@VisibleForTesting
static PythonVersion extractPythonVersion(Path pythonPath, ProcessExecutor.Result versionResult) {
if (versionResult.getExitCode() == 0) {
String versionString =
CharMatcher.WHITESPACE.trimFrom(
CharMatcher.WHITESPACE.trimFrom(versionResult.getStderr().get())
+ CharMatcher.WHITESPACE
.trimFrom(versionResult.getStdout().get())
.replaceAll("\u001B\\[[;\\d]*m", ""));
Matcher matcher = PYTHON_VERSION_REGEX.matcher(versionString.split("\\r?\\n")[0]);
if (!matcher.matches()) {
throw new HumanReadableException(
"`%s -V` returned an invalid version string %s", pythonPath, versionString);
}
return PythonVersion.of(matcher.group(1));
} else {
throw new HumanReadableException(versionResult.getStderr().get());
}
}
