Make pull() take some implicit data as explicit arguments

Currently it's a bit weird that pull() takes a single argument
describing the commit but takes the write_ref from a global variable.
This makes it take that as a parameter as well, which might be nicer
for the libification in the future, but especially it will make for
nicer code when we implement pull()ing multiple commits at once.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>

fetch.c

@@ -8,9 +8,6 @@
 #include "blob.h"
 #include "refs.h"
 
-const char *write_ref = NULL;
-const char *write_ref_log_details = NULL;
-
 int get_tree = 0;
 int get_history = 0;
 int get_all = 0;
@@ -213,7 +210,8 @@ static int mark_complete(const char *path, const unsigned char *sha1)
 	return 0;
 }
 
-int pull(char *target)
+int pull(char *target, const char *write_ref,
+         const char *write_ref_log_details)
 {
 	struct ref_lock *lock = NULL;
 	unsigned char sha1[20];

fetch.h

@@ -22,12 +22,6 @@ extern void prefetch(unsigned char *sha1);
  */
 extern int fetch_ref(char *ref, unsigned char *sha1);
 
-/* If set, the ref filename to write the target value to. */
-extern const char *write_ref;
-
-/* If set additional text will appear in the ref log. */
-extern const char *write_ref_log_details;
-
 /* Set to fetch the target tree. */
 extern int get_tree;
 
@@ -46,6 +40,9 @@ extern int get_recover;
 /* Report what we got under get_verbosely */
 extern void pull_say(const char *, const char *);
 
-extern int pull(char *target);
+/* If write_ref is set, the ref filename to write the target value to. */
+/* If write_ref_log_details is set, additional text will appear in the ref log. */
+extern int pull(char *target, const char *write_ref,
+		const char *write_ref_log_details);
 
 #endif /* PULL_H */

http-fetch.c

@@ -1216,6 +1216,7 @@ int fetch_ref(char *ref, unsigned char *sha1)
 
 int main(int argc, char **argv)
 {
+	const char *write_ref = NULL;
 	char *commit_id;
 	char *url;
 	char *path;
@@ -1250,7 +1251,6 @@ int main(int argc, char **argv)
 	}
 	commit_id = argv[arg];
 	url = argv[arg + 1];
-	write_ref_log_details = url;
 
 	http_init();
 
@@ -1268,7 +1268,7 @@ int main(int argc, char **argv)
 			alt->path_len = strlen(path);
 	}
 
-	if (pull(commit_id))
+	if (pull(commit_id, write_ref, url))
 		rc = 1;
 
 	http_cleanup();

local-fetch.c

@@ -204,6 +204,7 @@ static const char local_pull_usage[] =
  */
 int main(int argc, char **argv)
 {
+	const char *write_ref = NULL;
 	char *commit_id;
 	int arg = 1;
 
@@ -240,9 +241,8 @@ int main(int argc, char **argv)
 		usage(local_pull_usage);
 	commit_id = argv[arg];
 	path = argv[arg + 1];
-	write_ref_log_details = path;
 
-	if (pull(commit_id))
+	if (pull(commit_id, write_ref, path))
 		return 1;
 
 	return 0;

ssh-fetch.c

@@ -123,6 +123,7 @@ static const char ssh_fetch_usage[] =
   " [-c] [-t] [-a] [-v] [--recover] [-w ref] commit-id url";
 int main(int argc, char **argv)
 {
+	const char *write_ref = NULL;
 	char *commit_id;
 	char *url;
 	int arg = 1;
@@ -159,7 +160,6 @@ int main(int argc, char **argv)
 	}
 	commit_id = argv[arg];
 	url = argv[arg + 1];
-	write_ref_log_details = url;
 
 	if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
 		return 1;
@@ -167,7 +167,7 @@ int main(int argc, char **argv)
 	if (get_version())
 		return 1;
 
-	if (pull(commit_id))
+	if (pull(commit_id, write_ref, url))
 		return 1;
 
 	return 0;