#!/bin/sh

## Create lists of system- and TeX Live packages.

## Variables
HOST="$(hostname)"
PKG_ROOT="$HOME/.pkg"
mkdir -p "$PKG_ROOT"

## Arch Linux
if command -v pacman >/dev/null 2>&1; then
	## Note: the "-n" option was added between 2012 and 2013.
	pacman -Qnq | sort >"$PKG_ROOT/arch-official-${HOST}"
	pacman -Qmq | sort >"$PKG_ROOT/arch-aur-${HOST}"
fi

## FreeBSD
if [ "$(uname)" = "FreeBSD" ]; then
	pkg_info | cut -f1 -d' ' >"$PKG_ROOT/freebsd-${HOST}"
fi

## TeXlive
if command -v tlmgr >/dev/null 2>&1; then
	## We use <TAB> in the sed expressions.
	TEXLIVE_BASIC="$(mktemp)"
	tlmgr info collection-basic --list | sed -n '/^	/{s/	//g;p;}' | sort >"$TEXLIVE_BASIC"

	TEXLIVE_ALL="$(mktemp)"
	tlmgr info --only-installed | grep -v 'x86_64\|amd64' | cut -d' ' -f2 | cut -f1 -d':' | sort >"$TEXLIVE_ALL"

	comm -3 "$TEXLIVE_BASIC" "$TEXLIVE_ALL" | sed 's/	//g' | \
		grep -vi 'collection-basic\|scheme-minimal\|texlive-common\|texlive-docindex\|texlive-en' >"$PKG_ROOT/texlive-$(uname)-${HOST}"

	rm "$TEXLIVE_ALL" "$TEXLIVE_BASIC"
fi

## Zsh version
# TEXLIVE_BASIC="$(tlmgr info collection-basic --list | sed -n '/^	/{s/	//g;p;}' | sort)"
# TEXLIVE_ALL="$(tlmgr info --only-installed | grep -v 'x86_64\|amd64' | cut -d' ' -f2 | cut -f1 -d':' | sort)"

# comm -3 <(echo "$TEXLIVE_BASIC") <(echo "$TEXLIVE_ALL") | sed 's/	//g' | \
#     grep -vi 'collection-basic\|scheme-minimal\|texlive-common\|texlive-docindex\|texlive-en' >"$PKG_ROOT/texlive-$(uname)-${HOST}"