1 karl 1.16 //%2005////////////////////////////////////////////////////////////////////////
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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 karl 1.16 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
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11 mike 1.2 //
12 // Permission is hereby granted, free of charge, to any person obtaining a copy
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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
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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 //
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19 kumpf 1.6 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
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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
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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
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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 //
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32 david.dillard 1.14 // Modified By: David Dillard, VERITAS Software Corp.
33 // (david.dillard@veritas.com)
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34 joyce.j 1.15 // Josephine Eskaline Joyce (jojustin@in.ibm.com) for PEP#101
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35 mike 1.2 //
36 //%/////////////////////////////////////////////////////////////////////////////
37
38 #include <Pegasus/Common/Config.h>
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39 kumpf 1.7 #include <Pegasus/Common/InternalException.h>
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40 kumpf 1.4 #include <Pegasus/Common/Tracer.h>
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41 kumpf 1.5 #include <Pegasus/Common/PegasusVersion.h>
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42 humberto 1.13 #include <Pegasus/Common/IPC.h>
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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();
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50 kumpf 1.10 extern void WQL_restart (FILE *input_file);
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51 mike 1.2
52 PEGASUS_NAMESPACE_BEGIN
53
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54 karl 1.17 WQLParserState* globalParserState = 0;
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55 humberto 1.13 static Mutex WQL_mutex;
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56 mike 1.2
57 void WQLParser::parse(
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58 mike 1.3 const char* text,
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59 mike 1.2 WQLSelectStatement& statement)
60 {
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61 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse");
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62 humberto 1.13
63 AutoMutex mtx(WQL_mutex);
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64 kumpf 1.4
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65 mike 1.3 if (!text)
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66 kumpf 1.4 {
67 PEG_METHOD_EXIT();
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68 mike 1.3 throw NullPointer();
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69 kumpf 1.4 }
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70 mike 1.3
71 statement.clear();
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72 mike 1.2
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73 karl 1.17 globalParserState = new WQLParserState;
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74 mike 1.2 globalParserState->error = false;
75 globalParserState->text = text;
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76 mike 1.3 globalParserState->textSize = strlen(text) + 1;
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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();
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86 karl 1.17 delete globalParserState;
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87 kumpf 1.4 PEG_METHOD_EXIT();
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88 mike 1.2 throw ParseError(errorMessage);
89 }
90
91 cleanup();
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92 karl 1.17 delete globalParserState;
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93 kumpf 1.4 PEG_METHOD_EXIT();
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94 mike 1.2 }
95
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96 mike 1.3 void WQLParser::parse(
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97 mike 1.19 const Buffer& text,
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98 mike 1.3 WQLSelectStatement& statement)
99 {
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100 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse");
101
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102 mike 1.3 if (text.size() == 0 || text[text.size() - 1] != '\0')
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103 kumpf 1.4 {
104 PEG_METHOD_EXIT();
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105 mike 1.3 throw MissingNullTerminator();
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106 kumpf 1.4 }
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107 mike 1.3
108 parse(text.getData(), statement);
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109 kumpf 1.4 PEG_METHOD_EXIT();
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110 mike 1.3 }
111
112 void WQLParser::parse(
113 const String& text,
114 WQLSelectStatement& statement)
115 {
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116 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::parse");
117
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118 kumpf 1.9 parse(text.getCString(), statement);
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119 kumpf 1.4
120 PEG_METHOD_EXIT();
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121 mike 1.3 }
122
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123 mike 1.2 void WQLParser::cleanup()
124 {
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125 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLParser::cleanup");
126
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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();
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133 kumpf 1.4
134 PEG_METHOD_EXIT();
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135 mike 1.2 }
136
137 PEGASUS_NAMESPACE_END
138
139 PEGASUS_USING_PEGASUS;
140
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141 kumpf 1.8 int WQL_error(const char* errorMessage)
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142 mike 1.2 {
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143 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQL_error");
144
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145 mike 1.2 globalParserState->error = true;
146 globalParserState->errorMessage = errorMessage;
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147 kumpf 1.10
148 //
149 // flex does not automatically flush the input buffer in case of error
150 //
151 WQL_restart (0);
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152 kumpf 1.4
153 PEG_METHOD_EXIT();
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154 mike 1.2 return -1;
155 }
156
157 int WQLInput(char* buffer, int& numRead, int numRequested)
158 {
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159 kumpf 1.4 PEG_METHOD_ENTER(TRC_WQL,"WQLInput");
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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 =
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166 mike 1.3 globalParserState->textSize - globalParserState->offset - 1;
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167 mike 1.2
168 if (remaining == 0)
169 {
170 numRead = 0;
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171 kumpf 1.4 PEG_METHOD_EXIT();
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172 mike 1.2 return 0;
173 }
174
175 if (remaining < numRequested)
176 numRequested = remaining;
177
178 memcpy(buffer,
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179 mike 1.3 globalParserState->text + globalParserState->offset,
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180 mike 1.2 numRequested);
181
182 globalParserState->offset += numRequested;
183 numRead = numRequested;
184
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185 kumpf 1.4 PEG_METHOD_EXIT();
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186 mike 1.2 return numRead;
187 }
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