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