boinc/api/mfile.C

119 lines
2.5 KiB
C

// The contents of this file are subject to the BOINC Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://boinc.berkeley.edu/license_1.0.txt
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
#ifdef _WIN32
#include "stdafx.h"
#endif
#ifndef _WIN32
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <string>
#include <errno.h>
#if HAVE_MALLOC_H
#include <malloc.h>
#endif
using namespace std;
#endif
#include "filesys.h"
#include "error_numbers.h"
#include "boinc_api.h"
int MFILE::open(const char* path, const char* mode) {
buf = 0;
len = 0;
f = boinc_fopen(path, mode);
if (!f) return -1;
return 0;
}
int MFILE::printf(const char* format, ...) {
va_list ap;
char buf2[20000];
int n, k;
va_start(ap, format);
k = vsprintf(buf2, format, ap);
va_end(ap);
n = (int)strlen(buf2);
buf = (char*)realloc(buf, len+n);
if (!buf) {
errno = ERR_MALLOC;
return -1;
}
strncpy(buf+len, buf2, n);
len += n;
return k;
}
size_t MFILE::write(const void *ptr, size_t size, size_t nitems) {
buf = (char *)realloc( buf, len+(size*nitems) );
if (!buf) {
errno = ERR_MALLOC;
return 0;
}
memcpy( buf+len, ptr, size*nitems );
len += (int)size*(int)nitems;
return nitems;
}
int MFILE::_putchar(char c) {
buf = (char*)realloc(buf, len+1);
if (!buf) {
errno = ERR_MALLOC;
return EOF;
}
buf[len] = c;
len++;
return c;
}
int MFILE::puts(const char* p) {
int n = (int)strlen(p);
buf = (char*)realloc(buf, len+n);
if (!buf) {
errno = ERR_MALLOC;
return EOF;
}
strncpy(buf+len, p, n);
len += n;
return n;
}
int MFILE::close() {
fwrite(buf, 1, len, f);
free(buf);
buf = 0;
return fclose(f);
}
int MFILE::flush() {
fwrite(buf, 1, len, f);
len = 0;
return fflush(f);
}
long MFILE::tell() const {
return f ? ftell(f) : -1;
}