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buffers.c
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buffers.c
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/***
This file is part of telnetecho.
Copyright 2012 Daniel Wallace
telnetecho is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
telnetecho is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with telnetecho; If not, see <http://www.gnu.org/licenses/>.
***/
#include "buffers.h"
#include <sys/socket.h>
ssize_t readbuffer(int fd, void *buf, size_t count) {
ssize_t n;
ssize_t rc;
char letter;
char *buffer;
buffer = buf;
for ( n = 1; n < count; n++ ) {
if ( (rc = read(fd, &letter, 1)) == 1 ) {
*buffer++ = letter;
if ( letter == '\n' )
break;
}
}
*buffer = 0;
return n;
}
ssize_t writebuffer(int fdd, const void *buf, size_t remain) {
ssize_t nwritten;
const char *buffer;
buffer = buf;
while ( remain > 0 ) {
nwritten = write(fdd, buffer, remain);
remain -= nwritten;
buffer += nwritten;
}
return 0;
}