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authorBerke Viktor <bviktor@hexchat.org>2013-03-23 16:28:13 +0100
committerBerke Viktor <bviktor@hexchat.org>2013-03-23 16:28:13 +0100
commit96fe6bf2ca940f11f3779016974d1d52678d4303 (patch)
treeab1943f96a420b20d2d6a08eef7d0f218ef03ca0 /share/doc/python.md
parenta6d7cfab78299171178ce556a869560630129686 (diff)
Cleanup, docs are online now, these are either irrelevant or outdated
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-# HexChat Python Interface
-
-## Features
-
-Here are some of the features of the python plugin interface:
-
- * Comprehensive, consistent and straightforward API
- * Load, unload, reload, and autoload support
- * Per plugin independent interpreter state
- * Python interactive console
- * Python interactive command execution
- * Full thread support
- * Stdout and stderr redirected to HexChat console
- * Dynamic list management
- * Nice context treatment
- * Plugin preferences
-
-## Commands
-
-The following commands will be intercepted by the Python Plugin interface module, when it is loaded.
-
- * **/py load &lt;filename>:** Load module with given filename.
- * **/py unload &lt;filename|module name>:** Unload module with given filename, or module name.
- * **/py reload &lt;filename|module name>:** Reload module with given filename, or module name.
- * **/py list:** List Python modules loaded.
- * **/py exec &lt;command>:** Execute given Python command interactively. For example:
-
-<pre>
-	/py exec import xchat
-	/py exec print xchat.get_info('channel')
-</pre>
-
- * **/py console:** Open the Python interactive console in a query (>>python<<).
-Every message sent will be intercepted by the Python plugin interface,
-and interpreted interactively. Notice that the console and /py exec
-commands live in the same interpreter state.
-
- * **/py about:** Show some information about the Python plugin interface.
-
-
-## Autoloading modules
-
-If you want some module to be autoloaded together with the Python plugin
-interface (which usually loads at startup time), just make sure it has a
-`.py` extension and put it in your HexChat directory (`~/.config/hexchat/addons`, `%APPDATA%\\HexChat\\addons`).
-
-
-## Context theory
-
-Before starting to explain what the API offers, I'll do a short
-introduction about the HexChat context concept. Not because it's something
-hard to understand, but because you'll understand better the API
-explanations if you know what I'm talking about.
-
-You can think about a context as an HexChat channel, server, or query tab.
-Each of these tabs, has its own context, and is related to a given
-server and channel (queries are a special kind of channel).
-
-The *current* context is the one where HexChat passes control to the
-module. For example, when HexChat receives a command in a specific
-channel, and you have asked HexChat to tell you about this event, the
-current context will be set to this channel before your module is
-called.
-
-
-## Hello world
-
-Here is the traditional _hello world_ example.
-
-<pre>
-__module_name__ = "helloworld"
-__module_version__ = "1.0"
-__module_description__ = "Python module example"
-
-print "Hello world!"
-</pre>
-
-This module will print "Hello world!" in the HexChat console, and sleep
-forever until it's unloaded. It's a simple module, but already
-introduces some concepts. Notice how the module information is set. This
-information is obligatory, and will be shown when listing the loaded
-HexChat modules.
-
-
-## xchat module
-
-The xchat module is your passport to every HexChat functionality offered
-by the Python plugin interface. Here's a simple example:
-
-<pre>
-import xchat
-xchat.prnt("Hi everyone!")
-</pre>
-
-The following functions are available in the xchat module.
-
-
-### Generic functions
-
-
-#### xchat.prnt(string)
-
-This function will print string in the current context. It's mainly
-useful as a parameter to pass to some other function, since the usual
-print statement will have the same results. You have a usage example
-above.
-
-This function is badly named because `"print"` is a reserved keyword of the Python language.
-
-
-#### xchat.emit\_print(event\_name, \*args)
-
-This function will generate a *print event* with the given arguments. To
-check which events are available, and the number and meaning of
-arguments, have a look at the `Settings > Lists > Text Events` window.
-Here is one example:
-
-<pre>
-xchat.emit_print("Channel Message", "John", "Hi there", "@")
-</pre>
-
-
-#### xchat.command(string)
-
-Execute the given command in the current context. This has the same
-results as executing a command in the HexChat window, but notice that the
-`/` prefix is not used. Here is an example:
-
-<pre>
-xchat.command("server irc.openprojects.net")
-</pre>
-
-
-#### xchat.nickcmp(s1, s2)
-
-This function will do an RFC1459 compliant string comparing between `s1`
-and `s2`, and is useful to compare channels and nicknames. It returns an
-integer less than, equal to, or greater than zero if `s1` is found,
-respectively, to be less than, to match, or be greater than `s2`. For
-example:
-
-<pre>
-if xchat.nickcmp(nick, "mynick") == 0:
-    print "They are the same!"
-</pre>
-
-
-### Information retreiving functions
-
-
-#### xchat.get\_info(type)
-
-Retrieve the information specified by the `type` string in the current
-context. At the moment of this writing, the following information types
-are available to be queried:
-
- * **away:** Away reason or None if you are not away.
- * **channel:** Channel name of the current context.
- * **charset:** Charset in current context.
- * **configdir:** HexChat config directory e.g.: "~/.config/hexchat".
- * **event_name NAME:** Returns text event string for requested event.
- * **gtkwin_ptr:** Current Gtk Window.
- * **host:** Real hostname of the server you connected to.
- * **inputbox:** Contents of inputbox.
- * **network:** Current network name or None.
- * **nick:** Your current nick name.
- * **nickserv:** Current networks nickserv password or None.
- * **modes:** Current channel modes or None.
- * **server:** Current server name (what the server claims to be) or None if you are not connected.
- * **topic:** Current channel topic.
- * **win_status:** Returns status of window: 'active', 'hidden', or 'normal'.
- * **version:** HexChat version number.
-
-Example:
-
-<pre>
-if xchat.get_info("server") is None:
-    print "Not connected!"
-</pre>
-
-
-#### xchat.get\_prefs(name)
-
-Retrieve the HexChat setting information specified by the `name` string,
-as available by the `/set` command. For example:
-
-<pre>
-print "Current preferred nick:", xchat.get_prefs("irc_nick1")
-</pre>
-
-
-#### xchat.get\_list(type)
-
-With this function you may retrieve a list containing the selected
-information from the current context, like a DCC list, a channel list, a
-user list, etc. Each list item will have its attributes set dynamically
-depending on the information provided by the list type.
-
-The example below is a rewrite of the example provided with HexChat's
-plugin API documentation. It prints a list of every DCC transfer
-happening at the moment. Notice how similar the interface is to the C
-API provided by HexChat.
-
-<pre>
-list = xchat.get_list("dcc")
-if list:
-    print "--- DCC LIST ------------------"
-    print "File  To/From   KB/s   Position"
-    for i in list:
-        print "%6s %10s %.2f  %d" % (i.file, i.nick, i.cps/1024, i.pos)
-</pre>
-
-Below you will find what each list type has to offer.
-
-This information was taken from HexChat's plugin documentation. You may find any types not
-listed here, if they exist at all, in an updated HexChat documentation.
-Any list types accepted by HexChat should be dynamically accepted by the
-Python plugin interface.
-
-
-##### channels
-
-The channels list type gives you access to the channels, queries and
-their servers. The folloing attributes are available in each list item:
-
- * **channel:** Channel or query name.
- * **chantypes:** Channel types e.g. #!&.
- * **context:** A context object, giving access to that channel/server.
- * **id:** Unique server id.
- * **lag:** Latency in milliseconds.
- * **maxmodes:** Max modes per line.
- * **network:** Network name to which this channel belongs.
- * **nickprefixes:** Nickname prefixes e.g. @%+.
- * **nickmodes:** Nickname mode chars e.g. ov.
- * **queue:** Number of bytes in the send-queue.  
- * **server:** Server name to which this channel belongs.
- * **users:** Number of users in the channel.
- * **type:** Type of context.
-	* 1: Server
-	* 2: Channel
-	* 3: Dialog
-
- * **flags:** Bit field of flags:
-    * 0: Connected
-    * 1: Connecting
-    * 2: Away
-    * 3: End of MOTD (Login Complete)
-    * 4: Has WHOX
-    * 5: Has IDMSG
-    * 6: Join/Parts hidden
-    * 7: Unused
-    * 8: Beep on Message
-    * 9: Blink Tray
-    * 10: Blink Task Bar
-
-
-##### dcc
-
-The dcc list type gives you access to a list of DCC file transfers. The
-following attributes are available in each list item:
-
- * **address32:** Address of the remote user (ipv4 address, as an int).
- * **cps:** Bytes per second (speed).
- * **destfile:** Destination full pathname.
- * **file:** Filename.
- * **nick:** Nickname of person who the file is from/to.
- * **port:** TCP port number.
- * **pos:** Bytes sent/received.
- * **resume:** Point at which this file was resumed (or zero if it was not resumed).
- * **size:** File size in bytes.
- * **status:** DCC status:
-	* 0: queued
-	* 1: active
-	* 2: failed
-	* 3: done
-	* 4: connecting
-	* 5: aborted
- * **type:** DCC type:
-	* 0: send
-	* 1: receive
-	* 2: chatrecv
-	* 3: chatsend
-
-
-##### users
-
-The users list type gives you access to a list of users in the current
-channel. The following attributes are available in each list item:
-
- * **away:** Away status.
- * **lasttalk:** Last time the user was seen talking.
- * **host:** Host name in the form user@host (or None, if not known).
- * **nick:** Nick name.
- * **prefix:** Prefix character, .e.g: @ or +. Points to a single char.
- * **realname:** Real name.
- * **selected:** Selected status in the userlist.
-
-
-##### ignore
-
-The ignore list type gives you access to the current ignored list. The
-following attributes are available in each list item:
-
- * **mask:** Ignore mask (for example, "\*!\*@\*.aol.com").
- * **flags:** Bit field of flags:
-	* 0: private
-	* 1: notice
-	* 2: channel
-	* 3: ctcp
-	* 4: invite
-	* 5: unignore
-	* 6: nosave
-	* 7: dcc
-
-
-### Hook functions
-
-These functions allow one to hook into HexChat events.
-
-
-#### Priorities
-
-When a priority keyword parameter is accepted, it means that this
-callback may be hooked with five different priorities: PRI\_HIGHEST,
-PRI\_HIGH, PRI\_NORM, PRI\_LOW, and PRI\_LOWEST. The usage of these
-constants, which are available in the xchat module, will define the
-order in which your plugin will be called. Most of the time, you won't
-want to change its default value (PRI\_NORM).
-
-
-#### Parameters word and word_eol
-
-These parameters, when available in a callback, are lists of strings
-which contain the parameters the user entered for the particular
-command. For example, if you executed:
-
-<pre>
-/command NICK Hi there!
-</pre>
-
- * **word[0]** is `command`
- * **word[1]** is `NICK`
- * **word[2]** is `Hi`
- * **word[3]** is `there!`
- * **word\_eol[0]** is `command NICK Hi there!`
- * **word\_eol[1]** is `NICK Hi there!`
- * **word\_eol[2]** is `Hi there!`
- * **word\_eol[3]** is `there!`
-
-
-#### Parameter userdata
-
-The parameter userdata, if given, allows you to pass a custom object to
-your callback.
-
-#### Callback return constants (EAT\_*)
-
-When a callback is supposed to return one of the EAT\_\* macros, it is
-able control how HexChat will proceed after the callback returns. These
-are the available constants, and their meanings:
-
- * **EAT_PLUGIN:** Don't let any other plugin receive this event.
- * **EAT_XCHAT:** Don't let HexChat treat this event as usual.
- * **EAT_ALL:** Eat the event completely.
- * **EAT_NONE:** Let everything happen as usual.
-
-Returning `None` is the same as returning `EAT_NONE`.
-
-
-#### xchat.hook\_command(name, callback, userdata=None, priority=PRI\_NORM, help=None)
-
-This function allows you to hook into the name HexChat command. It means
-that everytime you type `/name ...`, `callback` will be called.
-Parameters `userdata` and `priority` have their meanings explained
-above, and the parameter help, if given, allows you to pass a help text
-which will be shown when `/help name` is executed. This function returns
-a hook handler which may be used in the `xchat.unhook()` function. For
-example:
-
-<pre>
-def onotice_cb(word, word_eol, userdata):
-    if len(word) < 2:
-        print "Second arg must be the message!"
-    else:
-        xchat.command("NOTICE @%s %s" % (xchat.get_info("channel"), word_eol[1]))
-    return xchat.EAT_ALL
-
-xchat.hook_command("ONOTICE", onotice_cb, help="/ONOTICE <message> Sends a notice to all ops")
-</pre>
-
-You may return one of `EAT_*` constants in the callback, to control
-HexChat's behavior, as explained above.
-
-
-#### xchat.hook\_print(name, callback, userdata=None, priority=PRI\_NORM)
-
-This function allows you to register a callback to trap any print
-events. The event names are available in the _Edit Event Texts_ window.
-Parameters `userdata` and `priority` have their meanings explained
-above. This function returns a hook handler which may be used in the
-`xchat.unhook()` function. For example:
-
-<pre>
-def youpart_cb(word, word_eol, userdata):
-    print "You have left channel", word[2]
-    return xchat.EAT_XCHAT # Don't let HexChat do its normal printing
-
-xchat.hook_print("You Part", youpart_cb)
-</pre>
-
-You may return one of `EAT_*` constants in the callback, to control
-HexChat's behavior, as explained above.
-
-
-#### xchat.hook\_server(name, callback, userdata=None, priority=PRI\_NORM)
-
-This function allows you to register a callback to be called when a
-certain server event occurs. You can use this to trap `PRIVMSG`,
-`NOTICE`, `PART`, a server numeric, etc. Parameters `userdata` and
-`priority` have their meanings explained above. This function returns a
-hook handler which may be used in the `xchat.unhook()` function. For
-example:
-
-<pre>
-def kick_cb(word, word_eol, userdata):
-    print "%s was kicked from %s (%s)" % (word[3], word[2], word_eol[4])
-    # Don't eat this event, let other plugins and HexChat see it too
-    return xchat.EAT_NONE
-
-xchat.hook_server("KICK", kick_cb)
-</pre>
-
-You may return one of `EAT_*` constants in the callback, to control
-HexChat's behavior, as explained above.
-
-
-#### xchat.hook\_timer(timeout, callback, userdata=None)
-
-This function allows you to register a callback to be called every
-timeout milliseconds. Parameters userdata and priority have their
-meanings explained above. This function returns a hook handler which may
-be used in the `xchat.unhook()` function. For example:
-
-<pre>
-myhook = None
-
-def stop_cb(word, word_eol, userdata):
-    global myhook
-    if myhook is not None:
-        xchat.unhook(myhook)
-        myhook = None
-        print "Timeout removed!"
-
-def timeout_cb(userdata):
-    print "Annoying message every 5 seconds! Type /STOP to stop it."
-    return 1 # Keep the timeout going
-
-myhook = xchat.hook_timer(5000, timeout_cb)
-xchat.hook_command("STOP", stop_cb)
-</pre>
-
-If you return a true value from the callback, the timer will be keeped,
-otherwise it is removed.
-
-
-#### xchat.hook\_unload(timeout, callback, userdata=None)
-
-This function allows you to register a callback to be called when the
-plugin is going to be unloaded. Parameters `userdata` and `priority`
-have their meanings explained above. This function returns a hook
-handler which may be used in the `xchat.unhook()` function. For example:
-
-<pre>
-def unload_cb(userdata):
-    print "We're being unloaded!"
-
-xchat.hook_unload(unload_cb)
-</pre>
-
-
-#### xchat.unhook(handler)
-
-Unhooks any hook registered with the hook functions above.
-
-
-### Plugin preferences
-
-You can use pluginpref to easily store and retrieve settings. This was added in the Python plugin version 0.9
-
-#### xchat.set\_pluginpref(name, value)
-
-If neccessary creates a .conf file in the HexChat config folder named addon\_python.conf and stores the value in it. Returns 1 on success, 0 on failure.
-
-> Note: Until the plugin uses different a conf file per script it's recommened to use 'PluginName-SettingName' to avoid conflicts.
-
-
-#### xchat.get\_pluginpref(name)
-
-This will return the value of the variable of that name. If there is none by this name it will return `None`. Numbers are always returned as Integers.
-
-
-#### xchat.del\_pluginpref(name)
-
-Deletes the specified variable. Returns 1 on success (or never existing), 0 on failure.
-
-
-#### xchat.list\_pluginpref()
-
-Returns a list of all currently set preferences.
-
-
-### Context handling
-
-Below you will find information about how to work with contexts.
-
-
-#### Context objects
-
-As explained in the Context theory session above, contexts give access
-to a specific channel/query/server tab of HexChat. Every function
-available in the xchat module will be evaluated in the current context,
-which will be specified by HexChat itself before passing control to the
-module. Sometimes you may want to work in a specific context, and that's
-where context objects come into play.
-
-You may create a context object using the `xchat.get_context()` or
-`xchat.find_context()`, functions as explained below, or trough the
-`xchat.get_list()` function, as explained in its respective session.
-
-Each context object offers the following methods:
-
- * **context.set():** Changes the current context to be the one represented by this context object.
- * **context.prnt(string):** Does the same as the xchat.prnt() function, but in the given context.
- * **context.emit\_print(event\_name, \*args):** Does the same as the emit\_print() function, but in the given context.
- * **context.command(string):** Does the same as the xchat.command() function, but in the given context.
- * **context.get\_info(type):** Does the same as the xchat.get\_info() function, but in the given context.
- * **context.get\_list(type):** Does the same as the xchat.get\_list() function, but in the given context.
-
-
-#### xchat.get\_context()
-
-Returns a context object corresponding the the current context.
-
-#### xchat.find\_context(server=None, channel=None)
-
-Finds a context based on a channel and servername. If `server` is
-`None`, it finds any channel (or query) by the given name. If `channel`
-is `None`, it finds the front-most tab/window of the given server. For
-example:
-
-<pre>
-cnc = xchat.find_context(channel='#conectiva')
-cnc.command('whois niemeyer')
-</pre>
-
-***
-
-Original Author: Gustavo Niemeyer [gustavo@niemeyer.net](mailto:gustavo@niemeyer.net)
-
-For purty html: `pandoc --toc python.md -s --highlight-style haddock -o python.html`