Merge branch 'cb/doco-mono'
[git] / builtin / range-diff.c
1 #include "cache.h"
2 #include "builtin.h"
3 #include "parse-options.h"
4 #include "range-diff.h"
5 #include "config.h"
6
7 static const char * const builtin_range_diff_usage[] = {
8 N_("git range-diff [<options>] <old-base>..<old-tip> <new-base>..<new-tip>"),
9 N_("git range-diff [<options>] <old-tip>...<new-tip>"),
10 N_("git range-diff [<options>] <base> <old-tip> <new-tip>"),
11 NULL
12 };
13
14 int cmd_range_diff(int argc, const char **argv, const char *prefix)
15 {
16         int creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT;
17         struct diff_options diffopt = { NULL };
18         int simple_color = -1;
19         struct option options[] = {
20                 OPT_INTEGER(0, "creation-factor", &creation_factor,
21                             N_("Percentage by which creation is weighted")),
22                 OPT_BOOL(0, "no-dual-color", &simple_color,
23                             N_("use simple diff colors")),
24                 OPT_END()
25         };
26         int i, j, res = 0;
27         struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
28
29         git_config(git_diff_ui_config, NULL);
30
31         repo_diff_setup(the_repository, &diffopt);
32
33         argc = parse_options(argc, argv, NULL, options,
34                              builtin_range_diff_usage, PARSE_OPT_KEEP_UNKNOWN |
35                              PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
36
37         for (i = j = 1; i < argc && strcmp("--", argv[i]); ) {
38                 int c = diff_opt_parse(&diffopt, argv + i, argc - i, prefix);
39
40                 if (!c)
41                         argv[j++] = argv[i++];
42                 else
43                         i += c;
44         }
45         while (i < argc)
46                 argv[j++] = argv[i++];
47         argc = j;
48         diff_setup_done(&diffopt);
49
50         /* Make sure that there are no unparsed options */
51         argc = parse_options(argc, argv, NULL,
52                              options + ARRAY_SIZE(options) - 1, /* OPT_END */
53                              builtin_range_diff_usage, 0);
54
55         /* force color when --dual-color was used */
56         if (!simple_color)
57                 diffopt.use_color = 1;
58
59         if (argc == 2) {
60                 if (!strstr(argv[0], ".."))
61                         die(_("no .. in range: '%s'"), argv[0]);
62                 strbuf_addstr(&range1, argv[0]);
63
64                 if (!strstr(argv[1], ".."))
65                         die(_("no .. in range: '%s'"), argv[1]);
66                 strbuf_addstr(&range2, argv[1]);
67         } else if (argc == 3) {
68                 strbuf_addf(&range1, "%s..%s", argv[0], argv[1]);
69                 strbuf_addf(&range2, "%s..%s", argv[0], argv[2]);
70         } else if (argc == 1) {
71                 const char *b = strstr(argv[0], "..."), *a = argv[0];
72                 int a_len;
73
74                 if (!b) {
75                         error(_("single arg format must be symmetric range"));
76                         usage_with_options(builtin_range_diff_usage, options);
77                 }
78
79                 a_len = (int)(b - a);
80                 if (!a_len) {
81                         a = "HEAD";
82                         a_len = strlen(a);
83                 }
84                 b += 3;
85                 if (!*b)
86                         b = "HEAD";
87                 strbuf_addf(&range1, "%s..%.*s", b, a_len, a);
88                 strbuf_addf(&range2, "%.*s..%s", a_len, a, b);
89         } else {
90                 error(_("need two commit ranges"));
91                 usage_with_options(builtin_range_diff_usage, options);
92         }
93
94         res = show_range_diff(range1.buf, range2.buf, creation_factor,
95                               simple_color < 1, &diffopt);
96
97         strbuf_release(&range1);
98         strbuf_release(&range2);
99
100         return res;
101 }