actube/src/cw/cw_load_file.c

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/*
This file is part of libcapwap.
libcapwap 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.
libcapwap 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 libcapwap. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include "file.h"
/**
* @file
*/
/**
* Load a file from disk to memory
* @param filename name of file to load
* @param size variable which receives the size of the file in bytes
* @return a pointer to the memory where the file was loaded in \n
* The memory allocated returned in data must be freed using free.
*
* Eexample:
* \code
#include "capwap/file.h"
size_t bytes;
char * data = cw_load_file("file.txt",&bytes);
if (data){
// Do something with data ...
free (data);
}
\endcode
*/
char *cw_load_file(const char *filename, size_t * size)
{
FILE *infile = fopen(filename, "rb");
if (!infile)
return NULL;
fseek(infile, 0, SEEK_END);
*size = ftell(infile);
char *buf = malloc(*size);
if (!buf)
goto errX;
fseek(infile, 0, SEEK_SET);
*size = fread(buf, 1, *size, infile);
errX:
fclose(infile);
return buf;
}