root/revision.h

INCLUDED FROM

#ifndef REVISION_H
#define REVISION_H

#include "parse-options.h"
#include "grep.h"
#include "notes.h"
#include "commit.h"
#include "diff.h"

/* Remember to update object flag allocation in object.h */
#define SEEN            (1u<<0)
#define UNINTERESTING   (1u<<1)
#define TREESAME        (1u<<2)
#define SHOWN           (1u<<3)
#define TMP_MARK        (1u<<4) /* for isolated cases; clean after use */
#define BOUNDARY        (1u<<5)
#define CHILD_SHOWN     (1u<<6)
#define ADDED           (1u<<7) /* Parents already parsed and added? */
#define SYMMETRIC_LEFT  (1u<<8)
#define PATCHSAME       (1u<<9)
#define BOTTOM          (1u<<10)
#define TRACK_LINEAR    (1u<<26)
#define ALL_REV_FLAGS   (((1u<<11)-1) | TRACK_LINEAR)

#define DECORATE_SHORT_REFS     1
#define DECORATE_FULL_REFS      2

struct rev_info;
struct log_info;
struct string_list;
struct saved_parents;

struct rev_cmdline_info {
        unsigned int nr;
        unsigned int alloc;
        struct rev_cmdline_entry {
                struct object *item;
                const char *name;
                enum {
                        REV_CMD_REF,
                        REV_CMD_PARENTS_ONLY,
                        REV_CMD_LEFT,
                        REV_CMD_RIGHT,
                        REV_CMD_MERGE_BASE,
                        REV_CMD_REV
                } whence;
                unsigned flags;
        } *rev;
};

#define REVISION_WALK_WALK 0
#define REVISION_WALK_NO_WALK_SORTED 1
#define REVISION_WALK_NO_WALK_UNSORTED 2

struct rev_info {
        /* Starting list */
        struct commit_list *commits;
        struct object_array pending;

        /* Parents of shown commits */
        struct object_array boundary_commits;

        /* The end-points specified by the end user */
        struct rev_cmdline_info cmdline;

        /* excluding from --branches, --refs, etc. expansion */
        struct string_list *ref_excludes;

        /* Basic information */
        const char *prefix;
        const char *def;
        struct pathspec prune_data;

        /* topo-sort */
        enum rev_sort_order sort_order;

        unsigned int    early_output:1,
                        ignore_missing:1,
                        ignore_missing_links:1;

        /* Traversal flags */
        unsigned int    dense:1,
                        prune:1,
                        no_walk:2,
                        show_all:1,
                        remove_empty_trees:1,
                        simplify_history:1,
                        topo_order:1,
                        simplify_merges:1,
                        simplify_by_decoration:1,
                        tag_objects:1,
                        tree_objects:1,
                        blob_objects:1,
                        verify_objects:1,
                        edge_hint:1,
                        edge_hint_aggressive:1,
                        limited:1,
                        unpacked:1,
                        boundary:2,
                        count:1,
                        left_right:1,
                        left_only:1,
                        right_only:1,
                        rewrite_parents:1,
                        print_parents:1,
                        show_source:1,
                        show_decorations:1,
                        reverse:1,
                        reverse_output_stage:1,
                        cherry_pick:1,
                        cherry_mark:1,
                        bisect:1,
                        ancestry_path:1,
                        first_parent_only:1,
                        line_level_traverse:1;

        /* Diff flags */
        unsigned int    diff:1,
                        full_diff:1,
                        show_root_diff:1,
                        no_commit_id:1,
                        verbose_header:1,
                        ignore_merges:1,
                        combine_merges:1,
                        dense_combined_merges:1,
                        always_show_header:1;

        /* Format info */
        unsigned int    shown_one:1,
                        shown_dashes:1,
                        show_merge:1,
                        show_notes:1,
                        show_notes_given:1,
                        show_signature:1,
                        pretty_given:1,
                        abbrev_commit:1,
                        abbrev_commit_given:1,
                        use_terminator:1,
                        missing_newline:1,
                        date_mode_explicit:1,
                        preserve_subject:1;
        unsigned int    disable_stdin:1;
        unsigned int    leak_pending:1;
        /* --show-linear-break */
        unsigned int    track_linear:1,
                        track_first_time:1,
                        linear:1;

        struct date_mode date_mode;

        unsigned int    abbrev;
        enum cmit_fmt   commit_format;
        struct log_info *loginfo;
        int             nr, total;
        const char      *mime_boundary;
        const char      *patch_suffix;
        int             numbered_files;
        int             reroll_count;
        char            *message_id;
        struct ident_split from_ident;
        struct string_list *ref_message_ids;
        int             add_signoff;
        const char      *extra_headers;
        const char      *log_reencode;
        const char      *subject_prefix;
        int             no_inline;
        int             show_log_size;
        struct string_list *mailmap;

        /* Filter by commit log message */
        struct grep_opt grep_filter;
        /* Negate the match of grep_filter */
        int invert_grep;

        /* Display history graph */
        struct git_graph *graph;

        /* special limits */
        int skip_count;
        int max_count;
        unsigned long max_age;
        unsigned long min_age;
        int min_parents;
        int max_parents;
        int (*include_check)(struct commit *, void *);
        void *include_check_data;

        /* diff info for patches and for paths limiting */
        struct diff_options diffopt;
        struct diff_options pruning;

        struct reflog_walk_info *reflog_info;
        struct decoration children;
        struct decoration merge_simplification;
        struct decoration treesame;

        /* notes-specific options: which refs to show */
        struct display_notes_opt notes_opt;

        /* commit counts */
        int count_left;
        int count_right;
        int count_same;

        /* line level range that we are chasing */
        struct decoration line_log_data;

        /* copies of the parent lists, for --full-diff display */
        struct saved_parents *saved_parents_slab;

        struct commit_list *previous_parents;
        const char *break_bar;
};

extern int ref_excluded(struct string_list *, const char *path);
void clear_ref_exclusion(struct string_list **);
void add_ref_exclusion(struct string_list **, const char *exclude);


#define REV_TREE_SAME           0
#define REV_TREE_NEW            1       /* Only new files */
#define REV_TREE_OLD            2       /* Only files removed */
#define REV_TREE_DIFFERENT      3       /* Mixed changes */

/* revision.c */
typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
extern volatile show_early_output_fn_t show_early_output;

struct setup_revision_opt {
        const char *def;
        void (*tweak)(struct rev_info *, struct setup_revision_opt *);
        const char *submodule;
        int assume_dashdash;
        unsigned revarg_opt;
};

extern void init_revisions(struct rev_info *revs, const char *prefix);
extern int setup_revisions(int argc, const char **argv, struct rev_info *revs,
                           struct setup_revision_opt *);
extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
                               const struct option *options,
                               const char * const usagestr[]);
#define REVARG_CANNOT_BE_FILENAME 01
#define REVARG_COMMITTISH 02
extern int handle_revision_arg(const char *arg, struct rev_info *revs,
                               int flags, unsigned revarg_opt);

extern void reset_revision_walk(void);
extern int prepare_revision_walk(struct rev_info *revs);
extern struct commit *get_revision(struct rev_info *revs);
extern char *get_revision_mark(const struct rev_info *revs,
                               const struct commit *commit);
extern void put_revision_mark(const struct rev_info *revs,
                              const struct commit *commit);

extern void mark_parents_uninteresting(struct commit *commit);
extern void mark_tree_uninteresting(struct tree *tree);

struct name_path {
        struct name_path *up;
        int elem_len;
        const char *elem;
};

char *path_name(const struct name_path *path, const char *name);

extern void show_object_with_name(FILE *, struct object *,
                                  const struct name_path *, const char *);

extern void add_pending_object(struct rev_info *revs,
                               struct object *obj, const char *name);
extern void add_pending_sha1(struct rev_info *revs,
                             const char *name, const unsigned char *sha1,
                             unsigned int flags);

extern void add_head_to_pending(struct rev_info *);
extern void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
extern void add_index_objects_to_pending(struct rev_info *, unsigned int flags);

enum commit_action {
        commit_ignore,
        commit_show,
        commit_error
};

extern enum commit_action get_commit_action(struct rev_info *revs,
                                            struct commit *commit);
extern enum commit_action simplify_commit(struct rev_info *revs,
                                          struct commit *commit);

enum rewrite_result {
        rewrite_one_ok,
        rewrite_one_noparents,
        rewrite_one_error
};

typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);

extern int rewrite_parents(struct rev_info *revs, struct commit *commit,
        rewrite_parent_fn_t rewrite_parent);

/*
 * The log machinery saves the original parent list so that
 * get_saved_parents() can later tell what the real parents of the
 * commits are, when commit->parents has been modified by history
 * simpification.
 *
 * get_saved_parents() will transparently return commit->parents if
 * history simplification is off.
 */
extern struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);

#endif