git.h (view raw)
1#ifndef GIT_H
2#define GIT_H
3
4
5/*
6 * from git:git-compat-util.h
7 */
8
9
10#ifndef FLEX_ARRAY
11#if defined(__GNUC__) && (__GNUC__ < 3)
12#define FLEX_ARRAY 0
13#else
14#define FLEX_ARRAY /* empty */
15#endif
16#endif
17
18
19#include <unistd.h>
20#include <stdio.h>
21#include <sys/stat.h>
22#include <fcntl.h>
23#include <stddef.h>
24#include <stdlib.h>
25#include <stdarg.h>
26#include <string.h>
27#include <errno.h>
28#include <limits.h>
29#include <sys/param.h>
30#include <netinet/in.h>
31#include <sys/types.h>
32#include <dirent.h>
33#include <time.h>
34#include <regex.h>
35
36/* On most systems <limits.h> would have given us this, but
37 * not on some systems (e.g. GNU/Hurd).
38 */
39#ifndef PATH_MAX
40#define PATH_MAX 4096
41#endif
42
43#ifdef __GNUC__
44#define NORETURN __attribute__((__noreturn__))
45#else
46#define NORETURN
47#ifndef __attribute__
48#define __attribute__(x)
49#endif
50#endif
51
52
53extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
54
55
56static inline char* xstrdup(const char *str)
57{
58 char *ret = strdup(str);
59 if (!ret)
60 die("Out of memory, strdup failed");
61 return ret;
62}
63
64static inline void *xmalloc(size_t size)
65{
66 void *ret = malloc(size);
67 if (!ret && !size)
68 ret = malloc(1);
69 if (!ret)
70 die("Out of memory, malloc failed");
71#ifdef XMALLOC_POISON
72 memset(ret, 0xA5, size);
73#endif
74 return ret;
75}
76
77static inline void *xrealloc(void *ptr, size_t size)
78{
79 void *ret = realloc(ptr, size);
80 if (!ret && !size)
81 ret = realloc(ptr, 1);
82 if (!ret)
83 die("Out of memory, realloc failed");
84 return ret;
85}
86
87static inline void *xcalloc(size_t nmemb, size_t size)
88{
89 void *ret = calloc(nmemb, size);
90 if (!ret && (!nmemb || !size))
91 ret = calloc(1, 1);
92 if (!ret)
93 die("Out of memory, calloc failed");
94 return ret;
95}
96
97static inline ssize_t xread(int fd, void *buf, size_t len)
98{
99 ssize_t nr;
100 while (1) {
101 nr = read(fd, buf, len);
102 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
103 continue;
104 return nr;
105 }
106}
107
108static inline ssize_t xwrite(int fd, const void *buf, size_t len)
109{
110 ssize_t nr;
111 while (1) {
112 nr = write(fd, buf, len);
113 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
114 continue;
115 return nr;
116 }
117}
118
119
120
121
122/*
123 * from git:cache.h
124 */
125
126
127enum object_type {
128 OBJ_NONE = 0,
129 OBJ_COMMIT = 1,
130 OBJ_TREE = 2,
131 OBJ_BLOB = 3,
132 OBJ_TAG = 4,
133 /* 5 for future expansion */
134 OBJ_OFS_DELTA = 6,
135 OBJ_REF_DELTA = 7,
136 OBJ_BAD,
137};
138
139
140/* Convert to/from hex/sha1 representation */
141#define MINIMUM_ABBREV 4
142#define DEFAULT_ABBREV 7
143
144extern const unsigned char null_sha1[20];
145
146extern int sha1_object_info(const unsigned char *, char *, unsigned long *);
147
148extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
149
150extern int get_sha1(const char *str, unsigned char *sha1);
151extern int get_sha1_hex(const char *hex, unsigned char *sha1);
152extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
153
154static inline int is_null_sha1(const unsigned char *sha1)
155{
156 return !memcmp(sha1, null_sha1, 20);
157}
158static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
159{
160 return memcmp(sha1, sha2, 20);
161}
162static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
163{
164 memcpy(sha_dst, sha_src, 20);
165}
166static inline void hashclr(unsigned char *hash)
167{
168 memset(hash, 0, 20);
169}
170
171
172/*
173 * from git:grep.h
174 */
175
176enum grep_pat_token {
177 GREP_PATTERN,
178 GREP_PATTERN_HEAD,
179 GREP_PATTERN_BODY,
180 GREP_AND,
181 GREP_OPEN_PAREN,
182 GREP_CLOSE_PAREN,
183 GREP_NOT,
184 GREP_OR,
185};
186
187enum grep_context {
188 GREP_CONTEXT_HEAD,
189 GREP_CONTEXT_BODY,
190};
191
192struct grep_pat {
193 struct grep_pat *next;
194 const char *origin;
195 int no;
196 enum grep_pat_token token;
197 const char *pattern;
198 regex_t regexp;
199};
200
201enum grep_expr_node {
202 GREP_NODE_ATOM,
203 GREP_NODE_NOT,
204 GREP_NODE_AND,
205 GREP_NODE_OR,
206};
207
208struct grep_opt {
209 struct grep_pat *pattern_list;
210 struct grep_pat **pattern_tail;
211 struct grep_expr *pattern_expression;
212 int prefix_length;
213 regex_t regexp;
214 unsigned linenum:1;
215 unsigned invert:1;
216 unsigned status_only:1;
217 unsigned name_only:1;
218 unsigned unmatch_name_only:1;
219 unsigned count:1;
220 unsigned word_regexp:1;
221 unsigned fixed:1;
222 unsigned all_match:1;
223#define GREP_BINARY_DEFAULT 0
224#define GREP_BINARY_NOMATCH 1
225#define GREP_BINARY_TEXT 2
226 unsigned binary:2;
227 unsigned extended:1;
228 unsigned relative:1;
229 unsigned pathname:1;
230 int regflags;
231 unsigned pre_context;
232 unsigned post_context;
233};
234
235
236extern void compile_grep_patterns(struct grep_opt *opt);
237extern void free_grep_patterns(struct grep_opt *opt);
238
239
240/*
241 * from git:object.h
242 */
243
244extern const char *type_names[9];
245
246struct object_list {
247 struct object *item;
248 struct object_list *next;
249};
250
251struct object_refs {
252 unsigned count;
253 struct object *base;
254 struct object *ref[FLEX_ARRAY]; /* more */
255};
256
257struct object_array {
258 unsigned int nr;
259 unsigned int alloc;
260 struct object_array_entry {
261 struct object *item;
262 const char *name;
263 } *objects;
264};
265
266#define TYPE_BITS 3
267#define FLAG_BITS 27
268
269/*
270 * The object type is stored in 3 bits.
271 */
272struct object {
273 unsigned parsed : 1;
274 unsigned used : 1;
275 unsigned type : TYPE_BITS;
276 unsigned flags : FLAG_BITS;
277 unsigned char sha1[20];
278};
279
280
281/*
282 * from git:tree.h
283 */
284
285struct tree {
286 struct object object;
287 void *buffer;
288 unsigned long size;
289};
290
291
292struct tree *lookup_tree(const unsigned char *sha1);
293int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size);
294int parse_tree(struct tree *tree);
295struct tree *parse_tree_indirect(const unsigned char *sha1);
296
297typedef int (*read_tree_fn_t)(const unsigned char *, const char *, int, const char *, unsigned int, int);
298
299extern int read_tree_recursive(struct tree *tree,
300 const char *base, int baselen,
301 int stage, const char **match,
302 read_tree_fn_t fn);
303
304extern int read_tree(struct tree *tree, int stage, const char **paths);
305
306
307/* from git:commit.h */
308
309struct commit_list {
310 struct commit *item;
311 struct commit_list *next;
312};
313
314struct commit {
315 struct object object;
316 void *util;
317 unsigned long date;
318 struct commit_list *parents;
319 struct tree *tree;
320 char *buffer;
321};
322
323
324struct commit *lookup_commit(const unsigned char *sha1);
325struct commit *lookup_commit_reference(const unsigned char *sha1);
326struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
327 int quiet);
328
329int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
330int parse_commit(struct commit *item);
331
332struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
333struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
334
335void free_commit_list(struct commit_list *list);
336
337void sort_by_date(struct commit_list **list);
338
339/* Commit formats */
340enum cmit_fmt {
341 CMIT_FMT_RAW,
342 CMIT_FMT_MEDIUM,
343 CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
344 CMIT_FMT_SHORT,
345 CMIT_FMT_FULL,
346 CMIT_FMT_FULLER,
347 CMIT_FMT_ONELINE,
348 CMIT_FMT_EMAIL,
349
350 CMIT_FMT_UNSPECIFIED,
351};
352
353extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject, int relative_date);
354
355
356typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
357typedef void* (*topo_sort_get_fn_t)(struct commit*);
358
359
360
361/*
362 * from git:tag.h
363 */
364
365extern const char *tag_type;
366
367struct tag {
368 struct object object;
369 struct object *tagged;
370 char *tag;
371 char *signature; /* not actually implemented */
372};
373
374extern struct tag *lookup_tag(const unsigned char *sha1);
375extern int parse_tag_buffer(struct tag *item, void *data, unsigned long size);
376extern int parse_tag(struct tag *item);
377extern struct object *deref_tag(struct object *, const char *, int);
378
379
380/*
381 * from git:diffcore.h
382 */
383
384struct diff_filespec {
385 unsigned char sha1[20];
386 char *path;
387 void *data;
388 void *cnt_data;
389 unsigned long size;
390 int xfrm_flags; /* for use by the xfrm */
391 unsigned short mode; /* file mode */
392 unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
393 * if false, use the name and read from
394 * the filesystem.
395 */
396#define DIFF_FILE_VALID(spec) (((spec)->mode) != 0)
397 unsigned should_free : 1; /* data should be free()'ed */
398 unsigned should_munmap : 1; /* data should be munmap()'ed */
399};
400
401struct diff_filepair {
402 struct diff_filespec *one;
403 struct diff_filespec *two;
404 unsigned short int score;
405 char status; /* M C R N D U (see Documentation/diff-format.txt) */
406 unsigned source_stays : 1; /* all of R/C are copies */
407 unsigned broken_pair : 1;
408 unsigned renamed_pair : 1;
409};
410
411#define DIFF_PAIR_UNMERGED(p) \
412 (!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
413
414#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
415
416#define DIFF_PAIR_BROKEN(p) \
417 ( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \
418 ((p)->broken_pair != 0) )
419
420#define DIFF_PAIR_TYPE_CHANGED(p) \
421 ((S_IFMT & (p)->one->mode) != (S_IFMT & (p)->two->mode))
422
423#define DIFF_PAIR_MODE_CHANGED(p) ((p)->one->mode != (p)->two->mode)
424
425extern void diff_free_filepair(struct diff_filepair *);
426
427extern int diff_unmodified_pair(struct diff_filepair *);
428
429struct diff_queue_struct {
430 struct diff_filepair **queue;
431 int alloc;
432 int nr;
433};
434
435
436/*
437 * from git:diff.h
438 */
439
440
441struct rev_info;
442struct diff_options;
443struct diff_queue_struct;
444
445typedef void (*change_fn_t)(struct diff_options *options,
446 unsigned old_mode, unsigned new_mode,
447 const unsigned char *old_sha1,
448 const unsigned char *new_sha1,
449 const char *base, const char *path);
450
451typedef void (*add_remove_fn_t)(struct diff_options *options,
452 int addremove, unsigned mode,
453 const unsigned char *sha1,
454 const char *base, const char *path);
455
456typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
457 struct diff_options *options, void *data);
458
459#define DIFF_FORMAT_RAW 0x0001
460#define DIFF_FORMAT_DIFFSTAT 0x0002
461#define DIFF_FORMAT_NUMSTAT 0x0004
462#define DIFF_FORMAT_SUMMARY 0x0008
463#define DIFF_FORMAT_PATCH 0x0010
464
465/* These override all above */
466#define DIFF_FORMAT_NAME 0x0100
467#define DIFF_FORMAT_NAME_STATUS 0x0200
468#define DIFF_FORMAT_CHECKDIFF 0x0400
469
470/* Same as output_format = 0 but we know that -s flag was given
471 * and we should not give default value to output_format.
472 */
473#define DIFF_FORMAT_NO_OUTPUT 0x0800
474
475#define DIFF_FORMAT_CALLBACK 0x1000
476
477struct diff_options {
478 const char *filter;
479 const char *orderfile;
480 const char *pickaxe;
481 const char *single_follow;
482 unsigned recursive:1,
483 tree_in_recursive:1,
484 binary:1,
485 text:1,
486 full_index:1,
487 silent_on_remove:1,
488 find_copies_harder:1,
489 color_diff:1,
490 color_diff_words:1;
491 int context;
492 int break_opt;
493 int detect_rename;
494 int line_termination;
495 int output_format;
496 int pickaxe_opts;
497 int rename_score;
498 int reverse_diff;
499 int rename_limit;
500 int setup;
501 int abbrev;
502 const char *msg_sep;
503 const char *stat_sep;
504 long xdl_opts;
505
506 int stat_width;
507 int stat_name_width;
508
509 int nr_paths;
510 const char **paths;
511 int *pathlens;
512 change_fn_t change;
513 add_remove_fn_t add_remove;
514 diff_format_fn_t format_callback;
515 void *format_callback_data;
516};
517
518enum color_diff {
519 DIFF_RESET = 0,
520 DIFF_PLAIN = 1,
521 DIFF_METAINFO = 2,
522 DIFF_FRAGINFO = 3,
523 DIFF_FILE_OLD = 4,
524 DIFF_FILE_NEW = 5,
525 DIFF_COMMIT = 6,
526 DIFF_WHITESPACE = 7,
527};
528
529
530extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
531 const char *base, struct diff_options *opt);
532
533extern int diff_root_tree_sha1(const unsigned char *new, const char *base,
534 struct diff_options *opt);
535
536extern int git_diff_ui_config(const char *var, const char *value);
537extern void diff_setup(struct diff_options *);
538extern int diff_opt_parse(struct diff_options *, const char **, int);
539extern int diff_setup_done(struct diff_options *);
540
541
542extern void diffcore_std(struct diff_options *);
543extern void diff_flush(struct diff_options*);
544
545
546/* diff-raw status letters */
547#define DIFF_STATUS_ADDED 'A'
548#define DIFF_STATUS_COPIED 'C'
549#define DIFF_STATUS_DELETED 'D'
550#define DIFF_STATUS_MODIFIED 'M'
551#define DIFF_STATUS_RENAMED 'R'
552#define DIFF_STATUS_TYPE_CHANGED 'T'
553#define DIFF_STATUS_UNKNOWN 'X'
554#define DIFF_STATUS_UNMERGED 'U'
555
556
557
558/*
559 * from git:refs.g
560 */
561
562typedef int each_ref_fn(const char *refname, const unsigned char *sha1, int flags, void *cb_data);
563extern int head_ref(each_ref_fn, void *);
564extern int for_each_ref(each_ref_fn, void *);
565extern int for_each_tag_ref(each_ref_fn, void *);
566extern int for_each_branch_ref(each_ref_fn, void *);
567extern int for_each_remote_ref(each_ref_fn, void *);
568
569
570
571/*
572 * from git:revision.h
573 */
574
575struct rev_info;
576struct log_info;
577
578typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
579
580struct rev_info {
581 /* Starting list */
582 struct commit_list *commits;
583 struct object_array pending;
584
585 /* Basic information */
586 const char *prefix;
587 void *prune_data;
588 prune_fn_t *prune_fn;
589
590 /* Traversal flags */
591 unsigned int dense:1,
592 no_merges:1,
593 no_walk:1,
594 remove_empty_trees:1,
595 simplify_history:1,
596 lifo:1,
597 topo_order:1,
598 tag_objects:1,
599 tree_objects:1,
600 blob_objects:1,
601 edge_hint:1,
602 limited:1,
603 unpacked:1, /* see also ignore_packed below */
604 boundary:1,
605 parents:1;
606
607 /* Diff flags */
608 unsigned int diff:1,
609 full_diff:1,
610 show_root_diff:1,
611 no_commit_id:1,
612 verbose_header:1,
613 ignore_merges:1,
614 combine_merges:1,
615 dense_combined_merges:1,
616 always_show_header:1;
617
618 /* Format info */
619 unsigned int shown_one:1,
620 abbrev_commit:1,
621 relative_date:1;
622
623 const char **ignore_packed; /* pretend objects in these are unpacked */
624 int num_ignore_packed;
625
626 unsigned int abbrev;
627 enum cmit_fmt commit_format;
628 struct log_info *loginfo;
629 int nr, total;
630 const char *mime_boundary;
631 const char *message_id;
632 const char *ref_message_id;
633 const char *add_signoff;
634 const char *extra_headers;
635
636 /* Filter by commit log message */
637 struct grep_opt *grep_filter;
638
639 /* special limits */
640 int max_count;
641 unsigned long max_age;
642 unsigned long min_age;
643
644 /* diff info for patches and for paths limiting */
645 struct diff_options diffopt;
646 struct diff_options pruning;
647
648 topo_sort_set_fn_t topo_setter;
649 topo_sort_get_fn_t topo_getter;
650};
651
652
653extern void init_revisions(struct rev_info *revs, const char *prefix);
654extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def);
655extern int handle_revision_arg(const char *arg, struct rev_info *revs,int flags,int cant_be_filename);
656
657extern void prepare_revision_walk(struct rev_info *revs);
658extern struct commit *get_revision(struct rev_info *revs);
659
660
661
662/* from git:log-tree.h */
663
664int log_tree_commit(struct rev_info *, struct commit *);
665
666
667
668#endif /* GIT_H */