[PATCH cygport] dodoc: Skip a file if a compressed version already exists

[Christian Franke <Christian.Franke@t-online.de>]

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It IMO makes sense to compress large and rarely viewed doc files like 
change logs. This seems to be common practice on Debian etc.

With current cygport, the following results in ChangeLog and 
ChangeLog.gz in the docdir:

src_install()
{
   ...
   dodoc ChangeLog
   gzip -9 -n "${D}/usr/share/doc/${PN}/ChangeLog"
}

The attached patch fixes this and also adds some missing documentation.

-- 
Regards,
Christian


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From 1934651b93cda92207429ac91b964cff220c76d5 Mon Sep 17 00:00:00 2001
From: Christian Franke <christian.franke@t-online.de>
Date: Fri, 1 Mar 2024 13:56:45 +0100
Subject: [PATCH] dodoc: Skip a file if a compressed version already exists

This prevents that __prepdoc() also adds the uncompressed version
of a default doc file if src_install() installed the compressed
version.  Also add missing documentation about the handling of
FILE.md, FILE.rst and FILE.txt.
---
 lib/src_install.cygpart | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/src_install.cygpart b/lib/src_install.cygpart
index 481457dc..7aca673c 100644
--- a/lib/src_install.cygpart
+++ b/lib/src_install.cygpart
@@ -162,9 +162,12 @@ docinto() {
 #  DESCRIPTION
 #  Installs the given files or directories into $D/usr/share/doc/PN/, or a
 #  subdirectory thereof specified by the previous call to docinto.
+#  If a FILE does not exist, FILE.md, FILE.rst and FILE.txt are also
+#  considered.  A FILE is skipped if the destination file or a compressed
+#  version (.bz2, .gz, .xz, .zstd) of it already exists.
 #****
 dodoc() {
-	local docdir d f i x
+	local docdir d e f i x
 
 	case "${_docinto_dir}" in
 		'')	docdir=/usr/share/doc/${PN} ;;
@@ -191,6 +194,10 @@ dodoc() {
 			do
 				if [ -s "${i}${x}" -a ! -f "${D}${docdir}/${i}${x}" ]
 				then
+					for e in bz2 gz xz zst
+					do
+						! [ -f "${D}${docdir}/${i}${x}.${e}" ] || continue 2
+					done
 					__doinstall 0644 "${i}${x}" ${docdir} || error "dodoc ${i} failed"
 					break
 				fi
-- 
2.43.0