summaryrefslogtreecommitdiffstats
path: root/tools/porting/src/port.cpp
blob: 2a7af48c9d0471ace1d95b3abf95400f95b3fdce (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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the qt3to4 porting application of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "projectporter.h"
#include "fileporter.h"
#include "logger.h"
#include "preprocessorcontrol.h"

#include <QString>
#include <QFile>
#include <QFileInfo>
#include <QDir>
#include <QByteArray>
#include <QBuffer>
#include <QTextStream>
#include <QCoreApplication>
#include <QLibraryInfo>
#include <QtDebug>

QT_BEGIN_NAMESPACE

QString rulesFilePath;
QString applicationDirPath;

QString findRulesFile(const QString &fileName)
{
    // Check QLibraryInfo::DataPath/filename
    QString filePath;
    filePath = QDir::cleanPath(QLibraryInfo::location(QLibraryInfo::DataPath) + QLatin1String("/") + fileName)  ;
    if (QFile::exists(filePath))
        return QFileInfo(filePath).canonicalFilePath();

    // Check QLibraryInfo::PrefixPath/tools/porting/src/filename
    filePath = QDir::cleanPath(QLibraryInfo::location(QLibraryInfo::PrefixPath) + QLatin1String("/tools/porting/src/") + fileName);
    if (QFile::exists(filePath))
        return QFileInfo(filePath).canonicalFilePath();

    //no luck
    return QString();
}

/*
    A option contains an argument and its help text.
*/
class Option
{
public:
    Option(const QString &argument, const QString &description)
    :argument(argument), description(description) {}

    /*
        Checks if candidateArgument matches the options argument.
    */
    bool checkArgument(const QString &candidateArgument) const
    {
        return (candidateArgument == argument) ||
               (candidateArgument.toLower() == argument.toLower());
    }

    QString argument;
    QString description;
};

typedef QList<Option> OptionList;

void usage(const OptionList &optionList)
{
    printf("Tool for porting Qt 3 applications to Qt 4, using the compatibility library\n");
    printf("and compatibility functions in the core library.\n");
    printf("Usage: qt3to4 [options] <Infile>, [Infile], ...\n");
    printf("\n");
    printf("Infile can be a source file or a project file.\n");
    printf("If you specify a project file, ending with .pro or .pri,\n");
    printf("qt3to4 will port all files specified in that project.\n");
    printf("\n");
    printf("Options:\n");

    // Find the length of the longest argument.
    int argumentMaxLenght = 0;
    foreach (const Option option, optionList) {
        if (option.argument.count() > argumentMaxLenght)
            argumentMaxLenght = option.argument.count();
    }

    // Print the options, pad with spaces between the argument and description where needed.
    const int extraSpaces = 5;
    foreach (const Option option, optionList) {
        printf("%s", option.argument.toLocal8Bit().constData());
        for (int i = 0; i < argumentMaxLenght - option.argument.count() + extraSpaces; ++i)
            printf(" ");
        puts(option.description.toLocal8Bit().constData());
    }

    printf("\n");
    printf("The porting documentation contains more information on how\n");
    printf("to use qt3to4 as well as general porting information.\n");
}

int runPort(int argc, char**argv)
{
    QCoreApplication app(argc, argv);
    applicationDirPath = app.applicationDirPath();
    QString defaultRulesFileName = QLatin1String("q3porting.xml");
    QStringList inFileNames;
    QStringList includeSearchDirectories;
    bool enableCppParsing = true;
    bool useBuildtinQt3Headers = true;
    bool showMissingFilesWarnings = false;
    bool alwaysOverwrite = false;
    int currentArg = 1;

    const Option helpOption(QLatin1String("-h"), QLatin1String("Display this help."));
    const Option rulesFileOption(QLatin1String("-rulesFile"), QLatin1String("Specify the location for the rules file."));
    const Option includeDirectoryOption(QLatin1String("-I"), QLatin1String("Add directory to the list of directories to be searched for header files."));
    const Option disableCppParsingOption(QLatin1String("-disableCppParsing"), QLatin1String("Disable the C++ parsing component."));
    const Option disableBuiltinQt3HeadersOption(QLatin1String("-disableBuiltinQt3Headers"), QLatin1String("Do not use the built-in Qt 3 headers."));
    const Option missingFileWarningsOption(QLatin1String("-missingFileWarnings"), QLatin1String("Warn about files not found while searching for header files."));
    const Option alwaysOverwriteOption(QLatin1String("-alwaysOverwrite"), QLatin1String("Port all files without prompting."));
    const Option strictOption(QLatin1String("-strict"), QLatin1String("Be stricter when selecting which tokens to replace."));

    const OptionList optionList = OptionList() << helpOption << alwaysOverwriteOption << rulesFileOption
                                               << includeDirectoryOption << disableCppParsingOption
                                               << disableBuiltinQt3HeadersOption << missingFileWarningsOption
                                               << strictOption;

    if (argc == 1) {
        usage(optionList);
        return 0;
    }

    // Read arguments.
    while (currentArg < argc) {
        QString argText = QLatin1String(argv[currentArg]);
        if(argText.isEmpty()) {
            continue;
        } else if (argText == QLatin1String("--help") || argText == QLatin1String("/h") || argText == QLatin1String("-help")
            || argText == QLatin1String("-h")  || argText == QLatin1String("-?") || argText == QLatin1String("/?")) {
            usage(optionList);
            return 0;
        } else if (rulesFileOption.checkArgument(argText)) {
            ++currentArg;
            if (currentArg >= argc) {
                printf("You must specify a file name along with %s \n", argText.toLocal8Bit().constData());
                return 0;
            }
            rulesFilePath = QLatin1String(argv[currentArg]);

            if (!QFile::exists(rulesFilePath)) {
                printf("File not found: %s\n", rulesFilePath.toLocal8Bit().constData());
                return 0;
            }
        } else if (includeDirectoryOption.checkArgument(argText)) {
            ++currentArg;
            if (currentArg >= argc) {
                printf("You must specify a directory name along with %s\n",
                     argText.toLocal8Bit().constData());
                return 0;
            }
            includeSearchDirectories += QLatin1String(argv[currentArg]);
        } else if (disableCppParsingOption.checkArgument(argText)) {
            enableCppParsing = false;
        } else if (strictOption.checkArgument(argText)) {
            // Enable strict mode, this is used by the ScopedTokenReplacement constructor. 
            Logger::instance()->globalState.insert(QLatin1String("strictMode"), QLatin1String(""));
        } else if (disableBuiltinQt3HeadersOption.checkArgument(argText)) {
            useBuildtinQt3Headers = false;
        } else if (missingFileWarningsOption.checkArgument(argText)) {
            showMissingFilesWarnings = true;
        } else if (alwaysOverwriteOption.checkArgument(argText)) {
            alwaysOverwrite = true;
            FileWriter::instance()->setOverwriteFiles(FileWriter::AlwaysOverWrite);
        } else if (argText[0]  == QLatin1Char('-')) {
            printf("Unknown option %s\n", argText.toLocal8Bit().constData());
            return 0;
        } else {
            inFileNames.append(argText);
        }
        ++currentArg;
    }

    if (rulesFilePath.isEmpty())
        rulesFilePath = findRulesFile(defaultRulesFileName);

    // Check if we have a rule file.
    if (!QFile::exists(rulesFilePath)) {
        printf("Error: Could not find the %s rule file: ", defaultRulesFileName.toLocal8Bit().constData());
        printf("Please try specifying the location of the file with the %s option \n", 
            rulesFileOption.argument.toLocal8Bit().constData());
        return 0;
    }

    // Check if we have any infiles
    if (inFileNames.isEmpty()) {
        printf("You must specify a file name. \n");
        return 0;
    }

    // Read rule file and create PortingRules instance.
    printf("Using rules file: ");
    puts(QDir::toNativeSeparators(rulesFilePath).toLocal8Bit().constData());
    PortingRules::createInstance(rulesFilePath);


    // Construct a ProjectPorter object add pass it the options.
    QStringList builtinQtheaders;
    if (useBuildtinQt3Headers) {
        builtinQtheaders += QLatin1String(":qt3headers0.resource");
        builtinQtheaders += QLatin1String(":qt3headers1.resource");
        builtinQtheaders += QLatin1String(":qt3headers2.resource");
        builtinQtheaders += QLatin1String(":qt3headers3.resource");
    }

    ProjectPorter porter(QDir::currentPath(), includeSearchDirectories, builtinQtheaders);
    porter.enableCppParsing(enableCppParsing);
    porter.enableMissingFilesWarnings(showMissingFilesWarnings);

    // Determine mode based on file exstesions and port.
    // (The ProjectPorter class is also used for porting single files :)
    foreach (QString inFileName, inFileNames) {
        const QString canonicalFileName = QFileInfo(inFileName).canonicalFilePath();
        if (QFile::exists(canonicalFileName)) {
            if (canonicalFileName.endsWith(QLatin1String(".pro")) || canonicalFileName.endsWith(QLatin1String(".pri")))
                porter.portProject(canonicalFileName);
            else
                porter.portFile(canonicalFileName);
        } else {
            printf("File not found: %s \n", QDir::toNativeSeparators(inFileName).toLocal8Bit().constData());
        }
    }

    // Write log
    if (Logger::instance()->numEntries() > 0) {
        QStringList report = Logger::instance()->fullReport();
        QString logFileName =  QLatin1String("portinglog.txt");
        printf("Writing log to %s \n", logFileName.toLocal8Bit().constData());
        QByteArray logContents;
        QBuffer logBuffer(&logContents);
        logBuffer.open(QIODevice::Text | QIODevice::WriteOnly);
        QTextStream logStream(&logBuffer);
        foreach (QString logLine, report) {
            logStream << logLine << endl;
        }
        logStream << endl;

        QFile logFile(logFileName);
        logFile.open(QIODevice::WriteOnly | QIODevice::Append);
        logFile.write(logContents);
    }
    Logger::deleteInstance();
    PortingRules::deleteInstance();
    return 0;
}

QT_END_NAMESPACE

int main(int argc, char**argv)
{
    return QT_PREPEND_NAMESPACE(runPort)(argc, argv);
}