review comments for build.sh

examples/build.sh

@@ -1,19 +1,18 @@
 #!/usr/bin/env bash
 
-SRCDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" # this source dir
-cd "$SRCDIR" # ensure this script can be run from anywhere
-
+# The example to build.
 EXAMPLE=$1
-cd "$EXAMPLE"
-
 # Optimization level. Can be either "--debug" or "--release". Defaults to debug.
 PROFILE=${2:---debug}
 
 # src: https://gist.github.com/fbucek/f986da3cc3a9bbbd1573bdcb23fed2e1
 set -e # error -> trap -> exit
 function info() { echo -e "[\033[0;34m $* \033[0m]"; } # blue: [ info message ]
 function fail() { FAIL="true"; echo -e "[\033[0;31mFAIL\033[0m] $*"; } # red: [FAIL]
-trap 'LASTRES=$?; LAST=$BASH_COMMAND; if [[ LASTRES -ne 0 ]]; then fail "Command: \"$LAST\" exited with exit code: $LASTRES"; elif [ "$FAIL" == "true"  ]; then fail finished with error; else echo -e "[\033[0;32m Finished! Run $EXAMPLE by serving the generated files in examples/static/ \033[0m]";fi' EXIT
+trap 'LASTRES=$?; LAST=$BASH_COMMAND; if [[ LASTRES -ne 0 ]]; then fail "Command: \"$LAST\" exited with exit code: $LASTRES"; elif [ "$FAIL" == "true" ]; then fail finished with error; else echo -e "[\033[0;32m Finished! Run $EXAMPLE by serving the generated files in examples/static/ \033[0m]";fi' EXIT
+SRCDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" # this source dir
+
+cd "$SRCDIR/$EXAMPLE" # "$SRCDIR" ensures that this script can be run from anywhere.
 
 # When using $CARGO_TARGET_DIR -> binary is located in different folder
 # Necessary to locate build files for wasm-bindgen
@@ -27,6 +26,7 @@ else
     TARGET_DIR=$TARGET_DIR/debug
 fi
 
+# Build the correct cargo build command depending on the optimization level.
 cargo_build() {
     if [[ "$PROFILE" = "--release" ]]; then
         cargo build --release --target wasm32-unknown-unknown "$@"
@@ -41,7 +41,7 @@ if [[ $EXAMPLE == *_wp ]]; then
     # wasm-pack overwrites .gitignore -> save -> restore
     cp "$SRCDIR/static/.gitignore" "$SRCDIR/static/.gitignore.copy"
     wasm-pack build "$PROFILE" --target web --out-name wasm --out-dir "$SRCDIR/static/"
-    rm "$SRCDIR/static/.gitignore"; mv "$SRCDIR/static/.gitignore.copy" $SRCDIR/static/.gitignore # restore .gitignore
+    rm "$SRCDIR/static/.gitignore"; mv "$SRCDIR/static/.gitignore.copy" "$SRCDIR/static/.gitignore" # restore .gitignore
 
 # multi_thread build -> two binary/wasm files
 elif [[ $EXAMPLE == multi_thread ]]; then