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/*
Numdiff - compare putatively similar files,
ignoring small numeric differences
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Ivano Primi <ivprimi@libero.it>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
char* read_line (FILE* pf, int* errcode)
{
char buffer[BUFF_SIZE];
char *ptr, *line = NULL;
size_t lline = 0;
while ((ptr = fgets (buffer, BUFF_SIZE,pf)))
{
lline += strlen (buffer);
if (!line)
ptr = (char*) calloc (lline + 1, sizeof(char));
else
ptr = (char*) realloc ((void*)line, (lline + 1) * sizeof(char));
if (!ptr)
{
if ((line))
free ((void*)line);
*errcode = OUT_OF_MEMORY;
return NULL;
}
else
{
line = ptr;
strcat (line, buffer);
}
if (lline > 0 && line[lline-1] == '\n')
break;
}
if (!ptr)
{
if ( (ferror(pf)) )
*errcode = READING_ERROR;
else if (lline > 0)
*errcode = LINE_INTERR;
else
*errcode = EOF_REACHED;
}
else
*errcode = OK;
return line;
}
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