Parsing files to populate placeholders with values - build

Question

Background Info
I have a JS library which consists of many constructor functions. I am using grunt-concat & -uglify to compile these into a single file.
Each constructor has a readme.md file.
The library is used to create advertising banners. It is used by around 10 developers who create their own advertising templates within a folder Templates which use the library. The files are .xml files which also provide a CDATA tag where they can insert their JavaScript code.
Question
I would like to populate the readme files with a counter, so that the developers can see how popular a particular constructor is directly in its documentation.
Number of occurrences (<% occurrences %>)
What I've already done
I can get the number of occurrences by executing
find . -name "*.xml" -exec grep -e "new\Foo\.Bar" {} \; | wc -l
It would be great if I could grab this value and insert it to the readme file.

Answer 1

grunt.registerTask('count_occurrences', '', function () {
var exec = require('child_process').execSync;
var result = exec("find . -name "*.xml" -exec grep -e "new\Foo\.Bar" {} \; | wc -l", { encoding: 'utf8' });
grunt.log.writeln(result);
// Now write result to your README file
grunt.file.write("README.md", result);
});
or
You can use the grunt plugin called exec (https://github.com/jharding/grunt-exec) to execute cmd line functions, e.g. find.
You probably would want something like this in your GruntFile.js:
exec: {
count_occurrences: {
cmd: function() {
return 'find . -name "*.xml" -exec grep -e "new\Foo\.Bar" {} \; | wc -l';
}
}
}
Then call grunt exec:echo_name