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 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        diff_setup(&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}