include/err.sh: checkgit,checkversion

call these as functions, instead of executing scripts

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/err.sh

@@ -8,6 +8,37 @@ xx_() {
 	[ $# -lt 1 ] || ${@} || fail "non-zero exit status: ${@}"
 }
 
+check_git()
+{
+	which git 1>/dev/null 2>/dev/null || \
+	    err "git not installed. please install git-scm."
+	git config --global user.name 1>/dev/null 2>/dev/null || \
+	    err "git config --global user.name \"John Doe\""
+	git config --global user.email 1>/dev/null 2>/dev/null || \
+	    err "git config --global user.email \"john.doe@example.com\""
+}
+
+check_project()
+{
+	read project < projectname
+
+	[ -f version ] && read version < version
+	version_="${version}"
+	[ ! -e ".git" ] || version="$(git describe --tags HEAD 2>&1)" || \
+	    version="git-$(git rev-parse HEAD 2>&1)" || version="${version_}"
+
+	[ -f versiondate ] && read versiondate < versiondate
+	versiondate_="${versiondate}"
+	[ ! -e ".git" ] || versiondate="$(git show --no-patch --no-notes \
+	    --pretty='%ct' HEAD)" || versiondate="${versiondate_}"
+
+	[ -z ${versiondate} ] && err "Unknown version date"
+	[ -z ${version} ] && err "Unknown version"
+
+	printf "%s\n" "${version}" > version
+	printf "%s\n" "${versiondate}" > versiondate
+}
+
 setvars()
 {
 	_setvars=""