#define USE_THE_INDEX_COMPATIBILITY_MACROS #include "cache.h" #include "config.h" #include "diff.h" #include "diff-merges.h" #include "commit.h" #include "revision.h" #include "builtin.h" #include "submodule.h" static const char diff_cache_usage[] = "git diff-index [-m] [--cached] " "[<common-diff-options>] <tree-ish> [<path>...]" COMMON_DIFF_OPTIONS_HELP; int cmd_diff_index(int argc, const char **argv, const char *prefix) { struct rev_info rev; unsigned int option = 0; int i; int result; if (argc == 2 && !strcmp(argv[1], "-h")) usage(diff_cache_usage); git_config(git_diff_basic_config, NULL); /* no "diff" UI options */ repo_init_revisions(the_repository, &rev, prefix); rev.abbrev = 0; prefix = precompose_argv_prefix(argc, argv, prefix); /* * We need (some of) diff for merges options (e.g., --cc), and we need * to avoid conflict with our own meaning of "-m". */ diff_merges_suppress_m_parsing(); argc = setup_revisions(argc, argv, &rev, NULL); for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (!strcmp(arg, "--cached")) option |= DIFF_INDEX_CACHED; else if (!strcmp(arg, "--merge-base")) option |= DIFF_INDEX_MERGE_BASE; else if (!strcmp(arg, "-m")) rev.match_missing = 1; else usage(diff_cache_usage); } if (!rev.diffopt.output_format) rev.diffopt.output_format = DIFF_FORMAT_RAW; rev.diffopt.rotate_to_strict = 1; /* * Make sure there is one revision (i.e. pending object), * and there is no revision filtering parameters. */ if (rev.pending.nr != 1 || rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1) usage(diff_cache_usage); if (!(option & DIFF_INDEX_CACHED)) { setup_work_tree(); if (read_cache_preload(&rev.diffopt.pathspec) < 0) { perror("read_cache_preload"); return -1; } } else if (read_cache() < 0) { perror("read_cache"); return -1; } result = run_diff_index(&rev, option); UNLEAK(rev); return diff_result_code(&rev.diffopt, result); }