XPack Component Interfaces

set_title

• Set a brief description of the package components

Function Prototype

API

set_title(title: <string>)

Parameter Description

Parameter	Description
title	Component title string

Usage

xpack_component("LongPath")
     set_title("Enable Long Path")

set_description

• Set detailed description of package components

Function Prototype

API

set_description(description: <string>)

Parameter Description

Parameter	Description
description	Component description string

Usage

xpack_component("LongPath")
     set_description("Increases the maximum path length limit, up to 32,767 characters (before 256).")

set_default

• Set the default enabled state of package components

Function Prototype

API

set_default(default: <boolean>)

Parameter Description

Parameter	Description
default	Whether component is enabled by default (boolean)

Usage

Usually the package component is enabled by default, but we can also use this interface to disable this component by default. Only when the user chooses to check this component when installing the package will it be enabled for installation.

xpack_component("LongPath")
     set_default(false)
     set_title("Enable Long Path")

on_load

• Custom loading script

Function Prototype

API

on_load(script: <function (component)>)

Parameter Description

Parameter	Description
script	Load script function with component parameter

Usage

We can further flexibly configure package components in the on_load custom script field.

xpack_component("test")
     on_load(function (component)
         local package = component:package()
         -- TODO
     end)

before_installcmd

• Add script before component installation

Function Prototype

API

before_installcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	Before install script function with component and batchcmds parameters

Usage

It will not rewrite the entire installation script, but will add some custom installation scripts before the existing installation scripts are executed:

xpack_component("test")
     before_installcmd(function (component, batchcmds)
         batchcmds:mkdir(package:installdir("resources"))
         batchcmds:cp("src/assets/*.txt", package:installdir("resources"), {rootdir = "src"})
         batchcmds:mkdir(package:installdir("stub"))
     end)

It should be noted that the cp, mkdir and other commands added through batchcmds will not be executed immediately, but will only generate a command list. When the package is actually generated later, these commands will be translated into packaging commands.

It is exactly the same as xpack's before_installcmd. The only difference is that the installation script here will only be executed when this component is enabled.

on_installcmd

• Rewrite the installation script of the component

Function Prototype

API

on_installcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	Install script function with component and batchcmds parameters

Usage

Custom installation script for implementing specific component installation logic.

This will rewrite the entire component's installation script, similar to xpack's on_installcmd.

xpack_component("test")
     on_installcmd(function (component, batchcmds)
         -- TODO
     end)

after_installcmd

• Add script after component installation

Function Prototype

API

after_installcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	After install script function with component and batchcmds parameters

Usage

Custom script executed after component installation, used for post-processing operations.

After the component is installed, the script here will be executed, similar to xpack's after_installcmd.

xpack_component("test")
     after_installcmd(function (component, batchcmds)
         -- TODO
     end)

before_uninstallcmd

• Add script before component uninstallation

Function Prototype

API

before_uninstallcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	Before uninstall script function with component and batchcmds parameters

After the component is installed, the script here will be executed, similar to xpack's before_uninstallcmd.

xpack_component("test")
     before_uninstallcmd(function (component, batchcmds)
         -- TODO
     end)

on_uninstallcmd

• Rewrite the script for component uninstallation

Function Prototype

API

on_uninstallcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	Uninstall script function with component and batchcmds parameters

Usage

Custom uninstall script for implementing specific component uninstall logic.

This will rewrite the entire component's uninstall script, similar to xpack's on_uninstallcmd.

xpack_component("test")
     on_uninstallcmd(function (component, batchcmds)
         -- TODO
     end)

after_uninstallcmd

• Add script after component uninstallation

Function Prototype

API

after_uninstallcmd(script: <function (component, batchcmds)>)

Parameter Description

Parameter	Description
script	After uninstall script function with component and batchcmds parameters

Usage

Custom script executed after component uninstallation, used for post-processing operations.

After the component is uninstalled, the script here will be executed, similar to xpack's before_uninstallcmd.

xpack_component("test")
     before_uninstallcmd(function (component, batchcmds)
         -- TODO
     end)

add_sourcefiles

• Add component source file

Function Prototype

API

add_sourcefiles(files: <string|array>, ..., {
    prefixdir = <string>,
    rootdir = <string>,
    filename = <string>
})

Parameter Description

Parameter	Description
files	Source file pattern string or array
...	Variable parameters, can pass multiple file patterns
prefixdir	Installation prefix directory
rootdir	Source root directory
filename	Target filename

This is similar to xpack's add_sourcefiles, but here only when the component is enabled, these source files will be added to the installation package.

add_installfiles

• Add component binary installation file

Function Prototype

API

add_installfiles(files: <string|array>, ..., {
    prefixdir = <string>,
    rootdir = <string>,
    filename = <string>
})

Parameter Description

Parameter	Description
files	Install file pattern string or array
...	Variable parameters, can pass multiple file patterns
prefixdir	Installation prefix directory
rootdir	Source root directory
filename	Target filename

Usage

This is similar to xpack's add_installfiles, but here only the binaries are added to the installation package when the component is enabled.