bmarwell commented on code in PR #117:
URL: https://github.com/apache/maven-wrapper/pull/117#discussion_r1474169068
##########
maven-wrapper-distribution/src/resources/only-mvnw:
##########
@@ -70,11 +70,19 @@ set_java_home() {
# hash string like Java String::hashCode
hash_string() {
- str="${1:-}" h=0
- while [ -n "$str" ]; do
- h=$(( ( h * 31 + $(LC_CTYPE=C printf %d "'$str") ) % 4294967296 ))
- str="${str#?}"
+ str="${1}"
+ length=${#str}
+ h=0
+ # strings start with index 1
+ idx=1
+
+ # lt: skip line break at end
+ while [ $idx -lt "$length" ]; do
+ char=$( printf "%s" "$str" | cut -c $idx )
Review Comment:
Fork here, alternative is to use string index (supported by ksh and bash and
zsh). However:
```
In maven-wrapper-distribution/src/resources/only-mvnw line 80:
char=${str:${idx}:1}
^-------------^ SC3057 (warning): In POSIX sh, string indexing is
undefined.
```
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