- cmd = xmalloc(cmd_size);
-
- next_at = 0;
- next_at += snprintf(cmd+next_at, cmd_size-next_at,
- diff_cmd, label_path[0], label_path[1]);
- next_at += snprintf(cmd+next_at, cmd_size-next_at,
- " %s ", diff_opts);
- next_at += snprintf(cmd+next_at, cmd_size-next_at,
- diff_arg, input_name_sq[0], input_name_sq[1]);
-
- printf("diff --git %s %s\n",
- quote_two("a/", name_a), quote_two("b/", name_b));
- if (label_path[0][0] == '/') {
- /* dev/null */
- printf("new file mode %s\n", temp[1].mode);
+ for (i = 0; i < data->nr; i++) {
+ char *name = data->files[i]->name;
+ int added = data->files[i]->added;
+ int deleted = data->files[i]->deleted;
+
+ if (0 < (len = quote_c_style(name, NULL, NULL, 0))) {
+ char *qname = xmalloc(len + 1);
+ quote_c_style(name, qname, NULL, 0);
+ free(name);
+ data->files[i]->name = name = qname;
+ }
+
+ /*
+ * "scale" the filename
+ */
+ len = strlen(name);
+ max = max_len;
+ if (max > 50)
+ max = 50;
+ if (len > max) {
+ char *slash;
+ prefix = "...";
+ max -= 3;
+ name += len - max;
+ slash = strchr(name, '/');
+ if (slash)
+ name = slash;
+ }
+ len = max;
+
+ /*
+ * scale the add/delete
+ */
+ max = max_change;
+ if (max + len > 70)
+ max = 70 - len;
+
+ if (data->files[i]->is_binary) {
+ printf(" %s%-*s | Bin\n", prefix, len, name);
+ goto free_diffstat_file;
+ }
+ else if (data->files[i]->is_unmerged) {
+ printf(" %s%-*s | Unmerged\n", prefix, len, name);
+ goto free_diffstat_file;
+ }
+ else if (added + deleted == 0) {
+ total_files--;
+ goto free_diffstat_file;
+ }
+
+ add = added;
+ del = deleted;
+ total = add + del;
+ adds += add;
+ dels += del;
+
+ if (max_change > 0) {
+ total = (total * max + max_change / 2) / max_change;
+ add = (add * max + max_change / 2) / max_change;
+ del = total - add;
+ }
+ printf(" %s%-*s |%5d %.*s%.*s\n", prefix,
+ len, name, added + deleted,
+ add, pluses, del, minuses);
+ free_diffstat_file:
+ free(data->files[i]->name);
+ free(data->files[i]);
+ }
+ free(data->files);
+ printf(" %d files changed, %d insertions(+), %d deletions(-)\n",
+ total_files, adds, dels);
+}
+
+#define FIRST_FEW_BYTES 8000
+static int mmfile_is_binary(mmfile_t *mf)
+{
+ long sz = mf->size;
+ if (FIRST_FEW_BYTES < sz)
+ sz = FIRST_FEW_BYTES;
+ if (memchr(mf->ptr, 0, sz))
+ return 1;
+ return 0;
+}
+
+static void builtin_diff(const char *name_a,
+ const char *name_b,
+ struct diff_filespec *one,
+ struct diff_filespec *two,
+ const char *xfrm_msg,
+ int complete_rewrite)
+{
+ mmfile_t mf1, mf2;
+ const char *lbl[2];
+ char *a_one, *b_two;
+
+ a_one = quote_two("a/", name_a);
+ b_two = quote_two("b/", name_b);
+ lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null";
+ lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null";
+ printf("diff --git %s %s\n", a_one, b_two);
+ if (lbl[0][0] == '/') {
+ /* /dev/null */
+ printf("new file mode %06o\n", two->mode);