From d0cfa8d4724bd5f5f018d923d62d9bea87cdcb80 Mon Sep 17 00:00:00 2001 From: Alan Conway Date: Wed, 25 Apr 2007 21:26:53 +0000 Subject: 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. git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@532491 13f79535-47bb-0310-9956-ffa450edef68 --- cpp/src/qpid/CommonOptions.cpp | 20 ++++++++++++++++++++ cpp/src/qpid/CommonOptions.h | 5 +++++ 2 files changed, 25 insertions(+) (limited to 'cpp/src/qpid') diff --git a/cpp/src/qpid/CommonOptions.cpp b/cpp/src/qpid/CommonOptions.cpp index 8efb3a6baa..d4db3660bd 100644 --- a/cpp/src/qpid/CommonOptions.cpp +++ b/cpp/src/qpid/CommonOptions.cpp @@ -17,9 +17,29 @@ */ #include "CommonOptions.h" +#include 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; CommonOptions::CommonOptions() : trace(false), port(DEFAULT_PORT) {} diff --git a/cpp/src/qpid/CommonOptions.h b/cpp/src/qpid/CommonOptions.h index 2a4b9798cd..beaeb114e6 100644 --- a/cpp/src/qpid/CommonOptions.h +++ b/cpp/src/qpid/CommonOptions.h @@ -62,6 +62,11 @@ value_semantic* optValue(T& value, const char* arg) { return new OptionValue(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. */ -- cgit v1.2.1