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pkt-line: add packet_write_gently() 

packet_write_fmt_gently() uses format_packet() which lets the caller
only send string data via "%s". That means it cannot be used for
arbitrary data that may contain NULs.

Add packet_write_gently() which writes arbitrary data and does not die
in case of an error. The function is used by other pkt-line functions in
a subsequent patch.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Lars Schneider 2016-10-16 16:20:33 -07:00 committed by Junio C Hamano
parent 038ce90f2f
commit edfb780cd4
1 changed files with 17 additions and 0 deletions
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17
pkt-line.c
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@ -171,6 +171,23 @@ int packet_write_fmt_gently(int fd, const char *fmt, ...)
return status;
}
static int packet_write_gently(const int fd_out, const char *buf, size_t size)
{
static char packet_write_buffer[LARGE_PACKET_MAX];
size_t packet_size;
if (size > sizeof(packet_write_buffer) - 4)
return error("packet write failed - data exceeds max packet size");
packet_trace(buf, size, 1);
packet_size = size + 4;
set_packet_header(packet_write_buffer, packet_size);
memcpy(packet_write_buffer + 4, buf, size);
if (write_in_full(fd_out, packet_write_buffer, packet_size) == packet_size)
return 0;
return error("packet write failed");
}
void packet_buf_write(struct strbuf *buf, const char *fmt, ...)
{
va_list args;