src/repository.h

   1 /*
   2  * Copyright (C) 2009-2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_repository_h__
   8 #define INCLUDE_repository_h__
   9
  10 #include "git2/common.h"
  11 #include "git2/oid.h"
  12 #include "git2/odb.h"
  13 #include "git2/repository.h"
  14 #include "git2/object.h"
  15
  16 #include "index.h"
  17 #include "cache.h"
  18 #include "refs.h"
  19 #include "buffer.h"
  20 #include "odb.h"
  21 #include "attr.h"
  22 #include "strmap.h"
  23
  24 #define DOT_GIT ".git"
  25 #define GIT_DIR DOT_GIT "/"
  26 #define GIT_DIR_MODE 0755
  27 #define GIT_BARE_DIR_MODE 0777
  28
  29 /** Cvar cache identifiers */
  30 typedef enum {
  31         GIT_CVAR_AUTO_CRLF = 0, /* core.autocrlf */
  32         GIT_CVAR_EOL, /* core.eol */
  33         GIT_CVAR_CACHE_MAX
  34 } git_cvar_cached;
  35
  36 /**
  37  * CVAR value enumerations
  38  *
  39  * These are the values that are actually stored in the cvar cache, instead
  40  * of their string equivalents. These values are internal and symbolic;
  41  * make sure that none of them is set to `-1`, since that is the unique
  42  * identifier for "not cached"
  43  */
  44 typedef enum {
  45         /* The value hasn't been loaded from the cache yet */
  46         GIT_CVAR_NOT_CACHED = -1,
  47
  48         /* core.safecrlf: false, 'fail', 'warn' */
  49         GIT_SAFE_CRLF_FALSE = 0,
  50         GIT_SAFE_CRLF_FAIL = 1,
  51         GIT_SAFE_CRLF_WARN = 2,
  52
  53         /* core.autocrlf: false, true, 'input; */
  54         GIT_AUTO_CRLF_FALSE = 0,
  55         GIT_AUTO_CRLF_TRUE = 1,
  56         GIT_AUTO_CRLF_INPUT = 2,
  57         GIT_AUTO_CRLF_DEFAULT = GIT_AUTO_CRLF_FALSE,
  58
  59         /* core.eol: unset, 'crlf', 'lf', 'native' */
  60         GIT_EOL_UNSET = 0,
  61         GIT_EOL_CRLF = 1,
  62         GIT_EOL_LF = 2,
  63 #ifdef GIT_WIN32
  64         GIT_EOL_NATIVE = GIT_EOL_CRLF,
  65 #else
  66         GIT_EOL_NATIVE = GIT_EOL_LF,
  67 #endif
  68         GIT_EOL_DEFAULT = GIT_EOL_NATIVE
  69 } git_cvar_value;
  70
  71 /* internal repository init flags */
  72 enum {
  73         GIT_REPOSITORY_INIT__HAS_DOTGIT = (1u << 16),
  74         GIT_REPOSITORY_INIT__NATURAL_WD = (1u << 17),
  75         GIT_REPOSITORY_INIT__IS_REINIT  = (1u << 18),
  76 };
  77
  78
  79 /** Base git object for inheritance */
  80 struct git_object {
  81         git_cached_obj cached;
  82         git_repository *repo;
  83         git_otype type;
  84 };
  85
  86 /** Internal structure for repository object */
  87 struct git_repository {
  88         git_odb *_odb;
  89         git_config *_config;
  90         git_index *_index;
  91
  92         git_cache objects;
  93         git_refcache references;
  94         git_attr_cache attrcache;
  95         git_strmap *submodules;
  96
  97         char *path_repository;
  98         char *workdir;
  99
 100         unsigned is_bare:1;
 101         unsigned int lru_counter;
 102
 103         git_cvar_value cvar_cache[GIT_CVAR_CACHE_MAX];
 104 };
 105
 106 /* fully free the object; internal method, DO NOT EXPORT */
 107 void git_object__free(void *object);
 108
 109 GIT_INLINE(int) git_object__dup(git_object **dest, git_object *source)
 110 {
 111         git_cached_obj_incref(source);
 112         *dest = source;
 113         return 0;
 114 }
 115
 116 int git_object__resolve_to_type(git_object **obj, git_otype type);
 117
 118 int git_oid__parse(git_oid *oid, const char **buffer_out, const char *buffer_end, const char *header);
 119 void git_oid__writebuf(git_buf *buf, const char *header, const git_oid *oid);
 120
 121 GIT_INLINE(git_attr_cache *) git_repository_attr_cache(git_repository *repo)
 122 {
 123         return &repo->attrcache;
 124 }
 125
 126 int git_repository_head_tree(git_tree **tree, git_repository *repo);
 127
 128 /*
 129  * Weak pointers to repository internals.
 130  *
 131  * The returned pointers do not need to be freed. Do not keep
 132  * permanent references to these (i.e. between API calls), since they may
 133  * become invalidated if the user replaces a repository internal.
 134  */
 135 int git_repository_config__weakptr(git_config **out, git_repository *repo);
 136 int git_repository_odb__weakptr(git_odb **out, git_repository *repo);
 137 int git_repository_index__weakptr(git_index **out, git_repository *repo);
 138
 139 /*
 140  * CVAR cache
 141  *
 142  * Efficient access to the most used config variables of a repository.
 143  * The cache is cleared everytime the config backend is replaced.
 144  */
 145 int git_repository__cvar(int *out, git_repository *repo, git_cvar_cached cvar);
 146 void git_repository__cvar_cache_clear(git_repository *repo);
 147
 148 /*
 149  * Submodule cache
 150  */
 151 extern void git_submodule_config_free(git_repository *repo);
 152
 153 #endif