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-rw-r--r--builtin/rerere.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/builtin/rerere.c b/builtin/rerere.c
new file mode 100644
index 0000000..08213c7
--- /dev/null
+++ b/builtin/rerere.c
@@ -0,0 +1,110 @@
+#include "builtin.h"
+#include "cache.h"
+#include "dir.h"
+#include "parse-options.h"
+#include "string-list.h"
+#include "rerere.h"
+#include "xdiff/xdiff.h"
+#include "xdiff-interface.h"
+
+static const char * const rerere_usage[] = {
+ "git rerere [clear | forget path... | status | remaining | diff | gc]",
+ NULL,
+};
+
+static int outf(void *dummy, mmbuffer_t *ptr, int nbuf)
+{
+ int i;
+ for (i = 0; i < nbuf; i++)
+ if (write_in_full(1, ptr[i].ptr, ptr[i].size) != ptr[i].size)
+ return -1;
+ return 0;
+}
+
+static int diff_two(const char *file1, const char *label1,
+ const char *file2, const char *label2)
+{
+ xpparam_t xpp;
+ xdemitconf_t xecfg;
+ xdemitcb_t ecb;
+ mmfile_t minus, plus;
+
+ if (read_mmfile(&minus, file1) || read_mmfile(&plus, file2))
+ return 1;
+
+ printf("--- a/%s\n+++ b/%s\n", label1, label2);
+ fflush(stdout);
+ memset(&xpp, 0, sizeof(xpp));
+ xpp.flags = 0;
+ memset(&xecfg, 0, sizeof(xecfg));
+ xecfg.ctxlen = 3;
+ ecb.outf = outf;
+ xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
+
+ free(minus.ptr);
+ free(plus.ptr);
+ return 0;
+}
+
+int cmd_rerere(int argc, const char **argv, const char *prefix)
+{
+ struct string_list merge_rr = STRING_LIST_INIT_DUP;
+ int i, fd, autoupdate = -1, flags = 0;
+
+ struct option options[] = {
+ OPT_SET_INT(0, "rerere-autoupdate", &autoupdate,
+ "register clean resolutions in index", 1),
+ OPT_END(),
+ };
+
+ argc = parse_options(argc, argv, prefix, options, rerere_usage, 0);
+
+ if (autoupdate == 1)
+ flags = RERERE_AUTOUPDATE;
+ if (autoupdate == 0)
+ flags = RERERE_NOAUTOUPDATE;
+
+ if (argc < 1)
+ return rerere(flags);
+
+ if (!strcmp(argv[0], "forget")) {
+ const char **pathspec;
+ if (argc < 2)
+ warning("'git rerere forget' without paths is deprecated");
+ pathspec = get_pathspec(prefix, argv + 1);
+ return rerere_forget(pathspec);
+ }
+
+ fd = setup_rerere(&merge_rr, flags);
+ if (fd < 0)
+ return 0;
+
+ if (!strcmp(argv[0], "clear")) {
+ rerere_clear(&merge_rr);
+ } else if (!strcmp(argv[0], "gc"))
+ rerere_gc(&merge_rr);
+ else if (!strcmp(argv[0], "status"))
+ for (i = 0; i < merge_rr.nr; i++)
+ printf("%s\n", merge_rr.items[i].string);
+ else if (!strcmp(argv[0], "remaining")) {
+ rerere_remaining(&merge_rr);
+ for (i = 0; i < merge_rr.nr; i++) {
+ if (merge_rr.items[i].util != RERERE_RESOLVED)
+ printf("%s\n", merge_rr.items[i].string);
+ else
+ /* prepare for later call to
+ * string_list_clear() */
+ merge_rr.items[i].util = NULL;
+ }
+ } else if (!strcmp(argv[0], "diff"))
+ for (i = 0; i < merge_rr.nr; i++) {
+ const char *path = merge_rr.items[i].string;
+ const char *name = (const char *)merge_rr.items[i].util;
+ diff_two(rerere_path(name, "preimage"), path, path, path);
+ }
+ else
+ usage_with_options(rerere_usage, options);
+
+ string_list_clear(&merge_rr, 1);
+ return 0;
+}