chore: add version flag

README.md

@@ -8,7 +8,7 @@ from a file, standard input, or command-line arguments.
 ## Usage
 
 ```sh
-treelike [OPTIONS] [PATH]
+treelike [OPTIONS] [TREE-STRUCTURE]
 ```
 
 Prints a tree-like representation of the input.
@@ -16,6 +16,7 @@ Prints a tree-like representation of the input.
 ### Options
 
 - `-h, --help`: Show help message and exit.
+-  `-V, --version`: Show the version number and exit.
 - `-f, --file FILE`: Read from FILE.
 - `-, --stdin`: Read from stdin.
 - `-c, --charset CHARSET`: Use CHARSET to display characters (utf-8, ascii).
@@ -28,19 +29,25 @@ Prints a tree-like representation of the input.
 ### From Releases
 
 1. Go to the [Releases](https://github.com/chenasraf/treelike/releases) page.
+
 2. Download the appropriate binary for your platform:
-   - **Windows**: `treelike-windows-amd64.exe`
-   - **macOS**: `treelike-darwin-amd64`
-   - **Linux**: `treelike-linux-amd64`
-3. Make the binary executable (if necessary):
+
+   - **Windows**: `treelike-windows-amd64.tar.gz`
+   - **macOS**: `treelike-darwin-amd64.tar.gz`
+   - **Linux**: `treelike-linux-amd64.tar.gz`
+
+3. Extract the tar:
    ```sh
-   chmod +x treelike-darwin-amd64  # For macOS
-   chmod +x treelike-linux-amd64   # For Linux
+   tar -xzf treelike-darwin-amd64.tar.gz  # macOS
+   tar -xzf treelike-linux-amd64.tar.gz  # Linux
    ```
-4. Move the binary to a directory in your PATH:
+4. Make the binary executable (if necessary):
    ```sh
-   mv treelike-darwin-amd64 /usr/local/bin/treelike  # For macOS
-   mv treelike-linux-amd64 /usr/local/bin/treelike   # For Linux
+   chmod +x treelike
+   ```
+5. Move the binary to a directory in your PATH:
+   ```sh
+   mv treelike /usr/local/bin/treelike
    ```
 
 ### From Source

args.go

@@ -1,11 +1,15 @@
 package main
 
 import (
+	"embed"
 	"fmt"
 	"os"
 	"strings"
 )
 
+//go:embed version.txt
+var VERSION embed.FS
+
 // getOpts parses command-line arguments and returns an Options struct populated with the parsed values.
 // It supports various flags to customize the behavior of the program, such as reading from stdin,
 // specifying a file, setting the charset, and more. If an invalid charset is provided, the function
@@ -31,7 +35,18 @@ func getOpts() Options {
 		switch args[0] {
 		case "-h", "--help":
 			{
-				helpText()
+				help := helpText()
+				fmt.Printf("%s", help.String())
+				os.Exit(0)
+			}
+		case "-V", "--version":
+			{
+				version, err := VERSION.ReadFile("version.txt")
+				if err != nil {
+					fmt.Println("Error getting version:", err)
+					os.Exit(0)
+				}
+				fmt.Println(string(version))
 				os.Exit(0)
 			}
 		case "-", "--stdin":

describe.go

@@ -14,11 +14,12 @@ import (
 func helpText() strings.Builder {
 	LE := getLE()
 	var builder strings.Builder
-	builder.WriteString("Usage: treelike [OPTIONS] [PATH]" + LE)
+	builder.WriteString("Usage: treelike [OPTIONS] [TREE-STRUCTURE]" + LE)
 	builder.WriteString("Prints a tree-like representation of the input." + LE)
 	builder.WriteString("" + LE)
 	builder.WriteString("Options:" + LE)
 	builder.WriteString("  -h, --help               Show this help message and exit" + LE)
+	builder.WriteString("  -V, --version            Show the version number and exit" + LE)
 	builder.WriteString("  -f, --file FILE          Read from FILE" + LE)
 	builder.WriteString("   -, --stdin              Read from stdin" + LE)
 	builder.WriteString("  -c, --charset CHARSET    Use CHARSET to display characters (utf-8, ascii)" + LE)