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881c019ea6
"git format-patch" learned a new "--range-diff" option to explain the difference between this version and the previous attempt in the cover letter (or after the tree-dashes as a comment). * es/format-patch-rangediff: format-patch: allow --range-diff to apply to a lone-patch format-patch: add --creation-factor tweak for --range-diff format-patch: teach --range-diff to respect -v/--reroll-count format-patch: extend --range-diff to accept revision range format-patch: add --range-diff option to embed diff in cover letter range-diff: relieve callers of low-level configuration burden range-diff: publish default creation factor range-diff: respect diff_option.file rather than assuming 'stdout'
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
#include "cache.h"
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#include "builtin.h"
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#include "parse-options.h"
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#include "range-diff.h"
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#include "config.h"
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static const char * const builtin_range_diff_usage[] = {
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N_("git range-diff [<options>] <old-base>..<old-tip> <new-base>..<new-tip>"),
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N_("git range-diff [<options>] <old-tip>...<new-tip>"),
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N_("git range-diff [<options>] <base> <old-tip> <new-tip>"),
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NULL
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};
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int cmd_range_diff(int argc, const char **argv, const char *prefix)
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{
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int creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT;
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struct diff_options diffopt = { NULL };
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int simple_color = -1;
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struct option options[] = {
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OPT_INTEGER(0, "creation-factor", &creation_factor,
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N_("Percentage by which creation is weighted")),
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OPT_BOOL(0, "no-dual-color", &simple_color,
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N_("use simple diff colors")),
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OPT_END()
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};
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int i, j, res = 0;
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struct strbuf range1 = STRBUF_INIT, range2 = STRBUF_INIT;
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git_config(git_diff_ui_config, NULL);
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diff_setup(&diffopt);
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argc = parse_options(argc, argv, NULL, options,
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builtin_range_diff_usage, PARSE_OPT_KEEP_UNKNOWN |
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PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
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for (i = j = 1; i < argc && strcmp("--", argv[i]); ) {
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int c = diff_opt_parse(&diffopt, argv + i, argc - i, prefix);
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if (!c)
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argv[j++] = argv[i++];
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else
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i += c;
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}
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while (i < argc)
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argv[j++] = argv[i++];
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argc = j;
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diff_setup_done(&diffopt);
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/* Make sure that there are no unparsed options */
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argc = parse_options(argc, argv, NULL,
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options + ARRAY_SIZE(options) - 1, /* OPT_END */
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builtin_range_diff_usage, 0);
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/* force color when --dual-color was used */
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if (!simple_color)
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diffopt.use_color = 1;
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if (argc == 2) {
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if (!strstr(argv[0], ".."))
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die(_("no .. in range: '%s'"), argv[0]);
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strbuf_addstr(&range1, argv[0]);
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if (!strstr(argv[1], ".."))
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die(_("no .. in range: '%s'"), argv[1]);
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strbuf_addstr(&range2, argv[1]);
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} else if (argc == 3) {
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strbuf_addf(&range1, "%s..%s", argv[0], argv[1]);
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strbuf_addf(&range2, "%s..%s", argv[0], argv[2]);
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} else if (argc == 1) {
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const char *b = strstr(argv[0], "..."), *a = argv[0];
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int a_len;
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if (!b) {
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error(_("single arg format must be symmetric range"));
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usage_with_options(builtin_range_diff_usage, options);
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}
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a_len = (int)(b - a);
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if (!a_len) {
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a = "HEAD";
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a_len = strlen(a);
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}
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b += 3;
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if (!*b)
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b = "HEAD";
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strbuf_addf(&range1, "%s..%.*s", b, a_len, a);
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strbuf_addf(&range2, "%.*s..%s", a_len, a, b);
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} else {
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error(_("need two commit ranges"));
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usage_with_options(builtin_range_diff_usage, options);
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}
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res = show_range_diff(range1.buf, range2.buf, creation_factor,
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simple_color < 1, &diffopt);
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strbuf_release(&range1);
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strbuf_release(&range2);
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return res;
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}
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