verify-tag: factor out signature detection

into tag.h/c for later reuse and modification.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/verify-tag.c b/builtin/verify-tag.c
index 9f482c29f516bde84023f401b28b133c1e605333..86cac6d715dbc29b3586e84ea28f4083ddb2a1b8 100644 (file)
--- a/builtin/verify-tag.c
+++ b/builtin/verify-tag.c
@@ -17,13 +17,11 @@ static const char * const verify_tag_usage[] = {
                NULL
 };
 
-#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
-
 static int run_gpg_verify(const char *buf, unsigned long size, int verbose)
 {
        struct child_process gpg;
        const char *args_gpg[] = {"gpg", "--verify", "FILE", "-", NULL};
-       char path[PATH_MAX], *eol;
+       char path[PATH_MAX];
        size_t len;
        int fd, ret;
 
@@ -37,11 +35,7 @@ static int run_gpg_verify(const char *buf, unsigned long size, int verbose)
        close(fd);
 
        /* find the length without signature */
-       len = 0;
-       while (len < size && prefixcmp(buf + len, PGP_SIGNATURE)) {
-               eol = memchr(buf + len, '\n', size - len);
-               len += eol ? eol - (buf + len) + 1 : size - len;
-       }
+       len = parse_signature(buf, size);
        if (verbose)
                write_in_full(1, buf, len);
 

diff --git a/tag.c b/tag.c
index 28641cf85a0d32357269129f0e8b92bb9e21f399..d4f3080e3f8c3d8026292a2eeccc17152b404254 100644 (file)
--- a/tag.c
+++ b/tag.c
@@ -4,6 +4,8 @@
 #include "tree.h"
 #include "blob.h"
 
+#define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
+
 const char *tag_type = "tag";
 
 struct object *deref_tag(struct object *o, const char *warn, int warnlen)
@@ -133,3 +135,14 @@ int parse_tag(struct tag *item)
        free(data);
        return ret;
 }
+
+size_t parse_signature(const char *buf, unsigned long size)
+{
+       char *eol;
+       size_t len = 0;
+       while (len < size && prefixcmp(buf + len, PGP_SIGNATURE)) {
+               eol = memchr(buf + len, '\n', size - len);
+               len += eol ? eol - (buf + len) + 1 : size - len;
+       }
+       return len;
+}

diff --git a/tag.h b/tag.h
index 47662724a6d7d07eeeacd5c8528d94d750ecf878..85223700396f5ddb00c046a1a9fdb63c92aae40e 100644 (file)
--- a/tag.h
+++ b/tag.h
@@ -16,5 +16,6 @@ extern struct tag *lookup_tag(const unsigned char *sha1);
 extern int parse_tag_buffer(struct tag *item, void *data, unsigned long size);
 extern int parse_tag(struct tag *item);
 extern struct object *deref_tag(struct object *, const char *, int);
+extern size_t parse_signature(const char *buf, unsigned long size);
 
 #endif /* TAG_H */