added linux installation script

Author: dragon7307

packaging/linux/script/install.sh

@@ -0,0 +1,131 @@
+#!/bin/sh
+
+# $INSTALLATION_PATH
+# SOURCE
+
+set -e
+
+if [ "$(id -u)" -ne 0 ]; then
+    echo "Installation requires root privileges. Please execute this script as root (sudo)."
+    exit 1
+fi
+
+INSTALLATION_PATH="${INSTALLATION_PATH%/}"
+
+if [ -z "$INSTALLATION_PATH" ]; then
+    INSTALLATION_PATH="/bin"
+fi
+
+determineDistro()
+{
+    . /etc/os-release
+    DISTRO=$ID
+}
+
+determineDistro
+
+if [ -z "$SOURCE" ]; then
+    if [ "$DISTRO" = "alpine" ]; then
+        SOURCE="https://github.com/draconware-dev/LineCount/releases/download/__VERSION__/linecount-__VERSION__-linux-alpine-amd64.tar.xz"
+    else
+        SOURCE="https://github.com/draconware-dev/LineCount/releases/download/__VERSION__/linecount-__VERSION__-linux-amd64.tar.xz"
+    fi
+fi
+
+downloadProgram()
+{
+    if command -v wget >/dev/null 2>&1; then
+        echo "Downloading $fileName..."
+        wget -q --show-progress -O $fileName "$SOURCE"
+        return 0
+    else
+        if command -v curl >/dev/null 2>&1; then
+            curl -o $fileName "$SOURCE"
+            return 0
+        fi
+    fi
+
+    return 1
+}
+
+hasInstalledWebClient=0
+
+installWebClient()
+{
+    case "$DISTRO" in
+        "ubuntu" | "debian")
+                echo "Temporarily installing wget..."
+                apt-get update
+                apt-get install -y wget
+            ;;
+        "centos" | "rhel" | "fedora")
+                echo "Temporarily installing wget..."
+                yum install -y wget
+                dnf install -y wget
+            ;;
+        "arch" | "manjaro")
+                echo "Temporarily installing wget..."
+                pacman -Syu --noconfirm wget 
+            ;;
+        "alpine")
+                echo "Temporarily installing wget..."
+                apk add --no-cache wget
+            ;;
+        *)
+                echo "Failed to install wget. Please install wget or curl manually as they constitute a requirement for the installation process."
+                exit 2
+            ;;
+    esac
+
+    hasInstalledWebClient=1
+}
+
+uninstallWebClient()
+{
+    case "$DISTRO" in
+        "ubuntu" | "debian")
+                echo "Uninstalling wget..."
+                apt-get remove --purge -y wget
+                apt-get autoremove -y
+            ;;
+        "centos" | "rhel" | "fedora")
+                echo "Uninstalling wget..."
+                yum remove -y wget
+                dnf remove -y wget
+            ;;
+        "arch" | "manjaro")
+                echo "Uninstalling wget..."
+                pacman -Rns --noconfirm wget
+            ;;
+        "alpine")
+                echo "Uninstalling wget..."
+                apk del wget
+            ;;
+        *)
+            ;;
+    esac
+}
+
+fileName=$(basename "$SOURCE")
+
+downloadProgram
+
+if [ $? -ne 0 ]; then
+    installWebClient
+    downloadProgram
+fi
+
+if [ $hasInstalledWebClient -ne 0 ]; then
+    uninstallWebClient
+fi
+
+mkdir -p "$INSTALLATION_PATH"
+mkdir -p .linecount
+tar -xf $fileName -C ".linecount"
+cp .linecount/linecount "$INSTALLATION_PATH/linecount"
+chmod +x "$INSTALLATION_PATH/linecount"
+
+rm -rf .linecount
+rm -f "$fileName"
+
+echo "Installation complete."