cbmfont

v0.25

cbmfont is a linux c99 application

cbmfont can do multiple things with cbm amiga pixel fonts, including
-crafting a preview image
-dumping the font gfx to an image file
-prints infos about a fontfile as a single line summary
-lint reporting about the font, with warning & errors
-font files decoding, reporting about diskfont file structure

cbmfont can only handle pixel fonts b&w, grayscale or coloured.
vector font .otag file can't be loaded with it.

download linux ELF exe i386 and amd64 archives:

cbmfont-0.25_amd64.tar.gz (35k)
cbmfont-0.25_i386.tar.gz (35k)

cbmfont [--help][--version][-v][-l|--lint][-g][-c][-d][-s|--symbols][-p|--preview][--cmap [FILENAME]][-r PATH] FILE
                  --version  
                     --help  help
                         -v  print info while doing 
               -l or --lint  report lint 
                         -g  report about glyphs while drawing text, require -p  
             -c or --chunks  report about file chunks
                         -t  draw glyphs on the command line, require -p 
           -ds or --symbols  craft an image with the font content
            -p or --preview  craft a preview image 
            -s or --summary  short font summary
                       --fg  rgba color as 0xRRGGBBAA  works only with b&w fonts
                       --bg  rgba color as 0xRRGGBBAA  works only with b&w fonts
          --cmap [FILENAME]  load .cmap palette, filename with path
    --injectcmap [FILENAME]  load .cmap palette, then modify the font files !!cannot be reversed!!
                    -r PATH  destination directory.
                       FILE  source file.

preview

option -p or --preview

option --preview craft an image file, a png, in the work directory.
if -r [PATH] is used, the image file will be in PATH
file is named HANDLE_preview.png with HANDLE being the name of the .font without ".font"

colors can be changed with --fg and --bg

.font preview in a window
IMAGEVIEWER="display" DOTFONT="/usr/local/share/fonts_pixel/1994/SCOOPY2.font" HANDLEFONT=$(basename "$DOTFONT" \.font) cbmfont -p "$DOTFONT" -r /tmp/ ; $IMAGEVIEWER /tmp/"$HANDLEFONT"_preview.png ; rm /tmp/"$HANDLEFONT"_preview.png

short font summary str

option -s or --summary

prints a single line summary per fontfile, as:
Mcoop.font cbm font, 6 entries: Mcoop.font #0, 60, YSize: 60, not found Mcoop.font #1, 44, YSize: 44, not found Mcoop.font #2, 39, YSize: 39, not found Mcoop.font #3, 30, YSize: 30, Style:NORMAL , Flags:TALLDOT PROPORTIONAL DESIGNED , Glyphs ranges: OPERATORS NUMBERS ASCII_UPPERCASES BRACKETS ASCII_LOWERCASES Mcoop.font #4, 21, YSize: 21, Style:NORMAL , Flags:TALLDOT PROPORTIONAL DESIGNED , Glyphs ranges: OPERATORS NUMBERS ASCII_UPPERCASES BRACKETS ASCII_LOWERCASES Mcoop.font #5, 17, YSize: 17, Style:NORMAL , Flags:DISKFONT TALLDOT PROPORTIONAL DESIGNED , Glyphs ranges: OPERATORS NUMBERS ASCII_UPPERCASES BRACKETS ASCII_LOWERCASES
find about the meaning of those tags in the tables below.

glyphs ranges are checked via the font glyphs definition, and then each glyph is checked to verify an image exists. if a defined range has each glyph then the tag is printed. there is, uptoday, no way to verify the encoding so those names are only indications about the range.

to report about multiple files, bash could be used:
for FILE in *.font; do cbmfont -s "$FILE" ;done

lint

option -l or --lint

there are really few lint detected uptnow.
-if files are found
-if drawer content has more or less files than the .font has

========================================== Prime.font ========================================== fontdrawer found:Prime ✔ found lint: 2 entries found != 3 .font fileentries dotfontfile requested fc_FontDimFileName:9 ✔ found dotfontfile requested fc_FontDimFileName:8 ✔ found dotfontfile requested fc_FontDimFileName:11 ✘ not found

========================================== garamond.font ========================================== fontdrawer found:garamond ✔ found lint: 0 entries found != 3 .font fileentries dotfontfile requested fc_FontDimFileName:23 ✘ not found dotfontfile requested fc_FontDimFileName:32 ✘ not found dotfontfile requested fc_FontDimFileName:64 ✘ not found

to report about multiple files:
for FILE in *.font; do cbmfont -l "$FILE" ;done

print info while doing things

option -v

font style
NORMAL	normal
UNDERLINED	underlined
BOLD	bold face
ITALIC	italic (slanted 1:2 right)
EXTENDED	extra wide extended face (wider than normal)
COLORFONT	a color font
TAGGED		not implemented

font flags
ROMFONT	The font is built into the ROM (mostly, only Topaz-8 and Topaz-9 are ROM fonts).
DISKFONT	The font was loaded from disk
REVPATH	The font is designed to be printed from from right to left	not implemented
TALLDOT	The font was designed for a Hires screen (640x200 NTSC, non-interlaced)	not implemented
WIDEDOT	The font was designed for a Lores Interlaced screen (320x400 NTSC)	not implemented
FIXEDWIDTH	any glyphs have the same widths, are constant	non standard
PROPORTIONAL	Glyphs widths of this font are not constant
DESIGNED	The font size was explicitly designed at this size rather than constructed.
REMOVED	the font has been removed	not implemented

colourfont flags
COLORFONT	The color map for this font contains colors specified by the designer.
GREYFONT	The colors for this font describe evenly stepped gray shades from low to high.
ANTIALIAS	zero background thru fully saturated char	not implemented

glyphs ranges tags	range	if encoding ascii or latin
ASCII_CONTROLS	0-31	ascii control codes
OPERATORS	33-47	ascii !"#$%&'()*+,-./
NUMBERS	48-57	ascii numbers
PUNCTUATIONS	58-64	ascii :SEMIC<=>?@
ASCII_UPPERCASES	65-90	ascii uppercase
BRACKETS	91-96	ascii [\]^_`
ASCII_LOWERCASES	97-122	ascii lowercase
CURLIES	123-126	ascii {\|}~
LATIN_CONTROLS	127-159	latin control codes
LATIN_SPECIALS	160-191	latin special glyphs
LATIN_UPPERCASES_ACCENTS	192-222	latin uppercase accented
LATIN_LOWERCASES_ACCENTS	223-255	latin lowercase accented

changelog

20250905 v0.25
-cleanups glyphs reports printouts
-tested ok with 1856 .font files
-improved cli arg color handling
-report about .font file content also if drawer is missing
-multiple small fixes
-version 0.25

20250902 v0.23
-summary includes info about glyphs ranges found in the font
-summary cleanup
-preview improved
-multiple small fixes
-version 0.23

20250901 v0.21
-if a cmap is found use it automatically
-better errors messages
-improved cli arg color handling
-changed some cli args, summary is now -s or --summary
-multiple small fixes
-version 0.21

20250830 v0.2
-made a test suite to test the cli, and fixed errors found
-return codes now linux style: return 0 if ok, !0 on errors
-improved build so exe is smaller
-version 0.2
-tar.gz archive

20240402 v0.1
-multiple small fixes
-handle subdirectories better
-preview also if some files are missing

20231023 v0.1
-draw with other colors, also .cmap palette files
cli interface with --fg --bg --cmap

-option to return a short single line summary about the font,
cli interface with -t

20231014-23 v0.1
-improved many things
-load most fonts,
-report about probable palette errors
-inject palette in existing font file -function only, no cli interface
-fallback to uppercase if lowercase glyph absent
-report if other files are found in the font drawer

20220126 v0.0
-can do previews

links

Amiga bitmap font reader/viewer for Windows and Linux (written in C). by mrmcsoftware
afont.c

python tools to read amiga bitmap font files, also convert to ttf. by smugpie
here

R package AmigaFFH has ways to use mono fonts:
here

noospot

cbmfont

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