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/**
* @file iodevice.cc
* @brief Implementation of the IODevice class.
* @author Andreas Aardal Hanssen
* @date 2002, 2003
*/
#include "iodevice.h"
#include "convert.h" // BincStream
#include "session.h" // getEnv/hasEnv
#include <stdlib.h>
#include <unistd.h>
using namespace Binc;
using std::ostream;
IODevice::IODevice(int f)
: flags(f | IsEnabled)
, maxInputBufferSize(0)
, maxOutputBufferSize(0)
, timeout(0)
, readCount(0)
, writeCount(0)
, outputLevel(ErrorLevel)
, outputLevelLimit(ErrorLevel)
, error(Unknown)
, errorString("Unknown device error")
, dumpfd(0)
{}
IODevice::~IODevice() {}
IODevice &IODevice::operator<<(ostream &(*source)(ostream &))
{
if (!(flags & IsEnabled) || outputLevel > outputLevelLimit) return *this;
static ostream &(*endl_funcptr)(ostream &) = std::endl;
if (source != endl_funcptr) return *this;
outputBuffer << "\r\n";
if (dumpfd) ::write(dumpfd, "\r\n", 2);
if (flags & FlushesOnEndl) {
flush();
} else if (flags & HasOutputLimit) {
if (outputBuffer.getSize() > maxOutputBufferSize) flush();
}
return *this;
}
bool IODevice::canRead() const
{
return false;
}
void IODevice::clear()
{
if (!(flags & IsEnabled)) return;
inputBuffer.clear();
outputBuffer.clear();
}
bool IODevice::flush()
{
if (!(flags & IsEnabled)) return true;
WriteResult writeResult = WriteWait;
do {
unsigned int s = outputBuffer.getSize();
if (s == 0) break;
if (!waitForWrite()) return false;
writeResult = write();
if (writeResult == WriteError) return false;
writeCount += s - outputBuffer.getSize();
} while (outputBuffer.getSize() > 0 && writeResult == WriteWait);
outputBuffer.clear();
return true;
}
void IODevice::setFlags(unsigned int f)
{
flags |= f;
}
void IODevice::clearFlags(unsigned int f)
{
flags &= ~f;
}
void IODevice::setMaxInputBufferSize(unsigned int max)
{
maxInputBufferSize = max;
}
void IODevice::setMaxOutputBufferSize(unsigned int max)
{
maxOutputBufferSize = max;
}
void IODevice::setTimeout(unsigned int t)
{
timeout = t;
if (t)
flags |= HasTimeout;
else
flags &= ~HasTimeout;
}
unsigned int IODevice::getTimeout() const
{
return timeout;
}
void IODevice::setOutputLevel(LogLevel level)
{
outputLevel = level;
}
IODevice::LogLevel IODevice::getOutputLevel() const
{
return outputLevel;
}
void IODevice::setOutputLevelLimit(LogLevel level)
{
outputLevelLimit = level;
}
IODevice::LogLevel IODevice::getOutputLevelLimit() const
{
return outputLevelLimit;
}
bool IODevice::readStr(std::string *dest, unsigned int max)
{
// If max is 0, fill the input buffer once only if it's empty.
if (!max && inputBuffer.getSize() == 0 && !fillInputBuffer()) return false;
// If max is != 0, wait until we have max.
while (max && inputBuffer.getSize() < max)
if (!fillInputBuffer()) return false;
unsigned int bytesToRead = max ? max : inputBuffer.getSize();
*dest += inputBuffer.str().substr(0, bytesToRead);
if (dumpfd) ::write(dumpfd, inputBuffer.str().substr(0, bytesToRead).c_str(), bytesToRead);
inputBuffer.popString(bytesToRead);
readCount += bytesToRead;
return true;
}
bool IODevice::readChar(char *dest)
{
if (inputBuffer.getSize() == 0 && !fillInputBuffer()) return false;
char c = inputBuffer.popChar();
if (dest) *dest = c;
if (dumpfd) ::write(dumpfd, &c, 1);
++readCount;
return true;
}
void IODevice::unreadChar(char c)
{
inputBuffer.unpopChar(c);
}
void IODevice::unreadStr(const std::string &s)
{
inputBuffer.unpopStr(s);
}
bool IODevice::skipTo(char c)
{
char dest = '\0';
do {
if (!readChar(&dest)) return false;
if (dumpfd) ::write(dumpfd, &dest, 1);
} while (c != dest);
return true;
}
std::string IODevice::service() const
{
return "nul";
}
bool IODevice::waitForWrite() const
{
return false;
}
bool IODevice::waitForRead() const
{
return false;
}
IODevice::WriteResult IODevice::write()
{
return WriteError;
}
bool IODevice::fillInputBuffer()
{
return false;
}
IODevice::Error IODevice::getLastError() const
{
return error;
}
std::string IODevice::getLastErrorString() const
{
return errorString;
}
unsigned int IODevice::getReadCount() const
{
return readCount;
}
unsigned int IODevice::getWriteCount() const
{
return writeCount;
}
void IODevice::enableProtocolDumping()
{
BincStream ss;
ss << "/tmp/bincimap-dump-" << static_cast<int>(time(nullptr)) << "-"
<< Session::getInstance().getIP() << "-XXXXXX";
std::string safename = ss.str();
dumpfd = mkstemp(safename.data());
if (dumpfd == -1) dumpfd = 0;
}
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