2 * Copyright 2001-2007 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 extern istream *inStream;
48 extern ostream *outStream;
49 extern output_filter *outFilter;
50 extern const char *outputFileName;
52 /* Graphviz dot file generation. */
53 extern bool graphvizDone;
54 extern bool displayPrintables;
56 extern int numSplitPartitions;
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;
83 cerr << PROGNAME ": ";
88 * Callbacks invoked by the XML data parser.
91 /* Invoked by the parser when the root element is opened. */
92 ostream *dotOpenOutput( char *inputFile )
94 /* Make sure we are not writing to the same file as the input file. */
95 if ( outputFileName != 0 && strcmp( inputFile, outputFileName ) == 0 ) {
96 dot_error() << "output file \"" << outputFileName <<
97 "\" is the same as the input file" << endl;
100 if ( outputFileName != 0 ) {
101 /* Create the filter on the output and open it. */
102 outFilter = new output_filter( outputFileName );
103 outFilter->open( outputFileName, ios::out|ios::trunc );
104 if ( !outFilter->is_open() ) {
105 dot_error() << "error opening " << outputFileName << " for writing" << endl;
109 /* Open the output stream, attaching it to the filter. */
110 outStream = new ostream( outFilter );
113 /* Writing out ot std out. */
119 /* Invoked by the parser when a ragel definition is opened. */
120 CodeGenData *dotMakeCodeGen( char *sourceFileName, char *fsmName,
121 ostream &out, bool wantComplete )
123 CodeGenData *codeGen = new GraphvizDotGen(out);
125 codeGen->sourceFileName = sourceFileName;
126 codeGen->fsmName = fsmName;
127 codeGen->wantComplete = wantComplete;
133 /* Main, process args and call yyparse to start scanning input. */
134 int dot_main( const char *xmlInputFileName )
136 /* Open the input file for reading. */
137 ifstream *inFile = new ifstream( xmlInputFileName );
139 if ( ! inFile->is_open() )
140 dot_error() << "could not open " << xmlInputFileName << " for reading" << endl;
142 /* Bail on above errors. */
143 if ( gblErrorCount > 0 )
146 bool wantComplete = false;
147 bool outputActive = false;
149 /* Parse the input! */
150 xml_parse( *inStream, xmlInputFileName, outputActive, wantComplete );
152 /* If writing to a file, delete the ostream, causing it to flush.
153 * Standard out is flushed automatically. */
154 if ( outputFileName != 0 ) {
159 /* Finished, final check for errors.. */
160 if ( gblErrorCount > 0 ) {
161 /* If we opened an output file, remove it. */
162 if ( outputFileName != 0 )
163 unlink( outputFileName );