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Add "const" qualifier to "char *editor_program".
[thirdparty/git.git] / cache.h
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1#ifndef CACHE_H
2#define CACHE_H
3
4#include "git-compat-util.h"
5#include "strbuf.h"
6
7#include SHA1_HEADER
8#include <zlib.h>
9
10#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200
11#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
12#endif
13
14#if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT)
15#define DTYPE(de) ((de)->d_type)
16#else
17#undef DT_UNKNOWN
18#undef DT_DIR
19#undef DT_REG
20#undef DT_LNK
21#define DT_UNKNOWN 0
22#define DT_DIR 1
23#define DT_REG 2
24#define DT_LNK 3
25#define DTYPE(de) DT_UNKNOWN
26#endif
27
28/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */
29#define S_IFINVALID 0030000
30
31/*
32 * A "directory link" is a link to another git directory.
33 *
34 * The value 0160000 is not normally a valid mode, and
35 * also just happens to be S_IFDIR + S_IFLNK
36 *
37 * NOTE! We *really* shouldn't depend on the S_IFxxx macros
38 * always having the same values everywhere. We should use
39 * our internal git values for these things, and then we can
40 * translate that to the OS-specific value. It just so
41 * happens that everybody shares the same bit representation
42 * in the UNIX world (and apparently wider too..)
43 */
44#define S_IFGITLINK 0160000
45#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK)
46
47/*
48 * Intensive research over the course of many years has shown that
49 * port 9418 is totally unused by anything else. Or
50 *
51 * Your search - "port 9418" - did not match any documents.
52 *
53 * as www.google.com puts it.
54 *
55 * This port has been properly assigned for git use by IANA:
56 * git (Assigned-9418) [I06-050728-0001].
57 *
58 * git 9418/tcp git pack transfer service
59 * git 9418/udp git pack transfer service
60 *
61 * with Linus Torvalds <torvalds@osdl.org> as the point of
62 * contact. September 2005.
63 *
64 * See http://www.iana.org/assignments/port-numbers
65 */
66#define DEFAULT_GIT_PORT 9418
67
68/*
69 * Basic data structures for the directory cache
70 */
71
72#define CACHE_SIGNATURE 0x44495243 /* "DIRC" */
73struct cache_header {
74 unsigned int hdr_signature;
75 unsigned int hdr_version;
76 unsigned int hdr_entries;
77};
78
79/*
80 * The "cache_time" is just the low 32 bits of the
81 * time. It doesn't matter if it overflows - we only
82 * check it for equality in the 32 bits we save.
83 */
84struct cache_time {
85 unsigned int sec;
86 unsigned int nsec;
87};
88
89/*
90 * dev/ino/uid/gid/size are also just tracked to the low 32 bits
91 * Again - this is just a (very strong in practice) heuristic that
92 * the inode hasn't changed.
93 *
94 * We save the fields in big-endian order to allow using the
95 * index file over NFS transparently.
96 */
97struct cache_entry {
98 struct cache_time ce_ctime;
99 struct cache_time ce_mtime;
100 unsigned int ce_dev;
101 unsigned int ce_ino;
102 unsigned int ce_mode;
103 unsigned int ce_uid;
104 unsigned int ce_gid;
105 unsigned int ce_size;
106 unsigned char sha1[20];
107 unsigned short ce_flags;
108 char name[FLEX_ARRAY]; /* more */
109};
110
111#define CE_NAMEMASK (0x0fff)
112#define CE_STAGEMASK (0x3000)
113#define CE_UPDATE (0x4000)
114#define CE_VALID (0x8000)
115#define CE_STAGESHIFT 12
116
117#define create_ce_flags(len, stage) htons((len) | ((stage) << CE_STAGESHIFT))
118#define ce_namelen(ce) (CE_NAMEMASK & ntohs((ce)->ce_flags))
119#define ce_size(ce) cache_entry_size(ce_namelen(ce))
120#define ce_stage(ce) ((CE_STAGEMASK & ntohs((ce)->ce_flags)) >> CE_STAGESHIFT)
121
122#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
123static inline unsigned int create_ce_mode(unsigned int mode)
124{
125 if (S_ISLNK(mode))
126 return htonl(S_IFLNK);
127 if (S_ISDIR(mode) || S_ISGITLINK(mode))
128 return htonl(S_IFGITLINK);
129 return htonl(S_IFREG | ce_permissions(mode));
130}
131static inline unsigned int ce_mode_from_stat(struct cache_entry *ce, unsigned int mode)
132{
133 extern int trust_executable_bit, has_symlinks;
134 if (!has_symlinks && S_ISREG(mode) &&
135 ce && S_ISLNK(ntohl(ce->ce_mode)))
136 return ce->ce_mode;
137 if (!trust_executable_bit && S_ISREG(mode)) {
138 if (ce && S_ISREG(ntohl(ce->ce_mode)))
139 return ce->ce_mode;
140 return create_ce_mode(0666);
141 }
142 return create_ce_mode(mode);
143}
144#define canon_mode(mode) \
145 (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
146 S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
147
148#define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
149
150struct index_state {
151 struct cache_entry **cache;
152 unsigned int cache_nr, cache_alloc, cache_changed;
153 struct cache_tree *cache_tree;
154 time_t timestamp;
155 void *mmap;
156 size_t mmap_size;
157};
158
159extern struct index_state the_index;
160
161#ifndef NO_THE_INDEX_COMPATIBILITY_MACROS
162#define active_cache (the_index.cache)
163#define active_nr (the_index.cache_nr)
164#define active_alloc (the_index.cache_alloc)
165#define active_cache_changed (the_index.cache_changed)
166#define active_cache_tree (the_index.cache_tree)
167
168#define read_cache() read_index(&the_index)
169#define read_cache_from(path) read_index_from(&the_index, (path))
170#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
171#define discard_cache() discard_index(&the_index)
172#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
173#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
174#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
175#define remove_file_from_cache(path) remove_file_from_index(&the_index, (path))
176#define add_file_to_cache(path, verbose) add_file_to_index(&the_index, (path), (verbose))
177#define refresh_cache(flags) refresh_index(&the_index, (flags), NULL, NULL)
178#define ce_match_stat(ce, st, options) ie_match_stat(&the_index, (ce), (st), (options))
179#define ce_modified(ce, st, options) ie_modified(&the_index, (ce), (st), (options))
180#endif
181
182enum object_type {
183 OBJ_BAD = -1,
184 OBJ_NONE = 0,
185 OBJ_COMMIT = 1,
186 OBJ_TREE = 2,
187 OBJ_BLOB = 3,
188 OBJ_TAG = 4,
189 /* 5 for future expansion */
190 OBJ_OFS_DELTA = 6,
191 OBJ_REF_DELTA = 7,
192 OBJ_MAX,
193};
194
195static inline enum object_type object_type(unsigned int mode)
196{
197 return S_ISDIR(mode) ? OBJ_TREE :
198 S_ISGITLINK(mode) ? OBJ_COMMIT :
199 OBJ_BLOB;
200}
201
202#define GIT_DIR_ENVIRONMENT "GIT_DIR"
203#define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE"
204#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
205#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
206#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
207#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
208#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
209#define CONFIG_ENVIRONMENT "GIT_CONFIG"
210#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
211#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
212#define GITATTRIBUTES_FILE ".gitattributes"
213#define INFOATTRIBUTES_FILE "info/attributes"
214#define ATTRIBUTE_MACRO_PREFIX "[attr]"
215
216extern int is_bare_repository_cfg;
217extern int is_bare_repository(void);
218extern int is_inside_git_dir(void);
219extern char *git_work_tree_cfg;
220extern int is_inside_work_tree(void);
221extern const char *get_git_dir(void);
222extern char *get_object_directory(void);
223extern char *get_refs_directory(void);
224extern char *get_index_file(void);
225extern char *get_graft_file(void);
226extern int set_git_dir(const char *path);
227extern const char *get_git_work_tree(void);
228
229#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
230
231extern const char **get_pathspec(const char *prefix, const char **pathspec);
232extern void setup_work_tree(void);
233extern const char *setup_git_directory_gently(int *);
234extern const char *setup_git_directory(void);
235extern const char *prefix_path(const char *prefix, int len, const char *path);
236extern const char *prefix_filename(const char *prefix, int len, const char *path);
237extern void verify_filename(const char *prefix, const char *name);
238extern void verify_non_filename(const char *prefix, const char *name);
239
240#define alloc_nr(x) (((x)+16)*3/2)
241
242/*
243 * Realloc the buffer pointed at by variable 'x' so that it can hold
244 * at least 'nr' entries; the number of entries currently allocated
245 * is 'alloc', using the standard growing factor alloc_nr() macro.
246 *
247 * DO NOT USE any expression with side-effect for 'x' or 'alloc'.
248 */
249#define ALLOC_GROW(x, nr, alloc) \
250 do { \
251 if ((nr) > alloc) { \
252 if (alloc_nr(alloc) < (nr)) \
253 alloc = (nr); \
254 else \
255 alloc = alloc_nr(alloc); \
256 x = xrealloc((x), alloc * sizeof(*(x))); \
257 } \
258 } while(0)
259
260/* Initialize and use the cache information */
261extern int read_index(struct index_state *);
262extern int read_index_from(struct index_state *, const char *path);
263extern int write_index(struct index_state *, int newfd);
264extern int discard_index(struct index_state *);
265extern int verify_path(const char *path);
266extern int index_name_pos(struct index_state *, const char *name, int namelen);
267#define ADD_CACHE_OK_TO_ADD 1 /* Ok to add */
268#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
269#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
270#define ADD_CACHE_JUST_APPEND 8 /* Append only; tree.c::read_tree() */
271extern int add_index_entry(struct index_state *, struct cache_entry *ce, int option);
272extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
273extern int remove_index_entry_at(struct index_state *, int pos);
274extern int remove_file_from_index(struct index_state *, const char *path);
275extern int add_file_to_index(struct index_state *, const char *path, int verbose);
276extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
277extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
278
279/* do stat comparison even if CE_VALID is true */
280#define CE_MATCH_IGNORE_VALID 01
281/* do not check the contents but report dirty on racily-clean entries */
282#define CE_MATCH_RACY_IS_DIRTY 02
283extern int ie_match_stat(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
284extern int ie_modified(struct index_state *, struct cache_entry *, struct stat *, unsigned int);
285
286extern int ce_path_match(const struct cache_entry *ce, const char **pathspec);
287extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path);
288extern int index_pipe(unsigned char *sha1, int fd, const char *type, int write_object);
289extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object);
290extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
291
292#define REFRESH_REALLY 0x0001 /* ignore_valid */
293#define REFRESH_UNMERGED 0x0002 /* allow unmerged */
294#define REFRESH_QUIET 0x0004 /* be quiet about it */
295#define REFRESH_IGNORE_MISSING 0x0008 /* ignore non-existent */
296extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
297
298struct lock_file {
299 struct lock_file *next;
300 int fd;
301 pid_t owner;
302 char on_list;
303 char filename[PATH_MAX];
304};
305extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
306extern int commit_lock_file(struct lock_file *);
307
308extern int hold_locked_index(struct lock_file *, int);
309extern int commit_locked_index(struct lock_file *);
310extern void set_alternate_index_output(const char *);
311extern int close_lock_file(struct lock_file *);
312extern void rollback_lock_file(struct lock_file *);
313extern int delete_ref(const char *, const unsigned char *sha1);
314
315/* Environment bits from configuration mechanism */
316extern int trust_executable_bit;
317extern int quote_path_fully;
318extern int has_symlinks;
319extern int assume_unchanged;
320extern int prefer_symlink_refs;
321extern int log_all_ref_updates;
322extern int warn_ambiguous_refs;
323extern int shared_repository;
324extern const char *apply_default_whitespace;
325extern int zlib_compression_level;
326extern int core_compression_level;
327extern int core_compression_seen;
328extern size_t packed_git_window_size;
329extern size_t packed_git_limit;
330extern size_t delta_base_cache_limit;
331extern int auto_crlf;
332
333#define GIT_REPO_VERSION 0
334extern int repository_format_version;
335extern int check_repository_format(void);
336
337#define MTIME_CHANGED 0x0001
338#define CTIME_CHANGED 0x0002
339#define OWNER_CHANGED 0x0004
340#define MODE_CHANGED 0x0008
341#define INODE_CHANGED 0x0010
342#define DATA_CHANGED 0x0020
343#define TYPE_CHANGED 0x0040
344
345/* Return a statically allocated filename matching the sha1 signature */
346extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
347extern char *git_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
348extern char *sha1_file_name(const unsigned char *sha1);
349extern char *sha1_pack_name(const unsigned char *sha1);
350extern char *sha1_pack_index_name(const unsigned char *sha1);
351extern const char *find_unique_abbrev(const unsigned char *sha1, int);
352extern const unsigned char null_sha1[20];
353static inline int is_null_sha1(const unsigned char *sha1)
354{
355 return !memcmp(sha1, null_sha1, 20);
356}
357static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
358{
359 return memcmp(sha1, sha2, 20);
360}
361static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src)
362{
363 memcpy(sha_dst, sha_src, 20);
364}
365static inline void hashclr(unsigned char *hash)
366{
367 memset(hash, 0, 20);
368}
369
370int git_mkstemp(char *path, size_t n, const char *template);
371
372enum sharedrepo {
373 PERM_UMASK = 0,
374 PERM_GROUP,
375 PERM_EVERYBODY
376};
377int git_config_perm(const char *var, const char *value);
378int adjust_shared_perm(const char *path);
379int safe_create_leading_directories(char *path);
380char *enter_repo(char *path, int strict);
381static inline int is_absolute_path(const char *path)
382{
383 return path[0] == '/';
384}
385const char *make_absolute_path(const char *path);
386
387/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
388extern int sha1_object_info(const unsigned char *, unsigned long *);
389extern void * read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size);
390extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1);
391extern int write_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *return_sha1);
392extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *);
393
394extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type);
395
396extern int write_sha1_from_fd(const unsigned char *sha1, int fd, char *buffer,
397 size_t bufsize, size_t *bufposn);
398extern int write_sha1_to_fd(int fd, const unsigned char *sha1);
399extern int move_temp_to_file(const char *tmpfile, const char *filename);
400
401extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
402extern int has_sha1_file(const unsigned char *sha1);
403
404extern int has_pack_file(const unsigned char *sha1);
405extern int has_pack_index(const unsigned char *sha1);
406
407extern const signed char hexval_table[256];
408static inline unsigned int hexval(unsigned char c)
409{
410 return hexval_table[c];
411}
412
413/* Convert to/from hex/sha1 representation */
414#define MINIMUM_ABBREV 4
415#define DEFAULT_ABBREV 7
416
417extern int get_sha1(const char *str, unsigned char *sha1);
418extern int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode);
419extern int get_sha1_hex(const char *hex, unsigned char *sha1);
420extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
421extern int read_ref(const char *filename, unsigned char *sha1);
422extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
423extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
424extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
425
426extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
427extern const char *ref_rev_parse_rules[];
428extern const char *ref_fetch_rules[];
429
430extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
431extern int validate_headref(const char *ref);
432
433extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
434extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
435
436extern void *read_object_with_reference(const unsigned char *sha1,
437 const char *required_type,
438 unsigned long *size,
439 unsigned char *sha1_ret);
440
441enum date_mode {
442 DATE_NORMAL = 0,
443 DATE_RELATIVE,
444 DATE_SHORT,
445 DATE_LOCAL,
446 DATE_ISO8601,
447 DATE_RFC2822
448};
449
450const char *show_date(unsigned long time, int timezone, enum date_mode mode);
451int parse_date(const char *date, char *buf, int bufsize);
452void datestamp(char *buf, int bufsize);
453unsigned long approxidate(const char *);
454enum date_mode parse_date_format(const char *format);
455
456#define IDENT_WARN_ON_NO_NAME 1
457#define IDENT_ERROR_ON_NO_NAME 2
458#define IDENT_NO_DATE 4
459extern const char *git_author_info(int);
460extern const char *git_committer_info(int);
461extern const char *fmt_ident(const char *name, const char *email, const char *date_str, int);
462extern const char *fmt_name(const char *name, const char *email);
463
464struct checkout {
465 const char *base_dir;
466 int base_dir_len;
467 unsigned force:1,
468 quiet:1,
469 not_new:1,
470 refresh_cache:1;
471};
472
473extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
474extern int has_symlink_leading_path(const char *name, char *last_symlink);
475
476extern struct alternate_object_database {
477 struct alternate_object_database *next;
478 char *name;
479 char base[FLEX_ARRAY]; /* more */
480} *alt_odb_list;
481extern void prepare_alt_odb(void);
482
483struct pack_window {
484 struct pack_window *next;
485 unsigned char *base;
486 off_t offset;
487 size_t len;
488 unsigned int last_used;
489 unsigned int inuse_cnt;
490};
491
492extern struct packed_git {
493 struct packed_git *next;
494 struct pack_window *windows;
495 off_t pack_size;
496 const void *index_data;
497 size_t index_size;
498 uint32_t num_objects;
499 int index_version;
500 time_t mtime;
501 int pack_fd;
502 int pack_local;
503 unsigned char sha1[20];
504 /* something like ".git/objects/pack/xxxxx.pack" */
505 char pack_name[FLEX_ARRAY]; /* more */
506} *packed_git;
507
508struct pack_entry {
509 off_t offset;
510 unsigned char sha1[20];
511 struct packed_git *p;
512};
513
514struct ref {
515 struct ref *next;
516 unsigned char old_sha1[20];
517 unsigned char new_sha1[20];
518 unsigned int force:1,
519 merge:1,
520 nonfastforward:1,
521 deletion:1;
522 enum {
523 REF_STATUS_NONE = 0,
524 REF_STATUS_OK,
525 REF_STATUS_REJECT_NONFASTFORWARD,
526 REF_STATUS_REJECT_NODELETE,
527 REF_STATUS_UPTODATE,
528 REF_STATUS_REMOTE_REJECT,
529 REF_STATUS_EXPECTING_REPORT,
530 } status;
531 char *remote_status;
532 struct ref *peer_ref; /* when renaming */
533 char name[FLEX_ARRAY]; /* more */
534};
535
536#define REF_NORMAL (1u << 0)
537#define REF_HEADS (1u << 1)
538#define REF_TAGS (1u << 2)
539
540extern struct ref *find_ref_by_name(struct ref *list, const char *name);
541
542#define CONNECT_VERBOSE (1u << 0)
543extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
544extern int finish_connect(struct child_process *conn);
545extern int path_match(const char *path, int nr, char **match);
546extern int get_ack(int fd, unsigned char *result_sha1);
547extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
548extern int server_supports(const char *feature);
549
550extern struct packed_git *parse_pack_index(unsigned char *sha1);
551extern struct packed_git *parse_pack_index_file(const unsigned char *sha1,
552 const char *idx_path);
553
554extern void prepare_packed_git(void);
555extern void reprepare_packed_git(void);
556extern void install_packed_git(struct packed_git *pack);
557
558extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
559 struct packed_git *packs);
560
561extern void pack_report(void);
562extern int open_pack_index(struct packed_git *);
563extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
564extern void close_pack_windows(struct packed_git *);
565extern void unuse_pack(struct pack_window **);
566extern struct packed_git *add_packed_git(const char *, int, int);
567extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);
568extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *);
569extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
570extern unsigned long unpack_object_header_gently(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
571extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
572extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *);
573extern int matches_pack_name(struct packed_git *p, const char *name);
574
575/* Dumb servers support */
576extern int update_server_info(int);
577
578typedef int (*config_fn_t)(const char *, const char *);
579extern int git_default_config(const char *, const char *);
580extern int git_config_from_file(config_fn_t fn, const char *);
581extern int git_config(config_fn_t fn);
582extern int git_parse_long(const char *, long *);
583extern int git_parse_ulong(const char *, unsigned long *);
584extern int git_config_int(const char *, const char *);
585extern unsigned long git_config_ulong(const char *, const char *);
586extern int git_config_bool(const char *, const char *);
587extern int git_config_string(const char **, const char *, const char *);
588extern int git_config_set(const char *, const char *);
589extern int git_config_set_multivar(const char *, const char *, const char *, int);
590extern int git_config_rename_section(const char *, const char *);
591extern const char *git_etc_gitconfig(void);
592extern int check_repository_format_version(const char *var, const char *value);
593extern int config_error_nonbool(const char *);
594
595#define MAX_GITNAME (1000)
596extern char git_default_email[MAX_GITNAME];
597extern char git_default_name[MAX_GITNAME];
598
599extern const char *git_commit_encoding;
600extern const char *git_log_output_encoding;
601
602/* IO helper functions */
603extern void maybe_flush_or_die(FILE *, const char *);
604extern int copy_fd(int ifd, int ofd);
605extern int read_in_full(int fd, void *buf, size_t count);
606extern int write_in_full(int fd, const void *buf, size_t count);
607extern void write_or_die(int fd, const void *buf, size_t count);
608extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
609extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
610
611/* pager.c */
612extern void setup_pager(void);
613extern const char *pager_program;
614extern int pager_in_use(void);
615extern int pager_use_color;
616
617extern const char *editor_program;
618extern char *excludes_file;
619
620/* base85 */
621int decode_85(char *dst, const char *line, int linelen);
622void encode_85(char *buf, const unsigned char *data, int bytes);
623
624/* alloc.c */
625extern void *alloc_blob_node(void);
626extern void *alloc_tree_node(void);
627extern void *alloc_commit_node(void);
628extern void *alloc_tag_node(void);
629extern void *alloc_object_node(void);
630extern void alloc_report(void);
631
632/* trace.c */
633extern void trace_printf(const char *format, ...);
634extern void trace_argv_printf(const char **argv, const char *format, ...);
635
636/* convert.c */
637/* returns 1 if *dst was used */
638extern int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst);
639extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
640
641/* add */
642void add_files_to_cache(int verbose, const char *prefix, const char **pathspec);
643
644/* diff.c */
645extern int diff_auto_refresh_index;
646
647/* match-trees.c */
648void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
649
650/*
651 * whitespace rules.
652 * used by both diff and apply
653 */
654#define WS_TRAILING_SPACE 01
655#define WS_SPACE_BEFORE_TAB 02
656#define WS_INDENT_WITH_NON_TAB 04
657#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
658extern unsigned whitespace_rule_cfg;
659extern unsigned whitespace_rule(const char *);
660extern unsigned parse_whitespace_rule(const char *);
661extern unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule,
662 FILE *stream, const char *set,
663 const char *reset, const char *ws);
664extern char *whitespace_error_string(unsigned ws);
665
666/* ls-files */
667int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
668int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
669void overlay_tree_on_cache(const char *tree_name, const char *prefix);
670
671#endif /* CACHE_H */
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