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-rw-r--r--libdevcore/CommonData.cpp23
1 files changed, 23 insertions, 0 deletions
diff --git a/libdevcore/CommonData.cpp b/libdevcore/CommonData.cpp
index 6d7c74d7..fa1a5353 100644
--- a/libdevcore/CommonData.cpp
+++ b/libdevcore/CommonData.cpp
@@ -110,3 +110,26 @@ string dev::getChecksummedAddress(string const& _addr)
}
return ret;
}
+
+bool dev::isValidHex(string const& _string)
+{
+ if (_string.substr(0, 2) != "0x")
+ return false;
+ if (_string.find_first_not_of("0123456789abcdefABCDEF", 2) != string::npos)
+ return false;
+ return true;
+}
+
+bool dev::isValidDecimal(string const& _string)
+{
+ if (_string.empty())
+ return false;
+ if (_string == "0")
+ return true;
+ // No leading zeros
+ if (_string.front() == '0')
+ return false;
+ if (_string.find_first_not_of("0123456789") != string::npos)
+ return false;
+ return true;
+}