blob: 8585cfdc2dc7f9c2ccde29a3e4297f12a9037332 [file] [log] [blame]
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2006 Red Hat, Inc.
* Copyright © 2011 Andrea Canciani
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of the
* copyright holders not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Authors: Carl Worth <cworth@cworth.org>
* Andrea Canciani <ranma42@gmail.com>
*/
#include "cairo-missing.h"
#ifndef HAVE_GETLINE
#include "cairo-malloc-private.h"
#define GETLINE_MIN_BUFFER_SIZE 128
ssize_t
getline (char **lineptr,
size_t *n,
FILE *stream)
{
char *line, *tmpline;
size_t len, offset;
ssize_t ret;
offset = 0;
len = *n;
line = *lineptr;
if (len < GETLINE_MIN_BUFFER_SIZE) {
len = GETLINE_MIN_BUFFER_SIZE;
line = NULL;
}
if (line == NULL) {
line = (char *) _cairo_malloc (len);
if (unlikely (line == NULL))
return -1;
}
while (1) {
if (offset + 1 == len) {
tmpline = (char *) _cairo_realloc_ab (line, len, 2);
if (unlikely (tmpline == NULL)) {
if (line != *lineptr)
free (line);
return -1;
}
len *= 2;
line = tmpline;
}
ret = getc (stream);
if (ret == -1)
break;
line[offset++] = ret;
if (ret == '\n') {
ret = offset;
break;
}
}
line[offset++] = '\0';
*lineptr = line;
*n = len;
return ret;
}
#undef GETLINE_BUFFER_SIZE
#endif