Merge branch 'ds/commit-graph-leakfix'
[git/git.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 UNLEAK(graph);
68 return verify_commit_graph(the_repository, graph);
69 }
70
71 static int graph_read(int argc, const char **argv)
72 {
73 struct commit_graph *graph = NULL;
74 char *graph_name;
75
76 static struct option builtin_commit_graph_read_options[] = {
77 OPT_STRING(0, "object-dir", &opts.obj_dir,
78 N_("dir"),
79 N_("The object directory to store the graph")),
80 OPT_END(),
81 };
82
83 argc = parse_options(argc, argv, NULL,
84 builtin_commit_graph_read_options,
85 builtin_commit_graph_read_usage, 0);
86
87 if (!opts.obj_dir)
88 opts.obj_dir = get_object_directory();
89
90 graph_name = get_commit_graph_filename(opts.obj_dir);
91 graph = load_commit_graph_one(graph_name);
92
93 if (!graph)
94 die("graph file %s does not exist", graph_name);
95
96 FREE_AND_NULL(graph_name);
97
98 printf("header: %08x %d %d %d %d\n",
99 ntohl(*(uint32_t*)graph->data),
100 *(unsigned char*)(graph->data + 4),
101 *(unsigned char*)(graph->data + 5),
102 *(unsigned char*)(graph->data + 6),
103 *(unsigned char*)(graph->data + 7));
104 printf("num_commits: %u\n", graph->num_commits);
105 printf("chunks:");
106
107 if (graph->chunk_oid_fanout)
108 printf(" oid_fanout");
109 if (graph->chunk_oid_lookup)
110 printf(" oid_lookup");
111 if (graph->chunk_commit_data)
112 printf(" commit_metadata");
113 if (graph->chunk_large_edges)
114 printf(" large_edges");
115 printf("\n");
116
117 UNLEAK(graph);
118
119 return 0;
120 }
121
122 extern int read_replace_refs;
123
124 static int graph_write(int argc, const char **argv)
125 {
126 struct string_list *pack_indexes = NULL;
127 struct string_list *commit_hex = NULL;
128 struct string_list lines;
129
130 static struct option builtin_commit_graph_write_options[] = {
131 OPT_STRING(0, "object-dir", &opts.obj_dir,
132 N_("dir"),
133 N_("The object directory to store the graph")),
134 OPT_BOOL(0, "reachable", &opts.reachable,
135 N_("start walk at all refs")),
136 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
137 N_("scan pack-indexes listed by stdin for commits")),
138 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
139 N_("start walk at commits listed by stdin")),
140 OPT_BOOL(0, "append", &opts.append,
141 N_("include all commits already in the commit-graph file")),
142 OPT_END(),
143 };
144
145 argc = parse_options(argc, argv, NULL,
146 builtin_commit_graph_write_options,
147 builtin_commit_graph_write_usage, 0);
148
149 if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
150 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
151 if (!opts.obj_dir)
152 opts.obj_dir = get_object_directory();
153
154 read_replace_refs = 0;
155
156 if (opts.reachable) {
157 write_commit_graph_reachable(opts.obj_dir, opts.append, 1);
158 return 0;
159 }
160
161 string_list_init(&lines, 0);
162 if (opts.stdin_packs || opts.stdin_commits) {
163 struct strbuf buf = STRBUF_INIT;
164
165 while (strbuf_getline(&buf, stdin) != EOF)
166 string_list_append(&lines, strbuf_detach(&buf, NULL));
167
168 if (opts.stdin_packs)
169 pack_indexes = &lines;
170 if (opts.stdin_commits)
171 commit_hex = &lines;
172
173 UNLEAK(buf);
174 }
175
176 write_commit_graph(opts.obj_dir,
177 pack_indexes,
178 commit_hex,
179 opts.append,
180 1);
181
182 UNLEAK(lines);
183 return 0;
184 }
185
186 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
187 {
188 static struct option builtin_commit_graph_options[] = {
189 OPT_STRING(0, "object-dir", &opts.obj_dir,
190 N_("dir"),
191 N_("The object directory to store the graph")),
192 OPT_END(),
193 };
194
195 if (argc == 2 && !strcmp(argv[1], "-h"))
196 usage_with_options(builtin_commit_graph_usage,
197 builtin_commit_graph_options);
198
199 git_config(git_default_config, NULL);
200 argc = parse_options(argc, argv, prefix,
201 builtin_commit_graph_options,
202 builtin_commit_graph_usage,
203 PARSE_OPT_STOP_AT_NON_OPTION);
204
205 if (argc > 0) {
206 if (!strcmp(argv[0], "read"))
207 return graph_read(argc, argv);
208 if (!strcmp(argv[0], "verify"))
209 return graph_verify(argc, argv);
210 if (!strcmp(argv[0], "write"))
211 return graph_write(argc, argv);
212 }
213
214 usage_with_options(builtin_commit_graph_usage,
215 builtin_commit_graph_options);
216 }