PostScript::File::Metrics::Loader - Load metrics for PostScript fonts using Font::AFM
This document describes version 2.20 of PostScript::File::Metrics::Loader, released February 11, 2012 as part of PostScript-File version 2.20.
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.
This returns the encoding vector for
$encoding, an arrayref of 256 glyph names.
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.
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.
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.
No bugs have been reported.
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 http://github.com/madsen/postscript-file.
This software is copyright (c) 2012 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.
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