Merge pull request #58 from Heshdude/creating-installer-generator

Creating installer generator

Author: agentmilindu

.github/workflows/dockerimage.yml

@@ -1,3 +1,4 @@
+
 name: Run tests
 
 on:
@@ -18,4 +19,4 @@ jobs:
     - uses: actions/checkout@v2
     - uses: technote-space/get-diff-action@v1
     - name: Get the list of modified files only
-      run: docker build -t shellspec . && docker run -v $PWD:/app shellspec bash -c "cd /app && ./test.sh ${{ env.GIT_DIFF }}"
+      run: pip install toml && python generate.py ${{ env.GIT_DIFF }} && docker build -t shellspec . && docker run -v $PWD:/app shellspec bash -c "cd /app && ./test.sh ${{ env.GIT_DIFF }}"

generate.py

@@ -0,0 +1,75 @@
+import toml
+import sys
+import os
+import logging
+import errno
+
+methods = {
+   "apt": "$APT_GET",
+   "yum": "$YUM",
+   "dnf": "$DNF",
+   "apk": "$APK",
+   "pacman": "$PACMAN",
+   "git": "$GIT"
+}
+
+def get_method_case(method):
+   if method in methods:
+      return "[ ! -z "+methods[method]+"_CMD ]; then\n"
+   else:
+      logging.error('Unpupported method in the TOML file, method: '+method)
+      exit(1)
+
+def generate(path):
+
+   installer_toml_path = path+"/installer.toml"
+   installer_sh_path = path+"/installer.sh"
+
+   installer_toml = open(installer_toml_path, "r")
+   parsed_toml = toml.loads(installer_toml.read())
+   try:
+    with open(installer_sh_path, "w") as installer_sh:
+
+      installer_sh.write("""#!/bin/sh
+      
+YUM_CMD=$(which yum) # yum package manager for RHEL & CentOS
+DNF_CMD=$(which dnf) # dnf package manager for new RHEL & CentOS
+APT_GET_CMD=$(which apt-get) # apt package manager for Ubuntu & other Debian based distributions
+PACMAN_CMD=$(which pacman) # pacman package manager for ArchLinux
+APK_CMD=$(which apk) # apk package manager for Alpine
+GIT_CMD=$(which git) # to build from source pulling from git
+
+""")
+
+      seperator = "if"
+
+      for section in parsed_toml:
+         lines = parsed_toml[section]['sh']
+         installer_sh.write(seperator+" "+get_method_case(section))
+         for line in lines.split("\n"):
+            installer_sh.write("   "+line+"\n")
+         seperator = "elif"
+
+      installer_sh.write("""
+else
+   echo "Couldn't install package"
+   exit 1;
+fi
+      """.strip())
+
+      installer_sh.close()
+
+   except IOError as x:
+      if x.errno == errno.EACCES:
+         logging.error('No enough permissions to write to '+installer_sh_path)
+         exit(1)
+      else:
+         logging.error('Something went wrong when trying to write to '+installer_sh_path)
+         exit(1)
+
+for path in sys.argv[1:]:
+   if os.path.exists(path+'/installer.toml'):
+         logging.info('Generating installer.sh for '+path)
+         generate(path)
+   else:
+         logging.warn('Could not find an installer.toml in '+path)

installers/hello/installer.toml

@@ -0,0 +1,18 @@
+[apt]
+sh = """
+echo "Installing hello"
+echo "Installed hello"
+"""
+
+[yum]
+sh = """
+echo "Installing hello"
+echo "Installed hello"
+"""
+
+
+[apk]
+sh = """
+echo "Installing hello"
+echo "Installed hello"
+"""