Changes between Version 1 and Version 2 of WikiMacros


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Timestamp:
08/27/15 23:20:06 (3 years ago)
Author:
trac
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  • WikiMacros

    v1 v2  
    1 =  Wiki マクロ =
    2 Wiki マクロとは、 Python で書かれた 'カスタム関数' によって Trac の Wiki エンジンを拡張するプラグインです。 WikiFormatting エンジンが利用可能なあらゆるコンテキストにおいて、マクロを使用することによって、動的な HTML データが挿入されます。
     1= Trac Macros
    32
    4 もう 1 種類のマクロは WikiProcessors です。これは通常、Wiki以外のマークアップ形式と表示を取り扱うために使用し、多くは、 (ソースコードハイライトのような) より大きいブロックに使用します。
     3[[PageOutline]]
    54
    6 == マクロの利用 ==
    7 マクロ呼び出しは、二つの ''角括弧 (square brackets) '' で括られた箇所です。 Python 関数のように、マクロは引数を取ることができ、括弧 (parenthesis) の中に、カンマで区切ったリストで表記します。
     5Trac macros are plugins to extend the Trac engine with custom 'functions' written in Python. A macro inserts dynamic HTML data in any context supporting WikiFormatting. Its syntax is `[[macro-name(optional-arguments)]]`.
    86
    9 === 利用例 ===
     7The WikiProcessors are another kind of macros. They typically deal with alternate markup formats and transformation of larger "blocks" of information, like source code highlighting. They are used for processing the multiline `{{{#!wiki-processor-name ... }}}` blocks.
    108
    11 {{{
    12  [[Timestamp]]
     9== Using Macros
     10
     11Macro calls are enclosed in two ''square brackets'' `[[..]]`. Like Python functions, macros can also have arguments, a comma separated list within parentheses `[[..(,)]]`.
     12
     13=== Getting Detailed Help
     14
     15The list of available macros and the full help can be obtained using the !MacroList macro, as seen [#AvailableMacros below].
     16
     17A brief list can be obtained via `[[MacroList(*)]]` or `[[?]]`.
     18
     19Detailed help on a specific macro can be obtained by passing it as an argument to !MacroList, e.g. `[[MacroList(MacroList)]]`, or, more conveniently, by appending a question mark (`?`) to the macro's name, like in `[[MacroList?]]`.
     20
     21=== Example
     22
     23A list of the 3 most recently changed wiki pages starting with 'Trac':
     24
     25||= Wiki Markup =||= Display =||
     26{{{#!td
     27  {{{
     28  [[RecentChanges(Trac,3)]]
     29  }}}
    1330}}}
    14 は、以下のように表示されます:
    15  [[Timestamp]]
     31{{{#!td style="padding-left: 2em;"
     32[[RecentChanges(Trac,3)]]
     33}}}
     34|-----------------------------------
     35{{{#!td
     36  {{{
     37  [[RecentChanges?(Trac,3)]]
     38  }}}
     39}}}
     40{{{#!td style="padding-left: 2em;"
     41[[RecentChanges?(Trac,3)]]
     42}}}
     43|-----------------------------------
     44{{{#!td
     45  {{{
     46  [[?]]
     47  }}}
     48}}}
     49{{{#!td style="padding-left: 2em"
     50{{{#!html
     51<div style="font-size: 80%" class="trac-macrolist">
     52<h3><code>[[Image]]</code></h3>Embed an image in wiki-formatted text.
    1653
    17 {{{
    18  [[HelloWorld(Testing)]]
     54The first argument is the file …
     55<h3><code>[[InterTrac]]</code></h3>Provide a list of known <a class="wiki" href="/wiki/InterTrac">InterTrac</a> prefixes.
     56<h3><code>[[InterWiki]]</code></h3>Provide a description list for the known <a class="wiki" href="/wiki/InterWiki">InterWiki</a> prefixes.
     57<h3><code>[[KnownMimeTypes]]</code></h3>List all known mime-types which can be used as <a class="wiki" href="/wiki/WikiProcessors">WikiProcessors</a>.
     58Can be …</div>
    1959}}}
    20 は、以下のように表示されます:
    21  [[HelloWorld(Testing)]]
     60etc.
     61}}}
    2262
    23 == マクロ一覧 ==
     63== Available Macros
    2464
    25 ''Note: 以下に示すリストはマクロドキュメントを含むものだけです。 `-OO` による最適化や、 [wiki:TracModPython mod_python] での `PythonOptimize` オプションが設定されていると表示されません。''
     65''Note that the following list will only contain the macro documentation if you've not enabled `-OO` optimizations, or not set the `PythonOptimize` option for [wiki:TracModPython mod_python].''
    2666
    2767[[MacroList]]
    2868
    29 == Macros from around the world ==
     69== Macros from around the world
    3070
    31 The [http://trac-hacks.org/ Trac Hacks] site provides a wide collection of macros and other Trac [TracPlugins plugins] contributed by the Trac community. If you're looking for new macros, or have written one that you'd like to share with the world, please don't hesitate to visit that site.
     71The [http://trac-hacks.org/ Trac Hacks] site provides a wide collection of macros and other Trac [TracPlugins plugins] contributed by the Trac community. If you are looking for new macros, or have written one that you would like to share with the world, don't hesitate to visit that site.
    3272
    33 == カスタムマクロを開発する ==
    34 マクロは、 Trac 自身と同じように [http://www.python.org/ Python programming language] で書かれています。とてもシンプルなモジュールで、たった一つの `execute()` 関数だけを持ちます。マクロの識別はファイル名で行います。 Trac は、呼び出されたマクロが返却したデータをマクロが呼び出された Wiki ページの HTML に挿入して表示を行います。
     73== Developing Custom Macros
    3574
    36 最も簡単なマクロの例です:
     75Macros, like Trac itself, are written in the [http://python.org/ Python programming language] and are developed as part of TracPlugins.
     76
     77For more information about developing macros, see the [trac:TracDev development resources] on the main project site.
     78
     79Here are 2 simple examples showing how to create a Macro. Also, have a look at [trac:source:tags/trac-1.0.2/sample-plugins/Timestamp.py Timestamp.py] for an example that shows the difference between old style and new style macros and at the [trac:source:tags/trac-0.11/wiki-macros/README macros/README] which provides a little more insight about the transition.
     80
     81=== Macro without arguments
     82
     83To test the following code, you should saved it in a `timestamp_sample.py` file located in the TracEnvironment's `plugins/` directory.
    3784{{{
    3885#!python
    39 # MyMacro.py -- The world's simplest macro
     86from datetime import datetime
     87# Note: since Trac 0.11, datetime objects are used internally
    4088
    41 def execute(hdf, args, env):
    42     return "Hello World called with args: %s" % args
     89from genshi.builder import tag
     90
     91from trac.util.datefmt import format_datetime, utc
     92from trac.wiki.macros import WikiMacroBase
     93
     94class TimeStampMacro(WikiMacroBase):
     95    """Inserts the current time (in seconds) into the wiki page."""
     96
     97    revision = "$Rev$"
     98    url = "$URL$"
     99
     100    def expand_macro(self, formatter, name, text):
     101        t = datetime.now(utc)
     102        return tag.strong(format_datetime(t, '%c'))
    43103}}}
    44104
    45 Environment (`env`) オブジェクトを使用することも出来ます。この例では、コンフィグレーションとデータベースにアクセスしています:
     105=== Macro with arguments
     106
     107To test the following code, you should save it in a `helloworld_sample.py` file located in the TracEnvironment's `plugins/` directory.
    46108{{{
    47109#!python
    48 def execute(hdf, txt, env):
    49     return env.config.get('trac', 'repository_dir')
     110from genshi.core import Markup
     111
     112from trac.wiki.macros import WikiMacroBase
     113
     114class HelloWorldMacro(WikiMacroBase):
     115    """Simple HelloWorld macro.
     116
     117    Note that the name of the class is meaningful:
     118     - it must end with "Macro"
     119     - what comes before "Macro" ends up being the macro name
     120
     121    The documentation of the class (i.e. what you're reading)
     122    will become the documentation of the macro, as shown by
     123    the !MacroList macro (usually used in the WikiMacros page).
     124    """
     125
     126    revision = "$Rev$"
     127    url = "$URL$"
     128
     129    def expand_macro(self, formatter, name, text, args):
     130        """Return some output that will be displayed in the Wiki content.
     131
     132        `name` is the actual name of the macro (no surprise, here it'll be
     133        `'HelloWorld'`),
     134        `text` is the text enclosed in parenthesis at the call of the macro.
     135          Note that if there are ''no'' parenthesis (like in, e.g.
     136          [[HelloWorld]]), then `text` is `None`.
     137        `args` are the arguments passed when HelloWorld is called using a
     138        `#!HelloWorld` code block.
     139        """
     140        return 'Hello World, text = %s, args = %s' % \
     141            (Markup.escape(text), Markup.escape(repr(args)))
     142
    50143}}}
    51144
    52 Note: バージョン 0.9 以降、 Wiki マクロは TracPlugins でも書くことが出来るようになりました。これによって、 HTTP request へのダイレクトアクセスなど、 "古い" マクロでは実現できなかったことが出来るようになりました。
     145Note that `expand_macro` optionally takes a 4^th^ parameter ''`args`''. When the macro is called as a [WikiProcessors WikiProcessor], it's also possible to pass `key=value` [WikiProcessors#UsingProcessors processor parameters]. If given, those are stored in a dictionary and passed in this extra `args` parameter. On the contrary, when called as a macro, `args` is  `None`. (''since 0.12'').
    53146
    54 マクロ開発についての詳しい情報は、プロジェクトメインサイトの [http://trac.edgewall.org/wiki/TracDev 開発リソース] を参照してください。
     147For example, when writing:
     148{{{
     149{{{#!HelloWorld style="polite" -silent verbose
     150<Hello World!>
     151}}}
    55152
    56 ----
    57 See also:  WikiProcessors, WikiFormatting, TracGuide
     153{{{#!HelloWorld
     154<Hello World!>
     155}}}
     156
     157[[HelloWorld(<Hello World!>)]]
     158}}}
     159One should get:
     160{{{
     161Hello World, text = <Hello World!> , args = {'style': u'polite', 'silent': False, 'verbose': True}
     162Hello World, text = <Hello World!> , args = {}
     163Hello World, text = <Hello World!> , args = None
     164}}}
     165
     166Note that the return value of `expand_macro` is '''not''' HTML escaped. Depending on the expected result, you should escape it by yourself (using `return Markup.escape(result)`) or, if this is indeed HTML, wrap it in a Markup object (`return Markup(result)`) with `Markup` coming from Genshi, (`from genshi.core import Markup`). 
     167
     168You can also recursively use a wiki Formatter (`from trac.wiki import Formatter`) to process the `text` as wiki markup:
     169
     170{{{
     171#!python
     172from genshi.core import Markup
     173from trac.wiki.macros import WikiMacroBase
     174from trac.wiki import Formatter
     175import StringIO
     176
     177class HelloWorldMacro(WikiMacroBase):
     178    def expand_macro(self, formatter, name, text, args):
     179        text = "whatever '''wiki''' markup you want, even containing other macros"
     180        # Convert Wiki markup to HTML, new style
     181        out = StringIO.StringIO()
     182        Formatter(self.env, formatter.context).format(text, out)
     183        return Markup(out.getvalue())
     184}}}