34.1. msilib — 读写 Microsoft Installer 文件

源代码: Lib/msilib/__init__.py


msilib 支持创建 Microsoft 安装程序 ( .msi ) 文件。因为这些文件经常包含嵌入式 cabinet (柜子) 文件 ( .cab ),它还暴露 API 以创建 CAB 文件。支持读取 .cab 文件目前未实现;读取支持 .msi 数据库是可能的。

此包旨在提供完整访问对所有表格在 .msi 文件,因此,它是相当低级的 API。此包的 2 个首要应用程序是 distutils command bdist_msi ,和 Python 安装程序包本身的创建 (虽然目前使用的是不同版本的 msilib ).

包内容大致可分为 4 部分:低级 CAB 例程、低级 MSI 例程、高级 MSI 例程及标准表格结构。

msilib. FCICreate ( cabname , 文件 )

创建新 CAB 文件名为 cabname . 文件 must be a list of tuples, each containing the name of the file on disk, and the name of the file inside the CAB file.

The files are added to the CAB file in the order they appear in the list. All files are added into a single CAB file, using the MSZIP compression algorithm.

Callbacks to Python for the various steps of MSI creation are currently not exposed.

msilib. UuidCreate ( )

Return the string representation of a new unique identifier. This wraps the Windows API functions UuidCreate() and UuidToString() .

msilib. OpenDatabase ( path , persist )

返回新的数据库对象通过调用 MsiOpenDatabase。 path is the file name of the MSI file; persist can be one of the constants MSIDBOPEN_CREATEDIRECT , MSIDBOPEN_CREATE , MSIDBOPEN_DIRECT , MSIDBOPEN_READONLY ,或 MSIDBOPEN_TRANSACT , and may include the flag MSIDBOPEN_PATCHFILE . See the Microsoft documentation for the meaning of these flags; depending on the flags, an existing database is opened, or a new one created.

msilib. CreateRecord ( count )

Return a new record object by calling MSICreateRecord() . count is the number of fields of the record.

msilib. init_database ( name , schema , ProductName , ProductCode , ProductVersion , Manufacturer )

Create and return a new database name , initialize it with schema , and set the properties ProductName , ProductCode , ProductVersion ,和 Manufacturer .

schema must be a module object containing tables and _Validation_records attributes; typically, msilib.schema should be used.

The database will contain just the schema and the validation records when this function returns.

msilib. add_data ( database , table , records )

添加所有 records to the table named table in database .

table argument must be one of the predefined tables in the MSI schema, e.g. 'Feature' , 'File' , 'Component' , 'Dialog' , 'Control' ,等。

records should be a list of tuples, each one containing all fields of a record according to the schema of the table. For optional fields, None can be passed.

Field values can be ints, strings, or instances of the Binary class.

class msilib. Binary ( filename )

Represents entries in the Binary table; inserting such an object using add_data() reads the file named filename into the table.

msilib. add_tables ( database , 模块 )

添加所有表格内容从 模块 to database . 模块 must contain an attribute tables listing all tables for which content should be added, and one attribute per table that has the actual content.

这通常用于安装序列表格。

msilib. add_stream ( database , name , path )

添加文件 path into the _Stream table of database , with the stream name name .

msilib. gen_uuid ( )

Return a new UUID, in the format that MSI typically requires (i.e. in curly braces, and with all hexdigits in upper-case).

34.1.1. 数据库对象

Database. OpenView ( sql )

返回视图对象,通过调用 MSIDatabaseOpenView() . sql 是要执行的 SQL 语句。

Database. Commit ( )

Commit the changes pending in the current transaction, by calling MSIDatabaseCommit() .

Database. GetSummaryInformation ( count )

Return a new summary information object, by calling MsiGetSummaryInformation() . count is the maximum number of updated values.

34.1.2. 视图对象

View. Execute ( params )

执行视图 SQL 查询,透过 MSIViewExecute() 。若 params 不是 None , it is a record describing actual values of the parameter tokens in the query.

View. GetColumnInfo ( kind )

Return a record describing the columns of the view, through calling MsiViewGetColumnInfo() . kind 可以是 MSICOLINFO_NAMES or MSICOLINFO_TYPES .

View. Fetch ( )

Return a result record of the query, through calling MsiViewFetch() .

View. 修改 ( kind , data )

修改视图,通过调用 MsiViewModify() . kind can be one of MSIMODIFY_SEEK , MSIMODIFY_REFRESH , MSIMODIFY_INSERT , MSIMODIFY_UPDATE , MSIMODIFY_ASSIGN , MSIMODIFY_REPLACE , MSIMODIFY_MERGE , MSIMODIFY_DELETE , MSIMODIFY_INSERT_TEMPORARY , MSIMODIFY_VALIDATE , MSIMODIFY_VALIDATE_NEW , MSIMODIFY_VALIDATE_FIELD ,或 MSIMODIFY_VALIDATE_DELETE .

data 必须是描述新数据的记录。

View. Close ( )

关闭视图,透过 MsiViewClose() .

34.1.3. 摘要信息对象

SummaryInformation. GetProperty ( field )

Return a property of the summary, through MsiSummaryInfoGetProperty() . field is the name of the property, and can be one of the constants PID_CODEPAGE , PID_TITLE , PID_SUBJECT , PID_AUTHOR , PID_KEYWORDS , PID_COMMENTS , PID_TEMPLATE , PID_LASTAUTHOR , PID_REVNUMBER , PID_LASTPRINTED , PID_CREATE_DTM , PID_LASTSAVE_DTM , PID_PAGECOUNT , PID_WORDCOUNT , PID_CHARCOUNT , PID_APPNAME ,或 PID_SECURITY .

SummaryInformation. GetPropertyCount ( )

返回汇总特性数,透过 MsiSummaryInfoGetPropertyCount() .

SummaryInformation. SetProperty ( field , value )

设置特性透过 MsiSummaryInfoSetProperty() . field can have the same values as in GetProperty() , value is the new value of the property. Possible value types are integer and string.

SummaryInformation. Persist ( )

Write the modified properties to the summary information stream, using MsiSummaryInfoPersist() .

34.1.4. 记录对象

Record. GetFieldCount ( )

返回记录字段数,透过 MsiRecordGetFieldCount() .

Record. GetInteger ( field )

Return the value of field as an integer where possible. field must be an integer.

Record. GetString ( field )

Return the value of field as a string where possible. field must be an integer.

Record. SetString ( field , value )

Set field to value through MsiRecordSetString() . field must be an integer; value a string.

Record. SetStream ( field , value )

Set field to the contents of the file named value , through MsiRecordSetStream() . field must be an integer; value a string.

Record. SetInteger ( field , value )

Set field to value through MsiRecordSetInteger() . Both field and value must be an integer.

Record. ClearData ( )

Set all fields of the record to 0, through MsiRecordClearData() .

34.1.5. 错误

All wrappers around MSI functions raise MSIError ; the string inside the exception will contain more detail.

34.1.6. CAB 对象

class msilib. CAB ( name )

CAB represents a CAB file. During MSI construction, files will be added simultaneously to the 文件 table, and to a CAB file. Then, when all files have been added, the CAB file can be written, then added to the MSI file.

name is the name of the CAB file in the MSI file.

append ( full , file , logical )

Add the file with the pathname full to the CAB file, under the name logical . If there is already a file named logical , a new file name is created.

Return the index of the file in the CAB file, and the new name of the file inside the CAB file.

commit ( database )

Generate a CAB file, add it as a stream to the MSI file, put it into the Media table, and remove the generated file from the disk.

34.1.7. 目录对象

class msilib. Directory ( database , cab , basedir , physical , logical , default [ , componentflags ] )

Create a new directory in the Directory table. There is a current component at each point in time for the directory, which is either explicitly created through start_component() , or implicitly when files are added for the first time. Files are added into the current component, and into the cab file. To create a directory, a base directory object needs to be specified (can be None ), the path to the physical directory, and a logical directory name. default specifies the DefaultDir slot in the directory table. componentflags specifies the default flags that new components get.

start_component ( component=None , feature=None , flags=None , keyfile=None , uuid=None )

Add an entry to the Component table, and make this component the current component for this directory. If no component name is given, the directory name is used. If no feature is given, the current feature is used. If no flags are given, the directory’s default flags are used. If no keyfile is given, the KeyPath is left null in the Component table.

add_file ( file , src=None , version=None , language=None )

Add a file to the current component of the directory, starting a new one if there is no current component. By default, the file name in the source and the file table will be identical. If the src file is specified, it is interpreted relative to the current directory. Optionally, a version language can be specified for the entry in the File table.

glob ( pattern , exclude=None )

Add a list of files to the current component as specified in the glob pattern. Individual files can be excluded in the exclude list.

remove_pyc ( )

移除 .pyc 文件当卸载时。

34.1.8. 特征

class msilib. Feature ( db , id , title , desc , display , level=1 , parent=None , directory=None , attributes=0 )

把新记录添加到 Feature table, using the values id , parent.id , title , desc , display , level , directory ,和 attributes . The resulting feature object can be passed to the start_component() 方法的 Directory .

set_current ( )

Make this feature the current feature of msilib . New components are automatically added to the default feature, unless a feature is explicitly specified.

另请参阅

特征表格

34.1.9. GUI 类

msilib provides several classes that wrap the GUI tables in an MSI database. However, no standard user interface is provided; use bdist_msi to create MSI files with a user-interface for installing Python packages.

class msilib. Control ( dlg , name )

Base class of the dialog controls. dlg is the dialog object the control belongs to, and name is the control’s name.

event ( event , argument , condition=1 , ordering=None )

Make an entry into the ControlEvent table for this control.

映射 ( event , 属性 )

Make an entry into the EventMapping table for this control.

condition ( action , condition )

Make an entry into the ControlCondition table for this control.

class msilib. RadioButtonGroup ( dlg , name , property )

Create a radio button control named name . property is the installer property that gets set when a radio button is selected.

add ( name , x , y , width , height , text , value=None )

Add a radio button named name to the group, at the coordinates x , y , width , height , and with the label text 。若 value is None , it defaults to name .

class msilib. Dialog ( db , name , x , y , w , h , attr , title , first , default , cancel )

返回新 Dialog object. An entry in the Dialog table is made, with the specified coordinates, dialog attributes, title, name of the first, default, and cancel controls.

control ( name , type , x , y , width , height , attributes , property , text , control_next , help )

返回新 Control object. An entry in the Control table is made with the specified parameters.

This is a generic method; for specific types, specialized methods are provided.

text ( name , x , y , width , height , attributes , text )

添加并返回 Text 控件。

bitmap ( name , x , y , width , height , text )

添加并返回 Bitmap 控件。

line ( name , x , y , width , height )

添加并返回 Line 控件。

pushbutton ( name , x , y , width , height , attributes , text , next_control )

添加并返回 PushButton 控件。

radiogroup ( name , x , y , width , height , attributes , property , text , next_control )

添加并返回 RadioButtonGroup 控件。

checkbox ( name , x , y , width , height , attributes , property , text , next_control )

添加并返回 CheckBox 控件。

34.1.10. 预计算表

msilib provides a few subpackages that contain only schema and table definitions. Currently, these definitions are based on MSI version 2.0.

msilib. schema

This is the standard MSI schema for MSI 2.0, with the tables variable providing a list of table definitions, and _Validation_records providing the data for MSI validation.

msilib. sequence

This module contains table contents for the standard sequence tables: AdminExecuteSequence , AdminUISequence , AdvtExecuteSequence , InstallExecuteSequence ,和 InstallUISequence .

msilib. text

This module contains definitions for the UIText and ActionText tables, for the standard installer actions.