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authorJunio C Hamano <junkio@cox.net>2005-05-19 10:32:35 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-19 15:59:40 (GMT)
commit5c97558c9a813a0a775c438a79cfc438def00c22 (patch)
tree59b9eaa38cd2ec6f846ed2f2b6767055022a227a /diff-tree.c
parenta310d4349467d78266f38d29e500c77b96ee5bef (diff)
downloadgit-5c97558c9a813a0a775c438a79cfc438def00c22.zip
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[PATCH] Detect renames in diff family.
This rips out the rename detection engine from diff-helper and moves it to the diff core, and updates the internal calling convention used by diff-tree family into the diff core. In order to give the same option name to diff-tree family as well as to diff-helper, I've changed the earlier diff-helper '-r' option to '-M' (stands for Move; sorry but the natural abbreviation 'r' for 'rename' is already taken for 'recursive'). Although I did a fair amount of test with the git-diff-tree with existing rename commits in the core GIT repository, this should still be considered beta (preview) release. This patch depends on the diff-delta infrastructure just committed. This implements almost everything I wanted to see in this series of patch, except a few minor cleanups in the calling convention into diff core, but that will be a separate cleanup patch. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'diff-tree.c')
-rw-r--r--diff-tree.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/diff-tree.c b/diff-tree.c
index 59d12f2..34c868d 100644
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -9,6 +9,7 @@ static int recursive = 0;
static int read_stdin = 0;
static int line_termination = '\n';
static int generate_patch = 0;
+static int detect_rename = 0;
static const char *header = NULL;
static const char *header_prefix = "";
@@ -281,6 +282,18 @@ static int diff_tree_sha1(const unsigned char *old, const unsigned char *new, co
return retval;
}
+static int diff_tree_sha1_top(const unsigned char *old,
+ const unsigned char *new, const char *base)
+{
+ int ret;
+ if (generate_patch)
+ diff_setup(detect_rename, 0, 0, 0, 0);
+ ret = diff_tree_sha1(old, new, base);
+ if (generate_patch)
+ diff_flush();
+ return ret;
+}
+
static int get_one_line(const char *msg, unsigned long len)
{
int ret = 0;
@@ -377,7 +390,7 @@ static int diff_tree_commit(const unsigned char *commit, const char *name)
if (get_sha1_hex(buf + offset + 7, parent))
return -1;
header = generate_header(name, sha1_to_hex(parent), buf, size);
- diff_tree_sha1(parent, commit, "");
+ diff_tree_sha1_top(parent, commit, "");
if (!header && verbose_header)
header_prefix = "\ndiff-tree ";
offset += 48;
@@ -401,14 +414,14 @@ static int diff_tree_stdin(char *line)
line[81] = 0;
sprintf(this_header, "%s (from %s)\n", line, line+41);
header = this_header;
- return diff_tree_sha1(parent, commit, "");
+ return diff_tree_sha1_top(parent, commit, "");
}
line[40] = 0;
return diff_tree_commit(commit, line);
}
static char *diff_tree_usage =
-"diff-tree [-p] [-r] [-z] [--stdin] [-m] [-s] [-v] <tree sha1> <tree sha1>";
+"diff-tree [-p] [-r] [-z] [--stdin] [-M] [-m] [-s] [-v] <tree-ish> <tree-ish>";
int main(int argc, char **argv)
{
@@ -447,6 +460,10 @@ int main(int argc, char **argv)
recursive = generate_patch = 1;
continue;
}
+ if (!strcmp(arg, "-M")) {
+ detect_rename = recursive = generate_patch = 1;
+ continue;
+ }
if (!strcmp(arg, "-z")) {
line_termination = '\0';
continue;
@@ -490,7 +507,7 @@ int main(int argc, char **argv)
diff_tree_commit(sha1[0], NULL);
break;
case 2:
- diff_tree_sha1(sha1[0], sha1[1], "");
+ diff_tree_sha1_top(sha1[0], sha1[1], "");
break;
}