diff options
| -rw-r--r-- | Documentation/diff-options.txt | 5 | ||||
| -rw-r--r-- | builtin-diff-files.c | 4 | ||||
| -rw-r--r-- | builtin-diff-index.c | 4 | ||||
| -rw-r--r-- | builtin-diff-tree.c | 5 | ||||
| -rw-r--r-- | builtin-diff.c | 19 | ||||
| -rw-r--r-- | diff-lib.c | 5 | ||||
| -rw-r--r-- | diff.c | 6 | ||||
| -rw-r--r-- | diff.h | 5 | ||||
| -rwxr-xr-x | t/t4017-diff-retval.sh | 79 |
9 files changed, 118 insertions, 14 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index d8696b7b36..77a3f78dd7 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -159,5 +159,10 @@ -w:: Shorthand for "--ignore-all-space". +--exit-code:: + Make the program exit with codes similar to diff(1). + That is, it exits with 1 if there were differences and + 0 means no differences. + For more detailed explanation on these common options, see also link:diffcore.html[diffcore documentation]. diff --git a/builtin-diff-files.c b/builtin-diff-files.c index aec8338429..6ba5077a2b 100644 --- a/builtin-diff-files.c +++ b/builtin-diff-files.c @@ -17,6 +17,7 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix) { struct rev_info rev; int nongit = 0; + int result; prefix = setup_git_directory_gently(&nongit); init_revisions(&rev, prefix); @@ -29,5 +30,6 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix) argc = setup_revisions(argc, argv, &rev, NULL); if (!rev.diffopt.output_format) rev.diffopt.output_format = DIFF_FORMAT_RAW; - return run_diff_files_cmd(&rev, argc, argv); + result = run_diff_files_cmd(&rev, argc, argv); + return rev.diffopt.exit_with_status ? rev.diffopt.has_changes: result; } diff --git a/builtin-diff-index.c b/builtin-diff-index.c index 083599d5c4..d90eba95a6 100644 --- a/builtin-diff-index.c +++ b/builtin-diff-index.c @@ -14,6 +14,7 @@ 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); git_config(git_default_config); /* no "diff" UI options */ @@ -42,5 +43,6 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix) perror("read_cache"); return -1; } - return run_diff_index(&rev, cached); + result = run_diff_index(&rev, cached); + return rev.diffopt.exit_with_status ? rev.diffopt.has_changes: result; } diff --git a/builtin-diff-tree.c b/builtin-diff-tree.c index 24cb2d7f84..0b591c8716 100644 --- a/builtin-diff-tree.c +++ b/builtin-diff-tree.c @@ -118,7 +118,8 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix) } if (!read_stdin) - return 0; + return opt->diffopt.exit_with_status ? + opt->diffopt.has_changes: 0; if (opt->diffopt.detect_rename) opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE | @@ -133,5 +134,5 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix) else diff_tree_stdin(line); } - return 0; + return opt->diffopt.exit_with_status ? opt->diffopt.has_changes: 0; } diff --git a/builtin-diff.c b/builtin-diff.c index 4efbb8237b..21d13f0b30 100644 --- a/builtin-diff.c +++ b/builtin-diff.c @@ -190,6 +190,7 @@ int cmd_diff(int argc, const char **argv, const char *prefix) const char *path = NULL; struct blobinfo blob[2]; int nongit = 0; + int result = 0; /* * We could get N tree-ish in the rev.pending_objects list. @@ -292,17 +293,17 @@ int cmd_diff(int argc, const char **argv, const char *prefix) if (!ents) { switch (blobs) { case 0: - return run_diff_files_cmd(&rev, argc, argv); + result = run_diff_files_cmd(&rev, argc, argv); break; case 1: if (paths != 1) usage(builtin_diff_usage); - return builtin_diff_b_f(&rev, argc, argv, blob, path); + result = builtin_diff_b_f(&rev, argc, argv, blob, path); break; case 2: if (paths) usage(builtin_diff_usage); - return builtin_diff_blobs(&rev, argc, argv, blob); + result = builtin_diff_blobs(&rev, argc, argv, blob); break; default: usage(builtin_diff_usage); @@ -311,19 +312,21 @@ int cmd_diff(int argc, const char **argv, const char *prefix) else if (blobs) usage(builtin_diff_usage); else if (ents == 1) - return builtin_diff_index(&rev, argc, argv); + result = builtin_diff_index(&rev, argc, argv); else if (ents == 2) - return builtin_diff_tree(&rev, argc, argv, ent); + result = builtin_diff_tree(&rev, argc, argv, ent); else if ((ents == 3) && (ent[0].item->flags & UNINTERESTING)) { /* diff A...B where there is one sane merge base between * A and B. We have ent[0] == merge-base, ent[1] == A, * and ent[2] == B. Show diff between the base and B. */ ent[1] = ent[2]; - return builtin_diff_tree(&rev, argc, argv, ent); + result = builtin_diff_tree(&rev, argc, argv, ent); } else - return builtin_diff_combined(&rev, argc, argv, + result = builtin_diff_combined(&rev, argc, argv, ent, ents); - usage(builtin_diff_usage); + if (rev.diffopt.exit_with_status) + result = rev.diffopt.has_changes; + return result; } diff --git a/diff-lib.c b/diff-lib.c index 6abb981534..f9a1a10cc0 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -170,8 +170,10 @@ static int handle_diff_files_args(struct rev_info *revs, else if (!strcmp(argv[1], "--theirs")) revs->max_count = 3; else if (!strcmp(argv[1], "-n") || - !strcmp(argv[1], "--no-index")) + !strcmp(argv[1], "--no-index")) { revs->max_count = -2; + revs->diffopt.exit_with_status = 1; + } else if (!strcmp(argv[1], "-q")) *silent = 1; else @@ -237,6 +239,7 @@ int setup_diff_no_index(struct rev_info *revs, break; } else if (i < argc - 3 && !strcmp(argv[i], "--no-index")) { i = argc - 3; + revs->diffopt.exit_with_status = 1; break; } if (argc != i + 2 || (!is_outside_repo(argv[i + 1], nongit, prefix) && @@ -2134,6 +2134,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) options->color_diff = options->color_diff_words = 1; else if (!strcmp(arg, "--no-renames")) options->detect_rename = 0; + else if (!strcmp(arg, "--exit-code")) + options->exit_with_status = 1; else return 0; return 1; @@ -2910,6 +2912,8 @@ void diffcore_std(struct diff_options *options) diffcore_order(options->orderfile); diff_resolve_rename_copy(); diffcore_apply_filter(options->filter); + if (options->exit_with_status) + options->has_changes = !!diff_queued_diff.nr; } @@ -2920,6 +2924,8 @@ void diffcore_std_no_resolve(struct diff_options *options) if (options->orderfile) diffcore_order(options->orderfile); diffcore_apply_filter(options->filter); + if (options->exit_with_status) + options->has_changes = !!diff_queued_diff.nr; } void diff_addremove(struct diff_options *options, @@ -56,7 +56,8 @@ struct diff_options { silent_on_remove:1, find_copies_harder:1, color_diff:1, - color_diff_words:1; + color_diff_words:1, + exit_with_status:1; int context; int break_opt; int detect_rename; @@ -71,6 +72,8 @@ struct diff_options { const char *msg_sep; const char *stat_sep; long xdl_opts; + /* 0 - no differences; only meaningful if exit_with_status set */ + int has_changes; int stat_width; int stat_name_width; diff --git a/t/t4017-diff-retval.sh b/t/t4017-diff-retval.sh new file mode 100755 index 0000000000..68731908be --- /dev/null +++ b/t/t4017-diff-retval.sh @@ -0,0 +1,79 @@ +#!/bin/sh + +test_description='Return value of diffs' + +. ./test-lib.sh + +test_expect_success 'setup' ' + echo 1 >a && + git add . && + git commit -m first && + echo 2 >b && + git add . && + git commit -a -m second +' + +test_expect_success 'git diff-tree HEAD^ HEAD' ' + git diff-tree --exit-code HEAD^ HEAD + test $? = 1 +' +test_expect_success 'git diff-tree HEAD^ HEAD -- a' ' + git diff-tree --exit-code HEAD^ HEAD -- a + test $? = 0 +' +test_expect_success 'git diff-tree HEAD^ HEAD -- b' ' + git diff-tree --exit-code HEAD^ HEAD -- b + test $? = 1 +' +test_expect_success 'echo HEAD | git diff-tree --stdin' ' + echo $(git rev-parse HEAD) | git diff-tree --exit-code --stdin + test $? = 1 +' +test_expect_success 'git diff-tree HEAD HEAD' ' + git diff-tree --exit-code HEAD HEAD + test $? = 0 +' +test_expect_success 'git diff-files' ' + git diff-files --exit-code + test $? = 0 +' +test_expect_success 'git diff-index --cached HEAD' ' + git diff-index --exit-code --cached HEAD + test $? = 0 +' +test_expect_success 'git diff-index --cached HEAD^' ' + git diff-index --exit-code --cached HEAD^ + test $? = 1 +' +test_expect_success 'git diff-index --cached HEAD^' ' + echo text >>b && + echo 3 >c && + git add . && { + git diff-index --exit-code --cached HEAD^ + test $? = 1 + } +' +test_expect_success 'git diff-tree -Stext HEAD^ HEAD -- b' ' + git commit -m "text in b" && { + git diff-tree -p --exit-code -Stext HEAD^ HEAD -- b + test $? = 1 + } +' +test_expect_success 'git diff-tree -Snot-found HEAD^ HEAD -- b' ' + git diff-tree -p --exit-code -Snot-found HEAD^ HEAD -- b + test $? = 0 +' +test_expect_success 'git diff-files' ' + echo 3 >>c && { + git diff-files --exit-code + test $? = 1 + } +' +test_expect_success 'git diff-index --cached HEAD' ' + git update-index c && { + git diff-index --exit-code --cached HEAD + test $? = 1 + } +' + +test_done |