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6304c29d51
Being able to say "git diff A B" outside a git repository and getting a colourful version of "diff -u A B" may be nice, but such a cute hack should not give bogus results to scripts that want to give two paths, either or both of which happen to have been removed from the work tree, to "git diff-files". Signed-off-by: Junio C Hamano <gitster@pobox.com>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "diff.h"
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#include "commit.h"
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#include "revision.h"
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#include "builtin.h"
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static const char diff_files_usage[] =
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"git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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int cmd_diff_files(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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int result;
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unsigned options = 0;
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init_revisions(&rev, prefix);
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git_config(git_diff_basic_config); /* no "diff" UI options */
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rev.abbrev = 0;
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argc = setup_revisions(argc, argv, &rev, NULL);
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while (1 < argc && argv[1][0] == '-') {
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if (!strcmp(argv[1], "--base"))
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rev.max_count = 1;
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else if (!strcmp(argv[1], "--ours"))
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rev.max_count = 2;
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else if (!strcmp(argv[1], "--theirs"))
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rev.max_count = 3;
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else if (!strcmp(argv[1], "-q"))
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options |= DIFF_SILENT_ON_REMOVED;
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else
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usage(diff_files_usage);
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argv++; argc--;
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}
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if (!rev.diffopt.output_format)
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rev.diffopt.output_format = DIFF_FORMAT_RAW;
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/*
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* Make sure there are NO revision (i.e. pending object) parameter,
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* rev.max_count is reasonable (0 <= n <= 3), and
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* there is no other revision filtering parameters.
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*/
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if (rev.pending.nr ||
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rev.min_age != -1 || rev.max_age != -1 ||
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3 < rev.max_count)
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usage(diff_files_usage);
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if (rev.max_count == -1 &&
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(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
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rev.combine_merges = rev.dense_combined_merges = 1;
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if (read_cache() < 0) {
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perror("read_cache");
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return -1;
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}
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result = run_diff_files(&rev, options);
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return diff_result_code(&rev.diffopt, result);
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}
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