[PATCH 1/2] blame: Nicer output

From: Fredrik Kuivinen <hidden>
Date: 2016-06-15 22:42:21

As pointed out by Junio, it may be dangerous to cut off people's names
after 15 bytes. If the name is encoded in an encoding which uses more
than one byte per code point we may end up with outputting garbage.
Instead of trying to do something smart, just output the entire name.
We don't gain much screen space by chopping it off anyway.

Furthermore, only output the file name if we actually found any
renames.

Signed-off-by: Fredrik Kuivinen <redacted>

---

 blame.c |   35 ++++++++++++++++++++++++++++++-----
 1 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/blame.c b/blame.c
index 1fb5070..8af4b54 100644
--- a/blame.c
+++ b/blame.c

@@ -742,6 +742,8 @@ int main(int argc, const char **argv)
 	struct commit_info ci;
 	const char *buf;
 	int max_digits;
+	size_t longest_file, longest_author;
+	int found_rename;
 
 	const char* prefix = setup_git_directory();

@@ -818,6 +820,25 @@ int main(int argc, const char **argv)
 	for (max_digits = 1, i = 10; i <= num_blame_lines + 1; max_digits++)
 		i *= 10;
 
+	longest_file = 0;
+	longest_author = 0;
+	found_rename = 0;
+	for (i = 0; i < num_blame_lines; i++) {
+		struct commit *c = blame_lines[i];
+		struct util_info* u;
+		if (!c)
+			c = initial;
+		u = c->object.util;
+
+		if (!found_rename && strcmp(filename, u->pathname))
+			found_rename = 1;
+		if (longest_file < strlen(u->pathname))
+			longest_file = strlen(u->pathname);
+		get_commit_info(c, &ci);
+		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;

@@ -828,14 +849,18 @@ int main(int argc, const char **argv)
 		u = c->object.util;
 		get_commit_info(c, &ci);
 		fwrite(sha1_to_hex(c->object.sha1), sha1_len, 1, stdout);
-		if(compability)
+		if(compability) {
 			printf("\t(%10s\t%10s\t%d)", ci.author,
 			       format_time(ci.author_time, ci.author_tz), i+1);
-		else
-			printf(" %s (%-15.15s %10s %*d) ", u->pathname,
-			       ci.author, format_time(ci.author_time,
-						      ci.author_tz),
+		} 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),
 			       max_digits, i+1);
+		}
 
 		if(i == num_blame_lines - 1) {
 			fwrite(buf, blame_len - (buf - blame_contents),

[PATCH 2/2] blame: Fix git-blame <directory>

From: Fredrik Kuivinen <hidden>
Date: 2016-06-15 22:42:21

Before this patch git-blame <directory> gave non-sensible output. (It
assigned blame to some random file in <directory>) Abort with an error
message instead.

Signed-off-by: Fredrik Kuivinen <redacted>

---

 blame.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/blame.c b/blame.c
index 8af4b54..9c97aec 100644
--- a/blame.c
+++ b/blame.c

@@ -180,11 +180,13 @@ static int get_blob_sha1_internal(unsign
 				  unsigned mode, int stage);
 
 static unsigned char blob_sha1[20];
+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));

@@ -209,6 +211,10 @@ static int get_blob_sha1_internal(unsign
 	if (S_ISDIR(mode))
 		return READ_TREE_RECURSIVE;
 
+	if (strncmp(blame_file, base, baselen) ||
+	    strcmp(blame_file + baselen, pathname))
+		return -1;
+
 	memcpy(blob_sha1, sha1, 20);
 	return -1;
 }

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