pegasus/src/Pegasus/WQL/WQLParser.cpp - annotate

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1 karl 1.16 //%2005////////////////////////////////////////////////////////////////////////
2 mike 1.2 //
3 karl 1.12 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development 4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. 5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
6 karl 1.11 // IBM Corp.; EMC Corporation, The Open Group.
7 karl 1.12 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; 8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
9 karl 1.16 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; 10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
11 mike 1.2 // 12 // Permission is hereby granted, free of charge, to any person obtaining a copy
13 kumpf 1.6 // of this software and associated documentation files (the "Software"), to 14 // deal in the Software without restriction, including without limitation the 15 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
16 mike 1.2 // sell copies of the Software, and to permit persons to whom the Software is 17 // furnished to do so, subject to the following conditions: 18 //
19 kumpf 1.6 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
20 mike 1.2 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED 21 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
22 kumpf 1.6 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 23 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 24 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 mike 1.2 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 // 28 //============================================================================== 29 // 30 // Author: Mike Brasher (mbrasher@bmc.com) 31 //
32 david.dillard 1.14 // Modified By: David Dillard, VERITAS Software Corp. 33 // (david.dillard@veritas.com)
34 joyce.j 1.15 // Josephine Eskaline Joyce (jojustin@in.ibm.com) for PEP#101
35 mike 1.2 // 36 //%///////////////////////////////////////////////////////////////////////////// 37 38 #include <Pegasus/Common/Config.h>
39 kumpf 1.7 #include <Pegasus/Common/InternalException.h>
40 kumpf 1.4 #include <Pegasus/Common/Tracer.h>
41 kumpf 1.5 #include <Pegasus/Common/PegasusVersion.h>
42 humberto 1.13 #include <Pegasus/Common/IPC.h>
43 mike 1.2 #include <iostream> 44 #include "WQLParser.h" 45 #include "WQLParserState.h" 46 47 PEGASUS_USING_STD; 48 49 extern int WQL_parse();
50 kumpf 1.10 extern void WQL_restart (FILE *input_file);
51 mike 1.2 52 PEGASUS_NAMESPACE_BEGIN 53
54 karl 1.17 WQLParserState* globalParserState = 0;
55 humberto 1.13 static Mutex WQL_mutex;
56 mike 1.2 57 void WQLParser::parse(
58 mike 1.3 const char* text,
59 mike 1.2 WQLSelectStatement& statement) 60 {
61 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse");
62 humberto 1.13 63 AutoMutex mtx(WQL_mutex);
64 kumpf 1.4
65 mike 1.3 if (!text)
66 kumpf 1.4 { 67 PEG_METHOD_EXIT();
68 mike 1.3 throw NullPointer();
69 kumpf 1.4 }
70 mike 1.3 71 statement.clear();
72 mike 1.2
73 karl 1.17 globalParserState = new WQLParserState;
74 mike 1.2 globalParserState->error = false; 75 globalParserState->text = text;
76 mike 1.3 globalParserState->textSize = strlen(text) + 1;
77 mike 1.2 globalParserState->offset = 0; 78 globalParserState->statement = &statement; 79 80 WQL_parse(); 81 82 if (globalParserState->error) 83 { 84 String errorMessage = globalParserState->errorMessage; 85 cleanup();
86 karl 1.17 delete globalParserState;
87 kumpf 1.4 PEG_METHOD_EXIT();
88 mike 1.2 throw ParseError(errorMessage); 89 } 90 91 cleanup();
92 karl 1.17 delete globalParserState;
93 kumpf 1.4 PEG_METHOD_EXIT();
94 mike 1.2 } 95
96 mike 1.3 void WQLParser::parse(
97 david.dillard 1.14 const Array<char>& text,
98 mike 1.3 WQLSelectStatement& statement) 99 {
100 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); 101
102 mike 1.3 if (text.size() == 0 \|\| text[text.size() - 1] != '\0')
103 kumpf 1.4 { 104 PEG_METHOD_EXIT();
105 mike 1.3 throw MissingNullTerminator();
106 kumpf 1.4 }
107 mike 1.3 108 parse(text.getData(), statement);
109 kumpf 1.4 PEG_METHOD_EXIT();
110 mike 1.3 } 111 112 void WQLParser::parse( 113 const String& text, 114 WQLSelectStatement& statement) 115 {
116 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse"); 117
118 kumpf 1.9 parse(text.getCString(), statement);
119 kumpf 1.4 120 PEG_METHOD_EXIT();
121 mike 1.3 } 122
123 mike 1.2 void WQLParser::cleanup() 124 {
125 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::cleanup"); 126
127 mike 1.2 Array<char*>& arr = globalParserState->outstandingStrings; 128 129 for (Uint32 i = 0, n = arr.size(); i < n; i++) 130 delete [] arr[i]; 131 132 arr.clear();
133 kumpf 1.4 134 PEG_METHOD_EXIT();
135 mike 1.2 } 136 137 PEGASUS_NAMESPACE_END 138 139 PEGASUS_USING_PEGASUS; 140
141 kumpf 1.8 int WQL_error(const char* errorMessage)
142 mike 1.2 {
143 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQL_error"); 144
145 mike 1.2 globalParserState->error = true; 146 globalParserState->errorMessage = errorMessage;
147 kumpf 1.10 148 // 149 // flex does not automatically flush the input buffer in case of error 150 // 151 WQL_restart (0);
152 kumpf 1.4 153 PEG_METHOD_EXIT();
154 mike 1.2 return -1; 155 } 156 157 int WQLInput(char* buffer, int& numRead, int numRequested) 158 {
159 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLInput");
160 mike 1.2 // 161 // Be sure to account for the null terminator (the size of the text will 162 // be one or more; this is fixed checked beforehand by WQLParser::parse()). 163 // 164 165 int remaining =
166 mike 1.3 globalParserState->textSize - globalParserState->offset - 1;
167 mike 1.2 168 if (remaining == 0) 169 { 170 numRead = 0;
171 kumpf 1.4 PEG_METHOD_EXIT();
172 mike 1.2 return 0; 173 } 174 175 if (remaining < numRequested) 176 numRequested = remaining; 177 178 memcpy(buffer,
179 mike 1.3 globalParserState->text + globalParserState->offset,
180 mike 1.2 numRequested); 181 182 globalParserState->offset += numRequested; 183 numRead = numRequested; 184
185 kumpf 1.4 PEG_METHOD_EXIT();
186 mike 1.2 return numRead; 187 }

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