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         struct diff_options diffopt = { NULL };
  17         struct strvec other_arg = STRVEC_INIT;
  18         struct range_diff_options range_diff_opts = {
  19                 .creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT,
  20                 .diffopt = &diffopt,
  21                 .other_arg = &other_arg
  22         };
  23         int simple_color = -1;
  24         struct option range_diff_options[] = {
  25                 OPT_INTEGER(0, "creation-factor",
  26                             &range_diff_opts.creation_factor,
  27                             N_("Percentage by which creation is weighted")),
  28                 OPT_BOOL(0, "no-dual-color", &simple_color,
  29                             N_("use simple diff colors")),
  30                 OPT_PASSTHRU_ARGV(0, "notes", &other_arg,
  31                                   N_("notes"), N_("passed to 'git log'"),
  32                                   PARSE_OPT_OPTARG),
  33                 OPT_END()
  34         };
  35         struct option *options;
  36         int res = 0;
  37         struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
  38
  39         git_config(git_diff_ui_config, NULL);
  40
  41         repo_diff_setup(the_repository, &diffopt);
  42
  43         options = parse_options_concat(range_diff_options, diffopt.parseopts);
  44         argc = parse_options(argc, argv, prefix, options,
  45                              builtin_range_diff_usage, 0);
  46
  47         diff_setup_done(&diffopt);
  48
  49         /* force color when --dual-color was used */
  50         if (!simple_color)
  51                 diffopt.use_color = 1;
  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         FREE_AND_NULL(options);
  88
  89         range_diff_opts.dual_color = simple_color < 1;
  90         res = show_range_diff(range1.buf, range2.buf, &range_diff_opts);
  91
  92         strvec_clear(&other_arg);
  93         strbuf_release(&range1);
  94         strbuf_release(&range2);
  95
  96         return res;
  97 }