X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=blame.c;h=3ec1c8f1b287654cccb0f2427810d0afead5c44b;hb=67e78c3b8aeb44681b2d4ab2cf97145b7cc9a7a2;hp=7099b53c72dd3d4f586b6ae4ba7583738225523c;hpb=9673198ee867cea4ed70d2cf54c1a2eb8f27bb46;p=git.git

diff --git a/blame.c b/blame.c
index 7099b53c7..3ec1c8f1b 100644
--- a/blame.c
+++ b/blame.c
@@ -17,19 +17,26 @@
 #include "diffcore.h"
 #include "revision.h"
 #include "xdiff-interface.h"
+#include "quote.h"
 
+#ifndef DEBUG
 #define DEBUG 0
+#endif
 
-static const char blame_usage[] = "git-blame [-c] [-l] [-t] [-S <revs-file>] [--] file [commit]\n"
-	"  -c, --compatibility Use the same output mode as git-annotate (Default: off)\n"
-	"  -l, --long          Show long commit SHA1 (Default: off)\n"
-	"  -t, --time          Show raw timestamp (Default: off)\n"
-	"  -S, --revs-file     Use revisions from revs-file instead of calling git-rev-list\n"
-	"  -h, --help          This message";
+static const char blame_usage[] =
+"git-blame [-c] [-l] [-t] [-f] [-n] [-p] [-S <revs-file>] [--] file [commit]\n"
+"  -c, --compatibility Use the same output mode as git-annotate (Default: off)\n"
+"  -l, --long          Show long commit SHA1 (Default: off)\n"
+"  -t, --time          Show raw timestamp (Default: off)\n"
+"  -f, --show-name     Show original filename (Default: auto)\n"
+"  -n, --show-number   Show original linenumber (Default: off)\n"
+"  -p, --porcelain     Show in a format designed for machine consumption\n"
+"  -S revs-file        Use revisions from revs-file instead of calling git-rev-list\n"
+"  -h, --help          This message";
 
 static struct commit **blame_lines;
 static int num_blame_lines;
-static char* blame_contents;
+static char *blame_contents;
 static int blame_len;
 
 struct util_info {
@@ -38,9 +45,10 @@ struct util_info {
 	char *buf;
 	unsigned long size;
 	int num_lines;
-	const char* pathname;
+	const char *pathname;
+	unsigned meta_given:1;
 
-	void* topo_data;
+	void *topo_data;
 };
 
 struct chunk {
@@ -56,9 +64,9 @@ struct patch {
 static void get_blob(struct commit *commit);
 
 /* Only used for statistics */
-static int num_get_patch = 0;
-static int num_commits = 0;
-static int patch_time = 0;
+static int num_get_patch;
+static int num_commits;
+static int patch_time;
 
 struct blame_diff_state {
 	struct xdiff_emit_state xm;
@@ -156,27 +164,21 @@ static int get_blob_sha1_internal(const unsigned char *sha1, const char *base,
 				  unsigned mode, int stage);
 
 static unsigned char blob_sha1[20];
-static const char* blame_file;
+static const char *blame_file;
 static int get_blob_sha1(struct tree *t, const char *pathname,
 			 unsigned char *sha1)
 {
-	int i;
 	const char *pathspec[2];
 	blame_file = pathname;
 	pathspec[0] = pathname;
 	pathspec[1] = NULL;
-	memset(blob_sha1, 0, sizeof(blob_sha1));
+	hashclr(blob_sha1);
 	read_tree_recursive(t, "", 0, 0, pathspec, get_blob_sha1_internal);
 
-	for (i = 0; i < 20; i++) {
-		if (blob_sha1[i] != 0)
-			break;
-	}
-
-	if (i == 20)
+	if (is_null_sha1(blob_sha1))
 		return -1;
 
-	memcpy(sha1, blob_sha1, 20);
+	hashcpy(sha1, blob_sha1);
 	return 0;
 }
 
@@ -191,7 +193,7 @@ static int get_blob_sha1_internal(const unsigned char *sha1, const char *base,
 	    strcmp(blame_file + baselen, pathname))
 		return -1;
 
-	memcpy(blob_sha1, sha1, 20);
+	hashcpy(blob_sha1, sha1);
 	return -1;
 }
 
@@ -232,6 +234,9 @@ static void print_map(struct commit *cmit, struct commit *other)
 	    util2->num_lines ? util->num_lines : util2->num_lines;
 	int num;
 
+	if (print_map == NULL)
+		; /* to avoid "unused function" warning */
+
 	for (i = 0; i < max; i++) {
 		printf("i: %d ", i);
 		num = -1;
@@ -239,7 +244,8 @@ static void print_map(struct commit *cmit, struct commit *other)
 		if (i < util->num_lines) {
 			num = util->line_map[i];
 			printf("%d\t", num);
-		} else
+		}
+		else
 			printf("\t");
 
 		if (i < util2->num_lines) {
@@ -247,7 +253,8 @@ static void print_map(struct commit *cmit, struct commit *other)
 			printf("%d\t", num2);
 			if (num != -1 && num2 != num)
 				printf("---");
-		} else
+		}
+		else
 			printf("\t");
 
 		printf("\n");
@@ -266,12 +273,12 @@ static void fill_line_map(struct commit *commit, struct commit *other,
 	int cur_chunk = 0;
 	int i1, i2;
 
-	if (p->num && DEBUG)
-		print_patch(p);
-
-	if (DEBUG)
+	if (DEBUG) {
+		if (p->num)
+			print_patch(p);
 		printf("num lines 1: %d num lines 2: %d\n", util->num_lines,
 		       util2->num_lines);
+	}
 
 	for (i1 = 0, i2 = 0; i1 < util->num_lines; i1++, i2++) {
 		struct chunk *chunk = NULL;
@@ -293,7 +300,8 @@ static void fill_line_map(struct commit *commit, struct commit *other,
 				i2 += chunk->len2;
 
 			cur_chunk++;
-		} else {
+		}
+		else {
 			if (i2 >= util2->num_lines)
 				break;
 
@@ -327,19 +335,15 @@ static int map_line(struct commit *commit, int line)
 	return info->line_map[line];
 }
 
-static struct util_info* get_util(struct commit *commit)
+static struct util_info *get_util(struct commit *commit)
 {
 	struct util_info *util = commit->util;
 
 	if (util)
 		return util;
 
-	util = xmalloc(sizeof(struct util_info));
-	util->buf = NULL;
-	util->size = 0;
-	util->line_map = NULL;
+	util = xcalloc(1, sizeof(struct util_info));
 	util->num_lines = -1;
-	util->pathname = NULL;
 	commit->util = util;
 	return util;
 }
@@ -351,10 +355,7 @@ static int fill_util_info(struct commit *commit)
 	assert(util);
 	assert(util->pathname);
 
-	if (get_blob_sha1(commit->tree, util->pathname, util->sha1))
-		return 1;
-	else
-		return 0;
+	return !!get_blob_sha1(commit->tree, util->pathname, util->sha1);
 }
 
 static void alloc_line_map(struct commit *commit)
@@ -372,7 +373,7 @@ static void alloc_line_map(struct commit *commit)
 		if (util->buf[i] == '\n')
 			util->num_lines++;
 	}
-	if(util->buf[util->size - 1] != '\n')
+	if (util->buf[util->size - 1] != '\n')
 		util->num_lines++;
 
 	util->line_map = xmalloc(sizeof(int) * util->num_lines);
@@ -381,9 +382,9 @@ static void alloc_line_map(struct commit *commit)
 		util->line_map[i] = -1;
 }
 
-static void init_first_commit(struct commit* commit, const char* filename)
+static void init_first_commit(struct commit *commit, const char *filename)
 {
-	struct util_info* util = commit->util;
+	struct util_info *util = commit->util;
 	int i;
 
 	util->pathname = filename;
@@ -398,18 +399,17 @@ static void init_first_commit(struct commit* commit, const char* filename)
 		util->line_map[i] = i;
 }
 
-
 static void process_commits(struct rev_info *rev, const char *path,
-			    struct commit** initial)
+			    struct commit **initial)
 {
 	int i;
-	struct util_info* util;
+	struct util_info *util;
 	int lines_left;
 	int *blame_p;
 	int *new_lines;
 	int new_lines_len;
 
-	struct commit* commit = get_revision(rev);
+	struct commit *commit = get_revision(rev);
 	assert(commit);
 	init_first_commit(commit, path);
 
@@ -445,7 +445,7 @@ static void process_commits(struct rev_info *rev, const char *path,
 		     parents != NULL; parents = parents->next)
 			num_parents++;
 
-		if(num_parents == 0)
+		if (num_parents == 0)
 			*initial = commit;
 
 		if (fill_util_info(commit))
@@ -506,13 +506,12 @@ static void process_commits(struct rev_info *rev, const char *path,
 	} while ((commit = get_revision(rev)) != NULL);
 }
 
-
-static int compare_tree_path(struct rev_info* revs,
-			     struct commit* c1, struct commit* c2)
+static int compare_tree_path(struct rev_info *revs,
+			     struct commit *c1, struct commit *c2)
 {
 	int ret;
-	const char* paths[2];
-	struct util_info* util = c2->util;
+	const char *paths[2];
+	struct util_info *util = c2->util;
 	paths[0] = util->pathname;
 	paths[1] = NULL;
 
@@ -523,12 +522,11 @@ static int compare_tree_path(struct rev_info* revs,
 	return ret;
 }
 
-
-static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
-				   const char* path)
+static int same_tree_as_empty_path(struct rev_info *revs, struct tree *t1,
+				   const char *path)
 {
 	int ret;
-	const char* paths[2];
+	const char *paths[2];
 	paths[0] = path;
 	paths[1] = NULL;
 
@@ -539,9 +537,9 @@ static int same_tree_as_empty_path(struct rev_info *revs, struct tree* t1,
 	return ret;
 }
 
-static const char* find_rename(struct commit* commit, struct commit* parent)
+static const char *find_rename(struct commit *commit, struct commit *parent)
 {
-	struct util_info* cutil = commit->util;
+	struct util_info *cutil = commit->util;
 	struct diff_options diff_opts;
 	const char *paths[1];
 	int i;
@@ -567,9 +565,11 @@ static const char* find_rename(struct commit* commit, struct commit* parent)
 	for (i = 0; i < diff_queued_diff.nr; i++) {
 		struct diff_filepair *p = diff_queued_diff.queue[i];
 
-		if (p->status == 'R' && !strcmp(p->one->path, cutil->pathname)) {
+		if (p->status == 'R' &&
+		    !strcmp(p->one->path, cutil->pathname)) {
 			if (DEBUG)
-				printf("rename %s -> %s\n", p->one->path, p->two->path);
+				printf("rename %s -> %s\n",
+				       p->one->path, p->two->path);
 			return p->two->path;
 		}
 	}
@@ -585,7 +585,7 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
 		return;
 
 	if (!commit->parents) {
-		struct util_info* util = commit->util;
+		struct util_info *util = commit->util;
 		if (!same_tree_as_empty_path(revs, commit->tree,
 					     util->pathname))
 			commit->object.flags |= TREECHANGE;
@@ -611,17 +611,17 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
 
 		case REV_TREE_NEW:
 		{
-
-			struct util_info* util = commit->util;
+			struct util_info *util = commit->util;
 			if (revs->remove_empty_trees &&
 			    same_tree_as_empty_path(revs, p->tree,
 						    util->pathname)) {
-				const char* new_name = find_rename(commit, p);
+				const char *new_name = find_rename(commit, p);
 				if (new_name) {
-					struct util_info* putil = get_util(p);
+					struct util_info *putil = get_util(p);
 					if (!putil->pathname)
-						putil->pathname = strdup(new_name);
-				} else {
+						putil->pathname = xstrdup(new_name);
+				}
+				else {
 					*pp = parent->next;
 					continue;
 				}
@@ -642,47 +642,106 @@ static void simplify_commit(struct rev_info *revs, struct commit *commit)
 	commit->object.flags |= TREECHANGE;
 }
 
-
 struct commit_info
 {
-	char* author;
-	char* author_mail;
+	char *author;
+	char *author_mail;
 	unsigned long author_time;
-	char* author_tz;
+	char *author_tz;
+
+	/* filled only when asked for details */
+	char *committer;
+	char *committer_mail;
+	unsigned long committer_time;
+	char *committer_tz;
+
+	char *summary;
 };
 
-static void get_commit_info(struct commit* commit, struct commit_info* ret)
+static void get_ac_line(const char *inbuf, const char *what,
+			int bufsz, char *person, char **mail,
+			unsigned long *time, char **tz)
 {
 	int len;
-	char* tmp;
-	static char author_buf[1024];
-
-	tmp = strstr(commit->buffer, "\nauthor ") + 8;
-	len = strchr(tmp, '\n') - tmp;
-	ret->author = author_buf;
-	memcpy(ret->author, tmp, len);
+	char *tmp, *endp;
+
+	tmp = strstr(inbuf, what);
+	if (!tmp)
+		goto error_out;
+	tmp += strlen(what);
+	endp = strchr(tmp, '\n');
+	if (!endp)
+		len = strlen(tmp);
+	else
+		len = endp - tmp;
+	if (bufsz <= len) {
+	error_out:
+		/* Ugh */
+		person = *mail = *tz = "(unknown)";
+		*time = 0;
+		return;
+	}
+	memcpy(person, tmp, len);
 
-	tmp = ret->author;
+	tmp = person;
 	tmp += len;
 	*tmp = 0;
-	while(*tmp != ' ')
+	while (*tmp != ' ')
 		tmp--;
-	ret->author_tz = tmp+1;
+	*tz = tmp+1;
 
 	*tmp = 0;
-	while(*tmp != ' ')
+	while (*tmp != ' ')
 		tmp--;
-	ret->author_time = strtoul(tmp, NULL, 10);
+	*time = strtoul(tmp, NULL, 10);
 
 	*tmp = 0;
-	while(*tmp != ' ')
+	while (*tmp != ' ')
 		tmp--;
-	ret->author_mail = tmp + 1;
-
+	*mail = tmp + 1;
 	*tmp = 0;
 }
 
-static const char* format_time(unsigned long time, const char* tz_str,
+static void get_commit_info(struct commit *commit, struct commit_info *ret, int detailed)
+{
+	int len;
+	char *tmp, *endp;
+	static char author_buf[1024];
+	static char committer_buf[1024];
+	static char summary_buf[1024];
+
+	ret->author = author_buf;
+	get_ac_line(commit->buffer, "\nauthor ",
+		    sizeof(author_buf), author_buf, &ret->author_mail,
+		    &ret->author_time, &ret->author_tz);
+
+	if (!detailed)
+		return;
+
+	ret->committer = committer_buf;
+	get_ac_line(commit->buffer, "\ncommitter ",
+		    sizeof(committer_buf), committer_buf, &ret->committer_mail,
+		    &ret->committer_time, &ret->committer_tz);
+
+	ret->summary = summary_buf;
+	tmp = strstr(commit->buffer, "\n\n");
+	if (!tmp) {
+	error_out:
+		sprintf(summary_buf, "(%s)", sha1_to_hex(commit->object.sha1));
+		return;
+	}
+	tmp += 2;
+	endp = strchr(tmp, '\n');
+	if (!endp)
+		goto error_out;
+	len = endp - tmp;
+	if (len >= sizeof(summary_buf))
+		goto error_out;
+	memcpy(summary_buf, tmp, len);
+	summary_buf[len] = 0;
+}
+
+static const char *format_time(unsigned long time, const char *tz_str,
 			       int show_raw_time)
 {
 	static char time_buf[128];
@@ -707,15 +766,15 @@ static const char* format_time(unsigned long time, const char* tz_str,
 	return time_buf;
 }
 
-static void topo_setter(struct commit* c, void* data)
+static void topo_setter(struct commit *c, void *data)
 {
-	struct util_info* util = c->util;
+	struct util_info *util = c->util;
 	util->topo_data = data;
 }
 
-static void* topo_getter(struct commit* c)
+static void *topo_getter(struct commit *c)
 {
-	struct util_info* util = c->util;
+	struct util_info *util = c->util;
 	return util->topo_data;
 }
 
@@ -738,6 +797,101 @@ static int read_ancestry(const char *graft_file,
 	return 0;
 }
 
+static int lineno_width(int lines)
+{
+	int i, width;
+
+	for (width = 1, i = 10; i <= lines + 1; width++)
+		i *= 10;
+	return width;
+}
+
+static int find_orig_linenum(struct util_info *u, int lineno)
+{
+	int i;
+
+	for (i = 0; i < u->num_lines; i++)
+		if (lineno == u->line_map[i])
+			return i + 1;
+	return 0;
+}
+
+static void emit_meta(struct commit *c, int lno,
+		      int sha1_len, int compatibility, int porcelain,
+		      int show_name, int show_number, int show_raw_time,
+		      int longest_file, int longest_author,
+		      int max_digits, int max_orig_digits)
+{
+	struct util_info *u;
+	int lineno;
+	struct commit_info ci;
+
+	u = c->util;
+	lineno = find_orig_linenum(u, lno);
+
+	if (porcelain) {
+		int group_size = -1;
+		struct commit *cc = (lno == 0) ? NULL : blame_lines[lno-1];
+		if (cc != c) {
+			/* This is the beginning of this group */
+			int i;
+			for (i = lno + 1; i < num_blame_lines; i++)
+				if (blame_lines[i] != c)
+					break;
+			group_size = i - lno;
+		}
+		if (0 < group_size)
+			printf("%s %d %d %d\n", sha1_to_hex(c->object.sha1),
+			       lineno, lno + 1, group_size);
+		else
+			printf("%s %d %d\n", sha1_to_hex(c->object.sha1),
+			       lineno, lno + 1);
+		if (!u->meta_given) {
+			get_commit_info(c, &ci, 1);
+			printf("author %s\n", ci.author);
+			printf("author-mail %s\n", ci.author_mail);
+			printf("author-time %lu\n", ci.author_time);
+			printf("author-tz %s\n", ci.author_tz);
+			printf("committer %s\n", ci.committer);
+			printf("committer-mail %s\n", ci.committer_mail);
+			printf("committer-time %lu\n", ci.committer_time);
+			printf("committer-tz %s\n", ci.committer_tz);
+			printf("filename ");
+			if (quote_c_style(u->pathname, NULL, NULL, 0))
+				quote_c_style(u->pathname, NULL, stdout, 0);
+			else
+				fputs(u->pathname, stdout);
+			printf("\nsummary %s\n", ci.summary);
+
+			u->meta_given = 1;
+		}
+		putchar('\t');
+		return;
+	}
+
+	get_commit_info(c, &ci, 0);
+	fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
+	if (compatibility) {
+		printf("\t(%10s\t%10s\t%d)", ci.author,
+		       format_time(ci.author_time, ci.author_tz,
+				   show_raw_time),
+		       lno + 1);
+	}
+	else {
+		if (show_name)
+			printf(" %-*.*s", longest_file, longest_file,
+			       u->pathname);
+		if (show_number)
+			printf(" %*d", max_orig_digits,
+			       lineno);
+		printf(" (%-*.*s %10s %*d) ",
+		       longest_author, longest_author, ci.author,
+		       format_time(ci.author_time, ci.author_tz,
+				   show_raw_time),
+		       max_digits, lno + 1);
+	}
+}
+
 int main(int argc, const char **argv)
 {
 	int i;
@@ -750,38 +904,43 @@ int main(int argc, const char **argv)
 	int compatibility = 0;
 	int show_raw_time = 0;
 	int options = 1;
-	struct commit* start_commit;
+	struct commit *start_commit;
 
-	const char* args[10];
+	const char *args[10];
 	struct rev_info rev;
 
 	struct commit_info ci;
 	const char *buf;
-	int max_digits;
-	int longest_file, longest_author;
-	int found_rename;
+	int max_digits, max_orig_digits;
+	int longest_file, longest_author, longest_file_lines;
+	int show_name = 0;
+	int show_number = 0;
+	int porcelain = 0;
 
-	const char* prefix = setup_git_directory();
+	const char *prefix = setup_git_directory();
 	git_config(git_default_config);
 
-	for(i = 1; i < argc; i++) {
-		if(options) {
-			if(!strcmp(argv[i], "-h") ||
+	for (i = 1; i < argc; i++) {
+		if (options) {
+			if (!strcmp(argv[i], "-h") ||
 			   !strcmp(argv[i], "--help"))
 				usage(blame_usage);
-			else if(!strcmp(argv[i], "-l") ||
-				!strcmp(argv[i], "--long")) {
+			if (!strcmp(argv[i], "-l") ||
+			    !strcmp(argv[i], "--long")) {
 				sha1_len = 40;
 				continue;
-			} else if(!strcmp(argv[i], "-c") ||
-				  !strcmp(argv[i], "--compatibility")) {
+			}
+			if (!strcmp(argv[i], "-c") ||
+			    !strcmp(argv[i], "--compatibility")) {
 				compatibility = 1;
 				continue;
-			} else if(!strcmp(argv[i], "-t") ||
-				  !strcmp(argv[i], "--time")) {
+			}
+			if (!strcmp(argv[i], "-t") ||
+			    !strcmp(argv[i], "--time")) {
 				show_raw_time = 1;
 				continue;
-			} else if(!strcmp(argv[i], "-S")) {
+			}
+			if (!strcmp(argv[i], "-S")) {
 				if (i + 1 < argc &&
 				    !read_ancestry(argv[i + 1], &sha1_p)) {
 					compatibility = 1;
@@ -789,33 +948,51 @@ int main(int argc, const char **argv)
 					continue;
 				}
 				usage(blame_usage);
-			} else if(!strcmp(argv[i], "--")) {
+			}
+			if (!strcmp(argv[i], "-f") ||
+			    !strcmp(argv[i], "--show-name")) {
+				show_name = 1;
+				continue;
+			}
+			if (!strcmp(argv[i], "-n") ||
+			    !strcmp(argv[i], "--show-number")) {
+				show_number = 1;
+				continue;
+			}
+			if (!strcmp(argv[i], "-p") ||
+			    !strcmp(argv[i], "--porcelain")) {
+				porcelain = 1;
+				sha1_len = 40;
+				show_raw_time = 1;
+				continue;
+			}
+			if (!strcmp(argv[i], "--")) {
 				options = 0;
 				continue;
-			} else if(argv[i][0] == '-')
+			}
+			if (argv[i][0] == '-')
 				usage(blame_usage);
-			else
-				options = 0;
+			options = 0;
 		}
 
-		if(!options) {
-			if(!filename)
+		if (!options) {
+			if (!filename)
 				filename = argv[i];
-			else if(!commit)
+			else if (!commit)
 				commit = argv[i];
 			else
 				usage(blame_usage);
 		}
 	}
 
-	if(!filename)
+	if (!filename)
 		usage(blame_usage);
 	if (commit && sha1_p)
 		usage(blame_usage);
-	else if(!commit)
+	else if (!commit)
 		commit = "HEAD";
 
-	if(prefix)
+	if (prefix)
 		sprintf(filename_buf, "%s%s", prefix, filename);
 	else
 		strcpy(filename_buf, filename);
@@ -833,7 +1010,6 @@ int main(int argc, const char **argv)
 		return 1;
 	}
 
-
 	init_revisions(&rev, setup_git_directory());
 	rev.remove_empty_trees = 1;
 	rev.topo_order = 1;
@@ -851,62 +1027,49 @@ int main(int argc, const char **argv)
 	prepare_revision_walk(&rev);
 	process_commits(&rev, filename, &initial);
 
+	for (i = 0; i < num_blame_lines; i++)
+		if (!blame_lines[i])
+			blame_lines[i] = initial;
+
 	buf = blame_contents;
-	for (max_digits = 1, i = 10; i <= num_blame_lines + 1; max_digits++)
-		i *= 10;
+	max_digits = lineno_width(num_blame_lines);
 
 	longest_file = 0;
 	longest_author = 0;
-	found_rename = 0;
+	longest_file_lines = 0;
 	for (i = 0; i < num_blame_lines; i++) {
 		struct commit *c = blame_lines[i];
-		struct util_info* u;
-		if (!c)
-			c = initial;
+		struct util_info *u;
 		u = c->util;
 
-		if (!found_rename && strcmp(filename, u->pathname))
-			found_rename = 1;
+		if (!show_name && strcmp(filename, u->pathname))
+			show_name = 1;
 		if (longest_file < strlen(u->pathname))
 			longest_file = strlen(u->pathname);
-		get_commit_info(c, &ci);
+		if (longest_file_lines < u->num_lines)
+			longest_file_lines = u->num_lines;
+		get_commit_info(c, &ci, 0);
 		if (longest_author < strlen(ci.author))
 			longest_author = strlen(ci.author);
 	}
 
-	for (i = 0; i < num_blame_lines; i++) {
-		struct commit *c = blame_lines[i];
-		struct util_info* u;
+	max_orig_digits = lineno_width(longest_file_lines);
 
-		if (!c)
-			c = initial;
-
-		u = c->util;
-		get_commit_info(c, &ci);
-		fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
-		if(compatibility) {
-			printf("\t(%10s\t%10s\t%d)", ci.author,
-			       format_time(ci.author_time, ci.author_tz,
-					   show_raw_time),
-			       i+1);
-		} else {
-			if (found_rename)
-				printf(" %-*.*s", longest_file, longest_file,
-				       u->pathname);
-			printf(" (%-*.*s %10s %*d) ",
-			       longest_author, longest_author, ci.author,
-			       format_time(ci.author_time, ci.author_tz,
-					   show_raw_time),
-			       max_digits, i+1);
-		}
+	for (i = 0; i < num_blame_lines; i++) {
+		emit_meta(blame_lines[i], i,
+			  sha1_len, compatibility, porcelain,
+			  show_name, show_number, show_raw_time,
+			  longest_file, longest_author,
+			  max_digits, max_orig_digits);
 
-		if(i == num_blame_lines - 1) {
+		if (i == num_blame_lines - 1) {
 			fwrite(buf, blame_len - (buf - blame_contents),
 			       1, stdout);
-			if(blame_contents[blame_len-1] != '\n')
+			if (blame_contents[blame_len-1] != '\n')
 				putc('\n', stdout);
-		} else {
-			char* next_buf = strchr(buf, '\n') + 1;
+		}
+		else {
+			char *next_buf = strchr(buf, '\n') + 1;
 			fwrite(buf, next_buf - buf, 1, stdout);
 			buf = next_buf;
 		}