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PostScript::File::Metrics::Loader - Load metrics for PostScript fonts using Font::AFM

Author

       Christopher J. Madsen  "<perl AT cjmweb.net>"

       Please report any bugs or feature requests to "<bug-PostScript-File AT rt.cpan.org>" or through  the  web
       interface at <http://rt.cpan.org/Public/Bug/Report.html?Queue=PostScript-File>.

       You       can      follow      or      contribute      to      PostScript-File's      development      at
       <https://github.com/madsen/postscript-file>.

Bugs And Limitations

       No bugs have been reported.

Configuration And Environment

       PostScript::File::Metrics::Loader requires no configuration files or environment variables.

       However, it uses Font::AFM, and unfortunately that's difficult to configure  properly  (which  is  why  I
       created  PostScript::File::Metrics  in  the  first  place).   Font::AFM  expects  to  find  a  file named
       FontName.afm in one of the directories it searches.

       I wound up creating symlinks in /usr/local/lib/afm/ (which is one of the  default  paths  that  Font::AFM
       searches if you don't have a "METRICS" environment variable):

        Courier.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/courier/pcrr8a.afm
        Courier-Bold.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/courier/pcrb8a.afm
        Courier-BoldOblique.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/courier/pcrbo8a.afm
        Courier-Oblique.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/courier/pcrro8a.afm
        Helvetica.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/helvetic/phvr8a.afm
        Helvetica-Bold.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/helvetic/phvb8a.afm
        Helvetica-BoldOblique.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/helvetic/phvbo8a.afm
        Helvetica-Oblique.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/helvetic/phvro8a.afm
        Symbol.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/symbol/psyr.afm
        Times-Bold.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/times/ptmb8a.afm
        Times-BoldItalic.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/times/ptmbi8a.afm
        Times-Italic.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/times/ptmri8a.afm
        Times-Roman.afm
          -> /usr/share/texmf-dist/fonts/afm/adobe/times/ptmr8a.afm

       Paths  on  your  system  may  vary.   I  suggest  searching  for ".afm" files, and then grepping them for
       "FontName X", where X is the font you need metrics for.

Description

       PostScript::File::Metrics::Loader is used by PostScript::File::Metrics when no pre-compiled metrics are
       available for the requested font or encoding.  It uses Font::AFM to read the AFM file and extract metrics
       from it.

       You should not normally need to use this module, since pre-compiled metrics for the standard PostScript
       fonts are included with this distribution.  If you request metrics for a non-standard font,
       PostScript::File::Metrics will load this module automatically.

       If you need metrics for additional fonts, you may want to modify and run examples/generate_metrics.pl to
       create pre-compiled modules for them.

Diagnostics

       "Can't find definition for %s"
           If this happens, it indicates you found a bug in PostScript::File::Metrics::Loader.  Please report it
           as described under "AUTHOR".

       "Can't find the AFM file for %s"
           Font::AFM  could  not  find  %s.afm  in  any  of the directories it searched.  See "CONFIGURATION AND
           ENVIRONMENT".

       "Invalid term %s in %s"
           This also indicates a bug in PostScript::File.  Please report it.

       "Unknown encoding %s"
           You asked for an encoding that PostScript::File::Metrics doesn't know about.

Disclaimer Of Warranty

       BECAUSE  THIS  SOFTWARE  IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT
       PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS  AND/OR  OTHER
       PARTIES  PROVIDE  THE  SOFTWARE  "AS  IS"  WITHOUT  WARRANTY  OF  ANY  KIND, EITHER EXPRESSED OR IMPLIED,
       INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND  FITNESS  FOR  A  PARTICULAR
       PURPOSE.  THE  ENTIRE  RISK  AS  TO  THE  QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE
       SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

       IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER,  OR  ANY
       OTHER  PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE LIABLE
       TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING  OUT  OF
       THE  USE  OR  INABILITY  TO  USE  THE  SOFTWARE  (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
       RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE  TO  OPERATE
       WITH  ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
       DAMAGES.

perl v5.36.0                                       2022-10-14             PostScript::File::Metrics::Loader(3pm)

Incompatibilities

       None reported.

Name

       PostScript::File::Metrics::Loader - Load metrics for PostScript fonts using Font::AFM

Subroutines

get_encoding_vector
         PostScript::File::Metrics::Loader::get_encoding_vector($encoding)

       This returns the encoding vector for $encoding, an arrayref of 256 glyph names.

   load
         PostScript::File::Metrics::Loader::load($font, \@encodings)

       This uses Font::AFM to read the metrics for $font, and creates width tables for each of the @encodings.
       The metrics are stored into the hashes used internally by PostScript::File::Metrics.

Version

       This document describes version 2.20 of PostScript::File::Metrics::Loader, released October 10, 2015 as
       part of PostScript-File version 2.23.

See Also