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Refactored FallbackFontConfig() to use native Qt methods.

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Signed-off-by: Vitaly Zaitsev <vitaly@easycoding.org>
This commit is contained in:
Vitaly Zaitsev 2018-11-15 11:05:59 +01:00 committed by John Preston
parent 00969df06f
commit 31e3a426a6
1 changed files with 19 additions and 25 deletions
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44
Telegram/SourceFiles/platform/linux/specific_linux.cpp
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@ -26,6 +26,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include <pwd.h>
#include <iostream>
#include <QProcess>
#include <QVersionNumber>
#include <qpa/qplatformnativeinterface.h>
@ -46,8 +48,6 @@ bool RunShellCommand(const QByteArray &command) {
void FallbackFontConfig() {
#ifndef TDESKTOP_DISABLE_DESKTOP_FILE_GENERATION
const auto path = cWorkingDir() + "tdata/fc-version-check.txt";
const auto escaped = EscapeShell(QFile::encodeName(path));
const auto custom = cWorkingDir() + "tdata/fc-custom-1.conf";
const auto finish = gsl::finally([&] {
if (QFile(custom).exists()) {
@ -56,37 +56,31 @@ void FallbackFontConfig() {
}
});
const auto command = "fc-list --version > " + escaped + " 2> " + escaped;
if (!RunShellCommand(command)) {
LOG(("App Error: Could not run '%1'").arg(QString::fromLatin1(command)));
return;
} else if (!QFile::exists(path)) {
LOG(("App Error: Could not find fc-list --version output from: ") + path);
QProcess process;
process.setProcessChannelMode(QProcess::MergedChannels);
process.start("fc-list", QStringList() << "--version");
process.waitForFinished();
if (process.exitCode() > 0) {
LOG(("App Error: Could not start fc-list. Process exited with code: %1.").arg(process.exitCode()));
return;
}
QFile output(path);
if (!output.open(QIODevice::ReadOnly)) {
LOG(("App Error: Could not open fc-list --version output from: ") + path);
QString result(process.readAllStandardOutput());
DEBUG_LOG(("Fontconfig version string: ") + result);
QVersionNumber version = QVersionNumber::fromString(result.split("version ").last());
if (version.isNull()) {
LOG(("App Error: Could not get version from fc-list output."));
return;
}
const auto result = QString::fromLatin1(output.readAll());
LOG(("Fontconfig version string: ") + result);
const auto regex = QRegularExpression(
"version\\s+(\\d+)\\.(\\d+)",
QRegularExpression::CaseInsensitiveOption);
const auto match = regex.match(result);
if (!match.hasMatch()) {
LOG(("App Error: Could not read fc-list --version output from: ") + path);
return;
}
const auto major = match.capturedRef(1).toInt();
const auto minor = match.capturedRef(2).toInt();
LOG(("Fontconfig version: %1.%2").arg(major).arg(minor));
if (major <= 2 && (major != 2 || minor <= 12)) {
LOG(("Fontconfig version: %1.").arg(version.toString()));
if (version < QVersionNumber::fromString("2.13")) {
if (qgetenv("TDESKTOP_FORCE_CUSTOM_FONTCONFIG").isEmpty()) {
return;
}
}
QFile(":/fc/fc-custom.conf").copy(custom);
#endif // TDESKTOP_DISABLE_DESKTOP_FILE_GENERATION
}