[PATCH v6 02/13] pkt-line: extract set_packet_header()
From: <hidden>
Date: 2016-08-25 11:27:19
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Lars Schneider <redacted> set_packet_header() converts an integer to a 4 byte hex string. Make this function locally available so that other pkt-line functions can use it. Signed-off-by: Lars Schneider <redacted> --- pkt-line.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/pkt-line.c b/pkt-line.c
index 0a9b61c..e8adc0f 100644
--- a/pkt-line.c
+++ b/pkt-line.c@@ -97,10 +97,20 @@ void packet_buf_flush(struct strbuf *buf) strbuf_add(buf, "0000", 4); } -#define hex(a) (hexchar[(a) & 15]) -static void format_packet(struct strbuf *out, const char *fmt, va_list args) +static void set_packet_header(char *buf, const int size) { static char hexchar[] = "0123456789abcdef"; + + #define hex(a) (hexchar[(a) & 15]) + buf[0] = hex(size >> 12); + buf[1] = hex(size >> 8); + buf[2] = hex(size >> 4); + buf[3] = hex(size); + #undef hex +} + +static void format_packet(struct strbuf *out, const char *fmt, va_list args) +{ size_t orig_len, n; orig_len = out->len;
@@ -111,10 +121,7 @@ static void format_packet(struct strbuf *out, const char *fmt, va_list args) if (n > LARGE_PACKET_MAX) die("protocol error: impossibly long line"); - 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); + set_packet_header(&out->buf[orig_len], n); packet_trace(out->buf + orig_len + 4, n - 4, 1); }
--
2.9.2