mirror of https://github.com/BOINC/boinc.git
163 lines
3.6 KiB
C++
163 lines
3.6 KiB
C++
// This file is part of BOINC.
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// http://boinc.berkeley.edu
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// Copyright (C) 2008 University of California
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//
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// BOINC is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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//
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// BOINC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
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#if defined(_WIN32) && !defined(__STDWX_H__) && !defined(_BOINC_WIN_) && !defined(_AFX_STDAFX_H_)
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#include "boinc_win.h"
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#endif
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#ifndef _WIN32
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#include "config.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstdarg>
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#include <cstring>
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#include <string>
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#include <cerrno>
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#if HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#include <unistd.h>
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#endif
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#include "filesys.h"
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#include "error_numbers.h"
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#include "mfile.h"
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MFILE::MFILE() {
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buf = 0;
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len = 0;
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}
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MFILE::~MFILE() {
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if (buf) free(buf);
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}
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int MFILE::open(const char* path, const char* mode) {
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f = boinc_fopen(path, mode);
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if (!f) return ERR_FOPEN;
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return 0;
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}
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#define BUFSIZE 100000
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int MFILE::vprintf(const char* format, va_list ap) {
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char buf2[BUFSIZE];
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int n, k;
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k = vsnprintf(buf2, BUFSIZE, format, ap);
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if (k<=-1 || k>=BUFSIZE) {
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fprintf(stderr, "ERROR: buffer too small in MFILE::vprintf()\n");
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fprintf(stderr, "ERROR: format: %s\n", format);
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fprintf(stderr, "ERROR: k=%d, BUFSIZE=%d\n", k, BUFSIZE);
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return -1;
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}
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n = (int)strlen(buf2);
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buf = (char*)realloc(buf, len+n+1);
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if (!buf) {
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fprintf(stderr, "ERROR: realloc() failed in MFILE::vprintf()\n");
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exit(1);
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}
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strncpy(buf+len, buf2, n);
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len += n;
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buf[len] = 0;
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return k;
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}
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int MFILE::printf(const char* format, ...) {
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int n;
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va_list ap;
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va_start(ap, format);
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n = MFILE::vprintf(format, ap);
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va_end(ap);
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return n;
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}
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size_t MFILE::write(const void *ptr, size_t size, size_t nitems) {
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buf = (char *)realloc( buf, len+(size*nitems)+1 );
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if (!buf) {
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fprintf(stderr, "ERROR: realloc() failed in MFILE::write()\n");
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exit(1);
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}
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memcpy( buf+len, ptr, size*nitems );
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len += (int)size*(int)nitems;
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buf[len] = 0;
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return nitems;
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}
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int MFILE::_putchar(char c) {
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buf = (char*)realloc(buf, len+1+1);
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if (!buf) {
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fprintf(stderr, "ERROR: realloc() failed in MFILE::_putchar()\n");
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exit(1);
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}
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buf[len] = c;
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len++;
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buf[len] = 0;
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return c;
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}
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int MFILE::puts(const char* p) {
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int n = (int)strlen(p);
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buf = (char*)realloc(buf, len+n+1);
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if (!buf) {
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fprintf(stderr, "ERROR: realloc() failed in MFILE::puts()\n");
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exit(1);
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}
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strncpy(buf+len, p, n);
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len += n;
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buf[len] = 0;
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return n;
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}
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int MFILE::close() {
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int retval = flush();
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fclose(f);
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free(buf);
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buf = 0;
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f = NULL;
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return retval;
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}
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int MFILE::flush() {
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int n, old_len = len;
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n = (int)fwrite(buf, 1, len, f);
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len = 0;
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if (n != old_len) return ERR_FWRITE;
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if (fflush(f)) return ERR_FFLUSH;
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#ifndef _WIN32
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if (fsync(fileno(f)) < 0) return ERR_FSYNC;
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#endif
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return 0;
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}
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long MFILE::tell() const {
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return f ? ftell(f) : -1;
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}
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void MFILE::get_buf(char*& b, int& l) {
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b = buf;
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l = len;
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buf = 0;
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len = 0;
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}
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const char *BOINC_RCSID_8de9facdd7 = "$Id$";
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