Make read_patch_file work on a strbuf.

So that we don't need to use strbuf_detach.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-apply.c b/builtin-apply.c
index fec96a8d9d24cafe492a8dbe40bdb470244ea9f5..4113d66b56c956a51b7327358e76dbef7f3647c9 100644 (file)
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -178,12 +178,9 @@ static void say_patch_name(FILE *output, const char *pre, struct patch *patch, c
 #define CHUNKSIZE (8192)
 #define SLOP (16)
 
-static void *read_patch_file(int fd, size_t *sizep)
+static void read_patch_file(struct strbuf *sb, int fd)
 {
-       struct strbuf buf;
-
-       strbuf_init(&buf, 0);
-       if (strbuf_read(&buf, fd, 0) < 0)
+       if (strbuf_read(sb, fd, 0) < 0)
                die("git-apply: read returned %s", strerror(errno));
 
        /*
@@ -191,9 +188,8 @@ static void *read_patch_file(int fd, size_t *sizep)
         * so that we can do speculative "memcmp" etc, and
         * see to it that it is NUL-filled.
         */
-       strbuf_grow(&buf, SLOP);
-       memset(buf.buf + buf.len, 0, SLOP);
-       return strbuf_detach(&buf, sizep);
+       strbuf_grow(sb, SLOP);
+       memset(sb->buf + sb->len, 0, SLOP);
 }
 
 static unsigned long linelen(const char *buffer, unsigned long size)
@@ -2633,22 +2629,22 @@ static void prefix_patches(struct patch *p)
 
 static int apply_patch(int fd, const char *filename, int inaccurate_eof)
 {
-       unsigned long offset, size;
-       char *buffer = read_patch_file(fd, &size);
+       size_t offset;
+       struct strbuf buf;
        struct patch *list = NULL, **listp = &list;
        int skipped_patch = 0;
 
+       strbuf_init(&buf, 0);
        patch_input_file = filename;
-       if (!buffer)
-               return -1;
+       read_patch_file(&buf, fd);
        offset = 0;
-       while (size > 0) {
+       while (offset < buf.len) {
                struct patch *patch;
                int nr;
 
                patch = xcalloc(1, sizeof(*patch));
                patch->inaccurate_eof = inaccurate_eof;
-               nr = parse_chunk(buffer + offset, size, patch);
+               nr = parse_chunk(buf.buf + offset, buf.len, patch);
                if (nr < 0)
                        break;
                if (apply_in_reverse)
@@ -2666,7 +2662,6 @@ static int apply_patch(int fd, const char *filename, int inaccurate_eof)
                        skipped_patch++;
                }
                offset += nr;
-               size -= nr;
        }
 
        if (whitespace_error && (new_whitespace == error_on_whitespace))
@@ -2701,7 +2696,7 @@ static int apply_patch(int fd, const char *filename, int inaccurate_eof)
        if (summary)
                summary_patch_list(list);
 
-       free(buffer);
+       strbuf_release(&buf);
        return 0;
 }