#include "tree-walk.h"
#include "pathspec.h"
#include "object.h"
+#include "oidset.h"
+
+/**
+ * The diff API is for programs that compare two sets of files (e.g. two trees,
+ * one tree and the index) and present the found difference in various ways.
+ * The calling program is responsible for feeding the API pairs of files, one
+ * from the "old" set and the corresponding one from "new" set, that are
+ * different.
+ * The library called through this API is called diffcore, and is responsible
+ * for two things.
+ *
+ * - finding total rewrites (`-B`), renames (`-M`) and copies (`-C`), and
+ * changes that touch a string (`-S`), as specified by the caller.
+ *
+ * - outputting the differences in various formats, as specified by the caller.
+ *
+ * Calling sequence
+ * ----------------
+ *
+ * - Prepare `struct diff_options` to record the set of diff options, and then
+ * call `repo_diff_setup()` to initialize this structure. This sets up the
+ * vanilla default.
+ *
+ * - Fill in the options structure to specify desired output format, rename
+ * detection, etc. `diff_opt_parse()` can be used to parse options given
+ * from the command line in a way consistent with existing git-diff family
+ * of programs.
+ *
+ * - Call `diff_setup_done()`; this inspects the options set up so far for
+ * internal consistency and make necessary tweaking to it (e.g. if textual
+ * patch output was asked, recursive behaviour is turned on); the callback
+ * set_default in diff_options can be used to tweak this more.
+ *
+ * - As you find different pairs of files, call `diff_change()` to feed
+ * modified files, `diff_addremove()` to feed created or deleted files, or
+ * `diff_unmerge()` to feed a file whose state is 'unmerged' to the API.
+ * These are thin wrappers to a lower-level `diff_queue()` function that is
+ * flexible enough to record any of these kinds of changes.
+ *
+ * - Once you finish feeding the pairs of files, call `diffcore_std()`.
+ * This will tell the diffcore library to go ahead and do its work.
+ *
+ * - Calling `diff_flush()` will produce the output.
+ */
-struct rev_info;
+struct combine_diff_path;
+struct commit;
+struct diff_filespec;
struct diff_options;
struct diff_queue_struct;
+struct oid_array;
+struct option;
+struct repository;
+struct rev_info;
struct strbuf;
-struct diff_filespec;
struct userdiff_driver;
-struct oid_array;
-struct commit;
-struct combine_diff_path;
typedef int (*pathchange_fn_t)(struct diff_options *options,
struct combine_diff_path *path);
#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_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_DEFAULT_FOLLOW_RENAMES (1U << 31)
-
-#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
-#define DIFF_OPT_TOUCHED(opts, flag) ((opts)->touched_flags & DIFF_OPT_##flag)
-#define DIFF_OPT_SET(opts, flag) (((opts)->flags |= DIFF_OPT_##flag),((opts)->touched_flags |= DIFF_OPT_##flag))
-#define DIFF_OPT_CLR(opts, flag) (((opts)->flags &= ~DIFF_OPT_##flag),((opts)->touched_flags |= DIFF_OPT_##flag))
+#define DIFF_FLAGS_INIT { 0 }
+struct diff_flags {
+
+ /**
+ * Tells if tree traversal done by tree-diff should recursively descend
+ * into a tree object pair that are different in preimage and postimage set.
+ */
+ unsigned recursive;
+ unsigned tree_in_recursive;
+
+ /* Affects the way how a file that is seemingly binary is treated. */
+ unsigned binary;
+ unsigned text;
+
+ /**
+ * Tells the patch output format not to use abbreviated object names on the
+ * "index" lines.
+ */
+ unsigned full_index;
+
+ /* Affects if diff-files shows removed files. */
+ unsigned silent_on_remove;
+
+ /**
+ * Tells the diffcore library that the caller is feeding unchanged
+ * filepairs to allow copies from unmodified files be detected.
+ */
+ unsigned find_copies_harder;
+
+ unsigned follow_renames;
+ unsigned rename_empty;
+
+ /* Internal; used for optimization to see if there is any change. */
+ unsigned has_changes;
+
+ unsigned quick;
+
+ /**
+ * Tells diff-files that the input is not tracked files but files in random
+ * locations on the filesystem.
+ */
+ unsigned no_index;
+
+ /**
+ * Tells output routine that it is Ok to call user specified patch output
+ * routine. Plumbing disables this to ensure stable output.
+ */
+ unsigned allow_external;
+
+ /**
+ * For communication between the calling program and the options parser;
+ * tell the calling program to signal the presence of difference using
+ * program exit code.
+ */
+ unsigned exit_with_status;
+
+ /**
+ * Tells the library that the calling program is feeding the filepairs
+ * reversed; `one` is two, and `two` is one.
+ */
+ unsigned reverse_diff;
+
+ unsigned check_failed;
+ unsigned relative_name;
+ unsigned ignore_submodules;
+ unsigned dirstat_cumulative;
+ unsigned dirstat_by_file;
+ unsigned allow_textconv;
+ unsigned textconv_set_via_cmdline;
+ unsigned diff_from_contents;
+ unsigned dirty_submodules;
+ unsigned ignore_untracked_in_submodules;
+ unsigned ignore_dirty_submodules;
+ unsigned override_submodule_config;
+ unsigned dirstat_by_line;
+ unsigned funccontext;
+ unsigned default_follow_renames;
+ unsigned stat_with_summary;
+ unsigned suppress_diff_headers;
+ unsigned dual_color_diffed_diffs;
+ unsigned suppress_hunk_header_line_count;
+};
+
+static inline void diff_flags_or(struct diff_flags *a,
+ const struct diff_flags *b)
+{
+ char *tmp_a = (char *)a;
+ const char *tmp_b = (const char *)b;
+ int i;
+
+ for (i = 0; i < sizeof(struct diff_flags); i++)
+ tmp_a[i] |= tmp_b[i];
+}
+
#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)
DIFF_SUBMODULE_INLINE_DIFF
};
+/**
+ * the set of options the calling program wants to affect the operation of
+ * diffcore library with.
+ */
struct diff_options {
const char *orderfile;
+
+ /**
+ * A constant string (can and typically does contain newlines to look for
+ * a block of text, not just a single line) to filter out the filepairs
+ * that do not change the number of strings contained in its preimage and
+ * postimage of the diff_queue.
+ */
const char *pickaxe;
+
const char *single_follow;
const char *a_prefix, *b_prefix;
const char *line_prefix;
size_t line_prefix_length;
- unsigned flags;
- unsigned touched_flags;
+
+ /**
+ * collection of boolean options that affects the operation, but some do
+ * not have anything to do with the diffcore library.
+ */
+ struct diff_flags flags;
/* diff-filter bits */
unsigned int filter;
int use_color;
+
+ /* Number of context lines to generate in patch output. */
int context;
+
int interhunkcontext;
+
+ /* Affects the way detection logic for complete rewrites, renames and
+ * copies.
+ */
int break_opt;
int detect_rename;
+
int irreversible_delete;
int skip_stat_unmatch;
int line_termination;
+
+ /* The output format used when `diff_flush()` is run. */
int output_format;
- int pickaxe_opts;
+
+ unsigned pickaxe_opts;
+
+ /* Affects the way detection logic for complete rewrites, renames and
+ * copies.
+ */
int rename_score;
int rename_limit;
+
int needed_rename_limit;
int degraded_cc_to_c;
int show_rename_progress;
int dirstat_permille;
int setup;
+
+ /* Number of hexdigits to abbreviate raw format output to. */
int abbrev;
+
int ita_invisible_in_index;
/* white-space error highlighting */
#define WSEH_NEW (1<<12)
const char *prefix;
int prefix_length;
const char *stat_sep;
- long xdl_opts;
+ int xdl_opts;
+
+ /* see Documentation/diff-options.txt */
+ char **anchors;
+ size_t anchors_nr, anchors_alloc;
int stat_width;
int stat_name_width;
enum diff_words_type word_diff;
enum diff_submodule_format submodule_format;
+ struct oidset *objfind;
+
/* this is set by diffcore for DIFF_FORMAT_PATCH */
int found_changes;
/* to support internal diff recursion by --follow hack*/
int found_follow;
+ /* Callback which allows tweaking the options in diff_setup_done(). */
void (*set_default)(struct diff_options *);
FILE *file;
int close_file;
+#define OUTPUT_INDICATOR_NEW 0
+#define OUTPUT_INDICATOR_OLD 1
+#define OUTPUT_INDICATOR_CONTEXT 2
+ char output_indicators[3];
+
struct pathspec pathspec;
pathchange_fn_t pathchange;
change_fn_t change;
add_remove_fn_t add_remove;
+ void *change_fn_data;
diff_format_fn_t format_callback;
void *format_callback_data;
diff_prefix_fn_t output_prefix;
enum {
COLOR_MOVED_NO = 0,
COLOR_MOVED_PLAIN = 1,
- COLOR_MOVED_ZEBRA = 2,
- COLOR_MOVED_ZEBRA_DIM = 3,
+ COLOR_MOVED_BLOCKS = 2,
+ COLOR_MOVED_ZEBRA = 3,
+ COLOR_MOVED_ZEBRA_DIM = 4,
} color_moved;
#define COLOR_MOVED_DEFAULT COLOR_MOVED_ZEBRA
#define COLOR_MOVED_MIN_ALNUM_COUNT 20
+
+ /* XDF_WHITESPACE_FLAGS regarding block detection are set at 2, 3, 4 */
+ #define COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE (1<<5)
+ #define COLOR_MOVED_WS_ERROR (1<<0)
+ unsigned color_moved_ws_handling;
+
+ struct repository *repo;
+ struct option *parseopts;
};
+unsigned diff_filter_bit(char status);
+
void diff_emit_submodule_del(struct diff_options *o, const char *line);
void diff_emit_submodule_add(struct diff_options *o, const char *line);
void diff_emit_submodule_untracked(struct diff_options *o, const char *path);
void diff_emit_submodule_pipethrough(struct diff_options *o,
const char *line, int len);
+struct diffstat_t {
+ int nr;
+ int alloc;
+ struct diffstat_file {
+ char *from_name;
+ char *name;
+ char *print_name;
+ const char *comments;
+ unsigned is_unmerged:1;
+ unsigned is_binary:1;
+ unsigned is_renamed:1;
+ unsigned is_interesting:1;
+ uintmax_t added, deleted;
+ } **files;
+};
+
enum color_diff {
DIFF_RESET = 0,
DIFF_CONTEXT = 1,
DIFF_FILE_NEW_MOVED = 13,
DIFF_FILE_NEW_MOVED_ALT = 14,
DIFF_FILE_NEW_MOVED_DIM = 15,
- DIFF_FILE_NEW_MOVED_ALT_DIM = 16
+ DIFF_FILE_NEW_MOVED_ALT_DIM = 16,
+ DIFF_CONTEXT_DIM = 17,
+ DIFF_FILE_OLD_DIM = 18,
+ DIFF_FILE_NEW_DIM = 19,
+ DIFF_CONTEXT_BOLD = 20,
+ DIFF_FILE_OLD_BOLD = 21,
+ DIFF_FILE_NEW_BOLD = 22,
};
+
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)
extern const char mime_boundary_leader[];
-extern struct combine_diff_path *diff_tree_paths(
+struct combine_diff_path *diff_tree_paths(
struct combine_diff_path *p, const struct object_id *oid,
const struct object_id **parents_oid, int nparent,
struct strbuf *base, struct diff_options *opt);
-extern int diff_tree_oid(const struct object_id *old_oid,
- const struct object_id *new_oid,
- const char *base, struct diff_options *opt);
-extern int diff_root_tree_oid(const struct object_id *new_oid, const char *base,
- struct diff_options *opt);
+int diff_tree_oid(const struct object_id *old_oid,
+ const struct object_id *new_oid,
+ const char *base, struct diff_options *opt);
+int diff_root_tree_oid(const struct object_id *new_oid, const char *base,
+ struct diff_options *opt);
struct combine_diff_path {
struct combine_diff_path *next;
char status;
unsigned int mode;
struct object_id oid;
+ struct strbuf path;
} parent[FLEX_ARRAY];
};
#define combine_diff_path_size(n, l) \
st_add4(sizeof(struct combine_diff_path), (l), 1, \
st_mult(sizeof(struct combine_diff_parent), (n)))
-extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
- int dense, struct rev_info *);
+void show_combined_diff(struct combine_diff_path *elem, int num_parent,
+ int dense, struct rev_info *);
-extern void diff_tree_combined(const struct object_id *oid, const struct oid_array *parents, int dense, struct rev_info *rev);
+void diff_tree_combined(const struct object_id *oid, const struct oid_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_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 *);
+int diff_can_quit_early(struct diff_options *);
+
+void diff_addremove(struct diff_options *,
+ int addremove,
+ unsigned mode,
+ const struct object_id *oid,
+ int oid_valid,
+ const char *fullpath, unsigned dirty_submodule);
-extern void diff_addremove(struct diff_options *,
- int addremove,
- unsigned mode,
- const struct object_id *oid,
- int oid_valid,
- const char *fullpath, unsigned dirty_submodule);
+void diff_change(struct diff_options *,
+ unsigned mode1, unsigned mode2,
+ const struct object_id *old_oid,
+ const struct object_id *new_oid,
+ int old_oid_valid, int new_oid_valid,
+ const char *fullpath,
+ unsigned dirty_submodule1, unsigned dirty_submodule2);
-extern void diff_change(struct diff_options *,
- unsigned mode1, unsigned mode2,
- const struct object_id *old_oid,
- const struct object_id *new_oid,
- int old_oid_valid, int new_oid_valid,
- const char *fullpath,
- unsigned dirty_submodule1, unsigned dirty_submodule2);
+struct diff_filepair *diff_unmerge(struct diff_options *, const char *path);
-extern struct diff_filepair *diff_unmerge(struct diff_options *, const char *path);
+void compute_diffstat(struct diff_options *options, struct diffstat_t *diffstat,
+ struct diff_queue_struct *q);
+void free_diffstat_info(struct diffstat_t *diffstat);
#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 stuck 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_heuristic_config(const char *var, const char *value, void *cb);
-extern void init_diff_ui_defaults(void);
-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, const char *);
-extern void diff_setup_done(struct diff_options *);
+int parse_long_opt(const char *opt, const char **argv,
+ const char **optarg);
+
+int git_diff_basic_config(const char *var, const char *value, void *cb);
+int git_diff_heuristic_config(const char *var, const char *value, void *cb);
+void init_diff_ui_defaults(void);
+int git_diff_ui_config(const char *var, const char *value, void *cb);
+#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
+#define diff_setup(diffopts) repo_diff_setup(the_repository, diffopts)
+#endif
+void repo_diff_setup(struct repository *, struct diff_options *);
+int diff_opt_parse(struct diff_options *, const char **, int, const char *);
+void diff_setup_done(struct diff_options *);
+int git_config_rename(const char *var, const char *value);
#define DIFF_DETECT_RENAME 1
#define DIFF_DETECT_COPY 2
#define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */
#define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */
+#define DIFF_PICKAXE_KIND_OBJFIND 16 /* specific object IDs */
+
+#define DIFF_PICKAXE_KINDS_MASK (DIFF_PICKAXE_KIND_S | \
+ DIFF_PICKAXE_KIND_G | \
+ DIFF_PICKAXE_KIND_OBJFIND)
+
+#define DIFF_PICKAXE_IGNORE_CASE 32
-extern void diffcore_std(struct diff_options *);
-extern void diffcore_fix_diff_index(struct diff_options *);
+void diffcore_std(struct diff_options *);
+void diffcore_fix_diff_index(void);
#define COMMON_DIFF_OPTIONS_HELP \
"\ncommon diff options:\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);
+int diff_queue_is_empty(void);
+void diff_flush(struct diff_options*);
+void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc);
/* diff-raw status letters */
#define DIFF_STATUS_ADDED 'A'
* This is different from find_unique_abbrev() in that
* it stuffs the result with dots for alignment.
*/
-extern const char *diff_aligned_abbrev(const struct object_id *sha1, int);
+const char *diff_aligned_abbrev(const struct object_id *sha1, 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);
+int run_diff_files(struct rev_info *revs, unsigned int option);
+int run_diff_index(struct rev_info *revs, int cached);
-extern int do_diff_cache(const struct object_id *, struct diff_options *);
-extern int diff_flush_patch_id(struct diff_options *, struct object_id *, int);
+int do_diff_cache(const struct object_id *, struct diff_options *);
+int diff_flush_patch_id(struct diff_options *, struct object_id *, int, int);
+void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx);
-extern int diff_result_code(struct diff_options *, int);
+int diff_result_code(struct diff_options *, int);
-extern void diff_no_index(struct rev_info *, int, const char **);
+int diff_no_index(struct rev_info *,
+ int implicit_no_index, int, const char **);
-extern int index_differs_from(const char *def, int diff_flags, int ita_invisible_in_index);
+int index_differs_from(struct repository *r, const char *def,
+ const struct diff_flags *flags,
+ int ita_invisible_in_index);
/*
* Fill the contents of the filespec "df", respecting any textconv defined by
* struct. If it is non-NULL, then "outbuf" points to a newly allocated buffer
* that should be freed by the caller.
*/
-extern size_t fill_textconv(struct userdiff_driver *driver,
- struct diff_filespec *df,
- char **outbuf);
+size_t fill_textconv(struct repository *r,
+ struct userdiff_driver *driver,
+ struct diff_filespec *df,
+ char **outbuf);
/*
* Look up the userdiff driver for the given filespec, and return it if
* and only if it has textconv enabled (otherwise return NULL). The result
* can be passed to fill_textconv().
*/
-extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
+struct userdiff_driver *get_textconv(struct repository *r,
+ struct diff_filespec *one);
/*
* Prepare diff_filespec and convert it using diff textconv API
* if the textconv driver exists.
* Return 1 if the conversion succeeds, 0 otherwise.
*/
-extern int textconv_object(const char *path, unsigned mode, const struct object_id *oid, int oid_valid, char **buf, unsigned long *buf_size);
+int textconv_object(struct repository *repo,
+ const char *path,
+ unsigned mode,
+ const struct object_id *oid, int oid_valid,
+ char **buf, unsigned long *buf_size);
-extern int parse_rename_score(const char **cp_p);
+int parse_rename_score(const char **cp_p);
-extern long parse_algorithm_value(const char *value);
+long parse_algorithm_value(const char *value);
-extern void print_stat_summary(FILE *fp, int files,
- int insertions, int deletions);
-extern void setup_diff_pager(struct diff_options *);
+void print_stat_summary(FILE *fp, int files,
+ int insertions, int deletions);
+void setup_diff_pager(struct diff_options *);
#endif /* DIFF_H */
projects / thirdparty / git.git / blobdiff