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Add a TemporaryFile constructor accepting the file extension

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This commit is contained in:
Sergii Ladniuk 2021-12-02 17:58:16 +02:00
parent 4a40edc0c3
commit 63035b2d74
2 changed files with 22 additions and 4 deletions
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13
src/oatpp/core/data/resource/TemporaryFile.cpp
View File

@ -39,26 +39,33 @@ TemporaryFile::FileHandle::~FileHandle() {
}
}
oatpp::String TemporaryFile::constructRandomFilename(const oatpp::String& dir, v_int32 randomWordSizeBytes) {
oatpp::String TemporaryFile::constructRandomFilename(const oatpp::String &dir, v_int32 randomWordSizeBytes, const oatpp::String &extension) {
std::unique_ptr<v_char8[]> buff(new v_char8[randomWordSizeBytes]);
utils::random::Random::randomBytes(buff.get(), randomWordSizeBytes);
data::stream::BufferOutputStream s(randomWordSizeBytes * 2 + 4);
encoding::Hex::encode(&s, buff.get(), randomWordSizeBytes, encoding::Hex::ALPHABET_LOWER);
s << ".tmp";
if (extension->at(0) != '.') {
s << ".";
}
s << extension;
return File::concatDirAndName(dir, s.toString());
}
TemporaryFile::TemporaryFile(const oatpp::String& tmpDirectory, v_int32 randomWordSizeBytes)
: m_handle(std::make_shared<FileHandle>(constructRandomFilename(tmpDirectory, randomWordSizeBytes)))
: m_handle(std::make_shared<FileHandle>(constructRandomFilename(tmpDirectory, randomWordSizeBytes, "tmp")))
{}
TemporaryFile::TemporaryFile(const oatpp::String& tmpDirectory, const oatpp::String& tmpFileName)
: m_handle(std::make_shared<FileHandle>(File::concatDirAndName(tmpDirectory, tmpFileName)))
{}
TemporaryFile::TemporaryFile(const oatpp::String& tmpDirectory, v_int32 randomWordSizeBytes, const oatpp::String& extension)
: m_handle(std::make_shared<FileHandle>(constructRandomFilename(tmpDirectory, randomWordSizeBytes, extension)))
{}
std::shared_ptr<data::stream::OutputStream> TemporaryFile::openOutputStream() {
if(m_handle) {
return std::make_shared<data::stream::FileOutputStream>(m_handle->fileName->c_str(), "wb", m_handle);

13
src/oatpp/core/data/resource/TemporaryFile.hpp
View File

@ -58,7 +58,7 @@ private:
};
private:
static oatpp::String constructRandomFilename(const oatpp::String& dir, v_int32 randomWordSizeBytes);
static oatpp::String constructRandomFilename(const oatpp::String &dir, v_int32 randomWordSizeBytes, const oatpp::String &extension);
private:
std::shared_ptr<FileHandle> m_handle;
public:
@ -86,6 +86,17 @@ public:
*/
TemporaryFile(const oatpp::String& tmpDirectory, const oatpp::String& tmpFileName);
/**
* Constructor. <br>
* Create temporary file with a random name and specified extension in the `tmpDirectory`. <br>
* The actual file will be created only after first write to that file. <br>
* Example of the generated random file name: `f7c6ecd44024ff31.txt`.
* @param tmpDirectory - directory where to create a temporary file.
* @param randomWordSizeBytes - number of random bytes to generate file name.
* @param extension - extension of the temporary file, e.g. txt or .txt
*/
TemporaryFile(const oatpp::String& tmpDirectory, v_int32 randomWordSizeBytes, const oatpp::String& extension);
/**
* Open output stream to a temporary file. <br>
* *Note: stream also captures file-handle. The temporary file won't be deleted until the stream is deleted.*