comparison generator/main.h @ 1:e78566595089

initial import
author mandel
date Mon, 11 May 2009 16:01:50 +0000
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children 0a29ce1ae854
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0:36fb74dc547d 1:e78566595089
1 /****************************************************************************
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5 ** This file is part of Qt Jambi.
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14 * GNU General Public License Usage
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40 ****************************************************************************/
41
42 #ifndef MAIN_H
43 #define MAIN_H
44
45 #include "pp.h"
46
47 #include <QFile>
48 #include <QDir>
49
50 struct Preprocess
51 {
52 static bool preprocess(const QString &sourceFile, const QString &targetFile, const QString &commandLineIncludes = QString())
53 {
54 rpp::pp_environment env;
55 rpp::pp preprocess(env);
56
57 rpp::pp_null_output_iterator null_out;
58
59 const char *ppconfig = ":/trolltech/generator/parser/rpp/pp-qt-configuration";
60
61 QFile file(ppconfig);
62 if (!file.open(QFile::ReadOnly)) {
63 fprintf(stderr, "Preprocessor configuration file not found '%s'\n", ppconfig);
64 return false;
65 }
66
67 QByteArray ba = file.readAll();
68 file.close();
69 preprocess.operator() (ba.constData(), ba.constData() + ba.size(), null_out);
70
71 QStringList includes;
72 includes << QString(".");
73
74 #if defined(Q_OS_WIN32)
75 const char *path_splitter = ";";
76 #else
77 const char *path_splitter = ":";
78 #endif
79 // Environment INCLUDE
80 QString includePath = getenv("INCLUDE");
81 if (!includePath.isEmpty())
82 includes += includePath.split(path_splitter);
83
84 // Includes from the command line
85 if (!commandLineIncludes.isEmpty())
86 includes += commandLineIncludes.split(path_splitter);
87
88 // Include Qt
89 QString qtdir_inc = getenv ("QTDIR_INC");
90 QString qtdir = getenv ("QTDIR");
91 if (qtdir.isEmpty() && qtdir_inc.isEmpty()) {
92 qWarning("QTDIR and(or) QTDIR_INC environment variables not set. This may cause problems with finding the necessary include files.");
93 } else {
94 if (qtdir_inc.isEmpty())
95 qtdir_inc = qtdir + "/include";
96 includes << (qtdir_inc + "/QtXml");
97 includes << (qtdir_inc + "/QtNetwork");
98 includes << (qtdir_inc + "/QtCore");
99 includes << (qtdir_inc + "/QtGui");
100 includes << (qtdir_inc + "/QtOpenGL");
101 includes << qtdir_inc;
102 }
103
104
105 foreach (QString include, includes)
106 preprocess.push_include_path(QDir::convertSeparators(include).toStdString());
107
108 QString currentDir = QDir::current().absolutePath();
109 QFileInfo sourceInfo(sourceFile);
110 QDir::setCurrent(sourceInfo.absolutePath());
111
112 std::string result;
113 result.reserve (20 * 1024); // 20K
114
115 result += "# 1 \"builtins\"\n";
116 result += "# 1 \"";
117 result += sourceFile.toStdString();
118 result += "\"\n";
119
120 preprocess.file (sourceInfo.fileName().toStdString(),
121 rpp::pp_output_iterator<std::string> (result));
122
123 QDir::setCurrent(currentDir);
124
125 QFile f(targetFile);
126 if (!f.open(QIODevice::WriteOnly | QIODevice::Text)) {
127 fprintf(stderr, "Failed to write preprocessed file: %s\n", qPrintable(targetFile));
128 }
129 f.write(result.c_str(), result.length());
130
131 return true;
132 }
133 };
134
135 #endif // MAIN_H