latest is a small bash script that fetches the latest version of a JavaScript library from the net and stores it in a local file.
Copy latest to a directory in your path, e.g. /usr/local/bin or ~/bin.
latest LIBRARY [DESTINATION]
e.g. latest jquery jquery.js
Fork this Gist and add more libraries or features.
| #!/bin/bash | |
| SCRIPTNAME=${0##*/} | |
| LIBRARIES="jquery zepto backbone underscore prototype" | |
| txtund=$(tput sgr 0 1) # Underline | |
| txtbld=$(tput bold) # Bold | |
| txtred=$(tput setaf 1) # Red | |
| txtgrn=$(tput setaf 2) # Green | |
| txtylw=$(tput setaf 3) # Yellow | |
| txtblu=$(tput setaf 4) # Blue | |
| txtrst=$(tput sgr0) # Text reset | |
| function usage() { | |
| echo "${txtund}Usage:${txtrst} $SCRIPTNAME LIBRARY [DESTINATION]" | |
| echo | |
| echo "Libraries available:" | |
| for LIB in $LIBRARIES | |
| do | |
| echo " ${txtbld}›${txtrst} $LIB" | |
| done | |
| exit 2 | |
| } | |
| if [ -z "$1" ] | |
| then | |
| usage | |
| fi | |
| if [ -n "$2" ] | |
| then | |
| DESTINATION=$2 | |
| else | |
| DESTINATION="" | |
| fi | |
| function check_exists() { | |
| if [ -e $1 ] | |
| then | |
| read -p "${txtylw}${txtbld}$1 exists. Overwrite [yN]?${txtrst} " REALLY | |
| if [ "$REALLY" != "y" ] | |
| then | |
| exit 99 | |
| fi | |
| fi | |
| } | |
| function simple_get() { | |
| getting $3 | |
| check_exists $2 | |
| curl -s $1 > $2 | |
| downloaded $3 $2 | |
| } | |
| function getting() { | |
| echo "${txtblu}${txtbld}Getting $1 …${txtrst}" | |
| } | |
| function downloaded() { | |
| echo "${txtgrn}${txtbld}$1 downloaded and saved as $2.${txtrst}" | |
| } | |
| case $1 in | |
| jquery) | |
| [[ -n "$DESTINATION" ]] && FILENAME=$DESTINATION || FILENAME="jquery.min.js" | |
| simple_get "http://code.jquery.com/jquery.min.js" $FILENAME "jQuery" | |
| ;; | |
| zepto|zeptojs) | |
| getting "Zepto.js" | |
| [[ -n "$DESTINATION" ]] && FILENAME=$DESTINATION || FILENAME="zepto.min.js" | |
| check_exists $FILENAME | |
| HTML=`curl -s http://zeptojs.com/` | |
| ZIP_PATH=`echo $HTML | perl -wlne 'print $1 if /<a href="(\/downloads\/zepto-[^"]+)"/'` | |
| ZIP_URL="http://zeptojs.com${ZIP_PATH}" | |
| ZIP_TEMP=`mktemp -t get.zepto` | |
| wget -q -O $ZIP_TEMP $ZIP_URL | |
| unzip -p $ZIP_TEMP */dist/zepto.min.js > $FILENAME | |
| rm $ZIP_TEMP | |
| downloaded "Zepto.js" $FILENAME | |
| ;; | |
| backbone|backbonejs) | |
| [[ -n "$DESTINATION" ]] && FILENAME=$DESTINATION || FILENAME="backbone.min.js" | |
| simple_get "http://documentcloud.github.com/backbone/backbone-min.js" $FILENAME "Backbone.js" | |
| read -p "Should I also download Underscore.js, a requirement of Backbone.js? [yN] " UNDERSCORE | |
| if [ "$UNDERSCORE" = "y" ] | |
| then | |
| $0 underscore | |
| fi | |
| ;; | |
| underscore|underscorejs) | |
| [[ -n "$DESTINATION" ]] && FILENAME=$DESTINATION || FILENAME="underscore.min.js" | |
| simple_get "http://documentcloud.github.com/underscore/underscore-min.js" $FILENAME "Underscore.js" | |
| ;; | |
| prototype|prototypejs) | |
| getting "Prototype" | |
| [[ -n "$DESTINATION" ]] && FILENAME=$DESTINATION || FILENAME="prototype.js" | |
| check_exists $FILENAME | |
| HTML=`curl -s http://www.prototypejs.org/download` | |
| URL=`echo $HTML | perl -wlne 'print $1 if /(https:\/\/ajax.googleapis.com\/[^"]+prototype.js)/'` | |
| curl -s $URL > $FILENAME | |
| downloaded "Prototype" $FILENAME | |
| ;; | |
| *) | |
| echo "${txtund}${txtred}Error:${txtrst} Unknown library: $1" | |
| exit 99 | |
| esac |