Builtin git-diff-files, git-diff-index, git-diff-stages, and git-diff-tree.

[git.git] / builtin-diff-index.c

diff --git a/builtin-diff-index.c b/builtin-diff-index.c
new file mode 100644 (file)
index 0000000..1958580
--- /dev/null
+++ b/builtin-diff-index.c
@@ -0,0 +1,39 @@
+#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, char **envp)
+{
+       struct rev_info rev;
+       int cached = 0;
+       int i;
+
+       git_config(git_diff_config);
+       init_revisions(&rev);
+       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);
+       }
+       /*
+        * Make sure there is one revision (i.e. pending object),
+        * and there is no revision filtering parameters.
+        */
+       if (!rev.pending_objects || rev.pending_objects->next ||
+           rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
+               usage(diff_cache_usage);
+       return run_diff_index(&rev, cached);
+}