Andrew's git - gitweb.git/blob

   1/*
   2 * Copyright (C) 2005 Junio C Hamano
   3 */
   4#ifndef DIFF_H
   5#define DIFF_H
   6
   7#define DIFF_FILE_CANON_MODE(mode) \
   8        (S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
   9        S_ISLNK(mode) ? S_IFLNK : S_IFDIR)
  10
  11struct tree_desc {
  12        void *buf;
  13        unsigned long size;
  14};
  15
  16struct diff_options;
  17
  18typedef void (*change_fn_t)(struct diff_options *options,
  19                 unsigned old_mode, unsigned new_mode,
  20                 const unsigned char *old_sha1,
  21                 const unsigned char *new_sha1,
  22                 const char *base, const char *path);
  23
  24typedef void (*add_remove_fn_t)(struct diff_options *options,
  25                    int addremove, unsigned mode,
  26                    const unsigned char *sha1,
  27                    const char *base, const char *path);
  28
  29struct diff_options {
  30        const char **paths;
  31        const char *filter;
  32        const char *orderfile;
  33        const char *pickaxe;
  34        unsigned recursive:1,
  35                 tree_in_recursive:1,
  36                 full_index:1;
  37        int break_opt;
  38        int detect_rename;
  39        int find_copies_harder;
  40        int line_termination;
  41        int output_format;
  42        int pickaxe_opts;
  43        int rename_score;
  44        int reverse_diff;
  45        int rename_limit;
  46        int setup;
  47        int abbrev;
  48
  49        change_fn_t change;
  50        add_remove_fn_t add_remove;
  51};
  52
  53extern void diff_tree_setup_paths(const char **paths);
  54extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
  55                     const char *base, struct diff_options *opt);
  56extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
  57                          const char *base, struct diff_options *opt);
  58
  59struct combine_diff_path {
  60        struct combine_diff_path *next;
  61        int len;
  62        char *path;
  63        unsigned char sha1[20];
  64        unsigned char parent_sha1[FLEX_ARRAY][20];
  65};
  66
  67int show_combined_diff(struct combine_diff_path *elem, int num_parent,
  68                       int dense, const char *header, int show_empty);
  69
  70extern int diff_tree_combined_merge(const unsigned char *sha1, const char *, int, int);
  71
  72extern void diff_addremove(struct diff_options *,
  73                           int addremove,
  74                           unsigned mode,
  75                           const unsigned char *sha1,
  76                           const char *base,
  77                           const char *path);
  78
  79extern void diff_change(struct diff_options *,
  80                        unsigned mode1, unsigned mode2,
  81                        const unsigned char *sha1,
  82                        const unsigned char *sha2,
  83                        const char *base, const char *path);
  84
  85extern void diff_unmerge(struct diff_options *,
  86                         const char *path);
  87
  88extern int diff_scoreopt_parse(const char *opt);
  89
  90#define DIFF_SETUP_REVERSE              1
  91#define DIFF_SETUP_USE_CACHE            2
  92#define DIFF_SETUP_USE_SIZE_CACHE       4
  93
  94extern int git_diff_config(const char *var, const char *value);
  95extern void diff_setup(struct diff_options *);
  96extern int diff_opt_parse(struct diff_options *, const char **, int);
  97extern int diff_setup_done(struct diff_options *);
  98
  99#define DIFF_DETECT_RENAME      1
 100#define DIFF_DETECT_COPY        2
 101
 102#define DIFF_PICKAXE_ALL        1
 103
 104#define DIFF_DEFAULT_INDEX_ABBREV       7 /* hex digits */
 105#define DIFF_DEFAULT_ABBREV     7 /* hex digits */
 106
 107extern void diffcore_std(struct diff_options *);
 108
 109extern void diffcore_std_no_resolve(struct diff_options *);
 110
 111#define COMMON_DIFF_OPTIONS_HELP \
 112"\ncommon diff options:\n" \
 113"  -z            output diff-raw with lines terminated with NUL.\n" \
 114"  -p            output patch format.\n" \
 115"  -u            synonym for -p.\n" \
 116"  --name-only   show only names of changed files.\n" \
 117"  --name-status show names and status of changed files.\n" \
 118"  --full-index  show full object name on index lines.\n" \
 119"  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 120"  -R            swap input file pairs.\n" \
 121"  -B            detect complete rewrites.\n" \
 122"  -M            detect renames.\n" \
 123"  -C            detect copies.\n" \
 124"  --find-copies-harder\n" \
 125"                try unchanged files as candidate for copy detection.\n" \
 126"  -l<n>         limit rename attempts up to <n> paths.\n" \
 127"  -O<file>      reorder diffs according to the <file>.\n" \
 128"  -S<string>    find filepair whose only one side contains the string.\n" \
 129"  --pickaxe-all\n" \
 130"                show all files diff when -S is used and hit is found.\n"
 131
 132extern int diff_queue_is_empty(void);
 133
 134#define DIFF_FORMAT_RAW         1
 135#define DIFF_FORMAT_PATCH       2
 136#define DIFF_FORMAT_NO_OUTPUT   3
 137#define DIFF_FORMAT_NAME        4
 138#define DIFF_FORMAT_NAME_STATUS 5
 139
 140extern void diff_flush(struct diff_options*);
 141
 142/* diff-raw status letters */
 143#define DIFF_STATUS_ADDED               'A'
 144#define DIFF_STATUS_COPIED              'C'
 145#define DIFF_STATUS_DELETED             'D'
 146#define DIFF_STATUS_MODIFIED            'M'
 147#define DIFF_STATUS_RENAMED             'R'
 148#define DIFF_STATUS_TYPE_CHANGED        'T'
 149#define DIFF_STATUS_UNKNOWN             'X'
 150#define DIFF_STATUS_UNMERGED            'U'
 151
 152/* these are not diff-raw status letters proper, but used by
 153 * diffcore-filter insn to specify additional restrictions.
 154 */
 155#define DIFF_STATUS_FILTER_AON          '*'
 156#define DIFF_STATUS_FILTER_BROKEN       'B'
 157
 158extern const char *diff_unique_abbrev(const unsigned char *, int);
 159
 160#endif /* DIFF_H */