http*: move common variables and macros to http.[ch]

Move RANGE_HEADER_SIZE to http.h.

Create no_pragma_header, the curl header list containing the header
"Pragma:" in http.[ch]. It is allocated in http_init, and freed in
http_cleanup. This replaces the no_pragma_header in http-push.c, and
the no_pragma_header member in walker_data in http-walker.c.

Create http_is_verbose. It is to be used by methods in http.c, and is
modified at the entry points of http.c's users, namely http-push.c
(when parsing options) and http-walker.c (in get_http_walker).

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: rctay

http-push.c

@@ -27,7 +27,6 @@ enum XML_Status {
 #endif
 
 #define PREV_BUF_SIZE 4096
-#define RANGE_HEADER_SIZE 30
 
 /* DAV methods */
 #define DAV_LOCK "LOCK"
@@ -76,8 +75,6 @@ static int pushing;
 static int aborted;
 static signed char remote_dir_exists[256];
 
-static struct curl_slist *no_pragma_header;
-
 static int push_verbosely;
 static int push_all = MATCH_REFS_NONE;
 static int force_all;
@@ -2250,6 +2247,7 @@ int main(int argc, char **argv)
 			}
 			if (!strcmp(arg, "--verbose")) {
 				push_verbosely = 1;
+				http_is_verbose = 1;
 				continue;
 			}
 			if (!strcmp(arg, "-d")) {
@@ -2299,8 +2297,6 @@ int main(int argc, char **argv)
 	remote->url[remote->url_nr++] = repo->url;
 	http_init(remote);
 
-	no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
-
 	if (repo->url && repo->url[strlen(repo->url)-1] != '/') {
 		rewritten_url = xmalloc(strlen(repo->url)+2);
 		strcpy(rewritten_url, repo->url);
@@ -2503,8 +2499,6 @@ int main(int argc, char **argv)
 		unlock_remote(info_ref_lock);
 	free(repo);
 
-	curl_slist_free_all(no_pragma_header);
-
 	http_cleanup();
 
 	request = request_queue_head;

http-walker.c

@@ -5,7 +5,6 @@
 #include "http.h"
 
 #define PREV_BUF_SIZE 4096
-#define RANGE_HEADER_SIZE 30
 
 struct alt_base
 {
@@ -57,7 +56,6 @@ struct walker_data {
 	const char *url;
 	int got_alternates;
 	struct alt_base *alt;
-	struct curl_slist *no_pragma_header;
 };
 
 static struct object_request *object_queue_head;
@@ -108,7 +106,6 @@ static void start_object_request(struct walker *walker,
 	char range[RANGE_HEADER_SIZE];
 	struct curl_slist *range_header = NULL;
 	struct active_request_slot *slot;
-	struct walker_data *data = walker->data;
 
 	snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename);
 	unlink_or_warn(prevfile);
@@ -205,7 +202,7 @@ static void start_object_request(struct walker *walker,
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
 	curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr);
 	curl_easy_setopt(slot->curl, CURLOPT_URL, url);
-	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
+	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
 
 	/*
 	 * If we have successfully processed data from a previous fetch
@@ -354,6 +351,8 @@ static void prefetch(struct walker *walker, unsigned char *sha1)
 	newreq->slot = NULL;
 	newreq->next = NULL;
 
+	http_is_verbose = walker->get_verbosely;
+
 	if (object_queue_head == NULL) {
 		object_queue_head = newreq;
 	} else {
@@ -379,7 +378,6 @@ static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned ch
 	long prev_posn = 0;
 	char range[RANGE_HEADER_SIZE];
 	struct curl_slist *range_header = NULL;
-	struct walker_data *data = walker->data;
 
 	FILE *indexfile;
 	struct active_request_slot *slot;
@@ -430,7 +428,7 @@ static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned ch
 	curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
 	curl_easy_setopt(slot->curl, CURLOPT_URL, url);
-	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
+	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
 	slot->local = indexfile;
 
 	/*
@@ -768,7 +766,6 @@ static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned cha
 	long prev_posn = 0;
 	char range[RANGE_HEADER_SIZE];
 	struct curl_slist *range_header = NULL;
-	struct walker_data *data = walker->data;
 
 	struct active_request_slot *slot;
 	struct slot_results results;
@@ -802,7 +799,7 @@ static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned cha
 	curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
 	curl_easy_setopt(slot->curl, CURLOPT_URL, url);
-	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
+	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
 	slot->local = packfile;
 
 	/*
@@ -948,10 +945,7 @@ static int fetch_ref(struct walker *walker, struct ref *ref)
 
 static void cleanup(struct walker *walker)
 {
-	struct walker_data *data = walker->data;
 	http_cleanup();
-
-	curl_slist_free_all(data->no_pragma_header);
 }
 
 struct walker *get_http_walker(const char *url, struct remote *remote)
@@ -962,8 +956,6 @@ struct walker *get_http_walker(const char *url, struct remote *remote)
 
 	http_init(remote);
 
-	data->no_pragma_header = curl_slist_append(NULL, "Pragma:");
-
 	data->alt = xmalloc(sizeof(*data->alt));
 	data->alt->base = xmalloc(strlen(url) + 1);
 	strcpy(data->alt->base, url);

http.c

@@ -2,6 +2,7 @@
 
 int data_received;
 int active_requests;
+int http_is_verbose;
 
 #ifdef USE_CURL_MULTI
 static int max_requests = -1;
@@ -29,6 +30,8 @@ static char *user_name, *user_pass;
 
 static struct curl_slist *pragma_header;
 
+struct curl_slist *no_pragma_header;
+
 static struct active_request_slot *active_queue_head;
 
 size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *buffer_)
@@ -276,6 +279,8 @@ void http_init(struct remote *remote)
 	char *low_speed_limit;
 	char *low_speed_time;
 
+	http_is_verbose = 0;
+
 	git_config(http_options, NULL);
 
 	curl_global_init(CURL_GLOBAL_ALL);
@@ -284,6 +289,7 @@ void http_init(struct remote *remote)
 		curl_http_proxy = xstrdup(remote->http_proxy);
 
 	pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
+	no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
 
 #ifdef USE_CURL_MULTI
 	{
@@ -366,6 +372,9 @@ void http_cleanup(void)
 	curl_slist_free_all(pragma_header);
 	pragma_header = NULL;
 
+	curl_slist_free_all(no_pragma_header);
+	no_pragma_header = NULL;
+
 	if (curl_http_proxy) {
 		free((void *)curl_http_proxy);
 		curl_http_proxy = NULL;

http.h

@@ -88,11 +88,16 @@ extern void add_fill_function(void *data, int (*fill)(void *));
 extern void step_active_slots(void);
 #endif
 
+extern struct curl_slist *no_pragma_header;
+
+#define RANGE_HEADER_SIZE 30
+
 extern void http_init(struct remote *remote);
 extern void http_cleanup(void);
 
 extern int data_received;
 extern int active_requests;
+extern int http_is_verbose;
 
 extern char curl_errorstr[CURL_ERROR_SIZE];