Change build-lite.sh to POSIX sh syntax

This should solve incompatibilities with non-GNU systems.

build-lite.sh

@@ -1,39 +1,41 @@
-#!/bin/bash
+#!/bin/sh
 # Build script for a "lite" (purely client-side) version of Aspine
 
-# Note: This script has only been tested with Bash in a GNU environment
-# (on Linux); your mileage may vary on BSD, macOS, Cygwin/MSYS (Windows), etc.
+# This script has been written in POSIX sh but has only been tested
+# in Bash in a GNU environment.
+
+# Dependencies: grep with support for context, sed, perl
 
 rm -rf dist-lite/
 mkdir -p dist-lite/
 
 cp -r public/* dist-lite/
 
-mappings="$(
+( \
 grep -A100 'new Map' serve.js \
 | grep -A3 '^    \[' \
 | grep -Ev '\[|\]' \
 | sed 's/        '\''//' \
-| sed 's/'\'',*//'
-)"
+| sed 's/'\'',*//' \
+) \
+| {
+	while read -r endpoint
+	do
+		read -r path
+
+		mkdir -p "$(dirname "dist-lite/$endpoint")"
+		# Create the parent directory
+		cp "./$path" "dist-lite/$endpoint"
+		# Copy the node module to dist-lite
+	done
+}
+# grep and sed commands explanation:
 # Find the line in serve.js containing 'new Map' and get the next 100 lines
 # Limit the search to lines that contain '    [' and the next three lines
 # Remove lines with brackets
 # Remove leading whitespace and single quote character
 # Remove trailing single quote character and comma (if any)
 
-echo $mappings | \
-while read -d ' ' endpoint
-do
-    read -d ' ' path
-
-    mkdir -p "$(dirname dist-lite$endpoint)"
-    # Create the parent directory
-    cp ".$path" "dist-lite$endpoint"
-    # Copy the node module to dist-lite
-done
-# https://stackoverflow.com/a/21256704
-
 cp -r ./node_modules/@fortawesome/fontawesome-free/webfonts/ \
 dist-lite/fonts/fontawesome/webfonts
 # Copy Font Awesome files
@@ -63,5 +65,5 @@ dist-lite/js/clock.js
 # https://unix.stackexchange.com/a/32912
 
 version="$(git describe | sed 's/^v\?\(.*\)/\1/')"
-sed -i 's/\/\/#include $version/"'$version'"/g' dist-lite/js/*
+sed -i 's/\/\/#include version/"'"$version"'"/g' dist-lite/js/*
 # Hard-code version number (use sed to trim 'v')

public/js/buttonFunctions.js

@@ -294,7 +294,7 @@ let exportTableData = async function(prefs) {
 //#ifdef lite
 /*
   obj.version = (
-//#include $version
+//#include version
   );
 */
 //#endif
@@ -375,7 +375,7 @@ let importTableData = async function(obj) {
 //#ifdef lite
 /*
   let version = (
-//#include $version
+//#include version
   );
 */
 //#endif

public/js/home.js

@@ -1059,7 +1059,7 @@ $.ajax("/version").then(ver => $("#version").text(ver));
 //#ifdef lite
 /*
 $("#version").text(
-//#include $version
+//#include version
 );
 */
 //#endif