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authorJunio C Hamano <gitster@pobox.com>2009-04-29 19:49:52 (GMT)
committerJunio C Hamano <gitster@pobox.com>2009-04-29 19:49:52 (GMT)
commit7dae8b21c2fe39a59661c709f0dc17090dafa5a4 (patch)
tree0063896a0043013e3b2ce8d3834586da5120d9d9 /combine-diff.c
parentc922b01f54c4bebe84daeacf014cfbc8dc68479b (diff)
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diff -c -p: do not die on submodules
The combine diff logic knew only about blobs (and their checked-out form in the work tree, either regular files or symlinks), and barfed when fed submodules. This "externalizes" gitlinks in the same way as the normal patch generation codepath does (i.e. "Subproject commit Xxx\n") to fix the issue. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'combine-diff.c')
-rw-r--r--combine-diff.c38
1 files changed, 26 insertions, 12 deletions
diff --git a/combine-diff.c b/combine-diff.c
index aa9d79e..f617e9d 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -6,6 +6,7 @@
#include "quote.h"
#include "xdiff-interface.h"
#include "log-tree.h"
+#include "refs.h"
static struct combine_diff_path *intersect_paths(struct combine_diff_path *curr, int n, int num_parent)
{
@@ -90,18 +91,24 @@ struct sline {
unsigned long *p_lno;
};
-static char *grab_blob(const unsigned char *sha1, unsigned long *size)
+static char *grab_blob(const unsigned char *sha1, unsigned int mode, unsigned long *size)
{
char *blob;
enum object_type type;
- if (is_null_sha1(sha1)) {
+
+ if (S_ISGITLINK(mode)) {
+ blob = xmalloc(100);
+ *size = snprintf(blob, 100,
+ "Subproject commit %s\n", sha1_to_hex(sha1));
+ } else if (is_null_sha1(sha1)) {
/* deleted blob */
*size = 0;
return xcalloc(1, 1);
+ } else {
+ blob = read_sha1_file(sha1, &type, size);
+ if (type != OBJ_BLOB)
+ die("object '%s' is not a blob!", sha1_to_hex(sha1));
}
- blob = read_sha1_file(sha1, &type, size);
- if (type != OBJ_BLOB)
- die("object '%s' is not a blob!", sha1_to_hex(sha1));
return blob;
}
@@ -197,7 +204,8 @@ static void consume_line(void *state_, char *line, unsigned long len)
}
}
-static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
+static void combine_diff(const unsigned char *parent, unsigned int mode,
+ mmfile_t *result_file,
struct sline *sline, unsigned int cnt, int n,
int num_parent)
{
@@ -213,7 +221,7 @@ static void combine_diff(const unsigned char *parent, mmfile_t *result_file,
if (!cnt)
return; /* result deleted */
- parent_file.ptr = grab_blob(parent, &sz);
+ parent_file.ptr = grab_blob(parent, mode, &sz);
parent_file.size = sz;
xpp.flags = XDF_NEED_MINIMAL;
memset(&xecfg, 0, sizeof(xecfg));
@@ -692,7 +700,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
context = opt->context;
/* Read the result of merge first */
if (!working_tree_file)
- result = grab_blob(elem->sha1, &result_size);
+ result = grab_blob(elem->sha1, elem->mode, &result_size);
else {
/* Used by diff-tree to read from the working tree */
struct stat st;
@@ -712,9 +720,13 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
}
result[len] = 0;
elem->mode = canon_mode(st.st_mode);
- }
- else if (0 <= (fd = open(elem->path, O_RDONLY)) &&
- !fstat(fd, &st)) {
+ } else if (S_ISDIR(st.st_mode)) {
+ unsigned char sha1[20];
+ if (resolve_gitlink_ref(elem->path, "HEAD", sha1) < 0)
+ result = grab_blob(elem->sha1, elem->mode, &result_size);
+ else
+ result = grab_blob(sha1, elem->mode, &result_size);
+ } else if (0 <= (fd = open(elem->path, O_RDONLY))) {
size_t len = xsize_t(st.st_size);
ssize_t done;
int is_file, i;
@@ -807,7 +819,9 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
}
}
if (i <= j)
- combine_diff(elem->parent[i].sha1, &result_file, sline,
+ combine_diff(elem->parent[i].sha1,
+ elem->parent[i].mode,
+ &result_file, sline,
cnt, i, num_parent);
if (elem->parent[i].mode != elem->mode)
mode_differs = 1;