reflog --expire-unreachable: avoid merge-base computation
[git] / revision.h
1 #ifndef REVISION_H
2 #define REVISION_H
3
4 #include "parse-options.h"
5 #include "grep.h"
6
7 #define SEEN            (1u<<0)
8 #define UNINTERESTING   (1u<<1)
9 #define TREESAME        (1u<<2)
10 #define SHOWN           (1u<<3)
11 #define TMP_MARK        (1u<<4) /* for isolated cases; clean after use */
12 #define BOUNDARY        (1u<<5)
13 #define CHILD_SHOWN     (1u<<6)
14 #define ADDED           (1u<<7) /* Parents already parsed and added? */
15 #define SYMMETRIC_LEFT  (1u<<8)
16 #define ALL_REV_FLAGS   ((1u<<9)-1)
17
18 #define DECORATE_SHORT_REFS     1
19 #define DECORATE_FULL_REFS      2
20
21 struct rev_info;
22 struct log_info;
23
24 struct rev_info {
25         /* Starting list */
26         struct commit_list *commits;
27         struct object_array pending;
28
29         /* Parents of shown commits */
30         struct object_array boundary_commits;
31
32         /* Basic information */
33         const char *prefix;
34         const char *def;
35         void *prune_data;
36         unsigned int early_output;
37
38         /* Traversal flags */
39         unsigned int    dense:1,
40                         prune:1,
41                         no_merges:1,
42                         merges_only:1,
43                         no_walk:1,
44                         show_all:1,
45                         remove_empty_trees:1,
46                         simplify_history:1,
47                         lifo:1,
48                         topo_order:1,
49                         simplify_merges:1,
50                         simplify_by_decoration:1,
51                         tag_objects:1,
52                         tree_objects:1,
53                         blob_objects:1,
54                         edge_hint:1,
55                         limited:1,
56                         unpacked:1,
57                         boundary:2,
58                         left_right:1,
59                         rewrite_parents:1,
60                         print_parents:1,
61                         show_source:1,
62                         show_decorations:1,
63                         reverse:1,
64                         reverse_output_stage:1,
65                         cherry_pick:1,
66                         bisect:1,
67                         first_parent_only:1;
68
69         /* Diff flags */
70         unsigned int    diff:1,
71                         full_diff:1,
72                         show_root_diff:1,
73                         no_commit_id:1,
74                         verbose_header:1,
75                         ignore_merges:1,
76                         combine_merges:1,
77                         dense_combined_merges:1,
78                         always_show_header:1;
79
80         /* Format info */
81         unsigned int    shown_one:1,
82                         show_merge:1,
83                         abbrev_commit:1,
84                         use_terminator:1,
85                         missing_newline:1,
86                         date_mode_explicit:1;
87         unsigned int    disable_stdin:1;
88
89         enum date_mode date_mode;
90
91         unsigned int    abbrev;
92         enum cmit_fmt   commit_format;
93         struct log_info *loginfo;
94         int             nr, total;
95         const char      *mime_boundary;
96         const char      *patch_suffix;
97         int             numbered_files;
98         char            *message_id;
99         struct string_list *ref_message_ids;
100         const char      *add_signoff;
101         const char      *extra_headers;
102         const char      *log_reencode;
103         const char      *subject_prefix;
104         int             no_inline;
105         int             show_log_size;
106
107         /* Filter by commit log message */
108         struct grep_opt grep_filter;
109
110         /* Display history graph */
111         struct git_graph *graph;
112
113         /* special limits */
114         int skip_count;
115         int max_count;
116         unsigned long max_age;
117         unsigned long min_age;
118
119         /* diff info for patches and for paths limiting */
120         struct diff_options diffopt;
121         struct diff_options pruning;
122
123         struct reflog_walk_info *reflog_info;
124         struct decoration children;
125         struct decoration merge_simplification;
126 };
127
128 #define REV_TREE_SAME           0
129 #define REV_TREE_NEW            1       /* Only new files */
130 #define REV_TREE_OLD            2       /* Only files removed */
131 #define REV_TREE_DIFFERENT      3       /* Mixed changes */
132
133 /* revision.c */
134 typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
135 extern volatile show_early_output_fn_t show_early_output;
136
137 extern void init_revisions(struct rev_info *revs, const char *prefix);
138 extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def);
139 extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
140                                  const struct option *options,
141                                  const char * const usagestr[]);
142 extern int handle_revision_arg(const char *arg, struct rev_info *revs,int flags,int cant_be_filename);
143
144 extern int prepare_revision_walk(struct rev_info *revs);
145 extern struct commit *get_revision(struct rev_info *revs);
146
147 extern void mark_parents_uninteresting(struct commit *commit);
148 extern void mark_tree_uninteresting(struct tree *tree);
149
150 struct name_path {
151         struct name_path *up;
152         int elem_len;
153         const char *elem;
154 };
155
156 char *path_name(const struct name_path *path, const char *name);
157
158 extern void add_object(struct object *obj,
159                        struct object_array *p,
160                        struct name_path *path,
161                        const char *name);
162
163 extern void add_pending_object(struct rev_info *revs, struct object *obj, const char *name);
164
165 extern void add_head_to_pending(struct rev_info *);
166
167 enum commit_action {
168         commit_ignore,
169         commit_show,
170         commit_error
171 };
172
173 extern enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit);
174 extern enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit);
175
176 #endif