dotfiles/scripts/groff-compiler

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#!/bin/sh
# Compiler script for groff
#
# TODO:
# Make groff auto-calculate image height (spacing below)
# based on given width and the image's aspect ratio
#
# [-k (preconv)] Convert encoding to something groff understands
# [-e (eqn)] Format equations for troff or MathML
# [-t (tbl)] Format tables for troff
# [-p (pic)] Compile pictures for troff or TeX
# [-G (grap)] Typesetting graphs, usually not installed by default and not available on termux repo
# [-j (chem)] Chemical structure diagrams, messes with spacing, crashes when using text inside eqn
FILE="$1"
OUT="${FILE%%.ms}.pdf"
# Configuration
SOELIM="/usr/local/bin/soelim" # soelim PATH
REFER="/usr/local/bin/refer" # refer PATH
GROFF="/usr/local/bin/groff" # groff PATH
BIB="$HOME/Documents/bibliography" # Bibliography file
MAC="$HOME/.config/groff/" # Macros dir
PRE="-ketpG" # Preprocessors
# Takes a line with .IMG command, converts given image
# to pdf format and inserts properly formatted .PDFPIC
auto_pdfpic() {
LINE="$1"
IMAGE="$(echo "$LINE" | cut -d '"' -f 2)"
[ "$IMAGE" != "${IMAGE%%.*}.pdf" ] && ! [ -e "${IMAGE%%.*}.pdf" ] &&
convert -quiet "$IMAGE" "${IMAGE%%.*}.pdf"
echo "$LINE" | sed 's|^.IMG|.PDFPIC|' | sed "s|$IMAGE|${IMAGE%%.*}.pdf|"
}
# If there is any .IMG command, replace with
# auto_pdfpic output in a temp file.
if [ "$(grep '^.IMG\s' "$FILE")" ] ; then
TEMP="${FILE%%.*}.tmp"
echo $TEMP
cp "$FILE" "$TEMP"
while true ; do
LINE="$(grep -m 1 '^.IMG\s' "$TEMP")"
[ -n "$LINE" ] &&
NEW_LINE="$(auto_pdfpic "$LINE")" &&
sed -i "s@$LINE@$NEW_LINE@g" "$TEMP" ||
break
done
FILE="$TEMP"
fi
sed "
s/Á/\\\['A\]/g;
s/É/\\\['E\]/g;
s/Í/\\\['I\]/g;
s/Ó/\\\['O\]/g;
s/Ú/\\\['U\]/g;
s/á/\\\['a\]/g;
s/é/\\\['e\]/g;
s/í/\\\['i\]/g;
s/ó/\\\['o\]/g;
s/ú/\\\['u\]/g;
" "$FILE" |
"$SOELIM" -I "$MAC" | "$REFER" -p "$BIB" | "$GROFF" -mspdf -T pdf -U "$PRE" > "$OUT"
rm -f "$TEMP"