read web version of release.txt before downloading

resolves #330

webapp/install-mts.sh

@@ -15,6 +15,27 @@ $1
 END
     exit 1
 }
+customWarn() {
+    cat <<END
+
+WARNING:
+$1
+
+
+END
+    echo -en "\a" > /dev/tty0  # beep (You must specify a tty path if not in console mode)
+    echo "Press Ctrl+C to cancel..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "3..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "2..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "1..."
+    sleep 1
+}
 
 install_git_mod_here(){
     git_url="$1"
@@ -162,6 +183,7 @@ END
     end=`date +%s`
     compile_time=$((end-start))
     echo "Compiling the program finished in $compile_time seconds."
+    cp release.txt minetest/ | customWarn "Cannot copy `pwd`/release.txt to `pwd`/minetest/"
 else
     echo "* using existing minetest..."
 fi

webapp/reset-minetest-install-source.sh

@@ -14,12 +14,58 @@ in_use_name=minetest
 #  killall $in_use_name
 #fi
 url=https://downloads.minetest.org
+release_txt_url=http://downloads.minetest.org/release.txt
+customWarn() {
+    cat <<END
+
+WARNING:
+$1
+
+
+END
+    echo -en "\a" > /dev/tty0  # beep (You must specify a tty path if not in console mode)
+    echo "Press Ctrl+C to cancel..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "3..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "2..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "1..."
+    sleep 1
+}
 
 customDie () {
     echo "ERROR: Cannot continue since"
     echo "$1"
     exit 1
 }
+available_release_line=`curl http://downloads.minetest.org/release.txt | head -n 1`
+# echo "Release data: $available_release_line"  # "Release *" where * is YYMMDD
+# See <https://unix.stackexchange.com/questions/174037/extracting-the-second-word-from-a-string-variable>
+available_version=$(echo $available_release_line | awk '{print $2}')
+# OR: available_version="${available_release_line##* }"  # get second word
+if [ ${#available_version} -ne 6 ]; then
+    customDie "The available version is not recognized: $available_version"
+fi
+installed_release_line=`head -n 1 ~/minetest/release.txt`
+installed_version=$(echo $installed_release_line | awk '{print $2}')
+compiled_release_line=`head -n 1 ~/minetest/release.txt`
+compiled_version=$(echo $compiled_release_line | awk '{print $2}')
+echo "installed_version: $installed_version"
+echo "compiled_version: $compiled_version"
+echo "available_version: $available_version"
+if [ "@$installed_version" = "@$available_version" ]; then
+    echo "You already have the latest version installed."
+    exit 1
+fi
+if [ "@$compiled_version" -ne "@$installed_version" ]; then
+    echo "ERROR: You have not yet installed version $compiled_version which you already compiled (you have installed $installed_version)."
+    echo "You should run ./install-mts.sh instead (with --client option if you want more than minetestserver)"
+    exit 2
+fi
 enable_offline=false
 for var in "$@"
 do

webapp/versionize.sh

@@ -16,6 +16,27 @@ if [ -z "$original_src_path" ]; then
     echo "You must specify a zip file path OR directory path."
     exit 1
 fi
+customWarn() {
+    cat <<END
+
+WARNING:
+$1
+
+
+END
+    echo -en "\a" > /dev/tty0  # beep (You must specify a tty path if not in console mode)
+    echo "Press Ctrl+C to cancel..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "3..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "2..."
+    sleep 1
+    echo -en "\a" > /dev/tty0
+    echo "1..."
+    sleep 1
+}
 customDie() {
     echo
     echo "ERROR:"
@@ -75,17 +96,24 @@ elif [ -d "$try_path" ]; then
 else
     customDie "$try_path is not a file or directory."
 fi
-if [ ! -f "$src_path/release.txt" ]; then
+release_txt_path="$src_path/minetest/release.txt"
+if [ ! -f "$release_txt_path" ]; then
+    try_release_txt_path="$src_path/release.txt"
+    if [ ! -f "$try_release_txt_path" ]; then
         echo
         echo
         echo "* '$src_path' remains$destroy_msg."
-    customDie "Missing $src_path/release.txt"
+        customDie "Missing $release_txt_path (or $src_path/release.txt)"
+    else
+        echo "Missing $release_txt_path (usually copied from $try_release_txt_path by EnlivenMinetest compille script(s)); reverting to $try_release_txt_path"
+        release_txt_path="$try_release_txt_path"
+    fi
 fi
-release_line="`head -n 1 $src_path/release.txt`"
+release_line="`head -n 1 $release_txt_path`"
 version="${release_line##* }"  # get second word
 version_len=${#version}
 if [ "$version_len" -ne "6" ]; then
-    customDie "Unexpected version scheme (not 6 characters): '$version'"
+    customDie "Unexpected version scheme (not 6 characters): '$version' near '$release_line' in file $release_txt_path"
 fi
 echo "src_name=$src_name"
 echo "src_path=$src_path"
@@ -103,6 +131,9 @@ if [ ! -z "$src_archive" ]; then
     extension="${filename##*.}"
     filename="${filename%.*}"
     dst_archive="$versions_path/$filename-$version.$extension"
+    if [ -f "$dst_archive" ]; then
+        customWarn "This will overwrite '$dst_archive' with '$src_archive'."
+    fi
     if [ -f "$src_archive" ]; then
         mv "$src_archive" "$dst_archive" || customDie "Cannot mv '$src_archive' '$dst_archive'"
         echo "* moved archive to '$dst_archive'"