#include "cache.h" #include "diff.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; int cached = 0; int i; int result; init_revisions(&rev, prefix); gitmodules_config(); git_config(git_diff_basic_config, NULL); /* no "diff" UI options */ rev.abbrev = 0; argc = setup_revisions(argc, argv, &rev, NULL); for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (!strcmp(arg, "--cached")) cached = 1; else usage(diff_cache_usage); } if (!rev.diffopt.output_format) rev.diffopt.output_format = DIFF_FORMAT_RAW; /* * 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 (!cached) setup_work_tree(); if (read_cache() < 0) { perror("read_cache"); return -1; } result = run_diff_index(&rev, cached); return diff_result_code(&rev.diffopt, result); }