NAME

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

VERSION

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

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.

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.

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.

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.

INCOMPATIBILITIES

       None reported.

BUGS AND LIMITATIONS

       No bugs have been reported.

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>.

COPYRIGHT AND LICENSE

       This software is copyright (c) 2015 by Christopher J. Madsen.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

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.