diff options
Diffstat (limited to 'diff.h')
| -rw-r--r-- | diff.h | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/diff.h b/diff.h new file mode 100644 index 0000000000..78b4091dd5 --- /dev/null +++ b/diff.h @@ -0,0 +1,345 @@ +/* + * Copyright (C) 2005 Junio C Hamano + */ +#ifndef DIFF_H +#define DIFF_H + +#include "tree-walk.h" + +struct rev_info; +struct diff_options; +struct diff_queue_struct; +struct strbuf; +struct diff_filespec; +struct userdiff_driver; +struct sha1_array; +struct commit; + +typedef void (*change_fn_t)(struct diff_options *options, + unsigned old_mode, unsigned new_mode, + const unsigned char *old_sha1, + const unsigned char *new_sha1, + int old_sha1_valid, int new_sha1_valid, + const char *fullpath, + unsigned old_dirty_submodule, unsigned new_dirty_submodule); + +typedef void (*add_remove_fn_t)(struct diff_options *options, + int addremove, unsigned mode, + const unsigned char *sha1, + int sha1_valid, + const char *fullpath, unsigned dirty_submodule); + +typedef void (*diff_format_fn_t)(struct diff_queue_struct *q, + struct diff_options *options, void *data); + +typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data); + +#define DIFF_FORMAT_RAW 0x0001 +#define DIFF_FORMAT_DIFFSTAT 0x0002 +#define DIFF_FORMAT_NUMSTAT 0x0004 +#define DIFF_FORMAT_SUMMARY 0x0008 +#define DIFF_FORMAT_PATCH 0x0010 +#define DIFF_FORMAT_SHORTSTAT 0x0020 +#define DIFF_FORMAT_DIRSTAT 0x0040 + +/* These override all above */ +#define DIFF_FORMAT_NAME 0x0100 +#define DIFF_FORMAT_NAME_STATUS 0x0200 +#define DIFF_FORMAT_CHECKDIFF 0x0400 + +/* Same as output_format = 0 but we know that -s flag was given + * and we should not give default value to output_format. + */ +#define DIFF_FORMAT_NO_OUTPUT 0x0800 + +#define DIFF_FORMAT_CALLBACK 0x1000 + +#define DIFF_OPT_RECURSIVE (1 << 0) +#define DIFF_OPT_TREE_IN_RECURSIVE (1 << 1) +#define DIFF_OPT_BINARY (1 << 2) +#define DIFF_OPT_TEXT (1 << 3) +#define DIFF_OPT_FULL_INDEX (1 << 4) +#define DIFF_OPT_SILENT_ON_REMOVE (1 << 5) +#define DIFF_OPT_FIND_COPIES_HARDER (1 << 6) +#define DIFF_OPT_FOLLOW_RENAMES (1 << 7) +#define DIFF_OPT_RENAME_EMPTY (1 << 8) +/* (1 << 9) unused */ +#define DIFF_OPT_HAS_CHANGES (1 << 10) +#define DIFF_OPT_QUICK (1 << 11) +#define DIFF_OPT_NO_INDEX (1 << 12) +#define DIFF_OPT_ALLOW_EXTERNAL (1 << 13) +#define DIFF_OPT_EXIT_WITH_STATUS (1 << 14) +#define DIFF_OPT_REVERSE_DIFF (1 << 15) +#define DIFF_OPT_CHECK_FAILED (1 << 16) +#define DIFF_OPT_RELATIVE_NAME (1 << 17) +#define DIFF_OPT_IGNORE_SUBMODULES (1 << 18) +#define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19) +#define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20) +#define DIFF_OPT_ALLOW_TEXTCONV (1 << 21) +#define DIFF_OPT_DIFF_FROM_CONTENTS (1 << 22) +#define DIFF_OPT_SUBMODULE_LOG (1 << 23) +#define DIFF_OPT_DIRTY_SUBMODULES (1 << 24) +#define DIFF_OPT_IGNORE_UNTRACKED_IN_SUBMODULES (1 << 25) +#define DIFF_OPT_IGNORE_DIRTY_SUBMODULES (1 << 26) +#define DIFF_OPT_OVERRIDE_SUBMODULE_CONFIG (1 << 27) +#define DIFF_OPT_DIRSTAT_BY_LINE (1 << 28) +#define DIFF_OPT_FUNCCONTEXT (1 << 29) +#define DIFF_OPT_PICKAXE_IGNORE_CASE (1 << 30) + +#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag) +#define DIFF_OPT_SET(opts, flag) ((opts)->flags |= DIFF_OPT_##flag) +#define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag) +#define DIFF_XDL_TST(opts, flag) ((opts)->xdl_opts & XDF_##flag) +#define DIFF_XDL_SET(opts, flag) ((opts)->xdl_opts |= XDF_##flag) +#define DIFF_XDL_CLR(opts, flag) ((opts)->xdl_opts &= ~XDF_##flag) + +#define DIFF_WITH_ALG(opts, flag) (((opts)->xdl_opts & ~XDF_DIFF_ALGORITHM_MASK) | XDF_##flag) + +enum diff_words_type { + DIFF_WORDS_NONE = 0, + DIFF_WORDS_PORCELAIN, + DIFF_WORDS_PLAIN, + DIFF_WORDS_COLOR +}; + +struct diff_options { + const char *filter; + const char *orderfile; + const char *pickaxe; + const char *single_follow; + const char *a_prefix, *b_prefix; + unsigned flags; + int use_color; + int context; + int interhunkcontext; + int break_opt; + int detect_rename; + int irreversible_delete; + int skip_stat_unmatch; + int line_termination; + int output_format; + int pickaxe_opts; + int rename_score; + int rename_limit; + int needed_rename_limit; + int degraded_cc_to_c; + int show_rename_progress; + int dirstat_permille; + int setup; + int abbrev; + const char *prefix; + int prefix_length; + const char *stat_sep; + long xdl_opts; + + int stat_width; + int stat_name_width; + int stat_graph_width; + int stat_count; + const char *word_regex; + enum diff_words_type word_diff; + + /* this is set by diffcore for DIFF_FORMAT_PATCH */ + int found_changes; + + /* to support internal diff recursion by --follow hack*/ + int found_follow; + + FILE *file; + int close_file; + + struct pathspec pathspec; + change_fn_t change; + add_remove_fn_t add_remove; + diff_format_fn_t format_callback; + void *format_callback_data; + diff_prefix_fn_t output_prefix; + int output_prefix_length; + void *output_prefix_data; +}; + +enum color_diff { + DIFF_RESET = 0, + DIFF_PLAIN = 1, + DIFF_METAINFO = 2, + DIFF_FRAGINFO = 3, + DIFF_FILE_OLD = 4, + DIFF_FILE_NEW = 5, + DIFF_COMMIT = 6, + DIFF_WHITESPACE = 7, + DIFF_FUNCINFO = 8 +}; +const char *diff_get_color(int diff_use_color, enum color_diff ix); +#define diff_get_color_opt(o, ix) \ + diff_get_color((o)->use_color, ix) + + +const char *diff_line_prefix(struct diff_options *); + + +extern const char mime_boundary_leader[]; + +extern void diff_tree_setup_paths(const char **paths, struct diff_options *); +extern void diff_tree_release_paths(struct diff_options *); +extern int diff_tree(struct tree_desc *t1, struct tree_desc *t2, + const char *base, struct diff_options *opt); +extern int diff_tree_sha1(const unsigned char *old, const unsigned char *new, + const char *base, struct diff_options *opt); +extern int diff_root_tree_sha1(const unsigned char *new, const char *base, + struct diff_options *opt); + +struct combine_diff_path { + struct combine_diff_path *next; + int len; + char *path; + unsigned int mode; + unsigned char sha1[20]; + struct combine_diff_parent { + char status; + unsigned int mode; + unsigned char sha1[20]; + } parent[FLEX_ARRAY]; +}; +#define combine_diff_path_size(n, l) \ + (sizeof(struct combine_diff_path) + \ + sizeof(struct combine_diff_parent) * (n) + (l) + 1) + +extern void show_combined_diff(struct combine_diff_path *elem, int num_parent, + int dense, struct rev_info *); + +extern void diff_tree_combined(const unsigned char *sha1, const struct sha1_array *parents, int dense, struct rev_info *rev); + +extern void diff_tree_combined_merge(const struct commit *commit, int dense, struct rev_info *rev); + +void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b); + +extern int diff_can_quit_early(struct diff_options *); + +extern void diff_addremove(struct diff_options *, + int addremove, + unsigned mode, + const unsigned char *sha1, + int sha1_valid, + const char *fullpath, unsigned dirty_submodule); + +extern void diff_change(struct diff_options *, + unsigned mode1, unsigned mode2, + const unsigned char *sha1, + const unsigned char *sha2, + int sha1_valid, + int sha2_valid, + const char *fullpath, + unsigned dirty_submodule1, unsigned dirty_submodule2); + +extern struct diff_filepair *diff_unmerge(struct diff_options *, const char *path); + +#define DIFF_SETUP_REVERSE 1 +#define DIFF_SETUP_USE_CACHE 2 +#define DIFF_SETUP_USE_SIZE_CACHE 4 + +/* + * Poor man's alternative to parse-option, to allow both sticked form + * (--option=value) and separate form (--option value). + */ +extern int parse_long_opt(const char *opt, const char **argv, + const char **optarg); + +extern int git_diff_basic_config(const char *var, const char *value, void *cb); +extern int git_diff_ui_config(const char *var, const char *value, void *cb); +extern void diff_setup(struct diff_options *); +extern int diff_opt_parse(struct diff_options *, const char **, int); +extern void diff_setup_done(struct diff_options *); + +#define DIFF_DETECT_RENAME 1 +#define DIFF_DETECT_COPY 2 + +#define DIFF_PICKAXE_ALL 1 +#define DIFF_PICKAXE_REGEX 2 + +#define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */ +#define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */ + +extern void diffcore_std(struct diff_options *); +extern void diffcore_fix_diff_index(struct diff_options *); + +#define COMMON_DIFF_OPTIONS_HELP \ +"\ncommon diff options:\n" \ +" -z output diff-raw with lines terminated with NUL.\n" \ +" -p output patch format.\n" \ +" -u synonym for -p.\n" \ +" --patch-with-raw\n" \ +" output both a patch and the diff-raw format.\n" \ +" --stat show diffstat instead of patch.\n" \ +" --numstat show numeric diffstat instead of patch.\n" \ +" --patch-with-stat\n" \ +" output a patch and prepend its diffstat.\n" \ +" --name-only show only names of changed files.\n" \ +" --name-status show names and status of changed files.\n" \ +" --full-index show full object name on index lines.\n" \ +" --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \ +" -R swap input file pairs.\n" \ +" -B detect complete rewrites.\n" \ +" -M detect renames.\n" \ +" -C detect copies.\n" \ +" --find-copies-harder\n" \ +" try unchanged files as candidate for copy detection.\n" \ +" -l<n> limit rename attempts up to <n> paths.\n" \ +" -O<file> reorder diffs according to the <file>.\n" \ +" -S<string> find filepair whose only one side contains the string.\n" \ +" --pickaxe-all\n" \ +" show all files diff when -S is used and hit is found.\n" \ +" -a --text treat all files as text.\n" + +extern int diff_queue_is_empty(void); +extern void diff_flush(struct diff_options*); +extern void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc); + +/* diff-raw status letters */ +#define DIFF_STATUS_ADDED 'A' +#define DIFF_STATUS_COPIED 'C' +#define DIFF_STATUS_DELETED 'D' +#define DIFF_STATUS_MODIFIED 'M' +#define DIFF_STATUS_RENAMED 'R' +#define DIFF_STATUS_TYPE_CHANGED 'T' +#define DIFF_STATUS_UNKNOWN 'X' +#define DIFF_STATUS_UNMERGED 'U' + +/* these are not diff-raw status letters proper, but used by + * diffcore-filter insn to specify additional restrictions. + */ +#define DIFF_STATUS_FILTER_AON '*' +#define DIFF_STATUS_FILTER_BROKEN 'B' + +extern const char *diff_unique_abbrev(const unsigned char *, int); + +/* do not report anything on removed paths */ +#define DIFF_SILENT_ON_REMOVED 01 +/* report racily-clean paths as modified */ +#define DIFF_RACY_IS_MODIFIED 02 +extern int run_diff_files(struct rev_info *revs, unsigned int option); +extern int run_diff_index(struct rev_info *revs, int cached); + +extern int do_diff_cache(const unsigned char *, struct diff_options *); +extern int diff_flush_patch_id(struct diff_options *, unsigned char *); + +extern int diff_result_code(struct diff_options *, int); + +extern void diff_no_index(struct rev_info *, int, const char **, int, const char *); + +extern int index_differs_from(const char *def, int diff_flags); + +extern size_t fill_textconv(struct userdiff_driver *driver, + struct diff_filespec *df, + char **outbuf); + +extern struct userdiff_driver *get_textconv(struct diff_filespec *one); + +extern int parse_rename_score(const char **cp_p); + +extern long parse_algorithm_value(const char *value); + +extern int print_stat_summary(FILE *fp, int files, + int insertions, int deletions); +extern void setup_diff_pager(struct diff_options *); + +#endif /* DIFF_H */ |