1#ifndef PKTLINE_H 2#define PKTLINE_H 3 4#include"git-compat-util.h" 5#include"strbuf.h" 6 7/* 8 * Write a packetized stream, where each line is preceded by 9 * its length (including the header) as a 4-byte hex number. 10 * A length of 'zero' means end of stream (and a length of 1-3 11 * would be an error). 12 * 13 * This is all pretty stupid, but we use this packetized line 14 * format to make a streaming format possible without ever 15 * over-running the read buffers. That way we'll never read 16 * into what might be the pack data (which should go to another 17 * process entirely). 18 * 19 * The writing side could use stdio, but since the reading 20 * side can't, we stay with pure read/write interfaces. 21 */ 22voidpacket_flush(int fd); 23voidpacket_write(int fd,const char*fmt, ...)__attribute__((format(printf,2,3))); 24voidpacket_buf_flush(struct strbuf *buf); 25voidpacket_buf_write(struct strbuf *buf,const char*fmt, ...)__attribute__((format(printf,2,3))); 26 27intpacket_read_line(int fd,char*buffer,unsigned size); 28intpacket_read(int fd,char*buffer,unsigned size); 29intpacket_get_line(struct strbuf *out,char**src_buf,size_t*src_len); 30ssize_t safe_write(int,const void*, ssize_t); 31 32#endif