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75 lines
1.9 KiB
75 lines
1.9 KiB
#define USE_THE_INDEX_COMPATIBILITY_MACROS |
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#include "cache.h" |
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#include "config.h" |
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#include "diff.h" |
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#include "diff-merges.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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#include "submodule.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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unsigned int option = 0; |
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int i; |
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int result; |
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if (argc == 2 && !strcmp(argv[1], "-h")) |
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usage(diff_cache_usage); |
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git_config(git_diff_basic_config, NULL); /* no "diff" UI options */ |
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repo_init_revisions(the_repository, &rev, prefix); |
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rev.abbrev = 0; |
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prefix = precompose_argv_prefix(argc, argv, prefix); |
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/* |
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* We need (some of) diff for merges options (e.g., --cc), and we need |
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* to avoid conflict with our own meaning of "-m". |
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*/ |
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diff_merges_suppress_m_parsing(); |
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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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option |= DIFF_INDEX_CACHED; |
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else if (!strcmp(arg, "--merge-base")) |
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option |= DIFF_INDEX_MERGE_BASE; |
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else if (!strcmp(arg, "-m")) |
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rev.match_missing = 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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rev.diffopt.rotate_to_strict = 1; |
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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 (!(option & DIFF_INDEX_CACHED)) { |
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setup_work_tree(); |
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if (read_cache_preload(&rev.diffopt.pathspec) < 0) { |
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perror("read_cache_preload"); |
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return -1; |
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} |
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} else 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, option); |
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UNLEAK(rev); |
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return diff_result_code(&rev.diffopt, result); |
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}
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