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#include "tree-walk.h"
   8
   9struct rev_info;
  10struct diff_options;
  11
  12typedef 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
  18typedef 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
  23struct diff_options {
  24        const char *filter;
  25        const char *orderfile;
  26        const char *pickaxe;
  27        unsigned recursive:1,
  28                 with_raw:1,
  29                 with_stat:1,
  30                 tree_in_recursive:1,
  31                 full_index:1,
  32                 silent_on_remove:1,
  33                 find_copies_harder:1;
  34        int break_opt;
  35        int detect_rename;
  36        int line_termination;
  37        int output_format;
  38        int pickaxe_opts;
  39        int rename_score;
  40        int reverse_diff;
  41        int rename_limit;
  42        int setup;
  43        int abbrev;
  44
  45        int nr_paths;
  46        const char **paths;
  47        int *pathlens;
  48        change_fn_t change;
  49        add_remove_fn_t add_remove;
  50};
  51
  52extern void diff_tree_setup_paths(const char **paths, struct diff_options *);
  53extern void diff_tree_release_paths(struct diff_options *);
  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 int mode;
  64        unsigned char sha1[20];
  65        struct combine_diff_parent {
  66                char status;
  67                unsigned int mode;
  68                unsigned char sha1[20];
  69        } parent[FLEX_ARRAY];
  70};
  71#define combine_diff_path_size(n, l) \
  72        (sizeof(struct combine_diff_path) + \
  73         sizeof(struct combine_diff_parent) * (n) + (l) + 1)
  74
  75extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
  76                              int dense, struct rev_info *);
  77
  78extern void diff_tree_combined(const unsigned char *sha1, const unsigned char parent[][20], int num_parent, int dense, struct rev_info *rev);
  79
  80extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
  81
  82extern void diff_addremove(struct diff_options *,
  83                           int addremove,
  84                           unsigned mode,
  85                           const unsigned char *sha1,
  86                           const char *base,
  87                           const char *path);
  88
  89extern void diff_change(struct diff_options *,
  90                        unsigned mode1, unsigned mode2,
  91                        const unsigned char *sha1,
  92                        const unsigned char *sha2,
  93                        const char *base, const char *path);
  94
  95extern void diff_unmerge(struct diff_options *,
  96                         const char *path);
  97
  98extern int diff_scoreopt_parse(const char *opt);
  99
 100#define DIFF_SETUP_REVERSE              1
 101#define DIFF_SETUP_USE_CACHE            2
 102#define DIFF_SETUP_USE_SIZE_CACHE       4
 103
 104extern int git_diff_config(const char *var, const char *value);
 105extern void diff_setup(struct diff_options *);
 106extern int diff_opt_parse(struct diff_options *, const char **, int);
 107extern int diff_setup_done(struct diff_options *);
 108
 109#define DIFF_DETECT_RENAME      1
 110#define DIFF_DETECT_COPY        2
 111
 112#define DIFF_PICKAXE_ALL        1
 113#define DIFF_PICKAXE_REGEX      2
 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"  --patch-with-raw\n" \
 125"                output both a patch and the diff-raw format.\n" \
 126"  --stat        show diffstat instead of patch.\n" \
 127"  --patch-with-stat\n" \
 128"                output a patch and prepend its diffstat.\n" \
 129"  --name-only   show only names of changed files.\n" \
 130"  --name-status show names and status of changed files.\n" \
 131"  --full-index  show full object name on index lines.\n" \
 132"  --abbrev=<n>  abbreviate object names in diff-tree header and diff-raw.\n" \
 133"  -R            swap input file pairs.\n" \
 134"  -B            detect complete rewrites.\n" \
 135"  -M            detect renames.\n" \
 136"  -C            detect copies.\n" \
 137"  --find-copies-harder\n" \
 138"                try unchanged files as candidate for copy detection.\n" \
 139"  -l<n>         limit rename attempts up to <n> paths.\n" \
 140"  -O<file>      reorder diffs according to the <file>.\n" \
 141"  -S<string>    find filepair whose only one side contains the string.\n" \
 142"  --pickaxe-all\n" \
 143"                show all files diff when -S is used and hit is found.\n"
 144
 145extern int diff_queue_is_empty(void);
 146
 147#define DIFF_FORMAT_RAW         1
 148#define DIFF_FORMAT_PATCH       2
 149#define DIFF_FORMAT_NO_OUTPUT   3
 150#define DIFF_FORMAT_NAME        4
 151#define DIFF_FORMAT_NAME_STATUS 5
 152#define DIFF_FORMAT_DIFFSTAT    6
 153
 154extern void diff_flush(struct diff_options*);
 155
 156/* diff-raw status letters */
 157#define DIFF_STATUS_ADDED               'A'
 158#define DIFF_STATUS_COPIED              'C'
 159#define DIFF_STATUS_DELETED             'D'
 160#define DIFF_STATUS_MODIFIED            'M'
 161#define DIFF_STATUS_RENAMED             'R'
 162#define DIFF_STATUS_TYPE_CHANGED        'T'
 163#define DIFF_STATUS_UNKNOWN             'X'
 164#define DIFF_STATUS_UNMERGED            'U'
 165
 166/* these are not diff-raw status letters proper, but used by
 167 * diffcore-filter insn to specify additional restrictions.
 168 */
 169#define DIFF_STATUS_FILTER_AON          '*'
 170#define DIFF_STATUS_FILTER_BROKEN       'B'
 171
 172extern const char *diff_unique_abbrev(const unsigned char *, int);
 173
 174extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 175
 176extern int run_diff_index(struct rev_info *revs, int cached);
 177
 178#endif /* DIFF_H */