Create a pip package for pipe_io_server

pipe_io_server/clients/c_cpp/example.c

@@ -0,0 +1,29 @@
+ #include "pipe_io.h"
+
+
+void run2() {
+    pipe_io pipeio = pipeio_new_io("in", "out");
+    const char* line;
+    while ((line = pipeio_recv_msg(&pipeio.reader))) {
+        pipeio_send_msg(&pipeio.writer, line);
+    }
+    pipeio_close_io(&pipeio);
+}
+
+void msg_handler(const char* msg, void* ctx) {
+    pipe_writer* writer = (pipe_writer*)(ctx);
+    pipeio_send_msg(writer, msg);
+}
+
+void run1() {
+    pipe_io pipeio = pipeio_new_io("in", "out");
+    pipeio_set_msg_handler(&pipeio.reader, &msg_handler, &pipeio.writer);
+    pipeio_run(&pipeio.reader);
+    pipeio_close_io(&pipeio);
+}
+
+int main() {
+    run1();  // or run2();
+    // note that run1 and run2 do the same thing
+    // and you can use whichever API you prefer
+}

pipe_io_server/clients/c_cpp/example.cpp

@@ -0,0 +1,13 @@
+#include <iostream>
+#include <string>
+#include <fstream>
+#include "pipe_io.hpp"
+
+
+int main() {
+    PipeIO pipe_io("in", "out");
+    pipe_io.reader.set_message_handler(
+        [&pipe_io](std::string msg){pipe_io.writer.send_message(msg);}
+    );
+    pipe_io.reader.run();
+}

pipe_io_server/clients/c_cpp/pipe_io.h

@@ -0,0 +1,147 @@
+#pragma once
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+
+
+typedef struct pipe_reader {
+    FILE* stream;
+    char* line_buf;
+    size_t buf_size;
+    void (*msg_handler)(const char*, void*);
+    void* handler_ctx;
+} pipe_reader;
+
+static void null_handler(const char* msg, void* ctx) {}
+
+pipe_reader pipeio_new_reader(const char* pipe_path) {
+    pipe_reader preader;
+    preader.stream = fopen(pipe_path, "r");
+    preader.line_buf = NULL;
+    preader.buf_size = 0;
+    preader.msg_handler = &null_handler;
+    return preader;
+}
+
+bool pipeio_check_reader(const pipe_reader* preader) {
+    if (!preader || preader->stream == NULL) {
+        return false;
+    }
+    return true;
+}
+
+const char* pipeio_recv_msg(pipe_reader* preader) {
+    if (!pipeio_check_reader(preader)) {
+        return NULL;
+    }
+    ssize_t read = getline(&preader->line_buf, &preader->buf_size, preader->stream);
+    if (read > 0) {
+        preader->line_buf[read - 1] = '\0';
+        return preader->line_buf;
+    }
+    return NULL;
+}
+
+void pipeio_set_msg_handler(pipe_reader* preader, void (*msg_handler)(const char*, void*), void* handler_ctx) {
+    if (msg_handler != NULL && handler_ctx != NULL) {
+        preader->msg_handler = msg_handler;
+        preader->handler_ctx = handler_ctx;
+    }
+}
+
+void pipeio_run(pipe_reader* preader) {
+    const char* line;
+    while ((line = pipeio_recv_msg(preader))) {
+        (*preader->msg_handler)(line, preader->handler_ctx);
+    }
+}
+
+void pipeio_close_reader(pipe_reader* preader) {
+    if (!pipeio_check_reader(preader)) {
+        return;
+    }
+    fclose(preader->stream);
+    preader->stream = NULL;
+    if (preader->line_buf) {
+        free(preader->line_buf);
+        preader->line_buf = NULL;
+    }
+}
+
+
+typedef struct pipe_writer {
+    FILE* stream;
+} pipe_writer;
+
+pipe_writer pipeio_new_writer(const char* pipe_path) {
+    pipe_writer pwriter;
+    pwriter.stream = fopen(pipe_path, "w");
+    return pwriter;
+}
+
+bool pipeio_check_writer(const pipe_writer* pwriter) {
+    if (!pwriter || pwriter->stream == NULL) {
+        return false;
+    }
+    return true;
+}
+
+bool pipeio_send_msg(pipe_writer* pwriter, const char* msg) {
+    if (!pipeio_check_writer(pwriter)) {
+        return false;
+    }
+    fprintf(pwriter->stream, "%s\n", msg);
+    fflush(pwriter->stream);
+    return true;
+}
+
+void pipeio_close_writer(pipe_writer* pwriter) {
+    if (!pipeio_check_writer(pwriter)) {
+        return;
+    }
+    fclose(pwriter->stream);
+    pwriter->stream = NULL;
+}
+
+
+typedef struct pipe_io {
+    pipe_reader reader;
+    pipe_writer writer;
+} pipe_io;
+
+pipe_io pipeio_new_io(const char* in_pipe_path, const char* out_pipe_path) {
+    pipe_io pipeio;
+    pipeio.reader = pipeio_new_reader(in_pipe_path);
+    pipeio.writer = pipeio_new_writer(out_pipe_path);
+    return pipeio;
+}
+
+bool pipeio_check_io(const pipe_io* pipeio) {
+    if (!pipeio) {
+        return false;
+    }
+    return (pipeio_check_reader(&pipeio->reader) && pipeio_check_writer(&pipeio->writer));
+}
+
+void pipeio_close_io(pipe_io* pipeio) {
+    if (!pipeio_check_io(pipeio)) {
+        return;
+    }
+    pipeio_close_reader(&pipeio->reader);
+    pipeio_close_writer(&pipeio->writer);
+}
+
+// const char* recv_msg_pipe_io(pipe_io* pipeio) {
+//     if (!check_pipe_io(pipeio)) {
+//         return NULL;
+//     }
+//     return recv_msg_pipe_reader(&pipeio->preader);
+// }
+
+// bool send_msg_pipe_io(pipe_io* pipeio, const char* msg) {
+//     if (!check_pipe_io(pipeio)) {
+//         return false;
+//     }
+//     return send_msg_pipe_writer(&pipeio->pwriter, msg);
+// }

pipe_io_server/clients/c_cpp/pipe_io.hpp

@@ -0,0 +1,79 @@
+extern "C" {
+#include "pipe_io.h"
+}
+#include <string>
+#include <iostream>
+#include <functional>
+
+
+class PipeReader {
+public:
+    PipeReader(const std::string& pipe_path)
+    :preader(pipeio_new_reader(pipe_path.c_str())) {}
+
+    virtual ~PipeReader() {
+        pipeio_close_reader(&this->preader);
+    }
+
+    PipeReader(PipeReader&) = delete;
+    PipeReader(PipeReader&&) = delete;
+    PipeReader& operator=(const PipeReader&) = delete;
+    PipeReader& operator=(const PipeReader&&) = delete;
+
+    void set_message_handler(std::function<void(std::string)> message_handler) {
+        this->message_handler = message_handler;
+    }
+
+    void run() {
+        while (const char* linebuf = this->recv_message()) {
+            std::string msg(linebuf);
+            this->message_handler(msg);
+        }
+    }
+
+    const char* recv_message() {
+        return pipeio_recv_msg(&this->preader);
+    }
+
+private:
+    pipe_reader preader;
+    std::function<void(std::string)> message_handler = [](std::string){};
+};
+
+
+class PipeWriter {
+public:
+    PipeWriter(const std::string& pipe_path)
+    :pwriter(pipeio_new_writer(pipe_path.c_str())) {}
+
+    virtual ~PipeWriter() {
+        pipeio_close_writer(&this->pwriter);
+    }
+
+    PipeWriter(PipeReader&) = delete;
+    PipeWriter(PipeReader&&) = delete;
+    PipeWriter& operator=(const PipeReader&) = delete;
+    PipeWriter& operator=(const PipeReader&&) = delete;
+
+    void send_message(std::string msg) {
+        pipeio_send_msg(&this->pwriter, msg.c_str());
+    }
+
+private:
+    pipe_writer pwriter;
+};
+
+
+class PipeIO {
+public:
+    PipeReader reader;
+    PipeWriter writer;
+
+    PipeIO(const std::string& in_pipe_path, const std::string& out_pipe_path)
+    :reader(in_pipe_path), writer(out_pipe_path) {}
+
+    PipeIO(PipeReader&) = delete;
+    PipeIO(PipeReader&&) = delete;
+    PipeIO& operator=(const PipeReader&) = delete;
+    PipeIO& operator=(const PipeReader&&) = delete;
+};

pipe_io_server/clients/csharp/Example.cs

@@ -0,0 +1,14 @@
+using System;
+using Pipe.IO;
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        using (var t = new PipeIO("in", "out"))
+        {
+            t.Reader.OnMessage += (String msg) => t.Writer.SendMessage(msg);
+            t.Reader.Run();
+        }
+    }
+}

pipe_io_server/clients/csharp/PipeIO.cs

@@ -0,0 +1,83 @@
+using System;
+using System.IO;
+
+
+namespace Pipe.IO
+{
+    public class PipeReader : IDisposable
+    {
+        public delegate void MessageHandler(String msg);
+        public event MessageHandler OnMessage;
+        private StreamReader pipe;
+
+        public PipeReader(String pipe_path)
+        {
+            var fileStream = File.OpenRead(pipe_path);
+            this.pipe = new StreamReader(fileStream);
+        }
+
+        public void Dispose()
+        {
+            this.pipe.Close();
+        }
+
+        public void Run()
+        {
+            String msg;
+            while ((msg = this.RecvMessage()) != null)
+            {
+                if (this.OnMessage != null)
+                {
+                    this.OnMessage(msg);
+                }
+            }
+        }
+
+        public String RecvMessage()
+        {
+            return this.pipe.ReadLine();
+        }
+    }
+
+
+    public class PipeWriter : IDisposable
+    {
+        private StreamWriter pipe;
+
+        public PipeWriter(String pipe)
+        {
+            var fileStream = File.OpenWrite(pipe);
+            this.pipe = new StreamWriter(fileStream);
+        }
+
+        public void Dispose()
+        {
+            this.pipe.Close();
+        }
+
+        public void SendMessage(String msg)
+        {
+            this.pipe.WriteLine(msg);
+            this.pipe.Flush();
+        }
+    }
+
+
+    public class PipeIO : IDisposable
+    {
+        public PipeReader Reader;
+        public PipeWriter Writer;
+
+        public PipeIO(String in_pipe_path, String out_pipe_path)
+        {
+            this.Reader = new PipeReader(in_pipe_path);
+            this.Writer = new PipeWriter(out_pipe_path);
+        }
+
+        public void Dispose()
+        {
+            this.Reader.Dispose();
+            this.Writer.Dispose();
+        }
+    }
+}

pipe_io_server/clients/go/example.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"log"
+	"./pipeio"
+)
+
+
+func main() {
+	pipeio, err := pipeio.NewPipeIO("in", "out")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer pipeio.Close()
+
+	pipeio.Reader.SetMessageHandler(func(msg []byte) {
+		pipeio.Writer.SendMessage(msg)
+	})
+	pipeio.Reader.Run()
+}

pipe_io_server/clients/go/pipeio/pipeio.go

@@ -0,0 +1,116 @@
+package pipeio
+
+import (
+	"os"
+	"io"
+	"bufio"
+	"errors"
+)
+
+const defaultBufSize = 65536
+
+
+type pipeReader struct {
+	pipe *os.File
+	scanner *bufio.Scanner
+	messageHandler messageHandlerFunc
+}
+
+type messageHandlerFunc func([]byte)
+
+func NewPipeReader(pipePath string) (*pipeReader, error) {
+	pipe, err := os.Open(pipePath)
+	scanner := bufio.NewScanner(pipe)
+	scanner.Split(bufio.ScanLines)
+	if err != nil {
+		return nil, err
+	}
+	scanner.Buffer(make([]byte, defaultBufSize), defaultBufSize)
+	return &pipeReader{
+		pipe: pipe,
+		scanner: scanner,
+		messageHandler: func([]byte){},
+	}, nil
+}
+
+func (preader *pipeReader) Close() {
+	preader.pipe.Close()
+}
+
+func (preader *pipeReader) SetMessageHandler(fun messageHandlerFunc) {
+	preader.messageHandler = fun
+}
+
+func (preader *pipeReader) Run() {
+	for {
+		msg := preader.RecvMessage()
+		if msg == nil {
+			break
+		}
+		preader.messageHandler(msg)
+	}
+}
+
+func (preader *pipeReader) RecvMessage() []byte {
+	if preader.scanner.Scan() {
+		return preader.scanner.Bytes()
+	}
+	if err := preader.scanner.Err(); err != nil && err != io.EOF {
+		if err == bufio.ErrTooLong {
+			err = errors.New("pipeReader buffer too small!")
+		}
+		panic(err)
+	}
+	return nil
+}
+
+func (preader *pipeReader) BufSize(size int) {
+	preader.scanner.Buffer(make([]byte, defaultBufSize), size)
+}
+
+
+type pipeWriter struct {
+	pipe *os.File
+}
+
+func NewPipeWriter(pipePath string) (*pipeWriter, error) {
+	pipe, err := os.OpenFile(pipePath, os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, err
+	}
+	return &pipeWriter{pipe: pipe}, nil
+}
+
+func (pwriter *pipeWriter) Close() {
+	pwriter.pipe.Close()
+}
+
+func (pwriter *pipeWriter) SendMessage(msg []byte) {
+	pwriter.pipe.Write(append(msg, '\n'))
+}
+
+
+type pipeIO struct {
+	Reader pipeReader
+	Writer pipeWriter
+}
+
+func NewPipeIO(inPipePath, outPipePath string) (*pipeIO, error) {
+	reader, err := NewPipeReader(inPipePath)
+	if err != nil {
+		return nil, err
+	}
+	writer, err := NewPipeWriter(outPipePath)
+	if err != nil {
+		return nil, err
+	}
+	return &pipeIO{
+		Reader: *reader,
+		Writer: *writer,
+	}, nil
+}
+
+func (pipeio *pipeIO) Close() {
+	pipeio.Reader.Close()
+	pipeio.Writer.Close()
+}

pipe_io_server/clients/java/Example.java

@@ -0,0 +1,13 @@
+public class Example {
+    public static void main(String[] args) {
+        try (PipeIO pipeio = new PipeIO("in", "out")) {
+            pipeio.reader.setMessageHandler(new MessageHandler(){
+                @Override
+                public void call(String msg) {
+                    pipeio.writer.sendMessage(msg);
+                }
+            });
+            pipeio.reader.run();
+        }
+    }
+}

pipe_io_server/clients/java/MessageHandler.java

@@ -0,0 +1,3 @@
+public interface MessageHandler {
+    public void call(String msg);
+}

pipe_io_server/clients/java/PipeIO.java

@@ -0,0 +1,17 @@
+import java.io.IOException;
+
+
+public class PipeIO implements AutoCloseable {
+    public PipeReader reader;
+    public PipeWriter writer;
+
+    public PipeIO(String in_pipe_path, String out_pipe_path) {
+        this.reader = new PipeReader(in_pipe_path);
+        this.writer = new PipeWriter(out_pipe_path);
+    }
+
+    public void close() {
+        this.reader.close();
+        this.writer.close();
+    }
+}

pipe_io_server/clients/java/PipeReader.java

@@ -0,0 +1,50 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.lang.AutoCloseable;
+
+
+public class PipeReader implements AutoCloseable {
+    private BufferedReader pipe;
+    private MessageHandler messageHandler;
+
+    public PipeReader(String pipe_path) {
+        try {
+            this.pipe = new BufferedReader(new FileReader(pipe_path));
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+        this.messageHandler = new MessageHandler(){
+            @Override
+            public void call(String msg) {}
+        };
+    }
+
+    public void close() {
+        try {
+            this.pipe.close();
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public void setMessageHandler(MessageHandler handler) {
+        this.messageHandler = handler;
+    }
+
+    public void run() {
+        String msg;
+        while ((msg = this.recvMessage()) != null) {
+            this.messageHandler.call(msg);
+        }
+    }
+
+    public String recvMessage() {
+        try {
+            return this.pipe.readLine();
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+}

pipe_io_server/clients/java/PipeWriter.java

@@ -0,0 +1,35 @@
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.lang.AutoCloseable;
+
+
+public class PipeWriter implements AutoCloseable {
+    private BufferedWriter pipe;
+
+    public PipeWriter(String pipe_path) {
+        try {
+            this.pipe = new BufferedWriter(new FileWriter(pipe_path));
+        } catch(IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public void close() {
+        try {
+            this.pipe.close();
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public void sendMessage(String msg) {
+        try {
+            this.pipe.write(msg + "\n");
+            this.pipe.flush();
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+}

pipe_io_server/clients/python/example.py

@@ -0,0 +1,7 @@
+from pipe_io import PipeIO
+
+
+if __name__ == '__main__':
+    with PipeIO('in', 'out') as pipeio:
+        pipeio.reader.message_handler = pipeio.writer.send_message
+        pipeio.reader.run()

pipe_io_server/clients/python/pipe_io.py

@@ -0,0 +1,69 @@
+from typing import Callable
+
+
+class PipeReader:
+    def __init__(self, pipe_path):
+        self._pipe = open(pipe_path, 'rb')
+        self._message_handler = lambda msg: None
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type_, value, traceback):
+        self.close()
+
+    def close(self):
+        self._pipe.close()
+
+    @property
+    def message_handler(self):
+        return self._message_handler
+
+    @message_handler.setter
+    def message_handler(self, value):
+        if not isinstance(value, Callable):
+            raise ValueError("message_handler must be callable!")
+        self._message_handler = value
+
+    def run(self):
+        msg = self.recv_message()
+        while msg:
+            self._message_handler(msg)
+            msg = self.recv_message()
+
+    def recv_message(self):
+        return self._pipe.readline()[:-1]
+
+
+class PipeWriter:
+    def __init__(self, pipe_path):
+        self._pipe = open(pipe_path, 'wb')
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type_, value, traceback):
+        self.close()
+
+    def close(self):
+        self._pipe.close()
+
+    def send_message(self, message):
+        self._pipe.write(message + b'\n')
+        self._pipe.flush()
+
+
+class PipeIO:
+    def __init__(self, in_pipe_path, out_pipe_path):
+        self.reader = PipeReader(in_pipe_path)
+        self.writer = PipeWriter(out_pipe_path)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type_, value, traceback):
+        self.close()
+
+    def close(self):
+        self.reader.close()
+        self.writer.close()