Temporary Files and Directories in AngelScript

Throughout program execution, we often want to create data that isn’t needed after the program exits. Temporary files and directories are useful for this purpose since they don’t pollute the file system over time.

import std.filesystem;
import std.string;
import std.file;

void check(bool success)
{
    if (!success)
    {
        print("An error occurred");
        exit();
    }
}

void main()
{
    // The easiest way to create a temporary file is by using
    // the filesystem.createTempFile function. It creates a file
    // and returns its path. We provide an empty string as the first
    // argument, so it will create the file in the default temporary location.
    string tempFilePath = filesystem.createTempFile("", "sample");
    check(tempFilePath != "");

    // Display the name of the temporary file. The file name starts
    // with the prefix given as the second argument to createTempFile
    // and the rest is chosen automatically to ensure that concurrent
    // calls will always create different file names.
    print("Temp file name: " + tempFilePath);

    // Clean up the file after we're done. The OS is likely to clean up
    // temporary files by itself after some time, but it's good practice
    // to do this explicitly.
    defer(file.remove(tempFilePath));

    // We can write some data to the file.
    array<uint8> data = {1, 2, 3, 4};
    check(file.writeBytes(tempFilePath, data));

    // If we intend to create many temporary files, we may prefer to create
    // a temporary directory. filesystem.createTempDirectory's arguments
    // are similar to createTempFile's, but it returns a directory path.
    string tempDirPath = filesystem.createTempDirectory("", "sampledir");
    check(tempDirPath != "");
    print("Temp dir name: " + tempDirPath);

    defer(filesystem.removeDirectory(tempDirPath));

    // Now we can synthesize temporary file names by prefixing them
    // with our temporary directory.
    string fname = filesystem.joinPath(tempDirPath, "file1");
    array<uint8> fileData = {1, 2};
    check(file.writeBytes(fname, fileData));
}

To run the program, save it as temp_files_and_dirs.as and use the AngelScript interpreter:

$ angelscript temp_files_and_dirs.as
Temp file name: /tmp/sample12345
Temp dir name: /tmp/sampledir67890

Note that the exact output will depend on your operating system and the specific implementation of temporary file/directory creation in AngelScript.

In this AngelScript version:

We use the std.filesystem, std.string, and std.file modules for file and directory operations.
The check function is used for error handling, similar to the original.
We use filesystem.createTempFile and filesystem.createTempDirectory for creating temporary files and directories.
defer is used to ensure cleanup of temporary files and directories.
File writing is done using file.writeBytes.
Path joining is done with filesystem.joinPath.

Keep in mind that AngelScript might not have built-in functions for all these operations, so some of these might need to be implemented or use different library functions depending on the specific AngelScript environment.

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Temporary Files and Directories in AngelScript