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         int context;
  51         int break_opt;
  52         int detect_rename;
  53         int line_termination;
  54         int output_format;
  55         int pickaxe_opts;
  56         int rename_score;
  57         int reverse_diff;
  58         int rename_limit;
  59         int setup;
  60         int abbrev;
  61         const char *msg_sep;
  62         const char *stat_sep;
  63         long xdl_opts;
  64
  65         int nr_paths;
  66         const char **paths;
  67         int *pathlens;
  68         change_fn_t change;
  69         add_remove_fn_t add_remove;
  70 };
  71
  72 extern const char mime_boundary_leader[];
  73
  74 extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
  75 extern void diff_tree_release_paths(struct diff_options *);
  76 extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
  77                      const char *base, struct diff_options *opt);
  78 extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new,
  79                           const char *base, struct diff_options *opt);
  80
  81 struct combine_diff_path {
  82         struct combine_diff_path *next;
  83         int len;
  84         char *path;
  85         unsigned int mode;
  86         unsigned char sha1[20];
  87         struct combine_diff_parent {
  88                 char status;
  89                 unsigned int mode;
  90                 unsigned char sha1[20];
  91         } parent[FLEX_ARRAY];
  92 };
  93 #define combine_diff_path_size(n, l) \
  94         (sizeof(struct combine_diff_path) + \
  95          sizeof(struct combine_diff_parent) * (n) + (l) + 1)
  96
  97 extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
  98                               int dense, struct rev_info *);
  99
 100 extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
 101
 102 extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
 103
 104 extern void diff_addremove(struct diff_options *,
 105                            int addremove,
 106                            unsigned mode,
 107                            const unsigned char *sha1,
 108                            const char *base,
 109                            const char *path);
 110
 111 extern void diff_change(struct diff_options *,
 112                         unsigned mode1, unsigned mode2,
 113                         const unsigned char *sha1,
 114                         const unsigned char *sha2,
 115                         const char *base, const char *path);
 116
 117 extern void diff_unmerge(struct diff_options *,
 118                          const char *path);
 119
 120 extern int diff_scoreopt_parse(const char *opt);
 121
 122 #define DIFF_SETUP_REVERSE              1
 123 #define DIFF_SETUP_USE_CACHE            2
 124 #define DIFF_SETUP_USE_SIZE_CACHE       4
 125
 126 extern int git_diff_config(const char *var, const char *value);
 127 extern void diff_setup(struct diff_options *);
 128 extern int diff_opt_parse(struct diff_options *, const char **, int);
 129 extern int diff_setup_done(struct diff_options *);
 130
 131 #define DIFF_DETECT_RENAME      1
 132 #define DIFF_DETECT_COPY        2
 133
 134 #define DIFF_PICKAXE_ALL        1
 135 #define DIFF_PICKAXE_REGEX      2
 136
 137 extern void diffcore_std(struct diff_options *);
 138
 139 extern void diffcore_std_no_resolve(struct diff_options *);
 140
 141 #define COMMON_DIFF_OPTIONS_HELP \
 142 "\ncommon diff options:\n" \
 143 "  -z            output diff-raw with lines terminated with NUL.\n" \
 144 "  -p            output patch format.\n" \
 145 "  -u            synonym for -p.\n" \
 146 "  --patch-with-raw\n" \
 147 "                output both a patch and the diff-raw format.\n" \
 148 "  --stat        show diffstat instead of patch.\n" \
 149 "  --patch-with-stat\n" \
 150 "                output a patch and prepend its diffstat.\n" \
 151 "  --name-only   show only names of changed files.\n" \
 152 "  --name-status show names and status of changed files.\n" \
 153 "  --full-index  show full object name on index lines.\n" \
 154 "  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 155 "  -R            swap input file pairs.\n" \
 156 "  -B            detect complete rewrites.\n" \
 157 "  -M            detect renames.\n" \
 158 "  -C            detect copies.\n" \
 159 "  --find-copies-harder\n" \
 160 "                try unchanged files as candidate for copy detection.\n" \
 161 "  -l<n>         limit rename attempts up to <n> paths.\n" \
 162 "  -O<file>      reorder diffs according to the <file>.\n" \
 163 "  -S<string>    find filepair whose only one side contains the string.\n" \
 164 "  --pickaxe-all\n" \
 165 "                show all files diff when -S is used and hit is found.\n" \
 166 "  -a  --text    treat all files as text.\n"
 167
 168 extern int diff_queue_is_empty(void);
 169 extern void diff_flush(struct diff_options*);
 170
 171 /* diff-raw status letters */
 172 #define DIFF_STATUS_ADDED               'A'
 173 #define DIFF_STATUS_COPIED              'C'
 174 #define DIFF_STATUS_DELETED             'D'
 175 #define DIFF_STATUS_MODIFIED            'M'
 176 #define DIFF_STATUS_RENAMED             'R'
 177 #define DIFF_STATUS_TYPE_CHANGED        'T'
 178 #define DIFF_STATUS_UNKNOWN             'X'
 179 #define DIFF_STATUS_UNMERGED            'U'
 180
 181 /* these are not diff-raw status letters proper, but used by
 182  * diffcore-filter insn to specify additional restrictions.
 183  */
 184 #define DIFF_STATUS_FILTER_AON          '*'
 185 #define DIFF_STATUS_FILTER_BROKEN       'B'
 186
 187 extern const char *diff_unique_abbrev(const unsigned char *, int);
 188
 189 extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 190
 191 extern int run_diff_index(struct rev_info *revs, int cached);
 192
 193 extern int diff_flush_patch_id(struct diff_options *, unsigned char *);
 194
 195 #endif /* DIFF_H */