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Commit | Line | Data |
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98750588 | 1 | #include "git-compat-util.h" |
36bf1958 | 2 | #include "alloc.h" |
b2141fc1 | 3 | #include "config.h" |
7ee24e18 | 4 | #include "environment.h" |
f394e093 | 5 | #include "gettext.h" |
f0a90b4e | 6 | #include "string-list.h" |
85039fb6 | 7 | #include "run-command.h" |
61cfef4c | 8 | #include "commit.h" |
e1f89863 | 9 | #include "tempfile.h" |
b1d78d77 | 10 | #include "trailer.h" |
8966a394 | 11 | #include "list.h" |
9385b5d7 CC |
12 | /* |
13 | * Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org> | |
14 | */ | |
15 | ||
9385b5d7 CC |
16 | struct conf_info { |
17 | char *name; | |
18 | char *key; | |
19 | char *command; | |
c364b7ef | 20 | char *cmd; |
52fc319d PB |
21 | enum trailer_where where; |
22 | enum trailer_if_exists if_exists; | |
23 | enum trailer_if_missing if_missing; | |
9385b5d7 CC |
24 | }; |
25 | ||
26 | static struct conf_info default_conf_info; | |
27 | ||
28 | struct trailer_item { | |
8966a394 | 29 | struct list_head list; |
14624506 JT |
30 | /* |
31 | * If this is not a trailer line, the line is stored in value | |
32 | * (excluding the terminating newline) and token is NULL. | |
33 | */ | |
d65fd424 JT |
34 | char *token; |
35 | char *value; | |
cc71b0de JT |
36 | }; |
37 | ||
38 | struct arg_item { | |
39 | struct list_head list; | |
40 | char *token; | |
41 | char *value; | |
9385b5d7 CC |
42 | struct conf_info conf; |
43 | }; | |
44 | ||
8966a394 | 45 | static LIST_HEAD(conf_head); |
9385b5d7 CC |
46 | |
47 | static char *separators = ":"; | |
48 | ||
e8c352c3 JT |
49 | static int configured; |
50 | ||
85039fb6 CC |
51 | #define TRAILER_ARG_STRING "$ARG" |
52 | ||
14624506 JT |
53 | static const char *git_generated_prefixes[] = { |
54 | "Signed-off-by: ", | |
55 | "(cherry picked from commit ", | |
56 | NULL | |
57 | }; | |
58 | ||
8966a394 JT |
59 | /* Iterate over the elements of the list. */ |
60 | #define list_for_each_dir(pos, head, is_reverse) \ | |
61 | for (pos = is_reverse ? (head)->prev : (head)->next; \ | |
62 | pos != (head); \ | |
63 | pos = is_reverse ? pos->prev : pos->next) | |
64 | ||
52fc319d | 65 | static int after_or_end(enum trailer_where where) |
9385b5d7 CC |
66 | { |
67 | return (where == WHERE_AFTER) || (where == WHERE_END); | |
68 | } | |
69 | ||
70 | /* | |
71 | * Return the length of the string not including any final | |
72 | * punctuation. E.g., the input "Signed-off-by:" would return | |
73 | * 13, stripping the trailing punctuation but retaining | |
74 | * internal punctuation. | |
75 | */ | |
76 | static size_t token_len_without_separator(const char *token, size_t len) | |
77 | { | |
78 | while (len > 0 && !isalnum(token[len - 1])) | |
79 | len--; | |
80 | return len; | |
81 | } | |
82 | ||
cc71b0de | 83 | static int same_token(struct trailer_item *a, struct arg_item *b) |
9385b5d7 | 84 | { |
14624506 JT |
85 | size_t a_len, b_len, min_len; |
86 | ||
87 | if (!a->token) | |
88 | return 0; | |
89 | ||
90 | a_len = token_len_without_separator(a->token, strlen(a->token)); | |
91 | b_len = token_len_without_separator(b->token, strlen(b->token)); | |
92 | min_len = (a_len > b_len) ? b_len : a_len; | |
9385b5d7 CC |
93 | |
94 | return !strncasecmp(a->token, b->token, min_len); | |
95 | } | |
96 | ||
cc71b0de | 97 | static int same_value(struct trailer_item *a, struct arg_item *b) |
9385b5d7 CC |
98 | { |
99 | return !strcasecmp(a->value, b->value); | |
100 | } | |
101 | ||
cc71b0de | 102 | static int same_trailer(struct trailer_item *a, struct arg_item *b) |
9385b5d7 CC |
103 | { |
104 | return same_token(a, b) && same_value(a, b); | |
105 | } | |
4103818d | 106 | |
022349c3 | 107 | static inline int is_blank_line(const char *str) |
2013d850 CC |
108 | { |
109 | const char *s = str; | |
022349c3 | 110 | while (*s && *s != '\n' && isspace(*s)) |
2013d850 | 111 | s++; |
022349c3 | 112 | return !*s || *s == '\n'; |
2013d850 CC |
113 | } |
114 | ||
85039fb6 CC |
115 | static inline void strbuf_replace(struct strbuf *sb, const char *a, const char *b) |
116 | { | |
117 | const char *ptr = strstr(sb->buf, a); | |
118 | if (ptr) | |
119 | strbuf_splice(sb, ptr - sb->buf, strlen(a), b, strlen(b)); | |
120 | } | |
121 | ||
4103818d | 122 | static void free_trailer_item(struct trailer_item *item) |
cc71b0de JT |
123 | { |
124 | free(item->token); | |
125 | free(item->value); | |
126 | free(item); | |
127 | } | |
128 | ||
129 | static void free_arg_item(struct arg_item *item) | |
4103818d CC |
130 | { |
131 | free(item->conf.name); | |
132 | free(item->conf.key); | |
133 | free(item->conf.command); | |
c364b7ef | 134 | free(item->conf.cmd); |
d65fd424 JT |
135 | free(item->token); |
136 | free(item->value); | |
4103818d CC |
137 | free(item); |
138 | } | |
139 | ||
b1d78d77 CC |
140 | static char last_non_space_char(const char *s) |
141 | { | |
142 | int i; | |
143 | for (i = strlen(s) - 1; i >= 0; i--) | |
144 | if (!isspace(s[i])) | |
145 | return s[i]; | |
146 | return '\0'; | |
147 | } | |
148 | ||
d0d2344a | 149 | static void print_tok_val(FILE *outfile, const char *tok, const char *val) |
b1d78d77 | 150 | { |
14624506 JT |
151 | char c; |
152 | ||
153 | if (!tok) { | |
154 | fprintf(outfile, "%s\n", val); | |
155 | return; | |
156 | } | |
157 | ||
158 | c = last_non_space_char(tok); | |
b1d78d77 CC |
159 | if (!c) |
160 | return; | |
161 | if (strchr(separators, c)) | |
d0d2344a | 162 | fprintf(outfile, "%s%s\n", tok, val); |
b1d78d77 | 163 | else |
d0d2344a | 164 | fprintf(outfile, "%s%c %s\n", tok, separators[0], val); |
b1d78d77 CC |
165 | } |
166 | ||
56c493ed JK |
167 | static void print_all(FILE *outfile, struct list_head *head, |
168 | const struct process_trailer_options *opts) | |
b1d78d77 | 169 | { |
8966a394 | 170 | struct list_head *pos; |
b1d78d77 | 171 | struct trailer_item *item; |
8966a394 JT |
172 | list_for_each(pos, head) { |
173 | item = list_entry(pos, struct trailer_item, list); | |
56c493ed JK |
174 | if ((!opts->trim_empty || strlen(item->value) > 0) && |
175 | (!opts->only_trailers || item->token)) | |
d0d2344a | 176 | print_tok_val(outfile, item->token, item->value); |
b1d78d77 CC |
177 | } |
178 | } | |
179 | ||
cc71b0de | 180 | static struct trailer_item *trailer_from_arg(struct arg_item *arg_tok) |
4103818d | 181 | { |
241b5d3e | 182 | struct trailer_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
183 | new_item->token = arg_tok->token; |
184 | new_item->value = arg_tok->value; | |
cc71b0de JT |
185 | arg_tok->token = arg_tok->value = NULL; |
186 | free_arg_item(arg_tok); | |
17651326 | 187 | return new_item; |
4103818d CC |
188 | } |
189 | ||
190 | static void add_arg_to_input_list(struct trailer_item *on_tok, | |
cc71b0de | 191 | struct arg_item *arg_tok) |
8966a394 | 192 | { |
cc71b0de JT |
193 | int aoe = after_or_end(arg_tok->conf.where); |
194 | struct trailer_item *to_add = trailer_from_arg(arg_tok); | |
195 | if (aoe) | |
196 | list_add(&to_add->list, &on_tok->list); | |
8966a394 | 197 | else |
cc71b0de | 198 | list_add_tail(&to_add->list, &on_tok->list); |
4103818d CC |
199 | } |
200 | ||
201 | static int check_if_different(struct trailer_item *in_tok, | |
cc71b0de | 202 | struct arg_item *arg_tok, |
8966a394 JT |
203 | int check_all, |
204 | struct list_head *head) | |
4103818d | 205 | { |
52fc319d | 206 | enum trailer_where where = arg_tok->conf.where; |
8966a394 | 207 | struct list_head *next_head; |
4103818d | 208 | do { |
4103818d CC |
209 | if (same_trailer(in_tok, arg_tok)) |
210 | return 0; | |
211 | /* | |
212 | * if we want to add a trailer after another one, | |
213 | * we have to check those before this one | |
214 | */ | |
8966a394 JT |
215 | next_head = after_or_end(where) ? in_tok->list.prev |
216 | : in_tok->list.next; | |
217 | if (next_head == head) | |
218 | break; | |
219 | in_tok = list_entry(next_head, struct trailer_item, list); | |
4103818d CC |
220 | } while (check_all); |
221 | return 1; | |
222 | } | |
223 | ||
c364b7ef | 224 | static char *apply_command(struct conf_info *conf, const char *arg) |
85039fb6 CC |
225 | { |
226 | struct strbuf cmd = STRBUF_INIT; | |
227 | struct strbuf buf = STRBUF_INIT; | |
b226293b | 228 | struct child_process cp = CHILD_PROCESS_INIT; |
d65fd424 | 229 | char *result; |
85039fb6 | 230 | |
c364b7ef ZH |
231 | if (conf->cmd) { |
232 | strbuf_addstr(&cmd, conf->cmd); | |
233 | strvec_push(&cp.args, cmd.buf); | |
234 | if (arg) | |
235 | strvec_push(&cp.args, arg); | |
236 | } else if (conf->command) { | |
237 | strbuf_addstr(&cmd, conf->command); | |
238 | if (arg) | |
239 | strbuf_replace(&cmd, TRAILER_ARG_STRING, arg); | |
240 | strvec_push(&cp.args, cmd.buf); | |
241 | } | |
29fda24d | 242 | strvec_pushv(&cp.env, (const char **)local_repo_env); |
85039fb6 | 243 | cp.no_stdin = 1; |
85039fb6 CC |
244 | cp.use_shell = 1; |
245 | ||
c5eadcaa | 246 | if (capture_command(&cp, &buf, 1024)) { |
13ad56f8 | 247 | error(_("running trailer command '%s' failed"), cmd.buf); |
85039fb6 CC |
248 | strbuf_release(&buf); |
249 | result = xstrdup(""); | |
c5eadcaa JK |
250 | } else { |
251 | strbuf_trim(&buf); | |
85039fb6 | 252 | result = strbuf_detach(&buf, NULL); |
c5eadcaa | 253 | } |
85039fb6 CC |
254 | |
255 | strbuf_release(&cmd); | |
256 | return result; | |
257 | } | |
258 | ||
cc71b0de | 259 | static void apply_item_command(struct trailer_item *in_tok, struct arg_item *arg_tok) |
85039fb6 | 260 | { |
c364b7ef | 261 | if (arg_tok->conf.command || arg_tok->conf.cmd) { |
85039fb6 CC |
262 | const char *arg; |
263 | if (arg_tok->value && arg_tok->value[0]) { | |
264 | arg = arg_tok->value; | |
265 | } else { | |
266 | if (in_tok && in_tok->value) | |
267 | arg = xstrdup(in_tok->value); | |
268 | else | |
269 | arg = xstrdup(""); | |
270 | } | |
c364b7ef | 271 | arg_tok->value = apply_command(&arg_tok->conf, arg); |
85039fb6 CC |
272 | free((char *)arg); |
273 | } | |
274 | } | |
275 | ||
4103818d | 276 | static void apply_arg_if_exists(struct trailer_item *in_tok, |
cc71b0de | 277 | struct arg_item *arg_tok, |
4103818d | 278 | struct trailer_item *on_tok, |
8966a394 | 279 | struct list_head *head) |
4103818d CC |
280 | { |
281 | switch (arg_tok->conf.if_exists) { | |
282 | case EXISTS_DO_NOTHING: | |
cc71b0de | 283 | free_arg_item(arg_tok); |
4103818d CC |
284 | break; |
285 | case EXISTS_REPLACE: | |
85039fb6 | 286 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
287 | add_arg_to_input_list(on_tok, arg_tok); |
288 | list_del(&in_tok->list); | |
4103818d CC |
289 | free_trailer_item(in_tok); |
290 | break; | |
291 | case EXISTS_ADD: | |
85039fb6 | 292 | apply_item_command(in_tok, arg_tok); |
8966a394 | 293 | add_arg_to_input_list(on_tok, arg_tok); |
4103818d CC |
294 | break; |
295 | case EXISTS_ADD_IF_DIFFERENT: | |
85039fb6 | 296 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
297 | if (check_if_different(in_tok, arg_tok, 1, head)) |
298 | add_arg_to_input_list(on_tok, arg_tok); | |
4103818d | 299 | else |
cc71b0de | 300 | free_arg_item(arg_tok); |
4103818d CC |
301 | break; |
302 | case EXISTS_ADD_IF_DIFFERENT_NEIGHBOR: | |
85039fb6 | 303 | apply_item_command(in_tok, arg_tok); |
8966a394 JT |
304 | if (check_if_different(on_tok, arg_tok, 0, head)) |
305 | add_arg_to_input_list(on_tok, arg_tok); | |
4103818d | 306 | else |
cc71b0de | 307 | free_arg_item(arg_tok); |
4103818d | 308 | break; |
0ea5292e | 309 | default: |
033abf97 | 310 | BUG("trailer.c: unhandled value %d", |
0ea5292e | 311 | arg_tok->conf.if_exists); |
4103818d CC |
312 | } |
313 | } | |
314 | ||
8966a394 | 315 | static void apply_arg_if_missing(struct list_head *head, |
cc71b0de | 316 | struct arg_item *arg_tok) |
4103818d | 317 | { |
52fc319d | 318 | enum trailer_where where; |
cc71b0de | 319 | struct trailer_item *to_add; |
4103818d CC |
320 | |
321 | switch (arg_tok->conf.if_missing) { | |
322 | case MISSING_DO_NOTHING: | |
cc71b0de | 323 | free_arg_item(arg_tok); |
4103818d CC |
324 | break; |
325 | case MISSING_ADD: | |
326 | where = arg_tok->conf.where; | |
85039fb6 | 327 | apply_item_command(NULL, arg_tok); |
cc71b0de | 328 | to_add = trailer_from_arg(arg_tok); |
8966a394 | 329 | if (after_or_end(where)) |
cc71b0de | 330 | list_add_tail(&to_add->list, head); |
8966a394 | 331 | else |
cc71b0de | 332 | list_add(&to_add->list, head); |
0ea5292e PB |
333 | break; |
334 | default: | |
033abf97 | 335 | BUG("trailer.c: unhandled value %d", |
0ea5292e | 336 | arg_tok->conf.if_missing); |
4103818d CC |
337 | } |
338 | } | |
339 | ||
8966a394 | 340 | static int find_same_and_apply_arg(struct list_head *head, |
cc71b0de | 341 | struct arg_item *arg_tok) |
4103818d | 342 | { |
8966a394 | 343 | struct list_head *pos; |
4103818d CC |
344 | struct trailer_item *in_tok; |
345 | struct trailer_item *on_tok; | |
4103818d | 346 | |
52fc319d | 347 | enum trailer_where where = arg_tok->conf.where; |
4103818d CC |
348 | int middle = (where == WHERE_AFTER) || (where == WHERE_BEFORE); |
349 | int backwards = after_or_end(where); | |
8966a394 | 350 | struct trailer_item *start_tok; |
4103818d | 351 | |
8966a394 JT |
352 | if (list_empty(head)) |
353 | return 0; | |
4103818d | 354 | |
8966a394 JT |
355 | start_tok = list_entry(backwards ? head->prev : head->next, |
356 | struct trailer_item, | |
357 | list); | |
358 | ||
359 | list_for_each_dir(pos, head, backwards) { | |
360 | in_tok = list_entry(pos, struct trailer_item, list); | |
4103818d CC |
361 | if (!same_token(in_tok, arg_tok)) |
362 | continue; | |
363 | on_tok = middle ? in_tok : start_tok; | |
8966a394 | 364 | apply_arg_if_exists(in_tok, arg_tok, on_tok, head); |
4103818d CC |
365 | return 1; |
366 | } | |
367 | return 0; | |
368 | } | |
369 | ||
8966a394 JT |
370 | static void process_trailers_lists(struct list_head *head, |
371 | struct list_head *arg_head) | |
4103818d | 372 | { |
8966a394 | 373 | struct list_head *pos, *p; |
cc71b0de | 374 | struct arg_item *arg_tok; |
4103818d | 375 | |
8966a394 | 376 | list_for_each_safe(pos, p, arg_head) { |
4103818d | 377 | int applied = 0; |
cc71b0de | 378 | arg_tok = list_entry(pos, struct arg_item, list); |
4103818d | 379 | |
8966a394 | 380 | list_del(pos); |
4103818d | 381 | |
8966a394 | 382 | applied = find_same_and_apply_arg(head, arg_tok); |
4103818d CC |
383 | |
384 | if (!applied) | |
8966a394 | 385 | apply_arg_if_missing(head, arg_tok); |
4103818d CC |
386 | } |
387 | } | |
46a0613f | 388 | |
52fc319d | 389 | int trailer_set_where(enum trailer_where *item, const char *value) |
46a0613f | 390 | { |
0ea5292e PB |
391 | if (!value) |
392 | *item = WHERE_DEFAULT; | |
393 | else if (!strcasecmp("after", value)) | |
52fc319d | 394 | *item = WHERE_AFTER; |
46a0613f | 395 | else if (!strcasecmp("before", value)) |
52fc319d | 396 | *item = WHERE_BEFORE; |
46a0613f | 397 | else if (!strcasecmp("end", value)) |
52fc319d | 398 | *item = WHERE_END; |
46a0613f | 399 | else if (!strcasecmp("start", value)) |
52fc319d | 400 | *item = WHERE_START; |
46a0613f CC |
401 | else |
402 | return -1; | |
403 | return 0; | |
404 | } | |
405 | ||
52fc319d | 406 | int trailer_set_if_exists(enum trailer_if_exists *item, const char *value) |
46a0613f | 407 | { |
0ea5292e PB |
408 | if (!value) |
409 | *item = EXISTS_DEFAULT; | |
410 | else if (!strcasecmp("addIfDifferent", value)) | |
52fc319d | 411 | *item = EXISTS_ADD_IF_DIFFERENT; |
46a0613f | 412 | else if (!strcasecmp("addIfDifferentNeighbor", value)) |
52fc319d | 413 | *item = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR; |
46a0613f | 414 | else if (!strcasecmp("add", value)) |
52fc319d | 415 | *item = EXISTS_ADD; |
46a0613f | 416 | else if (!strcasecmp("replace", value)) |
52fc319d | 417 | *item = EXISTS_REPLACE; |
46a0613f | 418 | else if (!strcasecmp("doNothing", value)) |
52fc319d | 419 | *item = EXISTS_DO_NOTHING; |
46a0613f CC |
420 | else |
421 | return -1; | |
422 | return 0; | |
423 | } | |
424 | ||
52fc319d | 425 | int trailer_set_if_missing(enum trailer_if_missing *item, const char *value) |
46a0613f | 426 | { |
0ea5292e PB |
427 | if (!value) |
428 | *item = MISSING_DEFAULT; | |
429 | else if (!strcasecmp("doNothing", value)) | |
52fc319d | 430 | *item = MISSING_DO_NOTHING; |
46a0613f | 431 | else if (!strcasecmp("add", value)) |
52fc319d | 432 | *item = MISSING_ADD; |
46a0613f CC |
433 | else |
434 | return -1; | |
435 | return 0; | |
436 | } | |
437 | ||
d65fd424 | 438 | static void duplicate_conf(struct conf_info *dst, const struct conf_info *src) |
46a0613f CC |
439 | { |
440 | *dst = *src; | |
13092a91 JH |
441 | dst->name = xstrdup_or_null(src->name); |
442 | dst->key = xstrdup_or_null(src->key); | |
443 | dst->command = xstrdup_or_null(src->command); | |
c364b7ef | 444 | dst->cmd = xstrdup_or_null(src->cmd); |
46a0613f CC |
445 | } |
446 | ||
cc71b0de | 447 | static struct arg_item *get_conf_item(const char *name) |
46a0613f | 448 | { |
8966a394 | 449 | struct list_head *pos; |
cc71b0de | 450 | struct arg_item *item; |
46a0613f CC |
451 | |
452 | /* Look up item with same name */ | |
8966a394 | 453 | list_for_each(pos, &conf_head) { |
cc71b0de | 454 | item = list_entry(pos, struct arg_item, list); |
46a0613f CC |
455 | if (!strcasecmp(item->conf.name, name)) |
456 | return item; | |
457 | } | |
458 | ||
459 | /* Item does not already exists, create it */ | |
ca56dadb | 460 | CALLOC_ARRAY(item, 1); |
46a0613f CC |
461 | duplicate_conf(&item->conf, &default_conf_info); |
462 | item->conf.name = xstrdup(name); | |
463 | ||
8966a394 | 464 | list_add_tail(&item->list, &conf_head); |
46a0613f CC |
465 | |
466 | return item; | |
467 | } | |
468 | ||
c364b7ef ZH |
469 | enum trailer_info_type { TRAILER_KEY, TRAILER_COMMAND, TRAILER_CMD, |
470 | TRAILER_WHERE, TRAILER_IF_EXISTS, TRAILER_IF_MISSING }; | |
46a0613f CC |
471 | |
472 | static struct { | |
473 | const char *name; | |
474 | enum trailer_info_type type; | |
475 | } trailer_config_items[] = { | |
476 | { "key", TRAILER_KEY }, | |
477 | { "command", TRAILER_COMMAND }, | |
c364b7ef | 478 | { "cmd", TRAILER_CMD }, |
46a0613f CC |
479 | { "where", TRAILER_WHERE }, |
480 | { "ifexists", TRAILER_IF_EXISTS }, | |
481 | { "ifmissing", TRAILER_IF_MISSING } | |
482 | }; | |
483 | ||
783a86c1 | 484 | static int git_trailer_default_config(const char *conf_key, const char *value, |
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")) { | |
510 | separators = xstrdup(value); | |
511 | } | |
512 | } | |
513 | return 0; | |
514 | } | |
515 | ||
783a86c1 | 516 | static int git_trailer_config(const char *conf_key, const char *value, |
5cf88fd8 | 517 | void *cb UNUSED) |
46a0613f CC |
518 | { |
519 | const char *trailer_item, *variable_name; | |
cc71b0de | 520 | struct arg_item *item; |
46a0613f CC |
521 | struct conf_info *conf; |
522 | char *name = NULL; | |
523 | enum trailer_info_type type; | |
524 | int i; | |
525 | ||
526 | if (!skip_prefix(conf_key, "trailer.", &trailer_item)) | |
527 | return 0; | |
528 | ||
529 | variable_name = strrchr(trailer_item, '.'); | |
530 | if (!variable_name) | |
531 | return 0; | |
532 | ||
533 | variable_name++; | |
534 | for (i = 0; i < ARRAY_SIZE(trailer_config_items); i++) { | |
535 | if (strcmp(trailer_config_items[i].name, variable_name)) | |
536 | continue; | |
537 | name = xstrndup(trailer_item, variable_name - trailer_item - 1); | |
538 | type = trailer_config_items[i].type; | |
539 | break; | |
540 | } | |
541 | ||
542 | if (!name) | |
543 | return 0; | |
544 | ||
545 | item = get_conf_item(name); | |
546 | conf = &item->conf; | |
547 | free(name); | |
548 | ||
549 | switch (type) { | |
550 | case TRAILER_KEY: | |
551 | if (conf->key) | |
552 | warning(_("more than one %s"), conf_key); | |
553 | conf->key = xstrdup(value); | |
554 | break; | |
555 | case TRAILER_COMMAND: | |
556 | if (conf->command) | |
557 | warning(_("more than one %s"), conf_key); | |
558 | conf->command = xstrdup(value); | |
559 | break; | |
c364b7ef ZH |
560 | case TRAILER_CMD: |
561 | if (conf->cmd) | |
562 | warning(_("more than one %s"), conf_key); | |
563 | conf->cmd = xstrdup(value); | |
564 | break; | |
46a0613f | 565 | case TRAILER_WHERE: |
52fc319d | 566 | if (trailer_set_where(&conf->where, value)) |
46a0613f CC |
567 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
568 | break; | |
569 | case TRAILER_IF_EXISTS: | |
52fc319d | 570 | if (trailer_set_if_exists(&conf->if_exists, value)) |
46a0613f CC |
571 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
572 | break; | |
573 | case TRAILER_IF_MISSING: | |
52fc319d | 574 | if (trailer_set_if_missing(&conf->if_missing, value)) |
46a0613f CC |
575 | warning(_("unknown value '%s' for key '%s'"), value, conf_key); |
576 | break; | |
577 | default: | |
033abf97 | 578 | BUG("trailer.c: unhandled type %d", type); |
46a0613f CC |
579 | } |
580 | return 0; | |
581 | } | |
f0a90b4e | 582 | |
e8c352c3 JT |
583 | static void ensure_configured(void) |
584 | { | |
585 | if (configured) | |
586 | return; | |
587 | ||
588 | /* Default config must be setup first */ | |
52fc319d PB |
589 | default_conf_info.where = WHERE_END; |
590 | default_conf_info.if_exists = EXISTS_ADD_IF_DIFFERENT_NEIGHBOR; | |
591 | default_conf_info.if_missing = MISSING_ADD; | |
e8c352c3 JT |
592 | git_config(git_trailer_default_config, NULL); |
593 | git_config(git_trailer_config, NULL); | |
594 | configured = 1; | |
595 | } | |
596 | ||
cc71b0de | 597 | static const char *token_from_item(struct arg_item *item, char *tok) |
f0a90b4e CC |
598 | { |
599 | if (item->conf.key) | |
600 | return item->conf.key; | |
601 | if (tok) | |
602 | return tok; | |
603 | return item->conf.name; | |
604 | } | |
605 | ||
0d2db00e | 606 | static int token_matches_item(const char *tok, struct arg_item *item, size_t tok_len) |
f0a90b4e CC |
607 | { |
608 | if (!strncasecmp(tok, item->conf.name, tok_len)) | |
609 | return 1; | |
610 | return item->conf.key ? !strncasecmp(tok, item->conf.key, tok_len) : 0; | |
611 | } | |
612 | ||
fdbf4510 | 613 | /* |
e4319562 JT |
614 | * If the given line is of the form |
615 | * "<token><optional whitespace><separator>..." or "<separator>...", return the | |
616 | * location of the separator. Otherwise, return -1. The optional whitespace | |
617 | * is allowed there primarily to allow things like "Bug #43" where <token> is | |
618 | * "Bug" and <separator> is "#". | |
619 | * | |
620 | * The separator-starts-line case (in which this function returns 0) is | |
621 | * distinguished from the non-well-formed-line case (in which this function | |
622 | * returns -1) because some callers of this function need such a distinction. | |
fdbf4510 | 623 | */ |
0d2db00e | 624 | static ssize_t find_separator(const char *line, const char *separators) |
f0a90b4e | 625 | { |
e4319562 JT |
626 | int whitespace_found = 0; |
627 | const char *c; | |
628 | for (c = line; *c; c++) { | |
629 | if (strchr(separators, *c)) | |
630 | return c - line; | |
631 | if (!whitespace_found && (isalnum(*c) || *c == '-')) | |
632 | continue; | |
633 | if (c != line && (*c == ' ' || *c == '\t')) { | |
634 | whitespace_found = 1; | |
635 | continue; | |
636 | } | |
637 | break; | |
638 | } | |
639 | return -1; | |
fdbf4510 | 640 | } |
f0a90b4e | 641 | |
fdbf4510 JT |
642 | /* |
643 | * Obtain the token, value, and conf from the given trailer. | |
644 | * | |
645 | * separator_pos must not be 0, since the token cannot be an empty string. | |
646 | * | |
647 | * If separator_pos is -1, interpret the whole trailer as a token. | |
648 | */ | |
649 | static void parse_trailer(struct strbuf *tok, struct strbuf *val, | |
650 | const struct conf_info **conf, const char *trailer, | |
0d2db00e | 651 | ssize_t separator_pos) |
f0a90b4e | 652 | { |
cc71b0de | 653 | struct arg_item *item; |
0d2db00e | 654 | size_t tok_len; |
63ab3f34 | 655 | struct list_head *pos; |
f0a90b4e | 656 | |
fdbf4510 JT |
657 | if (separator_pos != -1) { |
658 | strbuf_add(tok, trailer, separator_pos); | |
f0a90b4e | 659 | strbuf_trim(tok); |
fdbf4510 | 660 | strbuf_addstr(val, trailer + separator_pos + 1); |
f0a90b4e CC |
661 | strbuf_trim(val); |
662 | } else { | |
663 | strbuf_addstr(tok, trailer); | |
664 | strbuf_trim(tok); | |
665 | } | |
f0a90b4e CC |
666 | |
667 | /* Lookup if the token matches something in the config */ | |
63ab3f34 | 668 | tok_len = token_len_without_separator(tok->buf, tok->len); |
cc71b0de JT |
669 | if (conf) |
670 | *conf = &default_conf_info; | |
8966a394 | 671 | list_for_each(pos, &conf_head) { |
cc71b0de | 672 | item = list_entry(pos, struct arg_item, list); |
63ab3f34 JT |
673 | if (token_matches_item(tok->buf, item, tok_len)) { |
674 | char *tok_buf = strbuf_detach(tok, NULL); | |
cc71b0de JT |
675 | if (conf) |
676 | *conf = &item->conf; | |
63ab3f34 JT |
677 | strbuf_addstr(tok, token_from_item(item, tok_buf)); |
678 | free(tok_buf); | |
679 | break; | |
680 | } | |
f0a90b4e | 681 | } |
f0a90b4e | 682 | } |
f0a90b4e | 683 | |
60ef86a1 JT |
684 | static struct trailer_item *add_trailer_item(struct list_head *head, char *tok, |
685 | char *val) | |
f0a90b4e | 686 | { |
241b5d3e | 687 | struct trailer_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
688 | new_item->token = tok; |
689 | new_item->value = val; | |
690 | list_add_tail(&new_item->list, head); | |
691 | return new_item; | |
f0a90b4e CC |
692 | } |
693 | ||
cc71b0de | 694 | static void add_arg_item(struct list_head *arg_head, char *tok, char *val, |
0ea5292e PB |
695 | const struct conf_info *conf, |
696 | const struct new_trailer_item *new_trailer_item) | |
f0a90b4e | 697 | { |
241b5d3e | 698 | struct arg_item *new_item = xcalloc(1, sizeof(*new_item)); |
17651326 BW |
699 | new_item->token = tok; |
700 | new_item->value = val; | |
701 | duplicate_conf(&new_item->conf, conf); | |
0ea5292e PB |
702 | if (new_trailer_item) { |
703 | if (new_trailer_item->where != WHERE_DEFAULT) | |
17651326 | 704 | new_item->conf.where = new_trailer_item->where; |
0ea5292e | 705 | if (new_trailer_item->if_exists != EXISTS_DEFAULT) |
17651326 | 706 | new_item->conf.if_exists = new_trailer_item->if_exists; |
0ea5292e | 707 | if (new_trailer_item->if_missing != MISSING_DEFAULT) |
17651326 | 708 | new_item->conf.if_missing = new_trailer_item->if_missing; |
0ea5292e | 709 | } |
17651326 | 710 | list_add_tail(&new_item->list, arg_head); |
f0a90b4e CC |
711 | } |
712 | ||
8966a394 | 713 | static void process_command_line_args(struct list_head *arg_head, |
51166b87 | 714 | struct list_head *new_trailer_head) |
f0a90b4e | 715 | { |
cc71b0de | 716 | struct arg_item *item; |
63ab3f34 JT |
717 | struct strbuf tok = STRBUF_INIT; |
718 | struct strbuf val = STRBUF_INIT; | |
719 | const struct conf_info *conf; | |
8966a394 | 720 | struct list_head *pos; |
85039fb6 | 721 | |
fdbf4510 JT |
722 | /* |
723 | * In command-line arguments, '=' is accepted (in addition to the | |
724 | * separators that are defined). | |
725 | */ | |
726 | char *cl_separators = xstrfmt("=%s", separators); | |
727 | ||
cc71b0de | 728 | /* Add an arg item for each configured trailer with a command */ |
8966a394 | 729 | list_for_each(pos, &conf_head) { |
cc71b0de | 730 | item = list_entry(pos, struct arg_item, list); |
63ab3f34 | 731 | if (item->conf.command) |
cc71b0de JT |
732 | add_arg_item(arg_head, |
733 | xstrdup(token_from_item(item, NULL)), | |
734 | xstrdup(""), | |
0ea5292e | 735 | &item->conf, NULL); |
85039fb6 | 736 | } |
f0a90b4e | 737 | |
cc71b0de | 738 | /* Add an arg item for each trailer on the command line */ |
51166b87 PB |
739 | list_for_each(pos, new_trailer_head) { |
740 | struct new_trailer_item *tr = | |
741 | list_entry(pos, struct new_trailer_item, list); | |
0d2db00e | 742 | ssize_t separator_pos = find_separator(tr->text, cl_separators); |
51166b87 | 743 | |
fdbf4510 JT |
744 | if (separator_pos == 0) { |
745 | struct strbuf sb = STRBUF_INIT; | |
51166b87 | 746 | strbuf_addstr(&sb, tr->text); |
fdbf4510 JT |
747 | strbuf_trim(&sb); |
748 | error(_("empty trailer token in trailer '%.*s'"), | |
749 | (int) sb.len, sb.buf); | |
750 | strbuf_release(&sb); | |
751 | } else { | |
51166b87 | 752 | parse_trailer(&tok, &val, &conf, tr->text, |
fdbf4510 | 753 | separator_pos); |
cc71b0de JT |
754 | add_arg_item(arg_head, |
755 | strbuf_detach(&tok, NULL), | |
756 | strbuf_detach(&val, NULL), | |
0ea5292e | 757 | conf, tr); |
fdbf4510 | 758 | } |
f0a90b4e CC |
759 | } |
760 | ||
fdbf4510 | 761 | free(cl_separators); |
f0a90b4e | 762 | } |
2013d850 | 763 | |
022349c3 | 764 | static void read_input_file(struct strbuf *sb, const char *file) |
2013d850 | 765 | { |
2013d850 | 766 | if (file) { |
022349c3 | 767 | if (strbuf_read_file(sb, file, 0) < 0) |
2013d850 CC |
768 | die_errno(_("could not read input file '%s'"), file); |
769 | } else { | |
022349c3 | 770 | if (strbuf_read(sb, fileno(stdin), 0) < 0) |
2013d850 CC |
771 | die_errno(_("could not read from stdin")); |
772 | } | |
022349c3 | 773 | } |
2013d850 | 774 | |
022349c3 JT |
775 | static const char *next_line(const char *str) |
776 | { | |
777 | const char *nl = strchrnul(str, '\n'); | |
778 | return nl + !!*nl; | |
779 | } | |
2013d850 | 780 | |
022349c3 JT |
781 | /* |
782 | * Return the position of the start of the last line. If len is 0, return -1. | |
783 | */ | |
0d2db00e | 784 | static ssize_t last_line(const char *buf, size_t len) |
022349c3 | 785 | { |
0d2db00e | 786 | ssize_t i; |
022349c3 JT |
787 | if (len == 0) |
788 | return -1; | |
789 | if (len == 1) | |
790 | return 0; | |
791 | /* | |
792 | * Skip the last character (in addition to the null terminator), | |
793 | * because if the last character is a newline, it is considered as part | |
794 | * of the last line anyway. | |
795 | */ | |
796 | i = len - 2; | |
2013d850 | 797 | |
022349c3 JT |
798 | for (; i >= 0; i--) { |
799 | if (buf[i] == '\n') | |
800 | return i + 1; | |
801 | } | |
802 | return 0; | |
2013d850 CC |
803 | } |
804 | ||
805 | /* | |
022349c3 JT |
806 | * Return the position of the start of the patch or the length of str if there |
807 | * is no patch in the message. | |
2013d850 | 808 | */ |
0d2db00e | 809 | static size_t find_patch_start(const char *str) |
2013d850 | 810 | { |
022349c3 | 811 | const char *s; |
2013d850 | 812 | |
022349c3 | 813 | for (s = str; *s; s = next_line(s)) { |
c188668e JK |
814 | const char *v; |
815 | ||
816 | if (skip_prefix(s, "---", &v) && isspace(*v)) | |
022349c3 | 817 | return s - str; |
2013d850 CC |
818 | } |
819 | ||
022349c3 | 820 | return s - str; |
2013d850 CC |
821 | } |
822 | ||
823 | /* | |
022349c3 JT |
824 | * Return the position of the first trailer line or len if there are no |
825 | * trailers. | |
2013d850 | 826 | */ |
0d2db00e | 827 | static size_t find_trailer_start(const char *buf, size_t len) |
2013d850 | 828 | { |
022349c3 | 829 | const char *s; |
0d2db00e JK |
830 | ssize_t end_of_title, l; |
831 | int only_spaces = 1; | |
14624506 | 832 | int recognized_prefix = 0, trailer_lines = 0, non_trailer_lines = 0; |
60ef86a1 JT |
833 | /* |
834 | * Number of possible continuation lines encountered. This will be | |
835 | * reset to 0 if we encounter a trailer (since those lines are to be | |
836 | * considered continuations of that trailer), and added to | |
837 | * non_trailer_lines if we encounter a non-trailer (since those lines | |
838 | * are to be considered non-trailers). | |
839 | */ | |
840 | int possible_continuation_lines = 0; | |
5c99995d CC |
841 | |
842 | /* The first paragraph is the title and cannot be trailers */ | |
022349c3 JT |
843 | for (s = buf; s < buf + len; s = next_line(s)) { |
844 | if (s[0] == comment_line_char) | |
5c99995d | 845 | continue; |
022349c3 | 846 | if (is_blank_line(s)) |
5c99995d CC |
847 | break; |
848 | } | |
022349c3 | 849 | end_of_title = s - buf; |
2013d850 CC |
850 | |
851 | /* | |
14624506 JT |
852 | * Get the start of the trailers by looking starting from the end for a |
853 | * blank line before a set of non-blank lines that (i) are all | |
854 | * trailers, or (ii) contains at least one Git-generated trailer and | |
855 | * consists of at least 25% trailers. | |
2013d850 | 856 | */ |
022349c3 JT |
857 | for (l = last_line(buf, len); |
858 | l >= end_of_title; | |
859 | l = last_line(buf, l)) { | |
860 | const char *bol = buf + l; | |
14624506 | 861 | const char **p; |
0d2db00e | 862 | ssize_t separator_pos; |
14624506 | 863 | |
022349c3 | 864 | if (bol[0] == comment_line_char) { |
60ef86a1 JT |
865 | non_trailer_lines += possible_continuation_lines; |
866 | possible_continuation_lines = 0; | |
2013d850 | 867 | continue; |
60ef86a1 | 868 | } |
022349c3 | 869 | if (is_blank_line(bol)) { |
2013d850 CC |
870 | if (only_spaces) |
871 | continue; | |
60ef86a1 | 872 | non_trailer_lines += possible_continuation_lines; |
14624506 JT |
873 | if (recognized_prefix && |
874 | trailer_lines * 3 >= non_trailer_lines) | |
022349c3 JT |
875 | return next_line(bol) - buf; |
876 | else if (trailer_lines && !non_trailer_lines) | |
877 | return next_line(bol) - buf; | |
878 | return len; | |
2013d850 | 879 | } |
14624506 JT |
880 | only_spaces = 0; |
881 | ||
882 | for (p = git_generated_prefixes; *p; p++) { | |
022349c3 | 883 | if (starts_with(bol, *p)) { |
14624506 | 884 | trailer_lines++; |
60ef86a1 | 885 | possible_continuation_lines = 0; |
14624506 JT |
886 | recognized_prefix = 1; |
887 | goto continue_outer_loop; | |
888 | } | |
2013d850 | 889 | } |
14624506 | 890 | |
022349c3 JT |
891 | separator_pos = find_separator(bol, separators); |
892 | if (separator_pos >= 1 && !isspace(bol[0])) { | |
14624506 JT |
893 | struct list_head *pos; |
894 | ||
895 | trailer_lines++; | |
60ef86a1 | 896 | possible_continuation_lines = 0; |
14624506 JT |
897 | if (recognized_prefix) |
898 | continue; | |
899 | list_for_each(pos, &conf_head) { | |
900 | struct arg_item *item; | |
901 | item = list_entry(pos, struct arg_item, list); | |
022349c3 | 902 | if (token_matches_item(bol, item, |
14624506 JT |
903 | separator_pos)) { |
904 | recognized_prefix = 1; | |
905 | break; | |
906 | } | |
907 | } | |
022349c3 | 908 | } else if (isspace(bol[0])) |
60ef86a1 JT |
909 | possible_continuation_lines++; |
910 | else { | |
14624506 | 911 | non_trailer_lines++; |
60ef86a1 JT |
912 | non_trailer_lines += possible_continuation_lines; |
913 | possible_continuation_lines = 0; | |
2013d850 | 914 | } |
14624506 JT |
915 | continue_outer_loop: |
916 | ; | |
2013d850 CC |
917 | } |
918 | ||
022349c3 | 919 | return len; |
61cfef4c CC |
920 | } |
921 | ||
022349c3 | 922 | /* Return the position of the end of the trailers. */ |
0d2db00e | 923 | static size_t find_trailer_end(const char *buf, size_t len) |
2013d850 | 924 | { |
022349c3 | 925 | return len - ignore_non_trailer(buf, len); |
2013d850 CC |
926 | } |
927 | ||
022349c3 | 928 | static int ends_with_blank_line(const char *buf, size_t len) |
2013d850 | 929 | { |
0d2db00e | 930 | ssize_t ll = last_line(buf, len); |
022349c3 JT |
931 | if (ll < 0) |
932 | return 0; | |
933 | return is_blank_line(buf + ll); | |
2013d850 CC |
934 | } |
935 | ||
00002396 JK |
936 | static void unfold_value(struct strbuf *val) |
937 | { | |
938 | struct strbuf out = STRBUF_INIT; | |
939 | size_t i; | |
940 | ||
941 | strbuf_grow(&out, val->len); | |
942 | i = 0; | |
943 | while (i < val->len) { | |
944 | char c = val->buf[i++]; | |
945 | if (c == '\n') { | |
946 | /* Collapse continuation down to a single space. */ | |
947 | while (i < val->len && isspace(val->buf[i])) | |
948 | i++; | |
949 | strbuf_addch(&out, ' '); | |
950 | } else { | |
951 | strbuf_addch(&out, c); | |
952 | } | |
953 | } | |
954 | ||
955 | /* Empty lines may have left us with whitespace cruft at the edges */ | |
956 | strbuf_trim(&out); | |
957 | ||
958 | /* output goes back to val as if we modified it in-place */ | |
959 | strbuf_swap(&out, val); | |
960 | strbuf_release(&out); | |
961 | } | |
962 | ||
0d2db00e JK |
963 | static size_t process_input_file(FILE *outfile, |
964 | const char *str, | |
965 | struct list_head *head, | |
966 | const struct process_trailer_options *opts) | |
2013d850 | 967 | { |
e8c352c3 | 968 | struct trailer_info info; |
63ab3f34 JT |
969 | struct strbuf tok = STRBUF_INIT; |
970 | struct strbuf val = STRBUF_INIT; | |
a3b636e2 | 971 | size_t i; |
2013d850 | 972 | |
00a21f5c | 973 | trailer_info_get(&info, str, opts); |
2013d850 CC |
974 | |
975 | /* Print lines before the trailers as is */ | |
56c493ed JK |
976 | if (!opts->only_trailers) |
977 | fwrite(str, 1, info.trailer_start - str, outfile); | |
2013d850 | 978 | |
56c493ed | 979 | if (!opts->only_trailers && !info.blank_line_before_trailer) |
d0d2344a | 980 | fprintf(outfile, "\n"); |
2013d850 | 981 | |
e8c352c3 | 982 | for (i = 0; i < info.trailer_nr; i++) { |
fdbf4510 | 983 | int separator_pos; |
e8c352c3 JT |
984 | char *trailer = info.trailers[i]; |
985 | if (trailer[0] == comment_line_char) | |
60ef86a1 | 986 | continue; |
e8c352c3 | 987 | separator_pos = find_separator(trailer, separators); |
fdbf4510 | 988 | if (separator_pos >= 1) { |
e8c352c3 | 989 | parse_trailer(&tok, &val, NULL, trailer, |
fdbf4510 | 990 | separator_pos); |
00002396 JK |
991 | if (opts->unfold) |
992 | unfold_value(&val); | |
e8c352c3 JT |
993 | add_trailer_item(head, |
994 | strbuf_detach(&tok, NULL), | |
995 | strbuf_detach(&val, NULL)); | |
56c493ed | 996 | } else if (!opts->only_trailers) { |
e8c352c3 | 997 | strbuf_addstr(&val, trailer); |
14624506 JT |
998 | strbuf_strip_suffix(&val, "\n"); |
999 | add_trailer_item(head, | |
1000 | NULL, | |
1001 | strbuf_detach(&val, NULL)); | |
2887103b | 1002 | } |
2013d850 CC |
1003 | } |
1004 | ||
e8c352c3 JT |
1005 | trailer_info_release(&info); |
1006 | ||
1007 | return info.trailer_end - str; | |
2013d850 | 1008 | } |
b1d78d77 | 1009 | |
8966a394 | 1010 | static void free_all(struct list_head *head) |
b1d78d77 | 1011 | { |
8966a394 JT |
1012 | struct list_head *pos, *p; |
1013 | list_for_each_safe(pos, p, head) { | |
1014 | list_del(pos); | |
1015 | free_trailer_item(list_entry(pos, struct trailer_item, list)); | |
b1d78d77 CC |
1016 | } |
1017 | } | |
1018 | ||
076aa2cb | 1019 | static struct tempfile *trailers_tempfile; |
e1f89863 TK |
1020 | |
1021 | static FILE *create_in_place_tempfile(const char *file) | |
1022 | { | |
1023 | struct stat st; | |
31c2c7a0 | 1024 | struct strbuf filename_template = STRBUF_INIT; |
e1f89863 TK |
1025 | const char *tail; |
1026 | FILE *outfile; | |
1027 | ||
1028 | if (stat(file, &st)) | |
1029 | die_errno(_("could not stat %s"), file); | |
1030 | if (!S_ISREG(st.st_mode)) | |
1031 | die(_("file %s is not a regular file"), file); | |
1032 | if (!(st.st_mode & S_IWUSR)) | |
1033 | die(_("file %s is not writable by user"), file); | |
1034 | ||
1035 | /* Create temporary file in the same directory as the original */ | |
1036 | tail = strrchr(file, '/'); | |
afe8a907 | 1037 | if (tail) |
31c2c7a0 BW |
1038 | strbuf_add(&filename_template, file, tail - file + 1); |
1039 | strbuf_addstr(&filename_template, "git-interpret-trailers-XXXXXX"); | |
e1f89863 | 1040 | |
31c2c7a0 BW |
1041 | trailers_tempfile = xmks_tempfile_m(filename_template.buf, st.st_mode); |
1042 | strbuf_release(&filename_template); | |
076aa2cb | 1043 | outfile = fdopen_tempfile(trailers_tempfile, "w"); |
e1f89863 TK |
1044 | if (!outfile) |
1045 | die_errno(_("could not open temporary file")); | |
1046 | ||
1047 | return outfile; | |
1048 | } | |
1049 | ||
8abc8980 JK |
1050 | void process_trailers(const char *file, |
1051 | const struct process_trailer_options *opts, | |
51166b87 | 1052 | struct list_head *new_trailer_head) |
b1d78d77 | 1053 | { |
8966a394 | 1054 | LIST_HEAD(head); |
022349c3 | 1055 | struct strbuf sb = STRBUF_INIT; |
0d2db00e | 1056 | size_t trailer_end; |
d0d2344a | 1057 | FILE *outfile = stdout; |
b1d78d77 | 1058 | |
e8c352c3 | 1059 | ensure_configured(); |
b1d78d77 | 1060 | |
022349c3 | 1061 | read_input_file(&sb, file); |
b1d78d77 | 1062 | |
8abc8980 | 1063 | if (opts->in_place) |
e1f89863 TK |
1064 | outfile = create_in_place_tempfile(file); |
1065 | ||
b1d78d77 | 1066 | /* Print the lines before the trailers */ |
56c493ed | 1067 | trailer_end = process_input_file(outfile, sb.buf, &head, opts); |
b1d78d77 | 1068 | |
fdbdb64f JK |
1069 | if (!opts->only_input) { |
1070 | LIST_HEAD(arg_head); | |
06cf4f2d | 1071 | process_command_line_args(&arg_head, new_trailer_head); |
fdbdb64f JK |
1072 | process_trailers_lists(&head, &arg_head); |
1073 | } | |
b1d78d77 | 1074 | |
56c493ed | 1075 | print_all(outfile, &head, opts); |
b1d78d77 | 1076 | |
8966a394 | 1077 | free_all(&head); |
b1d78d77 CC |
1078 | |
1079 | /* Print the lines after the trailers as is */ | |
56c493ed JK |
1080 | if (!opts->only_trailers) |
1081 | fwrite(sb.buf + trailer_end, 1, sb.len - trailer_end, outfile); | |
b1d78d77 | 1082 | |
8abc8980 | 1083 | if (opts->in_place) |
e1f89863 TK |
1084 | if (rename_tempfile(&trailers_tempfile, file)) |
1085 | die_errno(_("could not rename temporary file to %s"), file); | |
1086 | ||
022349c3 | 1087 | strbuf_release(&sb); |
b1d78d77 | 1088 | } |
e8c352c3 | 1089 | |
00a21f5c JK |
1090 | void trailer_info_get(struct trailer_info *info, const char *str, |
1091 | const struct process_trailer_options *opts) | |
e8c352c3 JT |
1092 | { |
1093 | int patch_start, trailer_end, trailer_start; | |
1094 | struct strbuf **trailer_lines, **ptr; | |
1095 | char **trailer_strings = NULL; | |
1096 | size_t nr = 0, alloc = 0; | |
1097 | char **last = NULL; | |
1098 | ||
1099 | ensure_configured(); | |
1100 | ||
1688c9a4 JK |
1101 | if (opts->no_divider) |
1102 | patch_start = strlen(str); | |
1103 | else | |
1104 | patch_start = find_patch_start(str); | |
1105 | ||
e8c352c3 JT |
1106 | trailer_end = find_trailer_end(str, patch_start); |
1107 | trailer_start = find_trailer_start(str, trailer_end); | |
1108 | ||
1109 | trailer_lines = strbuf_split_buf(str + trailer_start, | |
1110 | trailer_end - trailer_start, | |
1111 | '\n', | |
1112 | 0); | |
1113 | for (ptr = trailer_lines; *ptr; ptr++) { | |
1114 | if (last && isspace((*ptr)->buf[0])) { | |
1115 | struct strbuf sb = STRBUF_INIT; | |
1116 | strbuf_attach(&sb, *last, strlen(*last), strlen(*last)); | |
1117 | strbuf_addbuf(&sb, *ptr); | |
1118 | *last = strbuf_detach(&sb, NULL); | |
1119 | continue; | |
1120 | } | |
1121 | ALLOC_GROW(trailer_strings, nr + 1, alloc); | |
1122 | trailer_strings[nr] = strbuf_detach(*ptr, NULL); | |
1123 | last = find_separator(trailer_strings[nr], separators) >= 1 | |
1124 | ? &trailer_strings[nr] | |
1125 | : NULL; | |
1126 | nr++; | |
1127 | } | |
1128 | strbuf_list_free(trailer_lines); | |
1129 | ||
1130 | info->blank_line_before_trailer = ends_with_blank_line(str, | |
1131 | trailer_start); | |
1132 | info->trailer_start = str + trailer_start; | |
1133 | info->trailer_end = str + trailer_end; | |
1134 | info->trailers = trailer_strings; | |
1135 | info->trailer_nr = nr; | |
1136 | } | |
1137 | ||
1138 | void trailer_info_release(struct trailer_info *info) | |
1139 | { | |
a3b636e2 | 1140 | size_t i; |
e8c352c3 JT |
1141 | for (i = 0; i < info->trailer_nr; i++) |
1142 | free(info->trailers[i]); | |
1143 | free(info->trailers); | |
1144 | } | |
a388b10f JK |
1145 | |
1146 | static void format_trailer_info(struct strbuf *out, | |
1147 | const struct trailer_info *info, | |
1148 | const struct process_trailer_options *opts) | |
1149 | { | |
0b691d86 | 1150 | size_t origlen = out->len; |
a3b636e2 | 1151 | size_t i; |
58311c66 JK |
1152 | |
1153 | /* If we want the whole block untouched, we can take the fast path. */ | |
8b966a05 | 1154 | if (!opts->only_trailers && !opts->unfold && !opts->filter && |
058761f1 ÆAB |
1155 | !opts->separator && !opts->key_only && !opts->value_only && |
1156 | !opts->key_value_separator) { | |
58311c66 JK |
1157 | strbuf_add(out, info->trailer_start, |
1158 | info->trailer_end - info->trailer_start); | |
1159 | return; | |
1160 | } | |
1161 | ||
1162 | for (i = 0; i < info->trailer_nr; i++) { | |
1163 | char *trailer = info->trailers[i]; | |
0d2db00e | 1164 | ssize_t separator_pos = find_separator(trailer, separators); |
58311c66 JK |
1165 | |
1166 | if (separator_pos >= 1) { | |
1167 | struct strbuf tok = STRBUF_INIT; | |
1168 | struct strbuf val = STRBUF_INIT; | |
1169 | ||
1170 | parse_trailer(&tok, &val, NULL, trailer, separator_pos); | |
250bea0c AW |
1171 | if (!opts->filter || opts->filter(&tok, opts->filter_data)) { |
1172 | if (opts->unfold) | |
1173 | unfold_value(&val); | |
0b691d86 AW |
1174 | |
1175 | if (opts->separator && out->len != origlen) | |
1176 | strbuf_addbuf(out, opts->separator); | |
d9b936db | 1177 | if (!opts->value_only) |
9d87d5ae | 1178 | strbuf_addbuf(out, &tok); |
058761f1 ÆAB |
1179 | if (!opts->key_only && !opts->value_only) { |
1180 | if (opts->key_value_separator) | |
1181 | strbuf_addbuf(out, opts->key_value_separator); | |
1182 | else | |
1183 | strbuf_addstr(out, ": "); | |
1184 | } | |
9d87d5ae ÆAB |
1185 | if (!opts->key_only) |
1186 | strbuf_addbuf(out, &val); | |
0b691d86 AW |
1187 | if (!opts->separator) |
1188 | strbuf_addch(out, '\n'); | |
250bea0c | 1189 | } |
58311c66 JK |
1190 | strbuf_release(&tok); |
1191 | strbuf_release(&val); | |
1192 | ||
1193 | } else if (!opts->only_trailers) { | |
0b691d86 AW |
1194 | if (opts->separator && out->len != origlen) { |
1195 | strbuf_addbuf(out, opts->separator); | |
1196 | } | |
58311c66 | 1197 | strbuf_addstr(out, trailer); |
0b691d86 AW |
1198 | if (opts->separator) { |
1199 | strbuf_rtrim(out); | |
1200 | } | |
58311c66 JK |
1201 | } |
1202 | } | |
1203 | ||
a388b10f JK |
1204 | } |
1205 | ||
1206 | void format_trailers_from_commit(struct strbuf *out, const char *msg, | |
1207 | const struct process_trailer_options *opts) | |
1208 | { | |
1209 | struct trailer_info info; | |
1210 | ||
00a21f5c | 1211 | trailer_info_get(&info, msg, opts); |
a388b10f JK |
1212 | format_trailer_info(out, &info, opts); |
1213 | trailer_info_release(&info); | |
1214 | } | |
f0939a0e JK |
1215 | |
1216 | void trailer_iterator_init(struct trailer_iterator *iter, const char *msg) | |
1217 | { | |
1218 | struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT; | |
1219 | strbuf_init(&iter->key, 0); | |
1220 | strbuf_init(&iter->val, 0); | |
1221 | opts.no_divider = 1; | |
1222 | trailer_info_get(&iter->info, msg, &opts); | |
1223 | iter->cur = 0; | |
1224 | } | |
1225 | ||
1226 | int trailer_iterator_advance(struct trailer_iterator *iter) | |
1227 | { | |
1228 | while (iter->cur < iter->info.trailer_nr) { | |
1229 | char *trailer = iter->info.trailers[iter->cur++]; | |
1230 | int separator_pos = find_separator(trailer, separators); | |
1231 | ||
1232 | if (separator_pos < 1) | |
1233 | continue; /* not a real trailer */ | |
1234 | ||
1235 | strbuf_reset(&iter->key); | |
1236 | strbuf_reset(&iter->val); | |
1237 | parse_trailer(&iter->key, &iter->val, NULL, | |
1238 | trailer, separator_pos); | |
1239 | unfold_value(&iter->val); | |
1240 | return 1; | |
1241 | } | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | void trailer_iterator_release(struct trailer_iterator *iter) | |
1246 | { | |
1247 | trailer_info_release(&iter->info); | |
1248 | strbuf_release(&iter->val); | |
1249 | strbuf_release(&iter->key); | |
1250 | } |