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author | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
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committer | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
commit | 469bbcf0701e1eb8a6670c23145b0da87357e178 (patch) | |
tree | b5b062a16e46a6c5d3410b4e574cd0cc09057211 /src/stable/tafreader.cpp | |
parent | ee1b79396076edc4e30aefb285fada03bb45e80d (diff) | |
download | libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.gz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.bz2 libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.xz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.zip |
Code is all reorganized. We're about ready to release. I should write up a
little explenation of the arrangement.
Diffstat (limited to 'src/stable/tafreader.cpp')
-rw-r--r-- | src/stable/tafreader.cpp | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/src/stable/tafreader.cpp b/src/stable/tafreader.cpp new file mode 100644 index 0000000..6708c8c --- /dev/null +++ b/src/stable/tafreader.cpp | |||
@@ -0,0 +1,252 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2007-2011 Xagasoft, All rights reserved. | ||
3 | * | ||
4 | * This file is part of the libbu++ library and is released under the | ||
5 | * terms of the license contained in the file LICENSE. | ||
6 | */ | ||
7 | |||
8 | #include "bu/taf.h" | ||
9 | #include "bu/string.h" | ||
10 | #include "bu/stream.h" | ||
11 | |||
12 | #include <stdlib.h> | ||
13 | |||
14 | using namespace Bu; | ||
15 | |||
16 | Bu::TafReader::TafReader( Bu::Stream &sIn ) : | ||
17 | c( 0 ), | ||
18 | la( 0 ), | ||
19 | sIn( sIn ), | ||
20 | iLine( 1 ), iCol( -1 ) | ||
21 | { | ||
22 | next(); next(); | ||
23 | } | ||
24 | |||
25 | Bu::TafReader::~TafReader() | ||
26 | { | ||
27 | |||
28 | } | ||
29 | |||
30 | Bu::TafGroup *Bu::TafReader::readGroup() | ||
31 | { | ||
32 | ws(); | ||
33 | if( c != '{' ) | ||
34 | throw TafException("%d:%d: Expected '{' got '%c'.", iLine, iCol, c ); | ||
35 | next(); | ||
36 | ws(); | ||
37 | String sName = readStr(); | ||
38 | TafGroup *pGroup = new TafGroup( sName ); | ||
39 | try | ||
40 | { | ||
41 | ws(); | ||
42 | if( c != ':' ) | ||
43 | throw TafException("%d:%d: Expected ':' got '%c'.", | ||
44 | iLine, iCol, c ); | ||
45 | next(); | ||
46 | //printf("Node[%s]:\n", sName.getStr() ); | ||
47 | |||
48 | groupContent( pGroup ); | ||
49 | |||
50 | if( c != '}' ) | ||
51 | throw TafException("%d:%d: Expected '}' got '%c'.", | ||
52 | iLine, iCol, c ); | ||
53 | |||
54 | //next(); | ||
55 | |||
56 | return pGroup; | ||
57 | } | ||
58 | catch(...) | ||
59 | { | ||
60 | delete pGroup; | ||
61 | throw; | ||
62 | } | ||
63 | } | ||
64 | |||
65 | void Bu::TafReader::groupContent( Bu::TafGroup *pGroup ) | ||
66 | { | ||
67 | for(;;) | ||
68 | { | ||
69 | ws(); | ||
70 | if( c == '{' ) | ||
71 | { | ||
72 | pGroup->addChild( readGroup() ); | ||
73 | next(); | ||
74 | } | ||
75 | else if( c == '}' ) | ||
76 | return; | ||
77 | else if( c == '/' && la == '*' ) | ||
78 | pGroup->addChild( readComment() ); | ||
79 | else if( c == '/' && la == '/' ) | ||
80 | pGroup->addChild( readComment( true ) ); | ||
81 | else if( c == ':' ) | ||
82 | throw TafException("%d:%d: Encountered stray ':' in taf stream.", | ||
83 | iLine, iCol ); | ||
84 | else | ||
85 | pGroup->addChild( readProperty() ); | ||
86 | } | ||
87 | } | ||
88 | |||
89 | Bu::TafProperty *Bu::TafReader::readProperty() | ||
90 | { | ||
91 | String sName = readStr(); | ||
92 | ws(); | ||
93 | if( c != '=' ) | ||
94 | { | ||
95 | //printf(" %s (true)\n", sName.getStr() ); | ||
96 | return new Bu::TafProperty( "", sName ); | ||
97 | } | ||
98 | next(); | ||
99 | String sValue = readStr(); | ||
100 | return new Bu::TafProperty( sName, sValue ); | ||
101 | //printf(" %s = %s\n", sName.getStr(), sValue.getStr() ); | ||
102 | } | ||
103 | |||
104 | Bu::TafComment *Bu::TafReader::readComment( bool bEOL ) | ||
105 | { | ||
106 | String sCmnt; | ||
107 | next(); | ||
108 | if( bEOL ) | ||
109 | { | ||
110 | for(;;) | ||
111 | { | ||
112 | next(); | ||
113 | if( c == '\n' && la == '\r' ) | ||
114 | { | ||
115 | next(); next(); | ||
116 | break; | ||
117 | } | ||
118 | else if( c == '\n' || c == '\r' ) | ||
119 | { | ||
120 | next(); | ||
121 | break; | ||
122 | } | ||
123 | sCmnt += c; | ||
124 | } | ||
125 | } | ||
126 | else | ||
127 | { | ||
128 | for(;;) | ||
129 | { | ||
130 | next(); | ||
131 | if( c == '*' && la == '/' ) | ||
132 | { | ||
133 | next(); next(); | ||
134 | break; | ||
135 | } | ||
136 | sCmnt += c; | ||
137 | } | ||
138 | } | ||
139 | |||
140 | return new TafComment( sCmnt, bEOL ); | ||
141 | } | ||
142 | |||
143 | Bu::String Bu::TafReader::readStr() | ||
144 | { | ||
145 | ws(); | ||
146 | String s; | ||
147 | if( c == '"' ) | ||
148 | { | ||
149 | next(); | ||
150 | for(;;) | ||
151 | { | ||
152 | if( c == '\\' ) | ||
153 | { | ||
154 | next(); | ||
155 | if( c == 'x' ) | ||
156 | { | ||
157 | char code[3]={'\0','\0','\0'}; | ||
158 | next(); | ||
159 | code[0] = c; | ||
160 | next(); | ||
161 | code[1] = c; | ||
162 | c = (unsigned char)strtol( code, NULL, 16 ); | ||
163 | } | ||
164 | else if( c == '"' ) | ||
165 | c = '"'; | ||
166 | else if( c == '\\' ) | ||
167 | c = '\\'; | ||
168 | else if( c == 'n' ) | ||
169 | c = '\n'; | ||
170 | else if( c == 't' ) | ||
171 | c = '\t'; | ||
172 | else | ||
173 | throw TafException("%d:%d: Invalid escape sequence '\\%c'.", | ||
174 | iLine, iCol, c ); | ||
175 | } | ||
176 | else if( c == '"' ) | ||
177 | break; | ||
178 | s += c; | ||
179 | next(); | ||
180 | } | ||
181 | next(); | ||
182 | } | ||
183 | else | ||
184 | { | ||
185 | for(;;) | ||
186 | { | ||
187 | if( isws() || c == '}' || c == '{' || c == ':' || c == '=' ) | ||
188 | break; | ||
189 | s += c; | ||
190 | next(); | ||
191 | } | ||
192 | } | ||
193 | |||
194 | return s; | ||
195 | } | ||
196 | |||
197 | void Bu::TafReader::ws() | ||
198 | { | ||
199 | for(;;) | ||
200 | { | ||
201 | if( !isws() ) | ||
202 | return; | ||
203 | |||
204 | next(); | ||
205 | } | ||
206 | } | ||
207 | |||
208 | bool Bu::TafReader::isws() | ||
209 | { | ||
210 | return (c == ' ' || c == '\t' || c == '\n' || c == '\r'); | ||
211 | } | ||
212 | |||
213 | void Bu::TafReader::next() | ||
214 | { | ||
215 | if( c == '\n' ) | ||
216 | { | ||
217 | iLine++; | ||
218 | iCol = 1; | ||
219 | } | ||
220 | else | ||
221 | iCol++; | ||
222 | if( c == '}' ) | ||
223 | { | ||
224 | rawread( &c ); | ||
225 | if( c != '}' ) | ||
226 | rawread( &la ); | ||
227 | } | ||
228 | else | ||
229 | { | ||
230 | c = la; | ||
231 | if( c != '}' ) | ||
232 | rawread( &la ); | ||
233 | } | ||
234 | } | ||
235 | |||
236 | void Bu::TafReader::rawread( char *c ) | ||
237 | { | ||
238 | if( sIn.read( c, 1 ) < 1 ) | ||
239 | { | ||
240 | if( sIn.isEos() ) | ||
241 | { | ||
242 | throw TafException("%d:%d: Premature end of stream.", | ||
243 | iLine, iCol, c ); | ||
244 | } | ||
245 | else | ||
246 | { | ||
247 | throw TafException("%d:%d: No data read, but not end of stream?", | ||
248 | iLine, iCol, c ); | ||
249 | } | ||
250 | } | ||
251 | } | ||
252 | |||