From 94ccf6d7e243204c4b4aa1cd732f13c99530cf20 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <goliath@infraroot.at>
Date: Sat, 30 Mar 2019 10:40:54 +0100
Subject: [PATCH] cleanup: add common implementation of check_update

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
---
 pkg/bash/build          |  4 +---
 pkg/bbstatic/build      |  5 +----
 pkg/btrfs-progs/build   |  5 +----
 pkg/coreutils/build     |  4 +---
 pkg/dhcpcd/build        |  4 +---
 pkg/diffutils/build     |  4 +---
 pkg/dnsmasq/build       |  4 +---
 pkg/dosfstools/build    |  7 +++----
 pkg/ethtool/build       |  4 +---
 pkg/findutils/build     |  4 +---
 pkg/gawk/build          |  4 +---
 pkg/gmp/build           |  5 +----
 pkg/grep/build          |  4 +---
 pkg/gzip/build          |  4 +---
 pkg/hostapd/build       |  4 +---
 pkg/inetutils/build     |  4 +---
 pkg/iproute2/build      |  4 +---
 pkg/iw/build            |  4 +---
 pkg/kbd/build           |  4 +---
 pkg/kmod/build          |  4 +---
 pkg/ldns/build          |  4 +---
 pkg/less/build          |  4 +---
 pkg/libbsd/build        |  4 +---
 pkg/libmnl/build        |  4 +---
 pkg/libnftnl/build      |  4 +---
 pkg/libnl3/build        |  4 +---
 pkg/libpcap/build       |  4 +---
 pkg/libseccomp/build    |  5 ++---
 pkg/lzo/build           |  4 +---
 pkg/musl/build          |  4 +---
 pkg/nano/build          |  4 +---
 pkg/ncurses/build       |  4 +---
 pkg/nginx/build         |  4 +---
 pkg/pcre/build          |  4 +---
 pkg/procps-ng/build     |  4 +---
 pkg/psmisc/build        |  4 +---
 pkg/readline/build      |  4 +---
 pkg/sed/build           |  4 +---
 pkg/shadow/build        |  6 ++----
 pkg/tar/build           |  4 +---
 pkg/tc-binutils/build   |  4 +---
 pkg/tc-mpc/build        |  4 +---
 pkg/tc-mpfr/build       |  4 +---
 pkg/tc-pkg-config/build |  4 +---
 pkg/tcpdump/build       |  4 +---
 pkg/unbound/build       |  4 +---
 pkg/xz/build            |  4 +---
 pkg/zlib/build          |  4 +---
 util/version.sh         | 10 ++++++++++
 49 files changed, 62 insertions(+), 149 deletions(-)

diff --git a/pkg/bash/build b/pkg/bash/build
index 7a5f7d2..3d230ee 100755
--- a/pkg/bash/build
+++ b/pkg/bash/build
@@ -26,7 +26,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">bash-[0-9.]*tar.gz<" | \
-	    sed 's/>bash-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "bash-" "tar.gz"
 }
diff --git a/pkg/bbstatic/build b/pkg/bbstatic/build
index b2e262c..36207f2 100755
--- a/pkg/bbstatic/build
+++ b/pkg/bbstatic/build
@@ -30,8 +30,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | \
-	    grep -o ">busybox-[0-9.]*tar.bz2<" | \
-	    sed 's/>busybox-//g' | sed 's/.tar.bz2<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "busybox-" "tar.bz2"
 }
diff --git a/pkg/btrfs-progs/build b/pkg/btrfs-progs/build
index e59f63e..b6e3c2b 100755
--- a/pkg/btrfs-progs/build
+++ b/pkg/btrfs-progs/build
@@ -25,8 +25,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | \
-	    grep -o ">btrfs-progs-v[0-9.]*tar.xz<" | \
-	    sed 's/>btrfs-progs-v//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "btrfs-progs-v" "tar.xz"
 }
diff --git a/pkg/coreutils/build b/pkg/coreutils/build
index 0a3415d..2d960c0 100755
--- a/pkg/coreutils/build
+++ b/pkg/coreutils/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">coreutils-[0-9.]*tar.xz<" | \
-	    sed 's/>coreutils-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "coreutils-" "tar.xz"
 }
diff --git a/pkg/dhcpcd/build b/pkg/dhcpcd/build
index 28a8ae5..91d414a 100755
--- a/pkg/dhcpcd/build
+++ b/pkg/dhcpcd/build
@@ -27,7 +27,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">dhcpcd-[0-9.]*tar.xz<" | \
-	    sed 's/>dhcpcd-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "dhcpcd-" "tar.xz"
 }
diff --git a/pkg/diffutils/build b/pkg/diffutils/build
index 386dce1..cdca8e5 100755
--- a/pkg/diffutils/build
+++ b/pkg/diffutils/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">diffutils-[0-9.]*tar.xz<" | \
-	    sed 's/>diffutils-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "diffutils-" "tar.xz"
 }
diff --git a/pkg/dnsmasq/build b/pkg/dnsmasq/build
index a8727f2..3e3b4d5 100644
--- a/pkg/dnsmasq/build
+++ b/pkg/dnsmasq/build
@@ -34,7 +34,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">dnsmasq-[0-9.]*tar.xz<" | \
-	    sed 's/>dnsmasq-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "dnsmasq-" "tar.xz"
 }
diff --git a/pkg/dosfstools/build b/pkg/dosfstools/build
index 451c3e7..eb81736 100755
--- a/pkg/dosfstools/build
+++ b/pkg/dosfstools/build
@@ -20,8 +20,7 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "https://github.com/dosfstools/dosfstools/releases" |\
-	    grep -o "dosfstools-[0-9.]*tar.xz" | \
-	    sed 's/dosfstools-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple \
+		"https://github.com/dosfstools/dosfstools/releases" \
+		"dosfstools-" "tar.xz"
 }
\ No newline at end of file
diff --git a/pkg/ethtool/build b/pkg/ethtool/build
index b786587..1ecd0b2 100755
--- a/pkg/ethtool/build
+++ b/pkg/ethtool/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o "ethtool-[0-9.]*tar.xz" | \
-	    sed 's/ethtool-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "ethtool-" "tar.xz"
 }
diff --git a/pkg/findutils/build b/pkg/findutils/build
index b437455..fc584de 100755
--- a/pkg/findutils/build
+++ b/pkg/findutils/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">findutils-[0-9.]*tar.gz<" | \
-	    sed 's/>findutils-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "findutils-" "tar.gz"
 }
diff --git a/pkg/gawk/build b/pkg/gawk/build
index a843af9..e8da6a7 100755
--- a/pkg/gawk/build
+++ b/pkg/gawk/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">gawk-[0-9.]*tar.xz<" | \
-	    sed 's/>gawk-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "gawk-" "tar.xz"
 }
diff --git a/pkg/gmp/build b/pkg/gmp/build
index b60d604..7fecb38 100755
--- a/pkg/gmp/build
+++ b/pkg/gmp/build
@@ -21,9 +21,6 @@ deploy() {
 	cp $SCRIPTDIR/pkg/$PKGNAME/*.{files,desc} "$PKGDEPLOYDIR"
 }
 
-
 check_update() {
-	curl --silent -L "$URL" | grep -o ">gmp-[0-9.]*tar.bz2<" | \
-	    sed 's/>gmp-//g' | sed 's/.tar.bz2<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "gmp-" "tar.bz2"
 }
diff --git a/pkg/grep/build b/pkg/grep/build
index 6b49bfa..a85b636 100755
--- a/pkg/grep/build
+++ b/pkg/grep/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">grep-[0-9.]*tar.xz<" | \
-	    sed 's/>grep-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "grep-" "tar.xz"
 }
diff --git a/pkg/gzip/build b/pkg/gzip/build
index 1ee884f..99e3555 100755
--- a/pkg/gzip/build
+++ b/pkg/gzip/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">gzip-[0-9.]*tar.xz<" | \
-	    sed 's/>gzip-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "gzip-" "tar.xz"
 }
diff --git a/pkg/hostapd/build b/pkg/hostapd/build
index ef561c3..0464eda 100755
--- a/pkg/hostapd/build
+++ b/pkg/hostapd/build
@@ -36,7 +36,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">hostapd-[0-9.]*tar.gz<" | \
-	    sed 's/>hostapd-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "hostapd-" "tar.gz"
 }
diff --git a/pkg/inetutils/build b/pkg/inetutils/build
index 9f9a614..914db11 100755
--- a/pkg/inetutils/build
+++ b/pkg/inetutils/build
@@ -24,7 +24,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">inetutils-[0-9.]*tar.xz<" | \
-	    sed 's/>inetutils-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "inetutils-" "tar.xz"
 }
diff --git a/pkg/iproute2/build b/pkg/iproute2/build
index d1d58f8..0203937 100755
--- a/pkg/iproute2/build
+++ b/pkg/iproute2/build
@@ -32,7 +32,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o "iproute2-[0-9.]*tar.xz" | \
-	    sed 's/iproute2-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "iproute2-" "tar.xz"
 }
diff --git a/pkg/iw/build b/pkg/iw/build
index 91be0d1..d2d16a1 100755
--- a/pkg/iw/build
+++ b/pkg/iw/build
@@ -36,7 +36,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o "iw-[0-9.]*tar.xz" | \
-	    sed 's/iw-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "iw-" "tar.xz"
 }
diff --git a/pkg/kbd/build b/pkg/kbd/build
index 1252aa1..5b35345 100755
--- a/pkg/kbd/build
+++ b/pkg/kbd/build
@@ -22,7 +22,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">kbd-[0-9.]*tar.xz<" | \
-	    sed 's/>kbd-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "kbd-" "tar.xz"
 }
diff --git a/pkg/kmod/build b/pkg/kmod/build
index c519624..a9d0b8d 100644
--- a/pkg/kmod/build
+++ b/pkg/kmod/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">kmod-[0-9.]*tar.xz<" | \
-	    sed 's/>kmod-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "kmod-" "tar.xz"
 }
diff --git a/pkg/ldns/build b/pkg/ldns/build
index 5407286..b1ae1e8 100755
--- a/pkg/ldns/build
+++ b/pkg/ldns/build
@@ -23,7 +23,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o "ldns-[0-9.]*tar.gz" | \
-	    sed 's/ldns-//g' | sed 's/.tar.gz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "ldns-" "tar.gz"
 }
diff --git a/pkg/less/build b/pkg/less/build
index a8d4ecc..e213ccb 100755
--- a/pkg/less/build
+++ b/pkg/less/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">less-[0-9.]*tar.gz<" | \
-	    sed 's/>less-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "less-" "tar.gz"
 }
diff --git a/pkg/libbsd/build b/pkg/libbsd/build
index 9ce8608..eb95efe 100644
--- a/pkg/libbsd/build
+++ b/pkg/libbsd/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">libbsd-[0-9.]*tar.xz<" | \
-	    sed 's/>libbsd-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "libbsd-" "tar.xz"
 }
diff --git a/pkg/libmnl/build b/pkg/libmnl/build
index b87d57f..e0b11f2 100644
--- a/pkg/libmnl/build
+++ b/pkg/libmnl/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">libmnl-[0-9.]*tar.bz2<" | \
-	    sed 's/>libmnl-//g' | sed 's/.tar.bz2<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "libmnl-" "tar.bz2"
 }
diff --git a/pkg/libnftnl/build b/pkg/libnftnl/build
index 7773107..bc6030b 100644
--- a/pkg/libnftnl/build
+++ b/pkg/libnftnl/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">libnftnl-[0-9.]*tar.bz2<" | \
-	    sed 's/>libnftnl-//g' | sed 's/.tar.bz2<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "libnftnl-" "tar.bz2"
 }
diff --git a/pkg/libnl3/build b/pkg/libnl3/build
index a9a497a..8314aef 100644
--- a/pkg/libnl3/build
+++ b/pkg/libnl3/build
@@ -22,7 +22,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">libnl-[0-9.]*tar.gz<" | \
-	    sed 's/>libnl-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "libnl-" "tar.gz"
 }
diff --git a/pkg/libpcap/build b/pkg/libpcap/build
index dd9c557..eb37c85 100755
--- a/pkg/libpcap/build
+++ b/pkg/libpcap/build
@@ -24,7 +24,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">libpcap-[0-9.]*tar.gz<" | \
-	    sed 's/>libpcap-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "libpcap-" "tar.gz"
 }
diff --git a/pkg/libseccomp/build b/pkg/libseccomp/build
index 764bac9..bc73880 100644
--- a/pkg/libseccomp/build
+++ b/pkg/libseccomp/build
@@ -19,7 +19,6 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L https://github.com/seccomp/libseccomp/releases | \
-	    grep -o "libseccomp-[0-9.]*tar.gz" | sed 's/libseccomp-//g' | \
-	    sed 's/.tar.gz//g' | verson_find_greatest "$VERSION"
+	check_update_simple "https://github.com/seccomp/libseccomp/releases" \
+			    "libseccomp-" "tar.gz"
 }
diff --git a/pkg/lzo/build b/pkg/lzo/build
index c05cac9..8b1ea83 100644
--- a/pkg/lzo/build
+++ b/pkg/lzo/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">lzo-[0-9.]*tar.gz<" | \
-	    sed 's/>lzo-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "lzo-" "tar.gz"
 }
diff --git a/pkg/musl/build b/pkg/musl/build
index 94befef..b2fe192 100755
--- a/pkg/musl/build
+++ b/pkg/musl/build
@@ -68,7 +68,5 @@ _EOF
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">musl-[0-9.]*tar.gz<" | \
-	    sed 's/>musl-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "musl-" "tar.gz"
 }
diff --git a/pkg/nano/build b/pkg/nano/build
index 27094ff..40efced 100644
--- a/pkg/nano/build
+++ b/pkg/nano/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">nano-[0-9.]*tar.xz<" | \
-	    sed 's/>nano-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "nano-" "tar.xz"
 }
diff --git a/pkg/ncurses/build b/pkg/ncurses/build
index a84711b..a31180a 100755
--- a/pkg/ncurses/build
+++ b/pkg/ncurses/build
@@ -27,7 +27,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">ncurses-[0-9.]*tar.gz<" | \
-	    sed 's/>ncurses-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "ncurses-" "tar.gz"
 }
diff --git a/pkg/nginx/build b/pkg/nginx/build
index 412f392..6001734 100755
--- a/pkg/nginx/build
+++ b/pkg/nginx/build
@@ -101,7 +101,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">nginx-[0-9.]*tar.gz<" | \
-	    sed 's/>nginx-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "nginx-" "tar.gz"
 }
diff --git a/pkg/pcre/build b/pkg/pcre/build
index e68c130..e14a327 100755
--- a/pkg/pcre/build
+++ b/pkg/pcre/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">pcre-[0-9.]*tar.bz2<" | \
-	    sed 's/>pcre-//g' | sed 's/.tar.bz2<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "pcre-" "tar.bz2"
 }
diff --git a/pkg/procps-ng/build b/pkg/procps-ng/build
index f372f56..cb243ad 100755
--- a/pkg/procps-ng/build
+++ b/pkg/procps-ng/build
@@ -23,7 +23,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">procps-ng-[0-9.]*tar.xz<" | \
-	    sed 's/>procps-ng-//g' | sed 's/.tar.xz<//g' |\
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "procps-ng-" "tar.xz"
 }
diff --git a/pkg/psmisc/build b/pkg/psmisc/build
index c0fca61..34ba74a 100755
--- a/pkg/psmisc/build
+++ b/pkg/psmisc/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o ">psmisc-[0-9.]*tar.xz<" | \
-	    sed 's/>psmisc-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "psmisc-" "tar.xz"
 }
diff --git a/pkg/readline/build b/pkg/readline/build
index 124a269..b46b58a 100755
--- a/pkg/readline/build
+++ b/pkg/readline/build
@@ -22,7 +22,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o ">readline-[0-9.]*tar.gz<" | \
-	    sed 's/>readline-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "readline-" "tar.gz"
 }
diff --git a/pkg/sed/build b/pkg/sed/build
index a90b226..09af3c8 100755
--- a/pkg/sed/build
+++ b/pkg/sed/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o ">sed-[0-9.]*tar.xz<" | \
-	    sed 's/>sed-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "sed-" "tar.xz"
 }
diff --git a/pkg/shadow/build b/pkg/shadow/build
index 50519d5..7b0145c 100755
--- a/pkg/shadow/build
+++ b/pkg/shadow/build
@@ -29,8 +29,6 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L https://github.com/shadow-maint/shadow/releases | \
-	    grep -o "shadow-[0-9.]*tar.xz" | \
-	    sed 's/shadow-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "https://github.com/shadow-maint/shadow/releases" \
+			    "shadow-" "tar.xz"
 }
diff --git a/pkg/tar/build b/pkg/tar/build
index cec3429..0b53710 100755
--- a/pkg/tar/build
+++ b/pkg/tar/build
@@ -20,7 +20,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L $URL | grep -o ">tar-[0-9.]*tar.xz<" | \
-	    sed 's/>tar-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "tar-" "tar.xz"
 }
diff --git a/pkg/tc-binutils/build b/pkg/tc-binutils/build
index 6a65e97..7202743 100755
--- a/pkg/tc-binutils/build
+++ b/pkg/tc-binutils/build
@@ -49,7 +49,5 @@ _EOF
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">binutils-[0-9.]*tar.xz<" | \
-	    sed 's/>binutils-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "binutils-" "tar.xz"
 }
diff --git a/pkg/tc-mpc/build b/pkg/tc-mpc/build
index f6352eb..1deb925 100755
--- a/pkg/tc-mpc/build
+++ b/pkg/tc-mpc/build
@@ -19,7 +19,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">mpc-[0-9.]*tar.gz<" | \
-	    sed 's/>mpc-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "mpc-" "tar.gz"
 }
\ No newline at end of file
diff --git a/pkg/tc-mpfr/build b/pkg/tc-mpfr/build
index 402543b..2f53584 100755
--- a/pkg/tc-mpfr/build
+++ b/pkg/tc-mpfr/build
@@ -19,7 +19,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">mpfr-[0-9.]*tar.xz<" | \
-	    sed 's/>mpfr-//g' | sed 's/.tar.xz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "mpfr-" "tar.xz"
 }
\ No newline at end of file
diff --git a/pkg/tc-pkg-config/build b/pkg/tc-pkg-config/build
index a7eebe6..ebd739f 100755
--- a/pkg/tc-pkg-config/build
+++ b/pkg/tc-pkg-config/build
@@ -31,7 +31,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">pkg-config-[0-9.]*tar.gz<" | \
-	    sed 's/>pkg-config-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "pkg-config-" "tar.gz"
 }
\ No newline at end of file
diff --git a/pkg/tcpdump/build b/pkg/tcpdump/build
index 725c468..72abcf6 100755
--- a/pkg/tcpdump/build
+++ b/pkg/tcpdump/build
@@ -22,7 +22,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">tcpdump-[0-9.]*tar.gz<" | \
-	    sed 's/>tcpdump-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "tcpdump-" "tar.gz"
 }
diff --git a/pkg/unbound/build b/pkg/unbound/build
index 241a327..ac8df97 100644
--- a/pkg/unbound/build
+++ b/pkg/unbound/build
@@ -42,7 +42,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o ">unbound-[0-9.]*tar.gz<" | \
-	    sed 's/>unbound-//g' | sed 's/.tar.gz<//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "unbound-" "tar.gz"
 }
diff --git a/pkg/xz/build b/pkg/xz/build
index b661f6b..9eff034 100644
--- a/pkg/xz/build
+++ b/pkg/xz/build
@@ -21,7 +21,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o "xz-[0-9.]*tar.xz" | \
-	    sed 's/xz-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "xz-" "tar.xz"
 }
diff --git a/pkg/zlib/build b/pkg/zlib/build
index 8cdd178..9dbff72 100644
--- a/pkg/zlib/build
+++ b/pkg/zlib/build
@@ -32,7 +32,5 @@ deploy() {
 }
 
 check_update() {
-	curl --silent -L "$URL" | grep -o "xz-[0-9.]*tar.xz" | \
-	    sed 's/zlib-//g' | sed 's/.tar.xz//g' | \
-	    verson_find_greatest "$VERSION"
+	check_update_simple "$URL" "zlib-" "tar.xz"
 }
diff --git a/util/version.sh b/util/version.sh
index 1c6131e..6ac7b81 100644
--- a/util/version.sh
+++ b/util/version.sh
@@ -31,3 +31,13 @@ verson_find_greatest() {
 		echo "$found"
 	fi
 }
+
+check_update_simple() {
+	local url="$1"
+	local prefix="$2"
+	local suffix="$3"
+
+	curl --silent -L "$url" | grep -o ">$prefix-[0-9.]*$suffix<" | \
+	    sed 's/>$prefix-//g' | sed 's/.$suffix<//g' | \
+	    verson_find_greatest "$VERSION"
+}