bmarwell commented on code in PR #117:
URL: https://github.com/apache/maven-wrapper/pull/117#discussion_r1474180787
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maven-wrapper-distribution/src/resources/only-mvnw:
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@@ -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:
According to Ubuntu, they still use Dash as default symlink target of
`/bin/sh` which does not know about variable substitution:
https://wiki.ubuntu.com/DashAsBinSh
They recommend using awk (but cut is enough here)
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