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| ** This file is part of the QtCore module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #include "qplatformdefs.h" |
| #include "qfilesystemiterator_p.h" |
| |
| #if QT_CONFIG(textcodec) |
| # include <qtextcodec.h> |
| # include <private/qutfcodec_p.h> |
| #endif |
| |
| #ifndef QT_NO_FILESYSTEMITERATOR |
| |
| #include <memory> |
| |
| #include <stdlib.h> |
| #include <errno.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| static bool checkNameDecodable(const char *d_name, qsizetype len) |
| { |
| // This function is called in a loop from advance() below, but the loop is |
| // usually run only once. |
| |
| #if QT_CONFIG(textcodec) |
| // We identify the codecs by their RFC 2978 MIBenum values. In this |
| // function: |
| // 3 US-ASCII (ANSI X3.4-1986) |
| // 4 Latin1 (ISO-8859-1) |
| // 106 UTF-8 |
| QTextCodec *codec = QTextCodec::codecForLocale(); |
| # ifdef QT_LOCALE_IS_UTF8 |
| int mibEnum = 106; |
| # else |
| int mibEnum = 4; // Latin 1 |
| if (codec) |
| mibEnum = codec->mibEnum(); |
| # endif |
| if (Q_LIKELY(mibEnum == 106)) // UTF-8 |
| return QUtf8::isValidUtf8(d_name, len).isValidUtf8; |
| if (mibEnum == 3) // US-ASCII |
| return QtPrivate::isAscii(QLatin1String(d_name, len)); |
| if (mibEnum == 4) // Latin 1 |
| return true; |
| |
| // fall back to generic QTextCodec |
| QTextCodec::ConverterState cs(QTextCodec::IgnoreHeader); |
| codec->toUnicode(d_name, len, &cs); |
| return cs.invalidChars == 0 && cs.remainingChars == 0; |
| #else |
| // if we have no text codecs, then QString::fromLocal8Bit is fromLatin1 |
| return true; |
| #endif |
| } |
| |
| QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters, |
| const QStringList &nameFilters, QDirIterator::IteratorFlags flags) |
| : nativePath(entry.nativeFilePath()) |
| , dir(nullptr) |
| , dirEntry(nullptr) |
| , lastError(0) |
| { |
| Q_UNUSED(filters) |
| Q_UNUSED(nameFilters) |
| Q_UNUSED(flags) |
| |
| if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) { |
| lastError = errno; |
| } else { |
| if (!nativePath.endsWith('/')) |
| nativePath.append('/'); |
| } |
| } |
| |
| QFileSystemIterator::~QFileSystemIterator() |
| { |
| if (dir) |
| QT_CLOSEDIR(dir); |
| } |
| |
| bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData) |
| { |
| if (!dir) |
| return false; |
| |
| for (;;) { |
| dirEntry = QT_READDIR(dir); |
| |
| if (dirEntry) { |
| qsizetype len = strlen(dirEntry->d_name); |
| if (checkNameDecodable(dirEntry->d_name, len)) { |
| fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath()); |
| metaData.fillFromDirEnt(*dirEntry); |
| return true; |
| } |
| } else { |
| break; |
| } |
| } |
| |
| lastError = errno; |
| return false; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_FILESYSTEMITERATOR |