ONSGMLS(1)                         Reference                        ONSGMLS(1)

       onsgmls - An SGML/XML parser and validator

       onsgmls [-BCdeghlnpRrsuvx] [-alinktype] [-Aarchitecture] [-bbctf]
               [-csysid...] [-Ddirectory] [-Emax_errors] [-ffile] [-iname]
               [-ooutput_option...] [-tfile] [-wwarning_type...] [sysid...]

       onsgmls parses and validates the SGML document whose document entity is
       specified by the system identifiers [sysid...]  and prints on the
       standard output a simple text representation of its Element Structure
       Information Set. (This is the information set which a
       structure-controlled conforming SGML application should act upon.) If
       more than one system identifier is specified, then the corresponding
       entities will be concatenated to form the document entity. Thus the
       document entity may be spread among several files; for example, the
       SGML declaration, prolog and document instance set could each be in a
       separate file. If no system identifiers are specified, then onsgmls
       will read the document entity from the standard input. A command line
       system identifier of - can be used to refer to the standard input.
       (Normally in a system identifier, <OSFD>0 is used to refer to standard

       Part of an SGML System Conforming to International Standard ISO 8879 --
       Standard Generalized Markup Language. An SGML Extended Facilities
       system conforming to Annex A of Internal Standard ISO/IEC 10744 --
       Hypermedia/Time-based Structuring Language

       The following options are available:

       -alinktype, --activate=linktype
           Make link type linktype active. Not all ESIS information is output
           in this case: the active LPDs are not explicitly reported, although
           each link attribute is qualified with its link type name; there is
           no information about result elements; when there are multiple link
           rules applicable to the current element, onsgmls always chooses the

       -Aarchitecture, --architecture=architecture
           Parse with respect to architecture architecture.

       -bbctf, --bctf=bctf, -bencoding, --encoding=encoding
           This determines the encoding used for output. If in fixed character
           set mode it specifies the name of an encoding; if not, it specifies
           the name of a BCTF.

       -B, --batch_mode
           Batch mode. Parse each

           specified on the command line separately, rather than concatenating
            them. This is useful mainly with -s.

            If -tfilename is also specified, then the specified filename will
            be prefixed to the sysid to make the filename for the RAST result
            for each sysid.

       -csysid, --catalog=sysid
           Map public identifiers and entity names to system identifiers using
           the catalog entry file whose system identifier is sysid. Multiple
           -c options are allowed. If there is a catalog entry file called
           catalog in the same place as the document entity, it will be
           searched for immediately after those specified by -c.

       -C, --catalogs

           arguments specify catalog files rather than the document entity.
            The document entity is specified by the first DOCUMENT entry in
            the catalog files.

       -Ddirectory, --directory=directory
           Search directory for files specified in system identifiers.
           Multiple -D options are allowed. See the description of the osfile
           storage manager for more information about file searching.

       -e, --open-entities
           Describe open entities in error messages. Error messages always
           include the position of the most recently opened external entity.

       -Emax_errors, --max-errors=max_errors
           onsgmls will exit after max_errors errors. If max_errors is 0,
           there is no limit on the number of errors. The default is 200.

       -ffile, --error-file=file
           Redirect errors to file. This is useful mainly with shells that do
           not support redirection of stderr.

       -g, --open-elements
           Show the generic identifiers of open elements in error messages.

       -h, --help
           Show a help message and exit.

       -iname, --include=name
           Pretend that

           <!ENTITY % name "INCLUDE">

           occurs at the start of the document type declaration subset in the
           SGML document entity. Since repeated definitions of an entity are
           ignored, this definition will take precedence over any other
           definitions of this entity in the document type declaration.
           Multiple -i options are allowed. If the SGML declaration replaces
           the reserved name INCLUDE then the new reserved name will be the
           replacement text of the entity. Typically the document type
           declaration will contain

           <!ENTITY % name "IGNORE">

           and will use %name; in the status keyword specification of a marked
           section declaration. In this case the effect of the option will be
           to cause the marked section not to be ignored.

       -n, --error-numbers
           Show message numbers in error messages.

       -ooutput_option, --option=output_option
           Output additional information according to output_option:

           entity Output definitions of all general entities not just for data
           or subdoc entities that are referenced or named in an ENTITY or
           ENTITIES attribute.

           id Distinguish attributes whose declared value is ID.

           line Output L commands giving the current line number and filename.

           included Output an i command for included sub-elements.

           empty Output an e command for elements which are not allowed to
           have an end-tag, that is those with a declared content of empty or
           with a content reference attribute.

           notation-sysid Output an f command before an N command, if a system
           identifier could be generated for that notation.

           nonsgml In fixed character set mode, output \% escape sequences for
           non-SGML data characters. Non-SGML data characters can result from
           numeric character references.

           data-attribute Output the notation name and attributes for DATA
           attributes. Otherwise, DATA attributes are treated like CDATA
           attributes. For more details see clause 4.4.3 of Annex K of ISO

           comment Output an _ command with the contents of a comment.
           Multiple comments in a single comment declaration will result in
           multiple distinct _ commands, just as if the comments were each in
           a separate comment declaration.

           omitted Output an o command before a command which was implied by
           the input document, but omitted from the actual markup. This
           currently affects (,), and A commands.

           tagomit As omitted, but only for ( and ) commands.

           attromit As omitted, but only for A commands.

           Multiple -o options are allowed.

       -p, --only-prolog
           Parse only the prolog.  onsgmls will exit after parsing the
           document type declaration. Implies -s.

       -R, --restricted
           Restrict file reading. This option is intended for use with
           onsgmls-based Web tools (e.g. CGI scripts) to prevent reading of
           arbitrary files on the Web server. With this option enabled,
           onsgmls will not read any local files unless they are located in a
           directory (or subdirectory) specified by the -D option or included
           in the SGML_SEARCH_PATH environment variable. As a further security
           precaution, this option limits filesnames to the characters A-Z,
           a-z, 0-9, '?', '.', '_', '-' and does not allow filenames
           containing "..". On systems with MS-DOS file names ':' and '\' are
           also allowed.

       -s, --no-output
           Suppress output. Error messages will still be printed.

       -tfile, --rast-file=file
           Output to file the RAST result as defined by ISO/IEC 13673:1995
           (actually this isn't quite an IS yet; this implements the
           Intermediate Editor's Draft of 1994/08/29, with changes to
           implement ISO/IEC JTC1/SC18/WG8 N1777). The normal output is not

       -v, --version
           Print the version number.

       -wtype, --warning=type
           Control warnings and errors. Multiple -w options are allowed. The
           following values of type enable warnings:

           xml Warn about constructs that are not allowed by XML.

           mixed Warn about mixed content models that do not allow #PCDATA

           sgmldecl Warn about various dubious constructions in the SGML

           should Warn about various recommendations made in ISO 8879 that the
           document does not comply with. (Recommendations are expressed with
           "should", as distinct from requirements which are usually expressed
           with "shall".)

           default Warn about defaulted references.

           duplicate Warn about duplicate entity declarations.

           undefined Warn about undefined elements: elements used in the DTD
           but not defined.

           unclosed Warn about unclosed start and end-tags.

           empty Warn about empty start and end-tags.

           net Warn about net-enabling start-tags and null end-tags.

           min-tag Warn about minimized start and end-tags. Equivalent to
           combination of unclosed, empty and net warnings.

           unused-map Warn about unused short reference maps: maps that are
           declared with a short reference mapping declaration but never used
           in a short reference use declaration in the DTD.

           unused-param Warn about parameter entities that are defined but not
           used in a DTD. Unused internal parameter entities whose text is
           INCLUDE or IGNORE won't get the warning.

           notation-sysid Warn about notations for which no system identifier
           could be generated.

           all Warn about conditions that should usually be avoided (in the
           opinion of the author). Equivalent to: mixed, should, default,
           undefined, sgmldecl, unused-map, unused-param, empty and unclosed.

           immediate-recursion Warn about immediately recursive elements. For
           more detais see clause 2.2.5 of Annex K of ISO 8879.

           fully-declared Warn if the document instance fails to be fully
           declared. This has the effect of changing the SGML declaration to
           more details see clause 2.2.1 of Annex K of ISO 8879.

           fully-tagged Warn if the document instance fails to be
           fully-tagged. This has the effect of changing the SGML declaration
           NO and SHORTTAG ATTRIB OMITNAME NO. For more details see clause
           2.2.2 of Annex K of ISO 8879.

           amply-tagged, amply-tagged-recursive Warn if the doucment instance
           fails to be amply-tagged. Implicitly defined elements may be
           immediately recurisve if amply-tagged-recursive is specified. This
           has the effect of changing the SGML declaration to specify DATATAG
           see clause 2.2.4 of Annex K of ISO 8879.

           type-valid Warn if the document instance fails to be type-valid.
           This has the effect of changing the SGML declaration to specify
           VALIDITY YES. For more details see clause 2.2.3 of Annex K of ISO

           entity-ref Warn about references to non-predefined entities. This
           has the effect of changing the SGML declaration to specify ENTITIES
           REF NONE. For more details see clause 2.3.2 of Annex K of ISO 8879.

           external-entity-ref Warn about references to external entities.
           This includes references to an external DTD subset. This has the
           effect of changing the SGML declaration to specify ENTITIES REF
           INTERNAL. For more details see clause 2.3.3 of Annex K of ISO 8879.

           integral Warn if the document instance is not integrally stored.
           This has the effect of changing the SGML declaration to specify
           ENTITIES INTEGRAL YES. For more details see clause 2.3.1 of Annex K
           of ISO 8879.

           A warning can be disabled by using its name prefixed with no-. Thus
           -wall -wno-duplicate will enable all warnings except those about
           duplicate entity declarations.

           The following values for warning_type disable errors:

           no-idref Do not give an error for an ID reference value which no
           element has as its ID. The effect will be as if each attribute
           declared as an ID reference value had been declared as a name.

           no-significant Do not give an error when a character that is not a
           significant character in the reference concrete syntax occurs in a
           literal in the SGML declaration. This may be useful in conjunction
           with certain buggy test suites.

           no-valid Do not require the document to be type-valid. This has the
           effect of changing the SGML declaration to specify VALIDITY
           NOASSERT and IMPLYDEF ATTLIST YES ELEMENT YES. An option of -wvalid
           has the effect of changing the SGML declaration to specify VALIDITY
           TYPE and IMPLYDEF ATTLIST NO ELEMENT NO. If neither -wvalid nor
           -wno-valid are specified, then the VALIDITY and IMPLYDEF specified
           in the SGML declaration will be used.

           no-afdr Do not give errors when AFDR meta-DTD notation features are
           used in the DTD. These errors are normally produced when parsing
           the DTD, but suppressed when parsing meta-DTDs.

       -x, --references
           Show information about relevant clauses (from ISO 8879:1986) in
           error messages.

       The following options are also supported for backward compatibility
       with sgmls:

           Same as -wduplicate.

           Same as -oline.

           Same as -c.

           Same as -wdefault.

           Same as -wundef.

       ospent(1), ospam(1), osgmlnorm(1), osx(1)

       James Clark

       Ian Castle <ian.castle@openjade.org>

OpenSP                           November 2002                      ONSGMLS(1)
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