2 * Copyright 2001-2005 Adrian Thurston <thurston@cs.queensu.ca>
5 /* This file is part of Ragel.
7 * Ragel is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * Ragel is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Ragel; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include "rlgen-dot.h"
47 istream *inStream = 0;
48 ostream *outStream = 0;
49 output_filter *outFilter = 0;
50 char *outputFileName = 0;
52 /* Graphviz dot file generation. */
53 bool graphvizDone = false;
55 int numSplitPartitions = 0;
56 bool displayPrintables = false;
58 /* Print a summary of the options. */
62 "usage: " PROGNAME " [options] file\n"
64 " -h, -H, -?, --help Print this usage and exit\n"
65 " -v, --version Print version information and exit\n"
66 " -o <file> Write output to <file>\n"
68 " -p Display printable characters on labels\n"
72 /* Print version information. */
75 cout << "Ragel Code Generator for Graphviz" << endl <<
76 "Version " VERSION << ", " PUBDATE << endl <<
77 "Copyright (c) 2001-2007 by Adrian Thurston" << endl;
80 /* Total error count. */
81 int gblErrorCount = 0;
86 cerr << PROGNAME ": ";
91 * Callbacks invoked by the XML data parser.
94 /* Invoked by the parser when the root element is opened. */
95 ostream *openOutput( char *inputFile )
97 /* Make sure we are not writing to the same file as the input file. */
98 if ( outputFileName != 0 && strcmp( inputFile, outputFileName ) == 0 ) {
99 error() << "output file \"" << outputFileName <<
100 "\" is the same as the input file" << endl;
103 if ( outputFileName != 0 ) {
104 /* Create the filter on the output and open it. */
105 outFilter = new output_filter( outputFileName );
106 outFilter->open( outputFileName, ios::out|ios::trunc );
107 if ( !outFilter->is_open() ) {
108 error() << "error opening " << outputFileName << " for writing" << endl;
112 /* Open the output stream, attaching it to the filter. */
113 outStream = new ostream( outFilter );
116 /* Writing out ot std out. */
122 /* Invoked by the parser when a ragel definition is opened. */
123 CodeGenData *makeCodeGen( char *sourceFileName, char *fsmName,
124 ostream &out, bool wantComplete )
126 CodeGenData *codeGen = new GraphvizDotGen(out);
128 codeGen->sourceFileName = sourceFileName;
129 codeGen->fsmName = fsmName;
130 codeGen->wantComplete = wantComplete;
136 /* Main, process args and call yyparse to start scanning input. */
137 int main(int argc, char **argv)
139 ParamCheck pc("o:pvHh?-:", argc, argv);
140 char *xmlInputFileName = 0;
142 while ( pc.check() ) {
143 switch ( pc.state ) {
144 case ParamCheck::match:
145 switch ( pc.parameter ) {
148 if ( *pc.parameterArg == 0 )
149 error() << "a zero length output file name was given" << endl;
150 else if ( outputFileName != 0 )
151 error() << "more than one output file name was given" << endl;
153 /* Ok, remember the output file name. */
154 outputFileName = pc.parameterArg;
159 displayPrintables = true;
162 /* Version and help. */
166 case 'H': case 'h': case '?':
170 if ( strcasecmp(pc.parameterArg, "help") == 0 ) {
174 else if ( strcasecmp(pc.parameterArg, "version") == 0 ) {
179 error() << "--" << pc.parameterArg <<
180 " is an invalid argument" << endl;
186 case ParamCheck::invalid:
187 error() << "-" << pc.parameter << " is an invalid argument" << endl;
190 case ParamCheck::noparam:
191 if ( *pc.curArg == 0 )
192 error() << "a zero length input file name was given" << endl;
193 else if ( xmlInputFileName != 0 )
194 error() << "more than one input file name was given" << endl;
196 /* OK, Remember the filename. */
197 xmlInputFileName = pc.curArg;
203 /* Bail on above errors. */
204 if ( gblErrorCount > 0 )
207 /* Open the input file for reading. */
208 if ( xmlInputFileName != 0 ) {
209 /* Open the input file for reading. */
210 ifstream *inFile = new ifstream( xmlInputFileName );
212 if ( ! inFile->is_open() )
213 error() << "could not open " << xmlInputFileName << " for reading" << endl;
216 xmlInputFileName = "<stdin>";
220 /* Bail on above errors. */
221 if ( gblErrorCount > 0 )
224 bool wantComplete = false;
225 bool outputActive = false;
227 /* Parse the input! */
228 xml_parse( *inStream, xmlInputFileName, outputActive, wantComplete );
230 /* If writing to a file, delete the ostream, causing it to flush.
231 * Standard out is flushed automatically. */
232 if ( outputFileName != 0 ) {
237 /* Finished, final check for errors.. */
238 if ( gblErrorCount > 0 ) {
239 /* If we opened an output file, remove it. */
240 if ( outputFileName != 0 )
241 unlink( outputFileName );