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Diffstat (limited to 'src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp')
-rw-r--r--src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp151
1 files changed, 78 insertions, 73 deletions
diff --git a/src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp b/src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp
index 839a15e8c3..e61077a552 100644
--- a/src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp
+++ b/src/tools/cplusplus-update-frontend/cplusplus-update-frontend.cpp
@@ -30,6 +30,7 @@
#include <QTextBlock>
#include <QTextCursor>
#include <QTextDocument>
+#include <QBuffer>
#include <cplusplus/Control.h>
#include <cplusplus/Parser.h>
@@ -88,15 +89,51 @@ static const char generatedHeader[] =
static QIODevice::OpenMode openFlags = QIODevice::WriteOnly | QIODevice::Text;
-static void closeAndPrintFilePath(QFile &file)
+static void closeBufferAndWriteIfChanged(QBuffer& textBuffer, const QString& filePath)
{
- if (file.isOpen()) {
- const QString filePath = QFileInfo(file).canonicalFilePath();
- std::cout << QDir::toNativeSeparators(filePath).toLatin1().constData() << std::endl;
+ textBuffer.close();
+
+ std::string filePathForLog = QDir::toNativeSeparators(filePath).toLatin1().toStdString();
+
+ QFile file(filePath);
+ if (! file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+ std::cerr << "Cannot open " << filePathForLog << std::endl;
+ return;
+ }
+ QTextStream fileReader(&file);
+ QBuffer currentTextBuffer;
+ currentTextBuffer.open(QIODevice::WriteOnly | QIODevice::Text);
+ QTextStream currentTextBufferWriter(&currentTextBuffer);
+ while (!fileReader.atEnd()) {
+ currentTextBufferWriter << fileReader.readLine() << endl;
+ }
+ file.close();
+ currentTextBuffer.close();
+
+ if (currentTextBuffer.data() != textBuffer.data()) {
+ if (!file.open(QIODevice::WriteOnly)) {
+ std::cerr << "Cannot open " << filePathForLog << std::endl;
+ return;
+ }
+ file.write(textBuffer.data());
file.close();
+
+ std::cout << "changed: " << filePathForLog << std::endl;
+ } else {
+ std::cout << "not changed: " << filePathForLog << std::endl;
}
}
+static void writeIfChanged(const QString& string, const QString& filePath)
+{
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream output(&buffer);
+ output << string;
+ closeBufferAndWriteIfChanged(buffer, filePath);
+}
+
+
class ASTNodes
{
public:
@@ -209,11 +246,9 @@ public:
{
QFileInfo fileInfo(_cplusplusDir, QLatin1String("ASTVisit.cpp"));
- QFile file(fileInfo.absoluteFilePath());
- if (! file.open(openFlags))
- return;
-
- QTextStream output(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream output(&buffer);
out = &output;
*out << copyrightHeader << generatedHeader <<
@@ -225,7 +260,7 @@ public:
accept(ast);
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileInfo.absoluteFilePath());
}
protected:
@@ -346,11 +381,9 @@ public:
{
QFileInfo fileInfo(_cplusplusDir, QLatin1String("ASTMatch0.cpp"));
- QFile file(fileInfo.absoluteFilePath());
- if (! file.open(openFlags))
- return;
-
- QTextStream output(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream output(&buffer);
out = &output;
*out << copyrightHeader << generatedHeader <<
"\n"
@@ -361,7 +394,7 @@ public:
accept(ast);
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileInfo.absoluteFilePath());
}
protected:
@@ -457,11 +490,9 @@ public:
{
QFileInfo fileInfo(_cplusplusDir, QLatin1String("ASTMatcher.cpp"));
- QFile file(fileInfo.absoluteFilePath());
- if (! file.open(openFlags))
- return;
-
- QTextStream output(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream output(&buffer);
out = &output;
*out << copyrightHeader << endl
@@ -480,7 +511,7 @@ public:
accept(ast);
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileInfo.absoluteFilePath());
}
protected:
@@ -610,11 +641,9 @@ public:
{
QFileInfo fileInfo(_cplusplusDir, QLatin1String("ASTClone.cpp"));
- QFile file(fileInfo.absoluteFilePath());
- if (! file.open(openFlags))
- return;
-
- QTextStream output(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream output(&buffer);
out = &output;
*out << copyrightHeader
@@ -627,7 +656,7 @@ public:
accept(ast);
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileInfo.absoluteFilePath());
}
protected:
@@ -740,19 +769,16 @@ class GenerateDumpers: protected ASTVisitor
QTextStream out;
public:
- GenerateDumpers(QFile *file, TranslationUnit *unit)
- : ASTVisitor(unit), out(file)
+ GenerateDumpers(QBuffer *buffer, TranslationUnit *unit)
+ : ASTVisitor(unit), out(buffer)
{ }
static void go(const QString &fileName, TranslationUnit *unit)
{
- QFile file(fileName);
- if (! file.open(openFlags)) {
- std::cerr << "Cannot open dumpers file." << std::endl;
- return;
- }
+ QBuffer buffer;
+ buffer.open(openFlags);
- GenerateDumpers d(&file, unit);
+ GenerateDumpers d(&buffer, unit);
d.out << copyrightHeader
<< generatedHeader
<< endl;
@@ -760,7 +786,7 @@ public:
d.accept(unit->ast());
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileName);
}
protected:
@@ -1164,11 +1190,7 @@ void generateAST_cpp(const Snapshot &snapshot, const QDir &cplusplusDir)
tc.setPosition(documentEnd);
tc.insertText(newMethods);
- if (file.open(openFlags)) {
- QTextStream out(&file);
- out << cpp_document.toPlainText();
- closeAndPrintFilePath(file);
- }
+ writeIfChanged(cpp_document.toPlainText(), fileName);
}
void generateASTVisitor_H(const Snapshot &, const QDir &cplusplusDir,
@@ -1177,13 +1199,9 @@ void generateASTVisitor_H(const Snapshot &, const QDir &cplusplusDir,
QFileInfo fileASTVisitor_h(cplusplusDir, QLatin1String("ASTVisitor.h"));
Q_ASSERT(fileASTVisitor_h.exists());
- const QString fileName = fileASTVisitor_h.absoluteFilePath();
-
- QFile file(fileName);
- if (! file.open(openFlags))
- return;
-
- QTextStream out(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream out(&buffer);
out << copyrightHeader <<
"\n"
"#pragma once\n"
@@ -1256,7 +1274,7 @@ void generateASTVisitor_H(const Snapshot &, const QDir &cplusplusDir,
"\n"
"} // namespace CPlusPlus\n";
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileASTVisitor_h.absoluteFilePath());
}
void generateASTMatcher_H(const Snapshot &, const QDir &cplusplusDir,
@@ -1265,13 +1283,9 @@ void generateASTMatcher_H(const Snapshot &, const QDir &cplusplusDir,
QFileInfo fileASTMatcher_h(cplusplusDir, QLatin1String("ASTMatcher.h"));
Q_ASSERT(fileASTMatcher_h.exists());
- const QString fileName = fileASTMatcher_h.absoluteFilePath();
-
- QFile file(fileName);
- if (! file.open(openFlags))
- return;
-
- QTextStream out(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream out(&buffer);
out << copyrightHeader <<
"\n"
"#pragma once\n"
@@ -1296,7 +1310,7 @@ void generateASTMatcher_H(const Snapshot &, const QDir &cplusplusDir,
"\n"
"} // namespace CPlusPlus\n";
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileASTMatcher_h.absoluteFilePath());
}
QStringList generateAST_H(const Snapshot &snapshot, const QDir &cplusplusDir, const QString &dumpersFile)
@@ -1369,11 +1383,7 @@ QStringList generateAST_H(const Snapshot &snapshot, const QDir &cplusplusDir, co
replacementCastMethods.value(classAST));
}
- if (file.open(openFlags)) {
- QTextStream out(&file);
- out << document.toPlainText();
- closeAndPrintFilePath(file);
- }
+ writeIfChanged(document.toPlainText(), fileName);
Accept0CG cg(cplusplusDir, AST_h_document->translationUnit());
cg(AST_h_document->translationUnit()->ast());
@@ -1469,11 +1479,7 @@ void generateASTFwd_h(const Snapshot &snapshot, const QDir &cplusplusDir, const
cursors.first().insertText(replacement);
- if (file.open(openFlags)) {
- QTextStream out(&file);
- out << document.toPlainText();
- closeAndPrintFilePath(file);
- }
+ writeIfChanged(document.toPlainText(), fileName);
}
void generateASTPatternBuilder_h(const QDir &cplusplusDir)
@@ -1481,12 +1487,11 @@ void generateASTPatternBuilder_h(const QDir &cplusplusDir)
typedef QPair<QString, QString> StringPair;
QFileInfo fileInfo(cplusplusDir, QLatin1String("ASTPatternBuilder.h"));
- QFile file(fileInfo.absoluteFilePath());
- if (! file.open(openFlags))
- return;
Overview oo;
- QTextStream out(&file);
+ QBuffer buffer;
+ buffer.open(openFlags);
+ QTextStream out(&buffer);
out
<< copyrightHeader
@@ -1600,7 +1605,7 @@ void generateASTPatternBuilder_h(const QDir &cplusplusDir)
<< endl
<< "} // end of namespace CPlusPlus" << endl;
- closeAndPrintFilePath(file);
+ closeBufferAndWriteIfChanged(buffer, fileInfo.absoluteFilePath());
}
void printUsage()
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