Move buffer_is_binary() to xdiff-interface.h

We already have two instances where we want to determine if a buffer
contains binary data as opposed to text.

[jc: cherry-picked 6bfce93e from 'master']

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diff.c b/diff.c
index af282ddd8818aacdc516ff6f9dff4d84097cbab0..dc6da5e253c4a64440a2da9e2f785f3ea06bea61 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -1107,10 +1107,8 @@ static void setup_diff_attr_check(struct git_attr_check *check)
        check->attr = attr_diff;
 }
 
-#define FIRST_FEW_BYTES 8000
 static int file_is_binary(struct diff_filespec *one)
 {
-       unsigned long sz;
        struct git_attr_check attr_diff_check;
 
        setup_diff_attr_check(&attr_diff_check);
@@ -1127,10 +1125,7 @@ static int file_is_binary(struct diff_filespec *one)
                        return 0;
                diff_populate_filespec(one, 0);
        }
-       sz = one->size;
-       if (FIRST_FEW_BYTES < sz)
-               sz = FIRST_FEW_BYTES;
-       return !!memchr(one->data, 0, sz);
+       return buffer_is_binary(one->data, one->size);
 }
 
 static void builtin_diff(const char *name_a,

diff --git a/grep.c b/grep.c
index fcc676230282e4c5bda4f9f97c5ae65c1a6beb30..f67d6716ea5f42c3384a7a4cb2eb973b02785fba 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "grep.h"
+#include "xdiff-interface.h"
 
 void append_grep_pattern(struct grep_opt *opt, const char *pat,
                         const char *origin, int no, enum grep_pat_token t)
@@ -232,17 +233,6 @@ static void show_line(struct grep_opt *opt, const char *bol, const char *eol,
        printf("%.*s\n", (int)(eol-bol), bol);
 }
 
-/*
- * NEEDSWORK: share code with diff.c
- */
-#define FIRST_FEW_BYTES 8000
-static int buffer_is_binary(const char *ptr, unsigned long size)
-{
-       if (FIRST_FEW_BYTES < size)
-               size = FIRST_FEW_BYTES;
-       return !!memchr(ptr, 0, size);
-}
-
 static int fixmatch(const char *pattern, char *line, regmatch_t *match)
 {
        char *hit = strstr(line, pattern);

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 10816e95a07c23dda7554c102c306d7e9beca606..963bb89b08e64188ba278587f63f380653b019c6 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -122,4 +122,12 @@ int read_mmfile(mmfile_t *ptr, const char *filename)
        return 0;
 }
 
+#define FIRST_FEW_BYTES 8000
+int buffer_is_binary(const char *ptr, unsigned long size)
+{
+       if (FIRST_FEW_BYTES < size)
+               size = FIRST_FEW_BYTES;
+       return !!memchr(ptr, 0, size);
+}
+
 

diff --git a/xdiff-interface.h b/xdiff-interface.h
index 1918808081c00daf20a16a1592c0ed9be6d79be4..536f4e4d9784e0e5ffdc108a5be4bf758d1578ba 100644 (file)
--- a/xdiff-interface.h
+++ b/xdiff-interface.h
@@ -18,5 +18,6 @@ int parse_hunk_header(char *line, int len,
                      int *ob, int *on,
                      int *nb, int *nn);
 int read_mmfile(mmfile_t *ptr, const char *filename);
+int buffer_is_binary(const char *ptr, unsigned long size);
 
 #endif