update: add local-overlay

2024-11-05 09:39:28 -05:00
parent 09c7389823
commit dfc3187980
16 changed files with 568 additions and 0 deletions
@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+
+# Comparison expressions for semantic versions.
+# only supports semver standard MAJOR.MINOR.PATCH syntax;
+# pre-release or build-metadata extensions have undefined behavior.
+
+set -o errexit
+set -o pipefail
+
+function usage() {
+  echo "Comparison expressions for semantic versions."
+  echo
+  echo "usage: vercmp VERSION_A OPERATOR VERSION_B"
+  echo
+  echo "OPERATORS"
+  echo
+  echo "  lt   - Less than"
+  echo "  lteq - Less than or equal to"
+  echo "  eq   - Equal to"
+  echo "  gteq - Grater than or equal to"
+  echo "  gt   - Greater than"
+  echo
+}
+
+if [ "$#" -ne 3 ]; then
+  usage
+  exit 1
+fi
+
+LEFT="$1"
+OPERATOR="$2"
+RIGHT="$3"
+
+if [ "$LEFT" = "$RIGHT" ]; then
+  COMPARISON=0
+else
+  SORTED=($(for VER in "$LEFT" "$RIGHT"; do echo "$VER"; done | sort -V))
+  if [ "${SORTED[0]}" = "$LEFT" ]; then
+    COMPARISON=-1
+  else
+    COMPARISON=1
+  fi
+fi
+
+OUTCOME=false
+
+case $OPERATOR in
+  lt)
+    if [ "$COMPARISON" -eq -1 ]; then
+      OUTCOME=true
+    fi
+    ;;
+
+  lteq)
+    if [ "$COMPARISON" -lt 1 ]; then
+      OUTCOME=true
+    fi
+    ;;
+
+  eq)
+    if [ "$COMPARISON" -eq 0 ]; then
+      OUTCOME=true
+    fi
+    ;;
+
+  gteq)
+    if [ "$COMPARISON" -gt -1 ]; then
+      OUTCOME=true
+    fi
+    ;;
+
+  gt)
+    if [ "$COMPARISON" -eq 1 ]; then
+      OUTCOME=true
+    fi
+    ;;
+
+  *)
+    usage
+    exit 1
+    ;;
+esac
+
+VERCMP_QUIET="${VERCMP_QUIET:-false}"
+if [ ! "$VERCMP_QUIET" = "true" ]; then
+  echo "$OUTCOME"
+fi
+
+if [ "$OUTCOME" = "true" ]; then
+  exit 0
+else
+  exit 1
+fi