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gotta-patch-em-all: Create all fonts with unified release timestamp

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[why]
All the fonts will have different timestamps, and within each font the
creation and modification date might also differ. That is quite
confusing and makes automated testing very complicated.

[how]
Use one date-time for ALL fonts and for creation and modification date
in the font file.
But do not change the date-time if we already set that somewhere before :-}

Also remove the 'special' properitary fontforge timestamp tables FFTM from
the patched fonts. This is only possible since FontForge 20th Anniversary
Edition.

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
This commit is contained in:
Fini Jastrow 2023-01-04 20:30:21 +01:00
parent a577d7261a
commit 40ded7c2f0
2 changed files with 19 additions and 6 deletions
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14
bin/scripts/gotta-patch-em-all-font-patcher!.sh
View File

@ -1,6 +1,6 @@
#!/usr/bin/env bash
# Nerd Fonts Version: 2.3.0-RC
# Script Version: 1.1.1
# Script Version: 1.2.0
# used for debugging
# set -x
@ -60,7 +60,6 @@ while getopts ":h-:" option; do
info_only=$2
echo "${LINE_PREFIX} 'Info Only' option given, only generating font info (not patching)"
;;
;;
*)
echo >&2 "Option '${OPTARG}' unknown"
exit 1;;
@ -100,6 +99,17 @@ done < <(find "$source_fonts_dir" -iregex ${like_pattern} -type f -print0)
# print total number of source fonts found
echo "$LINE_PREFIX Total source fonts found: ${#source_fonts[*]}"
# Use one date-time for ALL fonts and for creation and modification date in the font file
if [ -z "${SOURCE_DATE_EPOCH}" ]
then
export SOURCE_DATE_EPOCH=$(date +%s)
fi
release_timestamp=$(date -R --date=@${SOURCE_DATE_EPOCH} 2>/dev/null) || {
echo >&2 "$LINE_PREFIX Invalid release timestamp SOURCE_DATE_EPOCH: ${SOURCE_DATE_EPOCH}"
exit 2
}
echo "$LINE_PREFIX Release timestamp is ${release_timestamp}"
function patch_font {
local f=$1; shift
local i=$1; shift

11
font-patcher
View File

@ -315,6 +315,11 @@ class font_patcher:
def generate(self, sourceFonts):
sourceFont = sourceFonts[0]
# the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
if int(fontforge.version()) >= 20201107:
gen_flags = (str('opentype'), str('PfEd-comments'), str('no-FFTM-table'))
else:
gen_flags = (str('opentype'), str('PfEd-comments'))
if len(sourceFonts) > 1:
layer = None
# use first non-background layer
@ -325,8 +330,7 @@ class font_patcher:
outfile = os.path.normpath(os.path.join(
sanitize_filename(self.args.outputdir, True),
sanitize_filename(sourceFont.familyname) + ".ttc"))
# the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
sourceFonts[0].generateTtc(outfile, sourceFonts[1:], flags=(str('opentype'), str('PfEd-comments')), layer=layer)
sourceFonts[0].generateTtc(outfile, sourceFonts[1:], flags=gen_flags, layer=layer)
message = "\nGenerated: {} fonts in '{}'".format(len(sourceFonts), outfile)
else:
fontname = sourceFont.fullname
@ -335,12 +339,11 @@ class font_patcher:
outfile = os.path.normpath(os.path.join(
sanitize_filename(self.args.outputdir, True),
sanitize_filename(fontname) + self.args.extension))
# the `PfEd-comments` flag is required for Fontforge to save '.comment' and '.fontlog'.
bitmaps = str()
if len(self.sourceFont.bitmapSizes):
print("Preserving bitmaps {}".format(self.sourceFont.bitmapSizes))
bitmaps = str('otf') # otf/ttf, both is bf_ttf
sourceFont.generate(outfile, bitmap_type=bitmaps, flags=(str('opentype'), str('PfEd-comments')))
sourceFont.generate(outfile, bitmap_type=bitmaps, flags=gen_flags)
message = "\nGenerated: {} in '{}'".format(self.sourceFont.fullname, outfile)
# Adjust flags that can not be changed via fontforge