diff options
Diffstat (limited to 'gnuradio-core/src/lib/general/gr_prefs.cc')
-rw-r--r-- | gnuradio-core/src/lib/general/gr_prefs.cc | 140 |
1 files changed, 134 insertions, 6 deletions
diff --git a/gnuradio-core/src/lib/general/gr_prefs.cc b/gnuradio-core/src/lib/general/gr_prefs.cc index 20aead8e3e..c192e25be6 100644 --- a/gnuradio-core/src/lib/general/gr_prefs.cc +++ b/gnuradio-core/src/lib/general/gr_prefs.cc @@ -25,6 +25,13 @@ #endif #include <gr_prefs.h> +#include <gr_constants.h> +#include <algorithm> + +#include <boost/filesystem/operations.hpp> +#include <boost/filesystem/path.hpp> +#include <boost/filesystem/fstream.hpp> +namespace fs = boost::filesystem; /* * Stub implementations @@ -45,44 +52,165 @@ gr_prefs::set_singleton(gr_prefs *p) s_singleton = p; } +gr_prefs::gr_prefs() +{ + _read_files(); +} + gr_prefs::~gr_prefs() { // nop } +std::vector<std::string> +gr_prefs::_sys_prefs_filenames() +{ + fs::path dir = gr_prefsdir(); + if(!fs::is_directory(dir)) + std::runtime_error("gr_prefs: preference path does not exist.\n"); + + std::vector<std::string> fnames; + fs::directory_iterator diritr(dir); + while(diritr != fs::directory_iterator()) { + fs::path p = *diritr++; + fnames.push_back(p.string()); + } + std::sort(fnames.begin(), fnames.end()); + return fnames; +} + +void +gr_prefs::_read_files() +{ + std::vector<std::string> filenames = _sys_prefs_filenames(); + std::vector<std::string>::iterator sitr; + char tmp[1024]; + for(sitr = filenames.begin(); sitr != filenames.end(); sitr++) { + fs::ifstream fin(*sitr); + while(!fin.eof()) { + fin.getline(tmp, 1024); + std::string t(tmp); + // ignore empty lines or lines of just comments + if((t.size() > 0) && (t[0] != '#')) { + // remove any comments in the line + size_t hash = t.find("#"); + + // Use hash marks at the end of each segment as a delimiter + d_configs += t.substr(0, hash) + '#'; + } + } + fin.close(); + } + + // Remove all whitespace + d_configs.erase(std::remove_if(d_configs.begin(), d_configs.end(), ::isspace), d_configs.end()); +} + bool gr_prefs::has_section(const std::string section) { - return false; + size_t t = d_configs.find("[" + section + "]#"); + return t != std::string::npos; } bool gr_prefs::has_option(const std::string section, const std::string option) { - return false; + if(has_section(section)) { + size_t sec = d_configs.find("[" + section + "]#"); + size_t opt = d_configs.find("#" + option + "=", sec); + return opt != std::string::npos; + } + else { + return false; + } } const std::string gr_prefs::get_string(const std::string section, const std::string option, const std::string default_val) { - return default_val; + std::stringstream envname; + std::string secname=section, optname=option; + + std::transform(section.begin(), section.end(), secname.begin(), ::toupper); + std::transform(option.begin(), option.end(), optname.begin(), ::toupper); + envname << "GR_CONF_" << secname << "_" << optname; + + char *v = getenv(envname.str().c_str()); + if(v) { + return std::string(v); + } + + if(has_option(section, option)) { + std::string optname = "#" + option + "="; + size_t sec = d_configs.find("[" + section + "]#"); + size_t opt = d_configs.find(optname, sec); + + size_t start = opt + optname.size(); + size_t end = d_configs.find("#", start); + size_t len = end - start; + + return d_configs.substr(start, len); + } + else { + return default_val; + } } bool gr_prefs::get_bool(const std::string section, const std::string option, bool default_val) { - return default_val; + if(has_option(section, option)) { + std::string str = get_string(section, option, ""); + if(str == "") { + return default_val; + } + std::transform(str.begin(), str.end(), str.begin(), ::tolower); + if((str == "true") || (str == "on") || (str == "1")) + return true; + else if((str == "false") || (str == "off") || (str == "0")) + return false; + else + return default_val; + } + else { + return default_val; + } } long gr_prefs::get_long(const std::string section, const std::string option, long default_val) { - return default_val; + if(has_option(section, option)) { + std::string str = get_string(section, option, ""); + if(str == "") { + return default_val; + } + std::stringstream sstr(str); + long n; + sstr >> n; + return n; + } + else { + return default_val; + } } double gr_prefs::get_double(const std::string section, const std::string option, double default_val) { - return default_val; + if(has_option(section, option)) { + std::string str = get_string(section, option, ""); + if(str == "") { + return default_val; + } + std::stringstream sstr(str); + double n; + sstr >> n; + return n; + } + else { + return default_val; + } } |