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							133 lines
						
					
					
						
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							133 lines
						
					
					
						
							3.1 KiB
						
					
					
				| var _fs | |
| try { | |
|   _fs = require('graceful-fs') | |
| } catch (_) { | |
|   _fs = require('fs') | |
| } | |
| 
 | |
| function readFile (file, options, callback) { | |
|   if (callback == null) { | |
|     callback = options | |
|     options = {} | |
|   } | |
| 
 | |
|   if (typeof options === 'string') { | |
|     options = {encoding: options} | |
|   } | |
| 
 | |
|   options = options || {} | |
|   var fs = options.fs || _fs | |
| 
 | |
|   var shouldThrow = true | |
|   // DO NOT USE 'passParsingErrors' THE NAME WILL CHANGE!!!, use 'throws' instead | |
|   if ('passParsingErrors' in options) { | |
|     shouldThrow = options.passParsingErrors | |
|   } else if ('throws' in options) { | |
|     shouldThrow = options.throws | |
|   } | |
| 
 | |
|   fs.readFile(file, options, function (err, data) { | |
|     if (err) return callback(err) | |
| 
 | |
|     data = stripBom(data) | |
| 
 | |
|     var obj | |
|     try { | |
|       obj = JSON.parse(data, options ? options.reviver : null) | |
|     } catch (err2) { | |
|       if (shouldThrow) { | |
|         err2.message = file + ': ' + err2.message | |
|         return callback(err2) | |
|       } else { | |
|         return callback(null, null) | |
|       } | |
|     } | |
| 
 | |
|     callback(null, obj) | |
|   }) | |
| } | |
| 
 | |
| function readFileSync (file, options) { | |
|   options = options || {} | |
|   if (typeof options === 'string') { | |
|     options = {encoding: options} | |
|   } | |
| 
 | |
|   var fs = options.fs || _fs | |
| 
 | |
|   var shouldThrow = true | |
|   // DO NOT USE 'passParsingErrors' THE NAME WILL CHANGE!!!, use 'throws' instead | |
|   if ('passParsingErrors' in options) { | |
|     shouldThrow = options.passParsingErrors | |
|   } else if ('throws' in options) { | |
|     shouldThrow = options.throws | |
|   } | |
| 
 | |
|   var content = fs.readFileSync(file, options) | |
|   content = stripBom(content) | |
| 
 | |
|   try { | |
|     return JSON.parse(content, options.reviver) | |
|   } catch (err) { | |
|     if (shouldThrow) { | |
|       err.message = file + ': ' + err.message | |
|       throw err | |
|     } else { | |
|       return null | |
|     } | |
|   } | |
| } | |
| 
 | |
| function writeFile (file, obj, options, callback) { | |
|   if (callback == null) { | |
|     callback = options | |
|     options = {} | |
|   } | |
|   options = options || {} | |
|   var fs = options.fs || _fs | |
| 
 | |
|   var spaces = typeof options === 'object' && options !== null | |
|     ? 'spaces' in options | |
|     ? options.spaces : this.spaces | |
|     : this.spaces | |
| 
 | |
|   var str = '' | |
|   try { | |
|     str = JSON.stringify(obj, options ? options.replacer : null, spaces) + '\n' | |
|   } catch (err) { | |
|     if (callback) return callback(err, null) | |
|   } | |
| 
 | |
|   fs.writeFile(file, str, options, callback) | |
| } | |
| 
 | |
| function writeFileSync (file, obj, options) { | |
|   options = options || {} | |
|   var fs = options.fs || _fs | |
| 
 | |
|   var spaces = typeof options === 'object' && options !== null | |
|     ? 'spaces' in options | |
|     ? options.spaces : this.spaces | |
|     : this.spaces | |
| 
 | |
|   var str = JSON.stringify(obj, options.replacer, spaces) + '\n' | |
|   // not sure if fs.writeFileSync returns anything, but just in case | |
|   return fs.writeFileSync(file, str, options) | |
| } | |
| 
 | |
| function stripBom (content) { | |
|   // we do this because JSON.parse would convert it to a utf8 string if encoding wasn't specified | |
|   if (Buffer.isBuffer(content)) content = content.toString('utf8') | |
|   content = content.replace(/^\uFEFF/, '') | |
|   return content | |
| } | |
| 
 | |
| var jsonfile = { | |
|   spaces: null, | |
|   readFile: readFile, | |
|   readFileSync: readFileSync, | |
|   writeFile: writeFile, | |
|   writeFileSync: writeFileSync | |
| } | |
| 
 | |
| module.exports = jsonfile
 | |
| 
 |