makepkg: Better error messages for versions in (check, make, opt)depends/provides/conflicts

Given the depends

    depends=('foo>=1.2-1.par2')

and the error message

    ==> ERROR: pkgver in depends is not allowed to contain colons, forward slashes, hyphens or whitespace.

One would be lead to believe that the problem is that they gave a pkgrel in
depends at all, not that the pkgrel contains letters.

Each of the (check,make,opt)depends, conflicts, and provides linters use a
glob to trim off properly formed epoch an rel from the full version string,
and pass the remainder to check_pkgver().  This does a good job of
accepting/rejecting full versions, but doesn't do a good job of generating
good error messages when rejecting if it's because of the epoch or rel.

1. Factor out check_epoch() and check_pkgrel() from lint_epoch() and
   lint_pkgrel(), similarly to check_pkgver().
2. Add a check_fullpkgver() that takes a full [epoch:]ver[-rel] string and
   splits it in to epoch/ver/rel, and calls the appropriate check_ function
   on each.
3. Use check_fullpkgver() in the {,check,make,opt}depends, conflicts, and
   provides linters.

Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/scripts/libmakepkg/lint_pkgbuild/provides.sh.in b/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
index 102be08e..5a529728 100644
--- a/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
+++ b/scripts/libmakepkg/lint_pkgbuild/provides.sh.in
@@ -23,8 +23,8 @@ LIBMAKEPKG_LINT_PKGBUILD_PROVIDES_SH=1
 
 LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
 
+source "$LIBRARY/lint_pkgbuild/fullpkgver.sh"
 source "$LIBRARY/lint_pkgbuild/pkgname.sh"
-source "$LIBRARY/lint_pkgbuild/pkgver.sh"
 source "$LIBRARY/util/message.sh"
 source "$LIBRARY/util/pkgbuild.sh"
 
@@ -48,12 +48,10 @@ lint_provides() {
 			continue
 		fi
 		name=${provide%=*}
-		# remove optional epoch in version specifier
-		ver=${provide##$name=?(+([0-9]):)}
 		lint_one_pkgname provides "$name" || ret=1
-		if [[ $ver != $provide ]]; then
-			# remove optional pkgrel in version specifier
-			check_pkgver "${ver%-+([0-9])?(.+([0-9]))}" provides || ret=1
+		if [[ $name != $provide ]]; then
+			ver=${provide##$name=}
+			check_fullpkgver "$ver" provides || ret=1
 		fi
 	done