diff.h

   1 /*
   2  * Copyright (C) 2005 Junio C Hamano
   3  */
   4 #ifndef DIFF_H
   5 #define DIFF_H
   6
   7 #include "tree-walk.h"
   8
   9 struct rev_info;
  10 struct diff_options;
  11
  12 typedef void (*change_fn_t)(struct diff_options *options,
  13                  unsigned old_mode, unsigned new_mode,
  14                  const unsigned char *old_sha1,
  15                  const unsigned char *new_sha1,
  16                  const char *base, const char *path);
  17
  18 typedef void (*add_remove_fn_t)(struct diff_options *options,
  19                     int addremove, unsigned mode,
  20                     const unsigned char *sha1,
  21                     const char *base, const char *path);
  22
  23 #define DIFF_FORMAT_RAW         0x0001
  24 #define DIFF_FORMAT_DIFFSTAT    0x0002
  25 #define DIFF_FORMAT_SUMMARY     0x0004
  26 #define DIFF_FORMAT_PATCH       0x0008
  27
  28 /* These override all above */
  29 #define DIFF_FORMAT_NAME        0x0010
  30 #define DIFF_FORMAT_NAME_STATUS 0x0020
  31 #define DIFF_FORMAT_CHECKDIFF   0x0040
  32
  33 /* Same as output_format = 0 but we know that -s flag was given
  34  * and we should not give default value to output_format.
  35  */
  36 #define DIFF_FORMAT_NO_OUTPUT   0x0080
  37
  38 struct diff_options {
  39         const char *filter;
  40         const char *orderfile;
  41         const char *pickaxe;
  42         unsigned recursive:1,
  43                  tree_in_recursive:1,
  44                  binary:1,
  45                  text:1,
  46                  full_index:1,
  47                  silent_on_remove:1,
  48                  find_copies_harder:1,
  49                  color_diff:1,
  50                  color_diff_words:1;
  51         int context;
  52         int break_opt;
  53         int detect_rename;
  54         int line_termination;
  55         int output_format;
  56         int pickaxe_opts;
  57         int rename_score;
  58         int reverse_diff;
  59         int rename_limit;
  60         int setup;
  61         int abbrev;
  62         const char *msg_sep;
  63         const char *stat_sep;
  64         long xdl_opts;
  65
  66         int nr_paths;
  67         const char **paths;
  68         int *pathlens;
  69         change_fn_t change;
  70         add_remove_fn_t add_remove;
  71 };
  72
  73 enum color_diff {
  74         DIFF_RESET = 0,
  75         DIFF_PLAIN = 1,
  76         DIFF_METAINFO = 2,
  77         DIFF_FRAGINFO = 3,
  78         DIFF_FILE_OLD = 4,
  79         DIFF_FILE_NEW = 5,
  80         DIFF_COMMIT = 6,
  81 };
  82 const char *diff_get_color(int diff_use_color, enum color_diff ix);
  83
  84 extern const char mime_boundary_leader[];
  85
  86 extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
  87 extern void diff_tree_release_paths(struct diff_options *);
  88 extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
  89                      const char *base, struct diff_options *opt);
  90 extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
  91                           const char *base, struct diff_options *opt);
  92
  93 struct combine_diff_path {
  94         struct combine_diff_path *next;
  95         int len;
  96         char *path;
  97         unsigned int mode;
  98         unsigned char sha1[20];
  99         struct combine_diff_parent {
 100                 char status;
 101                 unsigned int mode;
 102                 unsigned char sha1[20];
 103         } parent[FLEX_ARRAY];
 104 };
 105 #define combine_diff_path_size(n, l) \
 106         (sizeof(struct combine_diff_path) + \
 107          sizeof(struct combine_diff_parent) * (n) + (l) + 1)
 108
 109 extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
 110                               int dense, struct rev_info *);
 111
 112 extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
 113
 114 extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
 115
 116 extern void diff_addremove(struct diff_options *,
 117                            int addremove,
 118                            unsigned mode,
 119                            const unsigned char *sha1,
 120                            const char *base,
 121                            const char *path);
 122
 123 extern void diff_change(struct diff_options *,
 124                         unsigned mode1, unsigned mode2,
 125                         const unsigned char *sha1,
 126                         const unsigned char *sha2,
 127                         const char *base, const char *path);
 128
 129 extern void diff_unmerge(struct diff_options *,
 130                          const char *path);
 131
 132 extern int diff_scoreopt_parse(const char *opt);
 133
 134 #define DIFF_SETUP_REVERSE              1
 135 #define DIFF_SETUP_USE_CACHE            2
 136 #define DIFF_SETUP_USE_SIZE_CACHE       4
 137
 138 extern int git_diff_ui_config(const char *var, const char *value);
 139 extern void diff_setup(struct diff_options *);
 140 extern int diff_opt_parse(struct diff_options *, const char **, int);
 141 extern int diff_setup_done(struct diff_options *);
 142
 143 #define DIFF_DETECT_RENAME      1
 144 #define DIFF_DETECT_COPY        2
 145
 146 #define DIFF_PICKAXE_ALL        1
 147 #define DIFF_PICKAXE_REGEX      2
 148
 149 extern void diffcore_std(struct diff_options *);
 150
 151 extern void diffcore_std_no_resolve(struct diff_options *);
 152
 153 #define COMMON_DIFF_OPTIONS_HELP \
 154 "\ncommon diff options:\n" \
 155 "  -z            output diff-raw with lines terminated with NUL.\n" \
 156 "  -p            output patch format.\n" \
 157 "  -u            synonym for -p.\n" \
 158 "  --patch-with-raw\n" \
 159 "                output both a patch and the diff-raw format.\n" \
 160 "  --stat        show diffstat instead of patch.\n" \
 161 "  --patch-with-stat\n" \
 162 "                output a patch and prepend its diffstat.\n" \
 163 "  --name-only   show only names of changed files.\n" \
 164 "  --name-status show names and status of changed files.\n" \
 165 "  --full-index  show full object name on index lines.\n" \
 166 "  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 167 "  -R            swap input file pairs.\n" \
 168 "  -B            detect complete rewrites.\n" \
 169 "  -M            detect renames.\n" \
 170 "  -C            detect copies.\n" \
 171 "  --find-copies-harder\n" \
 172 "                try unchanged files as candidate for copy detection.\n" \
 173 "  -l<n>         limit rename attempts up to <n> paths.\n" \
 174 "  -O<file>      reorder diffs according to the <file>.\n" \
 175 "  -S<string>    find filepair whose only one side contains the string.\n" \
 176 "  --pickaxe-all\n" \
 177 "                show all files diff when -S is used and hit is found.\n" \
 178 "  -a  --text    treat all files as text.\n"
 179
 180 extern int diff_queue_is_empty(void);
 181 extern void diff_flush(struct diff_options*);
 182
 183 /* diff-raw status letters */
 184 #define DIFF_STATUS_ADDED               'A'
 185 #define DIFF_STATUS_COPIED              'C'
 186 #define DIFF_STATUS_DELETED             'D'
 187 #define DIFF_STATUS_MODIFIED            'M'
 188 #define DIFF_STATUS_RENAMED             'R'
 189 #define DIFF_STATUS_TYPE_CHANGED        'T'
 190 #define DIFF_STATUS_UNKNOWN             'X'
 191 #define DIFF_STATUS_UNMERGED            'U'
 192
 193 /* these are not diff-raw status letters proper, but used by
 194  * diffcore-filter insn to specify additional restrictions.
 195  */
 196 #define DIFF_STATUS_FILTER_AON          '*'
 197 #define DIFF_STATUS_FILTER_BROKEN       'B'
 198
 199 extern const char *diff_unique_abbrev(const unsigned char *, int);
 200
 201 extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 202
 203 extern int run_diff_index(struct rev_info *revs, int cached);
 204
 205 extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
 206
 207 #endif /* DIFF_H */