diff options
| -rw-r--r-- | src/libs/installer/fileutils.cpp | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/src/libs/installer/fileutils.cpp b/src/libs/installer/fileutils.cpp index b46883c5a..5a89073fc 100644 --- a/src/libs/installer/fileutils.cpp +++ b/src/libs/installer/fileutils.cpp @@ -454,21 +454,31 @@ void QInstaller::mkpath(const QString &path) */ QString QInstaller::generateTemporaryFileName(const QString &templ) { - static const QLatin1String staticPart("%1.tmp.XXXXXX"); - - QTemporaryFile f; - if (!templ.isEmpty()) - f.setFileTemplate(QString(staticPart).arg(templ)); - - if (!f.open()) { - if (!templ.isEmpty()) { - throw Error(QCoreApplication::translate("QInstaller", - "Cannot open temporary file for template %1: %2").arg(templ, f.errorString())); - } else { + if (templ.isEmpty()) { + QTemporaryFile f; + if (!f.open()) { throw Error(QCoreApplication::translate("QInstaller", "Cannot open temporary file: %1").arg(f.errorString())); } + return f.fileName(); + } + + static const QString characters = QLatin1String("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"); + QString suffix; + for (int i = 0; i < 5; ++i) + suffix += characters[QRandomGenerator::global()->generate() % characters.length()]; + + const QString tmp = QLatin1String("%1.tmp.%2.%3"); + int count = 1; + while (QFile::exists(tmp.arg(templ, suffix).arg(count))) + ++count; + + QFile f(tmp.arg(templ, suffix).arg(count)); + if (!f.open(QIODevice::WriteOnly)) { + throw Error(QCoreApplication::translate("QInstaller", + "Cannot open temporary file for template %1: %2").arg(templ, f.errorString())); } + f.remove(); return f.fileName(); } |