Merge branch 'en/sequencer-empty-edit-result-aborts'
[git] / builtin / commit-graph.c
1 #include "builtin.h"
2 #include "config.h"
3 #include "dir.h"
4 #include "lockfile.h"
5 #include "parse-options.h"
6 #include "repository.h"
7 #include "commit-graph.h"
8
9 static char const * const builtin_commit_graph_usage[] = {
10         N_("git commit-graph [--object-dir <objdir>]"),
11         N_("git commit-graph read [--object-dir <objdir>]"),
12         N_("git commit-graph verify [--object-dir <objdir>]"),
13         N_("git commit-graph write [--object-dir <objdir>] [--append] [--reachable|--stdin-packs|--stdin-commits]"),
14         NULL
15 };
16
17 static const char * const builtin_commit_graph_verify_usage[] = {
18         N_("git commit-graph verify [--object-dir <objdir>]"),
19         NULL
20 };
21
22 static const char * const builtin_commit_graph_read_usage[] = {
23         N_("git commit-graph read [--object-dir <objdir>]"),
24         NULL
25 };
26
27 static const char * const builtin_commit_graph_write_usage[] = {
28         N_("git commit-graph write [--object-dir <objdir>] [--append] [--reachable|--stdin-packs|--stdin-commits]"),
29         NULL
30 };
31
32 static struct opts_commit_graph {
33         const char *obj_dir;
34         int reachable;
35         int stdin_packs;
36         int stdin_commits;
37         int append;
38 } opts;
39
40
41 static int graph_verify(int argc, const char **argv)
42 {
43         struct commit_graph *graph = NULL;
44         char *graph_name;
45
46         static struct option builtin_commit_graph_verify_options[] = {
47                 OPT_STRING(0, "object-dir", &opts.obj_dir,
48                            N_("dir"),
49                            N_("The object directory to store the graph")),
50                 OPT_END(),
51         };
52
53         argc = parse_options(argc, argv, NULL,
54                              builtin_commit_graph_verify_options,
55                              builtin_commit_graph_verify_usage, 0);
56
57         if (!opts.obj_dir)
58                 opts.obj_dir = get_object_directory();
59
60         graph_name = get_commit_graph_filename(opts.obj_dir);
61         graph = load_commit_graph_one(graph_name);
62         FREE_AND_NULL(graph_name);
63
64         if (!graph)
65                 return 0;
66
67         return verify_commit_graph(the_repository, graph);
68 }
69
70 static int graph_read(int argc, const char **argv)
71 {
72         struct commit_graph *graph = NULL;
73         char *graph_name;
74
75         static struct option builtin_commit_graph_read_options[] = {
76                 OPT_STRING(0, "object-dir", &opts.obj_dir,
77                         N_("dir"),
78                         N_("The object directory to store the graph")),
79                 OPT_END(),
80         };
81
82         argc = parse_options(argc, argv, NULL,
83                              builtin_commit_graph_read_options,
84                              builtin_commit_graph_read_usage, 0);
85
86         if (!opts.obj_dir)
87                 opts.obj_dir = get_object_directory();
88
89         graph_name = get_commit_graph_filename(opts.obj_dir);
90         graph = load_commit_graph_one(graph_name);
91
92         if (!graph) {
93                 UNLEAK(graph_name);
94                 die("graph file %s does not exist", graph_name);
95         }
96
97         FREE_AND_NULL(graph_name);
98
99         printf("header: %08x %d %d %d %d\n",
100                 ntohl(*(uint32_t*)graph->data),
101                 *(unsigned char*)(graph->data + 4),
102                 *(unsigned char*)(graph->data + 5),
103                 *(unsigned char*)(graph->data + 6),
104                 *(unsigned char*)(graph->data + 7));
105         printf("num_commits: %u\n", graph->num_commits);
106         printf("chunks:");
107
108         if (graph->chunk_oid_fanout)
109                 printf(" oid_fanout");
110         if (graph->chunk_oid_lookup)
111                 printf(" oid_lookup");
112         if (graph->chunk_commit_data)
113                 printf(" commit_metadata");
114         if (graph->chunk_large_edges)
115                 printf(" large_edges");
116         printf("\n");
117
118         free_commit_graph(graph);
119
120         return 0;
121 }
122
123 static int graph_write(int argc, const char **argv)
124 {
125         struct string_list *pack_indexes = NULL;
126         struct string_list *commit_hex = NULL;
127         struct string_list lines;
128
129         static struct option builtin_commit_graph_write_options[] = {
130                 OPT_STRING(0, "object-dir", &opts.obj_dir,
131                         N_("dir"),
132                         N_("The object directory to store the graph")),
133                 OPT_BOOL(0, "reachable", &opts.reachable,
134                         N_("start walk at all refs")),
135                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
136                         N_("scan pack-indexes listed by stdin for commits")),
137                 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
138                         N_("start walk at commits listed by stdin")),
139                 OPT_BOOL(0, "append", &opts.append,
140                         N_("include all commits already in the commit-graph file")),
141                 OPT_END(),
142         };
143
144         argc = parse_options(argc, argv, NULL,
145                              builtin_commit_graph_write_options,
146                              builtin_commit_graph_write_usage, 0);
147
148         if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
149                 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
150         if (!opts.obj_dir)
151                 opts.obj_dir = get_object_directory();
152
153         if (opts.reachable) {
154                 write_commit_graph_reachable(opts.obj_dir, opts.append);
155                 return 0;
156         }
157
158         string_list_init(&lines, 0);
159         if (opts.stdin_packs || opts.stdin_commits) {
160                 struct strbuf buf = STRBUF_INIT;
161
162                 while (strbuf_getline(&buf, stdin) != EOF)
163                         string_list_append(&lines, strbuf_detach(&buf, NULL));
164
165                 if (opts.stdin_packs)
166                         pack_indexes = &lines;
167                 if (opts.stdin_commits)
168                         commit_hex = &lines;
169         }
170
171         write_commit_graph(opts.obj_dir,
172                            pack_indexes,
173                            commit_hex,
174                            opts.append);
175
176         string_list_clear(&lines, 0);
177         return 0;
178 }
179
180 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
181 {
182         static struct option builtin_commit_graph_options[] = {
183                 OPT_STRING(0, "object-dir", &opts.obj_dir,
184                         N_("dir"),
185                         N_("The object directory to store the graph")),
186                 OPT_END(),
187         };
188
189         if (argc == 2 && !strcmp(argv[1], "-h"))
190                 usage_with_options(builtin_commit_graph_usage,
191                                    builtin_commit_graph_options);
192
193         git_config(git_default_config, NULL);
194         argc = parse_options(argc, argv, prefix,
195                              builtin_commit_graph_options,
196                              builtin_commit_graph_usage,
197                              PARSE_OPT_STOP_AT_NON_OPTION);
198
199         if (argc > 0) {
200                 if (!strcmp(argv[0], "read"))
201                         return graph_read(argc, argv);
202                 if (!strcmp(argv[0], "verify"))
203                         return graph_verify(argc, argv);
204                 if (!strcmp(argv[0], "write"))
205                         return graph_write(argc, argv);
206         }
207
208         usage_with_options(builtin_commit_graph_usage,
209                            builtin_commit_graph_options);
210 }