Over time, the http_get_strbuf function has grown several
optional parameters. We now have a bitfield with multiple
boolean options, as well as an optional strbuf for returning
the content-type of the response. And a future patch in this
series is going to add another strbuf option.
Treating these as separate arguments has a few downsides:
1. Most call sites need to add extra NULLs and 0s for the
options they aren't interested in.
2. The http_get_* functions are actually wrappers around
2 layers of low-level implementation functions. We have
to pass these options through individually.
3. The http_get_strbuf wrapper learned these options, but
nobody bothered to do so for http_get_file, even though
it is backed by the same function that does understand
the options.
Let's consolidate the options into a single struct. For the
common case of the default options, we'll allow callers to
simply pass a NULL for the options struct.
The resulting code is often a few lines longer, but it ends
up being easier to read (and to change as we add new
options, since we do not need to update each call site).
Signed-off-by: Jeff King <[email protected]>
---
http-push.c | 4 ++--
http.c | 44 +++++++++++++++++++++++++-------------------
http.h | 15 ++++++++++-----
remote-curl.c | 9 +++++++--
4 files changed, 44 insertions(+), 28 deletions(-)
diff --git a/http-push.c b/http-push.c
index 69200ba..34cb70f 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1542,7 +1542,7 @@ static int remote_exists(const char *path)
sprintf(url, "%s%s", repo->url, path);
- switch (http_get_strbuf(url, NULL, NULL, 0)) {
+ switch (http_get_strbuf(url, NULL, NULL)) {
case HTTP_OK:
ret = 1;
break;
@@ -1566,7 +1566,7 @@ static void fetch_symref(const char *path, char **symref,
unsigned char *sha1)
url = xmalloc(strlen(repo->url) + strlen(path) + 1);
sprintf(url, "%s%s", repo->url, path);
- if (http_get_strbuf(url, NULL, &buffer, 0) != HTTP_OK)
+ if (http_get_strbuf(url, &buffer, NULL) != HTTP_OK)
die("Couldn't get %s for remote symref\n%s", url,
curl_errorstr);
free(url);
diff --git a/http.c b/http.c
index d325669..41ee7aa 100644
--- a/http.c
+++ b/http.c
@@ -853,8 +853,9 @@ static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info,
struct strbuf *buf)
#define HTTP_REQUEST_STRBUF 0
#define HTTP_REQUEST_FILE 1
-static int http_request(const char *url, struct strbuf *type,
- void *result, int target, int options)
+static int http_request(const char *url,
+ void *result, int target,
+ const struct http_get_options *options)
{
struct active_request_slot *slot;
struct slot_results results;
@@ -887,9 +888,9 @@ static int http_request(const char *url, struct strbuf
*type,
}
strbuf_addstr(&buf, "Pragma:");
- if (options & HTTP_NO_CACHE)
+ if (options && options->no_cache)
strbuf_addstr(&buf, " no-cache");
- if (options & HTTP_KEEP_ERROR)
+ if (options && options->keep_error)
curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
headers = curl_slist_append(headers, buf.buf);
@@ -907,8 +908,9 @@ static int http_request(const char *url, struct strbuf
*type,
ret = HTTP_START_FAILED;
}
- if (type)
- curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, type);
+ if (options && options->content_type)
+ curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE,
+ options->content_type);
curl_slist_free_all(headers);
strbuf_release(&buf);
@@ -917,11 +919,10 @@ static int http_request_reauth(const char *url,
}
static int http_request_reauth(const char *url,
- struct strbuf *type,
void *result, int target,
- int options)
+ struct http_get_options *options)
{
- int ret = http_request(url, type, result, target, options);
+ int ret = http_request(url, result, target, options);
if (ret != HTTP_REAUTH)
return ret;
@@ -931,7 +932,7 @@ static int http_request_reauth(const char *url,
* making our next request. We only know how to do this for
* the strbuf case, but that is enough to satisfy current callers.
*/
- if (options & HTTP_KEEP_ERROR) {
+ if (options && options->keep_error) {
switch (target) {
case HTTP_REQUEST_STRBUF:
strbuf_reset(result);
@@ -940,15 +941,14 @@ int http_get_strbuf(const char *url,
die("BUG: HTTP_KEEP_ERROR is only supported with
strbufs");
}
}
- return http_request(url, type, result, target, options);
+ return http_request(url, result, target, options);
}
int http_get_strbuf(const char *url,
- struct strbuf *type,
- struct strbuf *result, int options)
+ struct strbuf *result,
+ struct http_get_options *options)
{
- return http_request_reauth(url, type, result,
- HTTP_REQUEST_STRBUF, options);
+ return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
}
/*
@@ -957,7 +957,8 @@ int http_get_strbuf(const char *url,
* If a previous interrupted download is detected (i.e. a previous temporary
* file is still around) the download is resumed.
*/
-static int http_get_file(const char *url, const char *filename, int options)
+static int http_get_file(const char *url, const char *filename,
+ struct http_get_options *options)
{
int ret;
struct strbuf tmpfile = STRBUF_INIT;
@@ -971,7 +972,7 @@ static int http_get_file(const char *url, const char
*filename, int options)
goto cleanup;
}
- ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE,
options);
+ ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
fclose(result);
if (ret == HTTP_OK && move_temp_to_file(tmpfile.buf, filename))
@@ -983,12 +984,15 @@ int http_fetch_ref(const char *base, struct ref *ref)
int http_fetch_ref(const char *base, struct ref *ref)
{
+ struct http_get_options options = {0};
char *url;
struct strbuf buffer = STRBUF_INIT;
int ret = -1;
+ options.no_cache = 1;
+
url = quote_ref_url(base, ref->name);
- if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
+ if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
strbuf_rtrim(&buffer);
if (buffer.len == 40)
ret = get_sha1_hex(buffer.buf, ref->old_sha1);
@@ -1072,6 +1076,7 @@ int http_get_info_packs(const char *base_url, struct
packed_git **packs_head)
int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
{
+ struct http_get_options options = {0};
int ret = 0, i = 0;
char *url, *data;
struct strbuf buf = STRBUF_INIT;
@@ -1081,7 +1086,8 @@ int http_get_info_packs(const char *base_url, struct
packed_git **packs_head)
strbuf_addstr(&buf, "objects/info/packs");
url = strbuf_detach(&buf, NULL);
- ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE);
+ options.no_cache = 1;
+ ret = http_get_strbuf(url, &buf, &options);
if (ret != HTTP_OK)
goto cleanup;
diff --git a/http.h b/http.h
index d77c1b5..40404b4 100644
--- a/http.h
+++ b/http.h
@@ -125,11 +125,16 @@ extern char *get_remote_object_url(const char *url, const
char *hex,
extern char *get_remote_object_url(const char *url, const char *hex,
int only_two_digit_prefix);
-/* Options for http_request_*() */
-#define HTTP_NO_CACHE 1
-#define HTTP_KEEP_ERROR 2
+/* Options for http_get_*() */
+struct http_get_options {
+ unsigned no_cache:1,
+ keep_error:1;
-/* Return values for http_request_*() */
+ /* If non-NULL, returns the content-type of the response. */
+ struct strbuf *content_type;
+};
+
+/* Return values for http_get_*() */
#define HTTP_OK 0
#define HTTP_MISSING_TARGET 1
#define HTTP_ERROR 2
@@ -142,7 +147,7 @@ extern char *get_remote_object_url(const char *url, const
char *hex,
*
* If the result pointer is NULL, a HTTP HEAD request is made instead of GET.
*/
-int http_get_strbuf(const char *url, struct strbuf *content_type, struct
strbuf *result, int options);
+int http_get_strbuf(const char *url, struct strbuf *result, struct
http_get_options *options);
extern int http_fetch_ref(const char *base, struct ref *ref);
diff --git a/remote-curl.c b/remote-curl.c
index b5ebe01..66705bb 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -206,6 +206,7 @@ static struct discovery* discover_refs(const char *service,
int for_push)
struct discovery *last = last_discovery;
char *refs_url;
int http_ret, maybe_smart = 0;
+ struct http_get_options options;
if (last && !strcmp(service, last->service))
return last;
@@ -223,8 +224,12 @@ static struct discovery* discover_refs(const char
*service, int for_push)
}
refs_url = strbuf_detach(&buffer, NULL);
- http_ret = http_get_strbuf(refs_url, &type, &buffer,
- HTTP_NO_CACHE | HTTP_KEEP_ERROR);
+ memset(&options, 0, sizeof(options));
+ options.content_type = &type;
+ options.no_cache = 1;
+ options.keep_error = 1;
+
+ http_ret = http_get_strbuf(refs_url, &buffer, &options);
switch (http_ret) {
case HTTP_OK:
break;
--
1.8.4.rc3.19.g9da5bf6
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