/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing ** ** This file is part of Qbs. ** ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms and ** conditions see http://www.qt.io/terms-conditions. For further information ** use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 or version 3 as published by the Free ** Software Foundation and appearing in the file LICENSE.LGPLv21 and ** LICENSE.LGPLv3 included in the packaging of this file. Please review the ** following information to ensure the GNU Lesser General Public License ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, The Qt Company gives you certain additional ** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ****************************************************************************/ /*! \contentspage list-of-items.html \previouspage loadablemodule-item.html \page module-item.html \nextpage probe-item.html \ingroup list-of-items \title Module Item \brief Represents a collection of properties and items that can be loaded into a product. A \c Module item is a collection of properties and language items that are used for building a product if the product has a \l{Depends Item}{dependency} on the module. The following (somewhat artificial) module pre-processes text files by removing certain characters from them: \code import qbs import qbs.FileInfo import qbs.TextFile Module { property stringList unwantedCharacters: [] FileTagger { patterns: ["*.raw"] fileTags: ["raw-txt"] } Rule { inputs: ["raw-txt"] Artifact { filePath: FileInfo.relativePath(input.filePath, product.sourceDirectory) + "/" + input.fileName + ".processed" fileTags: ["processed-txt"] } prepare: { var cmd = new JavaScriptCommand(); cmd.description = "Processing " + input.fileName; cmd.sourceCode = function() { var inFile = new TextFile(input.filePath, TextFile.ReadOnly); var content = inFile.readAll(); inFile.close(); var unwantedChars = product.moduleProperty("txt_processor", "unwantedCharacters"); for (var c in unwantedChars) content = content.replace(unwantedChars[c], ""); var outFile = new TextFile(output.filePath, TextFile.WriteOnly); outFile.write(content); outFile.close(); }; return cmd; } } } \endcode And this is how a product would use the module: \code Product { type: "processed-txt" Depends { name: "txt_processor" } txt_processor.unwantedCharacters: ["\r"] files: [ "file1.raw", "file2.raw" ] } \endcode Of course, normally the pre-processed files would not be the target artifacts of the product, but rather serve as inputs to a different rule that will often come from a different module. How you make your own modules available to \QBS is explained \l{Custom Modules and Items}{here}. \section1 Special Property Values For every property defined in a module, \QBS provides the following special built-in values: \section2 \c base This value is useful when making use of inheritance. It stands for the value of the respective property in the item one level up in the inheritance chain. For instance: \code Product { // defined in MyProduct.qbs Depends { name: "mymodule" } mymodule.someProperty: ["value1"] } ------ some other file ------ MyProduct { mymodule.someProperty: base.concat(["value2"]) // => ["value1", "value2"] } \endcode \section2 \c original This is the value of the property in the module itself (possibly overridden from a profile or the command line). Use it to set a module property conditionally: \code Module { // This is mymodule property string aProperty: "z" } ---------- Product { Depends { name: "mymodule" } Depends { name: "myothermodule" } mymodule.aProperty: myothermodule.anotherProperty === "x" ? "y" : original // => "y" if myothermodule.anotherProperty is "x", "z" otherwise \endcode \section2 \c outer This value is used in nested items, where it refers to the value of the respective property in the surrounding item. It is often encountered in \l{Group Item}{groups}: \code Product { Depends { name: "mymodule" } mymodule.someProperty: ["value1"] Group { name: "special files" files: ["somefile1", "somefile2"] mymodule.someProperty: outer.concat(["value"]) // => ["value1", "value2"] } } \endcode \section1 Module Properties \table \header \li Property \li Type \li Default \li Description \row \li additionalProductTypes \li string list \li empty list \li The elements of this list will be added to the \c type property of a product that has a dependency on the module. \row \li condition \li bool \li \c true \li Controls whether the module is enabled. If this property is \c false, the surrounding \c Module item will not be considered in the module look-up. \row \li present \li bool \li \c true \li This property is read-only. Its value is \c false if and only if the respective \c Depends item had its \c required property set to \c false and the module was not found. \row \li setupBuildEnvironment \li script \li \c undefined \li Script for setting up the environment in which the project is built. Use the \c putEnv, \c getEnv, and \c unsetEnv functions to alter the environment. The return value of this script is ignored. \row \li setupRunEnvironment \li script \li \c setupBuildEnvironment \li Script for setting up the environment in which the project is run. \row \li validate \li script \li \c undefined \li Script that is run after the module is loaded. It can be used to check property values and throw errors in unexpected cases. The return value is ignored. \endtable */