From 48ad8c87fd6cc901a4616f3ef02e7f163459a4c5 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Thu, 4 Oct 2018 00:47:48 +0200
Subject: Add --bundle-install option to reduce distributable package size

* Downloads libraries from internet if they are missing from the system
* Libraries are shared among all sibs projects as long as they use same
library versions
---
 scripts/download_dependencies.sh | 124 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100755 scripts/download_dependencies.sh

(limited to 'scripts/download_dependencies.sh')

diff --git a/scripts/download_dependencies.sh b/scripts/download_dependencies.sh
new file mode 100755
index 0000000..8349068
--- /dev/null
+++ b/scripts/download_dependencies.sh
@@ -0,0 +1,124 @@
+#!/bin/bash
+
+if (( "$#" != 1 )); then
+    echo "usage: download_dependencies.sh <program_name>"
+    exit 1
+fi
+
+is_root=0
+if [ $(id -u) = 0 ]; then
+    is_root=1
+fi
+
+program_name="$1"
+script_path=`readlink -f $0`
+script_dir=`dirname $script_path`
+
+if [ -f /usr/lib/sibs/"$program_name".cache ]; then
+    #echo "No need to download dependencies, all dependencies exist in cache"
+    exit 0
+fi
+
+if [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$program_name".cache ]; then
+    #echo "No need to download dependencies, all dependencies exist in cache"
+    exit 0
+fi
+
+command -v sha1sum > /dev/null || { echo "Missing program: sha1sum"; exit 1; }
+command -v wget > /dev/null || { echo "Missing program: wget"; exit 1; }
+
+set -e
+IFS=$'\n' GLOBIGNORE='*' command eval 'dependencies=($(cat "$script_dir"/dependencies.conf))'
+IFS=$'\n' GLOBIGNORE='*' command eval 'urls=($(cat "$script_dir"/urls.conf))'
+IFS=$'\n' GLOBIGNORE='*' command eval 'libmaps=($(cat "$script_dir"/libmap.conf))'
+
+if (( "${#dependencies[@]}" % 2 != 0 )); then
+    echo "Invalid number of arguments in dependencies.conf file. Expected multiple libraries which are the dependencies, followed by their checksum"
+    exit 4
+fi
+
+program_libs_dir=""
+if [ $is_root -eq 0 ]; then
+    mkdir -p ~/.local/lib/sibs
+    program_libs_dir=~/.local/lib/sibs/"$program_name"
+else
+    mkdir -p /usr/lib/sibs
+    program_libs_dir=/usr/lib/sibs/"$program_name"
+fi
+mkdir -p "$program_libs_dir"
+set +e
+
+for (( i=0; i<${#dependencies[@]}; i=$i+2 ))
+do
+    file=${dependencies[i]}
+    checksum_file="$file".sha1
+    checksum=${dependencies[i+1]}
+
+    if [ -f /usr/lib/sibs/"$file" ] && [ "$checksum"  == "$(cat /usr/lib/sibs/$checksum_file)" ]; then
+        #echo "Using sibs global lib file $file"
+    elif [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$file" ] && [ "$checksum"  == "$(cat ~/.local/lib/sibs/$checksum_file)" ]; then
+        #echo "Using sibs user lib file $file"
+    elif [ -f /usr/lib/"$file" ] && echo "$checksum" /usr/lib/"$file" | sha1sum -c --status; then
+        #echo "Using system lib file $file"
+        set -e
+        if [ $is_root -eq 0 ]; then
+            cp /usr/lib/"$file" ~/.local/lib/sibs/"$file"
+            echo "$checksum" > ~/.local/lib/sibs/"$checksum_file"
+        else
+            cp /usr/lib/"$file" /usr/lib/sibs/"$file"
+            echo "$checksum" > /usr/lib/sibs/"$checksum_file"
+        fi
+        set +e
+    else
+        downloaded=0
+        for url in "${urls[@]}"; do
+            dst_dir=""
+            if [ $is_root -eq 0 ]; then
+                dst_dir=~/.local/lib/sibs
+            else
+                dst_dir=/usr/lib/sibs
+            fi
+
+            #echo "Downloading missing library from $url/$file"
+            if wget -q --show-progress -O "$dst_dir/$file" "$url/$file"; then
+                echo "$checksum" > "$dst_dir/$checksum_file"
+                downloaded=1
+                break
+            fi
+        done
+
+        if [ $downloaded -eq 0 ]; then
+            echo "Failed to download dependency $file from all urls"
+            exit 2
+        fi
+    fi
+done
+
+for (( i=0; i<${#libmaps[@]}; i=$i+2 ))
+do
+    src=${libmaps[i]}
+    dst=${libmaps[i+1]}
+
+    lib_file=""
+    if [ -f /usr/lib/sibs/"$src" ]; then
+        lib_file=/usr/lib/sibs/"$src"
+    elif [ $is_root -eq 0 ] && [ -f ~/.local/lib/sibs/"$src" ]; then
+        lib_file=~/.local/lib/sibs/"$src"
+    elif [ -f /usr/lib/"$src" ]; then
+        lib_file=/usr/lib/"$src"
+    fi
+
+    #echo "Creating symlink for lib file $dst"
+    ln -sf "$lib_file" "$program_libs_dir/$dst"
+    if [ $? -ne 0 ]; then
+        echo "Failed to create symlink for program"
+        exit 3
+    fi
+done
+
+set -e
+if [ $is_root -eq 0 ]; then
+    touch ~/.local/lib/sibs/"$program_name".cache
+else
+    touch /usr/lib/sibs/"$program_name".cache
+fi
\ No newline at end of file
-- 
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