tiennm99
177c4b9a33
PDF rendering failed on Linux with "stat usr/share/fonts/...: no such file or directory": fpdf joins the font path onto its own font directory, which it defaults to ".", so path.Join turns an absolute path into a working-directory-relative one. It only resolved when the process happened to run from the filesystem root, which is why Windows was unaffected. Font data is now read by pdfout and handed over as bytes. LoadFont also falls back to a bundled DejaVu Sans, so a host with no fonts installed still renders. An explicitly requested font remains a hard error when unreadable rather than being silently substituted. Tests verify the bundled font parses and covers Vietnamese, which is the reason it exists.
1.2 KiB
Bundled font
DejaVuSans.ttf is embedded into the binary and used when no font is supplied
and no suitable system font is found. It covers the Latin Extended Additional
block, which is what Vietnamese diacritics need — a font with only basic Latin
coverage silently drops them.
The following is recorded in the font file's own name table:
- Version:
Version 2.37 - Copyright:
Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved.Copyright (c) 2006 by Tavmjong Bah. All Rights Reserved.DejaVu changes are in public domain - License information: http://dejavu.sourceforge.net/wiki/index.php/License
The DejaVu fonts are free and redistributable, which is why they ship with most
Linux distributions. This copy came from Alpine's font-dejavu package, which
does not include the license text as a separate file. For a vendored copy of the
full license text, take LICENSE from the upstream DejaVu release and add it to
this directory.
To swap the bundled font, replace DejaVuSans.ttf and update this file. Verify
the replacement covers Vietnamese first — TestBundledFontCoversVietnamese in
../font_test.go checks a representative set of characters.