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#!/bin/bash
#USAGE
# fontd CHAR DIR
# display CHAR if found in any bdf fonts in DIR/
# NOTE: CHAR must be in decimal encoding point format of bdf
#expands ~ and *, it's a bit unsafe
eval fonts="$2/*bdf"
#gets font size, it can take multiple fonts as input so only get the first one
#and assume they're all the same size
size=$(cat $fonts | grep -m 1 PIXEL_SIZE | awk '{print $2}')
#get bdf bitmap info from bdf
#cflag labels the character part; bflag labels just the bitmap part, on first
#ENDCHAR after finding the bitmap it exits
bdf=$(cat $2/*bdf | awk "/ENCODING $1$/{cflag=1}/BITMAP/{if (cflag==1){bflag=1};next}/ENDCHAR/{if (bflag==1){exit}}bflag")
#convert to binary, cols depends on size
bin=$(echo $bdf | xxd -r -ps | xxd -b -c $(($size/8))|\
#strip all the formating, bbrll takes 0s and 1s as input
sed 's/^.*://g;s/\s[^[:space:]]*$//;s/[^01]//g')
#saving it as a var removed newlines, must add in with sed, send to bbrll to
# display
echo LOAD_RAW $bin END_RAW PRINT_BRAILLE | sed 's/\s/\n/g' | bbrll
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