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BasicUsageEnvironment0.cpp
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108 lines (84 loc) · 3.2 KB
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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library 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 Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**********/
// Copyright (c) 1996-2025 Live Networks, Inc. All rights reserved.
// Basic Usage Environment: for a simple, non-scripted, console application
// Implementation
#include "BasicUsageEnvironment0.hh"
#include <stdio.h>
#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
#define snprintf _snprintf
#endif
////////// BasicUsageEnvironment //////////
BasicUsageEnvironment0::BasicUsageEnvironment0(TaskScheduler& taskScheduler)
: UsageEnvironment(taskScheduler),
fBufferMaxSize(RESULT_MSG_BUFFER_MAX) {
reset();
}
BasicUsageEnvironment0::~BasicUsageEnvironment0() {
}
void BasicUsageEnvironment0::reset() {
fCurBufferSize = 0;
fResultMsgBuffer[fCurBufferSize] = '\0';
}
// Implementation of virtual functions:
char const* BasicUsageEnvironment0::getResultMsg() const {
return fResultMsgBuffer;
}
void BasicUsageEnvironment0::setResultMsg(MsgString msg) {
reset();
appendToResultMsg(msg);
}
void BasicUsageEnvironment0::setResultMsg(MsgString msg1, MsgString msg2) {
setResultMsg(msg1);
appendToResultMsg(msg2);
}
void BasicUsageEnvironment0::setResultMsg(MsgString msg1, MsgString msg2,
MsgString msg3) {
setResultMsg(msg1, msg2);
appendToResultMsg(msg3);
}
void BasicUsageEnvironment0::setResultErrMsg(MsgString msg, int err) {
setResultMsg(msg);
if (err == 0) err = getErrno();
#if defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_WCE)
#ifndef _UNICODE
char errMsg[RESULT_MSG_BUFFER_MAX] = "\0";
if (0 != FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0, errMsg, sizeof(errMsg)/sizeof(errMsg[0]), NULL)) {
// Remove all trailing '\r', '\n' and '.'
for (char* p = errMsg + strlen(errMsg); p != errMsg && (*p == '\r' || *p == '\n' || *p == '.' || *p == '\0'); --p) {
*p = '\0';
}
} else
snprintf(errMsg, sizeof(errMsg)/sizeof(errMsg[0]), "error %d", err);
appendToResultMsg(errMsg);
#endif
#else
appendToResultMsg(strerror(err));
#endif
}
void BasicUsageEnvironment0::appendToResultMsg(MsgString msg) {
char* curPtr = &fResultMsgBuffer[fCurBufferSize];
unsigned spaceAvailable = fBufferMaxSize - fCurBufferSize;
unsigned msgLength = strlen(msg);
// Copy only enough of "msg" as will fit:
if (msgLength > spaceAvailable-1) {
msgLength = spaceAvailable-1;
}
memmove(curPtr, (char*)msg, msgLength);
fCurBufferSize += msgLength;
fResultMsgBuffer[fCurBufferSize] = '\0';
}
void BasicUsageEnvironment0::reportBackgroundError() {
fputs(getResultMsg(), stderr);
}