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   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
  11 struct diff_options {
  12         const char **paths;
  13         const char *filter;
  14         const char *orderfile;
  15         const char *pickaxe;
  16         int break_opt;
  17         int detect_rename;
  18         int find_copies_harder;
  19         int line_termination;
  20         int output_format;
  21         int pickaxe_opts;
  22         int rename_score;
  23         int reverse_diff;
  24         int rename_limit;
  25         int setup;
  26 };
  27
  28 extern void diff_addremove(struct diff_options *,
  29                            int addremove,
  30                            unsigned mode,
  31                            const unsigned char *sha1,
  32                            const char *base,
  33                            const char *path);
  34
  35 extern void diff_change(struct diff_options *,
  36                         unsigned mode1, unsigned mode2,
  37                         const unsigned char *sha1,
  38                         const unsigned char *sha2,
  39                         const char *base, const char *path);
  40
  41 extern void diff_unmerge(struct diff_options *,
  42                          const char *path);
  43
  44 extern int diff_scoreopt_parse(const char *opt);
  45
  46 #define DIFF_SETUP_REVERSE              1
  47 #define DIFF_SETUP_USE_CACHE            2
  48 #define DIFF_SETUP_USE_SIZE_CACHE       4
  49
  50 extern void diff_setup(struct diff_options *);
  51 extern int diff_opt_parse(struct diff_options *, const char **, int);
  52 extern int diff_setup_done(struct diff_options *);
  53
  54 #define DIFF_DETECT_RENAME      1
  55 #define DIFF_DETECT_COPY        2
  56
  57 #define DIFF_PICKAXE_ALL        1
  58
  59 extern void diffcore_std(struct diff_options *);
  60
  61 extern void diffcore_std_no_resolve(struct diff_options *);
  62
  63 #define COMMON_DIFF_OPTIONS_HELP \
  64 "\ncommon diff options:\n" \
  65 "  -r            diff recursively (only meaningful in diff-tree)\n" \
  66 "  -z            output diff-raw with lines terminated with NUL.\n" \
  67 "  -p            output patch format.\n" \
  68 "  -u            synonym for -p.\n" \
  69 "  --name-only   show only names of changed files.\n" \
  70 "  --name-status show names and status of changed files.\n" \
  71 "  -R            swap input file pairs.\n" \
  72 "  -B            detect complete rewrites.\n" \
  73 "  -M            detect renames.\n" \
  74 "  -C            detect copies.\n" \
  75 "  --find-copies-harder\n" \
  76 "                try unchanged files as candidate for copy detection.\n" \
  77 "  -l<n>         limit rename attempts up to <n> paths.\n" \
  78 "  -O<file>      reorder diffs according to the <file>.\n" \
  79 "  -S<string>    find filepair whose only one side contains the string.\n" \
  80 "  --pickaxe-all\n" \
  81 "                show all files diff when -S is used and hit is found.\n"
  82
  83 extern int diff_queue_is_empty(void);
  84
  85 #define DIFF_FORMAT_RAW         1
  86 #define DIFF_FORMAT_PATCH       2
  87 #define DIFF_FORMAT_NO_OUTPUT   3
  88 #define DIFF_FORMAT_NAME        4
  89 #define DIFF_FORMAT_NAME_STATUS 5
  90
  91 extern void diff_flush(struct diff_options*);
  92
  93 /* diff-raw status letters */
  94 #define DIFF_STATUS_ADDED               'A'
  95 #define DIFF_STATUS_COPIED              'C'
  96 #define DIFF_STATUS_DELETED             'D'
  97 #define DIFF_STATUS_MODIFIED            'M'
  98 #define DIFF_STATUS_RENAMED             'R'
  99 #define DIFF_STATUS_TYPE_CHANGED        'T'
 100 #define DIFF_STATUS_UNKNOWN             'X'
 101 #define DIFF_STATUS_UNMERGED            'U'
 102
 103 /* these are not diff-raw status letters proper, but used by
 104  * diffcore-filter insn to specify additional restrictions.
 105  */
 106 #define DIFF_STATUS_FILTER_AON          '*'
 107 #define DIFF_STATUS_FILTER_BROKEN       'B'
 108
 109 #endif /* DIFF_H */