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
  16extern void update_tree_entry(struct tree_desc *);
  17extern const unsigned char *tree_entry_extract(struct tree_desc *, const char **, unsigned int *);
  18
  19struct diff_options;
  20
  21typedef void (*change_fn_t)(struct diff_options *options,
  22                 unsigned old_mode, unsigned new_mode,
  23                 const unsigned char *old_sha1,
  24                 const unsigned char *new_sha1,
  25                 const char *base, const char *path);
  26
  27typedef void (*add_remove_fn_t)(struct diff_options *options,
  28                    int addremove, unsigned mode,
  29                    const unsigned char *sha1,
  30                    const char *base, const char *path);
  31
  32struct diff_options {
  33        const char **paths;
  34        const char *filter;
  35        const char *orderfile;
  36        const char *pickaxe;
  37        unsigned recursive:1,
  38                 tree_in_recursive:1,
  39                 full_index:1;
  40        int break_opt;
  41        int detect_rename;
  42        int find_copies_harder;
  43        int line_termination;
  44        int output_format;
  45        int pickaxe_opts;
  46        int rename_score;
  47        int reverse_diff;
  48        int rename_limit;
  49        int setup;
  50        int abbrev;
  51
  52        change_fn_t change;
  53        add_remove_fn_t add_remove;
  54};
  55
  56extern void diff_tree_setup_paths(const char **paths);
  57extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
  58                     const char *base, struct diff_options *opt);
  59extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
  60                          const char *base, struct diff_options *opt);
  61
  62struct combine_diff_path {
  63        struct combine_diff_path *next;
  64        int len;
  65        char *path;
  66        unsigned int mode;
  67        unsigned char sha1[20];
  68        struct combine_diff_parent {
  69                unsigned int mode;
  70                unsigned char sha1[20];
  71        } parent[FLEX_ARRAY];
  72};
  73#define combine_diff_path_size(n, l) \
  74        (sizeof(struct combine_diff_path) + \
  75         sizeof(struct combine_diff_parent) * (n) + (l) + 1)
  76
  77extern int show_combined_diff(struct combine_diff_path *elem, int num_parent,
  78                              int dense, const char *header,
  79                              struct diff_options *);
  80
  81extern const char *diff_tree_combined_merge(const unsigned char *sha1, const char *, int, struct diff_options *opt);
  82
  83extern void diff_addremove(struct diff_options *,
  84                           int addremove,
  85                           unsigned mode,
  86                           const unsigned char *sha1,
  87                           const char *base,
  88                           const char *path);
  89
  90extern void diff_change(struct diff_options *,
  91                        unsigned mode1, unsigned mode2,
  92                        const unsigned char *sha1,
  93                        const unsigned char *sha2,
  94                        const char *base, const char *path);
  95
  96extern void diff_unmerge(struct diff_options *,
  97                         const char *path);
  98
  99extern int diff_scoreopt_parse(const char *opt);
 100
 101#define DIFF_SETUP_REVERSE              1
 102#define DIFF_SETUP_USE_CACHE            2
 103#define DIFF_SETUP_USE_SIZE_CACHE       4
 104
 105extern int git_diff_config(const char *var, const char *value);
 106extern void diff_setup(struct diff_options *);
 107extern int diff_opt_parse(struct diff_options *, const char **, int);
 108extern int diff_setup_done(struct diff_options *);
 109
 110#define DIFF_DETECT_RENAME      1
 111#define DIFF_DETECT_COPY        2
 112
 113#define DIFF_PICKAXE_ALL        1
 114
 115extern void diffcore_std(struct diff_options *);
 116
 117extern void diffcore_std_no_resolve(struct diff_options *);
 118
 119#define COMMON_DIFF_OPTIONS_HELP \
 120"\ncommon diff options:\n" \
 121"  -z            output diff-raw with lines terminated with NUL.\n" \
 122"  -p            output patch format.\n" \
 123"  -u            synonym for -p.\n" \
 124"  --name-only   show only names of changed files.\n" \
 125"  --name-status show names and status of changed files.\n" \
 126"  --full-index  show full object name on index lines.\n" \
 127"  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 128"  -R            swap input file pairs.\n" \
 129"  -B            detect complete rewrites.\n" \
 130"  -M            detect renames.\n" \
 131"  -C            detect copies.\n" \
 132"  --find-copies-harder\n" \
 133"                try unchanged files as candidate for copy detection.\n" \
 134"  -l<n>         limit rename attempts up to <n> paths.\n" \
 135"  -O<file>      reorder diffs according to the <file>.\n" \
 136"  -S<string>    find filepair whose only one side contains the string.\n" \
 137"  --pickaxe-all\n" \
 138"                show all files diff when -S is used and hit is found.\n"
 139
 140extern int diff_queue_is_empty(void);
 141
 142#define DIFF_FORMAT_RAW         1
 143#define DIFF_FORMAT_PATCH       2
 144#define DIFF_FORMAT_NO_OUTPUT   3
 145#define DIFF_FORMAT_NAME        4
 146#define DIFF_FORMAT_NAME_STATUS 5
 147
 148extern void diff_flush(struct diff_options*);
 149
 150/* diff-raw status letters */
 151#define DIFF_STATUS_ADDED               'A'
 152#define DIFF_STATUS_COPIED              'C'
 153#define DIFF_STATUS_DELETED             'D'
 154#define DIFF_STATUS_MODIFIED            'M'
 155#define DIFF_STATUS_RENAMED             'R'
 156#define DIFF_STATUS_TYPE_CHANGED        'T'
 157#define DIFF_STATUS_UNKNOWN             'X'
 158#define DIFF_STATUS_UNMERGED            'U'
 159
 160/* these are not diff-raw status letters proper, but used by
 161 * diffcore-filter insn to specify additional restrictions.
 162 */
 163#define DIFF_STATUS_FILTER_AON          '*'
 164#define DIFF_STATUS_FILTER_BROKEN       'B'
 165
 166extern const char *diff_unique_abbrev(const unsigned char *, int);
 167
 168#endif /* DIFF_H */