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File: [Pegasus] / pegasus / src / Pegasus / WQL / WQLParser.cpp
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Revision: 1.3, Fri Jan 11 17:41:58 2002 UTC (22 years, 5 months ago) by mike Branch: MAIN CVS Tags: pre-meta-dispatcher, async_dispatcher, VERSION_1_09, VERSION_1_08, VERSION_1_07 Changes since 1.2: +28 -5 lines Added two more versions of WQLParser::parse(): one which takes a char* for the text and the other that takes a String. Also, fixed parse so that it clears the statement before parsing. |
//%///////////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001 BMC Software, Hewlett-Packard Company, IBM, // The Open Group, Tivoli Systems // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // // Author: Mike Brasher (mbrasher@bmc.com) // // Modified By: // //%///////////////////////////////////////////////////////////////////////////// #include <Pegasus/Common/Config.h> #include <Pegasus/Common/Exception.h> #include <Pegasus/Common/Destroyer.h> #include <iostream> #include "WQLParser.h" #include "WQLParserState.h" PEGASUS_USING_STD; extern int WQL_parse(); PEGASUS_NAMESPACE_BEGIN WQLParserState* globalParserState = 0; void WQLParser::parse( const char* text, WQLSelectStatement& statement) { if (!text) throw NullPointer(); statement.clear(); globalParserState = new WQLParserState; globalParserState->error = false; globalParserState->text = text; globalParserState->textSize = strlen(text) + 1; globalParserState->offset = 0; globalParserState->statement = &statement; WQL_parse(); if (globalParserState->error) { String errorMessage = globalParserState->errorMessage; cleanup(); delete globalParserState; throw ParseError(errorMessage); } cleanup(); delete globalParserState; } void WQLParser::parse( const Array<Sint8>& text, WQLSelectStatement& statement) { if (text.size() == 0 || text[text.size() - 1] != '\0') throw MissingNullTerminator(); parse(text.getData(), statement); } void WQLParser::parse( const String& text, WQLSelectStatement& statement) { char* tmpText = text.allocateCString(); ArrayDestroyer<char> destroyer(tmpText); parse(tmpText, statement); } void WQLParser::cleanup() { Array<char*>& arr = globalParserState->outstandingStrings; for (Uint32 i = 0, n = arr.size(); i < n; i++) delete [] arr[i]; arr.clear(); } PEGASUS_NAMESPACE_END PEGASUS_USING_PEGASUS; int WQL_error(char* errorMessage) { globalParserState->error = true; globalParserState->errorMessage = errorMessage; return -1; } int WQLInput(char* buffer, int& numRead, int numRequested) { // // Be sure to account for the null terminator (the size of the text will // be one or more; this is fixed checked beforehand by WQLParser::parse()). // int remaining = globalParserState->textSize - globalParserState->offset - 1; if (remaining == 0) { numRead = 0; return 0; } if (remaining < numRequested) numRequested = remaining; memcpy(buffer, globalParserState->text + globalParserState->offset, numRequested); globalParserState->offset += numRequested; numRead = numRequested; return numRead; }
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