[gentoo-dev] [PATCH 2/2] texlive-module.eclass: add texlive-module_update_tlpdb

[Florian Schmaus]

Update (or create) the tlpdb based on the contents of
/usr/share/tlpkg/tlpobj.

Closes: https://bugs.gentoo.org/928162
Signed-off-by: Florian Schmaus <f...@gentoo.org>
---
 eclass/texlive-module.eclass | 57 ++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

diff --git a/eclass/texlive-module.eclass b/eclass/texlive-module.eclass
index d19e02f02647..15346a3535eb 100644
--- a/eclass/texlive-module.eclass
+++ b/eclass/texlive-module.eclass
@@ -420,6 +420,61 @@ texlive-module_src_install() {
        texlive-common_handle_config_files
 }
 
+# @FUNCTION: texlive-module_update_tlpdb
+# @DESCRIPTION:
+# Update the TexLive package database at /usr/share/tlpkg/texlive.tlpdb.
+
+texlive-module_update_tlpdb() {
+       [[ ${TL_PV} -lt 2023 ]] && return
+
+       # If we are updating this package, then there is no need to update
+       # the tlpdb in postrm, as it will be again updated in postinst.
+       [[ -n ${REPLACING_VERSIONS} && ${EBUILD_PHASE} == postrm ]] && return
+
+       local tlpkg="${EROOT}"/usr/share/tlpkg
+       local tlpobj="${tlpkg}"/tlpobj
+       local tlpdb="${tlpkg}"/texlive.tlpdb
+
+       ebegin "Regenerating TexLive package database (${tlpdb}, 
${EBUILD_PHASE})"
+
+       local new_tlpdb="${T}"/texlive.tlpdb
+
+       touch "${new_tlpdb}" || die
+
+       find "${tlpobj}" -maxdepth 1 -type f -name "*.tlpobj" -print0 |
+               sort -z |
+               xargs -0 --no-run-if-empty cat >> "${new_tlpdb}"
+       assert "generating tlpdb failed"
+
+       if [[ -f ${tlpdb} ]]; then
+               cmp -s "${new_tlpdb}" "${tlpdb}"
+               local ret=$?
+               case ${ret} in
+                       # content equal
+                       0)
+                               # Nothing to do, return.
+                               eend 0
+                               return
+                               ;;
+                       # content differs
+                       1)
+                               ;;
+                       # cmp failed with an error
+                       *)
+                               eend ${ret} "comparing new and existing tlpdb 
failed (exit status: ${ret})"
+                               die
+                               ;;
+               esac
+       fi
+
+       mv "${new_tlpdb}" "${tlpdb}"
+       eend $? "moving tlpdb into position failed (exit status: ${?})" || die
+
+       if [[ ! -s ${tlpdb} ]]; then
+               rm "${tlpdb}" || die
+       fi
+}
+
 # @FUNCTION: texlive-module_pkg_postinst
 # @DESCRIPTION:
 # exported function:
@@ -428,6 +483,7 @@ texlive-module_src_install() {
 
 texlive-module_pkg_postinst() {
        etexmf-update
+       texlive-module_update_tlpdb
        [[ -n ${TL_MODULE_INFORMATION} ]] && elog "${TL_MODULE_INFORMATION}"
 }
 
@@ -439,6 +495,7 @@ texlive-module_pkg_postinst() {
 
 texlive-module_pkg_postrm() {
        [[ -z ${REPLACING_VERSIONS} ]] && etexmf-update
+       texlive-module_update_tlpdb
 }
 
 fi
-- 
2.43.2