line-log: convert to use parse_pathspec
[git/git.git] / cache.h
CommitLineData
e83c5163
LT
1#ifndef CACHE_H
2#define CACHE_H
3
4050c0df 4#include "git-compat-util.h"
5ecd293d 5#include "strbuf.h"
cf558704 6#include "hash.h"
75194438 7#include "advice.h"
65784830 8#include "gettext.h"
d1bf0e08 9#include "convert.h"
e83c5163 10
cef661fc 11#include SHA1_HEADER
9126f009
NP
12#ifndef git_SHA_CTX
13#define git_SHA_CTX SHA_CTX
14#define git_SHA1_Init SHA1_Init
15#define git_SHA1_Update SHA1_Update
16#define git_SHA1_Final SHA1_Final
17#endif
e83c5163 18
9126f009 19#include <zlib.h>
ef49a7a0
JH
20typedef struct git_zstream {
21 z_stream z;
22 unsigned long avail_in;
23 unsigned long avail_out;
24 unsigned long total_in;
25 unsigned long total_out;
26 unsigned char *next_in;
27 unsigned char *next_out;
28} git_zstream;
29
30void git_inflate_init(git_zstream *);
31void git_inflate_init_gzip_only(git_zstream *);
32void git_inflate_end(git_zstream *);
33int git_inflate(git_zstream *, int flush);
34
35void git_deflate_init(git_zstream *, int level);
36void git_deflate_init_gzip(git_zstream *, int level);
c3c2e1a0 37void git_deflate_init_raw(git_zstream *, int level);
ef49a7a0 38void git_deflate_end(git_zstream *);
568508e7 39int git_deflate_abort(git_zstream *);
ef49a7a0
JH
40int git_deflate_end_gently(git_zstream *);
41int git_deflate(git_zstream *, int flush);
42unsigned long git_deflate_bound(git_zstream *, unsigned long);
39c68542 43
962554c6 44#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
45#define DTYPE(de) ((de)->d_type)
46#else
0bdd79af
JH
47#undef DT_UNKNOWN
48#undef DT_DIR
49#undef DT_REG
50#undef DT_LNK
b6829693
ET
51#define DT_UNKNOWN 0
52#define DT_DIR 1
53#define DT_REG 2
a15c1c60 54#define DT_LNK 3
b6829693
ET
55#define DTYPE(de) DT_UNKNOWN
56#endif
57
40689ae1
MK
58/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
59#define S_IFINVALID 0030000
60
9eec4795
LT
61/*
62 * A "directory link" is a link to another git directory.
63 *
64 * The value 0160000 is not normally a valid mode, and
65 * also just happens to be S_IFDIR + S_IFLNK
66 *
67 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
68 * always having the same values everywhere. We should use
69 * our internal git values for these things, and then we can
70 * translate that to the OS-specific value. It just so
71 * happens that everybody shares the same bit representation
72 * in the UNIX world (and apparently wider too..)
73 */
302b9282
MW
74#define S_IFGITLINK 0160000
75#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 76
2386d658
LT
77/*
78 * Intensive research over the course of many years has shown that
79 * port 9418 is totally unused by anything else. Or
80 *
81 * Your search - "port 9418" - did not match any documents.
82 *
83 * as www.google.com puts it.
ba8a4970
LT
84 *
85 * This port has been properly assigned for git use by IANA:
86 * git (Assigned-9418) [I06-050728-0001].
87 *
88 * git 9418/tcp git pack transfer service
89 * git 9418/udp git pack transfer service
90 *
91 * with Linus Torvalds <torvalds@osdl.org> as the point of
92 * contact. September 2005.
93 *
94 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
95 */
96#define DEFAULT_GIT_PORT 9418
97
e83c5163
LT
98/*
99 * Basic data structures for the directory cache
e83c5163
LT
100 */
101
102#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
103struct cache_header {
ccc4feb5
LT
104 unsigned int hdr_signature;
105 unsigned int hdr_version;
106 unsigned int hdr_entries;
e83c5163
LT
107};
108
9d227781
JH
109#define INDEX_FORMAT_LB 2
110#define INDEX_FORMAT_UB 4
111
e83c5163
LT
112/*
113 * The "cache_time" is just the low 32 bits of the
114 * time. It doesn't matter if it overflows - we only
115 * check it for equality in the 32 bits we save.
116 */
117struct cache_time {
118 unsigned int sec;
119 unsigned int nsec;
120};
121
c21d39d7
MH
122struct stat_data {
123 struct cache_time sd_ctime;
124 struct cache_time sd_mtime;
125 unsigned int sd_dev;
126 unsigned int sd_ino;
127 unsigned int sd_uid;
128 unsigned int sd_gid;
129 unsigned int sd_size;
130};
131
e83c5163 132struct cache_entry {
c21d39d7 133 struct stat_data ce_stat_data;
ccc4feb5 134 unsigned int ce_mode;
7a51ed66 135 unsigned int ce_flags;
b60e188c 136 unsigned int ce_namelen;
e83c5163 137 unsigned char sha1[20];
eb7a2f1d 138 struct cache_entry *next;
8f1d2e6f 139 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
140};
141
95fd5bf8 142#define CE_STAGEMASK (0x3000)
16ce2e4c 143#define CE_EXTENDED (0x4000)
5f73076c 144#define CE_VALID (0x8000)
aee46198 145#define CE_STAGESHIFT 12
95fd5bf8 146
06aaaa0b
NTND
147/*
148 * Range 0xFFFF0000 in ce_flags is divided into
149 * two parts: in-memory flags and on-disk ones.
150 * Flags in CE_EXTENDED_FLAGS will get saved on-disk
151 * if you want to save a new flag, add it in
152 * CE_EXTENDED_FLAGS
153 *
154 * In-memory only flags
155 */
2977ffbb
NTND
156#define CE_UPDATE (1 << 16)
157#define CE_REMOVE (1 << 17)
158#define CE_UPTODATE (1 << 18)
159#define CE_ADDED (1 << 19)
a22c6371 160
2977ffbb
NTND
161#define CE_HASHED (1 << 20)
162#define CE_UNHASHED (1 << 21)
163#define CE_WT_REMOVE (1 << 22) /* remove in work directory */
164#define CE_CONFLICTED (1 << 23)
7a51ed66 165
2977ffbb 166#define CE_UNPACKED (1 << 24)
2431afbf 167#define CE_NEW_SKIP_WORKTREE (1 << 25)
da165f47 168
e721c154
NTND
169/* used to temporarily mark paths matched by pathspecs */
170#define CE_MATCHED (1 << 26)
171
06aaaa0b
NTND
172/*
173 * Extended on-disk flags
174 */
2977ffbb
NTND
175#define CE_INTENT_TO_ADD (1 << 29)
176#define CE_SKIP_WORKTREE (1 << 30)
06aaaa0b 177/* CE_EXTENDED2 is for future extension */
2977ffbb 178#define CE_EXTENDED2 (1 << 31)
06aaaa0b 179
44a36913 180#define CE_EXTENDED_FLAGS (CE_INTENT_TO_ADD | CE_SKIP_WORKTREE)
06aaaa0b
NTND
181
182/*
183 * Safeguard to avoid saving wrong flags:
184 * - CE_EXTENDED2 won't get saved until its semantic is known
185 * - Bits in 0x0000FFFF have been saved in ce_flags already
186 * - Bits in 0x003F0000 are currently in-memory flags
187 */
188#if CE_EXTENDED_FLAGS & 0x803FFFFF
189#error "CE_EXTENDED_FLAGS out of range"
190#endif
191
64acde94
NTND
192struct pathspec;
193
eb7a2f1d
LT
194/*
195 * Copy the sha1 and stat state of a cache entry from one to
196 * another. But we never change the name, or the hash state!
197 */
198#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
20d142b4
RS
199static inline void copy_cache_entry(struct cache_entry *dst,
200 const struct cache_entry *src)
eb7a2f1d
LT
201{
202 unsigned int state = dst->ce_flags & CE_STATE_MASK;
203
204 /* Don't copy hash chain and name */
205 memcpy(dst, src, offsetof(struct cache_entry, next));
206
207 /* Restore the hash state */
208 dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
209}
210
b60e188c 211static inline unsigned create_ce_flags(unsigned stage)
7fec10b7 212{
b60e188c 213 return (stage << CE_STAGESHIFT);
7fec10b7
JH
214}
215
b60e188c 216#define ce_namelen(ce) ((ce)->ce_namelen)
aee46198 217#define ce_size(ce) cache_entry_size(ce_namelen(ce))
7a51ed66 218#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
eadb5831 219#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
44a36913 220#define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
eadb5831 221#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
aee46198 222
e4479470 223#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
224static inline unsigned int create_ce_mode(unsigned int mode)
225{
8ae0a8c5 226 if (S_ISLNK(mode))
7a51ed66 227 return S_IFLNK;
302b9282 228 if (S_ISDIR(mode) || S_ISGITLINK(mode))
7a51ed66
LT
229 return S_IFGITLINK;
230 return S_IFREG | ce_permissions(mode);
8ae0a8c5 231}
20d142b4
RS
232static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce,
233 unsigned int mode)
185c975f 234{
78a8d641
JS
235 extern int trust_executable_bit, has_symlinks;
236 if (!has_symlinks && S_ISREG(mode) &&
7a51ed66 237 ce && S_ISLNK(ce->ce_mode))
78a8d641 238 return ce->ce_mode;
185c975f 239 if (!trust_executable_bit && S_ISREG(mode)) {
7a51ed66 240 if (ce && S_ISREG(ce->ce_mode))
185c975f
JH
241 return ce->ce_mode;
242 return create_ce_mode(0666);
243 }
244 return create_ce_mode(mode);
245}
d6b8fc30
JH
246static inline int ce_to_dtype(const struct cache_entry *ce)
247{
248 unsigned ce_mode = ntohl(ce->ce_mode);
249 if (S_ISREG(ce_mode))
250 return DT_REG;
251 else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
252 return DT_DIR;
253 else if (S_ISLNK(ce_mode))
254 return DT_LNK;
255 else
256 return DT_UNKNOWN;
257}
b90d9b88
RS
258static inline unsigned int canon_mode(unsigned int mode)
259{
260 if (S_ISREG(mode))
261 return S_IFREG | ce_permissions(mode);
262 if (S_ISLNK(mode))
263 return S_IFLNK;
264 if (S_ISDIR(mode))
265 return S_IFDIR;
266 return S_IFGITLINK;
267}
e4479470 268
ee7825b5 269#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
f5cabd13 270
228e94f9
JH
271struct index_state {
272 struct cache_entry **cache;
9d227781 273 unsigned int version;
228e94f9 274 unsigned int cache_nr, cache_alloc, cache_changed;
cfc5789a 275 struct string_list *resolve_undo;
228e94f9 276 struct cache_tree *cache_tree;
fba2f38a 277 struct cache_time timestamp;
913e0e99
JH
278 unsigned name_hash_initialized : 1,
279 initialized : 1;
cf558704 280 struct hash_table name_hash;
2092678c 281 struct hash_table dir_hash;
228e94f9
JH
282};
283
284extern struct index_state the_index;
285
96872bc2
LT
286/* Name hashing */
287extern void add_name_hash(struct index_state *istate, struct cache_entry *ce);
2092678c
KB
288extern void remove_name_hash(struct index_state *istate, struct cache_entry *ce);
289extern void free_name_hash(struct index_state *istate);
96872bc2
LT
290
291
4aab5b46 292#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
293#define active_cache (the_index.cache)
294#define active_nr (the_index.cache_nr)
295#define active_alloc (the_index.cache_alloc)
296#define active_cache_changed (the_index.cache_changed)
297#define active_cache_tree (the_index.cache_tree)
e83c5163 298
4aab5b46
JH
299#define read_cache() read_index(&the_index)
300#define read_cache_from(path) read_index_from(&the_index, (path))
671c9b7e 301#define read_cache_preload(pathspec) read_index_preload(&the_index, (pathspec))
fa7b3c2f 302#define is_cache_unborn() is_index_unborn(&the_index)
e46bbcf6 303#define read_cache_unmerged() read_index_unmerged(&the_index)
4aab5b46
JH
304#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
305#define discard_cache() discard_index(&the_index)
94a5728c 306#define unmerged_cache() unmerged_index(&the_index)
4aab5b46
JH
307#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
308#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
81dc2307 309#define rename_cache_entry_at(pos, new_name) rename_index_entry_at(&the_index, (pos), (new_name))
4aab5b46
JH
310#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
311#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
38ed1d89
JH
312#define add_to_cache(path, st, flags) add_to_index(&the_index, (path), (st), (flags))
313#define add_file_to_cache(path, flags) add_file_to_index(&the_index, (path), (flags))
3deffc52 314#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL, NULL)
4bd5b7da
JH
315#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
316#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
cd2fef59 317#define cache_name_exists(name, namelen, igncase) index_name_exists(&the_index, (name), (namelen), (igncase))
98fa4738 318#define cache_name_is_other(name, namelen) index_name_is_other(&the_index, (name), (namelen))
cfc5789a 319#define resolve_undo_clear() resolve_undo_clear_index(&the_index)
8aa38563 320#define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
4421a823 321#define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
ff366825 322#define read_blob_data_from_cache(path, sz) read_blob_data_from_index(&the_index, (path), (sz))
4aab5b46 323#endif
e83c5163 324
edaec3fb
JH
325enum object_type {
326 OBJ_BAD = -1,
327 OBJ_NONE = 0,
328 OBJ_COMMIT = 1,
329 OBJ_TREE = 2,
330 OBJ_BLOB = 3,
331 OBJ_TAG = 4,
332 /* 5 for future expansion */
333 OBJ_OFS_DELTA = 6,
334 OBJ_REF_DELTA = 7,
355885d5 335 OBJ_ANY,
4b05548f 336 OBJ_MAX
edaec3fb
JH
337};
338
b45563a2
JH
339static inline enum object_type object_type(unsigned int mode)
340{
341 return S_ISDIR(mode) ? OBJ_TREE :
342 S_ISGITLINK(mode) ? OBJ_COMMIT :
343 OBJ_BLOB;
344}
345
2163e5db 346/* Double-check local_repo_env below if you add to this list. */
8ac069ac 347#define GIT_DIR_ENVIRONMENT "GIT_DIR"
a1bea2c1 348#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE"
892c41b9 349#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
a6f7f9a3 350#define GIT_PREFIX_ENVIRONMENT "GIT_PREFIX"
8ac069ac 351#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 352#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 353#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 354#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
355#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
356#define CONFIG_ENVIRONMENT "GIT_CONFIG"
2b64fc89 357#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"
d4ebc36c 358#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
0454dd93 359#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
6476b38b 360#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
d0bfd026
JH
361#define GITATTRIBUTES_FILE ".gitattributes"
362#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 363#define ATTRIBUTE_MACRO_PREFIX "[attr]"
a97a7468
JS
364#define GIT_NOTES_REF_ENVIRONMENT "GIT_NOTES_REF"
365#define GIT_NOTES_DEFAULT_REF "refs/notes/commits"
894a9d33 366#define GIT_NOTES_DISPLAY_REF_ENVIRONMENT "GIT_NOTES_DISPLAY_REF"
6956f858
TR
367#define GIT_NOTES_REWRITE_REF_ENVIRONMENT "GIT_NOTES_REWRITE_REF"
368#define GIT_NOTES_REWRITE_MODE_ENVIRONMENT "GIT_NOTES_REWRITE_MODE"
823ab40f 369#define GIT_LITERAL_PATHSPECS_ENVIRONMENT "GIT_LITERAL_PATHSPECS"
bb233d69 370
48a7c1c4 371/*
2cd83d10
JK
372 * This environment variable is expected to contain a boolean indicating
373 * whether we should or should not treat:
374 *
375 * GIT_DIR=foo.git git ...
376 *
377 * as if GIT_WORK_TREE=. was given. It's not expected that users will make use
378 * of this, but we use it internally to communicate to sub-processes that we
379 * are in a bare repo. If not set, defaults to true.
380 */
381#define GIT_IMPLICIT_WORK_TREE_ENVIRONMENT "GIT_IMPLICIT_WORK_TREE"
382
48a7c1c4 383/*
2163e5db
JK
384 * Repository-local GIT_* environment variables; these will be cleared
385 * when git spawns a sub-process that runs inside another repository.
386 * The array is NULL-terminated, which makes it easy to pass in the "env"
387 * parameter of a run-command invocation, or to do a simple walk.
48a7c1c4 388 */
2163e5db 389extern const char * const local_repo_env[];
48a7c1c4 390
7d1864ce
JH
391extern int is_bare_repository_cfg;
392extern int is_bare_repository(void);
68025633 393extern int is_inside_git_dir(void);
e90fdc39 394extern char *git_work_tree_cfg;
892c41b9 395extern int is_inside_work_tree(void);
d2b0708e 396extern int have_git_dir(void);
c5fba16c 397extern const char *get_git_dir(void);
b3256eb8 398extern int is_git_directory(const char *path);
8ac069ac
JH
399extern char *get_object_directory(void);
400extern char *get_index_file(void);
5da5c8f4 401extern char *get_graft_file(void);
d7ac12b2 402extern int set_git_dir(const char *path);
a1bea2c1
JT
403extern const char *get_git_namespace(void);
404extern const char *strip_namespace(const char *namespaced_ref);
e90fdc39 405extern const char *get_git_work_tree(void);
13d6ec91 406extern const char *read_gitfile(const char *path);
abc06822 407extern const char *resolve_gitdir(const char *suspect);
19757d80 408extern void set_git_work_tree(const char *tree);
8ac069ac
JH
409
410#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 411
6b5ee137 412extern const char **get_pathspec(const char *prefix, const char **pathspec);
59f0f2f3 413extern void setup_work_tree(void);
4ca06608 414extern const char *setup_git_directory_gently(int *);
d288a700 415extern const char *setup_git_directory(void);
edc54fb5 416extern char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 417extern const char *prefix_filename(const char *prefix, int len, const char *path);
c6e8c800 418extern int check_filename(const char *prefix, const char *name);
023e37c3
MM
419extern void verify_filename(const char *prefix,
420 const char *name,
421 int diagnose_misspelt_rev);
ea92f41f 422extern void verify_non_filename(const char *prefix, const char *name);
546e0fd9 423extern int path_inside_repo(const char *prefix, const char *path);
d288a700 424
f225aeb2
DB
425#define INIT_DB_QUIET 0x0001
426
b57fb80a 427extern int set_git_dir_init(const char *git_dir, const char *real_git_dir, int);
f225aeb2
DB
428extern int init_db(const char *template_dir, unsigned int flags);
429
e83c5163
LT
430#define alloc_nr(x) (((x)+16)*3/2)
431
6815e569
JK
432/*
433 * Realloc the buffer pointed at by variable 'x' so that it can hold
434 * at least 'nr' entries; the number of entries currently allocated
435 * is 'alloc', using the standard growing factor alloc_nr() macro.
436 *
01f6fd4b 437 * DO NOT USE any expression with side-effect for 'x', 'nr', or 'alloc'.
6815e569
JK
438 */
439#define ALLOC_GROW(x, nr, alloc) \
440 do { \
c927e6c6 441 if ((nr) > alloc) { \
4234a761
JH
442 if (alloc_nr(alloc) < (nr)) \
443 alloc = (nr); \
444 else \
445 alloc = alloc_nr(alloc); \
6815e569
JK
446 x = xrealloc((x), alloc * sizeof(*(x))); \
447 } \
98746061 448 } while (0)
6815e569 449
734aab75 450/* Initialize and use the cache information */
4aab5b46 451extern int read_index(struct index_state *);
671c9b7e 452extern int read_index_preload(struct index_state *, const char **pathspec);
4aab5b46 453extern int read_index_from(struct index_state *, const char *path);
fa7b3c2f 454extern int is_index_unborn(struct index_state *);
e46bbcf6 455extern int read_index_unmerged(struct index_state *);
e1afca4f 456extern int write_index(struct index_state *, int newfd);
4aab5b46 457extern int discard_index(struct index_state *);
d1f128b0 458extern int unmerged_index(const struct index_state *);
8dcf39c4 459extern int verify_path(const char *path);
cd2fef59 460extern struct cache_entry *index_name_exists(struct index_state *istate, const char *name, int namelen, int igncase);
d1f128b0 461extern int index_name_pos(const struct index_state *, const char *name, int namelen);
192268c1
JH
462#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
463#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 464#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
af3785dc 465#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
39425819 466#define ADD_CACHE_NEW_ONLY 16 /* Do not replace existing ones */
4aab5b46 467extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
81dc2307 468extern void rename_index_entry_at(struct index_state *, int pos, const char *new_name);
4aab5b46 469extern int remove_index_entry_at(struct index_state *, int pos);
36419c8e 470extern void remove_marked_cache_entries(struct index_state *istate);
4aab5b46 471extern int remove_file_from_index(struct index_state *, const char *path);
38ed1d89
JH
472#define ADD_CACHE_VERBOSE 1
473#define ADD_CACHE_PRETEND 2
01665924 474#define ADD_CACHE_IGNORE_ERRORS 4
041aee31 475#define ADD_CACHE_IGNORE_REMOVAL 8
39425819 476#define ADD_CACHE_INTENT 16
71c7b053 477#define ADD_CACHE_IMPLICIT_DOT 32 /* internal to "git add -u/-A" */
38ed1d89
JH
478extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
479extern int add_file_to_index(struct index_state *, const char *path, int flags);
6640f881 480extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
dbbce55b 481extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
98fa4738 482extern int index_name_is_other(const struct index_state *, const char *, int);
ff366825 483extern void *read_blob_data_from_index(struct index_state *, const char *, unsigned long *);
4bd5b7da
JH
484
485/* do stat comparison even if CE_VALID is true */
486#define CE_MATCH_IGNORE_VALID 01
487/* do not check the contents but report dirty on racily-clean entries */
56cac48c
NTND
488#define CE_MATCH_RACY_IS_DIRTY 02
489/* do stat comparison even if CE_SKIP_WORKTREE is true */
490#define CE_MATCH_IGNORE_SKIP_WORKTREE 04
21a6b9fa
RS
491extern int ie_match_stat(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
492extern int ie_modified(const struct index_state *, const struct cache_entry *, struct stat *, unsigned int);
4bd5b7da 493
eb9cb55b 494extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec);
c4ce46fc
JH
495
496#define HASH_WRITE_OBJECT 1
497#define HASH_FORMAT_CHECK 2
498extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags);
499extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags);
c21d39d7
MH
500
501/*
502 * Record to sd the data from st that we use to check whether a file
503 * might have changed.
504 */
505extern void fill_stat_data(struct stat_data *sd, struct stat *st);
506
507/*
508 * Return 0 if st is consistent with a file not having been changed
509 * since sd was filled. If there are differences, return a
510 * combination of MTIME_CHANGED, CTIME_CHANGED, OWNER_CHANGED,
511 * INODE_CHANGED, and DATA_CHANGED.
512 */
513extern int match_stat_data(const struct stat_data *sd, struct stat *st);
514
415e96c8
JH
515extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
516
405e5b2f
LT
517#define REFRESH_REALLY 0x0001 /* ignore_valid */
518#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
519#define REFRESH_QUIET 0x0004 /* be quiet about it */
520#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
3f1b7b60 521#define REFRESH_IGNORE_SUBMODULES 0x0010 /* ignore submodules */
43673fdd 522#define REFRESH_IN_PORCELAIN 0x0020 /* user friendly output, not "needs update" */
046613c5 523extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen, const char *header_msg);
405e5b2f 524
021b6e45
JH
525struct lock_file {
526 struct lock_file *next;
4723ee99 527 int fd;
5e635e39 528 pid_t owner;
1084b845 529 char on_list;
021b6e45 530 char filename[PATH_MAX];
415e96c8 531};
acd3b9ec
JH
532#define LOCK_DIE_ON_ERROR 1
533#define LOCK_NODEREF 2
1b018fd9 534extern int unable_to_lock_error(const char *path, int err);
e43a6fd3 535extern NORETURN void unable_to_lock_index_die(const char *path, int err);
40aaae88 536extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
ea3cd5c7 537extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
021b6e45 538extern int commit_lock_file(struct lock_file *);
ccdc4ec3 539extern void update_index_if_able(struct index_state *, struct lock_file *);
30ca07a2
JH
540
541extern int hold_locked_index(struct lock_file *, int);
542extern int commit_locked_index(struct lock_file *);
5e7f56ac 543extern void set_alternate_index_output(const char *);
d6cf61bf 544extern int close_lock_file(struct lock_file *);
021b6e45 545extern void rollback_lock_file(struct lock_file *);
eca35a25 546extern int delete_ref(const char *, const unsigned char *sha1, int delopt);
734aab75 547
2ae1c53b 548/* Environment bits from configuration mechanism */
17712991 549extern int trust_executable_bit;
1ce4790b 550extern int trust_ctime;
c08e4d5b 551extern int check_stat;
9378c161 552extern int quote_path_fully;
78a8d641 553extern int has_symlinks;
dce96489 554extern int minimum_abbrev, default_abbrev;
0a9b88b7 555extern int ignore_case;
5f73076c 556extern int assume_unchanged;
9f0bb90d 557extern int prefer_symlink_refs;
6de08ae6 558extern int log_all_ref_updates;
2f8acdb3 559extern int warn_ambiguous_refs;
457f06d6 560extern int shared_repository;
2ae1c53b 561extern const char *apply_default_whitespace;
86c91f91 562extern const char *apply_default_ignorewhitespace;
64589a03 563extern const char *git_attributes_file;
12f6c308 564extern int zlib_compression_level;
960ccca6
DH
565extern int core_compression_level;
566extern int core_compression_seen;
60bb8b14 567extern size_t packed_git_window_size;
77ccc5bb 568extern size_t packed_git_limit;
18bdec11 569extern size_t delta_base_cache_limit;
15366280 570extern unsigned long big_file_threshold;
568508e7 571extern unsigned long pack_size_limit_cfg;
dae556bd 572extern int read_replace_refs;
aafe9fba 573extern int fsync_object_files;
671c9b7e 574extern int core_preload_index;
08aefc9e 575extern int core_apply_sparse_checkout;
76759c7d 576extern int precomposed_unicode;
17712991 577
eff80a9f
JH
578/*
579 * The character that begins a commented line in user-editable file
580 * that is subject to stripspace.
581 */
582extern char comment_line_char;
583
9ed36cfa 584enum branch_track {
9188ed89 585 BRANCH_TRACK_UNSPECIFIED = -1,
9ed36cfa
JS
586 BRANCH_TRACK_NEVER = 0,
587 BRANCH_TRACK_REMOTE,
588 BRANCH_TRACK_ALWAYS,
589 BRANCH_TRACK_EXPLICIT,
4b05548f 590 BRANCH_TRACK_OVERRIDE
9ed36cfa
JS
591};
592
c998ae9b
DS
593enum rebase_setup_type {
594 AUTOREBASE_NEVER = 0,
595 AUTOREBASE_LOCAL,
596 AUTOREBASE_REMOTE,
4b05548f 597 AUTOREBASE_ALWAYS
c998ae9b
DS
598};
599
52153747 600enum push_default_type {
52153747
FAG
601 PUSH_DEFAULT_NOTHING = 0,
602 PUSH_DEFAULT_MATCHING,
b55e6775 603 PUSH_DEFAULT_SIMPLE,
53c40311 604 PUSH_DEFAULT_UPSTREAM,
f25950f3
CT
605 PUSH_DEFAULT_CURRENT,
606 PUSH_DEFAULT_UNSPECIFIED
52153747
FAG
607};
608
9ed36cfa 609extern enum branch_track git_branch_track;
c998ae9b 610extern enum rebase_setup_type autorebase;
52153747 611extern enum push_default_type push_default;
9ed36cfa 612
348df166
JS
613enum object_creation_mode {
614 OBJECT_CREATION_USES_HARDLINKS = 0,
4b05548f 615 OBJECT_CREATION_USES_RENAMES = 1
348df166
JS
616};
617
618extern enum object_creation_mode object_creation_mode;
be66a6c4 619
a97a7468
JS
620extern char *notes_ref_name;
621
7f3140cd
JS
622extern int grafts_replace_parents;
623
ab9cb76f
JH
624#define GIT_REPO_VERSION 0
625extern int repository_format_version;
626extern int check_repository_format(void);
627
734aab75
LT
628#define MTIME_CHANGED 0x0001
629#define CTIME_CHANGED 0x0002
630#define OWNER_CHANGED 0x0004
631#define MODE_CHANGED 0x0008
632#define INODE_CHANGED 0x0010
633#define DATA_CHANGED 0x0020
8ae0a8c5 634#define TYPE_CHANGED 0x0040
e83c5163 635
108bebea
AR
636extern char *mksnpath(char *buf, size_t n, const char *fmt, ...)
637 __attribute__((format (printf, 3, 4)));
fe2d7776
AR
638extern char *git_snpath(char *buf, size_t n, const char *fmt, ...)
639 __attribute__((format (printf, 3, 4)));
aba13e7c
AR
640extern char *git_pathdup(const char *fmt, ...)
641 __attribute__((format (printf, 1, 2)));
21cf3227
HKNN
642extern char *mkpathdup(const char *fmt, ...)
643 __attribute__((format (printf, 1, 2)));
108bebea 644
e83c5163 645/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
646extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
647extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
0bad611b
HV
648extern char *git_path_submodule(const char *path, const char *fmt, ...)
649 __attribute__((format (printf, 2, 3)));
650
73134b6d 651extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
652extern char *sha1_pack_name(const unsigned char *sha1);
653extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 654extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 655extern const unsigned char null_sha1[20];
1a812f3a
IM
656
657static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
0bef57ee 658{
1a812f3a
IM
659 int i;
660
661 for (i = 0; i < 20; i++, sha1++, sha2++) {
662 if (*sha1 != *sha2)
663 return *sha1 - *sha2;
664 }
665
666 return 0;
0bef57ee 667}
1a812f3a
IM
668
669static inline int is_null_sha1(const unsigned char *sha1)
a89fccd2 670{
1a812f3a 671 return !hashcmp(sha1, null_sha1);
a89fccd2 672}
1a812f3a 673
e702496e
SP
674static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
675{
676 memcpy(sha_dst, sha_src, 20);
677}
a8e0d16d
JH
678static inline void hashclr(unsigned char *hash)
679{
680 memset(hash, 0, 20);
681}
e83c5163 682
14d9c578
JK
683#define EMPTY_TREE_SHA1_HEX \
684 "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
dab0d410 685#define EMPTY_TREE_SHA1_BIN_LITERAL \
14d9c578
JK
686 "\x4b\x82\x5d\xc6\x42\xcb\x6e\xb9\xa0\x60" \
687 "\xe5\x4b\xf8\xd6\x92\x88\xfb\xee\x49\x04"
dab0d410
JN
688#define EMPTY_TREE_SHA1_BIN \
689 ((const unsigned char *) EMPTY_TREE_SHA1_BIN_LITERAL)
14d9c578 690
f8582cad
JK
691#define EMPTY_BLOB_SHA1_HEX \
692 "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391"
693#define EMPTY_BLOB_SHA1_BIN_LITERAL \
694 "\xe6\x9d\xe2\x9b\xb2\xd1\xd6\x43\x4b\x8b" \
695 "\x29\xae\x77\x5a\xd8\xc2\xe4\x8c\x53\x91"
696#define EMPTY_BLOB_SHA1_BIN \
697 ((const unsigned char *) EMPTY_BLOB_SHA1_BIN_LITERAL)
698
699static inline int is_empty_blob_sha1(const unsigned char *sha1)
700{
701 return !hashcmp(sha1, EMPTY_BLOB_SHA1_BIN);
702}
703
f2db68ed
HE
704int git_mkstemp(char *path, size_t n, const char *template);
705
003b33a8
DA
706int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
707
b862b61c
MM
708/* set default permissions by passing mode arguments to open(2) */
709int git_mkstemps_mode(char *pattern, int suffix_len, int mode);
710int git_mkstemp_mode(char *pattern, int mode);
711
06cbe855
HO
712/*
713 * NOTE NOTE NOTE!!
714 *
715 * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
716 * not be changed. Old repositories have core.sharedrepository written in
717 * numeric format, and therefore these values are preserved for compatibility
718 * reasons.
719 */
94df2506 720enum sharedrepo {
06cbe855
HO
721 PERM_UMASK = 0,
722 OLD_PERM_GROUP = 1,
723 OLD_PERM_EVERYBODY = 2,
724 PERM_GROUP = 0660,
4b05548f 725 PERM_EVERYBODY = 0664
94df2506
JH
726};
727int git_config_perm(const char *var, const char *value);
3a429d3b 728int adjust_shared_perm(const char *path);
b2cb9425 729int safe_create_leading_directories(char *path);
8e21d63b 730int safe_create_leading_directories_const(const char *path);
90a6464b 731int mkdir_in_gitdir(const char *path);
21cf3227 732extern void home_config_paths(char **global, char **xdg, char *file);
395de250 733extern char *expand_user_path(const char *path);
1c64b48e 734const char *enter_repo(const char *path, int strict);
e5392c51
JS
735static inline int is_absolute_path(const char *path)
736{
88135203 737 return is_dir_sep(path[0]) || has_dos_drive_prefix(path);
e5392c51 738}
90b4a71c 739int is_directory(const char *);
e2a57aac 740const char *real_path(const char *path);
e3e46cdb 741const char *real_path_if_valid(const char *path);
e2a57aac
CMN
742const char *absolute_path(const char *path);
743const char *relative_path(const char *abs, const char *base);
f3cad0ad 744int normalize_path_copy(char *dst, const char *src);
31171d9e 745int longest_ancestor_length(const char *path, struct string_list *prefixes);
4fcc86b0 746char *strip_path_suffix(const char *path, const char *suffix);
34b6cb8b 747int daemon_avoid_alias(const char *path);
4bb43de2 748int offset_1st_component(const char *path);
b2cb9425 749
e1111cef 750/* object replacement */
5bf29b95
JH
751#define READ_SHA1_FILE_REPLACE 1
752extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag);
f5552aee
CC
753static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
754{
5bf29b95
JH
755 return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE);
756}
e1111cef
JH
757extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
758static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
759{
760 if (!read_replace_refs)
761 return sha1;
762 return do_lookup_replace_object(sha1);
f5552aee 763}
e1111cef 764
e83c5163 765/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 766extern int sha1_object_info(const unsigned char *, unsigned long *);
ce9fbf16 767extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
c00e657d 768extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 769extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
bbac7311 770extern int force_object_loose(const unsigned char *sha1, time_t mtime);
f0270efd 771extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
eb4f4076 772extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
f0270efd 773extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
8237b185 774
0e8189e2
NP
775/* global flag to enable extra checks when accessing packed objects */
776extern int do_check_packed_object_crc;
777
5d6ccf5c 778extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 779
839837b9 780extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 781
cd673c1f 782extern int has_sha1_pack(const unsigned char *sha1);
8237b185 783extern int has_sha1_file(const unsigned char *sha1);
0f4dc14a 784extern int has_loose_object_nonlocal(const unsigned char *sha1);
8237b185 785
bf592c50
DB
786extern int has_pack_index(const unsigned char *sha1);
787
40d52ff7
JK
788extern void assert_sha1_type(const unsigned char *sha1, enum object_type expect);
789
192a6be2
LT
790extern const signed char hexval_table[256];
791static inline unsigned int hexval(unsigned char c)
e49521b5
JH
792{
793 return hexval_table[c];
794}
795
e83c5163 796/* Convert to/from hex/sha1 representation */
dce96489
LT
797#define MINIMUM_ABBREV minimum_abbrev
798#define DEFAULT_ABBREV default_abbrev
46a6c262 799
573285e5
CP
800struct object_context {
801 unsigned char tree[20];
802 char path[PATH_MAX];
803 unsigned mode;
804};
805
daba53ae
JH
806#define GET_SHA1_QUIETLY 01
807#define GET_SHA1_COMMIT 02
808#define GET_SHA1_COMMITTISH 04
809#define GET_SHA1_TREE 010
810#define GET_SHA1_TREEISH 020
811#define GET_SHA1_BLOB 040
33bd598c 812#define GET_SHA1_ONLY_TO_DIE 04000
37c00e55 813
3c249c95 814extern int get_sha1(const char *str, unsigned char *sha1);
daba53ae 815extern int get_sha1_commit(const char *str, unsigned char *sha1);
cd74e473 816extern int get_sha1_committish(const char *str, unsigned char *sha1);
daba53ae
JH
817extern int get_sha1_tree(const char *str, unsigned char *sha1);
818extern int get_sha1_treeish(const char *str, unsigned char *sha1);
819extern int get_sha1_blob(const char *str, unsigned char *sha1);
8c135ea2 820extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
33bd598c 821extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc);
d4e85a1a 822
957d7406
JH
823typedef int each_abbrev_fn(const unsigned char *sha1, void *);
824extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
d4e85a1a
MH
825
826/*
827 * Try to read a SHA1 in hexadecimal format from the 40 characters
828 * starting at hex. Write the 20-byte result to sha1 in binary form.
829 * Return 0 on success. Reading stops if a NUL is encountered in the
830 * input, so it is safe to pass this function an arbitrary
831 * null-terminated string.
832 */
197ee8c9 833extern int get_sha1_hex(const char *hex, unsigned char *sha1);
d4e85a1a 834
197ee8c9 835extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
dfefa935 836extern int read_ref_full(const char *refname, unsigned char *sha1,
c6893323 837 int reading, int *flags);
dfefa935 838extern int read_ref(const char *refname, unsigned char *sha1);
7cb36842
MH
839
840/*
841 * Resolve a reference, recursively following symbolic refererences.
842 *
843 * Store the referred-to object's name in sha1 and return the name of
844 * the non-symbolic reference that ultimately pointed at it. The
845 * return value, if not NULL, is a pointer into either a static buffer
846 * or the input ref.
847 *
848 * If the reference cannot be resolved to an object, the behavior
849 * depends on the "reading" argument:
850 *
851 * - If reading is set, return NULL.
852 *
853 * - If reading is not set, clear sha1 and return the name of the last
854 * reference name in the chain, which will either be a non-symbolic
855 * reference or an undefined reference. If this is a prelude to
856 * "writing" to the ref, the return value is the name of the ref
857 * that will actually be created or changed.
858 *
859 * If flag is non-NULL, set the value that it points to the
860 * combination of REF_ISPACKED (if the reference was found among the
861 * packed references) and REF_ISSYMREF (if the initial reference was a
862 * symbolic reference).
863 *
864 * If ref is not a properly-formatted, normalized reference, return
865 * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
866 * give up and return NULL.
867 *
868 * errno is sometimes set on errors, but not always.
869 */
8cad4744 870extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
96ec7b1e 871extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
7cb36842 872
e86eb666 873extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 874extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
431b1969 875extern int interpret_branch_name(const char *str, struct strbuf *);
619a644d 876extern int get_sha1_mb(const char *str, unsigned char *sha1);
e86eb666 877
79803322
SP
878extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
879extern const char *ref_rev_parse_rules[];
dd621df9 880#define ref_fetch_rules ref_rev_parse_rules
79803322 881
8b5157e4 882extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 883extern int validate_headref(const char *ref);
e83c5163 884
958ba6c9 885extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
0ab9e1e8 886extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 887extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
b60e188c 888extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
e83c5163 889
40469ee9 890extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 891 const char *required_type,
40469ee9
JH
892 unsigned long *size,
893 unsigned char *sha1_ret);
f4913f91 894
81776315
JH
895extern struct object *peel_to_type(const char *name, int namelen,
896 struct object *o, enum object_type);
897
73013afd
JH
898enum date_mode {
899 DATE_NORMAL = 0,
900 DATE_RELATIVE,
901 DATE_SHORT,
902 DATE_LOCAL,
903 DATE_ISO8601,
7dff9b30
LT
904 DATE_RFC2822,
905 DATE_RAW
73013afd
JH
906};
907
f8493ec0 908const char *show_date(unsigned long time, int timezone, enum date_mode mode);
7d29afd4
JN
909void show_date_relative(unsigned long time, int tz, const struct timeval *now,
910 struct strbuf *timebuf);
2a39064c 911int parse_date(const char *date, char *buf, int bufsize);
9644c061 912int parse_date_basic(const char *date, unsigned long *timestamp, int *offset);
3d27b9b0 913int parse_expiry_date(const char *date, unsigned long *timestamp);
ecee9d9e 914void datestamp(char *buf, int bufsize);
93cfa7c7
JH
915#define approxidate(s) approxidate_careful((s), NULL)
916unsigned long approxidate_careful(const char *, int *);
33012fc4 917unsigned long approxidate_relative(const char *date, const struct timeval *now);
856665f8 918enum date_mode parse_date_format(const char *format);
ecee9d9e 919
f9bc573f 920#define IDENT_STRICT 1
b9f0ac17 921#define IDENT_NO_DATE 2
c15e1987 922#define IDENT_NO_NAME 4
749be728
JH
923extern const char *git_author_info(int);
924extern const char *git_committer_info(int);
798123af 925extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
d9ccfe77 926extern const char *fmt_name(const char *name, const char *email);
bcb2b004 927extern const char *ident_default_email(void);
44fcb497 928extern const char *git_editor(void);
64778d24 929extern const char *git_pager(int stdout_is_tty);
9597921b 930extern int git_ident_config(const char *, const char *, void *);
6aa33f40 931
4b340cfa
JH
932struct ident_split {
933 const char *name_begin;
934 const char *name_end;
935 const char *mail_begin;
936 const char *mail_end;
937 const char *date_begin;
938 const char *date_end;
939 const char *tz_begin;
940 const char *tz_end;
941};
942/*
943 * Signals an success with 0, but time part of the result may be NULL
944 * if the input lacks timestamp and zone
945 */
946extern int split_ident_line(struct ident_split *, const char *, int);
947
12dccc16
LT
948struct checkout {
949 const char *base_dir;
950 int base_dir_len;
951 unsigned force:1,
952 quiet:1,
953 not_new:1,
954 refresh_cache:1;
955};
956
efbc5831 957extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
b9fd2846
LT
958
959struct cache_def {
960 char path[PATH_MAX + 1];
961 int len;
962 int flags;
963 int track_flags;
964 int prefix_len_stat_func;
965};
966
57199892 967extern int has_symlink_leading_path(const char *name, int len);
b9fd2846 968extern int threaded_has_symlink_leading_path(struct cache_def *, const char *, int);
f66caaf9 969extern int check_leading_path(const char *name, int len);
57199892 970extern int has_dirs_only_path(const char *name, int len, int prefix_len);
78478927
KB
971extern void schedule_dir_for_removal(const char *name, int len);
972extern void remove_scheduled_dirs(void);
12dccc16 973
9a217f2a 974extern struct alternate_object_database {
d5a63b99 975 struct alternate_object_database *next;
9a217f2a 976 char *name;
8f1d2e6f 977 char base[FLEX_ARRAY]; /* more */
d5a63b99 978} *alt_odb_list;
9a217f2a 979extern void prepare_alt_odb(void);
5e73633d 980extern void read_info_alternates(const char * relative_base, int depth);
bef70b22 981extern void add_to_alternates_file(const char *reference);
d79796bc
JH
982typedef int alt_odb_fn(struct alternate_object_database *, void *);
983extern void foreach_alt_odb(alt_odb_fn, void*);
9a217f2a 984
c41ee586
SP
985struct pack_window {
986 struct pack_window *next;
987 unsigned char *base;
988 off_t offset;
989 size_t len;
990 unsigned int last_used;
991 unsigned int inuse_cnt;
992};
993
9a217f2a
JH
994extern struct packed_git {
995 struct packed_git *next;
c41ee586 996 struct pack_window *windows;
2dc3a234 997 off_t pack_size;
57059091
NP
998 const void *index_data;
999 size_t index_size;
1000 uint32_t num_objects;
8eca0b47
NP
1001 uint32_t num_bad_objects;
1002 unsigned char *bad_object_sha1;
42873078 1003 int index_version;
57059091 1004 time_t mtime;
9bc879c1 1005 int pack_fd;
8d25931d 1006 unsigned pack_local:1,
d131b7af
SP
1007 pack_keep:1,
1008 do_not_close:1;
bf592c50 1009 unsigned char sha1[20];
8f1d2e6f
JH
1010 /* something like ".git/objects/pack/xxxxx.pack" */
1011 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 1012} *packed_git;
f3bf9224
JH
1013
1014struct pack_entry {
c4001d92 1015 off_t offset;
f3bf9224
JH
1016 unsigned char sha1[20];
1017 struct packed_git *p;
1018};
1019
d1c133f5
LT
1020struct ref {
1021 struct ref *next;
1022 unsigned char old_sha1[20];
1023 unsigned char new_sha1[20];
be885d96 1024 char *symref;
8c5f6f71
CR
1025 unsigned int
1026 force:1,
5ece083f 1027 forced_update:1,
f2db854d
JH
1028 deletion:1,
1029 matched:1;
900f2814
JK
1030
1031 /*
1032 * Order is important here, as we write to FETCH_HEAD
1033 * in numeric order. And the default NOT_FOR_MERGE
1034 * should be 0, so that xcalloc'd structures get it
1035 * by default.
1036 */
1037 enum {
1038 FETCH_HEAD_MERGE = -1,
1039 FETCH_HEAD_NOT_FOR_MERGE = 0,
1040 FETCH_HEAD_IGNORE = 1
1041 } fetch_head_status;
1042
8736a848
JK
1043 enum {
1044 REF_STATUS_NONE = 0,
1045 REF_STATUS_OK,
1046 REF_STATUS_REJECT_NONFASTFORWARD,
dbfeddb1 1047 REF_STATUS_REJECT_ALREADY_EXISTS,
8736a848 1048 REF_STATUS_REJECT_NODELETE,
75e5c0dc
JH
1049 REF_STATUS_REJECT_FETCH_FIRST,
1050 REF_STATUS_REJECT_NEEDS_FORCE,
8736a848 1051 REF_STATUS_UPTODATE,
ca74c458 1052 REF_STATUS_REMOTE_REJECT,
4b05548f 1053 REF_STATUS_EXPECTING_REPORT
8736a848 1054 } status;
2a0fe89a 1055 char *remote_status;
f88395ac 1056 struct ref *peer_ref; /* when renaming */
8f1d2e6f 1057 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
1058};
1059
2718ff09
LT
1060#define REF_NORMAL (1u << 0)
1061#define REF_HEADS (1u << 1)
1062#define REF_TAGS (1u << 2)
1063
5483f799 1064extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
cda69f48 1065
7841ce79 1066#define CONNECT_VERBOSE (1u << 0)
4577370e 1067extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
98158e9c 1068extern int finish_connect(struct child_process *conn);
7ffe853b 1069extern int git_connection_is_socket(struct child_process *conn);
40c155ff
JH
1070struct extra_have_objects {
1071 int nr, alloc;
1072 unsigned char (*array)[20];
1073};
85edf4f5
JK
1074extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
1075 struct ref **list, unsigned int flags,
1076 struct extra_have_objects *);
211b5f9e 1077extern int server_supports(const char *feature);
94427108
JK
1078extern int parse_feature_request(const char *features, const char *feature);
1079extern const char *server_feature_value(const char *feature, int *len_ret);
1080extern const char *parse_feature_value(const char *feature_list, const char *feature, int *len_ret);
f7192598 1081
7b64469a 1082extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
bf592c50 1083
543c5caa
NTND
1084/* A hook for count-objects to report invalid files in pack directory */
1085extern void (*report_garbage)(const char *desc, const char *path);
1086
9a217f2a 1087extern void prepare_packed_git(void);
fc04c412 1088extern void reprepare_packed_git(void);
bf592c50
DB
1089extern void install_packed_git(struct packed_git *pack);
1090
a6080a0a 1091extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
1092 struct packed_git *packs);
1093
276bc2ca 1094extern void pack_report(void);
d079837e 1095extern int open_pack_index(struct packed_git *);
fa5fc15d 1096extern void close_pack_index(struct packed_git *);
ef49a7a0 1097extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
c9ced051 1098extern void close_pack_windows(struct packed_git *);
03e79c88 1099extern void unuse_pack(struct pack_window **);
c74faea1 1100extern void free_pack_by_name(const char *);
3d20c636 1101extern void clear_delta_base_cache(void);
42873078 1102extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 1103extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
99093238 1104extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t);
c4001d92 1105extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
4c080182 1106extern int is_pack_valid(struct packed_git *);
c4001d92 1107extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
09ded04b 1108extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 1109extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
f8c8abc5 1110extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
9a217f2a 1111
9a490590
JH
1112struct object_info {
1113 /* Request */
1114 unsigned long *sizep;
1115
1116 /* Response */
1117 enum {
1118 OI_CACHED,
1119 OI_LOOSE,
5266d369
JH
1120 OI_PACKED,
1121 OI_DBCACHED
9a490590
JH
1122 } whence;
1123 union {
1124 /*
1125 * struct {
1126 * ... Nothing to expose in this case
1127 * } cached;
1128 * struct {
1129 * ... Nothing to expose in this case
1130 * } loose;
1131 */
1132 struct {
1133 struct packed_git *pack;
1134 off_t offset;
1135 unsigned int is_delta;
1136 } packed;
1137 } u;
1138};
1139extern int sha1_object_info_extended(const unsigned char *, struct object_info *);
9a217f2a 1140
8f3f9b09
JH
1141/* Dumb servers support */
1142extern int update_server_info(int);
1143
7a397419
MG
1144/* git_config_parse_key() returns these negated: */
1145#define CONFIG_INVALID_KEY 1
1146#define CONFIG_NO_SECTION_OR_NAME 2
1147/* git_config_set(), git_config_set_multivar() return the above or these: */
1148#define CONFIG_NO_LOCK -1
1149#define CONFIG_INVALID_FILE 3
1150#define CONFIG_NO_WRITE 4
1151#define CONFIG_NOTHING_SET 5
1152#define CONFIG_INVALID_PATTERN 6
9409c7a5 1153#define CONFIG_GENERIC_ERROR 7
7a397419 1154
ef90d6d4
JS
1155typedef int (*config_fn_t)(const char *, const char *, void *);
1156extern int git_default_config(const char *, const char *, void *);
1157extern int git_config_from_file(config_fn_t fn, const char *, void *);
2b64fc89 1158extern void git_config_push_parameter(const char *text);
b3d83d9f 1159extern int git_config_from_parameters(config_fn_t fn, void *data);
ef90d6d4 1160extern int git_config(config_fn_t fn, void *);
9b25a0b5
JK
1161extern int git_config_with_options(config_fn_t fn, void *,
1162 const char *filename, int respect_includes);
dbdf5854 1163extern int git_config_early(config_fn_t fn, void *, const char *repo_config);
0b87b6e0 1164extern int git_parse_ulong(const char *, unsigned long *);
17712991 1165extern int git_config_int(const char *, const char *);
0b87b6e0 1166extern unsigned long git_config_ulong(const char *, const char *);
a53f2ec6 1167extern int git_config_bool_or_int(const char *, const char *, int *);
17712991 1168extern int git_config_bool(const char *, const char *);
8420ccd8 1169extern int git_config_maybe_bool(const char *, const char *);
ea5105a5 1170extern int git_config_string(const char **, const char *, const char *);
395de250 1171extern int git_config_pathname(const char **, const char *, const char *);
5ec31182 1172extern int git_config_set_in_file(const char *, const char *, const char *);
10bea152 1173extern int git_config_set(const char *, const char *);
b09c53a3 1174extern int git_config_parse_key(const char *, char **, int *);
4ddba79d 1175extern int git_config_set_multivar(const char *, const char *, const char *, int);
5ec31182 1176extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
0667fcfb 1177extern int git_config_rename_section(const char *, const char *);
42bd39b5 1178extern int git_config_rename_section_in_file(const char *, const char *, const char *);
506b17b1 1179extern const char *git_etc_gitconfig(void);
ef90d6d4 1180extern int check_repository_format_version(const char *var, const char *value, void *cb);
0ef37164 1181extern int git_env_bool(const char *, int);
ab88c363 1182extern int git_config_system(void);
40ea4ed9 1183extern int config_error_nonbool(const char *);
5ded807f 1184#if defined(__GNUC__) && ! defined(__clang__)
a469a101
JK
1185#define config_error_nonbool(s) (config_error_nonbool(s), -1)
1186#endif
a6fa5992
PN
1187extern const char *get_log_output_encoding(void);
1188extern const char *get_commit_output_encoding(void);
1189
2496844b
JK
1190extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
1191
9b25a0b5
JK
1192struct config_include_data {
1193 int depth;
1194 config_fn_t fn;
1195 void *data;
1196};
1197#define CONFIG_INCLUDE_INIT { 0 }
1198extern int git_config_include(const char *name, const char *value, void *data);
17712991 1199
1b86bbb0
JK
1200/*
1201 * Match and parse a config key of the form:
1202 *
1203 * section.(subsection.)?key
1204 *
1205 * (i.e., what gets handed to a config_fn_t). The caller provides the section;
1206 * we return -1 if it does not match, 0 otherwise. The subsection and key
1207 * out-parameters are filled by the function (and subsection is NULL if it is
1208 * missing).
1209 */
1210extern int parse_config_key(const char *var,
1211 const char *section,
1212 const char **subsection, int *subsection_len,
1213 const char **key);
1214
d6991cee
JK
1215extern int committer_ident_sufficiently_given(void);
1216extern int author_ident_sufficiently_given(void);
e1b10391 1217
1a8f2741 1218extern const char *git_commit_encoding;
3a55602e 1219extern const char *git_log_output_encoding;
d551a488 1220extern const char *git_mailmap_file;
08610900 1221extern const char *git_mailmap_blob;
4e72dcec 1222
06f59e9f
TT
1223/* IO helper functions */
1224extern void maybe_flush_or_die(FILE *, const char *);
f3123c4a 1225extern int copy_fd(int ifd, int ofd);
1468bd47 1226extern int copy_file(const char *dst, const char *src, int mode);
f7835a25 1227extern int copy_file_with_time(const char *dst, const char *src, int mode);
7230e6d0 1228extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 1229extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 1230extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
4c81b03e 1231extern void fsync_or_die(int fd, const char *);
ad897215 1232
2b7ca830
JM
1233extern ssize_t read_in_full(int fd, void *buf, size_t count);
1234extern ssize_t write_in_full(int fd, const void *buf, size_t count);
1235static inline ssize_t write_str_in_full(int fd, const char *str)
1236{
1237 return write_in_full(fd, str, strlen(str));
1238}
1239
f67b45f8
LT
1240/* pager.c */
1241extern void setup_pager(void);
872da32d 1242extern const char *pager_program;
6e9af863 1243extern int pager_in_use(void);
aa086eb8 1244extern int pager_use_color;
ad6c3739 1245extern int term_columns(void);
ec7ff5ba 1246extern int decimal_width(int);
4914c962 1247extern int check_pager_config(const char *cmd);
f67b45f8 1248
ee9601e6 1249extern const char *editor_program;
d3e7da89 1250extern const char *askpass_program;
dfb068be 1251extern const char *excludes_file;
4d87b9c5 1252
051308f6 1253/* base85 */
f9815772
JM
1254int decode_85(char *dst, const char *line, int linelen);
1255void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 1256
855419f7 1257/* alloc.c */
100c5f3b
LT
1258extern void *alloc_blob_node(void);
1259extern void *alloc_tree_node(void);
1260extern void *alloc_commit_node(void);
1261extern void *alloc_tag_node(void);
1262extern void *alloc_object_node(void);
855419f7
LT
1263extern void alloc_report(void);
1264
6ce4e61f 1265/* trace.c */
28bea9e5 1266__attribute__((format (printf, 1, 2)))
6ce4e61f 1267extern void trace_printf(const char *format, ...);
28bea9e5 1268__attribute__((format (printf, 2, 3)))
b319ce4c 1269extern void trace_argv_printf(const char **argv, const char *format, ...);
a9ca8a85 1270extern void trace_repo_setup(const char *prefix);
39bc5e46 1271extern int trace_want(const char *key);
94b3b374 1272extern void trace_strbuf(const char *key, const struct strbuf *buf);
6ce4e61f 1273
bbc30f99 1274void packet_trace_identity(const char *prog);
6ce4e61f 1275
b6ec1d61 1276/* add */
7ae02a30
AR
1277/*
1278 * return 0 if success, 1 - if addition of a file failed and
1279 * ADD_FILES_IGNORE_ERRORS was specified in flags
1280 */
1281int add_files_to_cache(const char *prefix, const char **pathspec, int flags);
b6ec1d61 1282
aecbf914
JH
1283/* diff.c */
1284extern int diff_auto_refresh_index;
1285
68faf689
JH
1286/* match-trees.c */
1287void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
85e51b78 1288void shift_tree_by(const unsigned char *, const unsigned char *, unsigned char *, const char *);
68faf689 1289
a9cc857a
JH
1290/*
1291 * whitespace rules.
1292 * used by both diff and apply
f4b05a49 1293 * last two digits are tab width
a9cc857a 1294 */
f4b05a49
JS
1295#define WS_BLANK_AT_EOL 0100
1296#define WS_SPACE_BEFORE_TAB 0200
1297#define WS_INDENT_WITH_NON_TAB 0400
1298#define WS_CR_AT_EOL 01000
1299#define WS_BLANK_AT_EOF 02000
1300#define WS_TAB_IN_INDENT 04000
aeb84b05 1301#define WS_TRAILING_SPACE (WS_BLANK_AT_EOL|WS_BLANK_AT_EOF)
f4b05a49
JS
1302#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB|8)
1303#define WS_TAB_WIDTH_MASK 077
cf1b7869
JH
1304extern unsigned whitespace_rule_cfg;
1305extern unsigned whitespace_rule(const char *);
1306extern unsigned parse_whitespace_rule(const char *);
8f8841e9
JH
1307extern unsigned ws_check(const char *line, int len, unsigned ws_rule);
1308extern void ws_check_emit(const char *line, int len, unsigned ws_rule, FILE *stream, const char *set, const char *reset, const char *ws);
c1795bb0 1309extern char *whitespace_error_string(unsigned ws);
d511bd33 1310extern void ws_fix_copy(struct strbuf *, const char *, int, unsigned, int *);
877f23cc 1311extern int ws_blank_line(const char *line, int len, unsigned ws_rule);
f4b05a49 1312#define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK)
a9cc857a 1313
ee425e46 1314/* ls-files */
0f64bfa9 1315int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix);
ee425e46
JH
1316void overlay_tree_on_cache(const char *tree_name, const char *prefix);
1317
94351118 1318char *alias_lookup(const char *alias);
0989fe96 1319int split_cmdline(char *cmdline, const char ***argv);
ad9ac6db
GB
1320/* Takes a negative value returned by split_cmdline */
1321const char *split_cmdline_strerror(int cmdline_errno);
94351118 1322
e37c1329
NTND
1323/* git.c */
1324struct startup_info {
a60645f9 1325 int have_repository;
f07d6a1a 1326 const char *prefix;
e37c1329
NTND
1327};
1328extern struct startup_info *startup_info;
1329
db699a8a
NTND
1330/* merge.c */
1331struct commit_list;
1332int try_merge_command(const char *strategy, size_t xopts_nr,
1333 const char **xopts, struct commit_list *common,
1334 const char *head_arg, struct commit_list *remotes);
1335int checkout_fast_forward(const unsigned char *from,
1336 const unsigned char *to,
1337 int overwrite_ignore);
1338
cac42b26 1339
38f865c2
JK
1340int sane_execvp(const char *file, char *const argv[]);
1341
38612532
MH
1342/*
1343 * A struct to encapsulate the concept of whether a file has changed
1344 * since we last checked it. This uses criteria similar to those used
1345 * for the index.
1346 */
1347struct stat_validity {
1348 struct stat_data *sd;
1349};
1350
1351void stat_validity_clear(struct stat_validity *sv);
1352
1353/*
1354 * Returns 1 if the path is a regular file (or a symlink to a regular
1355 * file) and matches the saved stat_validity, 0 otherwise. A missing
1356 * or inaccessible file is considered a match if the struct was just
1357 * initialized, or if the previous update found an inaccessible file.
1358 */
1359int stat_validity_check(struct stat_validity *sv, const char *path);
1360
1361/*
1362 * Update the stat_validity from a file opened at descriptor fd. If
1363 * the file is missing, inaccessible, or not a regular file, then
1364 * future calls to stat_validity_check will match iff one of those
1365 * conditions continues to be true.
1366 */
1367void stat_validity_update(struct stat_validity *sv, int fd);
1368
e83c5163 1369#endif /* CACHE_H */