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Diffstat (limited to 'pkt-line.c')
-rw-r--r--pkt-line.c105
1 files changed, 70 insertions, 35 deletions
diff --git a/pkt-line.c b/pkt-line.c
index 8bc89b1e0c..62fdb37079 100644
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -1,19 +1,60 @@
#include "cache.h"
#include "pkt-line.h"
+#include "run-command.h"
char packet_buffer[LARGE_PACKET_MAX];
static const char *packet_trace_prefix = "git";
static struct trace_key trace_packet = TRACE_KEY_INIT(PACKET);
+static struct trace_key trace_pack = TRACE_KEY_INIT(PACKFILE);
void packet_trace_identity(const char *prog)
{
packet_trace_prefix = xstrdup(prog);
}
+static const char *get_trace_prefix(void)
+{
+ return in_async() ? "sideband" : packet_trace_prefix;
+}
+
+static int packet_trace_pack(const char *buf, unsigned int len, int sideband)
+{
+ if (!sideband) {
+ trace_verbatim(&trace_pack, buf, len);
+ return 1;
+ } else if (len && *buf == '\1') {
+ trace_verbatim(&trace_pack, buf + 1, len - 1);
+ return 1;
+ } else {
+ /* it's another non-pack sideband */
+ return 0;
+ }
+}
+
static void packet_trace(const char *buf, unsigned int len, int write)
{
int i;
struct strbuf out;
+ static int in_pack, sideband;
+
+ if (!trace_want(&trace_packet) && !trace_want(&trace_pack))
+ return;
+
+ if (in_pack) {
+ if (packet_trace_pack(buf, len, sideband))
+ return;
+ } else if (starts_with(buf, "PACK") || starts_with(buf, "\1PACK")) {
+ in_pack = 1;
+ sideband = *buf == '\1';
+ packet_trace_pack(buf, len, sideband);
+
+ /*
+ * Make a note in the human-readable trace that the pack data
+ * started.
+ */
+ buf = "PACK ...";
+ len = strlen(buf);
+ }
if (!trace_want(&trace_packet))
return;
@@ -22,24 +63,17 @@ static void packet_trace(const char *buf, unsigned int len, int write)
strbuf_init(&out, len+32);
strbuf_addf(&out, "packet: %12s%c ",
- packet_trace_prefix, write ? '>' : '<');
+ get_trace_prefix(), write ? '>' : '<');
- if ((len >= 4 && starts_with(buf, "PACK")) ||
- (len >= 5 && starts_with(buf+1, "PACK"))) {
- strbuf_addstr(&out, "PACK ...");
- trace_disable(&trace_packet);
- }
- else {
- /* XXX we should really handle printable utf8 */
- for (i = 0; i < len; i++) {
- /* suppress newlines */
- if (buf[i] == '\n')
- continue;
- if (buf[i] >= 0x20 && buf[i] <= 0x7e)
- strbuf_addch(&out, buf[i]);
- else
- strbuf_addf(&out, "\\%o", buf[i]);
- }
+ /* XXX we should really handle printable utf8 */
+ for (i = 0; i < len; i++) {
+ /* suppress newlines */
+ if (buf[i] == '\n')
+ continue;
+ if (buf[i] >= 0x20 && buf[i] <= 0x7e)
+ strbuf_addch(&out, buf[i]);
+ else
+ strbuf_addf(&out, "\\%o", buf[i]);
}
strbuf_addch(&out, '\n');
@@ -64,44 +98,45 @@ void packet_buf_flush(struct strbuf *buf)
}
#define hex(a) (hexchar[(a) & 15])
-static char buffer[1000];
-static unsigned format_packet(const char *fmt, va_list args)
+static void format_packet(struct strbuf *out, const char *fmt, va_list args)
{
static char hexchar[] = "0123456789abcdef";
- unsigned n;
+ size_t orig_len, n;
- n = vsnprintf(buffer + 4, sizeof(buffer) - 4, fmt, args);
- if (n >= sizeof(buffer)-4)
+ orig_len = out->len;
+ strbuf_addstr(out, "0000");
+ strbuf_vaddf(out, fmt, args);
+ n = out->len - orig_len;
+
+ if (n > LARGE_PACKET_MAX)
die("protocol error: impossibly long line");
- n += 4;
- buffer[0] = hex(n >> 12);
- buffer[1] = hex(n >> 8);
- buffer[2] = hex(n >> 4);
- buffer[3] = hex(n);
- packet_trace(buffer+4, n-4, 1);
- return n;
+
+ out->buf[orig_len + 0] = hex(n >> 12);
+ out->buf[orig_len + 1] = hex(n >> 8);
+ out->buf[orig_len + 2] = hex(n >> 4);
+ out->buf[orig_len + 3] = hex(n);
+ packet_trace(out->buf + orig_len + 4, n - 4, 1);
}
void packet_write(int fd, const char *fmt, ...)
{
+ static struct strbuf buf = STRBUF_INIT;
va_list args;
- unsigned n;
+ strbuf_reset(&buf);
va_start(args, fmt);
- n = format_packet(fmt, args);
+ format_packet(&buf, fmt, args);
va_end(args);
- write_or_die(fd, buffer, n);
+ write_or_die(fd, buf.buf, buf.len);
}
void packet_buf_write(struct strbuf *buf, const char *fmt, ...)
{
va_list args;
- unsigned n;
va_start(args, fmt);
- n = format_packet(fmt, args);
+ format_packet(buf, fmt, args);
va_end(args);
- strbuf_add(buf, buffer, n);
}
static int get_packet_data(int fd, char **src_buf, size_t *src_size,