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io/fileview: support zero-sized files (/proc)

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This commit is contained in:
outfoxxed 2024-11-14 17:54:16 -08:00
parent 0dd19d4a18
commit 60dfa67ec7
Signed by: outfoxxed
GPG key ID: 4C88A185FB89301E
1 changed files with 27 additions and 11 deletions
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38
src/io/fileview.cpp
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@ -1,4 +1,5 @@
#include "fileview.hpp"
#include <array>
#include <utility>
#include <qfileinfo.h>
@ -68,22 +69,37 @@ void FileViewReader::read(FileViewState& state, bool doStringConversion) {
}
auto& data = state.data;
data = QByteArray(file.size(), Qt::Uninitialized);
if (file.size() != 0) {
data = QByteArray(file.size(), Qt::Uninitialized);
qint64 i = 0;
qint64 i = 0;
while (true) {
auto r = file.read(data.data() + i, data.length() - i); // NOLINT
while (true) {
auto r = file.read(data.data() + i, data.length() - i); // NOLINT
if (r == -1) {
qCCritical(logFileView) << "Failed to read" << state.path;
goto error;
} else if (r == 0) {
data.resize(i);
break;
}
if (r == -1) {
qCCritical(logFileView) << "Failed to read" << state.path;
goto error;
} else if (r == 0) {
data.resize(i);
break;
i += r;
}
} else {
auto buf = std::array<char, 4096>();
i += r;
while (true) {
auto r = file.read(buf.data(), buf.size()); // NOLINT
if (r == -1) {
qCCritical(logFileView) << "Failed to read" << state.path;
goto error;
} else {
data.append(buf.data(), r);
if (r == 0) break;
}
}
}
if (doStringConversion) {