120 lines
5.1 KiB
TeX
120 lines
5.1 KiB
TeX
\section{Standard Module \sectcode{ic}}
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\bimodindex{ic}
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\renewcommand{\indexsubitem}{(in module ic)}
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This module provides access to macintosh Internet Config package,
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which stores preferences for Internet programs such as mail address,
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default homepage, etc. Also, Internet Config contains an elaborate set
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of mappings from Macintosh creator/type codes to foreign filename
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extensions plus information on how to transfer files (binary, ascii,
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etc).
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There is a low-level companion module \code{icglue} which provides the
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basic ic access functionality. This low-level module is not
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documented, but the docstrings of the routines document the parameters
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and the routine names are the same as for the Pascal or C API to
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Internet Config, so the standard IC programmers documentation can be
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used if this module is needed.
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The \code{ic} module defines the \code{error} exception and symbolic
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names for all error codes IC can produce, see the source for details.
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The \code{ic} module defines the following functions:
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\begin{funcdesc}{IC}{\optional{signature, ic}}
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Create an internet config object. The signature is a 4-char creator
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code of the current application (default \code{'Pyth'}) which may
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influence some of ICs settings. The optional \var{ic} argument is a
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low-level \code{icinstance} created beforehand, this may be useful if
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you want to get preferences from a different config file, etc.
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\end{funcdesc}
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\begin{funcdesc}{launchurl}{url \optional{, hint}}
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\end{funcdesc}
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\begin{funcdesc}{parseurl}{data \optional{, start, end, hint}}
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\end{funcdesc}
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\begin{funcdesc}{mapfile}{file}
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\end{funcdesc}
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\begin{funcdesc}{maptypecreator}{type, creator \optional{, filename}}
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\end{funcdesc}
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\begin{funcdesc}{settypecreator}{file}
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These functions are ``shortcuts'' to the methods of the same name,
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described below.
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\end{funcdesc}
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\subsection{IC objects}
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IC objects have a mapping interface, hence to obtain the mail address
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you simply get \code{ic['MailAddress']}. Assignment also works, and
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changes the option in the configuration file.
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The module knows about various datatypes, and converts the internal IC
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representation to a ``logical'' python datastructure. Running the
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\code{ic} module standalone will run a test program that lists all
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keys and values in your IC database, this will have to server as
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documentation.
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If the module does not know how to represent the data it returns an
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instance of the \var{ICOpaqueData} type, with the raw data in its
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\var{data} attribute. Objects of this type are also acceptable values
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for assignment.
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Besides the dictionary interface IC objects have the following methods:
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\renewcommand{\indexsubitem}{(IC object attribute)}
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\begin{funcdesc}{launchurl}{url \optional{, hint}}
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Parse the given URL, lauch the correct application and pass it the
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URL. The optional \var{hint} can be a scheme name such as
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\code{mailto:}, in which case incomplete URLs are completed with this
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scheme (otherwise incomplete URLs are invalid).
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\end{funcdesc}
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\begin{funcdesc}{parseurl}{data \optional{, start, end, hint}}
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Find an URL somewhere in \var{data} and return start position, end
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position and the URL. The optional \var{start} and \var{end} can be
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used to limit the search, so for instance if a user clicks in a long
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textfield you can pass the whole textfield and the click-position in
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\var{start} and this routine will return the whole URL in which the
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user clicked. \var{Hint} is again an optional scheme used to complete
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incomplete URLs.
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\end{funcdesc}
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\begin{funcdesc}{mapfile}{file}
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Return the mapping entry for the given \var{file}, which can be passed
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as either a filename or an \var{FSSpec} object, and which need not
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exist.
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The mapping entry is returned as a tuple \code{(}\var{version},
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\var{type}, \var{creator}, \var{postcreator}, \var{flags},
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\var{extension}, \var{appname}, \var{postappname}, \var{mimetype},
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\var{entryname}\code{)}, where \var{version} is the entry version
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number, \var{type} is the 4-char filetype, \var{creator} is the 4-char
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creator type, \var{postcreator} is the 4-char creator code of an
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optional application to post-process the file after downloading,
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\var{flags} are various bits specifying whether to transfer in binary
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or ascii and such, \var{extension} is the filename extension for this
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file type, \var{appname} is the printable name of the application to
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which this file belongs, \var{postappname} is the name of the
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postprocessing application, \var{mimetype} is the MIME type of this
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file and \var{entryname} is the name of this entry.
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\end{funcdesc}
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\begin{funcdesc}{maptypecreator}{type, creator \optional{, filename}}
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Return the mapping entry for files with given 4-char \var{type} and
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\var{creator} codes. The optional \var{filename} may be specified to
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further help finding the correct entry (if the creator code is
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\code{'????'}, for instance).
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The mapping entry is returned in the same format as for \var{mapfile}.
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\end{funcdesc}
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\begin{funcdesc}{settypecreator}{file}
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Given an existing \var{file}, specified either as a filename or as an
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\var{FSSpec} record, set its creator and type correctly based on its
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extension. The finder is told about the change, so the finder icon
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will be updated quickly.
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\end{funcdesc}
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