157 lines
5.7 KiB
Plaintext
157 lines
5.7 KiB
Plaintext
<!-- $XConsortium: Translat.sgm /main/5 1996/09/08 20:16:44 rws $ -->
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<!-- (c) Copyright 1995 Digital Equipment Corporation. -->
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<!-- (c) Copyright 1995 Hewlett-Packard Company. -->
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<!-- (c) Copyright 1995 International Business Machines Corp. -->
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<!-- (c) Copyright 1995 Sun Microsystems, Inc. -->
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<!-- (c) Copyright 1995 Novell, Inc. -->
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<!-- (c) Copyright 1995 FUJITSU LIMITED. -->
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<!-- (c) Copyright 1995 Hitachi. -->
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<![ %CDE.C.CDE; [<RefEntry Id="CDEMX.XCDI.MAN317.rsml.1">]]>
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<![ %CDE.C.XO; [<RefEntry Id="XCDI.MAN317.rsml.1">]]>
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<RefMeta>
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<RefEntryTitle>Translate</RefEntryTitle>
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<ManVolNum>special file</ManVolNum>
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</RefMeta>
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<RefNameDiv>
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<RefName><Symbol Role="Message">Translate</Symbol></RefName>
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<RefPurpose>translate a document from one media type to another
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</RefPurpose>
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</RefNameDiv>
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<!-- $XConsortium: Translat.sgm /main/5 1996/09/08 20:16:44 rws $-->
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<!-- CDE Common Source Format, Version 1.0.0-->
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<!-- (c) Copyright 1993, 1994, 1995 Hewlett-Packard Company-->
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<!-- (c) Copyright 1993, 1994, 1995 International Business Machines Corp.-->
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<!-- (c) Copyright 1993, 1994, 1995 Sun Microsystems, Inc.-->
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<!-- (c) Copyright 1993, 1994, 1995 Novell, Inc.-->
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<RefSynopsisDiv>
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<Synopsis>[<Symbol Role="Variable">file</Symbol>] Translate(in <Emphasis>mediaType contents</Emphasis>,
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out <Emphasis>mediaType output</Emphasis>,
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in boolean <Emphasis>inquisitive</Emphasis>,
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in boolean <Emphasis>covert</Emphasis>
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[in messageID <Emphasis>counterfoil</Emphasis>]);
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</Synopsis>
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</RefSynopsisDiv>
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<RefSect1>
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<Title>DESCRIPTION</Title>
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<Para>The
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<Symbol Role="Message">Translate</Symbol> request causes the handler to translate a document from one media type
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to another and return the translation.
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The translation must be the best possible representation of the document
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in the target media type,
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even if the resulting representation cannot be exactly translated
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back into the original document.
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</Para>
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<Para>The
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<Emphasis>contents</Emphasis> argument
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is the contents of the document.
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If this argument is unset
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(in other words, has a value of
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<Literal>(char *)0</Literal>), then the contents of the document are in
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the file named in the message's
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<Symbol Role="Variable">file</Symbol> attribute.
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The data type
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(<Emphasis>mediaType</Emphasis>) of the
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<Emphasis>contents</Emphasis> argument should be
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<Literal>string</Literal>, unless nulls are valid in the given media type,
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in which case the data type must be
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<Literal>bytes</Literal>.</Para>
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<Para>The
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<Emphasis>output</Emphasis> argument is the translation of the document.
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</Para>
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<Para>The
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<Emphasis>inquisitive</Emphasis> argument is a
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<Literal>boolean</Literal> value
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indicating whether the handler is allowed to block on user input
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while carrying out the request.
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However, even if
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<Emphasis>inquisitive</Emphasis> is True, the handler is not required to seek such input.
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</Para>
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<Para>The
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<Emphasis>covert</Emphasis> argument is a
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<Literal>boolean</Literal> value indicating whether the handler may make itself apparent to the user
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as it carries out the request.
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If False, the recipient need not make itself apparent.
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</Para>
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<Para>If both the
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<Emphasis>inquisitive</Emphasis> argument and the
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<Emphasis>covert</Emphasis> argument are True, the recipient should attempt to limit its presence
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to the minimum needed to receive any user input desired;
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for example, through iconification.
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</Para>
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<Para>The
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<Emphasis>counterfoil</Emphasis> argument is a unique string created by the message sender
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to give both sender and receiver a way to refer to this request
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in other correspondence.
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Typically this string is created by concatenating a process ID and a counter.
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This argument should be included
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if the sender anticipates a need to communicate with the handler
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about this request before it is completed; for example, to cancel it.
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When this argument is included,
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and the handler determines that an immediate reply is not possible,
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the handler must immediately send at least one
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<Symbol Role="Message">Status</Symbol> notice point-to-point back to the requester,
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so as to identify itself to the requester.
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</Para>
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</RefSect1>
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<RefSect1>
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<Title>APPLICATION USAGE</Title>
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<Para>To provide a speech-to-text service, a tool can handle requests of the form:
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</Para>
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<InformalExample Remap="indent">
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<ProgramListing>Translate(in Sun_Audio <Emphasis>contents</Emphasis>,
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out ISO_Latin_1 <Emphasis>output</Emphasis>,
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...);
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</ProgramListing>
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</InformalExample>
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<Para>To provide an OCR (optical character recognition) service,
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a tool can handle requests of the form:
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</Para>
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<InformalExample Remap="indent">
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<ProgramListing>Translate(in GIF <Emphasis>contents</Emphasis>,
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out ISO_Latin_1 <Emphasis>output</Emphasis>,
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...);
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</ProgramListing>
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</InformalExample>
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</RefSect1>
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<RefSect1>
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<Title>ERRORS</Title>
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<Para>The ToolTalk service may return one of the following errors
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in processing the
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<Symbol Role="Message">Translate</Symbol> request:
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</Para>
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<VariableList>
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<VarListEntry>
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<Term>TT_DESKTOP_ENOENT</Term>
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<ListItem>
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<Para>The file that was alleged to contain the document does not exist.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_DESKTOP_ENODATA</Term>
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<ListItem>
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<Para>The in-mode
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<Emphasis>contents</Emphasis> argument had no value and the
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<Symbol Role="Variable">file</Symbol> attribute
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of the message was not set.
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</Para>
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</ListItem>
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</VarListEntry>
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<VarListEntry>
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<Term>TT_MEDIA_ERR_FORMAT</Term>
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<ListItem>
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<Para>The document is not a valid instance of the media type.
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</Para>
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</ListItem>
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</VarListEntry>
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</VariableList>
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</RefSect1>
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<RefSect1>
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<Title>SEE ALSO</Title>
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<Para><Emphasis>Intro</Emphasis>, <Emphasis>Abstract</Emphasis>, <Emphasis>Interpret</Emphasis>, <Symbol Role="Message">Status</Symbol> requests.
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</Para>
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</RefSect1>
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</RefEntry>
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<!--fickle 1.12 mancsf-to-docbook 1.2 08/07/95 23:18:47-->
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