X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=bindings%2Fcxx%2FConfigKey_methods.cpp;h=d899ddcc2a18d2053470a346051e6f4e5ccca27f;hb=HEAD;hp=7f8c201ed5a8f1e649b4f4e9a452b5c8344e1dd3;hpb=6c6dd7328a83f7beb7280d57cc5e255294aba2fc;p=libsigrok.git

diff --git a/bindings/cxx/ConfigKey_methods.cpp b/bindings/cxx/ConfigKey_methods.cpp
index 7f8c201e..d899ddcc 100644
--- a/bindings/cxx/ConfigKey_methods.cpp
+++ b/bindings/cxx/ConfigKey_methods.cpp
@@ -70,6 +70,50 @@ static inline double stod( const std::string& str )
 }
 #endif
 
+#ifndef HAVE_STOUL
+
+/* Fallback implementation of stoul. */
+
+#include <cerrno>
+#include <cstdlib>
+#include <limits>
+#include <stdexcept>
+
+static inline unsigned long stoul(const std::string &str)
+{
+	char *endptr;
+	unsigned long ret;
+	errno = 0;
+	ret = std::strtoul(str.c_str(), &endptr, 10);
+	if (endptr == str.c_str())
+		throw std::invalid_argument("stoul");
+	/*
+	 * TODO Convert to a larger/wider intermediate data type?
+	 * Because after conversion into the very target type, the
+	 * range check is assumed to be ineffective.
+	 */
+	if (errno == ERANGE ||
+		ret < std::numeric_limits<unsigned long>::min() ||
+		ret > std::numeric_limits<unsigned long>::max())
+		throw std::out_of_range("stoul");
+	return ret;
+}
+#endif
+
+// Conversion from text to uint32_t, including a range check.
+// This is sigrok specific, _not_ part of any C++ standard library.
+static uint32_t stou32(const std::string &str)
+{
+	unsigned long ret;
+	errno = 0;
+	ret = stoul(str);
+	if (errno == ERANGE)
+		throw std::out_of_range("stou32");
+	if (ret > std::numeric_limits<uint32_t>::max())
+		throw std::out_of_range("stou32");
+	return ret;
+}
+
 Glib::VariantBase ConfigKey::parse_string(std::string value, enum sr_datatype dt)
 {
 	GVariant *variant;
@@ -109,6 +153,13 @@ Glib::VariantBase ConfigKey::parse_string(std::string value, enum sr_datatype dt
 				throw Error(SR_ERR_ARG);
 			}
 			break;
+		case SR_T_UINT32:
+			try {
+				variant = g_variant_new_uint32(stou32(value));
+			} catch (invalid_argument&) {
+				throw Error(SR_ERR_ARG);
+			}
+			break;
 		default:
 			throw Error(SR_ERR_BUG);
 	}