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FilePath: Return optional bytearray from device hooks

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For differentiating between "error" and "empty file".

Change-Id: I1806bb7386f5e7db28489f9f7e685648bfc20110
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>
This commit is contained in:
Eike Ziller
2022-09-09 14:25:36 +02:00
parent f5c22a42ae
commit e7ddd8a5b7
12 changed files with 67 additions and 35 deletions
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40
src/plugins/remotelinux/linuxdevice.cpp
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@@ -361,7 +361,7 @@ public:
bool setupShell();
bool runInShell(const CommandLine &cmd, const QByteArray &data = {});
QByteArray outputForRunInShell(const CommandLine &cmd);
std::optional<QByteArray> outputForRunInShell(const CommandLine &cmd);
void attachToSharedConnection(SshConnectionHandle *connectionHandle,
const SshParameters &sshParameters);
@@ -814,10 +814,13 @@ public:
}
// Call me with shell mutex locked
QByteArray outputForRunInShell(const CommandLine &cmd)
std::optional<QByteArray> outputForRunInShell(const CommandLine &cmd)
{
QTC_ASSERT(m_shell, return {});
return m_shell->outputForRunInShell(cmd).stdOut;
const DeviceShell::RunResult result = m_shell->outputForRunInShell(cmd);
if (result.exitCode == 0)
return result.stdOut;
return {};
}
void setSshParameters(const SshParameters &sshParameters)
@@ -1104,7 +1107,7 @@ bool LinuxDevicePrivate::runInShell(const CommandLine &cmd, const QByteArray &da
return m_handler->runInShell(cmd, data);
}
QByteArray LinuxDevicePrivate::outputForRunInShell(const CommandLine &cmd)
std::optional<QByteArray> LinuxDevicePrivate::outputForRunInShell(const CommandLine &cmd)
{
QMutexLocker locker(&m_shellMutex);
DEBUG(cmd);
@@ -1237,7 +1240,8 @@ bool LinuxDevice::renameFile(const FilePath &filePath, const FilePath &target) c
QDateTime LinuxDevice::lastModified(const FilePath &filePath) const
{
QTC_ASSERT(handlesFile(filePath), return {});
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%Y", filePath.path()}});
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%Y", filePath.path()}})
.value_or(QByteArray());
const qint64 secs = output.toLongLong();
const QDateTime dt = QDateTime::fromSecsSinceEpoch(secs, Qt::UTC);
return dt;
@@ -1246,7 +1250,8 @@ QDateTime LinuxDevice::lastModified(const FilePath &filePath) const
FilePath LinuxDevice::symLinkTarget(const FilePath &filePath) const
{
QTC_ASSERT(handlesFile(filePath), return {});
const QByteArray output = d->outputForRunInShell({"readlink", {"-n", "-e", filePath.path()}});
const QByteArray output = d->outputForRunInShell({"readlink", {"-n", "-e", filePath.path()}})
.value_or(QByteArray());
const QString out = QString::fromUtf8(output.data(), output.size());
return output.isEmpty() ? FilePath() : filePath.withNewPath(out);
}
@@ -1254,7 +1259,8 @@ FilePath LinuxDevice::symLinkTarget(const FilePath &filePath) const
qint64 LinuxDevice::fileSize(const FilePath &filePath) const
{
QTC_ASSERT(handlesFile(filePath), return -1);
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%s", filePath.path()}});
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%s", filePath.path()}})
.value_or(QByteArray());
return output.toLongLong();
}
@@ -1264,7 +1270,7 @@ qint64 LinuxDevice::bytesAvailable(const FilePath &filePath) const
CommandLine cmd("df", {"-k"});
cmd.addArg(filePath.path());
cmd.addArgs("|tail -n 1 |sed 's/ */ /g'|cut -d ' ' -f 4", CommandLine::Raw);
const QByteArray output = d->outputForRunInShell(cmd);
const QByteArray output = d->outputForRunInShell(cmd).value_or(QByteArray());
bool ok = false;
const qint64 size = output.toLongLong(&ok);
if (ok)
@@ -1275,7 +1281,8 @@ qint64 LinuxDevice::bytesAvailable(const FilePath &filePath) const
QFileDevice::Permissions LinuxDevice::permissions(const FilePath &filePath) const
{
QTC_ASSERT(handlesFile(filePath), return {});
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%a", filePath.path()}});
const QByteArray output = d->outputForRunInShell({"stat", {"-L", "-c", "%a", filePath.path()}})
.value_or(QByteArray());
const uint bits = output.toUInt(nullptr, 8);
QFileDevice::Permissions perm = {};
#define BIT(n, p) if (bits & (1<<n)) perm |= QFileDevice::p
@@ -1305,12 +1312,15 @@ void LinuxDevice::iterateDirectory(const FilePath &filePath,
{
QTC_ASSERT(handlesFile(filePath), return);
// if we do not have find - use ls as fallback
const QByteArray output = d->outputForRunInShell({"ls", {"-1", "-b", "--", filePath.path()}});
const QByteArray output = d->outputForRunInShell({"ls", {"-1", "-b", "--", filePath.path()}})
.value_or(QByteArray());
const QStringList entries = QString::fromUtf8(output).split('\n', Qt::SkipEmptyParts);
FileUtils::iterateLsOutput(filePath, entries, filter, callBack);
}
QByteArray LinuxDevice::fileContents(const FilePath &filePath, qint64 limit, qint64 offset) const
std::optional<QByteArray> LinuxDevice::fileContents(const FilePath &filePath,
qint64 limit,
qint64 offset) const
{
QTC_ASSERT(handlesFile(filePath), return {});
QString args = "if=" + filePath.path() + " status=none";
@@ -1320,8 +1330,12 @@ QByteArray LinuxDevice::fileContents(const FilePath &filePath, qint64 limit, qin
}
CommandLine cmd(FilePath::fromString("dd"), args, CommandLine::Raw);
const QByteArray output = d->outputForRunInShell(cmd);
DEBUG(output << QByteArray::fromHex(output));
const std::optional<QByteArray> output = d->outputForRunInShell(cmd);
if (output) {
DEBUG(*output << QByteArray::fromHex(*output));
} else {
DEBUG("fileContents failed");
}
return output;
}