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-
-
- TABLE OF CONTENTS
-
- cli.datatype/cli.datatype
-
-
- cli.datatype/cli.datatype cli.datatype/cli.datatype
-
- NAME
- cli.datatype - data type for launching extern programs and
- displaying the command's standard output
-
- FUNCTION
- This datatype launches an extern command and displays the standard
- output of that command. This is useful to view the contents of a
- archive like lha or tar archives without writing a complete datatype.
- The standard output is placed in a tempory file in "T:", because the
- datatypes.library can't handle pipes. From V39.2 the cli.datatype
- uses NewDTObject() for the tempory file. So it's possible to display
- files, which have special datatypes (e.g. Unix-Manual-Pages).
-
- PREFS
- The cli datatype is configured by a preference file "cli.prefs" in
- "PROGDIR:Prefs/Datatypes/" or "Env:Datatypes/".
- The file is parsed using ReadArgs() with the following template :
-
- "DATATYPE/A,STACK/N/K,SUFFIX/K,COMMAND/F/K/A"
-
- DATATYPE - specifies the datatype
- STACK - size of stack to use for the command
- SUFFIX - suffix to use for tempory file, thus the datatypes.library
- can determine the type of the file (e.g: ".0" for Man-Datatype)
- COMMAND - specifies the command to launch for that datatype, a "%s"
- in the command string is replaced by the real filename.
-
- EXAMPLE
- ; cli.datatype preference file
- Lha COMMAND=lha v %s
- Tar COMMAND=tar tvf %s
- NRoff STACK=50000 SUFFIX=.0 COMMAND=bin:groff -man -Tascii %s
-
- METHODS
- OM_NEW - create a new object and launch the extern command
-
- OM_DISPOSE - delete the object
-
- TAGS
- none
-
- NOTE
- With the used method of creating and handling of tempory output, it's
- also possible to create a special datatype for crunshed files through
- PowerPacker or XPK. All what have to be done is to create a tempory
- file and then call NewDTObject() on that. The source of the
- cli.datatype gives a the skeleton for such datatypes. Please feel
- free
- to implement XPK or PowerPacker datatypes. I don't do this.
-
- SEE ALSO
- text.datatype, ascii.datatype, datatypes.library
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-