dts-functions: add semver_version_compare to compare versions

Can be used to check whether a is '<' '==' or '>'

Signed-off-by: Michał Iwanicki <michal.iwanicki@3mdeb.com>

include/dts-functions.sh

@@ -714,16 +714,30 @@ check_flash_chip() {
 }
 
 compare_versions() {
+  # compare_versions ver1 ver2
   # return 1 if ver2 > ver1
   # return 0 otherwise
-  local ver1=
-  local ver2=
+  local ver1="$1"
+  local ver2="$2"
+
+  if [ "$(semver_version_compare "$1" "$2")" -eq -1 ]; then
+    return 1
+  else
+    return 0
+  fi
+}
+
+semver_version_compare() {
+  # semver_version_compare ver1 ver2
+  # echo 0 if ver1 == ver2, 1 if ver1 > ver2 and -1 if ver1 < ver2
+  local ver1="$1"
+  local ver2="$2"
   local compare=
   # convert version ending with '-rc<x>' to '-rc.<x>' where <x> is number
   # as semantic versioning compares whole 'rc<x>' as alphanumeric identifier
   # which results in rc2 > rc12. More information at https://semver.org/
-  ver1=$(sed -r "s/-rc([0-9]+)$/-rc.\1/" <<<"$1")
-  ver2=$(sed -r "s/-rc([0-9]+)$/-rc.\1/" <<<"$2")
+  ver1=$(sed -r "s/-rc([0-9]+)$/-rc.\1/" <<<"$ver1")
+  ver2=$(sed -r "s/-rc([0-9]+)$/-rc.\1/" <<<"$ver2")
 
   # convert SeaBIOS versioning x.x.x.x to x.x.x-x so it can be used with semver
   # checker. Also remove leading zeroes as it's not allowed in semver
@@ -736,12 +750,7 @@ compare_versions() {
   if ! python3 -m semver check "$ver1" || ! python3 -m semver check "$ver2"; then
     error_exit "Incorrect version format"
   fi
-  compare=$(python3 -m semver compare "$ver1" "$ver2")
-  if [ "$compare" -eq -1 ]; then
-    return 1
-  else
-    return 0
-  fi
+  python3 -m semver compare "$ver1" "$ver2"
 }
 
 download_bios() {