pdf

#!/bin/sh

# See ~/org/notes/PDFviewers.org for justification on decision order
viewers='kpdf evince okular acroread xpdf'

found=
for file in "$@"; do
    if [ -r "$file" ]; then
        found=y
    else
        echo "$file doesn't exist or unreadable!" >&2
    fi
done

if [ -z "$found" ]; then
    echo "No valid file found; aborting!" >&2
    exit 1
fi

# acroread -help gets truncated before echoing 'openInNewWindow'
# when STDOUT is not a tty?!

# if acroread -helpall | grep -q openInNewWindow; then
  acro_opts=-openInNewWindow
# else
#     acro_opts=
# fi

exe=
for exe_check in $viewers; do
    if which $exe_check >/dev/null 2>&1; then
        exe=$exe_check
#        echo "Will use $exe ..."
        break
    else
        :
#        echo "$exe_check not found"
    fi
done

if [ -z "$exe" ]; then
    echo "No PDF viewer found; aborting." >&2
    exit 1
fi

if [ "$exe" = "acroread" ]; then
    opts="$acro_opts"
fi

"$exe" $opts "$@"