Introduce new PKGBUILD variable changelog

Currently, a changelog is added to a package if a specific file with a
hardcoded name exists in the PKGBUILD's directory. This approach is not
pretty and also inconsistent with the handling of install files, but it
works.

With the introduction of split PKGBUILDs, however, a drawback in this
old behavior has arisen: you only have the possibility to include one
specific changelog file in either every package defined in the PKGBUILD
or in none.

The use of an additional variable, `changelog`, works around this issue
and makes it possible to include a changelog in only some of the
packages, and besides, each package of the PKGBUILD can have its own
changelog file.

Signed-off-by: Cedric Staniewski <cedric@gmx.ca>
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

PKGBUILD-split.proto

@@ -21,6 +21,7 @@ replaces=()
 backup=()
 options=()
 install=
+changelog=
 source=($pkgbase-$pkgver.tar.gz)
 noextract=()
 md5sums=() #generate with 'makepkg -g'
@@ -44,6 +45,7 @@ package_pkg1() {
   backup=()
   options=()
   install=
+  changelog=
 
   cd "$srcdir/$pkgbase-$pkgver"
   make DESTDIR="$pkgdir/" install-pkg1

PKGBUILD.proto

@@ -21,6 +21,7 @@ replaces=()
 backup=()
 options=()
 install=
+changelog=
 source=($pkgname-$pkgver.tar.gz)
 noextract=()
 md5sums=() #generate with 'makepkg -g'

contrib/PKGBUILD.vim

@@ -115,6 +115,12 @@ syn match pbValidInstall /\([[:alnum:]]\|\$\|+\|-\|_\)*\.install/ contained
 syn match pbIllegalInstall /[^=]/ contained contains=pbValidInstall
 syn match pbInstallGroup /^install=.*/ contains=pb_k_install,pbValidInstall,pbIllegalInstall,shDeref,shDoubleQuote,shSingleQuote
 
+" changelog
+syn keyword pb_k_changelog changelog contained
+syn match pbValidChangelog /\([[:alnum:]]\|\$\|+\|-\|_\)*/ contained
+syn match pbIllegalChangelog /[^=]/ contained contains=pbValidChangelog
+syn match pbChangelogGroup /^changelog=.*/ contains=pb_k_changelog,pbValidChangelog,pbIllegalChangelog,shDeref,shDoubleQuote,shSingleQuote
+
 " source:
 " XXX remove source from shStatement, fix strange bug
 syn clear shStatement
@@ -212,6 +218,9 @@ hi def link pb_k_provides pbKeywords
 hi def link pbIllegalInstall Error
 hi def link pb_k_install pbKeywords
 
+hi def link pbIllegalChangelog Error
+hi def link pb_k_changelog pbKeywords
+
 hi def link pb_k_source pbKeywords
 hi def link pbIllegalSource Error
 

doc/PKGBUILD.5.txt

@@ -79,6 +79,12 @@ similar to `$_basekernver`.
 	be copied into the package by makepkg. It does not need to be included
 	in the source array (e.g. `install=pkgname.install`).
 
+*changelog*::
+	Specifies a changelog file that is to be included in the package.
+	This file should reside in the same directory as the PKGBUILD, and will
+	be copied into the package by makepkg. It does not need to be included
+	in the source array (e.g. `changelog=$pkgname.changelog`).
+
 *source (array)*::
 	An array of source files required to build the package. Source files
 	must either reside in the same directory as the PKGBUILD file, or be a
@@ -271,7 +277,7 @@ All options and directives for the split packages default to the global values g
 within the PKGBUILD. However, some of these can be overridden within each split
 package's packaging function. The following variables can be overridden: `pkgdesc`,
 `license`, `groups`, `depends`, `optdepends`, `provides`, `conflicts`, `replaces`,
-`backup`, `options` and `install`.
+`backup`, `options`, `install` and `changelog`.
 
 An optional global directive is available when building a split package:
 

scripts/makepkg.sh.in

@@ -47,7 +47,7 @@ pkgdir="$startdir/pkg"
 packaging_options=('strip' 'docs' 'libtool' 'emptydirs' 'zipman' 'purge')
 other_options=('ccache' 'distcc' 'makeflags' 'force')
 splitpkg_overrides=('pkgdesc' 'license' 'groups' 'depends' 'optdepends' 'provides' \
-                    'conflicts' 'replaces' 'backup' 'options' 'install')
+                    'conflicts' 'replaces' 'backup' 'options' 'install' 'changelog')
 readonly -a packaging_options other_options splitpkg_overrides
 
 # Options
@@ -991,9 +991,9 @@ create_package() {
 	fi
 
 	# do we have a changelog?
-	if [ -f "$startdir/ChangeLog" ]; then
+	if [ -n "$changelog" ]; then
 		msg2 "$(gettext "Adding package changelog...")"
-		cp "$startdir/ChangeLog" .CHANGELOG
+		cp "$startdir/$changelog" .CHANGELOG
 		comp_files="$comp_files .CHANGELOG"
 	fi
 
@@ -1055,13 +1055,17 @@ create_srcpackage() {
 			msg2 "$(gettext "Adding install script...")"
 			ln -s "${startdir}/$install" "${srclinks}/${pkgbase}/"
 		else
-			error "$(gettext "Install script %s not found.")" "$install"
+			error "$(gettext "Install scriptlet (%s) does not exist.")" "$install"
 		fi
 	fi
 
-	if [ -f ChangeLog ]; then
-		msg2 "$(gettext "Adding %s...")" "ChangeLog"
-		ln -s "${startdir}/ChangeLog" "${srclinks}/${pkgbase}"
+	if [ -n "$changelog" ]; then
+		if [ -f "$changelog" ]; then
+			msg2 "$(gettext "Adding package changelog...")"
+			ln -s "${startdir}/$changelog" "${srclinks}/${pkgbase}/"
+		else
+			error "$(gettext "Changelog file (%s) does not exist.")" "$changelog"
+		fi
 	fi
 
 	local netfile
@@ -1193,6 +1197,11 @@ check_sanity() {
 		return 1
 	fi
 
+	if [ -n "$changelog" -a ! -f "$changelog" ]; then
+		error "$(gettext "Changelog file (%s) does not exist.")" "$changelog"
+		return 1
+	fi
+
 	local valid_options=1
 	local opt known kopt
 	for opt in ${options[@]}; do
@@ -1646,7 +1655,7 @@ if [ "$ASROOT" -eq 0 \
 fi
 
 unset pkgname pkgbase pkgver pkgrel pkgdesc url license groups provides
-unset md5sums replaces depends conflicts backup source install build
+unset md5sums replaces depends conflicts backup source install changelog build
 unset makedepends optdepends options noextract
 
 BUILDFILE=${BUILDFILE:-$BUILDSCRIPT}