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rtl: don't try to parse empty device index values

This commit is contained in:
Dimitri Stolnikov 2013-09-28 13:46:36 +02:00
parent 2dfc73351f
commit 2d644d2eae
1 changed files with 10 additions and 6 deletions
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16
lib/rtl/rtl_source_c.cc
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@ -101,14 +101,18 @@ rtl_source_c::rtl_source_c (const std::string &args)
dict_t dict = params_to_dict(args);
if (dict.count("rtl")) {
if ( (index = rtlsdr_get_index_by_serial( dict["rtl"].c_str() )) >= 0 ) {
std::string value = dict["rtl"];
if ( (index = rtlsdr_get_index_by_serial( value.c_str() )) >= 0 ) {
dev_index = index; /* use the resolved index value */
} else { /* use the numeric value of the argument */
try {
dev_index = boost::lexical_cast< unsigned int >( dict["rtl"] );
} catch ( std::exception &ex ) {
throw std::runtime_error(
"Failed to use '" + dict["rtl"] + "' as index: " + ex.what());
if ( value.length() ) {
try {
dev_index = boost::lexical_cast< unsigned int >( value );
} catch ( std::exception &ex ) {
throw std::runtime_error(
"Failed to use '" + value + "' as index: " + ex.what());
}
}
}
}