added python script

README.md

@@ -2,3 +2,40 @@ pac-ls
======
Python script to list the installed packages on your ArchLinux installation
Permissions
===========
```
chmod +x pac-ls
```
Executing
=========
To execute the program you may use the following option arguments:
 - **-xn**: Exclude native packages
 - **-xf**: Exclude foreign packages
 - **-xv**: Exclude versions
Example:
```
./pac-ls -xn
alsi 0.4.5-1 (foreign)
android-sdk r22.3-1 (foreign)
android-sdk-build-tools r19-1 (foreign)
android-sdk-platform-tools r19-1 (foreign)
android-studio 0.3.6-1 (foreign)
btsco 0.5-2 (foreign)
btsync 1.2.73-2 (foreign)
chromium-pepper-flash-stable 2:11.9.900.152-2 (foreign)
google-chrome 31.0.1650.63-1 (foreign)
google-talkplugin 4.9.1.0-1 (foreign)
jdk 7.45-1 (foreign)
lib32-llvm-amdgpu-lib-snapshot 20130403-2 (foreign)
llvm-amdgpu-lib-snapshot 20130403-3 (foreign)
pulseaudio-git v4.0.301.g12b7a60-1 (foreign)
sublime-text-dev 3.3047-1 (foreign)
virtualbox-ext-oracle 4.3.2-1 (foreign)
```

pac-ls

@@ -0,0 +1,91 @@
#!/usr/bin/python3
import sys
import subprocess
def runCommand(command):
    """
    Executes a command on the local operating system.
    """
    proc = subprocess.Popen(
        command, 
        stdout = subprocess.PIPE, 
        stderr = subprocess.STDOUT)
    return [x.decode("utf-8").strip() for x in iter(proc.stdout.readline, b'')]
def packageInfo(packages):
    """
    Rips the package name and version apart and places them within a dictionary.
    """
    info = {}
    for package in packages:
        name, version= package.split(' ', 2)
    
        if name:
            info[name] = version
    return info
def printPackages(includeNative = True, includeForeign = True, includeVersion = True):
    """
    Print both the native and foreign packages.
    """
    native = []
    foreign = []
    if includeForeign:
        foreign = runCommand(["pacman", "-Qm"])
    if includeNative:
        native = runCommand(["pacman", "-Qn"])
    # Combine all found packages.
    combined = native + foreign
    # Sort and output the package information.
    for name, version in sorted(packageInfo(combined).items()):
        output = "\033[1m\033[60m{0}".format(name)
        if includeVersion:
            output += " \033[92m{0}".format(version)
        output += "\033[0m"
        if "{0} {1}".format(name, version) in foreign:
            output += " \033[91m(foreign)\033[0m"
        print(output)
def printHelp():
    print("usage: paclist [-xn] [-xf] [-xv]")
    print("List the installed packages on your ArchLinux installation.")
    print()
    print("Optional arguments")
    print("{0:>4}: {1}".format("-xn", "Exclude native packages"))
    print("{0:>4}: {1}".format("-xf", "Exclude foreign packages"))
    print("{0:>4}: {1}".format("-xv", "Exclude versions"))
if __name__ == "__main__":
    args = sys.argv[1:]
    includeNative = True
    includeForeign = True
    includeVersion = True
    if args:
        for arg in args:
            arg = arg.lower()
            if arg == "-xn":
                includeNative = False
            elif arg == "-xf":
                includeForeign = False
            elif arg == "-xv":
                includeVersion = False
            else:
                printHelp()
                sys.exit()
    printPackages(includeNative, includeForeign, includeVersion)