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Posted to commits@qpid.apache.org by ac...@apache.org on 2007/04/25 23:26:54 UTC
svn commit: r532491 - in /incubator/qpid/trunk/qpid/cpp/src:
qpid/CommonOptions.cpp qpid/CommonOptions.h qpidd.cpp
Author: aconway
Date: Wed Apr 25 14:26:53 2007
New Revision: 532491
URL: http://svn.apache.org/viewvc?view=rev&rev=532491
Log:
Added environment variables as a source of Qpid configuration.
Option "foo-bar" will be read from env. QPID_FOO_BAR if
not specified on command line.
Modified:
incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.cpp
incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.h
incubator/qpid/trunk/qpid/cpp/src/qpidd.cpp
Modified: incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.cpp
URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.cpp?view=diff&rev=532491&r1=532490&r2=532491
==============================================================================
--- incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.cpp (original)
+++ incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.cpp Wed Apr 25 14:26:53 2007
@@ -17,8 +17,28 @@
*/
#include "CommonOptions.h"
+#include <algorithm>
namespace qpid {
+
+namespace program_options {
+
+char env2optchar(char env) {
+ return (env=='_') ? '-' : tolower(env);
+}
+
+const std::string envPrefix("QPID_");
+
+std::string env2option(const std::string& env) {
+ if (env.find(envPrefix) ==0) {
+ std::string opt = env.substr(envPrefix.size());
+ std::transform(opt.begin(), opt.end(), opt.begin(), env2optchar);
+ return opt;
+ }
+ return std::string();
+}
+
+} // namespace program_options
const int CommonOptions::DEFAULT_PORT=5672;
Modified: incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.h
URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.h?view=diff&rev=532491&r1=532490&r2=532491
==============================================================================
--- incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.h (original)
+++ incubator/qpid/trunk/qpid/cpp/src/qpid/CommonOptions.h Wed Apr 25 14:26:53 2007
@@ -62,6 +62,11 @@
return new OptionValue<T>(value, argName);
}
+/** Environment-to-option name mapping.
+ * Maps env variable "QPID_SOME_VAR" to option "some-var"
+ */
+std::string env2option(const std::string& env);
+
/**
* Like boost::program_options::bool_switch but takes reference, not pointer.
*/
Modified: incubator/qpid/trunk/qpid/cpp/src/qpidd.cpp
URL: http://svn.apache.org/viewvc/incubator/qpid/trunk/qpid/cpp/src/qpidd.cpp?view=diff&rev=532491&r1=532490&r2=532491
==============================================================================
--- incubator/qpid/trunk/qpid/cpp/src/qpidd.cpp (original)
+++ incubator/qpid/trunk/qpid/cpp/src/qpidd.cpp Wed Apr 25 14:26:53 2007
@@ -54,18 +54,27 @@
void parse(int argc, char* argv[]) {
po::variables_map vm;
+ // Earlier sources get precedence.
po::store(po::parse_command_line(argc, argv, desc), vm);
+ try {
+ po::store(po::parse_environment(desc, po::env2option), vm);
+ }
+ catch (const logic_error& e) {
+ // Make it clear this is an env. var problem, the
+ // exception from boost::program_options doesn't.
+ throw logic_error(string(e.what())+" (parsing environment variables)");
+ }
po::notify(vm);
};
- void usage(std::ostream& out) const {
+ void usage(ostream& out) const {
out << "Usage: qpidd [OPTIONS]" << endl
<< "Start the Qpid AMQP broker." << endl << endl
<< desc << endl;
};
};
-std::ostream& operator<<(std::ostream& out, const QpiddOptions& config) {
+ostream& operator<<(ostream& out, const QpiddOptions& config) {
config.usage(out); return out;
}