class-version.sh: work around new hexdump bug

ctrueden · ctrueden · commit 5843231594c5 · 2022-09-12T15:45:07.000-05:00
It seems that newer versions of hexdump do not allow seeking from stdin anymore? At least, that's what others online have concluded: https://www.medo64.com/2021/06/hexdumps-illegal-seek/ Fortunately, in this case, we can just decode all 8 of the first bytes, and then take the last 4.
diff --git a/ci-setup-github-actions.sh b/ci-setup-github-actions.sh
@@ -5,7 +5,8 @@
 #
 
 echo "BUILD_REPOSITORY=https://github.com/${GITHUB_REPOSITORY}"
-echo "BUILD_OS=${RUNNER_OS}" 
+echo "BUILD_OS=${RUNNER_OS}"
+echo "BUILD_DEPLOY_FORBIDDEN=..." # CTR START HERE - use GITHUB-specific env vars set upon PR to decide this
 
 echo "BUILD_REPOSITORY=https://github.com/${GITHUB_REPOSITORY}" >> $GITHUB_ENV
 echo "BUILD_OS=${RUNNER_OS}" >> $GITHUB_ENV
diff --git a/class-version.sh b/class-version.sh
@@ -4,7 +4,7 @@
 
 class_version() {
   # extract bytes 4-7
-  info=$(head -c 8 | hexdump -s 4 -e '4/1 "%d\n" "\n"')
+  info=$(head -c 8 | hexdump -e '4/1 "%d\n" "\n"' | tail -n4)
   minor1="$(echo "$info" | sed -n 1p)"
   minor2="$(echo "$info" | sed -n 2p)"
   major1="$(echo "$info" | sed -n 3p)"

Original file line number	Diff line number	Diff line change
`@@ -5,7 +5,8 @@`
`5`	`5`	`#`
`6`	`6`
`7`	`7`	`echo "BUILD_REPOSITORY=https://github.com/${GITHUB_REPOSITORY}"`
`8`		`-echo "BUILD_OS=${RUNNER_OS}"`
	`8`	`+echo "BUILD_OS=${RUNNER_OS}"`
	`9`	`+echo "BUILD_DEPLOY_FORBIDDEN=..." # CTR START HERE - use GITHUB-specific env vars set upon PR to decide this`
`9`	`10`
`10`	`11`	`echo "BUILD_REPOSITORY=https://github.com/${GITHUB_REPOSITORY}" >> $GITHUB_ENV`
`11`	`12`	`echo "BUILD_OS=${RUNNER_OS}" >> $GITHUB_ENV`