Use diff -u instead of diff in t7201
[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"
e83c5163 7
cef661fc 8#include SHA1_HEADER
e83c5163
LT
9#include <zlib.h>
10
609a2289 11#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
9da3acfb
ET
12#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
13#endif
14
962554c6 15#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
b6829693
ET
16#define DTYPE(de) ((de)->d_type)
17#else
0bdd79af
JH
18#undef DT_UNKNOWN
19#undef DT_DIR
20#undef DT_REG
21#undef DT_LNK
b6829693
ET
22#define DT_UNKNOWN 0
23#define DT_DIR 1
24#define DT_REG 2
a15c1c60 25#define DT_LNK 3
b6829693
ET
26#define DTYPE(de) DT_UNKNOWN
27#endif
28
40689ae1
MK
29/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
30#define S_IFINVALID 0030000
31
9eec4795
LT
32/*
33 * A "directory link" is a link to another git directory.
34 *
35 * The value 0160000 is not normally a valid mode, and
36 * also just happens to be S_IFDIR + S_IFLNK
37 *
38 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
39 * always having the same values everywhere. We should use
40 * our internal git values for these things, and then we can
41 * translate that to the OS-specific value. It just so
42 * happens that everybody shares the same bit representation
43 * in the UNIX world (and apparently wider too..)
44 */
302b9282
MW
45#define S_IFGITLINK 0160000
46#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
9eec4795 47
2386d658
LT
48/*
49 * Intensive research over the course of many years has shown that
50 * port 9418 is totally unused by anything else. Or
51 *
52 * Your search - "port 9418" - did not match any documents.
53 *
54 * as www.google.com puts it.
ba8a4970
LT
55 *
56 * This port has been properly assigned for git use by IANA:
57 * git (Assigned-9418) [I06-050728-0001].
58 *
59 * git 9418/tcp git pack transfer service
60 * git 9418/udp git pack transfer service
61 *
62 * with Linus Torvalds <torvalds@osdl.org> as the point of
63 * contact. September 2005.
64 *
65 * See http://www.iana.org/assignments/port-numbers
2386d658
LT
66 */
67#define DEFAULT_GIT_PORT 9418
68
e83c5163
LT
69/*
70 * Basic data structures for the directory cache
e83c5163
LT
71 */
72
73#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
74struct cache_header {
ccc4feb5
LT
75 unsigned int hdr_signature;
76 unsigned int hdr_version;
77 unsigned int hdr_entries;
e83c5163
LT
78};
79
80/*
81 * The "cache_time" is just the low 32 bits of the
82 * time. It doesn't matter if it overflows - we only
83 * check it for equality in the 32 bits we save.
84 */
85struct cache_time {
86 unsigned int sec;
87 unsigned int nsec;
88};
89
90/*
91 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
92 * Again - this is just a (very strong in practice) heuristic that
93 * the inode hasn't changed.
ccc4feb5
LT
94 *
95 * We save the fields in big-endian order to allow using the
96 * index file over NFS transparently.
e83c5163 97 */
7a51ed66
LT
98struct ondisk_cache_entry {
99 struct cache_time ctime;
100 struct cache_time mtime;
101 unsigned int dev;
102 unsigned int ino;
103 unsigned int mode;
104 unsigned int uid;
105 unsigned int gid;
106 unsigned int size;
107 unsigned char sha1[20];
108 unsigned short flags;
109 char name[FLEX_ARRAY]; /* more */
110};
111
e83c5163 112struct cache_entry {
cf558704 113 struct cache_entry *next;
7a51ed66
LT
114 unsigned int ce_ctime;
115 unsigned int ce_mtime;
ccc4feb5
LT
116 unsigned int ce_dev;
117 unsigned int ce_ino;
118 unsigned int ce_mode;
119 unsigned int ce_uid;
120 unsigned int ce_gid;
121 unsigned int ce_size;
7a51ed66 122 unsigned int ce_flags;
e83c5163 123 unsigned char sha1[20];
8f1d2e6f 124 char name[FLEX_ARRAY]; /* more */
e83c5163
LT
125};
126
95fd5bf8
LT
127#define CE_NAMEMASK (0x0fff)
128#define CE_STAGEMASK (0x3000)
5f73076c 129#define CE_VALID (0x8000)
aee46198 130#define CE_STAGESHIFT 12
95fd5bf8 131
7a51ed66
LT
132/* In-memory only */
133#define CE_UPDATE (0x10000)
134#define CE_REMOVE (0x20000)
eadb5831 135#define CE_UPTODATE (0x40000)
cf558704 136#define CE_UNHASHED (0x80000)
7a51ed66 137
7fec10b7
JH
138static inline unsigned create_ce_flags(size_t len, unsigned stage)
139{
140 if (len >= CE_NAMEMASK)
141 len = CE_NAMEMASK;
142 return (len | (stage << CE_STAGESHIFT));
143}
144
145static inline size_t ce_namelen(const struct cache_entry *ce)
146{
147 size_t len = ce->ce_flags & CE_NAMEMASK;
148 if (len < CE_NAMEMASK)
149 return len;
150 return strlen(ce->name + CE_NAMEMASK) + CE_NAMEMASK;
151}
152
aee46198 153#define ce_size(ce) cache_entry_size(ce_namelen(ce))
7a51ed66
LT
154#define ondisk_ce_size(ce) ondisk_cache_entry_size(ce_namelen(ce))
155#define ce_stage(ce) ((CE_STAGEMASK & (ce)->ce_flags) >> CE_STAGESHIFT)
eadb5831
JH
156#define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
157#define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
aee46198 158
e4479470 159#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
8ae0a8c5
KS
160static inline unsigned int create_ce_mode(unsigned int mode)
161{
8ae0a8c5 162 if (S_ISLNK(mode))
7a51ed66 163 return S_IFLNK;
302b9282 164 if (S_ISDIR(mode) || S_ISGITLINK(mode))
7a51ed66
LT
165 return S_IFGITLINK;
166 return S_IFREG | ce_permissions(mode);
8ae0a8c5 167}
185c975f
JH
168static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
169{
78a8d641
JS
170 extern int trust_executable_bit, has_symlinks;
171 if (!has_symlinks && S_ISREG(mode) &&
7a51ed66 172 ce && S_ISLNK(ce->ce_mode))
78a8d641 173 return ce->ce_mode;
185c975f 174 if (!trust_executable_bit && S_ISREG(mode)) {
7a51ed66 175 if (ce && S_ISREG(ce->ce_mode))
185c975f
JH
176 return ce->ce_mode;
177 return create_ce_mode(0666);
178 }
179 return create_ce_mode(mode);
180}
1b0c7174
JH
181#define canon_mode(mode) \
182 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
302b9282 183 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
e4479470 184
aee46198 185#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
7a51ed66 186#define ondisk_cache_entry_size(len) ((offsetof(struct ondisk_cache_entry,name) + (len) + 8) & ~7)
f5cabd13 187
228e94f9
JH
188struct index_state {
189 struct cache_entry **cache;
190 unsigned int cache_nr, cache_alloc, cache_changed;
191 struct cache_tree *cache_tree;
192 time_t timestamp;
7a51ed66 193 void *alloc;
9cb76b8c 194 unsigned name_hash_initialized : 1;
cf558704 195 struct hash_table name_hash;
228e94f9
JH
196};
197
198extern struct index_state the_index;
199
4aab5b46 200#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
228e94f9
JH
201#define active_cache (the_index.cache)
202#define active_nr (the_index.cache_nr)
203#define active_alloc (the_index.cache_alloc)
204#define active_cache_changed (the_index.cache_changed)
205#define active_cache_tree (the_index.cache_tree)
e83c5163 206
4aab5b46
JH
207#define read_cache() read_index(&the_index)
208#define read_cache_from(path) read_index_from(&the_index, (path))
209#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
210#define discard_cache() discard_index(&the_index)
211#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
212#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
213#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
214#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
215#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
d616813d 216#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL)
4bd5b7da
JH
217#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
218#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
cf558704 219#define cache_name_exists(name, namelen) index_name_exists(&the_index, (name), (namelen))
4aab5b46 220#endif
e83c5163 221
edaec3fb
JH
222enum object_type {
223 OBJ_BAD = -1,
224 OBJ_NONE = 0,
225 OBJ_COMMIT = 1,
226 OBJ_TREE = 2,
227 OBJ_BLOB = 3,
228 OBJ_TAG = 4,
229 /* 5 for future expansion */
230 OBJ_OFS_DELTA = 6,
231 OBJ_REF_DELTA = 7,
232 OBJ_MAX,
233};
234
b45563a2
JH
235static inline enum object_type object_type(unsigned int mode)
236{
237 return S_ISDIR(mode) ? OBJ_TREE :
238 S_ISGITLINK(mode) ? OBJ_COMMIT :
239 OBJ_BLOB;
240}
241
8ac069ac 242#define GIT_DIR_ENVIRONMENT "GIT_DIR"
892c41b9 243#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
8ac069ac 244#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
d19938ab 245#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
bb233d69 246#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
5da5c8f4 247#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
d4ebc36c
JH
248#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
249#define CONFIG_ENVIRONMENT "GIT_CONFIG"
250#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
251#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
d0bfd026
JH
252#define GITATTRIBUTES_FILE ".gitattributes"
253#define INFOATTRIBUTES_FILE "info/attributes"
f48fd688 254#define ATTRIBUTE_MACRO_PREFIX "[attr]"
bb233d69 255
7d1864ce
JH
256extern int is_bare_repository_cfg;
257extern int is_bare_repository(void);
68025633 258extern int is_inside_git_dir(void);
e90fdc39 259extern char *git_work_tree_cfg;
892c41b9 260extern int is_inside_work_tree(void);
c5fba16c 261extern const char *get_git_dir(void);
8ac069ac 262extern char *get_object_directory(void);
95fc7512 263extern char *get_refs_directory(void);
8ac069ac 264extern char *get_index_file(void);
5da5c8f4 265extern char *get_graft_file(void);
d7ac12b2 266extern int set_git_dir(const char *path);
e90fdc39 267extern const char *get_git_work_tree(void);
8ac069ac
JH
268
269#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
bb233d69 270
6b5ee137 271extern const char **get_pathspec(const char *prefix, const char **pathspec);
59f0f2f3 272extern void setup_work_tree(void);
4ca06608 273extern const char *setup_git_directory_gently(int *);
d288a700 274extern const char *setup_git_directory(void);
6b5ee137 275extern const char *prefix_path(const char *prefix, int len, const char *path);
4ca06608 276extern const char *prefix_filename(const char *prefix, int len, const char *path);
e23d0b4a 277extern void verify_filename(const char *prefix, const char *name);
ea92f41f 278extern void verify_non_filename(const char *prefix, const char *name);
d288a700 279
e83c5163
LT
280#define alloc_nr(x) (((x)+16)*3/2)
281
6815e569
JK
282/*
283 * Realloc the buffer pointed at by variable 'x' so that it can hold
284 * at least 'nr' entries; the number of entries currently allocated
285 * is 'alloc', using the standard growing factor alloc_nr() macro.
286 *
287 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
288 */
289#define ALLOC_GROW(x, nr, alloc) \
290 do { \
c927e6c6 291 if ((nr) > alloc) { \
4234a761
JH
292 if (alloc_nr(alloc) < (nr)) \
293 alloc = (nr); \
294 else \
295 alloc = alloc_nr(alloc); \
6815e569
JK
296 x = xrealloc((x), alloc * sizeof(*(x))); \
297 } \
298 } while(0)
299
734aab75 300/* Initialize and use the cache information */
4aab5b46
JH
301extern int read_index(struct index_state *);
302extern int read_index_from(struct index_state *, const char *path);
303extern int write_index(struct index_state *, int newfd);
304extern int discard_index(struct index_state *);
8dcf39c4 305extern int verify_path(const char *path);
cf558704 306extern int index_name_exists(struct index_state *istate, const char *name, int namelen);
4aab5b46 307extern int index_name_pos(struct index_state *, const char *name, int namelen);
192268c1
JH
308#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
309#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
b155725d 310#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
af3785dc 311#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
4aab5b46 312extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
8fd2cb40 313extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
4aab5b46
JH
314extern int remove_index_entry_at(struct index_state *, int pos);
315extern int remove_file_from_index(struct index_state *, const char *path);
316extern int add_file_to_index(struct index_state *, const char *path, int verbose);
6640f881 317extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
dbbce55b 318extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
4bd5b7da
JH
319
320/* do stat comparison even if CE_VALID is true */
321#define CE_MATCH_IGNORE_VALID 01
322/* do not check the contents but report dirty on racily-clean entries */
323#define CE_MATCH_RACY_IS_DIRTY 02
324extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
325extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
326
c0fd1f51 327extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
53bca91a 328extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
024510c8 329extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
ec1fcc16 330extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
415e96c8
JH
331extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
332
405e5b2f
LT
333#define REFRESH_REALLY 0x0001 /* ignore_valid */
334#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
335#define REFRESH_QUIET 0x0004 /* be quiet about it */
336#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
d616813d 337extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
405e5b2f 338
021b6e45
JH
339struct lock_file {
340 struct lock_file *next;
4723ee99 341 int fd;
5e635e39 342 pid_t owner;
1084b845 343 char on_list;
021b6e45 344 char filename[PATH_MAX];
415e96c8 345};
40aaae88 346extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
021b6e45 347extern int commit_lock_file(struct lock_file *);
30ca07a2
JH
348
349extern int hold_locked_index(struct lock_file *, int);
350extern int commit_locked_index(struct lock_file *);
5e7f56ac 351extern void set_alternate_index_output(const char *);
d6cf61bf 352extern int close_lock_file(struct lock_file *);
021b6e45 353extern void rollback_lock_file(struct lock_file *);
1401f46b 354extern int delete_ref(const char *, const unsigned char *sha1);
734aab75 355
2ae1c53b 356/* Environment bits from configuration mechanism */
17712991 357extern int trust_executable_bit;
9378c161 358extern int quote_path_fully;
78a8d641 359extern int has_symlinks;
5f73076c 360extern int assume_unchanged;
9f0bb90d 361extern int prefer_symlink_refs;
6de08ae6 362extern int log_all_ref_updates;
2f8acdb3 363extern int warn_ambiguous_refs;
457f06d6 364extern int shared_repository;
2ae1c53b 365extern const char *apply_default_whitespace;
12f6c308 366extern int zlib_compression_level;
960ccca6
DH
367extern int core_compression_level;
368extern int core_compression_seen;
60bb8b14 369extern size_t packed_git_window_size;
77ccc5bb 370extern size_t packed_git_limit;
18bdec11 371extern size_t delta_base_cache_limit;
6c510bee 372extern int auto_crlf;
17712991 373
ab9cb76f
JH
374#define GIT_REPO_VERSION 0
375extern int repository_format_version;
376extern int check_repository_format(void);
377
734aab75
LT
378#define MTIME_CHANGED 0x0001
379#define CTIME_CHANGED 0x0002
380#define OWNER_CHANGED 0x0004
381#define MODE_CHANGED 0x0008
382#define INODE_CHANGED 0x0010
383#define DATA_CHANGED 0x0020
8ae0a8c5 384#define TYPE_CHANGED 0x0040
e83c5163
LT
385
386/* Return a statically allocated filename matching the sha1 signature */
4ec99bf0
TS
387extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
388extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
73134b6d 389extern char *sha1_file_name(const unsigned char *sha1);
bf592c50
DB
390extern char *sha1_pack_name(const unsigned char *sha1);
391extern char *sha1_pack_index_name(const unsigned char *sha1);
013f276e 392extern const char *find_unique_abbrev(const unsigned char *sha1, int);
88cd621d 393extern const unsigned char null_sha1[20];
0bef57ee
DR
394static inline int is_null_sha1(const unsigned char *sha1)
395{
396 return !memcmp(sha1, null_sha1, 20);
397}
a89fccd2
DR
398static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
399{
400 return memcmp(sha1, sha2, 20);
401}
e702496e
SP
402static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
403{
404 memcpy(sha_dst, sha_src, 20);
405}
a8e0d16d
JH
406static inline void hashclr(unsigned char *hash)
407{
408 memset(hash, 0, 20);
409}
e83c5163 410
f2db68ed
HE
411int git_mkstemp(char *path, size_t n, const char *template);
412
94df2506
JH
413enum sharedrepo {
414 PERM_UMASK = 0,
415 PERM_GROUP,
416 PERM_EVERYBODY
417};
418int git_config_perm(const char *var, const char *value);
457f06d6 419int adjust_shared_perm(const char *path);
b2cb9425 420int safe_create_leading_directories(char *path);
bd22c904 421char *enter_repo(char *path, int strict);
e5392c51
JS
422static inline int is_absolute_path(const char *path)
423{
424 return path[0] == '/';
425}
426const char *make_absolute_path(const char *path);
b2cb9425 427
e83c5163 428/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
21666f1a 429extern int sha1_object_info(const unsigned char *, unsigned long *);
21666f1a 430extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
ce9fbf16 431extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
bf0f910d 432extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
21666f1a 433extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
8237b185 434
5d6ccf5c 435extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
e83c5163 436
70b9829e
DB
437extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
438 size_t bufsize, size_t *bufposn);
a5eda52b 439extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
839837b9 440extern int move_temp_to_file(const char *tmpfile, const char *filename);
8237b185 441
106d710b 442extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
8237b185
DB
443extern int has_sha1_file(const unsigned char *sha1);
444
bf592c50
DB
445extern int has_pack_file(const unsigned char *sha1);
446extern int has_pack_index(const unsigned char *sha1);
447
192a6be2
LT
448extern const signed char hexval_table[256];
449static inline unsigned int hexval(unsigned char c)
e49521b5
JH
450{
451 return hexval_table[c];
452}
453
e83c5163 454/* Convert to/from hex/sha1 representation */
46a6c262
JH
455#define MINIMUM_ABBREV 4
456#define DEFAULT_ABBREV 7
457
3c249c95 458extern int get_sha1(const char *str, unsigned char *sha1);
a0cd87a5 459extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
197ee8c9
LT
460extern int get_sha1_hex(const char *hex, unsigned char *sha1);
461extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
ca8db142 462extern int read_ref(const char *filename, unsigned char *sha1);
8da19775 463extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
e86eb666 464extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
eb3a4822 465extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
e86eb666 466
79803322
SP
467extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
468extern const char *ref_rev_parse_rules[];
605b4978 469extern const char *ref_fetch_rules[];
79803322 470
8b5157e4 471extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
c847f537 472extern int validate_headref(const char *ref);
e83c5163 473
958ba6c9 474extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
79517a06 475extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
e83c5163 476
40469ee9 477extern void *read_object_with_reference(const unsigned char *sha1,
bf0f910d 478 const char *required_type,
40469ee9
JH
479 unsigned long *size,
480 unsigned char *sha1_ret);
f4913f91 481
73013afd
JH
482enum date_mode {
483 DATE_NORMAL = 0,
484 DATE_RELATIVE,
485 DATE_SHORT,
486 DATE_LOCAL,
487 DATE_ISO8601,
488 DATE_RFC2822
489};
490
f8493ec0 491const char *show_date(unsigned long time, int timezone, enum date_mode mode);
2a39064c 492int parse_date(const char *date, char *buf, int bufsize);
ecee9d9e 493void datestamp(char *buf, int bufsize);
3c07b1d1 494unsigned long approxidate(const char *);
856665f8 495enum date_mode parse_date_format(const char *format);
ecee9d9e 496
774751a8
JH
497#define IDENT_WARN_ON_NO_NAME 1
498#define IDENT_ERROR_ON_NO_NAME 2
499#define IDENT_NO_DATE 4
749be728
JH
500extern const char *git_author_info(int);
501extern const char *git_committer_info(int);
798123af 502extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
d9ccfe77 503extern const char *fmt_name(const char *name, const char *email);
6aa33f40 504
12dccc16
LT
505struct checkout {
506 const char *base_dir;
507 int base_dir_len;
508 unsigned force:1,
509 quiet:1,
510 not_new:1,
511 refresh_cache:1;
512};
513
efbc5831 514extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
f859c846 515extern int has_symlink_leading_path(const char *name, char *last_symlink);
12dccc16 516
9a217f2a 517extern struct alternate_object_database {
d5a63b99 518 struct alternate_object_database *next;
9a217f2a 519 char *name;
8f1d2e6f 520 char base[FLEX_ARRAY]; /* more */
d5a63b99 521} *alt_odb_list;
9a217f2a
JH
522extern void prepare_alt_odb(void);
523
c41ee586
SP
524struct pack_window {
525 struct pack_window *next;
526 unsigned char *base;
527 off_t offset;
528 size_t len;
529 unsigned int last_used;
530 unsigned int inuse_cnt;
531};
532
9a217f2a
JH
533extern struct packed_git {
534 struct packed_git *next;
c41ee586 535 struct pack_window *windows;
2dc3a234 536 off_t pack_size;
57059091
NP
537 const void *index_data;
538 size_t index_size;
539 uint32_t num_objects;
42873078 540 int index_version;
57059091 541 time_t mtime;
9bc879c1 542 int pack_fd;
9d835df2 543 int pack_local;
bf592c50 544 unsigned char sha1[20];
8f1d2e6f
JH
545 /* something like ".git/objects/pack/xxxxx.pack" */
546 char pack_name[FLEX_ARRAY]; /* more */
9a217f2a 547} *packed_git;
f3bf9224
JH
548
549struct pack_entry {
c4001d92 550 off_t offset;
f3bf9224
JH
551 unsigned char sha1[20];
552 struct packed_git *p;
553};
554
d1c133f5
LT
555struct ref {
556 struct ref *next;
557 unsigned char old_sha1[20];
558 unsigned char new_sha1[20];
9f8a15c7
SP
559 unsigned int force:1,
560 merge:1,
561 nonfastforward:1,
562 deletion:1;
8736a848
JK
563 enum {
564 REF_STATUS_NONE = 0,
565 REF_STATUS_OK,
566 REF_STATUS_REJECT_NONFASTFORWARD,
567 REF_STATUS_REJECT_NODELETE,
568 REF_STATUS_UPTODATE,
ca74c458 569 REF_STATUS_REMOTE_REJECT,
2a0fe89a 570 REF_STATUS_EXPECTING_REPORT,
8736a848 571 } status;
2a0fe89a 572 char *remote_status;
f88395ac 573 struct ref *peer_ref; /* when renaming */
8f1d2e6f 574 char name[FLEX_ARRAY]; /* more */
d1c133f5
LT
575};
576
2718ff09
LT
577#define REF_NORMAL (1u << 0)
578#define REF_HEADS (1u << 1)
579#define REF_TAGS (1u << 2)
580
cda69f48
JK
581extern struct ref *find_ref_by_name(struct ref *list, const char *name);
582
7841ce79 583#define CONNECT_VERBOSE (1u << 0)
4577370e 584extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
98158e9c 585extern int finish_connect(struct child_process *conn);
013e7c7f 586extern int path_match(const char *path, int nr, char **match);
41cb7488 587extern int get_ack(int fd, unsigned char *result_sha1);
2718ff09 588extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
211b5f9e 589extern int server_supports(const char *feature);
f7192598 590
bf592c50 591extern struct packed_git *parse_pack_index(unsigned char *sha1);
2ab141a2 592extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
42873078 593 const char *idx_path);
bf592c50 594
9a217f2a 595extern void prepare_packed_git(void);
fc04c412 596extern void reprepare_packed_git(void);
bf592c50
DB
597extern void install_packed_git(struct packed_git *pack);
598
a6080a0a 599extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
bf592c50
DB
600 struct packed_git *packs);
601
276bc2ca 602extern void pack_report(void);
d079837e 603extern int open_pack_index(struct packed_git *);
c4001d92 604extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
c9ced051 605extern void close_pack_windows(struct packed_git *);
03e79c88 606extern void unuse_pack(struct pack_window **);
42873078 607extern struct packed_git *add_packed_git(const char *, int, int);
d079837e 608extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
c4001d92
SP
609extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
610extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
72518e9c 611extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
54dab52a 612extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
c4001d92 613extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
000dfd3f 614extern int matches_pack_name(struct packed_git *p, const char *name);
9a217f2a 615
8f3f9b09
JH
616/* Dumb servers support */
617extern int update_server_info(int);
618
17712991
LT
619typedef int (*config_fn_t)(const char *, const char *);
620extern int git_default_config(const char *, const char *);
4f629539 621extern int git_config_from_file(config_fn_t fn, const char *);
17712991 622extern int git_config(config_fn_t fn);
0b87b6e0
BD
623extern int git_parse_long(const char *, long *);
624extern int git_parse_ulong(const char *, unsigned long *);
17712991 625extern int git_config_int(const char *, const char *);
0b87b6e0 626extern unsigned long git_config_ulong(const char *, const char *);
17712991 627extern int git_config_bool(const char *, const char *);
10bea152 628extern int git_config_set(const char *, const char *);
4ddba79d 629extern int git_config_set_multivar(const char *, const char *, const char *, int);
0667fcfb 630extern int git_config_rename_section(const char *, const char *);
506b17b1 631extern const char *git_etc_gitconfig(void);
ab9cb76f 632extern int check_repository_format_version(const char *var, const char *value);
17712991 633
e1b10391
LT
634#define MAX_GITNAME (1000)
635extern char git_default_email[MAX_GITNAME];
636extern char git_default_name[MAX_GITNAME];
637
1a8f2741 638extern const char *git_commit_encoding;
3a55602e 639extern const char *git_log_output_encoding;
4e72dcec 640
06f59e9f
TT
641/* IO helper functions */
642extern void maybe_flush_or_die(FILE *, const char *);
f3123c4a 643extern int copy_fd(int ifd, int ofd);
93d26e4c 644extern int read_in_full(int fd, void *buf, size_t count);
e0814056 645extern int write_in_full(int fd, const void *buf, size_t count);
7230e6d0 646extern void write_or_die(int fd, const void *buf, size_t count);
6ce4e61f 647extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
e0814056 648extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
ad897215 649
f67b45f8
LT
650/* pager.c */
651extern void setup_pager(void);
54adf370 652extern char *pager_program;
6e9af863 653extern int pager_in_use(void);
aa086eb8 654extern int pager_use_color;
f67b45f8 655
4d87b9c5 656extern char *editor_program;
039bc64e 657extern char *excludes_file;
4d87b9c5 658
051308f6 659/* base85 */
f9815772
JM
660int decode_85(char *dst, const char *line, int linelen);
661void encode_85(char *buf, const unsigned char *data, int bytes);
051308f6 662
855419f7 663/* alloc.c */
100c5f3b
LT
664extern void *alloc_blob_node(void);
665extern void *alloc_tree_node(void);
666extern void *alloc_commit_node(void);
667extern void *alloc_tag_node(void);
668extern void *alloc_object_node(void);
855419f7
LT
669extern void alloc_report(void);
670
6ce4e61f 671/* trace.c */
6ce4e61f 672extern void trace_printf(const char *format, ...);
b319ce4c 673extern void trace_argv_printf(const char **argv, const char *format, ...);
6ce4e61f 674
6c510bee 675/* convert.c */
5ecd293d
PH
676/* returns 1 if *dst was used */
677extern int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst);
678extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
6c510bee 679
b6ec1d61
JH
680/* add */
681void add_files_to_cache(int verbose, const char *prefix, const char **pathspec);
682
aecbf914
JH
683/* diff.c */
684extern int diff_auto_refresh_index;
685
68faf689
JH
686/* match-trees.c */
687void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
688
a9cc857a
JH
689/*
690 * whitespace rules.
691 * used by both diff and apply
692 */
693#define WS_TRAILING_SPACE 01
694#define WS_SPACE_BEFORE_TAB 02
459fa6d0 695#define WS_INDENT_WITH_NON_TAB 04
a9cc857a 696#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
cf1b7869
JH
697extern unsigned whitespace_rule_cfg;
698extern unsigned whitespace_rule(const char *);
699extern unsigned parse_whitespace_rule(const char *);
c1795bb0
WC
700extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
701 FILE *stream, const char *set,
702 const char *reset, const char *ws);
703extern char *whitespace_error_string(unsigned ws);
a9cc857a 704
ee425e46
JH
705/* ls-files */
706int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
707int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
708void overlay_tree_on_cache(const char *tree_name, const char *prefix);
709
e83c5163 710#endif /* CACHE_H */