96bb | 1011 | ws_error_action != nowarn_ws_error) |
cf1b7869 | 1012 | check_whitespace(line, len, patch->ws_rule); |
3f40315a | 1013 | added++; |
c1bb9350 | 1014 | newlines--; |
47495887 | 1015 | trailing = 0; |
c1bb9350 | 1016 | break; |
433ef8a2 | 1017 | |
81bf96bb JH |
1018 | /* |
1019 | * We allow "\ No newline at end of file". Depending | |
433ef8a2 FK |
1020 | * on locale settings when the patch was produced we |
1021 | * don't know what this line looks like. The only | |
56d33b11 JH |
1022 | * thing we do know is that it begins with "\ ". |
1023 | * Checking for 12 is just for sanity check -- any | |
1024 | * l10n of "\ No newline..." is at least that long. | |
1025 | */ | |
fab2c257 | 1026 | case '\\': |
433ef8a2 | 1027 | if (len < 12 || memcmp(line, "\\ ", 2)) |
3cca928d | 1028 | return -1; |
fab2c257 | 1029 | break; |
c1bb9350 LT |
1030 | } |
1031 | } | |
c1504628 LT |
1032 | if (oldlines || newlines) |
1033 | return -1; | |
47495887 EB |
1034 | fragment->leading = leading; |
1035 | fragment->trailing = trailing; | |
1036 | ||
81bf96bb JH |
1037 | /* |
1038 | * If a fragment ends with an incomplete line, we failed to include | |
8b64647d JH |
1039 | * it in the above loop because we hit oldlines == newlines == 0 |
1040 | * before seeing it. | |
1041 | */ | |
433ef8a2 | 1042 | if (12 < size && !memcmp(line, "\\ ", 2)) |
8b64647d JH |
1043 | offset += linelen(line, size); |
1044 | ||
3f40315a LT |
1045 | patch->lines_added += added; |
1046 | patch->lines_deleted += deleted; | |
4be60962 JH |
1047 | |
1048 | if (0 < patch->is_new && oldlines) | |
1049 | return error("new file depends on old contents"); | |
1050 | if (0 < patch->is_delete && newlines) | |
1051 | return error("deleted file still has contents"); | |
c1bb9350 LT |
1052 | return offset; |
1053 | } | |
1054 | ||
19c58fb8 | 1055 | static int parse_single_patch(char *line, unsigned long size, struct patch *patch) |
c1bb9350 LT |
1056 | { |
1057 | unsigned long offset = 0; | |
4be60962 | 1058 | unsigned long oldlines = 0, newlines = 0, context = 0; |
19c58fb8 | 1059 | struct fragment **fragp = &patch->fragments; |
c1bb9350 LT |
1060 | |
1061 | while (size > 4 && !memcmp(line, "@@ -", 4)) { | |
19c58fb8 LT |
1062 | struct fragment *fragment; |
1063 | int len; | |
1064 | ||
90321c10 | 1065 | fragment = xcalloc(1, sizeof(*fragment)); |
19c58fb8 | 1066 | len = parse_fragment(line, size, patch, fragment); |
c1bb9350 | 1067 | if (len <= 0) |
46979f56 | 1068 | die("corrupt patch at line %d", linenr); |
19c58fb8 LT |
1069 | fragment->patch = line; |
1070 | fragment->size = len; | |
4be60962 JH |
1071 | oldlines += fragment->oldlines; |
1072 | newlines += fragment->newlines; | |
1073 | context += fragment->leading + fragment->trailing; | |
19c58fb8 LT |
1074 | |
1075 | *fragp = fragment; | |
1076 | fragp = &fragment->next; | |
c1bb9350 LT |
1077 | |
1078 | offset += len; | |
1079 | line += len; | |
1080 | size -= len; | |
1081 | } | |
4be60962 JH |
1082 | |
1083 | /* | |
1084 | * If something was removed (i.e. we have old-lines) it cannot | |
1085 | * be creation, and if something was added it cannot be | |
1086 | * deletion. However, the reverse is not true; --unified=0 | |
1087 | * patches that only add are not necessarily creation even | |
1088 | * though they do not have any old lines, and ones that only | |
1089 | * delete are not necessarily deletion. | |
1090 | * | |
1091 | * Unfortunately, a real creation/deletion patch do _not_ have | |
1092 | * any context line by definition, so we cannot safely tell it | |
1093 | * apart with --unified=0 insanity. At least if the patch has | |
1094 | * more than one hunk it is not creation or deletion. | |
1095 | */ | |
1096 | if (patch->is_new < 0 && | |
1097 | (oldlines || (patch->fragments && patch->fragments->next))) | |
1098 | patch->is_new = 0; | |
1099 | if (patch->is_delete < 0 && | |
1100 | (newlines || (patch->fragments && patch->fragments->next))) | |
1101 | patch->is_delete = 0; | |
1102 | if (!unidiff_zero || context) { | |
1103 | /* If the user says the patch is not generated with | |
1104 | * --unified=0, or if we have seen context lines, | |
1105 | * then not having oldlines means the patch is creation, | |
1106 | * and not having newlines means the patch is deletion. | |
1107 | */ | |
6f9f3b26 | 1108 | if (patch->is_new < 0 && !oldlines) { |
4be60962 | 1109 | patch->is_new = 1; |
6f9f3b26 JH |
1110 | patch->old_name = NULL; |
1111 | } | |
1112 | if (patch->is_delete < 0 && !newlines) { | |
4be60962 | 1113 | patch->is_delete = 1; |
6f9f3b26 JH |
1114 | patch->new_name = NULL; |
1115 | } | |
4be60962 JH |
1116 | } |
1117 | ||
1118 | if (0 < patch->is_new && oldlines) | |
1119 | die("new file %s depends on old contents", patch->new_name); | |
1120 | if (0 < patch->is_delete && newlines) | |
1121 | die("deleted file %s still has contents", patch->old_name); | |
1122 | if (!patch->is_delete && !newlines && context) | |
1123 | fprintf(stderr, "** warning: file %s becomes empty but " | |
1124 | "is not deleted\n", patch->new_name); | |
1125 | ||
c1bb9350 LT |
1126 | return offset; |
1127 | } | |
1128 | ||
1fea629f LT |
1129 | static inline int metadata_changes(struct patch *patch) |
1130 | { | |
1131 | return patch->is_rename > 0 || | |
1132 | patch->is_copy > 0 || | |
1133 | patch->is_new > 0 || | |
1134 | patch->is_delete || | |
1135 | (patch->old_mode && patch->new_mode && | |
1136 | patch->old_mode != patch->new_mode); | |
1137 | } | |
1138 | ||
3cd4f5e8 JH |
1139 | static char *inflate_it(const void *data, unsigned long size, |
1140 | unsigned long inflated_size) | |
051308f6 | 1141 | { |
3cd4f5e8 JH |
1142 | z_stream stream; |
1143 | void *out; | |
1144 | int st; | |
1145 | ||
1146 | memset(&stream, 0, sizeof(stream)); | |
1147 | ||
1148 | stream.next_in = (unsigned char *)data; | |
1149 | stream.avail_in = size; | |
1150 | stream.next_out = out = xmalloc(inflated_size); | |
1151 | stream.avail_out = inflated_size; | |
1152 | inflateInit(&stream); | |
1153 | st = inflate(&stream, Z_FINISH); | |
1154 | if ((st != Z_STREAM_END) || stream.total_out != inflated_size) { | |
1155 | free(out); | |
1156 | return NULL; | |
1157 | } | |
1158 | return out; | |
1159 | } | |
1160 | ||
1161 | static struct fragment *parse_binary_hunk(char **buf_p, | |
1162 | unsigned long *sz_p, | |
1163 | int *status_p, | |
1164 | int *used_p) | |
1165 | { | |
81bf96bb JH |
1166 | /* |
1167 | * Expect a line that begins with binary patch method ("literal" | |
3cd4f5e8 JH |
1168 | * or "delta"), followed by the length of data before deflating. |
1169 | * a sequence of 'length-byte' followed by base-85 encoded data | |
1170 | * should follow, terminated by a newline. | |
051308f6 JH |
1171 | * |
1172 | * Each 5-byte sequence of base-85 encodes up to 4 bytes, | |
1173 | * and we would limit the patch line to 66 characters, | |
1174 | * so one line can fit up to 13 groups that would decode | |
1175 | * to 52 bytes max. The length byte 'A'-'Z' corresponds | |
1176 | * to 1-26 bytes, and 'a'-'z' corresponds to 27-52 bytes. | |
051308f6 JH |
1177 | */ |
1178 | int llen, used; | |
3cd4f5e8 JH |
1179 | unsigned long size = *sz_p; |
1180 | char *buffer = *buf_p; | |
1181 | int patch_method; | |
1182 | unsigned long origlen; | |
0660626c | 1183 | char *data = NULL; |
3cd4f5e8 JH |
1184 | int hunk_size = 0; |
1185 | struct fragment *frag; | |
051308f6 | 1186 | |
0660626c JH |
1187 | llen = linelen(buffer, size); |
1188 | used = llen; | |
3cd4f5e8 JH |
1189 | |
1190 | *status_p = 0; | |
0660626c | 1191 | |
cc44c765 | 1192 | if (!prefixcmp(buffer, "delta ")) { |
3cd4f5e8 JH |
1193 | patch_method = BINARY_DELTA_DEFLATED; |
1194 | origlen = strtoul(buffer + 6, NULL, 10); | |
0660626c | 1195 | } |
cc44c765 | 1196 | else if (!prefixcmp(buffer, "literal ")) { |
3cd4f5e8 JH |
1197 | patch_method = BINARY_LITERAL_DEFLATED; |
1198 | origlen = strtoul(buffer + 8, NULL, 10); | |
0660626c JH |
1199 | } |
1200 | else | |
3cd4f5e8 JH |
1201 | return NULL; |
1202 | ||
1203 | linenr++; | |
0660626c | 1204 | buffer += llen; |
051308f6 JH |
1205 | while (1) { |
1206 | int byte_length, max_byte_length, newsize; | |
1207 | llen = linelen(buffer, size); | |
1208 | used += llen; | |
1209 | linenr++; | |
03eb8f8a JH |
1210 | if (llen == 1) { |
1211 | /* consume the blank line */ | |
1212 | buffer++; | |
1213 | size--; | |
051308f6 | 1214 | break; |
03eb8f8a | 1215 | } |
81bf96bb JH |
1216 | /* |
1217 | * Minimum line is "A00000\n" which is 7-byte long, | |
051308f6 JH |
1218 | * and the line length must be multiple of 5 plus 2. |
1219 | */ | |
1220 | if ((llen < 7) || (llen-2) % 5) | |
1221 | goto corrupt; | |
1222 | max_byte_length = (llen - 2) / 5 * 4; | |
1223 | byte_length = *buffer; | |
1224 | if ('A' <= byte_length && byte_length <= 'Z') | |
1225 | byte_length = byte_length - 'A' + 1; | |
1226 | else if ('a' <= byte_length && byte_length <= 'z') | |
1227 | byte_length = byte_length - 'a' + 27; | |
1228 | else | |
1229 | goto corrupt; | |
1230 | /* if the input length was not multiple of 4, we would | |
1231 | * have filler at the end but the filler should never | |
1232 | * exceed 3 bytes | |
1233 | */ | |
1234 | if (max_byte_length < byte_length || | |
1235 | byte_length <= max_byte_length - 4) | |
1236 | goto corrupt; | |
3cd4f5e8 | 1237 | newsize = hunk_size + byte_length; |
0660626c | 1238 | data = xrealloc(data, newsize); |
3cd4f5e8 | 1239 | if (decode_85(data + hunk_size, buffer + 1, byte_length)) |
051308f6 | 1240 | goto corrupt; |
3cd4f5e8 | 1241 | hunk_size = newsize; |
051308f6 JH |
1242 | buffer += llen; |
1243 | size -= llen; | |
1244 | } | |
3cd4f5e8 JH |
1245 | |
1246 | frag = xcalloc(1, sizeof(*frag)); | |
1247 | frag->patch = inflate_it(data, hunk_size, origlen); | |
1248 | if (!frag->patch) | |
1249 | goto corrupt; | |
1250 | free(data); | |
1251 | frag->size = origlen; | |
1252 | *buf_p = buffer; | |
1253 | *sz_p = size; | |
1254 | *used_p = used; | |
1255 | frag->binary_patch_method = patch_method; | |
1256 | return frag; | |
1257 | ||
051308f6 | 1258 | corrupt: |
4cac42b1 | 1259 | free(data); |
3cd4f5e8 JH |
1260 | *status_p = -1; |
1261 | error("corrupt binary patch at line %d: %.*s", | |
1262 | linenr-1, llen-1, buffer); | |
1263 | return NULL; | |
1264 | } | |
1265 | ||
1266 | static int parse_binary(char *buffer, unsigned long size, struct patch *patch) | |
1267 | { | |
81bf96bb JH |
1268 | /* |
1269 | * We have read "GIT binary patch\n"; what follows is a line | |
3cd4f5e8 JH |
1270 | * that says the patch method (currently, either "literal" or |
1271 | * "delta") and the length of data before deflating; a | |
1272 | * sequence of 'length-byte' followed by base-85 encoded data | |
1273 | * follows. | |
1274 | * | |
1275 | * When a binary patch is reversible, there is another binary | |
1276 | * hunk in the same format, starting with patch method (either | |
1277 | * "literal" or "delta") with the length of data, and a sequence | |
1278 | * of length-byte + base-85 encoded data, terminated with another | |
1279 | * empty line. This data, when applied to the postimage, produces | |
1280 | * the preimage. | |
1281 | */ | |
1282 | struct fragment *forward; | |
1283 | struct fragment *reverse; | |
1284 | int status; | |
1285 | int used, used_1; | |
1286 | ||
1287 | forward = parse_binary_hunk(&buffer, &size, &status, &used); | |
1288 | if (!forward && !status) | |
1289 | /* there has to be one hunk (forward hunk) */ | |
1290 | return error("unrecognized binary patch at line %d", linenr-1); | |
1291 | if (status) | |
1292 | /* otherwise we already gave an error message */ | |
1293 | return status; | |
1294 | ||
1295 | reverse = parse_binary_hunk(&buffer, &size, &status, &used_1); | |
1296 | if (reverse) | |
1297 | used += used_1; | |
1298 | else if (status) { | |
81bf96bb JH |
1299 | /* |
1300 | * Not having reverse hunk is not an error, but having | |
3cd4f5e8 JH |
1301 | * a corrupt reverse hunk is. |
1302 | */ | |
1303 | free((void*) forward->patch); | |
1304 | free(forward); | |
1305 | return status; | |
1306 | } | |
1307 | forward->next = reverse; | |
1308 | patch->fragments = forward; | |
1309 | patch->is_binary = 1; | |
1310 | return used; | |
051308f6 JH |
1311 | } |
1312 | ||
19c58fb8 | 1313 | static int parse_chunk(char *buffer, unsigned long size, struct patch *patch) |
c1bb9350 LT |
1314 | { |
1315 | int hdrsize, patchsize; | |
19c58fb8 | 1316 | int offset = find_header(buffer, size, &hdrsize, patch); |
c1bb9350 LT |
1317 | |
1318 | if (offset < 0) | |
1319 | return offset; | |
c1bb9350 | 1320 | |
cf1b7869 JH |
1321 | patch->ws_rule = whitespace_rule(patch->new_name |
1322 | ? patch->new_name | |
1323 | : patch->old_name); | |
1324 | ||
81bf96bb JH |
1325 | patchsize = parse_single_patch(buffer + offset + hdrsize, |
1326 | size - offset - hdrsize, patch); | |
c1bb9350 | 1327 | |
92927ed0 | 1328 | if (!patchsize) { |
3200d1ae JH |
1329 | static const char *binhdr[] = { |
1330 | "Binary files ", | |
1331 | "Files ", | |
1332 | NULL, | |
1333 | }; | |
051308f6 | 1334 | static const char git_binary[] = "GIT binary patch\n"; |
3200d1ae JH |
1335 | int i; |
1336 | int hd = hdrsize + offset; | |
1337 | unsigned long llen = linelen(buffer + hd, size - hd); | |
1338 | ||
051308f6 JH |
1339 | if (llen == sizeof(git_binary) - 1 && |
1340 | !memcmp(git_binary, buffer + hd, llen)) { | |
1341 | int used; | |
1342 | linenr++; | |
1343 | used = parse_binary(buffer + hd + llen, | |
1344 | size - hd - llen, patch); | |
1345 | if (used) | |
1346 | patchsize = used + llen; | |
1347 | else | |
1348 | patchsize = 0; | |
1349 | } | |
1350 | else if (!memcmp(" differ\n", buffer + hd + llen - 8, 8)) { | |
3200d1ae JH |
1351 | for (i = 0; binhdr[i]; i++) { |
1352 | int len = strlen(binhdr[i]); | |
1353 | if (len < size - hd && | |
1354 | !memcmp(binhdr[i], buffer + hd, len)) { | |
051308f6 | 1355 | linenr++; |
3200d1ae | 1356 | patch->is_binary = 1; |
051308f6 | 1357 | patchsize = llen; |
3200d1ae JH |
1358 | break; |
1359 | } | |
1360 | } | |
051308f6 | 1361 | } |
ff36de08 | 1362 | |
2b6eef94 JH |
1363 | /* Empty patch cannot be applied if it is a text patch |
1364 | * without metadata change. A binary patch appears | |
1365 | * empty to us here. | |
92927ed0 JH |
1366 | */ |
1367 | if ((apply || check) && | |
2b6eef94 | 1368 | (!patch->is_binary && !metadata_changes(patch))) |
ff36de08 JH |
1369 | die("patch with only garbage at line %d", linenr); |
1370 | } | |
1fea629f | 1371 | |
c1bb9350 LT |
1372 | return offset + hdrsize + patchsize; |
1373 | } | |
1374 | ||
e5a94313 JS |
1375 | #define swap(a,b) myswap((a),(b),sizeof(a)) |
1376 | ||
1377 | #define myswap(a, b, size) do { \ | |
1378 | unsigned char mytmp[size]; \ | |
1379 | memcpy(mytmp, &a, size); \ | |
1380 | memcpy(&a, &b, size); \ | |
1381 | memcpy(&b, mytmp, size); \ | |
1382 | } while (0) | |
1383 | ||
1384 | static void reverse_patches(struct patch *p) | |
1385 | { | |
1386 | for (; p; p = p->next) { | |
1387 | struct fragment *frag = p->fragments; | |
1388 | ||
1389 | swap(p->new_name, p->old_name); | |
1390 | swap(p->new_mode, p->old_mode); | |
1391 | swap(p->is_new, p->is_delete); | |
1392 | swap(p->lines_added, p->lines_deleted); | |
1393 | swap(p->old_sha1_prefix, p->new_sha1_prefix); | |
1394 | ||
1395 | for (; frag; frag = frag->next) { | |
1396 | swap(frag->newpos, frag->oldpos); | |
1397 | swap(frag->newlines, frag->oldlines); | |
1398 | } | |
e5a94313 JS |
1399 | } |
1400 | } | |
1401 | ||
81bf96bb JH |
1402 | static const char pluses[] = |
1403 | "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"; | |
1404 | static const char minuses[]= | |
1405 | "----------------------------------------------------------------------"; | |
3f40315a LT |
1406 | |
1407 | static void show_stats(struct patch *patch) | |
1408 | { | |
663af342 PH |
1409 | struct strbuf qname; |
1410 | char *cp = patch->new_name ? patch->new_name : patch->old_name; | |
1411 | int max, add, del; | |
3f40315a | 1412 | |
663af342 PH |
1413 | strbuf_init(&qname, 0); |
1414 | quote_c_style(cp, &qname, NULL, 0); | |
22943f1a | 1415 | |
3f40315a LT |
1416 | /* |
1417 | * "scale" the filename | |
1418 | */ | |
3f40315a LT |
1419 | max = max_len; |
1420 | if (max > 50) | |
1421 | max = 50; | |
663af342 PH |
1422 | |
1423 | if (qname.len > max) { | |
1424 | cp = strchr(qname.buf + qname.len + 3 - max, '/'); | |
1425 | if (!cp) | |
1426 | cp = qname.buf + qname.len + 3 - max; | |
1427 | strbuf_splice(&qname, 0, cp - qname.buf, "...", 3); | |
1428 | } | |
1429 | ||
1430 | if (patch->is_binary) { | |
1431 | printf(" %-*s | Bin\n", max, qname.buf); | |
1432 | strbuf_release(&qname); | |
1433 | return; | |
62917097 | 1434 | } |
663af342 PH |
1435 | |
1436 | printf(" %-*s |", max, qname.buf); | |
1437 | strbuf_release(&qname); | |
3f40315a LT |
1438 | |
1439 | /* | |
1440 | * scale the add/delete | |
1441 | */ | |
663af342 | 1442 | max = max + max_change > 70 ? 70 - max : max_change; |
95bedc9e LT |
1443 | add = patch->lines_added; |
1444 | del = patch->lines_deleted; | |
95bedc9e | 1445 | |
69f956e1 | 1446 | if (max_change > 0) { |
663af342 | 1447 | int total = ((add + del) * max + max_change / 2) / max_change; |
69f956e1 SV |
1448 | add = (add * max + max_change / 2) / max_change; |
1449 | del = total - add; | |
1450 | } | |
663af342 PH |
1451 | printf("%5d %.*s%.*s\n", patch->lines_added + patch->lines_deleted, |
1452 | add, pluses, del, minuses); | |
3f40315a LT |
1453 | } |
1454 | ||
c7f9cb14 | 1455 | static int read_old_data(struct stat *st, const char *path, struct strbuf *buf) |
3cca928d | 1456 | { |
3cca928d LT |
1457 | switch (st->st_mode & S_IFMT) { |
1458 | case S_IFLNK: | |
c7f9cb14 PH |
1459 | strbuf_grow(buf, st->st_size); |
1460 | if (readlink(path, buf->buf, st->st_size) != st->st_size) | |
1461 | return -1; | |
1462 | strbuf_setlen(buf, st->st_size); | |
1463 | return 0; | |
3cca928d | 1464 | case S_IFREG: |
387e7e19 PH |
1465 | if (strbuf_read_file(buf, path, st->st_size) != st->st_size) |
1466 | return error("unable to open or read %s", path); | |
c7f9cb14 PH |
1467 | convert_to_git(path, buf->buf, buf->len, buf); |
1468 | return 0; | |
3cca928d LT |
1469 | default: |
1470 | return -1; | |
1471 | } | |
1472 | } | |
1473 | ||
81bf96bb JH |
1474 | static int find_offset(const char *buf, unsigned long size, |
1475 | const char *fragment, unsigned long fragsize, | |
1476 | int line, int *lines) | |
3cca928d | 1477 | { |
6e7c92a9 LT |
1478 | int i; |
1479 | unsigned long start, backwards, forwards; | |
3cca928d LT |
1480 | |
1481 | if (fragsize > size) | |
1482 | return -1; | |
1483 | ||
1484 | start = 0; | |
1485 | if (line > 1) { | |
3cca928d | 1486 | unsigned long offset = 0; |
6e7c92a9 LT |
1487 | i = line-1; |
1488 | while (offset + fragsize <= size) { | |
3cca928d LT |
1489 | if (buf[offset++] == '\n') { |
1490 | start = offset; | |
6e7c92a9 | 1491 | if (!--i) |
3cca928d LT |
1492 | break; |
1493 | } | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | /* Exact line number? */ | |
6b763c42 JH |
1498 | if ((start + fragsize <= size) && |
1499 | !memcmp(buf + start, fragment, fragsize)) | |
3cca928d LT |
1500 | return start; |
1501 | ||
6e7c92a9 LT |
1502 | /* |
1503 | * There's probably some smart way to do this, but I'll leave | |
1504 | * that to the smart and beautiful people. I'm simple and stupid. | |
1505 | */ | |
1506 | backwards = start; | |
1507 | forwards = start; | |
1508 | for (i = 0; ; i++) { | |
1509 | unsigned long try; | |
1510 | int n; | |
1511 | ||
1512 | /* "backward" */ | |
1513 | if (i & 1) { | |
1514 | if (!backwards) { | |
1515 | if (forwards + fragsize > size) | |
1516 | break; | |
1517 | continue; | |
1518 | } | |
1519 | do { | |
1520 | --backwards; | |
1521 | } while (backwards && buf[backwards-1] != '\n'); | |
1522 | try = backwards; | |
1523 | } else { | |
1524 | while (forwards + fragsize <= size) { | |
1525 | if (buf[forwards++] == '\n') | |
1526 | break; | |
1527 | } | |
1528 | try = forwards; | |
1529 | } | |
1530 | ||
1531 | if (try + fragsize > size) | |
1532 | continue; | |
1533 | if (memcmp(buf + try, fragment, fragsize)) | |
1534 | continue; | |
1535 | n = (i >> 1)+1; | |
1536 | if (i & 1) | |
1537 | n = -n; | |
47495887 | 1538 | *lines = n; |
6e7c92a9 LT |
1539 | return try; |
1540 | } | |
1541 | ||
3cca928d LT |
1542 | /* |
1543 | * We should start searching forward and backward. | |
1544 | */ | |
1545 | return -1; | |
1546 | } | |
1547 | ||
47495887 EB |
1548 | static void remove_first_line(const char **rbuf, int *rsize) |
1549 | { | |
1550 | const char *buf = *rbuf; | |
1551 | int size = *rsize; | |
1552 | unsigned long offset; | |
1553 | offset = 0; | |
1554 | while (offset <= size) { | |
1555 | if (buf[offset++] == '\n') | |
1556 | break; | |
1557 | } | |
1558 | *rsize = size - offset; | |
1559 | *rbuf = buf + offset; | |
1560 | } | |
1561 | ||
1562 | static void remove_last_line(const char **rbuf, int *rsize) | |
1563 | { | |
1564 | const char *buf = *rbuf; | |
1565 | int size = *rsize; | |
1566 | unsigned long offset; | |
1567 | offset = size - 1; | |
1568 | while (offset > 0) { | |
1569 | if (buf[--offset] == '\n') | |
1570 | break; | |
1571 | } | |
1572 | *rsize = offset + 1; | |
1573 | } | |
1574 | ||
cf1b7869 JH |
1575 | static int apply_line(char *output, const char *patch, int plen, |
1576 | unsigned ws_rule) | |
b5767dd6 | 1577 | { |
81bf96bb JH |
1578 | /* |
1579 | * plen is number of bytes to be copied from patch, | |
b5767dd6 | 1580 | * starting at patch+1 (patch[0] is '+'). Typically |
d0c25035 JH |
1581 | * patch[plen] is '\n', unless this is the incomplete |
1582 | * last line. | |
b5767dd6 | 1583 | */ |
d0c25035 | 1584 | int i; |
b5767dd6 | 1585 | int add_nl_to_tail = 0; |
d0c25035 JH |
1586 | int fixed = 0; |
1587 | int last_tab_in_indent = -1; | |
1588 | int last_space_in_indent = -1; | |
1589 | int need_fix_leading_space = 0; | |
1590 | char *buf; | |
1591 | ||
81bf96bb | 1592 | if ((ws_error_action != correct_ws_error) || !whitespace_error || |
63e50d49 | 1593 | *patch != '+') { |
d0c25035 JH |
1594 | memcpy(output, patch + 1, plen); |
1595 | return plen; | |
1596 | } | |
1597 | ||
81bf96bb JH |
1598 | /* |
1599 | * Strip trailing whitespace | |
1600 | */ | |
cf1b7869 | 1601 | if ((ws_rule & WS_TRAILING_SPACE) && |
d5a41641 | 1602 | (1 < plen && isspace(patch[plen-1]))) { |
b5767dd6 JH |
1603 | if (patch[plen] == '\n') |
1604 | add_nl_to_tail = 1; | |
1605 | plen--; | |
1606 | while (0 < plen && isspace(patch[plen])) | |
1607 | plen--; | |
d0c25035 | 1608 | fixed = 1; |
b5767dd6 | 1609 | } |
d0c25035 | 1610 | |
81bf96bb JH |
1611 | /* |
1612 | * Check leading whitespaces (indent) | |
1613 | */ | |
d0c25035 JH |
1614 | for (i = 1; i < plen; i++) { |
1615 | char ch = patch[i]; | |
1616 | if (ch == '\t') { | |
1617 | last_tab_in_indent = i; | |
cf1b7869 | 1618 | if ((ws_rule & WS_SPACE_BEFORE_TAB) && |
d5a41641 JH |
1619 | 0 <= last_space_in_indent) |
1620 | need_fix_leading_space = 1; | |
1621 | } else if (ch == ' ') { | |
1622 | last_space_in_indent = i; | |
cf1b7869 | 1623 | if ((ws_rule & WS_INDENT_WITH_NON_TAB) && |
d5a41641 JH |
1624 | last_tab_in_indent < 0 && |
1625 | 8 <= i) | |
d0c25035 JH |
1626 | need_fix_leading_space = 1; |
1627 | } | |
d0c25035 JH |
1628 | else |
1629 | break; | |
1630 | } | |
1631 | ||
1632 | buf = output; | |
1633 | if (need_fix_leading_space) { | |
d7416eca | 1634 | int consecutive_spaces = 0; |
d5a41641 JH |
1635 | int last = last_tab_in_indent + 1; |
1636 | ||
cf1b7869 | 1637 | if (ws_rule & WS_INDENT_WITH_NON_TAB) { |
d5a41641 JH |
1638 | /* have "last" point at one past the indent */ |
1639 | if (last_tab_in_indent < last_space_in_indent) | |
1640 | last = last_space_in_indent + 1; | |
1641 | else | |
1642 | last = last_tab_in_indent + 1; | |
1643 | } | |
1644 | ||
81bf96bb | 1645 | /* |
d5a41641 JH |
1646 | * between patch[1..last], strip the funny spaces, |
1647 | * updating them to tab as needed. | |
d0c25035 | 1648 | */ |
d5a41641 | 1649 | for (i = 1; i < last; i++, plen--) { |
d0c25035 | 1650 | char ch = patch[i]; |
d7416eca BF |
1651 | if (ch != ' ') { |
1652 | consecutive_spaces = 0; | |
d0c25035 | 1653 | *output++ = ch; |
d7416eca BF |
1654 | } else { |
1655 | consecutive_spaces++; | |
1656 | if (consecutive_spaces == 8) { | |
1657 | *output++ = '\t'; | |
1658 | consecutive_spaces = 0; | |
1659 | } | |
1660 | } | |
d0c25035 | 1661 | } |
d5a41641 JH |
1662 | while (0 < consecutive_spaces--) |
1663 | *output++ = ' '; | |
d0c25035 | 1664 | fixed = 1; |
d5a41641 | 1665 | i = last; |
d0c25035 JH |
1666 | } |
1667 | else | |
1668 | i = 1; | |
1669 | ||
1670 | memcpy(output, patch + i, plen); | |
b5767dd6 JH |
1671 | if (add_nl_to_tail) |
1672 | output[plen++] = '\n'; | |
d0c25035 | 1673 | if (fixed) |
c94bf41c | 1674 | applied_after_fixing_ws++; |
d0c25035 | 1675 | return output + plen - buf; |
b5767dd6 JH |
1676 | } |
1677 | ||
81bf96bb | 1678 | static int apply_one_fragment(struct strbuf *buf, struct fragment *frag, |
cf1b7869 | 1679 | int inaccurate_eof, unsigned ws_rule) |
3cca928d | 1680 | { |
65aadb92 | 1681 | int match_beginning, match_end; |
3cca928d LT |
1682 | const char *patch = frag->patch; |
1683 | int offset, size = frag->size; | |
1684 | char *old = xmalloc(size); | |
1685 | char *new = xmalloc(size); | |
47495887 | 1686 | const char *oldlines, *newlines; |
3cca928d | 1687 | int oldsize = 0, newsize = 0; |
077e1af5 | 1688 | int new_blank_lines_at_end = 0; |
47495887 EB |
1689 | unsigned long leading, trailing; |
1690 | int pos, lines; | |
3cca928d LT |
1691 | |
1692 | while (size > 0) { | |
e5a94313 | 1693 | char first; |
3cca928d LT |
1694 | int len = linelen(patch, size); |
1695 | int plen; | |
077e1af5 | 1696 | int added_blank_line = 0; |
3cca928d LT |
1697 | |
1698 | if (!len) | |
1699 | break; | |
1700 | ||
1701 | /* | |
1702 | * "plen" is how much of the line we should use for | |
1703 | * the actual patch data. Normally we just remove the | |
1704 | * first character on the line, but if the line is | |
1705 | * followed by "\ No newline", then we also remove the | |
1706 | * last one (which is the newline, of course). | |
1707 | */ | |
1708 | plen = len-1; | |
8b64647d | 1709 | if (len < size && patch[len] == '\\') |
3cca928d | 1710 | plen--; |
e5a94313 | 1711 | first = *patch; |
f686d030 | 1712 | if (apply_in_reverse) { |
e5a94313 JS |
1713 | if (first == '-') |
1714 | first = '+'; | |
1715 | else if (first == '+') | |
1716 | first = '-'; | |
1717 | } | |
efe7f358 | 1718 | |
e5a94313 | 1719 | switch (first) { |
b507b465 LT |
1720 | case '\n': |
1721 | /* Newer GNU diff, empty context line */ | |
1722 | if (plen < 0) | |
1723 | /* ... followed by '\No newline'; nothing */ | |
1724 | break; | |
1725 | old[oldsize++] = '\n'; | |
1726 | new[newsize++] = '\n'; | |
1727 | break; | |
3cca928d LT |
1728 | case ' ': |
1729 | case '-': | |
1730 | memcpy(old + oldsize, patch + 1, plen); | |
1731 | oldsize += plen; | |
e5a94313 | 1732 | if (first == '-') |
3cca928d LT |
1733 | break; |
1734 | /* Fall-through for ' ' */ | |
1735 | case '+': | |
077e1af5 JH |
1736 | if (first != '+' || !no_add) { |
1737 | int added = apply_line(new + newsize, patch, | |
cf1b7869 | 1738 | plen, ws_rule); |
077e1af5 JH |
1739 | newsize += added; |
1740 | if (first == '+' && | |
1741 | added == 1 && new[newsize-1] == '\n') | |
1742 | added_blank_line = 1; | |
1743 | } | |
3cca928d LT |
1744 | break; |
1745 | case '@': case '\\': | |
1746 | /* Ignore it, we already handled it */ | |
1747 | break; | |
1748 | default: | |
aeabfa07 JS |
1749 | if (apply_verbosely) |
1750 | error("invalid start of line: '%c'", first); | |
3cca928d LT |
1751 | return -1; |
1752 | } | |
077e1af5 JH |
1753 | if (added_blank_line) |
1754 | new_blank_lines_at_end++; | |
1755 | else | |
1756 | new_blank_lines_at_end = 0; | |
3cca928d LT |
1757 | patch += len; |
1758 | size -= len; | |
1759 | } | |
1760 | ||
81bf96bb JH |
1761 | if (inaccurate_eof && |
1762 | oldsize > 0 && old[oldsize - 1] == '\n' && | |
1763 | newsize > 0 && new[newsize - 1] == '\n') { | |
5b5d4d9e JS |
1764 | oldsize--; |
1765 | newsize--; | |
1766 | } | |
47495887 EB |
1767 | |
1768 | oldlines = old; | |
1769 | newlines = new; | |
1770 | leading = frag->leading; | |
1771 | trailing = frag->trailing; | |
1bf1a859 LT |
1772 | |
1773 | /* | |
65aadb92 JH |
1774 | * If we don't have any leading/trailing data in the patch, |
1775 | * we want it to match at the beginning/end of the file. | |
4be60962 JH |
1776 | * |
1777 | * But that would break if the patch is generated with | |
1778 | * --unified=0; sane people wouldn't do that to cause us | |
1779 | * trouble, but we try to please not so sane ones as well. | |
1bf1a859 | 1780 | */ |
4be60962 JH |
1781 | if (unidiff_zero) { |
1782 | match_beginning = (!leading && !frag->oldpos); | |
1783 | match_end = 0; | |
1784 | } | |
1785 | else { | |
1786 | match_beginning = !leading && (frag->oldpos == 1); | |
1787 | match_end = !trailing; | |
1788 | } | |
1bf1a859 | 1789 | |
47495887 EB |
1790 | lines = 0; |
1791 | pos = frag->newpos; | |
1792 | for (;;) { | |
c7f9cb14 | 1793 | offset = find_offset(buf->buf, buf->len, |
57dc397c | 1794 | oldlines, oldsize, pos, &lines); |
c7f9cb14 | 1795 | if (match_end && offset + oldsize != buf->len) |
1bf1a859 | 1796 | offset = -1; |
65aadb92 JH |
1797 | if (match_beginning && offset) |
1798 | offset = -1; | |
47495887 | 1799 | if (offset >= 0) { |
81bf96bb | 1800 | if (ws_error_action == correct_ws_error && |
c7f9cb14 | 1801 | (buf->len - oldsize - offset == 0)) /* end of file? */ |
077e1af5 | 1802 | newsize -= new_blank_lines_at_end; |
efe7f358 | 1803 | |
47495887 EB |
1804 | /* Warn if it was necessary to reduce the number |
1805 | * of context lines. | |
1806 | */ | |
57dc397c JH |
1807 | if ((leading != frag->leading) || |
1808 | (trailing != frag->trailing)) | |
1809 | fprintf(stderr, "Context reduced to (%ld/%ld)" | |
1810 | " to apply fragment at %d\n", | |
47495887 EB |
1811 | leading, trailing, pos + lines); |
1812 | ||
c7f9cb14 | 1813 | strbuf_splice(buf, offset, oldsize, newlines, newsize); |
47495887 | 1814 | offset = 0; |
47495887 EB |
1815 | break; |
1816 | } | |
1817 | ||
1818 | /* Am I at my context limits? */ | |
1819 | if ((leading <= p_context) && (trailing <= p_context)) | |
1820 | break; | |
65aadb92 JH |
1821 | if (match_beginning || match_end) { |
1822 | match_beginning = match_end = 0; | |
1bf1a859 LT |
1823 | continue; |
1824 | } | |
81bf96bb JH |
1825 | /* |
1826 | * Reduce the number of context lines; reduce both | |
1827 | * leading and trailing if they are equal otherwise | |
1828 | * just reduce the larger context. | |
47495887 EB |
1829 | */ |
1830 | if (leading >= trailing) { | |
1831 | remove_first_line(&oldlines, &oldsize); | |
1832 | remove_first_line(&newlines, &newsize); | |
1833 | pos--; | |
1834 | leading--; | |
1835 | } | |
1836 | if (trailing > leading) { | |
1837 | remove_last_line(&oldlines, &oldsize); | |
1838 | remove_last_line(&newlines, &newsize); | |
1839 | trailing--; | |
6e7c92a9 | 1840 | } |
3cca928d LT |
1841 | } |
1842 | ||
aeabfa07 JS |
1843 | if (offset && apply_verbosely) |
1844 | error("while searching for:\n%.*s", oldsize, oldlines); | |
1845 | ||
3cca928d LT |
1846 | free(old); |
1847 | free(new); | |
1848 | return offset; | |
1849 | } | |
1850 | ||
c7f9cb14 | 1851 | static int apply_binary_fragment(struct strbuf *buf, struct patch *patch) |
0660626c | 1852 | { |
0660626c | 1853 | struct fragment *fragment = patch->fragments; |
c7f9cb14 PH |
1854 | unsigned long len; |
1855 | void *dst; | |
0660626c | 1856 | |
3cd4f5e8 JH |
1857 | /* Binary patch is irreversible without the optional second hunk */ |
1858 | if (apply_in_reverse) { | |
1859 | if (!fragment->next) | |
1860 | return error("cannot reverse-apply a binary patch " | |
1861 | "without the reverse hunk to '%s'", | |
1862 | patch->new_name | |
1863 | ? patch->new_name : patch->old_name); | |
03eb8f8a | 1864 | fragment = fragment->next; |
3cd4f5e8 | 1865 | } |
3cd4f5e8 | 1866 | switch (fragment->binary_patch_method) { |
0660626c | 1867 | case BINARY_DELTA_DEFLATED: |
c7f9cb14 PH |
1868 | dst = patch_delta(buf->buf, buf->len, fragment->patch, |
1869 | fragment->size, &len); | |
1870 | if (!dst) | |
1871 | return -1; | |
1872 | /* XXX patch_delta NUL-terminates */ | |
1873 | strbuf_attach(buf, dst, len, len + 1); | |
1874 | return 0; | |
0660626c | 1875 | case BINARY_LITERAL_DEFLATED: |
c7f9cb14 PH |
1876 | strbuf_reset(buf); |
1877 | strbuf_add(buf, fragment->patch, fragment->size); | |
1878 | return 0; | |
0660626c | 1879 | } |
c7f9cb14 | 1880 | return -1; |
0660626c JH |
1881 | } |
1882 | ||
c7f9cb14 | 1883 | static int apply_binary(struct strbuf *buf, struct patch *patch) |
3cca928d | 1884 | { |
011f4274 | 1885 | const char *name = patch->old_name ? patch->old_name : patch->new_name; |
051308f6 | 1886 | unsigned char sha1[20]; |
011f4274 | 1887 | |
81bf96bb JH |
1888 | /* |
1889 | * For safety, we require patch index line to contain | |
051308f6 JH |
1890 | * full 40-byte textual SHA1 for old and new, at least for now. |
1891 | */ | |
1892 | if (strlen(patch->old_sha1_prefix) != 40 || | |
1893 | strlen(patch->new_sha1_prefix) != 40 || | |
1894 | get_sha1_hex(patch->old_sha1_prefix, sha1) || | |
1895 | get_sha1_hex(patch->new_sha1_prefix, sha1)) | |
1896 | return error("cannot apply binary patch to '%s' " | |
1897 | "without full index line", name); | |
011f4274 | 1898 | |
051308f6 | 1899 | if (patch->old_name) { |
81bf96bb JH |
1900 | /* |
1901 | * See if the old one matches what the patch | |
051308f6 | 1902 | * applies to. |
011f4274 | 1903 | */ |
c7f9cb14 | 1904 | hash_sha1_file(buf->buf, buf->len, blob_type, sha1); |
051308f6 JH |
1905 | if (strcmp(sha1_to_hex(sha1), patch->old_sha1_prefix)) |
1906 | return error("the patch applies to '%s' (%s), " | |
1907 | "which does not match the " | |
1908 | "current contents.", | |
1909 | name, sha1_to_hex(sha1)); | |
1910 | } | |
1911 | else { | |
1912 | /* Otherwise, the old one must be empty. */ | |
c7f9cb14 | 1913 | if (buf->len) |
051308f6 JH |
1914 | return error("the patch applies to an empty " |
1915 | "'%s' but it is not empty", name); | |
1916 | } | |
011f4274 | 1917 | |
0660626c | 1918 | get_sha1_hex(patch->new_sha1_prefix, sha1); |
0bef57ee | 1919 | if (is_null_sha1(sha1)) { |
c7f9cb14 | 1920 | strbuf_release(buf); |
051308f6 | 1921 | return 0; /* deletion patch */ |
0660626c | 1922 | } |
011f4274 | 1923 | |
051308f6 | 1924 | if (has_sha1_file(sha1)) { |
0660626c | 1925 | /* We already have the postimage */ |
21666f1a | 1926 | enum object_type type; |
051308f6 | 1927 | unsigned long size; |
c7f9cb14 | 1928 | char *result; |
051308f6 | 1929 | |
c7f9cb14 PH |
1930 | result = read_sha1_file(sha1, &type, &size); |
1931 | if (!result) | |
051308f6 JH |
1932 | return error("the necessary postimage %s for " |
1933 | "'%s' cannot be read", | |
1934 | patch->new_sha1_prefix, name); | |
c7f9cb14 PH |
1935 | /* XXX read_sha1_file NUL-terminates */ |
1936 | strbuf_attach(buf, result, size, size + 1); | |
1937 | } else { | |
81bf96bb JH |
1938 | /* |
1939 | * We have verified buf matches the preimage; | |
0660626c JH |
1940 | * apply the patch data to it, which is stored |
1941 | * in the patch->fragments->{patch,size}. | |
011f4274 | 1942 | */ |
c7f9cb14 | 1943 | if (apply_binary_fragment(buf, patch)) |
051308f6 JH |
1944 | return error("binary patch does not apply to '%s'", |
1945 | name); | |
011f4274 | 1946 | |
051308f6 | 1947 | /* verify that the result matches */ |
c7f9cb14 | 1948 | hash_sha1_file(buf->buf, buf->len, blob_type, sha1); |
051308f6 | 1949 | if (strcmp(sha1_to_hex(sha1), patch->new_sha1_prefix)) |
c7f9cb14 PH |
1950 | return error("binary patch to '%s' creates incorrect result (expecting %s, got %s)", |
1951 | name, patch->new_sha1_prefix, sha1_to_hex(sha1)); | |
011f4274 | 1952 | } |
3cca928d | 1953 | |
051308f6 JH |
1954 | return 0; |
1955 | } | |
1956 | ||
c7f9cb14 | 1957 | static int apply_fragments(struct strbuf *buf, struct patch *patch) |
051308f6 JH |
1958 | { |
1959 | struct fragment *frag = patch->fragments; | |
1960 | const char *name = patch->old_name ? patch->old_name : patch->new_name; | |
cf1b7869 JH |
1961 | unsigned ws_rule = patch->ws_rule; |
1962 | unsigned inaccurate_eof = patch->inaccurate_eof; | |
051308f6 JH |
1963 | |
1964 | if (patch->is_binary) | |
c7f9cb14 | 1965 | return apply_binary(buf, patch); |
051308f6 | 1966 | |
3cca928d | 1967 | while (frag) { |
cf1b7869 | 1968 | if (apply_one_fragment(buf, frag, inaccurate_eof, ws_rule)) { |
57dc397c JH |
1969 | error("patch failed: %s:%ld", name, frag->oldpos); |
1970 | if (!apply_with_reject) | |
1971 | return -1; | |
1972 | frag->rejected = 1; | |
1973 | } | |
3cca928d LT |
1974 | frag = frag->next; |
1975 | } | |
30996652 | 1976 | return 0; |
3cca928d LT |
1977 | } |
1978 | ||
c7f9cb14 | 1979 | static int read_file_or_gitlink(struct cache_entry *ce, struct strbuf *buf) |
e06c5a6c SV |
1980 | { |
1981 | if (!ce) | |
1982 | return 0; | |
1983 | ||
1984 | if (S_ISGITLINK(ntohl(ce->ce_mode))) { | |
c7f9cb14 PH |
1985 | strbuf_grow(buf, 100); |
1986 | strbuf_addf(buf, "Subproject commit %s\n", sha1_to_hex(ce->sha1)); | |
e06c5a6c SV |
1987 | } else { |
1988 | enum object_type type; | |
c7f9cb14 PH |
1989 | unsigned long sz; |
1990 | char *result; | |
1991 | ||
1992 | result = read_sha1_file(ce->sha1, &type, &sz); | |
1993 | if (!result) | |
e06c5a6c | 1994 | return -1; |
c7f9cb14 PH |
1995 | /* XXX read_sha1_file NUL-terminates */ |
1996 | strbuf_attach(buf, result, sz, sz + 1); | |
e06c5a6c SV |
1997 | } |
1998 | return 0; | |
1999 | } | |
2000 | ||
04e4888e | 2001 | static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce) |
3cca928d | 2002 | { |
c7f9cb14 | 2003 | struct strbuf buf; |
3cca928d | 2004 | |
c7f9cb14 | 2005 | strbuf_init(&buf, 0); |
04e4888e | 2006 | if (cached) { |
c7f9cb14 | 2007 | if (read_file_or_gitlink(ce, &buf)) |
e06c5a6c | 2008 | return error("read of %s failed", patch->old_name); |
e06c5a6c SV |
2009 | } else if (patch->old_name) { |
2010 | if (S_ISGITLINK(patch->old_mode)) { | |
c7f9cb14 PH |
2011 | if (ce) { |
2012 | read_file_or_gitlink(ce, &buf); | |
2013 | } else { | |
e06c5a6c SV |
2014 | /* |
2015 | * There is no way to apply subproject | |
2016 | * patch without looking at the index. | |
2017 | */ | |
2018 | patch->fragments = NULL; | |
e06c5a6c | 2019 | } |
c7f9cb14 PH |
2020 | } else { |
2021 | if (read_old_data(st, patch->old_name, &buf)) | |
2022 | return error("read of %s failed", patch->old_name); | |
04e4888e JH |
2023 | } |
2024 | } | |
6e7c92a9 | 2025 | |
c7f9cb14 | 2026 | if (apply_fragments(&buf, patch) < 0) |
57dc397c | 2027 | return -1; /* note with --reject this succeeds. */ |
b315c5c0 | 2028 | patch->result = strbuf_detach(&buf, &patch->resultsize); |
5aa7d94c | 2029 | |
4be60962 | 2030 | if (0 < patch->is_delete && patch->resultsize) |
5aa7d94c LT |
2031 | return error("removal patch leaves file contents"); |
2032 | ||
3cca928d LT |
2033 | return 0; |
2034 | } | |
2035 | ||
64cab591 JH |
2036 | static int check_to_create_blob(const char *new_name, int ok_if_exists) |
2037 | { | |
2038 | struct stat nst; | |
2039 | if (!lstat(new_name, &nst)) { | |
2040 | if (S_ISDIR(nst.st_mode) || ok_if_exists) | |
2041 | return 0; | |
2042 | /* | |
2043 | * A leading component of new_name might be a symlink | |
2044 | * that is going to be removed with this patch, but | |
2045 | * still pointing at somewhere that has the path. | |
2046 | * In such a case, path "new_name" does not exist as | |
2047 | * far as git is concerned. | |
2048 | */ | |
2049 | if (has_symlink_leading_path(new_name, NULL)) | |
2050 | return 0; | |
2051 | ||
2052 | return error("%s: already exists in working directory", new_name); | |
2053 | } | |
2054 | else if ((errno != ENOENT) && (errno != ENOTDIR)) | |
2055 | return error("%s: %s", new_name, strerror(errno)); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
e06c5a6c SV |
2059 | static int verify_index_match(struct cache_entry *ce, struct stat *st) |
2060 | { | |
2061 | if (S_ISGITLINK(ntohl(ce->ce_mode))) { | |
2062 | if (!S_ISDIR(st->st_mode)) | |
2063 | return -1; | |
2064 | return 0; | |
2065 | } | |
4bd5b7da | 2066 | return ce_match_stat(ce, st, CE_MATCH_IGNORE_VALID); |
e06c5a6c SV |
2067 | } |
2068 | ||
7f95aef2 | 2069 | static int check_patch(struct patch *patch, struct patch *prev_patch) |
fab2c257 | 2070 | { |
a577284a | 2071 | struct stat st; |
fab2c257 LT |
2072 | const char *old_name = patch->old_name; |
2073 | const char *new_name = patch->new_name; | |
011f4274 | 2074 | const char *name = old_name ? old_name : new_name; |
04e4888e | 2075 | struct cache_entry *ce = NULL; |
7f95aef2 | 2076 | int ok_if_exists; |
fab2c257 | 2077 | |
57dc397c | 2078 | patch->rejected = 1; /* we will drop this after we succeed */ |
e06c5a6c SV |
2079 | |
2080 | /* | |
2081 | * Make sure that we do not have local modifications from the | |
2082 | * index when we are looking at the index. Also make sure | |
2083 | * we have the preimage file to be patched in the work tree, | |
2084 | * unless --cached, which tells git to apply only in the index. | |
2085 | */ | |
fab2c257 | 2086 | if (old_name) { |
04e4888e JH |
2087 | int stat_ret = 0; |
2088 | unsigned st_mode = 0; | |
a577284a | 2089 | |
04e4888e JH |
2090 | if (!cached) |
2091 | stat_ret = lstat(old_name, &st); | |
3cca928d LT |
2092 | if (check_index) { |
2093 | int pos = cache_name_pos(old_name, strlen(old_name)); | |
2094 | if (pos < 0) | |
56d33b11 JH |
2095 | return error("%s: does not exist in index", |
2096 | old_name); | |
04e4888e | 2097 | ce = active_cache[pos]; |
56d33b11 JH |
2098 | if (stat_ret < 0) { |
2099 | struct checkout costate; | |
2100 | if (errno != ENOENT) | |
2101 | return error("%s: %s", old_name, | |
2102 | strerror(errno)); | |
2103 | /* checkout */ | |
2104 | costate.base_dir = ""; | |
2105 | costate.base_dir_len = 0; | |
2106 | costate.force = 0; | |
2107 | costate.quiet = 0; | |
2108 | costate.not_new = 0; | |
2109 | costate.refresh_cache = 1; | |
04e4888e | 2110 | if (checkout_entry(ce, |
de84f99c SP |
2111 | &costate, |
2112 | NULL) || | |
56d33b11 JH |
2113 | lstat(old_name, &st)) |
2114 | return -1; | |
2115 | } | |
e06c5a6c | 2116 | if (!cached && verify_index_match(ce, &st)) |
56d33b11 JH |
2117 | return error("%s: does not match index", |
2118 | old_name); | |
04e4888e JH |
2119 | if (cached) |
2120 | st_mode = ntohl(ce->ce_mode); | |
e06c5a6c | 2121 | } else if (stat_ret < 0) |
56d33b11 JH |
2122 | return error("%s: %s", old_name, strerror(errno)); |
2123 | ||
04e4888e | 2124 | if (!cached) |
185c975f | 2125 | st_mode = ntohl(ce_mode_from_stat(ce, st.st_mode)); |
04e4888e | 2126 | |
3cca928d LT |
2127 | if (patch->is_new < 0) |
2128 | patch->is_new = 0; | |
a577284a | 2129 | if (!patch->old_mode) |
04e4888e JH |
2130 | patch->old_mode = st_mode; |
2131 | if ((st_mode ^ patch->old_mode) & S_IFMT) | |
3cca928d | 2132 | return error("%s: wrong type", old_name); |
04e4888e | 2133 | if (st_mode != patch->old_mode) |
3cca928d | 2134 | fprintf(stderr, "warning: %s has type %o, expected %o\n", |
04e4888e | 2135 | old_name, st_mode, patch->old_mode); |
fab2c257 | 2136 | } |
a577284a | 2137 | |
4be60962 | 2138 | if (new_name && prev_patch && 0 < prev_patch->is_delete && |
7f95aef2 | 2139 | !strcmp(prev_patch->old_name, new_name)) |
81bf96bb JH |
2140 | /* |
2141 | * A type-change diff is always split into a patch to | |
7f95aef2 JH |
2142 | * delete old, immediately followed by a patch to |
2143 | * create new (see diff.c::run_diff()); in such a case | |
2144 | * it is Ok that the entry to be deleted by the | |
2145 | * previous patch is still in the working tree and in | |
2146 | * the index. | |
2147 | */ | |
2148 | ok_if_exists = 1; | |
2149 | else | |
2150 | ok_if_exists = 0; | |
2151 | ||
4be60962 JH |
2152 | if (new_name && |
2153 | ((0 < patch->is_new) | (0 < patch->is_rename) | patch->is_copy)) { | |
7f95aef2 JH |
2154 | if (check_index && |
2155 | cache_name_pos(new_name, strlen(new_name)) >= 0 && | |
2156 | !ok_if_exists) | |
a577284a | 2157 | return error("%s: already exists in index", new_name); |
d91d4c2c | 2158 | if (!cached) { |
64cab591 JH |
2159 | int err = check_to_create_blob(new_name, ok_if_exists); |
2160 | if (err) | |
2161 | return err; | |
d91d4c2c | 2162 | } |
35cc4bcd | 2163 | if (!patch->new_mode) { |
4be60962 | 2164 | if (0 < patch->is_new) |
35cc4bcd JS |
2165 | patch->new_mode = S_IFREG | 0644; |
2166 | else | |
2167 | patch->new_mode = patch->old_mode; | |
2168 | } | |
fab2c257 | 2169 | } |
3cca928d LT |
2170 | |
2171 | if (new_name && old_name) { | |
2172 | int same = !strcmp(old_name, new_name); | |
2173 | if (!patch->new_mode) | |
2174 | patch->new_mode = patch->old_mode; | |
2175 | if ((patch->old_mode ^ patch->new_mode) & S_IFMT) | |
2176 | return error("new mode (%o) of %s does not match old mode (%o)%s%s", | |
2177 | patch->new_mode, new_name, patch->old_mode, | |
2178 | same ? "" : " of ", same ? "" : old_name); | |
04e4888e | 2179 | } |
3cca928d | 2180 | |
04e4888e | 2181 | if (apply_data(patch, &st, ce) < 0) |
011f4274 | 2182 | return error("%s: patch does not apply", name); |
57dc397c | 2183 | patch->rejected = 0; |
a577284a | 2184 | return 0; |
fab2c257 LT |
2185 | } |
2186 | ||
a577284a | 2187 | static int check_patch_list(struct patch *patch) |
19c58fb8 | 2188 | { |
7f95aef2 | 2189 | struct patch *prev_patch = NULL; |
60b7f38e | 2190 | int err = 0; |
a577284a | 2191 | |
7f95aef2 | 2192 | for (prev_patch = NULL; patch ; patch = patch->next) { |
a2bf404e JH |
2193 | if (apply_verbosely) |
2194 | say_patch_name(stderr, | |
2195 | "Checking patch ", patch, "...\n"); | |
60b7f38e | 2196 | err |= check_patch(patch, prev_patch); |
7f95aef2 JH |
2197 | prev_patch = patch; |
2198 | } | |
60b7f38e | 2199 | return err; |
a577284a LT |
2200 | } |
2201 | ||
ece7b749 JS |
2202 | /* This function tries to read the sha1 from the current index */ |
2203 | static int get_current_sha1(const char *path, unsigned char *sha1) | |
2204 | { | |
2205 | int pos; | |
2206 | ||
2207 | if (read_cache() < 0) | |
2208 | return -1; | |
2209 | pos = cache_name_pos(path, strlen(path)); | |
2210 | if (pos < 0) | |
2211 | return -1; | |
2212 | hashcpy(sha1, active_cache[pos]->sha1); | |
2213 | return 0; | |
2214 | } | |
2215 | ||
7a988699 JS |
2216 | /* Build an index that contains the just the files needed for a 3way merge */ |
2217 | static void build_fake_ancestor(struct patch *list, const char *filename) | |
2cf67f1e JH |
2218 | { |
2219 | struct patch *patch; | |
7a988699 JS |
2220 | struct index_state result = { 0 }; |
2221 | int fd; | |
2cf67f1e JH |
2222 | |
2223 | /* Once we start supporting the reverse patch, it may be | |
2224 | * worth showing the new sha1 prefix, but until then... | |
2225 | */ | |
2226 | for (patch = list; patch; patch = patch->next) { | |
2227 | const unsigned char *sha1_ptr; | |
2228 | unsigned char sha1[20]; | |
7a988699 | 2229 | struct cache_entry *ce; |
2cf67f1e JH |
2230 | const char *name; |
2231 | ||
2232 | name = patch->old_name ? patch->old_name : patch->new_name; | |
4be60962 | 2233 | if (0 < patch->is_new) |
7a988699 | 2234 | continue; |
2cf67f1e | 2235 | else if (get_sha1(patch->old_sha1_prefix, sha1)) |
ece7b749 JS |
2236 | /* git diff has no index line for mode/type changes */ |
2237 | if (!patch->lines_added && !patch->lines_deleted) { | |
2238 | if (get_current_sha1(patch->new_name, sha1) || | |
2239 | get_current_sha1(patch->old_name, sha1)) | |
2240 | die("mode change for %s, which is not " | |
2241 | "in current HEAD", name); | |
2242 | sha1_ptr = sha1; | |
2243 | } else | |
2244 | die("sha1 information is lacking or useless " | |
2245 | "(%s).", name); | |
2cf67f1e JH |
2246 | else |
2247 | sha1_ptr = sha1; | |
22943f1a | 2248 | |
7a988699 JS |
2249 | ce = make_cache_entry(patch->old_mode, sha1_ptr, name, 0, 0); |
2250 | if (add_index_entry(&result, ce, ADD_CACHE_OK_TO_ADD)) | |
2251 | die ("Could not add %s to temporary index", name); | |
2cf67f1e | 2252 | } |
7a988699 JS |
2253 | |
2254 | fd = open(filename, O_WRONLY | O_CREAT, 0666); | |
2255 | if (fd < 0 || write_index(&result, fd) || close(fd)) | |
2256 | die ("Could not write temporary index to %s", filename); | |
2257 | ||
2258 | discard_index(&result); | |
2cf67f1e JH |
2259 | } |
2260 | ||
a577284a LT |
2261 | static void stat_patch_list(struct patch *patch) |
2262 | { | |
2263 | int files, adds, dels; | |
2264 | ||
2265 | for (files = adds = dels = 0 ; patch ; patch = patch->next) { | |
2266 | files++; | |
2267 | adds += patch->lines_added; | |
2268 | dels += patch->lines_deleted; | |
2269 | show_stats(patch); | |
2270 | } | |
2271 | ||
2272 | printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels); | |
3f40315a LT |
2273 | } |
2274 | ||
7d8b7c21 JH |
2275 | static void numstat_patch_list(struct patch *patch) |
2276 | { | |
2277 | for ( ; patch; patch = patch->next) { | |
2278 | const char *name; | |
49e3343c | 2279 | name = patch->new_name ? patch->new_name : patch->old_name; |
ef58d958 JH |
2280 | if (patch->is_binary) |
2281 | printf("-\t-\t"); | |
2282 | else | |
663af342 PH |
2283 | printf("%d\t%d\t", patch->lines_added, patch->lines_deleted); |
2284 | write_name_quoted(name, stdout, line_termination); | |
7d8b7c21 JH |
2285 | } |
2286 | } | |
2287 | ||
96c912a4 JH |
2288 | static void show_file_mode_name(const char *newdelete, unsigned int mode, const char *name) |
2289 | { | |
2290 | if (mode) | |
2291 | printf(" %s mode %06o %s\n", newdelete, mode, name); | |
2292 | else | |
2293 | printf(" %s %s\n", newdelete, name); | |
2294 | } | |
2295 | ||
2296 | static void show_mode_change(struct patch *p, int show_name) | |
2297 | { | |
2298 | if (p->old_mode && p->new_mode && p->old_mode != p->new_mode) { | |
2299 | if (show_name) | |
2300 | printf(" mode change %06o => %06o %s\n", | |
2301 | p->old_mode, p->new_mode, p->new_name); | |
2302 | else | |
2303 | printf(" mode change %06o => %06o\n", | |
2304 | p->old_mode, p->new_mode); | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | static void show_rename_copy(struct patch *p) | |
2309 | { | |
2310 | const char *renamecopy = p->is_rename ? "rename" : "copy"; | |
2311 | const char *old, *new; | |
2312 | ||
2313 | /* Find common prefix */ | |
2314 | old = p->old_name; | |
2315 | new = p->new_name; | |
2316 | while (1) { | |
2317 | const char *slash_old, *slash_new; | |
2318 | slash_old = strchr(old, '/'); | |
2319 | slash_new = strchr(new, '/'); | |
2320 | if (!slash_old || | |
2321 | !slash_new || | |
2322 | slash_old - old != slash_new - new || | |
2323 | memcmp(old, new, slash_new - new)) | |
2324 | break; | |
2325 | old = slash_old + 1; | |
2326 | new = slash_new + 1; | |
2327 | } | |
2328 | /* p->old_name thru old is the common prefix, and old and new | |
2329 | * through the end of names are renames | |
2330 | */ | |
2331 | if (old != p->old_name) | |
2332 | printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy, | |
e30e814d | 2333 | (int)(old - p->old_name), p->old_name, |
96c912a4 JH |
2334 | old, new, p->score); |
2335 | else | |
2336 | printf(" %s %s => %s (%d%%)\n", renamecopy, | |
2337 | p->old_name, p->new_name, p->score); | |
2338 | show_mode_change(p, 0); | |
2339 | } | |
2340 | ||
2341 | static void summary_patch_list(struct patch *patch) | |
2342 | { | |
2343 | struct patch *p; | |
2344 | ||
2345 | for (p = patch; p; p = p->next) { | |
2346 | if (p->is_new) | |
2347 | show_file_mode_name("create", p->new_mode, p->new_name); | |
2348 | else if (p->is_delete) | |
2349 | show_file_mode_name("delete", p->old_mode, p->old_name); | |
2350 | else { | |
2351 | if (p->is_rename || p->is_copy) | |
2352 | show_rename_copy(p); | |
2353 | else { | |
2354 | if (p->score) { | |
2355 | printf(" rewrite %s (%d%%)\n", | |
2356 | p->new_name, p->score); | |
2357 | show_mode_change(p, 0); | |
2358 | } | |
2359 | else | |
2360 | show_mode_change(p, 1); | |
2361 | } | |
2362 | } | |
2363 | } | |
2364 | } | |
2365 | ||
3f40315a LT |
2366 | static void patch_stats(struct patch *patch) |
2367 | { | |
2368 | int lines = patch->lines_added + patch->lines_deleted; | |
2369 | ||
2370 | if (lines > max_change) | |
2371 | max_change = lines; | |
2372 | if (patch->old_name) { | |
22943f1a JH |
2373 | int len = quote_c_style(patch->old_name, NULL, NULL, 0); |
2374 | if (!len) | |
2375 | len = strlen(patch->old_name); | |
3f40315a LT |
2376 | if (len > max_len) |
2377 | max_len = len; | |
2378 | } | |
2379 | if (patch->new_name) { | |
22943f1a JH |
2380 | int len = quote_c_style(patch->new_name, NULL, NULL, 0); |
2381 | if (!len) | |
2382 | len = strlen(patch->new_name); | |
3f40315a LT |
2383 | if (len > max_len) |
2384 | max_len = len; | |
2385 | } | |
19c58fb8 LT |
2386 | } |
2387 | ||
aea19457 | 2388 | static void remove_file(struct patch *patch, int rmdir_empty) |
5aa7d94c | 2389 | { |
7da3bf37 | 2390 | if (update_index) { |
5aa7d94c LT |
2391 | if (remove_file_from_cache(patch->old_name) < 0) |
2392 | die("unable to remove %s from index", patch->old_name); | |
2393 | } | |
d234b21c | 2394 | if (!cached) { |
e06c5a6c SV |
2395 | if (S_ISGITLINK(patch->old_mode)) { |
2396 | if (rmdir(patch->old_name)) | |
2397 | warning("unable to remove submodule %s", | |
2398 | patch->old_name); | |
2399 | } else if (!unlink(patch->old_name) && rmdir_empty) { | |
d234b21c AJ |
2400 | char *name = xstrdup(patch->old_name); |
2401 | char *end = strrchr(name, '/'); | |
2402 | while (end) { | |
2403 | *end = 0; | |
2404 | if (rmdir(name)) | |
2405 | break; | |
2406 | end = strrchr(name, '/'); | |
2407 | } | |
2408 | free(name); | |
2409 | } | |
2410 | } | |
5aa7d94c LT |
2411 | } |
2412 | ||
2413 | static void add_index_file(const char *path, unsigned mode, void *buf, unsigned long size) | |
2414 | { | |
2415 | struct stat st; | |
2416 | struct cache_entry *ce; | |
2417 | int namelen = strlen(path); | |
2418 | unsigned ce_size = cache_entry_size(namelen); | |
2419 | ||
7da3bf37 | 2420 | if (!update_index) |
5aa7d94c LT |
2421 | return; |
2422 | ||
90321c10 | 2423 | ce = xcalloc(1, ce_size); |
5aa7d94c LT |
2424 | memcpy(ce->name, path, namelen); |
2425 | ce->ce_mode = create_ce_mode(mode); | |
2426 | ce->ce_flags = htons(namelen); | |
e06c5a6c SV |
2427 | if (S_ISGITLINK(mode)) { |
2428 | const char *s = buf; | |
2429 | ||
2430 | if (get_sha1_hex(s + strlen("Subproject commit "), ce->sha1)) | |
2431 | die("corrupt patch for subproject %s", path); | |
2432 | } else { | |
2433 | if (!cached) { | |
2434 | if (lstat(path, &st) < 0) | |
2435 | die("unable to stat newly created file %s", | |
2436 | path); | |
2437 | fill_stat_cache_info(ce, &st); | |
2438 | } | |
2439 | if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0) | |
2440 | die("unable to create backing store for newly created file %s", path); | |
04e4888e | 2441 | } |
5aa7d94c LT |
2442 | if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0) |
2443 | die("unable to add cache entry for %s", path); | |
2444 | } | |
2445 | ||
1b668341 LT |
2446 | static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size) |
2447 | { | |
ac78e548 | 2448 | int fd; |
5ecd293d | 2449 | struct strbuf nbuf; |
1b668341 | 2450 | |
e06c5a6c SV |
2451 | if (S_ISGITLINK(mode)) { |
2452 | struct stat st; | |
2453 | if (!lstat(path, &st) && S_ISDIR(st.st_mode)) | |
2454 | return 0; | |
2455 | return mkdir(path, 0777); | |
2456 | } | |
2457 | ||
78a8d641 | 2458 | if (has_symlinks && S_ISLNK(mode)) |
2c71810b JH |
2459 | /* Although buf:size is counted string, it also is NUL |
2460 | * terminated. | |
2461 | */ | |
1b668341 | 2462 | return symlink(buf, path); |
cc96fd09 JH |
2463 | |
2464 | fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666); | |
2465 | if (fd < 0) | |
2466 | return -1; | |
2467 | ||
5ecd293d PH |
2468 | strbuf_init(&nbuf, 0); |
2469 | if (convert_to_working_tree(path, buf, size, &nbuf)) { | |
2470 | size = nbuf.len; | |
2471 | buf = nbuf.buf; | |
1b668341 | 2472 | } |
c7f9cb14 PH |
2473 | write_or_die(fd, buf, size); |
2474 | strbuf_release(&nbuf); | |
ac78e548 | 2475 | |
1b668341 LT |
2476 | if (close(fd) < 0) |
2477 | die("closing file %s: %s", path, strerror(errno)); | |
2478 | return 0; | |
2479 | } | |
2480 | ||
5c8af185 LT |
2481 | /* |
2482 | * We optimistically assume that the directories exist, | |
2483 | * which is true 99% of the time anyway. If they don't, | |
2484 | * we create them and try again. | |
2485 | */ | |
8361e1d4 | 2486 | static void create_one_file(char *path, unsigned mode, const char *buf, unsigned long size) |
5c8af185 | 2487 | { |
04e4888e JH |
2488 | if (cached) |
2489 | return; | |
1b668341 LT |
2490 | if (!try_create_file(path, mode, buf, size)) |
2491 | return; | |
5c8af185 | 2492 | |
1b668341 | 2493 | if (errno == ENOENT) { |
8361e1d4 JR |
2494 | if (safe_create_leading_directories(path)) |
2495 | return; | |
1b668341 LT |
2496 | if (!try_create_file(path, mode, buf, size)) |
2497 | return; | |
5c8af185 | 2498 | } |
5c8af185 | 2499 | |
56ac168f | 2500 | if (errno == EEXIST || errno == EACCES) { |
c28c571c JH |
2501 | /* We may be trying to create a file where a directory |
2502 | * used to be. | |
2503 | */ | |
2504 | struct stat st; | |
0afa7644 | 2505 | if (!lstat(path, &st) && (!S_ISDIR(st.st_mode) || !rmdir(path))) |
c28c571c JH |
2506 | errno = EEXIST; |
2507 | } | |
2508 | ||
1b668341 LT |
2509 | if (errno == EEXIST) { |
2510 | unsigned int nr = getpid(); | |
5c8af185 | 2511 | |
1b668341 LT |
2512 | for (;;) { |
2513 | const char *newpath; | |
2514 | newpath = mkpath("%s~%u", path, nr); | |
2515 | if (!try_create_file(newpath, mode, buf, size)) { | |
2516 | if (!rename(newpath, path)) | |
2517 | return; | |
2518 | unlink(newpath); | |
2519 | break; | |
2520 | } | |
2521 | if (errno != EEXIST) | |
2522 | break; | |
d9e08be9 AR |
2523 | ++nr; |
2524 | } | |
5c8af185 | 2525 | } |
1b668341 | 2526 | die("unable to write file %s mode %o", path, mode); |
5c8af185 LT |
2527 | } |
2528 | ||
5aa7d94c LT |
2529 | static void create_file(struct patch *patch) |
2530 | { | |
8361e1d4 | 2531 | char *path = patch->new_name; |
5aa7d94c LT |
2532 | unsigned mode = patch->new_mode; |
2533 | unsigned long size = patch->resultsize; | |
2534 | char *buf = patch->result; | |
2535 | ||
2536 | if (!mode) | |
2537 | mode = S_IFREG | 0644; | |
03ac6e64 | 2538 | create_one_file(path, mode, buf, size); |
1b668341 | 2539 | add_index_file(path, mode, buf, size); |
5aa7d94c LT |
2540 | } |
2541 | ||
eed46644 JH |
2542 | /* phase zero is to remove, phase one is to create */ |
2543 | static void write_out_one_result(struct patch *patch, int phase) | |
5aa7d94c LT |
2544 | { |
2545 | if (patch->is_delete > 0) { | |
eed46644 | 2546 | if (phase == 0) |
aea19457 | 2547 | remove_file(patch, 1); |
5aa7d94c LT |
2548 | return; |
2549 | } | |
2550 | if (patch->is_new > 0 || patch->is_copy) { | |
eed46644 JH |
2551 | if (phase == 1) |
2552 | create_file(patch); | |
5aa7d94c LT |
2553 | return; |
2554 | } | |
2555 | /* | |
2556 | * Rename or modification boils down to the same | |
2557 | * thing: remove the old, write the new | |
2558 | */ | |
eed46644 | 2559 | if (phase == 0) |
93969438 | 2560 | remove_file(patch, patch->is_rename); |
eed46644 | 2561 | if (phase == 1) |
57dc397c | 2562 | create_file(patch); |
5aa7d94c LT |
2563 | } |
2564 | ||
57dc397c JH |
2565 | static int write_out_one_reject(struct patch *patch) |
2566 | { | |
82e2765f JH |
2567 | FILE *rej; |
2568 | char namebuf[PATH_MAX]; | |
57dc397c | 2569 | struct fragment *frag; |
82e2765f | 2570 | int cnt = 0; |
57dc397c | 2571 | |
82e2765f | 2572 | for (cnt = 0, frag = patch->fragments; frag; frag = frag->next) { |
57dc397c JH |
2573 | if (!frag->rejected) |
2574 | continue; | |
82e2765f JH |
2575 | cnt++; |
2576 | } | |
2577 | ||
a2bf404e JH |
2578 | if (!cnt) { |
2579 | if (apply_verbosely) | |
2580 | say_patch_name(stderr, | |
2581 | "Applied patch ", patch, " cleanly.\n"); | |
82e2765f | 2582 | return 0; |
a2bf404e | 2583 | } |
82e2765f JH |
2584 | |
2585 | /* This should not happen, because a removal patch that leaves | |
2586 | * contents are marked "rejected" at the patch level. | |
2587 | */ | |
2588 | if (!patch->new_name) | |
2589 | die("internal error"); | |
2590 | ||
a2bf404e JH |
2591 | /* Say this even without --verbose */ |
2592 | say_patch_name(stderr, "Applying patch ", patch, " with"); | |
2593 | fprintf(stderr, " %d rejects...\n", cnt); | |
2594 | ||
82e2765f JH |
2595 | cnt = strlen(patch->new_name); |
2596 | if (ARRAY_SIZE(namebuf) <= cnt + 5) { | |
2597 | cnt = ARRAY_SIZE(namebuf) - 5; | |
2598 | fprintf(stderr, | |
2599 | "warning: truncating .rej filename to %.*s.rej", | |
2600 | cnt - 1, patch->new_name); | |
2601 | } | |
2602 | memcpy(namebuf, patch->new_name, cnt); | |
2603 | memcpy(namebuf + cnt, ".rej", 5); | |
2604 | ||
2605 | rej = fopen(namebuf, "w"); | |
2606 | if (!rej) | |
2607 | return error("cannot open %s: %s", namebuf, strerror(errno)); | |
2608 | ||
2609 | /* Normal git tools never deal with .rej, so do not pretend | |
2610 | * this is a git patch by saying --git nor give extended | |
2611 | * headers. While at it, maybe please "kompare" that wants | |
2612 | * the trailing TAB and some garbage at the end of line ;-). | |
2613 | */ | |
2614 | fprintf(rej, "diff a/%s b/%s\t(rejected hunks)\n", | |
2615 | patch->new_name, patch->new_name); | |
0e9ee323 | 2616 | for (cnt = 1, frag = patch->fragments; |
82e2765f JH |
2617 | frag; |
2618 | cnt++, frag = frag->next) { | |
2619 | if (!frag->rejected) { | |
2620 | fprintf(stderr, "Hunk #%d applied cleanly.\n", cnt); | |
2621 | continue; | |
57dc397c | 2622 | } |
82e2765f JH |
2623 | fprintf(stderr, "Rejected hunk #%d.\n", cnt); |
2624 | fprintf(rej, "%.*s", frag->size, frag->patch); | |
57dc397c | 2625 | if (frag->patch[frag->size-1] != '\n') |
82e2765f | 2626 | fputc('\n', rej); |
57dc397c | 2627 | } |
82e2765f JH |
2628 | fclose(rej); |
2629 | return -1; | |
5aa7d94c LT |
2630 | } |
2631 | ||
57dc397c | 2632 | static int write_out_results(struct patch *list, int skipped_patch) |
5aa7d94c | 2633 | { |
eed46644 | 2634 | int phase; |
57dc397c JH |
2635 | int errs = 0; |
2636 | struct patch *l; | |
eed46644 | 2637 | |
d854f783 | 2638 | if (!list && !skipped_patch) |
57dc397c | 2639 | return error("No changes"); |
f7b79707 | 2640 | |
eed46644 | 2641 | for (phase = 0; phase < 2; phase++) { |
57dc397c | 2642 | l = list; |
eed46644 | 2643 | while (l) { |
57dc397c JH |
2644 | if (l->rejected) |
2645 | errs = 1; | |
82e2765f | 2646 | else { |
57dc397c | 2647 | write_out_one_result(l, phase); |
82e2765f | 2648 | if (phase == 1 && write_out_one_reject(l)) |
57dc397c JH |
2649 | errs = 1; |
2650 | } | |
eed46644 JH |
2651 | l = l->next; |
2652 | } | |
5aa7d94c | 2653 | } |
57dc397c | 2654 | return errs; |
5aa7d94c LT |
2655 | } |
2656 | ||
021b6e45 | 2657 | static struct lock_file lock_file; |
5aa7d94c | 2658 | |
d854f783 JH |
2659 | static struct excludes { |
2660 | struct excludes *next; | |
2661 | const char *path; | |
2662 | } *excludes; | |
2663 | ||
2664 | static int use_patch(struct patch *p) | |
2665 | { | |
c7c81b3a | 2666 | const char *pathname = p->new_name ? p->new_name : p->old_name; |
d854f783 JH |
2667 | struct excludes *x = excludes; |
2668 | while (x) { | |
2669 | if (fnmatch(x->path, pathname, 0) == 0) | |
2670 | return 0; | |
2671 | x = x->next; | |
2672 | } | |
edf2e370 JH |
2673 | if (0 < prefix_length) { |
2674 | int pathlen = strlen(pathname); | |
2675 | if (pathlen <= prefix_length || | |
2676 | memcmp(prefix, pathname, prefix_length)) | |
2677 | return 0; | |
2678 | } | |
d854f783 JH |
2679 | return 1; |
2680 | } | |
2681 | ||
eac70c4f | 2682 | static void prefix_one(char **name) |
56185f49 | 2683 | { |
eac70c4f JS |
2684 | char *old_name = *name; |
2685 | if (!old_name) | |
2686 | return; | |
2687 | *name = xstrdup(prefix_filename(prefix, prefix_length, *name)); | |
2688 | free(old_name); | |
56185f49 JH |
2689 | } |
2690 | ||
2691 | static void prefix_patches(struct patch *p) | |
2692 | { | |
9987d7c5 | 2693 | if (!prefix || p->is_toplevel_relative) |
56185f49 JH |
2694 | return; |
2695 | for ( ; p; p = p->next) { | |
6c912f5b JH |
2696 | if (p->new_name == p->old_name) { |
2697 | char *prefixed = p->new_name; | |
2698 | prefix_one(&prefixed); | |
2699 | p->new_name = p->old_name = prefixed; | |
2700 | } | |
2701 | else { | |
eac70c4f | 2702 | prefix_one(&p->new_name); |
6c912f5b JH |
2703 | prefix_one(&p->old_name); |
2704 | } | |
56185f49 JH |
2705 | } |
2706 | } | |
2707 | ||
f686d030 | 2708 | static int apply_patch(int fd, const char *filename, int inaccurate_eof) |
c1bb9350 | 2709 | { |
9a76adeb PH |
2710 | size_t offset; |
2711 | struct strbuf buf; | |
19c58fb8 | 2712 | struct patch *list = NULL, **listp = &list; |
d854f783 | 2713 | int skipped_patch = 0; |
c1bb9350 | 2714 | |
9a76adeb | 2715 | strbuf_init(&buf, 0); |
b5767dd6 | 2716 | patch_input_file = filename; |
9a76adeb | 2717 | read_patch_file(&buf, fd); |
c1bb9350 | 2718 | offset = 0; |
9a76adeb | 2719 | while (offset < buf.len) { |
19c58fb8 LT |
2720 | struct patch *patch; |
2721 | int nr; | |
2722 | ||
90321c10 | 2723 | patch = xcalloc(1, sizeof(*patch)); |
3eaa38da | 2724 | patch->inaccurate_eof = inaccurate_eof; |
f94bf440 | 2725 | nr = parse_chunk(buf.buf + offset, buf.len - offset, patch); |
c1bb9350 LT |
2726 | if (nr < 0) |
2727 | break; | |
f686d030 | 2728 | if (apply_in_reverse) |
e5a94313 | 2729 | reverse_patches(patch); |
56185f49 JH |
2730 | if (prefix) |
2731 | prefix_patches(patch); | |
d854f783 JH |
2732 | if (use_patch(patch)) { |
2733 | patch_stats(patch); | |
2734 | *listp = patch; | |
2735 | listp = &patch->next; | |
56185f49 JH |
2736 | } |
2737 | else { | |
d854f783 JH |
2738 | /* perhaps free it a bit better? */ |
2739 | free(patch); | |
2740 | skipped_patch++; | |
2741 | } | |
c1bb9350 | 2742 | offset += nr; |
c1bb9350 | 2743 | } |
19c58fb8 | 2744 | |
81bf96bb | 2745 | if (whitespace_error && (ws_error_action == die_on_ws_error)) |
b5767dd6 JH |
2746 | apply = 0; |
2747 | ||
7da3bf37 JH |
2748 | update_index = check_index && apply; |
2749 | if (update_index && newfd < 0) | |
30ca07a2 JH |
2750 | newfd = hold_locked_index(&lock_file, 1); |
2751 | ||
5aa7d94c LT |
2752 | if (check_index) { |
2753 | if (read_cache() < 0) | |
2754 | die("unable to read index file"); | |
2755 | } | |
2756 | ||
57dc397c JH |
2757 | if ((check || apply) && |
2758 | check_patch_list(list) < 0 && | |
2759 | !apply_with_reject) | |
a577284a LT |
2760 | exit(1); |
2761 | ||
57dc397c JH |
2762 | if (apply && write_out_results(list, skipped_patch)) |
2763 | exit(1); | |
5aa7d94c | 2764 | |
7a988699 JS |
2765 | if (fake_ancestor) |
2766 | build_fake_ancestor(list, fake_ancestor); | |
2cf67f1e | 2767 | |
a577284a LT |
2768 | if (diffstat) |
2769 | stat_patch_list(list); | |
19c58fb8 | 2770 | |
7d8b7c21 JH |
2771 | if (numstat) |
2772 | numstat_patch_list(list); | |
2773 | ||
96c912a4 JH |
2774 | if (summary) |
2775 | summary_patch_list(list); | |
2776 | ||
9a76adeb | 2777 | strbuf_release(&buf); |
c1bb9350 LT |
2778 | return 0; |
2779 | } | |
2780 | ||
2ae1c53b JH |
2781 | static int git_apply_config(const char *var, const char *value) |
2782 | { | |
2783 | if (!strcmp(var, "apply.whitespace")) { | |
9befac47 | 2784 | apply_default_whitespace = xstrdup(value); |
2ae1c53b JH |
2785 | return 0; |
2786 | } | |
2787 | return git_default_config(var, value); | |
2788 | } | |
2789 | ||
2790 | ||
cd554bb1 | 2791 | int cmd_apply(int argc, const char **argv, const char *unused_prefix) |
c1bb9350 LT |
2792 | { |
2793 | int i; | |
4dfdbe10 | 2794 | int read_stdin = 1; |
3eaa38da | 2795 | int inaccurate_eof = 0; |
57dc397c | 2796 | int errs = 0; |
dc7b2436 | 2797 | int is_not_gitdir = 0; |
3eaa38da | 2798 | |
2ae1c53b | 2799 | const char *whitespace_option = NULL; |
c1bb9350 | 2800 | |
dc7b2436 JH |
2801 | prefix = setup_git_directory_gently(&is_not_gitdir); |
2802 | prefix_length = prefix ? strlen(prefix) : 0; | |
700ea479 JH |
2803 | git_config(git_apply_config); |
2804 | if (apply_default_whitespace) | |
2805 | parse_whitespace_option(apply_default_whitespace); | |
67160271 | 2806 | |
c1bb9350 LT |
2807 | for (i = 1; i < argc; i++) { |
2808 | const char *arg = argv[i]; | |
47495887 | 2809 | char *end; |
c1bb9350 LT |
2810 | int fd; |
2811 | ||
2812 | if (!strcmp(arg, "-")) { | |
57dc397c | 2813 | errs |= apply_patch(0, "<stdin>", inaccurate_eof); |
4dfdbe10 | 2814 | read_stdin = 0; |
c1bb9350 LT |
2815 | continue; |
2816 | } | |
cc44c765 | 2817 | if (!prefixcmp(arg, "--exclude=")) { |
d854f783 JH |
2818 | struct excludes *x = xmalloc(sizeof(*x)); |
2819 | x->path = arg + 10; | |
2820 | x->next = excludes; | |
2821 | excludes = x; | |
2822 | continue; | |
2823 | } | |
cc44c765 | 2824 | if (!prefixcmp(arg, "-p")) { |
e36f8b60 | 2825 | p_value = atoi(arg + 2); |
3e8a5db9 | 2826 | p_value_known = 1; |
e36f8b60 DB |
2827 | continue; |
2828 | } | |
cb93c193 JH |
2829 | if (!strcmp(arg, "--no-add")) { |
2830 | no_add = 1; | |
2831 | continue; | |
2832 | } | |
fab2c257 | 2833 | if (!strcmp(arg, "--stat")) { |
a577284a | 2834 | apply = 0; |
fab2c257 LT |
2835 | diffstat = 1; |
2836 | continue; | |
2837 | } | |
0660626c JH |
2838 | if (!strcmp(arg, "--allow-binary-replacement") || |
2839 | !strcmp(arg, "--binary")) { | |
2b6eef94 | 2840 | continue; /* now no-op */ |
011f4274 | 2841 | } |
7d8b7c21 JH |
2842 | if (!strcmp(arg, "--numstat")) { |
2843 | apply = 0; | |
2844 | numstat = 1; | |
2845 | continue; | |
2846 | } | |
96c912a4 JH |
2847 | if (!strcmp(arg, "--summary")) { |
2848 | apply = 0; | |
2849 | summary = 1; | |
2850 | continue; | |
2851 | } | |
a577284a LT |
2852 | if (!strcmp(arg, "--check")) { |
2853 | apply = 0; | |
2854 | check = 1; | |
2855 | continue; | |
2856 | } | |
3cca928d | 2857 | if (!strcmp(arg, "--index")) { |
dc7b2436 JH |
2858 | if (is_not_gitdir) |
2859 | die("--index outside a repository"); | |
3cca928d LT |
2860 | check_index = 1; |
2861 | continue; | |
2862 | } | |
04e4888e | 2863 | if (!strcmp(arg, "--cached")) { |
dc7b2436 JH |
2864 | if (is_not_gitdir) |
2865 | die("--cached outside a repository"); | |
04e4888e JH |
2866 | check_index = 1; |
2867 | cached = 1; | |
2868 | continue; | |
2869 | } | |
aefa4a5b LT |
2870 | if (!strcmp(arg, "--apply")) { |
2871 | apply = 1; | |
2872 | continue; | |
2873 | } | |
7a988699 | 2874 | if (!strcmp(arg, "--build-fake-ancestor")) { |
2cf67f1e | 2875 | apply = 0; |
7a988699 JS |
2876 | if (++i >= argc) |
2877 | die ("need a filename"); | |
2878 | fake_ancestor = argv[i]; | |
2cf67f1e JH |
2879 | continue; |
2880 | } | |
22943f1a JH |
2881 | if (!strcmp(arg, "-z")) { |
2882 | line_termination = 0; | |
2883 | continue; | |
2884 | } | |
cc44c765 | 2885 | if (!prefixcmp(arg, "-C")) { |
47495887 EB |
2886 | p_context = strtoul(arg + 2, &end, 0); |
2887 | if (*end != '\0') | |
2888 | die("unrecognized context count '%s'", arg + 2); | |
2889 | continue; | |
2890 | } | |
cc44c765 | 2891 | if (!prefixcmp(arg, "--whitespace=")) { |
2ae1c53b JH |
2892 | whitespace_option = arg + 13; |
2893 | parse_whitespace_option(arg + 13); | |
2894 | continue; | |
19bfcd5a | 2895 | } |
e5a94313 | 2896 | if (!strcmp(arg, "-R") || !strcmp(arg, "--reverse")) { |
f686d030 | 2897 | apply_in_reverse = 1; |
e5a94313 | 2898 | continue; |
4be60962 JH |
2899 | } |
2900 | if (!strcmp(arg, "--unidiff-zero")) { | |
2901 | unidiff_zero = 1; | |
2902 | continue; | |
e5a94313 | 2903 | } |
57dc397c | 2904 | if (!strcmp(arg, "--reject")) { |
8938045a | 2905 | apply = apply_with_reject = apply_verbosely = 1; |
57dc397c JH |
2906 | continue; |
2907 | } | |
aeabfa07 | 2908 | if (!strcmp(arg, "-v") || !strcmp(arg, "--verbose")) { |
a2bf404e JH |
2909 | apply_verbosely = 1; |
2910 | continue; | |
2911 | } | |
3eaa38da JS |
2912 | if (!strcmp(arg, "--inaccurate-eof")) { |
2913 | inaccurate_eof = 1; | |
2914 | continue; | |
2915 | } | |
edf2e370 JH |
2916 | if (0 < prefix_length) |
2917 | arg = prefix_filename(prefix, prefix_length, arg); | |
2918 | ||
c1bb9350 LT |
2919 | fd = open(arg, O_RDONLY); |
2920 | if (fd < 0) | |
2921 | usage(apply_usage); | |
4dfdbe10 | 2922 | read_stdin = 0; |
f21d6726 | 2923 | set_default_whitespace_mode(whitespace_option); |
57dc397c | 2924 | errs |= apply_patch(fd, arg, inaccurate_eof); |
c1bb9350 LT |
2925 | close(fd); |
2926 | } | |
f21d6726 | 2927 | set_default_whitespace_mode(whitespace_option); |
4dfdbe10 | 2928 | if (read_stdin) |
57dc397c | 2929 | errs |= apply_patch(0, "<stdin>", inaccurate_eof); |
fc96b7c9 JH |
2930 | if (whitespace_error) { |
2931 | if (squelch_whitespace_errors && | |
2932 | squelch_whitespace_errors < whitespace_error) { | |
2933 | int squelched = | |
2934 | whitespace_error - squelch_whitespace_errors; | |
57dc397c JH |
2935 | fprintf(stderr, "warning: squelched %d " |
2936 | "whitespace error%s\n", | |
fc96b7c9 JH |
2937 | squelched, |
2938 | squelched == 1 ? "" : "s"); | |
2939 | } | |
81bf96bb | 2940 | if (ws_error_action == die_on_ws_error) |
c94bf41c | 2941 | die("%d line%s add%s whitespace errors.", |
fc96b7c9 JH |
2942 | whitespace_error, |
2943 | whitespace_error == 1 ? "" : "s", | |
2944 | whitespace_error == 1 ? "s" : ""); | |
c94bf41c | 2945 | if (applied_after_fixing_ws) |
fc96b7c9 | 2946 | fprintf(stderr, "warning: %d line%s applied after" |
c94bf41c JH |
2947 | " fixing whitespace errors.\n", |
2948 | applied_after_fixing_ws, | |
2949 | applied_after_fixing_ws == 1 ? "" : "s"); | |
fc96b7c9 | 2950 | else if (whitespace_error) |
c94bf41c | 2951 | fprintf(stderr, "warning: %d line%s add%s whitespace errors.\n", |
fc96b7c9 JH |
2952 | whitespace_error, |
2953 | whitespace_error == 1 ? "" : "s", | |
2954 | whitespace_error == 1 ? "s" : ""); | |
2955 | } | |
dbd0f7d3 | 2956 | |
7da3bf37 | 2957 | if (update_index) { |
dbd0f7d3 | 2958 | if (write_cache(newfd, active_cache, active_nr) || |
30ca07a2 | 2959 | close(newfd) || commit_locked_index(&lock_file)) |
021b6e45 | 2960 | die("Unable to write new index file"); |
dbd0f7d3 EW |
2961 | } |
2962 | ||
57dc397c | 2963 | return !!errs; |
c1bb9350 | 2964 | } |