git.oblomov.eu Git - git/blob - 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 = 60;
  17         struct diff_options diffopt = { NULL };
  18         struct option options[] = {
  19                 OPT_INTEGER(0, "creation-factor", &creation_factor,
  20                             N_("Percentage by which creation is weighted")),
  21                 OPT_END()
  22         };
  23         int i, j, res = 0;
  24         struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
  25
  26         git_config(git_diff_ui_config, NULL);
  27
  28         diff_setup(&diffopt);
  29         diffopt.output_format = DIFF_FORMAT_PATCH;
  30
  31         argc = parse_options(argc, argv, NULL, options,
  32                              builtin_range_diff_usage, PARSE_OPT_KEEP_UNKNOWN |
  33                              PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
  34
  35         for (i = j = 1; i < argc && strcmp("--", argv[i]); ) {
  36                 int c = diff_opt_parse(&diffopt, argv + i, argc - i, prefix);
  37
  38                 if (!c)
  39                         argv[j++] = argv[i++];
  40                 else
  41                         i += c;
  42         }
  43         while (i < argc)
  44                 argv[j++] = argv[i++];
  45         argc = j;
  46         diff_setup_done(&diffopt);
  47
  48         /* Make sure that there are no unparsed options */
  49         argc = parse_options(argc, argv, NULL,
  50                              options + ARRAY_SIZE(options) - 1, /* OPT_END */
  51                              builtin_range_diff_usage, 0);
  52
  53         if (argc == 2) {
  54                 if (!strstr(argv[0], ".."))
  55                         die(_("no .. in range: '%s'"), argv[0]);
  56                 strbuf_addstr(&range1, argv[0]);
  57
  58                 if (!strstr(argv[1], ".."))
  59                         die(_("no .. in range: '%s'"), argv[1]);
  60                 strbuf_addstr(&range2, argv[1]);
  61         } else if (argc == 3) {
  62                 strbuf_addf(&range1, "%s..%s", argv[0], argv[1]);
  63                 strbuf_addf(&range2, "%s..%s", argv[0], argv[2]);
  64         } else if (argc == 1) {
  65                 const char *b = strstr(argv[0], "..."), *a = argv[0];
  66                 int a_len;
  67
  68                 if (!b) {
  69                         error(_("single arg format must be symmetric range"));
  70                         usage_with_options(builtin_range_diff_usage, options);
  71                 }
  72
  73                 a_len = (int)(b - a);
  74                 if (!a_len) {
  75                         a = "HEAD";
  76                         a_len = strlen(a);
  77                 }
  78                 b += 3;
  79                 if (!*b)
  80                         b = "HEAD";
  81                 strbuf_addf(&range1, "%s..%.*s", b, a_len, a);
  82                 strbuf_addf(&range2, "%.*s..%s", a_len, a, b);
  83         } else {
  84                 error(_("need two commit ranges"));
  85                 usage_with_options(builtin_range_diff_usage, options);
  86         }
  87
  88         res = show_range_diff(range1.buf, range2.buf, creation_factor,
  89                               &diffopt);
  90
  91         strbuf_release(&range1);
  92         strbuf_release(&range2);
  93
  94         return res;
  95 }