v1.4.4

source/core/StarFile.cpp

@@ -0,0 +1,240 @@
+#include "StarFile.hpp"
+#include "StarFormat.hpp"
+
+#include <fstream>
+
+namespace Star {
+
+void File::makeDirectoryRecursive(String const& fileName) {
+  auto parent = dirName(fileName);
+  if (!isDirectory(parent))
+    makeDirectoryRecursive(parent);
+  if (!isDirectory(fileName))
+    makeDirectory(fileName);
+}
+
+void File::removeDirectoryRecursive(String const& fileName) {
+  {
+    String fileInDir;
+    bool isDir;
+
+    for (auto const& p : dirList(fileName)) {
+      std::tie(fileInDir, isDir) = p;
+
+      fileInDir = relativeTo(fileName, fileInDir);
+
+      if (isDir)
+        removeDirectoryRecursive(fileInDir);
+      else
+        remove(fileInDir);
+    }
+  }
+
+  remove(fileName);
+}
+
+void File::copy(String const& source, String const& target) {
+  auto sourceFile = File::open(source, IOMode::Read);
+  auto targetFile = File::open(target, IOMode::ReadWrite);
+
+  targetFile->resize(0);
+
+  char buf[1024];
+  while (!sourceFile->atEnd()) {
+    size_t r = sourceFile->read(buf, 1024);
+    targetFile->writeFull(buf, r);
+  }
+}
+
+FilePtr File::open(const String& filename, IOMode mode) {
+  auto file = make_shared<File>(filename);
+  file->open(mode);
+  return file;
+}
+
+ByteArray File::readFile(String const& filename) {
+  FilePtr file = File::open(filename, IOMode::Read);
+  ByteArray bytes;
+  while (!file->atEnd()) {
+    char buffer[1024];
+    size_t r = file->read(buffer, 1024);
+    bytes.append(buffer, r);
+  }
+
+  return bytes;
+}
+
+String File::readFileString(String const& filename) {
+  FilePtr file = File::open(filename, IOMode::Read);
+  std::string str;
+  while (!file->atEnd()) {
+    char buffer[1024];
+    size_t r = file->read(buffer, 1024);
+    for (size_t i = 0; i < r; ++i)
+      str.push_back(buffer[i]);
+  }
+
+  return str;
+}
+
+StreamOffset File::fileSize(String const& filename) {
+  return File::open(filename, IOMode::Read)->size();
+}
+
+void File::writeFile(char const* data, size_t len, String const& filename) {
+  FilePtr file = File::open(filename, IOMode::Write | IOMode::Truncate);
+  file->writeFull(data, len);
+}
+
+void File::writeFile(ByteArray const& data, String const& filename) {
+  writeFile(data.ptr(), data.size(), filename);
+}
+
+void File::writeFile(String const& data, String const& filename) {
+  writeFile(data.utf8Ptr(), data.utf8Size(), filename);
+}
+
+void File::overwriteFileWithRename(ByteArray const& data, String const& filename, String const& newSuffix) {
+  overwriteFileWithRename(data.ptr(), data.size(), filename, newSuffix);
+}
+
+void File::overwriteFileWithRename(String const& data, String const& filename, String const& newSuffix) {
+  overwriteFileWithRename(data.utf8Ptr(), data.utf8Size(), filename, newSuffix);
+}
+
+void File::backupFileInSequence(String const& targetFile, unsigned maximumBackups, String const& backupExtensionPrefix) {
+  for (unsigned i = maximumBackups; i > 0; --i) {
+    String curExtension = i == 1 ? "" : strf("%s%s", backupExtensionPrefix, i - 1);
+    String nextExtension = strf("%s%s", backupExtensionPrefix, i);
+
+    if (File::isFile(targetFile + curExtension))
+      File::copy(targetFile + curExtension, targetFile + nextExtension);
+  }
+}
+
+File::File()
+  : IODevice(IOMode::Closed) {
+  m_file = 0;
+}
+
+File::File(String filename)
+  : IODevice(IOMode::Closed), m_filename(move(filename)), m_file(0) {}
+
+File::~File() {
+  close();
+}
+
+StreamOffset File::pos() {
+  if (!m_file)
+    throw IOException("pos called on closed File");
+
+  return ftell(m_file);
+}
+
+void File::seek(StreamOffset offset, IOSeek seekMode) {
+  if (!m_file)
+    throw IOException("seek called on closed File");
+
+  fseek(m_file, offset, seekMode);
+}
+
+StreamOffset File::size() {
+  return fsize(m_file);
+}
+
+bool File::atEnd() {
+  if (!m_file)
+    throw IOException("eof called on closed File");
+
+  return ftell(m_file) >= fsize(m_file);
+}
+
+size_t File::read(char* data, size_t len) {
+  if (!m_file)
+    throw IOException("read called on closed File");
+
+  if (!isReadable())
+    throw IOException("read called on non-readable File");
+
+  return fread(m_file, data, len);
+}
+
+size_t File::write(const char* data, size_t len) {
+  if (!m_file)
+    throw IOException("write called on closed File");
+
+  if (!isWritable())
+    throw IOException("write called on non-writable File");
+
+  return fwrite(m_file, data, len);
+}
+
+size_t File::readAbsolute(StreamOffset readPosition, char* data, size_t len) {
+  return pread(m_file, data, len, readPosition);
+}
+
+size_t File::writeAbsolute(StreamOffset writePosition, char const* data, size_t len) {
+  return pwrite(m_file, data, len, writePosition);
+}
+
+String File::fileName() const {
+  return m_filename;
+}
+
+void File::setFilename(String filename) {
+  if (isOpen())
+    throw IOException("Cannot call setFilename while File is open");
+  m_filename = move(filename);
+}
+
+void File::remove() {
+  close();
+  if (m_filename.empty())
+    throw IOException("Cannot remove file, no filename set");
+  remove(m_filename);
+}
+
+void File::resize(StreamOffset s) {
+  bool tempOpen = false;
+  if (!isOpen()) {
+    tempOpen = true;
+    open(mode());
+  }
+
+  File::resize(m_file, s);
+
+  if (tempOpen)
+    close();
+}
+
+void File::sync() {
+  if (!m_file)
+    throw IOException("sync called on closed File");
+
+  fsync(m_file);
+}
+
+void File::open(IOMode m) {
+  close();
+  if (m_filename.empty())
+    throw IOException("Cannot open file, no filename set");
+
+  m_file = fopen(m_filename.utf8Ptr(), m);
+  setMode(m);
+}
+
+void File::close() {
+  if (m_file)
+    fclose(m_file);
+  m_file = 0;
+  setMode(IOMode::Closed);
+}
+
+String File::deviceName() const {
+  if (m_filename.empty())
+    return "<unnamed temp file>";
+  else
+    return m_filename;
+}
+
+}