summaryrefslogtreecommitdiffstats
path: root/tools/linguist/shared/proparser.cpp
blob: 6095d48de578e1e4e89a9be0d5aad44e13254ea8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
/**********************************************************************
** Copyright (C) 2000-2008 Trolltech ASA.  All rights reserved.
**
** This file is part of TQt Linguist.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at [email protected].
**
** Licensees holding valid TQt Commercial licenses may use this file in
** accordance with the TQt Commercial License Agreement provided with
** the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#include "proparser.h"

#include <qdir.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qregexp.h>
#include <qstringlist.h>
#include <qtextstream.h>

#ifdef Q_OS_UNIX
#include <unistd.h>
#endif

#ifdef Q_OS_WIN32
#define QT_POPEN _popen
#else
#define QT_POPEN popen
#endif

TQString loadFile( const TQString &fileName )
{
    TQFile file( fileName );
    if ( !file.open(IO_ReadOnly) ) {
	fprintf( stderr, "error: Cannot load '%s': %s\n",
		 file.name().latin1(),
		 file.errorString().latin1() );
	return TQString();
    }

    TQTextStream in( &file );
    return in.read();
}

TQMap<TQString, TQString> proFileTagMap( const TQString& text )
{
    TQString t = text;
    TQMap<TQString, TQString> tagMap;
    bool stillProcess = true; // If include() has a $$tag then we need to reprocess
    
    while(stillProcess) {

	/* 
	    Strip any commments before we try to include.  We
	    still need to do it after we include to make sure the
	    included file does not have comments
	*/
	t.replace( TQRegExp(TQString("#[^\n]*\n")), TQString(" ") );

	/*
	    Process include() commands.
	    $$PWD is a special case so we have to change it while 
	    we know where the included file is.
        */
	TQRegExp callToInclude("include\\s*\\(\\s*([^()\\s]+)\\s*\\)");
	int i = 0;
	while ( (i = callToInclude.search(t, i)) != -1 ) {
	    bool doneWithVar = false;
	    TQString fileName = callToInclude.cap(1);
	    TQString after = fileName.replace("$$PWD", TQDir::currentDirPath());
	    if (!tagMap.isEmpty() && after.contains("$$")) {
		TQRegExp var( "\\$\\$[({]?([a-zA-Z0-9_]+)[)}]?" );
		int ii = 0;
		while ((ii = after.find(var, ii)) != -1) {
		    if (tagMap.contains(var.cap(1))) {
			after.replace(ii, var.cap(0).length(), tagMap[var.cap(1)]);
		    } else { // Couldn't find it
			doneWithVar = true;
			break;
		    }
		}
		
	    }
	    if (doneWithVar || !after.contains("$$")) {
		after = loadFile(after);
		TQFileInfo fi(callToInclude.cap(1));
		after.replace("$$PWD", fi.dirPath());
		t.replace( i, callToInclude.matchedLength(), after );
	    }
	    i += after.length();
	}

	/*
	    Strip comments, merge lines ending with backslash, add
	    spaces around '=' and '+=', replace '\n' with ';', and
	    simplify white spaces.
	*/
	t.replace( TQRegExp(TQString("#[^\n]*\n")), TQString(" ") );
	t.replace( TQRegExp(TQString("\\\\[^\n\\S]*\n")), TQString(" ") );
	t.replace( "=", TQString(" = ") );
	t.replace( "+ =", TQString(" += ") );
	t.replace( "\n", TQString(";") );
	t = t.simplifyWhiteSpace();
	
	/*
	    Populate tagMap with 'key = value' entries.
	*/
	TQStringList lines = TQStringList::split( TQChar(';'), t );
	TQStringList::Iterator line;
	for ( line = lines.begin(); line != lines.end(); ++line ) {
	    TQStringList toks = TQStringList::split( TQChar(' '), *line );
	    
	    if ( toks.count() >= 3 && 
		(toks[1] == TQString("=") || toks[1] == TQString("+=")) ) {
		TQString tag = toks.first();
		int k = tag.findRev( TQChar(':') ); // as in 'unix:'
		if ( k != -1 )
		    tag = tag.mid( k + 1 );
		toks.remove( toks.begin() );
		
		TQString action = toks.first();
		toks.remove( toks.begin() );
		
		if ( tagMap.contains(tag) ) {
		    if ( action == TQString("=") )
			tagMap.replace( tag, toks.join(TQChar(' ')) );
		    else
			tagMap[tag] += TQChar( ' ' ) + toks.join( TQChar(' ') );
		} else {
		    tagMap[tag] = toks.join( TQChar(' ') );
		}
	    }
	}
	
	/*
	    Expand $$variables within the 'value' part of a 'key = value'
	    pair.
	*/
	TQRegExp var( "\\$\\$[({]?([a-zA-Z0-9_]+)[)}]?" );
	TQMap<TQString, TQString>::Iterator it;
	for ( it = tagMap.begin(); it != tagMap.end(); ++it ) {
	    int i = 0;
	    while ( (i = var.search((*it), i)) != -1 ) {
		int len = var.matchedLength();
		TQString invocation = var.cap(1);
		TQString after;
		
		if ( invocation == "system" ) {
		    // skip system(); it will be handled in the next pass
		    ++i;
		} else {
		    if ( tagMap.contains(invocation) )
			after = tagMap[invocation];
		    else if (invocation.lower() == "pwd")
			after = TQDir::currentDirPath();
		    (*it).replace( i, len, after );
		    i += after.length();
		}
	    }
	}
    
	/*
	  Execute system() calls.
	*/
	TQRegExp callToSystem( "\\$\\$system\\s*\\(([^()]*)\\)" );
	for ( it = tagMap.begin(); it != tagMap.end(); ++it ) {
	    int i = 0;
	    while ( (i = callToSystem.search((*it), i)) != -1 ) {
		/*
		  This code is stolen from qmake's project.cpp file.
		  Ideally we would use the same parser, so we wouldn't
		  have this code duplication.
		*/
		TQString after;
		char buff[256];
		FILE *proc = QT_POPEN( callToSystem.cap(1).latin1(), "r" );
		while ( proc && !feof(proc) ) {
		    int read_in = (int)fread( buff, 1, 255, proc );
		    if ( !read_in )
			break;
		    for ( int i = 0; i < read_in; i++ ) {
			if ( buff[i] == '\n' || buff[i] == '\t' )
			    buff[i] = ' ';
		    }
		    buff[read_in] = '\0';
		    after += buff;
		}
		pclose( proc );
		(*it).replace( i, callToSystem.matchedLength(), after );
		i += after.length();
	    }
	}
	stillProcess = callToInclude.search(t) != -1;
    }
    return tagMap;
}