I recently had to install jshint and rhino. It was a bit of a challenge because they needed ant and npm (node package manager). This blog describes what I did and provides a bash shell script that you can use.
Jshint (http://www.jshint.com) is a tool that allows you to statically analyze javascript code. It is useful for detecting ertors and enforcing coding standards.
Rhino is a command line interpreter for javascript (http://mozilla.org/rhino) that is written in java. It can be used for testing and for server side implementations.
You do not have to be root to install these tools.
1 Download
Here are the links to the project code:
| Archive | Size | Extract Command |
| jsdev.tar.bz2 | 4.6K | tar jxf jsdev.tar.bz2 |
| jsdev.tar.gz | 4.6K | tar zxf jsdev.tar.gz |
| jsdev.zip | 6.0K | unzip jsdev.zip |
2 Extract
Use the appropriate command from the previous to table to extract the contents of the archive. When you are finished it will look like this:
jsdev/Makefile |
3 Build
Build the system using make. It requires you to have make and java to be installed.
When the build it complete, the tools will be in jsdev/rtf/bin directory. You will need to add this directory to your path environment variable as shown in next section to use the tools.
4 Usage
The example below takes you through the entire process of downloading, installing and using the tools.
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$ bash -version $ mkdir /home/me/work $ cd /home/me/work $ wget http://downloads.joelinoff.com/jsdev.tar.bz2 <output snipped> $ tar jxf jsdev.tar.bz2 <output snipped> $ rm -f jsdev.tar.bz2 $ cd jsdev $ make <output snipped> $ export PATH="/home/me/work/rtf/bin:${PATH}" $ which jshint /home/me/work/rtf/bin/jshint $ which rhino /home/me/work/rtf/bin/rhino $ rhino -e 'print("hello, world!");' hello, world! $ cat >test.js <<EOF // Contains intentional errors. // Missing semi-colon: var x=42 // Bad conditional expression: if (x=2) { print('GOOD'); } EOF $ jshint test.js /tmp/x.js: line 4, col 9, Missing semicolon. /tmp/x.js: line 7, col 6, Expected a conditional expression and instead saw an assignment. 2 errors $ |
5 Trouble Shooting
I have only tested this on a CentOS 5.5 system.
If something goes wrong, take a look at the setup.sh script. It is most likely because there are some packages missing.
Furthermore, you can remove the sections for ant and/or npm if you already have them installed.
6 Manual Steps
Here are the manual steps.
- Install ant.
- Install npm (node).
- Install jshost using npm.
- Install rhino using ant.
- Create the rhino tool.
If you want to install in a directory like /usr/local/bin change the rtf variable assignment at line 43.
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#!/bin/bash # Make a complete javascript test environment consisting # of rhino and jshint. # ================================================================ # Useful command. # ================================================================ function docmd() { local cmd="$*" echo echo "# ================================================================" echo "# CMD: $cmd" echo "# PWD: "`pwd` echo "# ================================================================" $cmd local st=$? if (( $st )) ; then echo "EXIT: Command exited with status $st (FAILED)." echo " CMD: $cmd" exit 1 else echo "EXIT: Command exited with status $st (PASSED)." fi } # ================================================================ # my-wget # ================================================================ function my-wget() { local src="$1" local dst="$2" if [ ! -f $dst ] ; then docmd wget $src -O $dst fi } # ================================================================ # Setup # ================================================================ medir=$(dirname -- $(readlink -f $0)) rootdir=$medir rtf=$rootdir/rtf archive=$rootdir/archives export PATH="{rtf}/bin:${PATH}" rds=('pkgs' 'rtf' 'archives') for rd in ${rds[@]} ; do if [ ! -d $rd ] ; then docmd mkdir $rd fi done # ================================================================ # ant -- needed for rhino # ================================================================ fn=apache-ant-1.8.4-bin.tar.bz2 arpath=$archive/$fn my-wget http://mirror.nexcess.net/apache/ant/binaries/$fn $arpath if [ ! -d pkgs/apache-ant-1.8.4 ] ; then pushd pkgs docmd tar jxf $arpath popd fi # Very simple install, just copy over the bin and lib dirs. if [ ! -f $rtf/bin/ant ] ; then pushd pkgs docmd rsync -avz apache-ant-1.8.4/bin $rtf/ docmd rsync -avz apache-ant-1.8.4/lib $rtf/ popd fi test -f $rtf/bin/ant # ================================================================ # node (npm) -- needed for jhint # ================================================================ fn=node-v0.8.4.tar.gz arpath=$archive/$fn my-wget http://nodejs.org/dist/v0.8.4/$fn $arpath if [ ! -d pkgs/node-v0.8.4 ] ; then pushd pkgs docmd tar zxf $arpath popd fi if [ ! -f $rtf/bin/node ] ; then pushd pkgs/node-v0.8.4 docmd ./configure --help docmd ./configure --prefix=$rtf docmd make docmd make install popd fi test -f $rtf/bin/node # ================================================================ # jshint # ================================================================ if [ ! -d pkgs/node-jshint ] ; then pushd pkgs docmd env GIT_SSL_NO_VERIFY=true git clone https://github.com/jshint/node-jshint.git popd fi if [ ! -f $rtf/bin/jshint ] ; then pushd pkgs/node-jshint docmd ./configure --prefix=$rtf popd fi test -f $rtf/bin/jshint # ================================================================ # rhino -- javascript interpreter # ================================================================ if [ ! -d pkgs/rhino ] ; then pushd pkgs docmd env GIT_SSL_NO_VERIFY=true git clone https://github.com/mozilla/rhino.git popd fi if [ ! -d rhino/build ] ; then pushd pkgs/rhino docmd ant docmd ant compile-all docmd ant jar popd fi if [ ! -d $rtf/rhino ] ; then docmd rsync -avz pkgs/rhino/build $rtf/rhino/ fi if [ ! -d $rtf/bin/rhino ] ; then cat >$rtf/bin/rhino <<EOF #!/bin/bash # This should handle spaces in arguments: # rhino -e 'print("Hello, world!")'' i=0 argv=() for arg in "\$@"; do argv[\$i]="\$arg" i=\$((i + 1)) done # Now execute the command. java -jar $rtf/rhino/build/rhino1_7R5pre/js.jar "\${argv[@]}" EOF chmod a+x $rtf/bin/rhino fi test -f $rtf/rhino test -f $rtf/bin/rhino # ================================================================ # Installation tests. # ================================================================ if [ ! -f .OK ] ; then docmd rhino -e 'print("hello");' cat >$$.js <<EOF print("hello, world"); EOF docmd jshint $$.js rm -f $$.js touch .OK fi |
I hope that this is helpful.
Make fails. It tries to run ./configure but that is not in the downloaded .tar.gz
What error message do you see?
Error received is as follows
# ================================================================
# CMD: tar jxf /home/administrator/Downloads/Rhino/jsdev/archives/apache-ant-1.8.4-bin.tar.bz2
# PWD: /home/administrator/Downloads/Rhino/jsdev/pkgs
# ================================================================
bzip2: Compressed file ends unexpectedly;
perhaps it is corrupted? *Possible* reason follows.
bzip2: Inappropriate ioctl for device
Input file = (stdin), output file = (stdout)
It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.
You can use the `bzip2recover’ program to attempt to recover
data from undamaged sections of corrupted files.
tar: Child returned status 2
tar: Error is not recoverable: exiting now
EXIT: Command exited with status 2 (FAILED).
CMD: tar jxf /home/administrator/Downloads/Rhino/jsdev/archives/apache-ant-1.8.4-bin.tar.bz2
Command exited with non-zero status 1
0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 5696maxresident)k
0inputs+0outputs (0major+2000minor)pagefaults 0swaps
make: *** [all] Error 1
Thanks for letting me know, I will check it. Can you try again from scratch.