New JVM selection scripts.

1 files changed, 36 insertions, 0 deletions

diff --git a/share/java-common.sh b/share/java-common.sh
new file mode 100644
index 0000000..c0db858
--- /dev/null
+++ b/share/java-common.sh
@@ -0,0 +1,36 @@
+function jvm_scan_file() {
+    file="$1"
+
+    grep -v '#' "$file" | while read jvm; do
+        if [ -n "$jvm" -a -x "$jvm/bin/java" ]; then
+            echo -n $jvm
+            return
+        fi
+    done
+}
+
+function jvm_find() {
+    local jvm
+
+    if [ -n "$JAVA_HOME" ]; then
+        jvm="$JAVA_HOME"
+    fi
+
+    for file in \
+        "$HOME/.jvm.d/$1" \
+        "$HOME/.jvm" \
+        "/etc/jvm.d/$1" \
+        "/etc/jvm"; do \
+        if [ -z "$jvm" ]; then
+            if [ -r "$file" ]; then
+                jvm="$(jvm_scan_file "$file")"
+            fi
+        fi
+    done
+
+    echo -n "$jvm"
+}
+
+function jvm_config() {
+    echo JAVA_HOME="$(jvm_find "$1")"
+}