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-rw-r--r--diff.c40
1 files changed, 31 insertions, 9 deletions
diff --git a/diff.c b/diff.c
index fbb79d7..e4efb65 100644
--- a/diff.c
+++ b/diff.c
@@ -8,6 +8,7 @@
#include "delta.h"
#include "xdiff-interface.h"
#include "color.h"
+#include "attr.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
@@ -1051,13 +1052,34 @@ static void emit_binary_diff(mmfile_t *one, mmfile_t *two)
emit_binary_diff_body(two, one);
}
+static void setup_diff_attr_check(struct git_attr_check *check)
+{
+ static struct git_attr *attr_diff;
+
+ if (!attr_diff)
+ attr_diff = git_attr("diff", 4);
+ check->attr = attr_diff;
+}
+
#define FIRST_FEW_BYTES 8000
-static int mmfile_is_binary(mmfile_t *mf)
+static int file_is_binary(struct diff_filespec *one)
{
- long sz = mf->size;
+ unsigned long sz;
+ struct git_attr_check attr_diff_check;
+
+ setup_diff_attr_check(&attr_diff_check);
+ if (!git_checkattr(one->path, 1, &attr_diff_check) &&
+ (0 == attr_diff_check.isset))
+ return 1;
+ if (!one->data) {
+ if (!DIFF_FILE_VALID(one))
+ return 0;
+ diff_populate_filespec(one, 0);
+ }
+ sz = one->size;
if (FIRST_FEW_BYTES < sz)
sz = FIRST_FEW_BYTES;
- return !!memchr(mf->ptr, 0, sz);
+ return !!memchr(one->data, 0, sz);
}
static void builtin_diff(const char *name_a,
@@ -1114,7 +1136,7 @@ static void builtin_diff(const char *name_a,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (!o->text && (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2))) {
+ if (!o->text && (file_is_binary(one) || file_is_binary(two))) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
@@ -1190,7 +1212,7 @@ static void builtin_diffstat(const char *name_a, const char *name_b,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2)) {
+ if (file_is_binary(one) || file_is_binary(two)) {
data->is_binary = 1;
data->added = mf2.size;
data->deleted = mf1.size;
@@ -1228,7 +1250,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf2))
+ if (file_is_binary(two))
return;
else {
/* Crazy xdl interfaces.. */
@@ -1805,8 +1827,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o)
if (o->binary) {
mmfile_t mf;
- if ((!fill_mmfile(&mf, one) && mmfile_is_binary(&mf)) ||
- (!fill_mmfile(&mf, two) && mmfile_is_binary(&mf)))
+ if ((!fill_mmfile(&mf, one) && file_is_binary(one)) ||
+ (!fill_mmfile(&mf, two) && file_is_binary(two)))
abbrev = 40;
}
len += snprintf(msg + len, sizeof(msg) - len,
@@ -2701,7 +2723,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
return error("unable to read files to diff");
/* Maybe hash p->two? into the patch id? */
- if (mmfile_is_binary(&mf2))
+ if (file_is_binary(p->two))
continue;
len1 = remove_space(p->one->path, strlen(p->one->path));