Hello,
I found a much easier to detect the path to JAVA_HOME on Unix-like
platforms where the java command is in the search path. "java -verbose"
prints out the paths of all loaded JAR files.
Christian
---
import subprocess
import re
import os
PATH_RE = re.compile("Loaded\ .*\ from\ (.*)/jre/lib/rt.jar")
def find_java():
"""Find java home by running java -verbose
In verbose mode, java prints lines like
[Loaded java.lang.Object from
/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/rt.jar]
to stdout.
"""
try:
proc = subprocess.Popen(["java", "-verbose"],
stdout=subprocess.PIPE)
except OSError:
return None
out, err = proc.communicate()
for line in out.split("\n"):
mo = PATH_RE.search(line)
if mo is None:
continue
javahome = mo.group(1)
if os.path.isdir(javahome):
return javahome
if __name__ == "__main__":
print find_java()
---
