git-svn: trailing slash in prefix is mandatory with --branches/-b

[git.git] / xdiff-interface.c

diff --git a/xdiff-interface.c b/xdiff-interface.c
index 08602f522183dc43787616f37cba9b8af4e3dade..e407cf11b1d8ba28be64eda7bcb505d9edb4d253 100644 (file)
--- a/xdiff-interface.c
+++ b/xdiff-interface.c
@@ -102,3 +102,30 @@ int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
        }
        return 0;
 }
+
+int read_mmfile(mmfile_t *ptr, const char *filename)
+{
+       struct stat st;
+       FILE *f;
+       size_t sz;
+
+       if (stat(filename, &st))
+               return error("Could not stat %s", filename);
+       if ((f = fopen(filename, "rb")) == NULL)
+               return error("Could not open %s", filename);
+       sz = xsize_t(st.st_size);
+       ptr->ptr = xmalloc(sz);
+       if (fread(ptr->ptr, sz, 1, f) != 1)
+               return error("Could not read %s", filename);
+       fclose(f);
+       ptr->size = sz;
+       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);
+}