Add packet_writel() which writes multiple lines in a single call and
then calls packet_flush_gently(). Add packet_read_line_gently() to
enable reading a line without dying on EOF.
Signed-off-by: Ben Peart <benpe...@microsoft.com>
---
pkt-line.c | 31 +++++++++++++++++++++++++++++++
pkt-line.h | 11 +++++++++++
2 files changed, 42 insertions(+)
diff --git a/pkt-line.c b/pkt-line.c
index d4b6bfe076..2788aa1af6 100644
--- a/pkt-line.c
+++ b/pkt-line.c
@@ -171,6 +171,25 @@ int packet_write_fmt_gently(int fd, const char *fmt, ...)
return status;
}
+int packet_writel(int fd, const char *line, ...)
+{
+ va_list args;
+ int err;
+ va_start(args, line);
+ for (;;) {
+ if (!line)
+ break;
+ if (strlen(line) > LARGE_PACKET_DATA_MAX)
+ return -1;
+ err = packet_write_fmt_gently(fd, "%s\n", line);
+ if (err)
+ return err;
+ line = va_arg(args, const char*);
+ }
+ va_end(args);
+ return packet_flush_gently(fd);
+}
+
static int packet_write_gently(const int fd_out, const char *buf, size_t size)
{
static char packet_write_buffer[LARGE_PACKET_MAX];
@@ -323,6 +342,18 @@ char *packet_read_line(int fd, int *len_p)
return packet_read_line_generic(fd, NULL, NULL, len_p);
}
+int packet_read_line_gently(int fd, int *dst_len, char** dst_line)
+{
+ int len = packet_read(fd, NULL, NULL,
+ packet_buffer, sizeof(packet_buffer),
+ PACKET_READ_CHOMP_NEWLINE|PACKET_READ_GENTLE_ON_EOF);
+ if (dst_len)
+ *dst_len = len;
+ if (dst_line)
+ *dst_line = (len > 0) ? packet_buffer : NULL;
+ return len;
+}
+
char *packet_read_line_buf(char **src, size_t *src_len, int *dst_len)
{
return packet_read_line_generic(-1, src, src_len, dst_len);
diff --git a/pkt-line.h b/pkt-line.h
index 18eac64830..cb3eda9695 100644
--- a/pkt-line.h
+++ b/pkt-line.h
@@ -25,6 +25,7 @@ void packet_buf_flush(struct strbuf *buf);
void packet_buf_write(struct strbuf *buf, const char *fmt, ...)
__attribute__((format (printf, 2, 3)));
int packet_flush_gently(int fd);
int packet_write_fmt_gently(int fd, const char *fmt, ...)
__attribute__((format (printf, 2, 3)));
+int packet_writel(int fd, const char *line, ...);
int write_packetized_from_fd(int fd_in, int fd_out);
int write_packetized_from_buf(const char *src_in, size_t len, int fd_out);
@@ -74,6 +75,16 @@ int packet_read(int fd, char **src_buffer, size_t *src_len,
char
char *packet_read_line(int fd, int *size);
/*
+ * Convenience wrapper for packet_read that sets the PACKET_READ_GENTLE_ON_EOF
+ * and CHOMP_NEWLINE options. The return value specifies the number of bytes
+ * read into the buffer or -1 on truncated input. if the *dst_line parameter
+ * is not NULL it will return NULL for a flush packet and otherwise points to
+ * a static buffer (that may be overwritten by subsequent calls). If the size
+ * parameter is not NULL, the length of the packet is written to it.
+ */
+int packet_read_line_gently(int fd, int *size, char** dst_line);
+
+/*
* Same as packet_read_line, but read from a buf rather than a descriptor;
* see packet_read for details on how src_* is used.
*/
--
2.12.1.gvfs.1.18.ge47db72
