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4f38f6b5ba
This fixes "git diff", "git diff-files" and "git diff-index" to work correctly under worktree setup. Because diff* family works in many modes and not all of them require worktree, Junio made a nice summary (with a little modification from me): * diff-files is about comparing with work tree, so it obviously needs a work tree; * diff-index also does, except "diff-index --cached" or "diff --cached TREE" * no-index is about random files outside git context, so it obviously doesn't need any work tree; * comparing two (or more) trees doesn't; * comparing two blobs doesn't; * comparing a blob with a random file doesn't; Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#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_cache_usage[] =
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"git diff-index [-m] [--cached] "
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"[<common diff options>] <tree-ish> [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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int cmd_diff_index(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 cached = 0;
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int i;
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int result;
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init_revisions(&rev, prefix);
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git_config(git_diff_basic_config, NULL); /* 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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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--cached"))
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cached = 1;
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else
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usage(diff_cache_usage);
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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 is one revision (i.e. pending object),
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* and there is no revision filtering parameters.
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*/
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if (rev.pending.nr != 1 ||
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rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
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usage(diff_cache_usage);
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if (!cached)
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setup_work_tree();
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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_index(&rev, cached);
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return diff_result_code(&rev.diffopt, result);
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}
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