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b0799b6e46
IOFile provides the same interface of old BufferedFile. It provides extension points as pure virtual functions. Those functions are implemented by 2 concrete subclasses: BufferedFile and GZipFile.
151 lines
3.3 KiB
C++
151 lines
3.3 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2011 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#include "IOFile.h"
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#include <cstring>
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#include <cstdarg>
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#include <ostream>
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#include "a2io.h"
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#include "util.h"
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namespace aria2 {
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const char IOFile::READ[] = "rb";
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const char IOFile::WRITE[] = "wb";
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const char IOFile::APPEND[] = "ab";
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IOFile::operator unspecified_bool_type() const
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{
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bool ok = isOpen() && !isError();
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return ok ? &IOFile::goodState : 0;
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}
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size_t IOFile::read(void* ptr, size_t count)
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{
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return onRead(ptr, count);
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}
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size_t IOFile::write(const void* ptr, size_t count)
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{
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return onWrite(ptr, count);
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}
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size_t IOFile::write(const char* str)
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{
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return write(str, strlen(str));
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}
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char* IOFile::gets(char* s, int size)
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{
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return onGets(s, size);
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}
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char* IOFile::getsn(char* s, int size)
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{
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char* ptr = gets(s, size);
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if(ptr) {
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int len = strlen(ptr);
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if(ptr[len-1] == '\n') {
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ptr[len-1] = '\0';
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}
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}
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return ptr;
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}
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std::string IOFile::getLine()
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{
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std::string res;
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if(eof()) {
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return res;
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}
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char buf[4096];
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while(gets(buf, sizeof(buf))) {
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size_t len = strlen(buf);
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bool lineBreak = false;
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if(buf[len-1] == '\n') {
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--len;
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lineBreak = true;
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}
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res.append(buf, len);
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if(lineBreak) {
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break;
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}
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}
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return res;
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}
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int IOFile::close()
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{
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return onClose();
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}
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bool IOFile::eof()
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{
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return !isOpen() || isEOF();
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}
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size_t IOFile::transfer(std::ostream& out)
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{
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size_t count = 0;
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char buf[4096];
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while(1) {
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size_t r = this->read(buf, sizeof(buf));
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out.write(buf, r);
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count += r;
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if(r < sizeof(buf)) {
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break;
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}
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}
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return count;
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}
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int IOFile::vprintf(const char* format, va_list va)
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{
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return onVprintf(format, va);
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}
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int IOFile::flush()
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{
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return onFlush();
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}
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bool IOFile::supportsColor()
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{
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return onSupportsColor();
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}
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} // namespace aria2
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