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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
#
# This eclass is used by vim.eclass and vim-plugin.eclass to update
# the documentation tags. This is necessary since vim doesn't look in
# /usr/share/vim/vimfiles/doc for documentation; it only uses the
# versioned directory, for example /usr/share/vim/vim62/doc
#
# We depend on vim being installed, which is satisfied by either the
# DEPEND in vim-plugin or by whatever version of vim is being
# installed by the eclass.
update_vim_helptags() {
has "${EAPI:-0}" 0 1 2 && ! use prefix && EROOT="${ROOT}"
local vimfiles vim d s
# This is where vim plugins are installed
vimfiles="${EROOT}"/usr/share/vim/vimfiles
if [[ $PN != vim-core ]]; then
# Find a suitable vim binary for updating tags :helptags
vim=$(type -P vim 2>/dev/null)
[[ -z "$vim" ]] && vim=$(type -P gvim 2>/dev/null)
[[ -z "$vim" ]] && vim=$(type -P kvim 2>/dev/null)
if [[ -z "$vim" ]]; then
ewarn "No suitable vim binary to rebuild documentation tags"
fi
fi
# Make vim not try to connect to X. See :help gui-x11-start
# in vim for how this evil trickery works.
if [[ -n "${vim}" ]] ; then
ln -s "${vim}" "${T}/tagvim"
vim="${T}/tagvim"
fi
# Install the documentation symlinks into the versioned vim
# directory and run :helptags
for d in "${EROOT%/}"/usr/share/vim/vim[0-9]*; do
[[ -d "$d/doc" ]] || continue # catch a failed glob
# Remove links, and possibly remove stale dirs
find $d/doc -name \*.txt -type l | while read s; do
[[ $(readlink "$s") = $vimfiles/* ]] && rm -f "$s"
done
if [[ -f "$d/doc/tags" && $(find "$d" | wc -l | tr -d ' ') = 3 ]]; then
# /usr/share/vim/vim61
# /usr/share/vim/vim61/doc
# /usr/share/vim/vim61/doc/tags
einfo "Removing $d"
rm -r "$d"
continue
fi
# Re-create / install new links
if [[ -d $vimfiles/doc ]]; then
ln -s $vimfiles/doc/*.txt $d/doc 2>/dev/null
fi
# Update tags; need a vim binary for this
if [[ -n "$vim" ]]; then
einfo "Updating documentation tags in $d"
DISPLAY= $vim -u NONE -U NONE -T xterm -X -n -f \
'+set nobackup nomore' \
"+helptags $d/doc" \
'+qa!' </dev/null &>/dev/null
fi
done
[[ -n "${vim}" && -f "${vim}" ]] && rm "${vim}"
}
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