Working on fully automating the fontforge interaction

Makefile

@@ -5,17 +5,36 @@ pngs: characters.png
 	gm convert -crop 8x8 characters.png +adjoin pngs/%03d.png
 	touch pngs
 
+#PNGS=$(wildcard pngs/*.png)
+#SVGS=$(patsubst pngs/%.png, %.svg, $(PNGS))
+#
+#%.svg: pngs/%.png | pngs
+#	echo $@ $<
+#
+#$(SVGS): %.svg: pngs/%.png | pngs
+#	echo $@ $<
+#	touch "$@"
+
+svgs: narrow-svgs wide-svgs
+
 narrow-svgs: pngs
 	mkdir -p narrow-svgs
 	for i in pngs/???.png ;\
 	do \
 	  f=$$(basename "$$i") ;\
-	  gm convert "$$i" -crop 6x8 -filter Point -resize 48x64 -black-threshold 50%% "$$f.bmp" ;\
-	  potrace "$$f.bmp" -o narrow-svgs/"$${f%%.png}.svg" -i -a 1.01 -s -z black ;\
-	  rm -f "$$f.bmp" ;\
+	  ./createsvg.sh "$$i" "narrow-svgs/$${f%%.png}.svg" 6 8 ;\
 	done
 	touch narrow-svgs
 
+wide-svgs: pngs
+	mkdir -p wide-svgs
+	for i in pngs/???.png ;\
+	do \
+	  f=$$(basename "$$i") ;\
+	  ./createsvg.sh "$$i" "wide-svgs/$${f%%.png}.svg" 8 8 ;\
+	done
+	touch wide-svgs
+
 MSX-Screen0.woff: msx-screen0.sfd
 
 MSX-Screen0.ttf: msx-screen0.sfd
@@ -23,3 +42,8 @@ MSX-Screen0.ttf: msx-screen0.sfd
 MSX-Screen1.woff: msx-screen1.sfd
 
 MSX-Screen1.ttf: msx-screen1.sfd
+
+.PHONY: clean
+
+clean:
+	rm -rf narrow-svgs wide-svgs pngs

createsvg.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+INPUT="$1"
+OUTPUT="$2"
+CROPWIDTH="$3"
+CROPHEIGHT="$4"
+
+W=$CROPWIDTH
+H=$CROPHEIGHT
+SW=$((W * 8))
+SH=$((H * 8))
+
+BMP="${INPUT}.bmp"
+gm convert "$INPUT" -crop ${W}x${H} -filter Point -resize ${SW}x${SH} -black-threshold 50%% "$BMP"
+potrace "$BMP" -o "$OUTPUT" -i -a 1.01 -s -z black
+rm -f "$BMP"

importchars.py

@@ -0,0 +1,19 @@
+import fontforge
+import sys
+import os
+
+font = fontforge.font()
+
+f = open(sys.argv[1])
+for line in f:
+    codepoint, msxcode = line.strip().split()
+    codepoint = int(codepoint)
+    msxcode = int(msxcode)
+    glyph = font.createChar(codepoint)
+    svgfile = "{:03d}.svg".format(msxcode)
+    print("importing", svgfile)
+    glyph.importOutlines(os.path.join(sys.argv[2], svgfile))
+
+font.save(sys.argv[3])
+font.generate(sys.argv[4])
+

msx2utf8.py

@@ -49,6 +49,8 @@ if len(sys.argv) < 2:
 
 if sys.argv[1] == '-l':
     for m,c in msxchars():
+        if m < 32 or m == 127:
+            continue
         try:
             n = name(c)
         except ValueError: