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authorShawn O. Pearce <spearce@spearce.org>2009-10-30 17:47:29 -0700
committerJunio C Hamano <gitster@pobox.com>2009-10-30 19:20:54 -0700
commitef08ef9ea0a271e5be5844408d2496a946d6e8d9 (patch)
tree895858e10e8007ed8dab29f5eea1888c216a4a4f /transport-helper.c
parent292ce46b60e2c12450c5c21044acf9c41bd837df (diff)
downloadgit-ef08ef9ea0a271e5be5844408d2496a946d6e8d9.tar.gz
remote-helpers: Support custom transport options
Some transports, like the native pack transport implemented by fetch-pack, support useful features like depth or include tags. These should be exposed if the underlying helper knows how to use them. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> CC: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'transport-helper.c')
-rw-r--r--transport-helper.c88
1 files changed, 87 insertions, 1 deletions
diff --git a/transport-helper.c b/transport-helper.c
index 9de3408947..577abc638e 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -5,13 +5,15 @@
#include "commit.h"
#include "diff.h"
#include "revision.h"
+#include "quote.h"
struct helper_data
{
const char *name;
struct child_process *helper;
FILE *out;
- unsigned fetch : 1;
+ unsigned fetch : 1,
+ option : 1;
};
static struct child_process *get_helper(struct transport *transport)
@@ -48,6 +50,8 @@ static struct child_process *get_helper(struct transport *transport)
break;
if (!strcmp(buf.buf, "fetch"))
data->fetch = 1;
+ if (!strcmp(buf.buf, "option"))
+ data->option = 1;
}
return data->helper;
}
@@ -65,9 +69,88 @@ static int disconnect_helper(struct transport *transport)
free(data->helper);
data->helper = NULL;
}
+ free(data);
return 0;
}
+static const char *unsupported_options[] = {
+ TRANS_OPT_UPLOADPACK,
+ TRANS_OPT_RECEIVEPACK,
+ TRANS_OPT_THIN,
+ TRANS_OPT_KEEP
+ };
+static const char *boolean_options[] = {
+ TRANS_OPT_THIN,
+ TRANS_OPT_KEEP,
+ TRANS_OPT_FOLLOWTAGS
+ };
+
+static int set_helper_option(struct transport *transport,
+ const char *name, const char *value)
+{
+ struct helper_data *data = transport->data;
+ struct child_process *helper = get_helper(transport);
+ struct strbuf buf = STRBUF_INIT;
+ int i, ret, is_bool = 0;
+
+ if (!data->option)
+ return 1;
+
+ for (i = 0; i < ARRAY_SIZE(unsupported_options); i++) {
+ if (!strcmp(name, unsupported_options[i]))
+ return 1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(boolean_options); i++) {
+ if (!strcmp(name, boolean_options[i])) {
+ is_bool = 1;
+ break;
+ }
+ }
+
+ strbuf_addf(&buf, "option %s ", name);
+ if (is_bool)
+ strbuf_addstr(&buf, value ? "true" : "false");
+ else
+ quote_c_style(value, &buf, NULL, 0);
+ strbuf_addch(&buf, '\n');
+
+ if (write_in_full(helper->in, buf.buf, buf.len) != buf.len)
+ die_errno("cannot send option to %s", data->name);
+
+ strbuf_reset(&buf);
+ if (strbuf_getline(&buf, data->out, '\n') == EOF)
+ exit(128); /* child died, message supplied already */
+
+ if (!strcmp(buf.buf, "ok"))
+ ret = 0;
+ else if (!prefixcmp(buf.buf, "error")) {
+ ret = -1;
+ } else if (!strcmp(buf.buf, "unsupported"))
+ ret = 1;
+ else {
+ warning("%s unexpectedly said: '%s'", data->name, buf.buf);
+ ret = 1;
+ }
+ strbuf_release(&buf);
+ return ret;
+}
+
+static void standard_options(struct transport *t)
+{
+ char buf[16];
+ int n;
+ int v = t->verbose;
+ int no_progress = v < 0 || (!t->progress && !isatty(1));
+
+ set_helper_option(t, "progress", !no_progress ? "true" : "false");
+
+ n = snprintf(buf, sizeof(buf), "%d", v + 1);
+ if (n >= sizeof(buf))
+ die("impossibly large verbosity value");
+ set_helper_option(t, "verbosity", buf);
+}
+
static int fetch_with_fetch(struct transport *transport,
int nr_heads, const struct ref **to_fetch)
{
@@ -75,6 +158,8 @@ static int fetch_with_fetch(struct transport *transport,
int i;
struct strbuf buf = STRBUF_INIT;
+ standard_options(transport);
+
for (i = 0; i < nr_heads; i++) {
const struct ref *posn = to_fetch[i];
if (posn->status & REF_STATUS_UPTODATE)
@@ -178,6 +263,7 @@ int transport_helper_init(struct transport *transport, const char *name)
data->name = name;
transport->data = data;
+ transport->set_option = set_helper_option;
transport->get_refs_list = get_refs_list;
transport->fetch = fetch;
transport->disconnect = disconnect_helper;