diff options
Diffstat (limited to 'builtin-diff-index.c')
-rw-r--r-- | builtin-diff-index.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/builtin-diff-index.c b/builtin-diff-index.c new file mode 100644 index 0000000000..04837494fe --- /dev/null +++ b/builtin-diff-index.c @@ -0,0 +1,50 @@ +#include "cache.h" +#include "diff.h" +#include "commit.h" +#include "revision.h" +#include "builtin.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); + 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); +} |