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/*
* Copyright (c) 2007-2013 Aleksey Cheusov <vle@gmx.net>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
ssize_t
getline(char** lineptr, size_t* n, FILE* stream);
ssize_t
getline(char** lineptr, size_t* n, FILE* stream)
{
int c;
size_t sz = 0;
while (c = getc (stream), c != EOF){
if (sz+1 >= *n){
/* +2 is for `c' and 0-terminator */
*n = *n * 3 / 2 + 2;
*lineptr = (char *) realloc (*lineptr, *n);
if (!*lineptr)
return -1;
}
(*lineptr) [sz++] = (char) c;
if (c == '\n')
break;
}
if (ferror (stream))
return (ssize_t) -1;
if (!sz){
if (feof (stream)){
return (ssize_t) -1;
}else if (!*n){
*lineptr = (char *) malloc (1);
if (!*lineptr)
return -1;
*n = 1;
}
}
(*lineptr) [sz] = 0;
return sz;
}
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