BACKEND-SPEC(7)BACKEND-SPEC(7)NAME
backend-spec - interface between jw and its backends
DESCRIPTION jw(1) calls backends like backends/html to do the "real" conversion work. The backend gets all necessary data delivered via environment
variables ready to use.
This documentation describes those environment variables.
The backend is run in the directory where the output files are to be created. It should return 0 if there weren't any problem, and return a
positive value otherwise.
VARIABLES
SGML_FILE_NAME
The bare name of the source file
SGML_FILE
The full name and path of the source file
SGML_JADE
The name of the parser (usually Jade or OpenJade)
SGML_ARGUMENTS
The full argument-string for Jade or OpenJade
SGML_CATALOG_FILES
The list of catalog files needed by Jade or OpenJade
SGML_STYLESHEET
The style sheet to use
SGML_BASE_DIR
The base directory of the SGML system (default is /usr/share/sgml)
FILES SEE ALSO frontend-spec(7)AUTHORS
Jochem Huhmann <joh@revier.com>
12 September 2012 BACKEND-SPEC(7)
Check Out this Related Man Page
FRONTEND-SPEC(7)FRONTEND-SPEC(7)NAME
frontend-spec - interface between jw and its frontends
DESCRIPTION jw(1) calls frontends like frontends/docbook to get the informations specific to a given input format. The frontend knows which information
to return from the first command line parameter. It gets all necessary data via environment variables ready to use.
This document describes that command line parameter and those environment variables.
The frontend should return 0 if there weren't any problem, and return a positive value otherwise.
VARIABLES
$1
The command line parameter, specifying which information to return. It can take the following values:
centralized-catalog
The frontend must return the DTD-specific centralized catalog name. Centralized catalogs normally reside in /etc/sgml and
provide the location of all the catalog files useful for handling this input type (the catalog for the DTD, the catalog for
the stylesheets, the catalog for the entities, ...)
style-sheet
The frontend must return the filename of the style sheet to be used for this document type and with the chosen backend.
SGML_CATALOGS_DIR
The directory where the centralized catalogs reside. It is normally /etc/sgml.
(This variable is valid only while determining the centralized catalog to use.)
SGML_BASE_DIR
The base directory of the SGML system. It is normally /usr/share/sgml.
(This variable is valid only while determining the style sheet to use.)
SGML_FILE
The name of the file to convert.
(This variable is valid only while determining the centralized catalog to use.)
SGML_TYPE
The type of the backend to use, whether it produces output files to be displayed online or to be printed out. It can take the value
html or print.
(This variable is valid only while determining the style sheet to use).
SGML_STYLESHEETS
The desired custom stylesheet type, either none or default. If none, the frontend must return the file name of the style sheet pro-
vided by the system beneath the docbook-utils. If default, the frontend must return the custom stylesheet provided by the docbook-
utils.
(This variable is valid only while determining the style sheet to use).
SGML_XML
The metalanguage of the file to convert, either sgml or xml.
(This variable is valid only while determining the centralized catalog to use).
FILES SEE ALSO backend-spec(7)AUTHORS
Jochem Huhmann <joh@revier.com>
12 September 2012 FRONTEND-SPEC(7)
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