lib/pbxFile.js

var path = require('path'),
    util = require('util');

var DEFAULT_SOURCETREE = '"<group>"',
    DEFAULT_PRODUCT_SOURCETREE = 'BUILT_PRODUCTS_DIR',
    DEFAULT_FILEENCODING = 4,
    DEFAULT_GROUP = 'Resources',
    DEFAULT_FILETYPE = 'unknown';

var FILETYPE_BY_EXTENSION = {
        a: 'archive.ar',
        app: 'wrapper.application',
        appex: 'wrapper.app-extension',
        bundle: 'wrapper.plug-in',
        dylib: 'compiled.mach-o.dylib',
        framework: 'wrapper.framework',
        h: 'sourcecode.c.h',
        m: 'sourcecode.c.objc',
        markdown: 'text',
        mdimporter: 'wrapper.cfbundle',
        octest: 'wrapper.cfbundle',
        pch: 'sourcecode.c.h',
        plist: 'text.plist.xml',
        sh: 'text.script.sh',
        swift: 'sourcecode.swift',
        tbd: 'sourcecode.text-based-dylib-definition',
        xcassets: 'folder.assetcatalog',
        xcconfig: 'text.xcconfig',
        xcdatamodel: 'wrapper.xcdatamodel',
        xcodeproj: 'wrapper.pb-project',
        xctest: 'wrapper.cfbundle',
        xib: 'file.xib',
        strings: 'text.plist.strings'
    },
    GROUP_BY_FILETYPE = {
        'archive.ar': 'Frameworks',
        'compiled.mach-o.dylib': 'Frameworks',
        'sourcecode.text-based-dylib-definition': 'Frameworks',
        'wrapper.framework': 'Frameworks',
        'embedded.framework': 'Embed Frameworks',
        'sourcecode.c.h': 'Resources',
        'sourcecode.c.objc': 'Sources',
        'sourcecode.swift': 'Sources'
    },
    PATH_BY_FILETYPE = {
        'compiled.mach-o.dylib': 'usr/lib/',
        'sourcecode.text-based-dylib-definition': 'usr/lib/',
        'wrapper.framework': 'System/Library/Frameworks/'
    },
    SOURCETREE_BY_FILETYPE = {
        'compiled.mach-o.dylib': 'SDKROOT',
        'sourcecode.text-based-dylib-definition': 'SDKROOT',
        'wrapper.framework': 'SDKROOT'
    },
    ENCODING_BY_FILETYPE = {
        'sourcecode.c.h': 4,
        'sourcecode.c.h': 4,
        'sourcecode.c.objc': 4,
        'sourcecode.swift': 4,
        'text': 4,
        'text.plist.xml': 4,
        'text.script.sh': 4,
        'text.xcconfig': 4,
        'text.plist.strings': 4
    };


function unquoted(text){
    return text.replace (/(^")|("$)/g, '')
}

function detectType(filePath) {
    var extension = path.extname(filePath).substring(1),
        filetype = FILETYPE_BY_EXTENSION[unquoted(extension)];

    if (!filetype) {
        return DEFAULT_FILETYPE;
    }

    return filetype;
}

function defaultExtension(fileRef) {
    var filetype = fileRef.lastKnownFileType || fileRef.explicitFileType;

    for(var extension in FILETYPE_BY_EXTENSION) {
        if(FILETYPE_BY_EXTENSION.hasOwnProperty(unquoted(extension)) ) {
             if(FILETYPE_BY_EXTENSION[unquoted(extension)] === filetype )
                 return extension;
        }
    }
}

function defaultEncoding(fileRef) {
    var filetype = fileRef.lastKnownFileType || fileRef.explicitFileType,
        encoding = ENCODING_BY_FILETYPE[unquoted(filetype)];

    if (encoding) {
        return encoding;
    }
}

function detectGroup(fileRef, opt) {
    var extension = path.extname(fileRef.basename).substring(1),
        filetype = fileRef.lastKnownFileType || fileRef.explicitFileType,
        groupName = GROUP_BY_FILETYPE[unquoted(filetype)];

    if (extension === 'xcdatamodeld') {
        return 'Sources';
    }

    if (opt.customFramework && opt.embed) {
        return GROUP_BY_FILETYPE['embedded.framework'];
    }

    if (!groupName) {
        return DEFAULT_GROUP;
    }

    return groupName;
}

function detectSourcetree(fileRef) {

    var filetype = fileRef.lastKnownFileType || fileRef.explicitFileType,
        sourcetree = SOURCETREE_BY_FILETYPE[unquoted(filetype)];

    if (fileRef.explicitFileType) {
        return DEFAULT_PRODUCT_SOURCETREE;
    }

    if (fileRef.customFramework) {
        return DEFAULT_SOURCETREE;
    }

    if (!sourcetree) {
        return DEFAULT_SOURCETREE;
    }

    return sourcetree;
}

function defaultPath(fileRef, filePath) {
    var filetype = fileRef.lastKnownFileType || fileRef.explicitFileType,
        defaultPath = PATH_BY_FILETYPE[unquoted(filetype)];

    if (fileRef.customFramework) {
        return filePath;
    }

    if (defaultPath) {
        return path.join(defaultPath, path.basename(filePath));
    }

    return filePath;
}

function defaultGroup(fileRef) {
    var groupName = GROUP_BY_FILETYPE[fileRef.lastKnownFileType];

    if (!groupName) {
        return DEFAULT_GROUP;
    }

    return defaultGroup;
}

function pbxFile(filepath, opt) {
    var opt = opt || {};

    this.basename = path.basename(filepath);
    this.lastKnownFileType = opt.lastKnownFileType || detectType(filepath);
    this.group = detectGroup(this, opt);

    // for custom frameworks
    if (opt.customFramework == true) {
        this.customFramework = true;
        this.dirname = path.dirname(filepath).replace(/\\/g, '/');
    }

    this.path = defaultPath(this, filepath).replace(/\\/g, '/');
    this.fileEncoding = this.defaultEncoding = opt.defaultEncoding || defaultEncoding(this);

    // When referencing products / build output files
    if (opt.explicitFileType) {
        this.explicitFileType = opt.explicitFileType;
        this.basename = this.basename + '.' + defaultExtension(this);
        delete this.path;
        delete this.lastKnownFileType;
        delete this.group;
        delete this.defaultEncoding;
    }

    this.sourceTree = opt.sourceTree || detectSourcetree(this);
    this.includeInIndex = 0;

    if (opt.weak && opt.weak === true)
        this.settings = { ATTRIBUTES: ['Weak'] };

    if (opt.compilerFlags) {
        if (!this.settings)
            this.settings = {};
        this.settings.COMPILER_FLAGS = util.format('"%s"', opt.compilerFlags);
    }

    if (opt.embed && opt.sign) {
      if (!this.settings)
          this.settings = {};
      if (!this.settings.ATTRIBUTES)
          this.settings.ATTRIBUTES = [];
      this.settings.ATTRIBUTES.push('CodeSignOnCopy');
    }
}

module.exports = pbxFile;