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, left_only = 0, right_only = 0;
  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_BOOL(0, "left-only", &left_only,
  34                          N_("only emit output related to the first range")),
  35                 OPT_BOOL(0, "right-only", &right_only,
  36                          N_("only emit output related to the second range")),
  37                 OPT_END()
  38         };
  39         struct option *options;
  40         int res = 0;
  41         struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
  42
  43         git_config(git_diff_ui_config, NULL);
  44
  45         repo_diff_setup(the_repository, &diffopt);
  46
  47         options = parse_options_concat(range_diff_options, diffopt.parseopts);
  48         argc = parse_options(argc, argv, prefix, options,
  49                              builtin_range_diff_usage, 0);
  50
  51         diff_setup_done(&diffopt);
  52
  53         /* force color when --dual-color was used */
  54         if (!simple_color)
  55                 diffopt.use_color = 1;
  56
  57         if (argc == 2) {
  58                 if (!strstr(argv[0], ".."))
  59                         die(_("no .. in range: '%s'"), argv[0]);
  60                 strbuf_addstr(&range1, argv[0]);
  61
  62                 if (!strstr(argv[1], ".."))
  63                         die(_("no .. in range: '%s'"), argv[1]);
  64                 strbuf_addstr(&range2, argv[1]);
  65         } else if (argc == 3) {
  66                 strbuf_addf(&range1, "%s..%s", argv[0], argv[1]);
  67                 strbuf_addf(&range2, "%s..%s", argv[0], argv[2]);
  68         } else if (argc == 1) {
  69                 const char *b = strstr(argv[0], "..."), *a = argv[0];
  70                 int a_len;
  71
  72                 if (!b) {
  73                         error(_("single arg format must be symmetric range"));
  74                         usage_with_options(builtin_range_diff_usage, options);
  75                 }
  76
  77                 a_len = (int)(b - a);
  78                 if (!a_len) {
  79                         a = "HEAD";
  80                         a_len = strlen(a);
  81                 }
  82                 b += 3;
  83                 if (!*b)
  84                         b = "HEAD";
  85                 strbuf_addf(&range1, "%s..%.*s", b, a_len, a);
  86                 strbuf_addf(&range2, "%.*s..%s", a_len, a, b);
  87         } else {
  88                 error(_("need two commit ranges"));
  89                 usage_with_options(builtin_range_diff_usage, options);
  90         }
  91         FREE_AND_NULL(options);
  92
  93         range_diff_opts.dual_color = simple_color < 1;
  94         range_diff_opts.left_only = left_only;
  95         range_diff_opts.right_only = right_only;
  96         res = show_range_diff(range1.buf, range2.buf, &range_diff_opts);
  97
  98         strvec_clear(&other_arg);
  99         strbuf_release(&range1);
 100         strbuf_release(&range2);
 101
 102         return res;
 103 }