Andrew's git - gitweb.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
   7static const char * const builtin_range_diff_usage[] = {
   8N_("git range-diff [<options>] <old-base>..<old-tip> <new-base>..<new-tip>"),
   9N_("git range-diff [<options>] <old-tip>...<new-tip>"),
  10N_("git range-diff [<options>] <base> <old-tip> <new-tip>"),
  11NULL
  12};
  13
  14int 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 range_diff_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        struct option *options;
  27        int res = 0;
  28        struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
  29
  30        git_config(git_diff_ui_config, NULL);
  31
  32        repo_diff_setup(the_repository, &diffopt);
  33
  34        options = parse_options_concat(range_diff_options, diffopt.parseopts);
  35        argc = parse_options(argc, argv, prefix, options,
  36                             builtin_range_diff_usage, 0);
  37
  38        diff_setup_done(&diffopt);
  39
  40        /* force color when --dual-color was used */
  41        if (!simple_color)
  42                diffopt.use_color = 1;
  43
  44        if (argc == 2) {
  45                if (!strstr(argv[0], ".."))
  46                        die(_("no .. in range: '%s'"), argv[0]);
  47                strbuf_addstr(&range1, argv[0]);
  48
  49                if (!strstr(argv[1], ".."))
  50                        die(_("no .. in range: '%s'"), argv[1]);
  51                strbuf_addstr(&range2, argv[1]);
  52        } else if (argc == 3) {
  53                strbuf_addf(&range1, "%s..%s", argv[0], argv[1]);
  54                strbuf_addf(&range2, "%s..%s", argv[0], argv[2]);
  55        } else if (argc == 1) {
  56                const char *b = strstr(argv[0], "..."), *a = argv[0];
  57                int a_len;
  58
  59                if (!b) {
  60                        error(_("single arg format must be symmetric range"));
  61                        usage_with_options(builtin_range_diff_usage, options);
  62                }
  63
  64                a_len = (int)(b - a);
  65                if (!a_len) {
  66                        a = "HEAD";
  67                        a_len = strlen(a);
  68                }
  69                b += 3;
  70                if (!*b)
  71                        b = "HEAD";
  72                strbuf_addf(&range1, "%s..%.*s", b, a_len, a);
  73                strbuf_addf(&range2, "%.*s..%s", a_len, a, b);
  74        } else {
  75                error(_("need two commit ranges"));
  76                usage_with_options(builtin_range_diff_usage, options);
  77        }
  78        FREE_AND_NULL(options);
  79
  80        res = show_range_diff(range1.buf, range2.buf, creation_factor,
  81                              simple_color < 1, &diffopt);
  82
  83        strbuf_release(&range1);
  84        strbuf_release(&range2);
  85
  86        return res;
  87}