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Commit | Line | Data |
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98750588 | 1 | #include "git-compat-util.h" |
b2141fc1 | 2 | #include "config.h" |
7ee24e18 | 3 | #include "environment.h" |
f394e093 | 4 | #include "gettext.h" |
f0a90b4e | 5 | #include "string-list.h" |
85039fb6 | 6 | #include "run-command.h" |
61cfef4c | 7 | #include "commit.h" |
e1f89863 | 8 | #include "tempfile.h" |
b1d78d77 | 9 | #include "trailer.h" |
8966a394 | 10 | #include "list.h" |
9385b5d7 CC |
11 | /* |
12 | * Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org> | |
13 | */ | |
14 | ||
9385b5d7 CC |
15 | struct conf_info { |
16 | char *name; | |
17 | char *key; | |
18 | char *command; | |
c364b7ef | 19 | char *cmd; |
52fc319d PB |
20 | enum trailer_where where; |
21 | enum trailer_if_exists if_exists; | |
22 | enum trailer_if_missing if_missing; | |
9385b5d7 CC |
23 | }; |
24 | ||
25 | static struct conf_info default_conf_info; | |
26 | ||
27 | struct trailer_item { | |
8966a394 | 28 | struct list_head list; |
14624506 JT |
29 | /* |
30 | * If this is not a trailer line, the line is stored in value | |
31 | * (excluding the terminating newline) and token is NULL. | |
32 | */ | |
d65fd424 JT |
33 | char *token; |
34 | char *value; | |
cc71b0de JT |
35 | }; |
36 | ||
37 | struct arg_item { | |
38 | struct list_head list; | |
39 | char *token; | |
40 | char *value; | |
9385b5d7 CC |
41 | struct conf_info conf; |
42 | }; | |
43 | ||
8966a394 | 44 | static LIST_HEAD(conf_head); |
9385b5d7 CC |
45 | |
46 | static char *separators = ":"; | |
47 | ||
e8c352c3 JT |
48 | static int configured; |
49 | ||
85039fb6 CC |
50 | #define TRAILER_ARG_STRING "$ARG" |
51 | ||
14624506 JT |
52 | static const char *git_generated_prefixes[] = { |
53 | "Signed-off-by: ", | |
54 | "(cherry picked from commit ", | |
55 | NULL | |
56 | }; | |
57 | ||
8966a394 JT |
58 | /* Iterate over the elements of the list. */ |
59 | #define list_for_each_dir(pos, head, is_reverse) \ | |
60 | for (pos = is_reverse ? (head)->prev : (head)->next; \ | |
61 | pos != (head); \ | |
62 | pos = is_reverse ? pos->prev : pos->next) | |
63 | ||
52fc319d | 64 | static int after_or_end(enum trailer_where where) |
9385b5d7 CC |
65 | { |
66 | return (where == WHERE_AFTER) || (where == WHERE_END); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Return the length of the string not including any final | |
71 | * punctuation. E.g., the input "Signed-off-by:" would return | |
72 | * 13, stripping the trailing punctuation but retaining | |
73 | * internal punctuation. | |
74 | */ | |
75 | static size_t token_len_without_separator(const char *token, size_t len) | |
76 | { | |
77 | while (len > 0 && !isalnum(token[len - 1])) | |
78 | len--; | |
79 | return len; | |
80 | } | |
81 | ||
cc71b0de | 82 | static int same_token(struct trailer_item *a, struct arg_item *b) |
9385b5d7 | 83 | { |
14624506 JT |
84 | size_t a_len, b_len, min_len; |
85 | ||
86 | if (!a->token) | |
87 | return 0; | |
88 | ||
89 | a_len = token_len_without_separator(a->token, strlen(a->token)); | |
90 | b_len = token_len_without_separator(b->token, strlen(b->token)); | |
91 | min_len = (a_len > b_len) ? b_len : a_len; | |
9385b5d7 CC |
92 | |
93 | return !strncasecmp(a->token, b->token, min_len); | |
94 | } | |
95 | ||
cc71b0de | 96 | static int same_value(struct trailer_item *a, struct arg_item *b) |
9385b5d7 CC |
97 | { |
98 | return !strcasecmp(a->value, b->value); | |
99 | } | |
100 | ||
cc71b0de | 101 | static int same_trailer(struct trailer_item *a, struct arg_item *b) |
9385b5d7 CC |
102 | { |
103 | return same_token(a, b) && same_value(a, b); | |
104 | } | |
4103818d | 105 | |
022349c3 | 106 | static inline int is_blank_line(const char *str) |
2013d850 CC |
107 | { |
108 | const char *s = str; | |
022349c3 | 109 | while (*s && *s != '\n' && isspace(*s)) |
2013d850 | 110 | s++; |
022349c3 | 111 | return !*s || *s == '\n'; |
2013d850 CC |
112 | } |
113 | ||
85039fb6 CC |
114 | static inline void strbuf_replace(struct strbuf *sb, const char *a, const char *b) |
115 | { | |
116 | const char *ptr = strstr(sb->buf, a); | |
117 | if (ptr) | |
118 | strbuf_splice(sb, ptr - sb->buf, strlen(a), b, strlen(b)); | |
119 | } | |
120 | ||
4103818d | 121 | static void free_trailer_item(struct trailer_item *item) |
cc71b0de JT |
122 | { |
123 | free(item->token); | |
124 | free(item->value); | |
125 | free(item); | |
126 | } | |
127 | ||
128 | static void free_arg_item(struct arg_item *item) | |
4103818d CC |
129 | { |
130 | free(item->conf.name); | |
131 | free(item->conf.key); | |
132 | free(item->conf.command); | |
c364b7ef | 133 | free(item->conf.cmd); |
d65fd424 JT |
134 | free(item->token); |
135 | free(item->value); | |
4103818d CC |
136 | free(item); |
137 | } | |
138 | ||
b1d78d77 CC |
139 | static char last_non_space_char(const char *s) |
140 | { | |
141 | int i; | |
142 | for (i = strlen(s) - 1; i >= 0; i--) | |
143 | if (!isspace(s[i])) | |
144 | return s[i]; | |
145 | return '\0'; | |
146 | } | |
147 | ||
d0d2344a | 148 | static void print_tok_val(FILE *outfile, const char *tok, const char *val) |
b1d78d77 | 149 | { |
14624506 JT |
150 | char c; |
151 | ||
152 | if (!tok) { | |
153 | fprintf(outfile, "%s\n", val); | |
154 | return; | |
155 | } | |
156 | ||
157 | c = last_non_space_char(tok); | |
b1d78d77 CC |
158 | if (!c) |
159 | return; | |
160 | if (strchr(separators, c)) | |
d0d2344a | 161 | fprintf(outfile, "%s%s\n", tok, val); |
b1d78d77 | 162 | else |
d0d2344a | 163 | fprintf(outfile, "%s%c %s\n", tok, separators[0], val); |
b1d78d77 CC |
164 | } |
165 | ||
56c493ed JK |
166 | static void print_all(FILE *outfile, struct list_head *head, |
167 | const struct process_trailer_options *opts) | |
b1d78d77 | 168 | { |
8966a394 | 169 | struct list_head *pos; |
b1d78d77 | 170 | struct trailer_item *item; |
8966a394 JT |
171 | list_for_each(pos, head) { |
172 | item = list_entry(pos, struct trailer_item, list); | |
56c493ed JK |
173 | if ((!opts->trim_empty || strlen(item->value) > 0) && |
174 | (!opts->only_trailers || item->token)) | |
d0d2344a | 175 | print_tok_val(outfile, item->token, item->value); |
b1d78d77 CC |
176 | } |
177 | } | |
178 | ||
cc71b0de | 179 | static struct trailer_item *trailer_from_arg(struct arg_item *arg_tok) |
4103818d | 180 | { |
241b5d3e | 181 | struct trailer_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
182 | new_item->token = arg_tok->token; |
183 | new_item->value = arg_tok->value; | |
cc71b0de JT |
184 | arg_tok->token = arg_tok->value = NULL; |
185 | free_arg_item(arg_tok); | |
17651326 | 186 | return new_item; |
4103818d CC |
187 | } |
188 | ||
189 | static void add_arg_to_input_list(struct trailer_item *on_tok, | |
cc71b0de | 190 | struct arg_item *arg_tok) |
8966a394 | 191 | { |
cc71b0de JT |
192 | int aoe = after_or_end(arg_tok->conf.where); |
193 | struct trailer_item *to_add = trailer_from_arg(arg_tok); | |
194 | if (aoe) | |
195 | list_add(&to_add->list, &on_tok->list); | |
8966a394 | 196 | else |
cc71b0de | 197 | list_add_tail(&to_add->list, &on_tok->list); |
4103818d CC |
198 | } |
199 | ||
200 | static int check_if_different(struct trailer_item *in_tok, | |
cc71b0de | 201 | struct arg_item *arg_tok, |
8966a394 JT |
202 | int check_all, |
203 | struct list_head *head) | |
4103818d | 204 | { |
52fc319d | 205 | enum trailer_where where = arg_tok->conf.where; |
8966a394 | 206 | struct list_head *next_head; |
4103818d | 207 | do { |
4103818d CC |
208 | if (same_trailer(in_tok, arg_tok)) |
209 | return 0; | |
210 | /* | |
211 | * if we want to add a trailer after another one, | |
212 | * we have to check those before this one | |
213 | */ | |
8966a394 JT |
214 | next_head = after_or_end(where) ? in_tok->list.prev |
215 | : in_tok->list.next; | |
216 | if (next_head == head) | |
217 | break; | |
218 | in_tok = list_entry(next_head, struct trailer_item, list); | |
4103818d CC |
219 | } while (check_all); |
220 | return 1; | |
221 | } | |
222 | ||
c364b7ef | 223 | static char *apply_command(struct conf_info *conf, const char *arg) |
85039fb6 CC |
224 | { |
225 | struct strbuf cmd = STRBUF_INIT; | |
226 | struct strbuf buf = STRBUF_INIT; | |
b226293b | 227 | struct child_process cp = CHILD_PROCESS_INIT; |
d65fd424 | 228 | char *result; |
85039fb6 | 229 | |
c364b7ef ZH |
230 | if (conf->cmd) { |
231 | strbuf_addstr(&cmd, conf->cmd); | |
232 | strvec_push(&cp.args, cmd.buf); | |
233 | if (arg) | |
234 | strvec_push(&cp.args, arg); | |
235 | } else if (conf->command) { | |
236 | strbuf_addstr(&cmd, conf->command); | |
237 | if (arg) | |
238 | strbuf_replace(&cmd, TRAILER_ARG_STRING, arg); | |
239 | strvec_push(&cp.args, cmd.buf); | |
240 | } | |
29fda24d | 241 | strvec_pushv(&cp.env, (const char **)local_repo_env); |
85039fb6 | 242 | cp.no_stdin = 1; |
85039fb6 CC |
243 | cp.use_shell = 1; |
244 | ||
c5eadcaa | 245 | if (capture_command(&cp, &buf, 1024)) { |
13ad56f8 | 246 | error(_("running trailer command '%s' failed"), cmd.buf); |
85039fb6 CC |
247 | strbuf_release(&buf); |
248 | result = xstrdup(""); | |
c5eadcaa JK |
249 | } else { |
250 | strbuf_trim(&buf); | |
85039fb6 | 251 | result = strbuf_detach(&buf, NULL); |
c5eadcaa | 252 | } |
85039fb6 CC |
253 | |
254 | strbuf_release(&cmd); | |
255 | return result; | |
256 | } | |
257 | ||
cc71b0de | 258 | static void apply_item_command(struct trailer_item *in_tok, struct arg_item *arg_tok) |
85039fb6 | 259 | { |
c364b7ef | 260 | if (arg_tok->conf.command || arg_tok->conf.cmd) { |
85039fb6 CC |
261 | const char *arg; |
262 | if (arg_tok->value && arg_tok->value[0]) { | |
263 | arg = arg_tok->value; | |
264 | } else { | |
265 | if (in_tok && in_tok->value) | |
266 | arg = xstrdup(in_tok->value); | |
267 | else | |
268 | arg = xstrdup(""); | |
269 | } | |
c364b7ef | 270 | arg_tok->value = apply_command(&arg_tok->conf, arg); |
85039fb6 CC |
271 | free((char *)arg); |
272 | } | |
273 | } | |
274 | ||
4103818d | 275 | static void apply_arg_if_exists(struct trailer_item *in_tok, |
cc71b0de | 276 | struct arg_item *arg_tok, |
4103818d | 277 | struct trailer_item *on_tok, |
8966a394 | 278 | struct list_head *head) |
4103818d CC |
279 | { |
280 | switch (arg_tok->conf.if_exists) { | |
281 | case EXISTS_DO_NOTHING: | |
cc71b0de | 282 | free_arg_item(arg_tok); |
4103818d CC |
283 | break; |
284 | case EXISTS_REPLACE: | |
85039fb6 | 285 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
286 | add_arg_to_input_list(on_tok, arg_tok); |
287 | list_del(&in_tok->list); | |
4103818d CC |
288 | free_trailer_item(in_tok); |
289 | break; | |
290 | case EXISTS_ADD: | |
85039fb6 | 291 | apply_item_command(in_tok, arg_tok); |
8966a394 | 292 | add_arg_to_input_list(on_tok, arg_tok); |
4103818d CC |
293 | break; |
294 | case EXISTS_ADD_IF_DIFFERENT: | |
85039fb6 | 295 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
296 | if (check_if_different(in_tok, arg_tok, 1, head)) |
297 | add_arg_to_input_list(on_tok, arg_tok); | |
4103818d | 298 | else |
cc71b0de | 299 | free_arg_item(arg_tok); |
4103818d CC |
300 | break; |
301 | case EXISTS_ADD_IF_DIFFERENT_NEIGHBOR: | |
85039fb6 | 302 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
303 | if (check_if_different(on_tok, arg_tok, 0, head)) |
304 | add_arg_to_input_list(on_tok, arg_tok); | |
4103818d | 305 | else |
cc71b0de | 306 | free_arg_item(arg_tok); |
4103818d | 307 | break; |
0ea5292e | 308 | default: |
033abf97 | 309 | BUG("trailer.c: unhandled value %d", |
0ea5292e | 310 | arg_tok->conf.if_exists); |
4103818d CC |
311 | } |
312 | } | |
313 | ||
8966a394 | 314 | static void apply_arg_if_missing(struct list_head *head, |
cc71b0de | 315 | struct arg_item *arg_tok) |
4103818d | 316 | { |
52fc319d | 317 | enum trailer_where where; |
cc71b0de | 318 | struct trailer_item *to_add; |
4103818d CC |
319 | |
320 | switch (arg_tok->conf.if_missing) { | |
321 | case MISSING_DO_NOTHING: | |
cc71b0de | 322 | free_arg_item(arg_tok); |
4103818d CC |
323 | break; |
324 | case MISSING_ADD: | |
325 | where = arg_tok->conf.where; | |
85039fb6 | 326 | apply_item_command(NULL, arg_tok); |
cc71b0de | 327 | to_add = trailer_from_arg(arg_tok); |
8966a394 | 328 | if (after_or_end(where)) |
cc71b0de | 329 | list_add_tail(&to_add->list, head); |
8966a394 | 330 | else |
cc71b0de | 331 | list_add(&to_add->list, head); |
0ea5292e PB |
332 | break; |
333 | default: | |
033abf97 | 334 | BUG("trailer.c: unhandled value %d", |
0ea5292e | 335 | arg_tok->conf.if_missing); |
4103818d CC |
336 | } |
337 | } | |
338 | ||
8966a394 | 339 | static int find_same_and_apply_arg(struct list_head *head, |
cc71b0de | 340 | struct arg_item *arg_tok) |
4103818d | 341 | { |
8966a394 | 342 | struct list_head *pos; |
4103818d CC |
343 | struct trailer_item *in_tok; |
344 | struct trailer_item *on_tok; | |
4103818d | 345 | |
52fc319d | 346 | enum trailer_where where = arg_tok->conf.where; |
4103818d CC |
347 | int middle = (where == WHERE_AFTER) || (where == WHERE_BEFORE); |
348 | int backwards = after_or_end(where); | |
8966a394 | 349 | struct trailer_item *start_tok; |
4103818d | 350 | |
8966a394 JT |
351 | if (list_empty(head)) |
352 | return 0; | |
4103818d | 353 | |
8966a394 JT |
354 | start_tok = list_entry(backwards ? head->prev : head->next, |
355 | struct trailer_item, | |
356 | list); | |
357 | ||
358 | list_for_each_dir(pos, head, backwards) { | |
359 | in_tok = list_entry(pos, struct trailer_item, list); | |
4103818d CC |
360 | if (!same_token(in_tok, arg_tok)) |
361 | continue; | |
362 | on_tok = middle ? in_tok : start_tok; | |
8966a394 | 363 | apply_arg_if_exists(in_tok, arg_tok, on_tok, head); |
4103818d CC |
364 | return 1; |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
8966a394 JT |
369 | static void process_trailers_lists(struct list_head *head, |
370 | struct list_head *arg_head) | |
4103818d | 371 | { |
8966a394 | 372 | struct list_head *pos, *p; |
cc71b0de | 373 | struct arg_item *arg_tok; |
4103818d | 374 | |
8966a394 | 375 | list_for_each_safe(pos, p, arg_head) { |
4103818d | 376 | int applied = 0; |
cc71b0de | 377 | arg_tok = list_entry(pos, struct arg_item, list); |
4103818d | 378 | |
8966a394 | 379 | list_del(pos); |
4103818d | 380 | |
8966a394 | 381 | applied = find_same_and_apply_arg(head, arg_tok); |
4103818d CC |
382 | |
383 | if (!applied) | |
8966a394 | 384 | apply_arg_if_missing(head, arg_tok); |
4103818d CC |
385 | } |
386 | } | |
46a0613f | 387 | |
52fc319d | 388 | int trailer_set_where(enum trailer_where *item, const char *value) |
46a0613f | 389 | { |
0ea5292e PB |
390 | if (!value) |
391 | *item = WHERE_DEFAULT; | |
392 | else if (!strcasecmp("after", value)) | |
52fc319d | 393 | *item = WHERE_AFTER; |
46a0613f | 394 | else if (!strcasecmp("before", value)) |
52fc319d | 395 | *item = WHERE_BEFORE; |
46a0613f | 396 | else if (!strcasecmp("end", value)) |
52fc319d | 397 | *item = WHERE_END; |
46a0613f | 398 | else if (!strcasecmp("start", value)) |
52fc319d | 399 | *item = WHERE_START; |
46a0613f CC |
400 | else |
401 | return -1; | |
402 | return 0; | |
403 | } | |
404 | ||
52fc319d | 405 | int trailer_set_if_exists(enum trailer_if_exists *item, const char *value) |
46a0613f | 406 | { |
0ea5292e PB |
407 | if (!value) |
408 | *item = EXISTS_DEFAULT; | |
409 | else if (!strcasecmp("addIfDifferent", value)) | |
52fc319d | 410 | *item = EXISTS_ADD_IF_DIFFERENT; |
46a0613f | 411 | else if (!strcasecmp("addIfDifferentNeighbor", value)) |
52fc319d | 412 | *item = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR; |
46a0613f | 413 | else if (!strcasecmp("add", value)) |
52fc319d | 414 | *item = EXISTS_ADD; |
46a0613f | 415 | else if (!strcasecmp("replace", value)) |
52fc319d | 416 | *item = EXISTS_REPLACE; |
46a0613f | 417 | else if (!strcasecmp("doNothing", value)) |
52fc319d | 418 | *item = EXISTS_DO_NOTHING; |
46a0613f CC |
419 | else |
420 | return -1; | |
421 | return 0; | |
422 | } | |
423 | ||
52fc319d | 424 | int trailer_set_if_missing(enum trailer_if_missing *item, const char *value) |
46a0613f | 425 | { |
0ea5292e PB |
426 | if (!value) |
427 | *item = MISSING_DEFAULT; | |
428 | else if (!strcasecmp("doNothing", value)) | |
52fc319d | 429 | *item = MISSING_DO_NOTHING; |
46a0613f | 430 | else if (!strcasecmp("add", value)) |
52fc319d | 431 | *item = MISSING_ADD; |
46a0613f CC |
432 | else |
433 | return -1; | |
434 | return 0; | |
435 | } | |
436 | ||
d65fd424 | 437 | static void duplicate_conf(struct conf_info *dst, const struct conf_info *src) |
46a0613f CC |
438 | { |
439 | *dst = *src; | |
13092a91 JH |
440 | dst->name = xstrdup_or_null(src->name); |
441 | dst->key = xstrdup_or_null(src->key); | |
442 | dst->command = xstrdup_or_null(src->command); | |
c364b7ef | 443 | dst->cmd = xstrdup_or_null(src->cmd); |
46a0613f CC |
444 | } |
445 | ||
cc71b0de | 446 | static struct arg_item *get_conf_item(const char *name) |
46a0613f | 447 | { |
8966a394 | 448 | struct list_head *pos; |
cc71b0de | 449 | struct arg_item *item; |
46a0613f CC |
450 | |
451 | /* Look up item with same name */ | |
8966a394 | 452 | list_for_each(pos, &conf_head) { |
cc71b0de | 453 | item = list_entry(pos, struct arg_item, list); |
46a0613f CC |
454 | if (!strcasecmp(item->conf.name, name)) |
455 | return item; | |
456 | } | |
457 | ||
458 | /* Item does not already exists, create it */ | |
ca56dadb | 459 | CALLOC_ARRAY(item, 1); |
46a0613f CC |
460 | duplicate_conf(&item->conf, &default_conf_info); |
461 | item->conf.name = xstrdup(name); | |
462 | ||
8966a394 | 463 | list_add_tail(&item->list, &conf_head); |
46a0613f CC |
464 | |
465 | return item; | |
466 | } | |
467 | ||
c364b7ef ZH |
468 | enum trailer_info_type { TRAILER_KEY, TRAILER_COMMAND, TRAILER_CMD, |
469 | TRAILER_WHERE, TRAILER_IF_EXISTS, TRAILER_IF_MISSING }; | |
46a0613f CC |
470 | |
471 | static struct { | |
472 | const char *name; | |
473 | enum trailer_info_type type; | |
474 | } trailer_config_items[] = { | |
475 | { "key", TRAILER_KEY }, | |
476 | { "command", TRAILER_COMMAND }, | |
c364b7ef | 477 | { "cmd", TRAILER_CMD }, |
46a0613f CC |
478 | { "where", TRAILER_WHERE }, |
479 | { "ifexists", TRAILER_IF_EXISTS }, | |
480 | { "ifmissing", TRAILER_IF_MISSING } | |
481 | }; | |
482 | ||
783a86c1 | 483 | static int git_trailer_default_config(const char *conf_key, const char *value, |
a4e7e317 | 484 | const struct config_context *ctx UNUSED, |
5cf88fd8 | 485 | void *cb UNUSED) |
46a0613f CC |
486 | { |
487 | const char *trailer_item, *variable_name; | |
488 | ||
489 | if (!skip_prefix(conf_key, "trailer.", &trailer_item)) | |
490 | return 0; | |
491 | ||
492 | variable_name = strrchr(trailer_item, '.'); | |
493 | if (!variable_name) { | |
494 | if (!strcmp(trailer_item, "where")) { | |
52fc319d PB |
495 | if (trailer_set_where(&default_conf_info.where, |
496 | value) < 0) | |
46a0613f CC |
497 | warning(_("unknown value '%s' for key '%s'"), |
498 | value, conf_key); | |
499 | } else if (!strcmp(trailer_item, "ifexists")) { | |
52fc319d PB |
500 | if (trailer_set_if_exists(&default_conf_info.if_exists, |
501 | value) < 0) | |
46a0613f CC |
502 | warning(_("unknown value '%s' for key '%s'"), |
503 | value, conf_key); | |
504 | } else if (!strcmp(trailer_item, "ifmissing")) { | |
52fc319d PB |
505 | if (trailer_set_if_missing(&default_conf_info.if_missing, |
506 | value) < 0) | |
46a0613f CC |
507 | warning(_("unknown value '%s' for key '%s'"), |
508 | value, conf_key); | |
509 | } else if (!strcmp(trailer_item, "separators")) { | |
ba176db5 JK |
510 | if (!value) |
511 | return config_error_nonbool(conf_key); | |
46a0613f CC |
512 | separators = xstrdup(value); |
513 | } | |
514 | } | |
515 | return 0; | |
516 | } | |
517 | ||
783a86c1 | 518 | static int git_trailer_config(const char *conf_key, const char *value, |
a4e7e317 | 519 | const struct config_context *ctx UNUSED, |
5cf88fd8 | 520 | void *cb UNUSED) |
46a0613f CC |
521 | { |
522 | const char *trailer_item, *variable_name; | |
cc71b0de | 523 | struct arg_item *item; |
46a0613f CC |
524 | struct conf_info *conf; |
525 | char *name = NULL; | |
526 | enum trailer_info_type type; | |
527 | int i; | |
528 | ||
529 | if (!skip_prefix(conf_key, "trailer.", &trailer_item)) | |
530 | return 0; | |
531 | ||
532 | variable_name = strrchr(trailer_item, '.'); | |
533 | if (!variable_name) | |
534 | return 0; | |
535 | ||
536 | variable_name++; | |
537 | for (i = 0; i < ARRAY_SIZE(trailer_config_items); i++) { | |
538 | if (strcmp(trailer_config_items[i].name, variable_name)) | |
539 | continue; | |
540 | name = xstrndup(trailer_item, variable_name - trailer_item - 1); | |
541 | type = trailer_config_items[i].type; | |
542 | break; | |
543 | } | |
544 | ||
545 | if (!name) | |
546 | return 0; | |
547 | ||
548 | item = get_conf_item(name); | |
549 | conf = &item->conf; | |
550 | free(name); | |
551 | ||
552 | switch (type) { | |
553 | case TRAILER_KEY: | |
554 | if (conf->key) | |
555 | warning(_("more than one %s"), conf_key); | |
1b274c98 JK |
556 | if (!value) |
557 | return config_error_nonbool(conf_key); | |
46a0613f CC |
558 | conf->key = xstrdup(value); |
559 | break; | |
560 | case TRAILER_COMMAND: | |
561 | if (conf->command) | |
562 | warning(_("more than one %s"), conf_key); | |
1b274c98 JK |
563 | if (!value) |
564 | return config_error_nonbool(conf_key); | |
46a0613f CC |
565 | conf->command = xstrdup(value); |
566 | break; | |
c364b7ef ZH |
567 | case TRAILER_CMD: |
568 | if (conf->cmd) | |
569 | warning(_("more than one %s"), conf_key); | |
1b274c98 JK |
570 | if (!value) |
571 | return config_error_nonbool(conf_key); | |
c364b7ef ZH |
572 | conf->cmd = xstrdup(value); |
573 | break; | |
46a0613f | 574 | case TRAILER_WHERE: |
52fc319d | 575 | if (trailer_set_where(&conf->where, value)) |
46a0613f CC |
576 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
577 | break; | |
578 | case TRAILER_IF_EXISTS: | |
52fc319d | 579 | if (trailer_set_if_exists(&conf->if_exists, value)) |
46a0613f CC |
580 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
581 | break; | |
582 | case TRAILER_IF_MISSING: | |
52fc319d | 583 | if (trailer_set_if_missing(&conf->if_missing, value)) |
46a0613f CC |
584 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
585 | break; | |
586 | default: | |
033abf97 | 587 | BUG("trailer.c: unhandled type %d", type); |
46a0613f CC |
588 | } |
589 | return 0; | |
590 | } | |
f0a90b4e | 591 | |
e8c352c3 JT |
592 | static void ensure_configured(void) |
593 | { | |
594 | if (configured) | |
595 | return; | |
596 | ||
597 | /* Default config must be setup first */ | |
52fc319d PB |
598 | default_conf_info.where = WHERE_END; |
599 | default_conf_info.if_exists = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR; | |
600 | default_conf_info.if_missing = MISSING_ADD; | |
e8c352c3 JT |
601 | git_config(git_trailer_default_config, NULL); |
602 | git_config(git_trailer_config, NULL); | |
603 | configured = 1; | |
604 | } | |
605 | ||
cc71b0de | 606 | static const char *token_from_item(struct arg_item *item, char *tok) |
f0a90b4e CC |
607 | { |
608 | if (item->conf.key) | |
609 | return item->conf.key; | |
610 | if (tok) | |
611 | return tok; | |
612 | return item->conf.name; | |
613 | } | |
614 | ||
0d2db00e | 615 | static int token_matches_item(const char *tok, struct arg_item *item, size_t tok_len) |
f0a90b4e CC |
616 | { |
617 | if (!strncasecmp(tok, item->conf.name, tok_len)) | |
618 | return 1; | |
619 | return item->conf.key ? !strncasecmp(tok, item->conf.key, tok_len) : 0; | |
620 | } | |
621 | ||
fdbf4510 | 622 | /* |
e4319562 JT |
623 | * If the given line is of the form |
624 | * "<token><optional whitespace><separator>..." or "<separator>...", return the | |
625 | * location of the separator. Otherwise, return -1. The optional whitespace | |
626 | * is allowed there primarily to allow things like "Bug #43" where <token> is | |
627 | * "Bug" and <separator> is "#". | |
628 | * | |
629 | * The separator-starts-line case (in which this function returns 0) is | |
630 | * distinguished from the non-well-formed-line case (in which this function | |
631 | * returns -1) because some callers of this function need such a distinction. | |
fdbf4510 | 632 | */ |
0d2db00e | 633 | static ssize_t find_separator(const char *line, const char *separators) |
f0a90b4e | 634 | { |
e4319562 JT |
635 | int whitespace_found = 0; |
636 | const char *c; | |
637 | for (c = line; *c; c++) { | |
638 | if (strchr(separators, *c)) | |
639 | return c - line; | |
640 | if (!whitespace_found && (isalnum(*c) || *c == '-')) | |
641 | continue; | |
642 | if (c != line && (*c == ' ' || *c == '\t')) { | |
643 | whitespace_found = 1; | |
644 | continue; | |
645 | } | |
646 | break; | |
647 | } | |
648 | return -1; | |
fdbf4510 | 649 | } |
f0a90b4e | 650 | |
fdbf4510 JT |
651 | /* |
652 | * Obtain the token, value, and conf from the given trailer. | |
653 | * | |
654 | * separator_pos must not be 0, since the token cannot be an empty string. | |
655 | * | |
656 | * If separator_pos is -1, interpret the whole trailer as a token. | |
657 | */ | |
658 | static void parse_trailer(struct strbuf *tok, struct strbuf *val, | |
659 | const struct conf_info **conf, const char *trailer, | |
0d2db00e | 660 | ssize_t separator_pos) |
f0a90b4e | 661 | { |
cc71b0de | 662 | struct arg_item *item; |
0d2db00e | 663 | size_t tok_len; |
63ab3f34 | 664 | struct list_head *pos; |
f0a90b4e | 665 | |
fdbf4510 JT |
666 | if (separator_pos != -1) { |
667 | strbuf_add(tok, trailer, separator_pos); | |
f0a90b4e | 668 | strbuf_trim(tok); |
fdbf4510 | 669 | strbuf_addstr(val, trailer + separator_pos + 1); |
f0a90b4e CC |
670 | strbuf_trim(val); |
671 | } else { | |
672 | strbuf_addstr(tok, trailer); | |
673 | strbuf_trim(tok); | |
674 | } | |
f0a90b4e CC |
675 | |
676 | /* Lookup if the token matches something in the config */ | |
63ab3f34 | 677 | tok_len = token_len_without_separator(tok->buf, tok->len); |
cc71b0de JT |
678 | if (conf) |
679 | *conf = &default_conf_info; | |
8966a394 | 680 | list_for_each(pos, &conf_head) { |
cc71b0de | 681 | item = list_entry(pos, struct arg_item, list); |
63ab3f34 JT |
682 | if (token_matches_item(tok->buf, item, tok_len)) { |
683 | char *tok_buf = strbuf_detach(tok, NULL); | |
cc71b0de JT |
684 | if (conf) |
685 | *conf = &item->conf; | |
63ab3f34 JT |
686 | strbuf_addstr(tok, token_from_item(item, tok_buf)); |
687 | free(tok_buf); | |
688 | break; | |
689 | } | |
f0a90b4e | 690 | } |
f0a90b4e | 691 | } |
f0a90b4e | 692 | |
60ef86a1 JT |
693 | static struct trailer_item *add_trailer_item(struct list_head *head, char *tok, |
694 | char *val) | |
f0a90b4e | 695 | { |
241b5d3e | 696 | struct trailer_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
697 | new_item->token = tok; |
698 | new_item->value = val; | |
699 | list_add_tail(&new_item->list, head); | |
700 | return new_item; | |
f0a90b4e CC |
701 | } |
702 | ||
cc71b0de | 703 | static void add_arg_item(struct list_head *arg_head, char *tok, char *val, |
0ea5292e PB |
704 | const struct conf_info *conf, |
705 | const struct new_trailer_item *new_trailer_item) | |
f0a90b4e | 706 | { |
241b5d3e | 707 | struct arg_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
708 | new_item->token = tok; |
709 | new_item->value = val; | |
710 | duplicate_conf(&new_item->conf, conf); | |
0ea5292e PB |
711 | if (new_trailer_item) { |
712 | if (new_trailer_item->where != WHERE_DEFAULT) | |
17651326 | 713 | new_item->conf.where = new_trailer_item->where; |
0ea5292e | 714 | if (new_trailer_item->if_exists != EXISTS_DEFAULT) |
17651326 | 715 | new_item->conf.if_exists = new_trailer_item->if_exists; |
0ea5292e | 716 | if (new_trailer_item->if_missing != MISSING_DEFAULT) |
17651326 | 717 | new_item->conf.if_missing = new_trailer_item->if_missing; |
0ea5292e | 718 | } |
17651326 | 719 | list_add_tail(&new_item->list, arg_head); |
f0a90b4e CC |
720 | } |
721 | ||
94430d03 | 722 | static void parse_trailers_from_config(struct list_head *config_head) |
f0a90b4e | 723 | { |
cc71b0de | 724 | struct arg_item *item; |
8966a394 | 725 | struct list_head *pos; |
85039fb6 | 726 | |
cc71b0de | 727 | /* Add an arg item for each configured trailer with a command */ |
8966a394 | 728 | list_for_each(pos, &conf_head) { |
cc71b0de | 729 | item = list_entry(pos, struct arg_item, list); |
63ab3f34 | 730 | if (item->conf.command) |
94430d03 | 731 | add_arg_item(config_head, |
cc71b0de JT |
732 | xstrdup(token_from_item(item, NULL)), |
733 | xstrdup(""), | |
0ea5292e | 734 | &item->conf, NULL); |
85039fb6 | 735 | } |
94430d03 LA |
736 | } |
737 | ||
738 | static void parse_trailers_from_command_line_args(struct list_head *arg_head, | |
739 | struct list_head *new_trailer_head) | |
740 | { | |
741 | struct strbuf tok = STRBUF_INIT; | |
742 | struct strbuf val = STRBUF_INIT; | |
743 | const struct conf_info *conf; | |
744 | struct list_head *pos; | |
745 | ||
746 | /* | |
747 | * In command-line arguments, '=' is accepted (in addition to the | |
748 | * separators that are defined). | |
749 | */ | |
750 | char *cl_separators = xstrfmt("=%s", separators); | |
f0a90b4e | 751 | |
cc71b0de | 752 | /* Add an arg item for each trailer on the command line */ |
51166b87 PB |
753 | list_for_each(pos, new_trailer_head) { |
754 | struct new_trailer_item *tr = | |
755 | list_entry(pos, struct new_trailer_item, list); | |
0d2db00e | 756 | ssize_t separator_pos = find_separator(tr->text, cl_separators); |
51166b87 | 757 | |
fdbf4510 JT |
758 | if (separator_pos == 0) { |
759 | struct strbuf sb = STRBUF_INIT; | |
51166b87 | 760 | strbuf_addstr(&sb, tr->text); |
fdbf4510 JT |
761 | strbuf_trim(&sb); |
762 | error(_("empty trailer token in trailer '%.*s'"), | |
763 | (int) sb.len, sb.buf); | |
764 | strbuf_release(&sb); | |
765 | } else { | |
51166b87 | 766 | parse_trailer(&tok, &val, &conf, tr->text, |
fdbf4510 | 767 | separator_pos); |
cc71b0de JT |
768 | add_arg_item(arg_head, |
769 | strbuf_detach(&tok, NULL), | |
770 | strbuf_detach(&val, NULL), | |
0ea5292e | 771 | conf, tr); |
fdbf4510 | 772 | } |
f0a90b4e CC |
773 | } |
774 | ||
fdbf4510 | 775 | free(cl_separators); |
f0a90b4e | 776 | } |
2013d850 | 777 | |
022349c3 | 778 | static void read_input_file(struct strbuf *sb, const char *file) |
2013d850 | 779 | { |
2013d850 | 780 | if (file) { |
022349c3 | 781 | if (strbuf_read_file(sb, file, 0) < 0) |
2013d850 CC |
782 | die_errno(_("could not read input file '%s'"), file); |
783 | } else { | |
022349c3 | 784 | if (strbuf_read(sb, fileno(stdin), 0) < 0) |
2013d850 CC |
785 | die_errno(_("could not read from stdin")); |
786 | } | |
022349c3 | 787 | } |
2013d850 | 788 | |
022349c3 JT |
789 | static const char *next_line(const char *str) |
790 | { | |
791 | const char *nl = strchrnul(str, '\n'); | |
792 | return nl + !!*nl; | |
793 | } | |
2013d850 | 794 | |
022349c3 JT |
795 | /* |
796 | * Return the position of the start of the last line. If len is 0, return -1. | |
797 | */ | |
0d2db00e | 798 | static ssize_t last_line(const char *buf, size_t len) |
022349c3 | 799 | { |
0d2db00e | 800 | ssize_t i; |
022349c3 JT |
801 | if (len == 0) |
802 | return -1; | |
803 | if (len == 1) | |
804 | return 0; | |
805 | /* | |
806 | * Skip the last character (in addition to the null terminator), | |
807 | * because if the last character is a newline, it is considered as part | |
808 | * of the last line anyway. | |
809 | */ | |
810 | i = len - 2; | |
2013d850 | 811 | |
022349c3 JT |
812 | for (; i >= 0; i--) { |
813 | if (buf[i] == '\n') | |
814 | return i + 1; | |
815 | } | |
816 | return 0; | |
2013d850 CC |
817 | } |
818 | ||
819 | /* | |
022349c3 JT |
820 | * Return the position of the start of the patch or the length of str if there |
821 | * is no patch in the message. | |
2013d850 | 822 | */ |
0d2db00e | 823 | static size_t find_patch_start(const char *str) |
2013d850 | 824 | { |
022349c3 | 825 | const char *s; |
2013d850 | 826 | |
022349c3 | 827 | for (s = str; *s; s = next_line(s)) { |
c188668e JK |
828 | const char *v; |
829 | ||
830 | if (skip_prefix(s, "---", &v) && isspace(*v)) | |
022349c3 | 831 | return s - str; |
2013d850 CC |
832 | } |
833 | ||
022349c3 | 834 | return s - str; |
2013d850 CC |
835 | } |
836 | ||
837 | /* | |
022349c3 JT |
838 | * Return the position of the first trailer line or len if there are no |
839 | * trailers. | |
2013d850 | 840 | */ |
0d2db00e | 841 | static size_t find_trailer_start(const char *buf, size_t len) |
2013d850 | 842 | { |
022349c3 | 843 | const char *s; |
0d2db00e JK |
844 | ssize_t end_of_title, l; |
845 | int only_spaces = 1; | |
14624506 | 846 | int recognized_prefix = 0, trailer_lines = 0, non_trailer_lines = 0; |
60ef86a1 JT |
847 | /* |
848 | * Number of possible continuation lines encountered. This will be | |
849 | * reset to 0 if we encounter a trailer (since those lines are to be | |
850 | * considered continuations of that trailer), and added to | |
851 | * non_trailer_lines if we encounter a non-trailer (since those lines | |
852 | * are to be considered non-trailers). | |
853 | */ | |
854 | int possible_continuation_lines = 0; | |
5c99995d CC |
855 | |
856 | /* The first paragraph is the title and cannot be trailers */ | |
022349c3 JT |
857 | for (s = buf; s < buf + len; s = next_line(s)) { |
858 | if (s[0] == comment_line_char) | |
5c99995d | 859 | continue; |
022349c3 | 860 | if (is_blank_line(s)) |
5c99995d CC |
861 | break; |
862 | } | |
022349c3 | 863 | end_of_title = s - buf; |
2013d850 CC |
864 | |
865 | /* | |
14624506 JT |
866 | * Get the start of the trailers by looking starting from the end for a |
867 | * blank line before a set of non-blank lines that (i) are all | |
868 | * trailers, or (ii) contains at least one Git-generated trailer and | |
869 | * consists of at least 25% trailers. | |
2013d850 | 870 | */ |
022349c3 JT |
871 | for (l = last_line(buf, len); |
872 | l >= end_of_title; | |
873 | l = last_line(buf, l)) { | |
874 | const char *bol = buf + l; | |
14624506 | 875 | const char **p; |
0d2db00e | 876 | ssize_t separator_pos; |
14624506 | 877 | |
022349c3 | 878 | if (bol[0] == comment_line_char) { |
60ef86a1 JT |
879 | non_trailer_lines += possible_continuation_lines; |
880 | possible_continuation_lines = 0; | |
2013d850 | 881 | continue; |
60ef86a1 | 882 | } |
022349c3 | 883 | if (is_blank_line(bol)) { |
2013d850 CC |
884 | if (only_spaces) |
885 | continue; | |
60ef86a1 | 886 | non_trailer_lines += possible_continuation_lines; |
14624506 JT |
887 | if (recognized_prefix && |
888 | trailer_lines * 3 >= non_trailer_lines) | |
022349c3 JT |
889 | return next_line(bol) - buf; |
890 | else if (trailer_lines && !non_trailer_lines) | |
891 | return next_line(bol) - buf; | |
892 | return len; | |
2013d850 | 893 | } |
14624506 JT |
894 | only_spaces = 0; |
895 | ||
896 | for (p = git_generated_prefixes; *p; p++) { | |
022349c3 | 897 | if (starts_with(bol, *p)) { |
14624506 | 898 | trailer_lines++; |
60ef86a1 | 899 | possible_continuation_lines = 0; |
14624506 JT |
900 | recognized_prefix = 1; |
901 | goto continue_outer_loop; | |
902 | } | |
2013d850 | 903 | } |
14624506 | 904 | |
022349c3 JT |
905 | separator_pos = find_separator(bol, separators); |
906 | if (separator_pos >= 1 && !isspace(bol[0])) { | |
14624506 JT |
907 | struct list_head *pos; |
908 | ||
909 | trailer_lines++; | |
60ef86a1 | 910 | possible_continuation_lines = 0; |
14624506 JT |
911 | if (recognized_prefix) |
912 | continue; | |
913 | list_for_each(pos, &conf_head) { | |
914 | struct arg_item *item; | |
915 | item = list_entry(pos, struct arg_item, list); | |
022349c3 | 916 | if (token_matches_item(bol, item, |
14624506 JT |
917 | separator_pos)) { |
918 | recognized_prefix = 1; | |
919 | break; | |
920 | } | |
921 | } | |
022349c3 | 922 | } else if (isspace(bol[0])) |
60ef86a1 JT |
923 | possible_continuation_lines++; |
924 | else { | |
14624506 | 925 | non_trailer_lines++; |
60ef86a1 JT |
926 | non_trailer_lines += possible_continuation_lines; |
927 | possible_continuation_lines = 0; | |
2013d850 | 928 | } |
14624506 JT |
929 | continue_outer_loop: |
930 | ; | |
2013d850 CC |
931 | } |
932 | ||
022349c3 | 933 | return len; |
61cfef4c CC |
934 | } |
935 | ||
022349c3 | 936 | /* Return the position of the end of the trailers. */ |
0d2db00e | 937 | static size_t find_trailer_end(const char *buf, size_t len) |
2013d850 | 938 | { |
022349c3 | 939 | return len - ignore_non_trailer(buf, len); |
2013d850 CC |
940 | } |
941 | ||
022349c3 | 942 | static int ends_with_blank_line(const char *buf, size_t len) |
2013d850 | 943 | { |
0d2db00e | 944 | ssize_t ll = last_line(buf, len); |
022349c3 JT |
945 | if (ll < 0) |
946 | return 0; | |
947 | return is_blank_line(buf + ll); | |
2013d850 CC |
948 | } |
949 | ||
00002396 JK |
950 | static void unfold_value(struct strbuf *val) |
951 | { | |
952 | struct strbuf out = STRBUF_INIT; | |
953 | size_t i; | |
954 | ||
955 | strbuf_grow(&out, val->len); | |
956 | i = 0; | |
957 | while (i < val->len) { | |
958 | char c = val->buf[i++]; | |
959 | if (c == '\n') { | |
960 | /* Collapse continuation down to a single space. */ | |
961 | while (i < val->len && isspace(val->buf[i])) | |
962 | i++; | |
963 | strbuf_addch(&out, ' '); | |
964 | } else { | |
965 | strbuf_addch(&out, c); | |
966 | } | |
967 | } | |
968 | ||
969 | /* Empty lines may have left us with whitespace cruft at the edges */ | |
970 | strbuf_trim(&out); | |
971 | ||
972 | /* output goes back to val as if we modified it in-place */ | |
973 | strbuf_swap(&out, val); | |
974 | strbuf_release(&out); | |
975 | } | |
976 | ||
c2a8edf9 LA |
977 | /* |
978 | * Parse trailers in "str", populating the trailer info and "head" | |
979 | * linked list structure. | |
980 | */ | |
981 | static void parse_trailers(struct trailer_info *info, | |
982 | const char *str, | |
983 | struct list_head *head, | |
984 | const struct process_trailer_options *opts) | |
2013d850 | 985 | { |
63ab3f34 JT |
986 | struct strbuf tok = STRBUF_INIT; |
987 | struct strbuf val = STRBUF_INIT; | |
a3b636e2 | 988 | size_t i; |
2013d850 | 989 | |
c2a8edf9 | 990 | trailer_info_get(info, str, opts); |
2013d850 | 991 | |
c2a8edf9 | 992 | for (i = 0; i < info->trailer_nr; i++) { |
fdbf4510 | 993 | int separator_pos; |
c2a8edf9 | 994 | char *trailer = info->trailers[i]; |
e8c352c3 | 995 | if (trailer[0] == comment_line_char) |
60ef86a1 | 996 | continue; |
e8c352c3 | 997 | separator_pos = find_separator(trailer, separators); |
fdbf4510 | 998 | if (separator_pos >= 1) { |
e8c352c3 | 999 | parse_trailer(&tok, &val, NULL, trailer, |
fdbf4510 | 1000 | separator_pos); |
00002396 JK |
1001 | if (opts->unfold) |
1002 | unfold_value(&val); | |
e8c352c3 JT |
1003 | add_trailer_item(head, |
1004 | strbuf_detach(&tok, NULL), | |
1005 | strbuf_detach(&val, NULL)); | |
56c493ed | 1006 | } else if (!opts->only_trailers) { |
e8c352c3 | 1007 | strbuf_addstr(&val, trailer); |
14624506 JT |
1008 | strbuf_strip_suffix(&val, "\n"); |
1009 | add_trailer_item(head, | |
1010 | NULL, | |
1011 | strbuf_detach(&val, NULL)); | |
2887103b | 1012 | } |
2013d850 | 1013 | } |
2013d850 | 1014 | } |
b1d78d77 | 1015 | |
8966a394 | 1016 | static void free_all(struct list_head *head) |
b1d78d77 | 1017 | { |
8966a394 JT |
1018 | struct list_head *pos, *p; |
1019 | list_for_each_safe(pos, p, head) { | |
1020 | list_del(pos); | |
1021 | free_trailer_item(list_entry(pos, struct trailer_item, list)); | |
b1d78d77 CC |
1022 | } |
1023 | } | |
1024 | ||
076aa2cb | 1025 | static struct tempfile *trailers_tempfile; |
e1f89863 TK |
1026 | |
1027 | static FILE *create_in_place_tempfile(const char *file) | |
1028 | { | |
1029 | struct stat st; | |
31c2c7a0 | 1030 | struct strbuf filename_template = STRBUF_INIT; |
e1f89863 TK |
1031 | const char *tail; |
1032 | FILE *outfile; | |
1033 | ||
1034 | if (stat(file, &st)) | |
1035 | die_errno(_("could not stat %s"), file); | |
1036 | if (!S_ISREG(st.st_mode)) | |
1037 | die(_("file %s is not a regular file"), file); | |
1038 | if (!(st.st_mode & S_IWUSR)) | |
1039 | die(_("file %s is not writable by user"), file); | |
1040 | ||
1041 | /* Create temporary file in the same directory as the original */ | |
1042 | tail = strrchr(file, '/'); | |
afe8a907 | 1043 | if (tail) |
31c2c7a0 BW |
1044 | strbuf_add(&filename_template, file, tail - file + 1); |
1045 | strbuf_addstr(&filename_template, "git-interpret-trailers-XXXXXX"); | |
e1f89863 | 1046 | |
31c2c7a0 BW |
1047 | trailers_tempfile = xmks_tempfile_m(filename_template.buf, st.st_mode); |
1048 | strbuf_release(&filename_template); | |
076aa2cb | 1049 | outfile = fdopen_tempfile(trailers_tempfile, "w"); |
e1f89863 TK |
1050 | if (!outfile) |
1051 | die_errno(_("could not open temporary file")); | |
1052 | ||
1053 | return outfile; | |
1054 | } | |
1055 | ||
8abc8980 JK |
1056 | void process_trailers(const char *file, |
1057 | const struct process_trailer_options *opts, | |
51166b87 | 1058 | struct list_head *new_trailer_head) |
b1d78d77 | 1059 | { |
8966a394 | 1060 | LIST_HEAD(head); |
022349c3 | 1061 | struct strbuf sb = STRBUF_INIT; |
c2a8edf9 | 1062 | struct trailer_info info; |
0d2db00e | 1063 | size_t trailer_end; |
d0d2344a | 1064 | FILE *outfile = stdout; |
b1d78d77 | 1065 | |
e8c352c3 | 1066 | ensure_configured(); |
b1d78d77 | 1067 | |
022349c3 | 1068 | read_input_file(&sb, file); |
b1d78d77 | 1069 | |
8abc8980 | 1070 | if (opts->in_place) |
e1f89863 TK |
1071 | outfile = create_in_place_tempfile(file); |
1072 | ||
c2a8edf9 LA |
1073 | parse_trailers(&info, sb.buf, &head, opts); |
1074 | trailer_end = info.trailer_end - sb.buf; | |
1075 | ||
b1d78d77 | 1076 | /* Print the lines before the trailers */ |
c2a8edf9 LA |
1077 | if (!opts->only_trailers) |
1078 | fwrite(sb.buf, 1, info.trailer_start - sb.buf, outfile); | |
1079 | ||
1080 | if (!opts->only_trailers && !info.blank_line_before_trailer) | |
1081 | fprintf(outfile, "\n"); | |
1082 | ||
b1d78d77 | 1083 | |
fdbdb64f | 1084 | if (!opts->only_input) { |
94430d03 | 1085 | LIST_HEAD(config_head); |
fdbdb64f | 1086 | LIST_HEAD(arg_head); |
94430d03 LA |
1087 | parse_trailers_from_config(&config_head); |
1088 | parse_trailers_from_command_line_args(&arg_head, new_trailer_head); | |
1089 | list_splice(&config_head, &arg_head); | |
fdbdb64f JK |
1090 | process_trailers_lists(&head, &arg_head); |
1091 | } | |
b1d78d77 | 1092 | |
56c493ed | 1093 | print_all(outfile, &head, opts); |
b1d78d77 | 1094 | |
8966a394 | 1095 | free_all(&head); |
c2a8edf9 | 1096 | trailer_info_release(&info); |
b1d78d77 CC |
1097 | |
1098 | /* Print the lines after the trailers as is */ | |
56c493ed JK |
1099 | if (!opts->only_trailers) |
1100 | fwrite(sb.buf + trailer_end, 1, sb.len - trailer_end, outfile); | |
b1d78d77 | 1101 | |
8abc8980 | 1102 | if (opts->in_place) |
e1f89863 TK |
1103 | if (rename_tempfile(&trailers_tempfile, file)) |
1104 | die_errno(_("could not rename temporary file to %s"), file); | |
1105 | ||
022349c3 | 1106 | strbuf_release(&sb); |
b1d78d77 | 1107 | } |
e8c352c3 | 1108 | |
00a21f5c JK |
1109 | void trailer_info_get(struct trailer_info *info, const char *str, |
1110 | const struct process_trailer_options *opts) | |
e8c352c3 JT |
1111 | { |
1112 | int patch_start, trailer_end, trailer_start; | |
1113 | struct strbuf **trailer_lines, **ptr; | |
1114 | char **trailer_strings = NULL; | |
1115 | size_t nr = 0, alloc = 0; | |
1116 | char **last = NULL; | |
1117 | ||
1118 | ensure_configured(); | |
1119 | ||
1688c9a4 JK |
1120 | if (opts->no_divider) |
1121 | patch_start = strlen(str); | |
1122 | else | |
1123 | patch_start = find_patch_start(str); | |
1124 | ||
e8c352c3 JT |
1125 | trailer_end = find_trailer_end(str, patch_start); |
1126 | trailer_start = find_trailer_start(str, trailer_end); | |
1127 | ||
1128 | trailer_lines = strbuf_split_buf(str + trailer_start, | |
1129 | trailer_end - trailer_start, | |
1130 | '\n', | |
1131 | 0); | |
1132 | for (ptr = trailer_lines; *ptr; ptr++) { | |
1133 | if (last && isspace((*ptr)->buf[0])) { | |
1134 | struct strbuf sb = STRBUF_INIT; | |
1135 | strbuf_attach(&sb, *last, strlen(*last), strlen(*last)); | |
1136 | strbuf_addbuf(&sb, *ptr); | |
1137 | *last = strbuf_detach(&sb, NULL); | |
1138 | continue; | |
1139 | } | |
1140 | ALLOC_GROW(trailer_strings, nr + 1, alloc); | |
1141 | trailer_strings[nr] = strbuf_detach(*ptr, NULL); | |
1142 | last = find_separator(trailer_strings[nr], separators) >= 1 | |
1143 | ? &trailer_strings[nr] | |
1144 | : NULL; | |
1145 | nr++; | |
1146 | } | |
1147 | strbuf_list_free(trailer_lines); | |
1148 | ||
1149 | info->blank_line_before_trailer = ends_with_blank_line(str, | |
1150 | trailer_start); | |
1151 | info->trailer_start = str + trailer_start; | |
1152 | info->trailer_end = str + trailer_end; | |
1153 | info->trailers = trailer_strings; | |
1154 | info->trailer_nr = nr; | |
1155 | } | |
1156 | ||
1157 | void trailer_info_release(struct trailer_info *info) | |
1158 | { | |
a3b636e2 | 1159 | size_t i; |
e8c352c3 JT |
1160 | for (i = 0; i < info->trailer_nr; i++) |
1161 | free(info->trailers[i]); | |
1162 | free(info->trailers); | |
1163 | } | |
a388b10f JK |
1164 | |
1165 | static void format_trailer_info(struct strbuf *out, | |
1166 | const struct trailer_info *info, | |
1167 | const struct process_trailer_options *opts) | |
1168 | { | |
0b691d86 | 1169 | size_t origlen = out->len; |
a3b636e2 | 1170 | size_t i; |
58311c66 JK |
1171 | |
1172 | /* If we want the whole block untouched, we can take the fast path. */ | |
8b966a05 | 1173 | if (!opts->only_trailers && !opts->unfold && !opts->filter && |
058761f1 ÆAB |
1174 | !opts->separator && !opts->key_only && !opts->value_only && |
1175 | !opts->key_value_separator) { | |
58311c66 JK |
1176 | strbuf_add(out, info->trailer_start, |
1177 | info->trailer_end - info->trailer_start); | |
1178 | return; | |
1179 | } | |
1180 | ||
1181 | for (i = 0; i < info->trailer_nr; i++) { | |
1182 | char *trailer = info->trailers[i]; | |
0d2db00e | 1183 | ssize_t separator_pos = find_separator(trailer, separators); |
58311c66 JK |
1184 | |
1185 | if (separator_pos >= 1) { | |
1186 | struct strbuf tok = STRBUF_INIT; | |
1187 | struct strbuf val = STRBUF_INIT; | |
1188 | ||
1189 | parse_trailer(&tok, &val, NULL, trailer, separator_pos); | |
250bea0c AW |
1190 | if (!opts->filter || opts->filter(&tok, opts->filter_data)) { |
1191 | if (opts->unfold) | |
1192 | unfold_value(&val); | |
0b691d86 AW |
1193 | |
1194 | if (opts->separator && out->len != origlen) | |
1195 | strbuf_addbuf(out, opts->separator); | |
d9b936db | 1196 | if (!opts->value_only) |
9d87d5ae | 1197 | strbuf_addbuf(out, &tok); |
058761f1 ÆAB |
1198 | if (!opts->key_only && !opts->value_only) { |
1199 | if (opts->key_value_separator) | |
1200 | strbuf_addbuf(out, opts->key_value_separator); | |
1201 | else | |
1202 | strbuf_addstr(out, ": "); | |
1203 | } | |
9d87d5ae ÆAB |
1204 | if (!opts->key_only) |
1205 | strbuf_addbuf(out, &val); | |
0b691d86 AW |
1206 | if (!opts->separator) |
1207 | strbuf_addch(out, '\n'); | |
250bea0c | 1208 | } |
58311c66 JK |
1209 | strbuf_release(&tok); |
1210 | strbuf_release(&val); | |
1211 | ||
1212 | } else if (!opts->only_trailers) { | |
0b691d86 AW |
1213 | if (opts->separator && out->len != origlen) { |
1214 | strbuf_addbuf(out, opts->separator); | |
1215 | } | |
58311c66 | 1216 | strbuf_addstr(out, trailer); |
0b691d86 AW |
1217 | if (opts->separator) { |
1218 | strbuf_rtrim(out); | |
1219 | } | |
58311c66 JK |
1220 | } |
1221 | } | |
1222 | ||
a388b10f JK |
1223 | } |
1224 | ||
1225 | void format_trailers_from_commit(struct strbuf *out, const char *msg, | |
1226 | const struct process_trailer_options *opts) | |
1227 | { | |
1228 | struct trailer_info info; | |
1229 | ||
00a21f5c | 1230 | trailer_info_get(&info, msg, opts); |
a388b10f JK |
1231 | format_trailer_info(out, &info, opts); |
1232 | trailer_info_release(&info); | |
1233 | } | |
f0939a0e JK |
1234 | |
1235 | void trailer_iterator_init(struct trailer_iterator *iter, const char *msg) | |
1236 | { | |
1237 | struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT; | |
1238 | strbuf_init(&iter->key, 0); | |
1239 | strbuf_init(&iter->val, 0); | |
1240 | opts.no_divider = 1; | |
13211ae2 LA |
1241 | trailer_info_get(&iter->internal.info, msg, &opts); |
1242 | iter->internal.cur = 0; | |
f0939a0e JK |
1243 | } |
1244 | ||
1245 | int trailer_iterator_advance(struct trailer_iterator *iter) | |
1246 | { | |
13211ae2 LA |
1247 | while (iter->internal.cur < iter->internal.info.trailer_nr) { |
1248 | char *trailer = iter->internal.info.trailers[iter->internal.cur++]; | |
f0939a0e JK |
1249 | int separator_pos = find_separator(trailer, separators); |
1250 | ||
1251 | if (separator_pos < 1) | |
1252 | continue; /* not a real trailer */ | |
1253 | ||
1254 | strbuf_reset(&iter->key); | |
1255 | strbuf_reset(&iter->val); | |
1256 | parse_trailer(&iter->key, &iter->val, NULL, | |
1257 | trailer, separator_pos); | |
1258 | unfold_value(&iter->val); | |
1259 | return 1; | |
1260 | } | |
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | void trailer_iterator_release(struct trailer_iterator *iter) | |
1265 | { | |
13211ae2 | 1266 | trailer_info_release(&iter->internal.info); |
f0939a0e JK |
1267 | strbuf_release(&iter->val); |
1268 | strbuf_release(&iter->key); | |
1269 | } |