pman

#!/usr/bin/env bash

pmancache=$HOME/.dotfiles/etc/cache/pman

function cache_man_pdf () {
    if ! [[ -f "$pmancache/$@.pdf" ]]; then
        man -t "$@" > "$pmancache/$@.ps"

        if [ $? -eq 0 ]; then
            echo "Caching man page for $@."
            pstopdf "$pmancache/$@.ps" -o "$pmancache/$@.pdf" &> /dev/null
        else
            return 1
        fi

        rm "$pmancache/$@.ps"
    fi
}

function pman () {
    cache_man_pdf "$@"

    if [ $? -eq 0 ]; then
        open -a Preview "$pmancache/$@.pdf"
    else
        return 1
    fi
}

function qman () {
    cache_man_pdf "$@"

    if [ $? -eq 0 ]; then
        ( qlmanage -p "$pmancache/$@.pdf" & ) &> /dev/null
    else
        return 1
    fi
}

function pmandb () {
    if ! [[ -d $pmancache ]]; then
        mkdir -p $pmancache
    fi

    local manpages=$(man -k . | perl -pe 's/(.+) - .+/\1/' | perl -pe 's/\(.*?\)(?:, )?/\1\n/g' | egrep -v "^[[:space:]]*$")

    for i in $manpages; do
        cache_man_pdf "$i" 2> /dev/null
    done
}