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50
51
52#include <QtCore/qfile.h>
53#include <QtCore/qtextstream.h>
54#include <QtCore/qstringlist.h>
55#include <QtCore/qscopedpointer.h>
56
57#include <QtCore/QCoreApplication>
58
59#include <QtQml/qjsengine.h>
60
61#include <stdlib.h>
62
63
64class CommandInterface : public QObject
65{
66 Q_OBJECT
67public:
68 Q_INVOKABLE void quit() { m_wantsToQuit = true; }
69 static bool wantsToQuit() { return m_wantsToQuit; }
70private:
71 static bool m_wantsToQuit;
72};
73
74bool CommandInterface::m_wantsToQuit = false;
75
76
77static void interactive(QJSEngine *eng)
78{
79 QTextStream qin(stdin, QFile::ReadOnly);
80 const char *prompt = "qs> ";
81
82 forever {
83 QString line;
84
85 printf(format: "%s", prompt);
86 fflush(stdout);
87
88 line = qin.readLine();
89 if (line.isNull())
90 break;
91
92 if (line.trimmed().isEmpty())
93 continue;
94
95 line += QLatin1Char('\n');
96
97 QJSValue result = eng->evaluate(program: line, fileName: QLatin1String("typein"));
98
99 fprintf(stderr, format: "%s\n", qPrintable(result.toString()));
100
101 if (CommandInterface::wantsToQuit())
102 break;
103 }
104}
105
106int main(int argc, char *argv[])
107{
108 QCoreApplication app(argc, argv);
109 QScopedPointer<QJSEngine> eng(new QJSEngine());
110 {
111 QJSValue globalObject = eng->globalObject();
112 QJSValue interface = eng->newQObject(object: new CommandInterface);
113 globalObject.setProperty(name: "qt", value: interface);
114 }
115
116 if (! *++argv) {
117 interactive(eng: eng.data());
118 return EXIT_SUCCESS;
119 }
120
121 while (const char *arg = *argv++) {
122 QString fileName = QString::fromLocal8Bit(str: arg);
123
124 if (fileName == QLatin1String("-i")) {
125 interactive(eng: eng.data());
126 break;
127 }
128
129 QString contents;
130 int lineNumber = 1;
131
132 if (fileName == QLatin1String("-")) {
133 QTextStream stream(stdin, QFile::ReadOnly);
134 contents = stream.readAll();
135 } else {
136 QFile file(fileName);
137 if (file.open(flags: QFile::ReadOnly)) {
138 QTextStream stream(&file);
139 contents = stream.readAll();
140 file.close();
141
142 // strip off #!/usr/bin/env qjs line
143 if (contents.startsWith(s: "#!")) {
144 contents.remove(i: 0, len: contents.indexOf(s: "\n"));
145 ++lineNumber;
146 }
147 }
148 }
149
150 if (contents.isEmpty())
151 continue;
152
153 QJSValue result = eng->evaluate(program: contents, fileName, lineNumber);
154 if (result.isError()) {
155 fprintf (stderr, format: " %s\n\n", qPrintable(result.toString()));
156 return EXIT_FAILURE;
157 }
158 }
159
160 return EXIT_SUCCESS;
161}
162
163#include <main.moc>
164

source code of qtdeclarative/examples/qml/shell/main.cpp