2 #include "repository.h"
8 const char *git_l_attr__true
= "[internal]__TRUE__";
9 const char *git_l_attr__false
= "[internal]__FALSE__";
10 const char *git_l_attr__unset
= "[internal]__UNSET__";
12 static int sort_by_hash_and_name(const void *a_raw
, const void *b_raw
);
13 static void git_attr_rule__clear(git_attr_rule
*rule
);
15 int git_attr_file__new(
16 git_attr_file
**attrs_ptr
,
17 git_attr_file_source from
,
21 git_attr_file
*attrs
= NULL
;
23 attrs
= git__calloc(1, sizeof(git_attr_file
));
24 GITERR_CHECK_ALLOC(attrs
);
29 attrs
->pool
= git__calloc(1, sizeof(git_pool
));
30 if (!attrs
->pool
|| git_pool_init(attrs
->pool
, 1, 0) < 0)
32 attrs
->pool_is_allocated
= true;
36 size_t len
= strlen(path
);
38 attrs
->key
= git_pool_malloc(attrs
->pool
, (uint32_t)len
+ 3);
39 GITERR_CHECK_ALLOC(attrs
->key
);
41 attrs
->key
[0] = '0' + from
;
43 memcpy(&attrs
->key
[2], path
, len
);
44 attrs
->key
[len
+ 2] = '\0';
47 if (git_vector_init(&attrs
->rules
, 4, NULL
) < 0)
54 git_attr_file__free(attrs
);
59 int git_attr_file__parse_buffer(
60 git_repository
*repo
, const char *buffer
, git_attr_file
*attrs
)
63 const char *scan
= NULL
;
65 git_attr_rule
*rule
= NULL
;
67 assert(buffer
&& attrs
);
71 /* if subdir file path, convert context for file paths */
72 if (attrs
->key
&& git__suffixcmp(attrs
->key
, "/" GIT_ATTR_FILE
) == 0) {
73 context
= attrs
->key
+ 2;
74 context
[strlen(context
) - strlen(GIT_ATTR_FILE
)] = '\0';
77 while (!error
&& *scan
) {
78 /* allocate rule if needed */
79 if (!rule
&& !(rule
= git__calloc(1, sizeof(git_attr_rule
)))) {
84 /* parse the next "pattern attr attr attr" line */
85 if (!(error
= git_attr_fnmatch__parse(
86 &rule
->match
, attrs
->pool
, context
, &scan
)) &&
87 !(error
= git_attr_assignment__parse(
88 repo
, attrs
->pool
, &rule
->assigns
, &scan
)))
90 if (rule
->match
.flags
& GIT_ATTR_FNMATCH_MACRO
)
91 /* should generate error/warning if this is coming from any
92 * file other than .gitattributes at repo root.
94 error
= git_attr_cache__insert_macro(repo
, rule
);
96 error
= git_vector_insert(&attrs
->rules
, rule
);
99 /* if the rule wasn't a pattern, on to the next */
101 git_attr_rule__clear(rule
); /* reset rule contents */
102 if (error
== GIT_ENOTFOUND
)
105 rule
= NULL
; /* vector now "owns" the rule */
109 git_attr_rule__free(rule
);
111 /* restore file path used for context */
113 context
[strlen(context
)] = '.'; /* first char of GIT_ATTR_FILE */
118 int git_attr_file__new_and_load(
119 git_attr_file
**attrs_ptr
,
123 git_buf content
= GIT_BUF_INIT
;
125 if ((error
= git_attr_file__new(attrs_ptr
, 0, path
, NULL
)) < 0)
128 if (!(error
= git_futils_readbuffer(&content
, path
)))
129 error
= git_attr_file__parse_buffer(
130 NULL
, git_buf_cstr(&content
), *attrs_ptr
);
132 git_buf_free(&content
);
135 git_attr_file__free(*attrs_ptr
);
142 void git_attr_file__clear_rules(git_attr_file
*file
)
147 git_vector_foreach(&file
->rules
, i
, rule
)
148 git_attr_rule__free(rule
);
150 git_vector_free(&file
->rules
);
153 void git_attr_file__free(git_attr_file
*file
)
158 git_attr_file__clear_rules(file
);
160 if (file
->pool_is_allocated
) {
161 git_pool_clear(file
->pool
);
162 git__free(file
->pool
);
169 uint32_t git_attr_file__name_hash(const char *name
)
174 while ((c
= (int)*name
++) != 0)
175 h
= ((h
<< 5) + h
) + c
;
180 int git_attr_file__lookup_one(
182 const git_attr_path
*path
,
193 name
.name_hash
= git_attr_file__name_hash(attr
);
195 git_attr_file__foreach_matching_rule(file
, path
, i
, rule
) {
196 int pos
= git_vector_bsearch(&rule
->assigns
, &name
);
199 *value
= ((git_attr_assignment
*)
200 git_vector_get(&rule
->assigns
, pos
))->value
;
209 bool git_attr_fnmatch__match(
210 git_attr_fnmatch
*match
,
211 const git_attr_path
*path
)
215 if (match
->flags
& GIT_ATTR_FNMATCH_DIRECTORY
&& !path
->is_dir
)
218 if (match
->flags
& GIT_ATTR_FNMATCH_FULLPATH
)
219 fnm
= p_fnmatch(match
->pattern
, path
->path
, FNM_PATHNAME
);
220 else if (path
->is_dir
)
221 fnm
= p_fnmatch(match
->pattern
, path
->basename
, FNM_LEADING_DIR
);
223 fnm
= p_fnmatch(match
->pattern
, path
->basename
, 0);
225 return (fnm
== FNM_NOMATCH
) ? false : true;
228 bool git_attr_rule__match(
230 const git_attr_path
*path
)
232 bool matched
= git_attr_fnmatch__match(&rule
->match
, path
);
234 if (rule
->match
.flags
& GIT_ATTR_FNMATCH_NEGATIVE
)
241 git_attr_assignment
*git_attr_rule__lookup_assignment(
242 git_attr_rule
*rule
, const char *name
)
247 key
.name_hash
= git_attr_file__name_hash(name
);
249 pos
= git_vector_bsearch(&rule
->assigns
, &key
);
251 return (pos
>= 0) ? git_vector_get(&rule
->assigns
, pos
) : NULL
;
254 int git_attr_path__init(
255 git_attr_path
*info
, const char *path
, const char *base
)
257 /* build full path as best we can */
258 git_buf_init(&info
->full
, 0);
260 if (base
!= NULL
&& git_path_root(path
) < 0) {
261 if (git_buf_joinpath(&info
->full
, base
, path
) < 0)
263 info
->path
= info
->full
.ptr
+ strlen(base
);
265 if (git_buf_sets(&info
->full
, path
) < 0)
267 info
->path
= info
->full
.ptr
;
270 /* remove trailing slashes */
271 while (info
->full
.size
> 0) {
272 if (info
->full
.ptr
[info
->full
.size
- 1] != '/')
276 info
->full
.ptr
[info
->full
.size
] = '\0';
278 /* skip leading slashes in path */
279 while (*info
->path
== '/')
282 /* find trailing basename component */
283 info
->basename
= strrchr(info
->path
, '/');
286 if (!info
->basename
|| !*info
->basename
)
287 info
->basename
= info
->path
;
289 info
->is_dir
= (int)git_path_isdir(info
->full
.ptr
);
294 void git_attr_path__free(git_attr_path
*info
)
296 git_buf_free(&info
->full
);
298 info
->basename
= NULL
;
303 * From gitattributes(5):
305 * Patterns have the following format:
307 * - A blank line matches no files, so it can serve as a separator for
310 * - A line starting with # serves as a comment.
312 * - An optional prefix ! which negates the pattern; any matching file
313 * excluded by a previous pattern will become included again. If a negated
314 * pattern matches, this will override lower precedence patterns sources.
316 * - If the pattern ends with a slash, it is removed for the purpose of the
317 * following description, but it would only find a match with a directory. In
318 * other words, foo/ will match a directory foo and paths underneath it, but
319 * will not match a regular file or a symbolic link foo (this is consistent
320 * with the way how pathspec works in general in git).
322 * - If the pattern does not contain a slash /, git treats it as a shell glob
323 * pattern and checks for a match against the pathname without leading
326 * - Otherwise, git treats the pattern as a shell glob suitable for consumption
327 * by fnmatch(3) with the FNM_PATHNAME flag: wildcards in the pattern will
328 * not match a / in the pathname. For example, "Documentation/\*.html" matches
329 * "Documentation/git.html" but not "Documentation/ppc/ppc.html". A leading
330 * slash matches the beginning of the pathname; for example, "/\*.c" matches
331 * "cat-file.c" but not "mozilla-sha1/sha1.c".
335 * This will return 0 if the spec was filled out,
336 * GIT_ENOTFOUND if the fnmatch does not require matching, or
337 * another error code there was an actual problem.
339 int git_attr_fnmatch__parse(
340 git_attr_fnmatch
*spec
,
345 const char *pattern
, *scan
;
346 int slash_count
, allow_space
;
348 assert(spec
&& base
&& *base
);
350 spec
->flags
= (spec
->flags
& GIT_ATTR_FNMATCH_ALLOWSPACE
);
351 allow_space
= (spec
->flags
!= 0);
355 while (git__isspace(*pattern
)) pattern
++;
356 if (!*pattern
|| *pattern
== '#') {
357 *base
= git__next_line(pattern
);
358 return GIT_ENOTFOUND
;
361 if (*pattern
== '[') {
362 if (strncmp(pattern
, "[attr]", 6) == 0) {
363 spec
->flags
= spec
->flags
| GIT_ATTR_FNMATCH_MACRO
;
366 /* else a character range like [a-e]* which is accepted */
369 if (*pattern
== '!') {
370 spec
->flags
= spec
->flags
| GIT_ATTR_FNMATCH_NEGATIVE
;
375 for (scan
= pattern
; *scan
!= '\0'; ++scan
) {
376 /* scan until (non-escaped) white space */
377 if (git__isspace(*scan
) && *(scan
- 1) != '\\') {
378 if (!allow_space
|| (*scan
!= ' ' && *scan
!= '\t'))
383 spec
->flags
= spec
->flags
| GIT_ATTR_FNMATCH_FULLPATH
;
388 /* remember if we see an unescaped wildcard in pattern */
389 else if (git__iswildcard(*scan
) &&
390 (scan
== pattern
|| (*(scan
- 1) != '\\')))
391 spec
->flags
= spec
->flags
| GIT_ATTR_FNMATCH_HASWILD
;
396 spec
->length
= scan
- pattern
;
398 if (pattern
[spec
->length
- 1] == '/') {
400 spec
->flags
= spec
->flags
| GIT_ATTR_FNMATCH_DIRECTORY
;
401 if (--slash_count
<= 0)
402 spec
->flags
= spec
->flags
& ~GIT_ATTR_FNMATCH_FULLPATH
;
405 if ((spec
->flags
& GIT_ATTR_FNMATCH_FULLPATH
) != 0 &&
406 source
!= NULL
&& git_path_root(pattern
) < 0)
408 size_t sourcelen
= strlen(source
);
409 /* given an unrooted fullpath match from a file inside a repo,
410 * prefix the pattern with the relative directory of the source file
412 spec
->pattern
= git_pool_malloc(
413 pool
, (uint32_t)(sourcelen
+ spec
->length
+ 1));
415 memcpy(spec
->pattern
, source
, sourcelen
);
416 memcpy(spec
->pattern
+ sourcelen
, pattern
, spec
->length
);
417 spec
->length
+= sourcelen
;
418 spec
->pattern
[spec
->length
] = '\0';
421 spec
->pattern
= git_pool_strndup(pool
, pattern
, spec
->length
);
424 if (!spec
->pattern
) {
425 *base
= git__next_line(pattern
);
428 /* strip '\' that might have be used for internal whitespace */
429 char *to
= spec
->pattern
;
430 for (scan
= spec
->pattern
; *scan
; to
++, scan
++) {
432 scan
++; /* skip '\' but include next char */
438 spec
->length
= (to
- spec
->pattern
);
445 static int sort_by_hash_and_name(const void *a_raw
, const void *b_raw
)
447 const git_attr_name
*a
= a_raw
;
448 const git_attr_name
*b
= b_raw
;
450 if (b
->name_hash
< a
->name_hash
)
452 else if (b
->name_hash
> a
->name_hash
)
455 return strcmp(b
->name
, a
->name
);
458 static void git_attr_assignment__free(git_attr_assignment
*assign
)
460 /* name and value are stored in a git_pool associated with the
461 * git_attr_file, so they do not need to be freed here
464 assign
->value
= NULL
;
468 static int merge_assignments(void **old_raw
, void *new_raw
)
470 git_attr_assignment
**old
= (git_attr_assignment
**)old_raw
;
471 git_attr_assignment
*new = (git_attr_assignment
*)new_raw
;
473 GIT_REFCOUNT_DEC(*old
, git_attr_assignment__free
);
478 int git_attr_assignment__parse(
479 git_repository
*repo
,
485 const char *scan
= *base
;
486 git_attr_assignment
*assign
= NULL
;
488 assert(assigns
&& !assigns
->length
);
490 assigns
->_cmp
= sort_by_hash_and_name
;
492 while (*scan
&& *scan
!= '\n') {
493 const char *name_start
, *value_start
;
495 /* skip leading blanks */
496 while (git__isspace(*scan
) && *scan
!= '\n') scan
++;
498 /* allocate assign if needed */
500 assign
= git__calloc(1, sizeof(git_attr_assignment
));
501 GITERR_CHECK_ALLOC(assign
);
502 GIT_REFCOUNT_INC(assign
);
505 assign
->name_hash
= 5381;
506 assign
->value
= git_l_attr__true
;
508 /* look for magic name prefixes */
510 assign
->value
= git_l_attr__false
;
512 } else if (*scan
== '!') {
513 assign
->value
= git_l_attr__unset
; /* explicit unspecified state */
515 } else if (*scan
== '#') /* comment rest of line */
520 while (*scan
&& !git__isspace(*scan
) && *scan
!= '=') {
522 ((assign
->name_hash
<< 5) + assign
->name_hash
) + *scan
;
525 if (scan
== name_start
) {
526 /* must have found lone prefix (" - ") or leading = ("=foo")
527 * or end of buffer -- advance until whitespace and continue
529 while (*scan
&& !git__isspace(*scan
)) scan
++;
533 /* allocate permanent storage for name */
534 assign
->name
= git_pool_strndup(pool
, name_start
, scan
- name_start
);
535 GITERR_CHECK_ALLOC(assign
->name
);
537 /* if there is an equals sign, find the value */
539 for (value_start
= ++scan
; *scan
&& !git__isspace(*scan
); ++scan
);
541 /* if we found a value, allocate permanent storage for it */
542 if (scan
> value_start
) {
543 assign
->value
= git_pool_strndup(pool
, value_start
, scan
- value_start
);
544 GITERR_CHECK_ALLOC(assign
->value
);
548 /* expand macros (if given a repo with a macro cache) */
549 if (repo
!= NULL
&& assign
->value
== git_l_attr__true
) {
550 git_attr_rule
*macro
=
551 git_attr_cache__lookup_macro(repo
, assign
->name
);
555 git_attr_assignment
*massign
;
557 git_vector_foreach(¯o
->assigns
, i
, massign
) {
558 GIT_REFCOUNT_INC(massign
);
560 error
= git_vector_insert_sorted(
561 assigns
, massign
, &merge_assignments
);
562 if (error
< 0 && error
!= GIT_EEXISTS
)
568 /* insert allocated assign into vector */
569 error
= git_vector_insert_sorted(assigns
, assign
, &merge_assignments
);
570 if (error
< 0 && error
!= GIT_EEXISTS
)
573 /* clear assign since it is now "owned" by the vector */
578 git_attr_assignment__free(assign
);
580 *base
= git__next_line(scan
);
582 return (assigns
->length
== 0) ? GIT_ENOTFOUND
: 0;
585 static void git_attr_rule__clear(git_attr_rule
*rule
)
588 git_attr_assignment
*assign
;
593 if (!(rule
->match
.flags
& GIT_ATTR_FNMATCH_IGNORE
)) {
594 git_vector_foreach(&rule
->assigns
, i
, assign
)
595 GIT_REFCOUNT_DEC(assign
, git_attr_assignment__free
);
596 git_vector_free(&rule
->assigns
);
599 /* match.pattern is stored in a git_pool, so no need to free */
600 rule
->match
.pattern
= NULL
;
601 rule
->match
.length
= 0;
604 void git_attr_rule__free(git_attr_rule
*rule
)
606 git_attr_rule__clear(rule
);