| 1 | #define USE_THE_REPOSITORY_VARIABLE |
| 2 | #define DISABLE_SIGN_COMPARE_WARNINGS |
| 3 | |
| 4 | #include "builtin.h" |
| 5 | #include "config.h" |
| 6 | #include "diff.h" |
| 7 | #include "diff-merges.h" |
| 8 | #include "commit.h" |
| 9 | #include "preload-index.h" |
| 10 | #include "revision.h" |
| 11 | #include "setup.h" |
| 12 | |
| 13 | static const char diff_cache_usage[] = |
| 14 | "git diff-index [-m] [--cached] [--merge-base] " |
| 15 | "[<common-diff-options>] <tree-ish> [<path>...]" |
| 16 | "\n" |
| 17 | COMMON_DIFF_OPTIONS_HELP; |
| 18 | |
| 19 | int cmd_diff_index(int argc, |
| 20 | const char **argv, |
| 21 | const char *prefix, |
| 22 | struct repository *repo UNUSED) |
| 23 | { |
| 24 | struct rev_info rev; |
| 25 | unsigned int option = 0; |
| 26 | int i; |
| 27 | int result; |
| 28 | |
| 29 | show_usage_if_asked(argc, argv, diff_cache_usage); |
| 30 | |
| 31 | repo_config(the_repository, git_diff_basic_config, NULL); /* no "diff" UI options */ |
| 32 | |
| 33 | prepare_repo_settings(the_repository); |
| 34 | the_repository->settings.command_requires_full_index = 0; |
| 35 | |
| 36 | repo_init_revisions(the_repository, &rev, prefix); |
| 37 | rev.abbrev = 0; |
| 38 | prefix = precompose_argv_prefix(argc, argv, prefix); |
| 39 | |
| 40 | /* |
| 41 | * We need (some of) diff for merges options (e.g., --cc), and we need |
| 42 | * to avoid conflict with our own meaning of "-m". |
| 43 | */ |
| 44 | diff_merges_suppress_m_parsing(); |
| 45 | |
| 46 | argc = setup_revisions(argc, argv, &rev, NULL); |
| 47 | for (i = 1; i < argc; i++) { |
| 48 | const char *arg = argv[i]; |
| 49 | |
| 50 | if (!strcmp(arg, "--cached")) |
| 51 | option |= DIFF_INDEX_CACHED; |
| 52 | else if (!strcmp(arg, "--merge-base")) |
| 53 | option |= DIFF_INDEX_MERGE_BASE; |
| 54 | else if (!strcmp(arg, "-m")) |
| 55 | rev.match_missing = 1; |
| 56 | else |
| 57 | usage(diff_cache_usage); |
| 58 | } |
| 59 | if (!rev.diffopt.output_format) |
| 60 | rev.diffopt.output_format = DIFF_FORMAT_RAW; |
| 61 | |
| 62 | rev.diffopt.rotate_to_strict = 1; |
| 63 | |
| 64 | /* |
| 65 | * Make sure there is one revision (i.e. pending object), |
| 66 | * and there is no revision filtering parameters. |
| 67 | */ |
| 68 | if (rev.pending.nr != 1 || |
| 69 | rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1) |
| 70 | usage(diff_cache_usage); |
| 71 | if (!(option & DIFF_INDEX_CACHED)) { |
| 72 | setup_work_tree(the_repository); |
| 73 | if (repo_read_index_preload(the_repository, &rev.diffopt.pathspec, 0) < 0) { |
| 74 | perror("repo_read_index_preload"); |
| 75 | return -1; |
| 76 | } |
| 77 | } else if (repo_read_index(the_repository) < 0) { |
| 78 | perror("repo_read_index"); |
| 79 | return -1; |
| 80 | } |
| 81 | run_diff_index(&rev, option); |
| 82 | result = diff_result_code(&rev); |
| 83 | release_revisions(&rev); |
| 84 | return result; |
| 85 | } |