#ifndef lint
static char rcsid[] = "@(#$Id: readfile.cpp,v 1.7 2007-12-13 06:58:22 dockes Exp $ (C) 2004 J.F.Dockes";
#endif
/*
* 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 2 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, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <unistd.h>
#include <fcntl.h>
#ifndef O_STREAMING
#define O_STREAMING 0
#endif
#include <errno.h>
#include <cstring>
#include <string>
#ifndef NO_NAMESPACES
using std::string;
#endif /* NO_NAMESPACES */
#include "readfile.h"
static void caterrno(string *reason)
{
#define ERRBUFSZ 200
char errbuf[ERRBUFSZ];
if (reason) {
#ifdef sun
// Note: sun strerror is noted mt-safe ??
*reason += string("file_to_string: open failed: ") + strerror(errno);
#else
strerror_r(errno, errbuf, ERRBUFSZ);
*reason += string("file_to_string: open failed: ") + errbuf;
#endif
}
}
bool file_to_string(const string &fn, string &data, string *reason)
{
bool ret = false;
int fd = open(fn.c_str(), O_RDONLY|O_STREAMING);
if (fd < 0) {
caterrno(reason);
return false;
}
char buf[4096];
for (;;) {
int n = read(fd, buf, 4096);
if (n < 0) {
caterrno(reason);
goto out;
}
if (n == 0)
break;
try {
data.append(buf, n);
} catch (...) {
caterrno(reason);
goto out;
}
}
ret = true;
out:
if (fd >= 0)
close(fd);
return ret;
}