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readfile.cpp    68 lines (60 with data), 1.6 kB

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#ifndef lint
static char rcsid[] = "@(#$Id: readfile.cpp,v 1.3 2006-01-23 13:32:28 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 <string>
#ifndef NO_NAMESPACES
using std::string;
#endif /* NO_NAMESPACES */
#include "readfile.h"
bool file_to_string(const string &fn, string &data)
{
bool ret = false;
int fd = open(fn.c_str(), O_RDONLY|O_STREAMING);
if (fd < 0) {
// perror("open");
return false;
}
char buf[4096];
for (;;) {
int n = read(fd, buf, 4096);
if (n < 0) {
// perror("read");
goto out;
}
if (n == 0)
break;
try {
data.append(buf, n);
} catch (...) {
// fprintf(stderr, "file_to_string: out of memory\n");
goto out;
}
}
ret = true;
out:
if (fd >= 0)
close(fd);
return ret;
}