X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=combine-diff.c;h=a23894d86927ccf3fcf4a9c720df49ff2364b749;hb=621c53cc082299eaf69e9f2dc0274547c7d87fb0;hp=506c095997f3d5c97a4443ce7860e4af143d6cc7;hpb=2454c962fbe82f23aac4a5d78a0c3b5ffaed83a0;p=git.git

diff --git a/combine-diff.c b/combine-diff.c
index 506c0959..a23894d8 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -8,8 +8,6 @@ static int uninteresting(struct diff_filepair *p)
 {
 	if (diff_unmodified_pair(p))
 		return 1;
-	if (!S_ISREG(p->one->mode) || !S_ISREG(p->two->mode))
-		return 1;
 	return 0;
 }
 
@@ -41,6 +39,7 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
 			p->mode = q->queue[i]->two->mode;
 			memcpy(p->parent[n].sha1, q->queue[i]->one->sha1, 20);
 			p->parent[n].mode = q->queue[i]->one->mode;
+			p->parent[n].status = q->queue[i]->status;
 			*tail = p;
 			tail = &p->next;
 		}
@@ -64,6 +63,7 @@ static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr,
 				memcpy(p->parent[n].sha1,
 				       q->queue[i]->one->sha1, 20);
 				p->parent[n].mode = q->queue[i]->one->mode;
+				p->parent[n].status = q->queue[i]->status;
 				break;
 			}
 		}
@@ -226,6 +226,9 @@ static void combine_diff(const unsigned char *parent, const char *ourtmp,
 	unsigned long nmask = (1UL << n);
 	struct sline *lost_bucket = NULL;
 
+	if (!cnt)
+		return; /* result deleted */
+
 	write_temp_blob(parent_tmp, parent);
 	sprintf(cmd, "diff --unified=0 -La/x -Lb/x '%s' '%s'",
 		parent_tmp, ourtmp);
@@ -542,6 +545,9 @@ static void dump_sline(struct sline *sline, unsigned long cnt, int num_parent)
 	int i;
 	unsigned long lno = 0;
 
+	if (!cnt)
+		return; /* result deleted */
+
 	while (1) {
 		struct sline *sl = &sline[lno];
 		int hunk_end;
@@ -610,10 +616,13 @@ static void reuse_combine_diff(struct sline *sline, unsigned long cnt,
 			sline->flag |= imask;
 		sline++;
 	}
+	/* the overall size of the file (sline[cnt]) */
+	sline->p_lno[i] = sline->p_lno[j];
 }
 
-int show_combined_diff(struct combine_diff_path *elem, int num_parent,
-		       int dense, const char *header)
+static int show_patch_diff(struct combine_diff_path *elem, int num_parent,
+			   int dense, const char *header,
+			   struct diff_options *opt)
 {
 	unsigned long size, cnt, lno;
 	char *result, *cp, *ep;
@@ -622,9 +631,11 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 	int i, show_hunks, shown_header = 0;
 	char ourtmp_buf[TMPPATHLEN];
 	char *ourtmp = ourtmp_buf;
+	int working_tree_file = !memcmp(elem->sha1, null_sha1, 20);
+	int abbrev = opt->full_index ? 40 : DEFAULT_ABBREV;
 
 	/* Read the result of merge first */
-	if (memcmp(elem->sha1, null_sha1, 20)) {
+	if (!working_tree_file) {
 		result = grab_blob(elem->sha1, &size);
 		write_to_temp_file(ourtmp, result, size);
 	}
@@ -638,6 +649,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 			int len = st.st_size;
 			int cnt = 0;
 
+			elem->mode = DIFF_FILE_CANON_MODE(st.st_mode);
 			size = len;
 			result = xmalloc(len + 1);
 			while (cnt < len) {
@@ -653,6 +665,7 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 		else {
 			/* deleted file */
 			size = 0;
+			elem->mode = 0;
 			result = xmalloc(1);
 			result[0] = 0;
 			ourtmp = "/dev/null";
@@ -665,27 +678,26 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 		if (*cp == '\n')
 			cnt++;
 	}
-	if (result[size-1] != '\n')
+	if (size && result[size-1] != '\n')
 		cnt++; /* incomplete line */
 
 	sline = xcalloc(cnt+1, sizeof(*sline));
 	ep = result;
 	sline[0].bol = result;
+	for (lno = 0; lno <= cnt; lno++) {
+		sline[lno].lost_tail = &sline[lno].lost_head;
+		sline[lno].flag = 0;
+	}
 	for (lno = 0, cp = result; cp - result < size; cp++) {
 		if (*cp == '\n') {
-			sline[lno].lost_tail = &sline[lno].lost_head;
 			sline[lno].len = cp - sline[lno].bol;
-			sline[lno].flag = 0;
 			lno++;
 			if (lno < cnt)
 				sline[lno].bol = cp + 1;
 		}
 	}
-	if (result[size-1] != '\n') {
-		sline[cnt-1].lost_tail = &sline[cnt-1].lost_head;
+	if (size && result[size-1] != '\n')
 		sline[cnt-1].len = size - (sline[cnt-1].bol - result);
-		sline[cnt-1].flag = 0;
-	}
 
 	sline[0].p_lno = xcalloc((cnt+1) * num_parent, sizeof(unsigned long));
 	for (lno = 0; lno < cnt; lno++)
@@ -709,15 +721,12 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 
 	show_hunks = make_hunks(sline, cnt, num_parent, dense);
 
-	if (show_hunks || mode_differs) {
+	if (show_hunks || mode_differs || working_tree_file) {
 		const char *abb;
-		char null_abb[DEFAULT_ABBREV + 1];
 
-		memset(null_abb, '0', DEFAULT_ABBREV);
-		null_abb[DEFAULT_ABBREV] = 0;
 		if (header) {
 			shown_header++;
-			puts(header);
+			printf("%s%c", header, opt->line_termination);
 		}
 		printf("diff --%s ", dense ? "cc" : "combined");
 		if (quote_c_style(elem->path, NULL, NULL, 0))
@@ -727,30 +736,34 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 		putchar('\n');
 		printf("index ");
 		for (i = 0; i < num_parent; i++) {
-			if (elem->parent[i].mode != elem->mode)
-				mode_differs = 1;
-			if (memcmp(elem->parent[i].sha1, null_sha1, 20))
-				abb = find_unique_abbrev(elem->parent[i].sha1,
-							 DEFAULT_ABBREV);
-			else
-				abb = null_abb;
+			abb = find_unique_abbrev(elem->parent[i].sha1,
+						 abbrev);
 			printf("%s%s", i ? "," : "", abb);
 		}
-		if (memcmp(elem->sha1, null_sha1, 20))
-			abb = find_unique_abbrev(elem->sha1, DEFAULT_ABBREV);
-		else
-			abb = null_abb;
+		abb = find_unique_abbrev(elem->sha1, abbrev);
 		printf("..%s\n", abb);
 
 		if (mode_differs) {
-			printf("mode ");
-			for (i = 0; i < num_parent; i++) {
-				printf("%s%06o", i ? "," : "",
-				       elem->parent[i].mode);
+			int added = !!elem->mode;
+			for (i = 0; added && i < num_parent; i++)
+				if (elem->parent[i].status !=
+				    DIFF_STATUS_ADDED)
+					added = 0;
+			if (added)
+				printf("new file mode %06o", elem->mode);
+			else {
+				if (!elem->mode)
+					printf("deleted file ");
+				printf("mode ");
+				for (i = 0; i < num_parent; i++) {
+					printf("%s%06o", i ? "," : "",
+					       elem->parent[i].mode);
+				}
+				if (elem->mode)
+					printf("..%06o", elem->mode);
 			}
-			printf("..%06o\n", elem->mode);
+			putchar('\n');
 		}
-		/* if (show_hunks) perhaps */
 		dump_sline(sline, cnt, num_parent);
 	}
 	if (ourtmp == ourtmp_buf)
@@ -772,8 +785,92 @@ int show_combined_diff(struct combine_diff_path *elem, int num_parent,
 	return shown_header;
 }
 
-int diff_tree_combined_merge(const unsigned char *sha1,
-			     const char *header, int dense)
+#define COLONS "::::::::::::::::::::::::::::::::"
+
+static void show_raw_diff(struct combine_diff_path *p, int num_parent, const char *header, struct diff_options *opt)
+{
+	int i, offset, mod_type = 'A';
+	const char *prefix;
+	int line_termination, inter_name_termination;
+
+	line_termination = opt->line_termination;
+	inter_name_termination = '\t';
+	if (!line_termination)
+		inter_name_termination = 0;
+
+	if (header)
+		printf("%s%c", header, line_termination);
+
+	for (i = 0; i < num_parent; i++) {
+		if (p->parent[i].mode)
+			mod_type = 'M';
+	}
+	if (!p->mode)
+		mod_type = 'D';
+
+	if (opt->output_format == DIFF_FORMAT_RAW) {
+		offset = strlen(COLONS) - num_parent;
+		if (offset < 0)
+			offset = 0;
+		prefix = COLONS + offset;
+
+		/* Show the modes */
+		for (i = 0; i < num_parent; i++) {
+			printf("%s%06o", prefix, p->parent[i].mode);
+			prefix = " ";
+		}
+		printf("%s%06o", prefix, p->mode);
+
+		/* Show sha1's */
+		for (i = 0; i < num_parent; i++)
+			printf(" %s", diff_unique_abbrev(p->parent[i].sha1,
+							 opt->abbrev));
+		printf(" %s ", diff_unique_abbrev(p->sha1, opt->abbrev));
+	}
+
+	if (opt->output_format == DIFF_FORMAT_RAW ||
+	    opt->output_format == DIFF_FORMAT_NAME_STATUS) {
+		for (i = 0; i < num_parent; i++)
+			putchar(p->parent[i].status);
+		putchar(inter_name_termination);
+	}
+
+	if (line_termination) {
+		if (quote_c_style(p->path, NULL, NULL, 0))
+			quote_c_style(p->path, NULL, stdout, 0);
+		else
+			printf("%s", p->path);
+		putchar(line_termination);
+	}
+	else {
+		printf("%s%c", p->path, line_termination);
+	}
+}
+
+int show_combined_diff(struct combine_diff_path *p,
+		       int num_parent,
+		       int dense,
+		       const char *header,
+		       struct diff_options *opt)
+{
+	if (!p->len)
+		return 0;
+	switch (opt->output_format) {
+	case DIFF_FORMAT_RAW:
+	case DIFF_FORMAT_NAME_STATUS:
+	case DIFF_FORMAT_NAME:
+		show_raw_diff(p, num_parent, header, opt);
+		return 1;
+
+	default:
+	case DIFF_FORMAT_PATCH:
+		return show_patch_diff(p, num_parent, dense, header, opt);
+	}
+}
+
+const char *diff_tree_combined_merge(const unsigned char *sha1,
+			     const char *header, int dense,
+			     struct diff_options *opt)
 {
 	struct commit *commit = lookup_commit(sha1);
 	struct diff_options diffopts;
@@ -781,7 +878,7 @@ int diff_tree_combined_merge(const unsigned char *sha1,
 	struct combine_diff_path *p, *paths = NULL;
 	int num_parent, i, num_paths;
 
-	diff_setup(&diffopts);
+	diffopts = *opt;
 	diffopts.output_format = DIFF_FORMAT_NO_OUTPUT;
 	diffopts.recursive = 1;
 
@@ -798,6 +895,7 @@ int diff_tree_combined_merge(const unsigned char *sha1,
 		struct commit *parent = parents->item;
 		diff_tree_sha1(parent->object.sha1, commit->object.sha1, "",
 			       &diffopts);
+		diffcore_std(&diffopts);
 		paths = intersect_paths(paths, i, num_parent);
 		diff_flush(&diffopts);
 	}
@@ -809,9 +907,8 @@ int diff_tree_combined_merge(const unsigned char *sha1,
 	}
 	if (num_paths) {
 		for (p = paths; p; p = p->next) {
-			if (!p->len)
-				continue;
-			if (show_combined_diff(p, num_parent, dense, header))
+			if (show_combined_diff(p, num_parent, dense,
+					       header, opt))
 				header = NULL;
 		}
 	}
@@ -822,5 +919,5 @@ int diff_tree_combined_merge(const unsigned char *sha1,
 		paths = paths->next;
 		free(tmp);
 	}
-	return 0;
+	return header;
 }