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September 10, 2017 17:52
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Create an object map of a directory tree then save to .json and .js files.
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| #!/usr/bin/env groovy | |
| import groovy.json.* | |
| // Drill down through the directory structure and output | |
| // a representation to json and js files | |
| // | |
| // usage: | |
| // | |
| // ./filList.groovy ./ files._ comma,separated,list,of,files,to,skip | |
| // ^-- script ^-- start dir ^-- output file name ^-- skip ALL files with these names | |
| // NOTE: for the output file name, using a ._ extension means that BOTH .json and .js files are created | |
| // set to current directory if not specified as the first argument | |
| def startPath = args.length >= 1 ? args[0] : '.' | |
| // extract the start path directory name | |
| def startDir = (new File(new File(startPath).canonicalPath)).name | |
| // rewrite startPath to current directory if necessary | |
| if (startPath ==~ /^(\.|\.\/)$/) { | |
| startPath = '../' + startDir | |
| } | |
| // pass comma-separated list of file names to skip as third argument | |
| skipList = (args.length >= 3 ? args[2].split(/\s*,\s*/) : []) | |
| // main method for creating the file list object | |
| def makeFileList(File file) { | |
| def obj = ['.': null] | |
| def fileList = null | |
| // creating the '.' item here will create the | |
| // property for every directory, even if it's empty | |
| file.listFiles().collect { it }.each { | |
| // skip files that match the following pattern... | |
| def skip = it.name ==~ /^(\.DS_Store|\._.*|\.git.*|\.idea.*)/ | |
| if (skip || skipList.contains(it.name)) { | |
| return | |
| } | |
| if (it.directory) { | |
| fileList = makeFileList(it) | |
| obj[it.name] = fileList | |
| // empty directories will have a single '.' property set to null, | |
| // otherwise, it will be an object map of directories | |
| //obj[it.name] = fileList.size() ? fileList : ['.':null] | |
| } else { | |
| // creating the '.' item here will prevent | |
| // the creation of an empty '.' array | |
| // if there are no *files* in the folder | |
| //obj['.'] = obj['.'] ?: [] | |
| //obj['.'].add(it.name) | |
| // TODO: DECIDE ON ARRAY OR MAP FOR FILES | |
| // TODO: ARRAY IS CLEANER BUT MAP IS EASIER TO TEST | |
| obj['.'] = obj['.'] ?: [:] | |
| obj['.'][it.name] = it.length() | |
| } | |
| } | |
| // if there are folders but no files, | |
| // remove the '.' property | |
| if (fileList && !obj['.']) { | |
| obj.remove('.') | |
| } | |
| return obj | |
| } | |
| def fileListing = [ | |
| (startDir): makeFileList(new File(startPath)) | |
| ] | |
| def jsonFileList = new JsonBuilder(fileListing).toPrettyString() | |
| // specify a file name (without extension) as the second argument | |
| // or a 'files.json' file will be written to the same | |
| // directory specified in the first argument or the working | |
| // directory where the script is invoked | |
| def outputFile = args.length >= 2 ? args[1] : 'files' | |
| def jsonFile = outputFile ==~ /(?i).*(\.json|\.\*|\._)$/ | |
| def jsFile = outputFile ==~ /(?i).*(\.js|\.\*|\._)$/ | |
| //println 'jsonFile: ' + jsonFile | |
| //println 'jsFile: ' + jsFile | |
| // if neither extension is present, do only json | |
| if (!jsonFile && !jsFile) { | |
| jsonFile = true | |
| } | |
| //println 'jsonFile: ' + jsonFile | |
| //println 'jsFile: ' + jsFile | |
| // strip file extension if present | |
| outputFile = outputFile.replaceAll(/(?i)(\.json|\.js|\.\*|\._)$/, '') | |
| // write to JSON file | |
| if (jsonFile) { | |
| new File(startPath, outputFile + '.json').newWriter().withWriter { w -> | |
| w << jsonFileList | |
| } | |
| } | |
| // write to js file | |
| if (jsFile) { | |
| def jsVar = (startDir + '-' + outputFile).replaceAll(/^\W*/, '').replaceAll(/\W+|-+/, '-') | |
| new File(startPath, outputFile + '.js').newWriter().withWriter { w -> | |
| w << ("window['" + startDir + "'] = { '" + outputFile + "': " + jsonFileList + '};') | |
| } | |
| } |
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Sample usage:
./fileListMap.groovy- launches the script./- the start directory (the directory the script is processing, not where the script resides)myFileList- the output file name (without extension - both .json and .js files are created).git,.gitignore,foo,bar,bogus- comma-separated list of files to skip - ALL MATCHING FILES WILL BE SKIPPED, REGARDLESS OF THEIR LOCATION IN THE HIERARCHY