ByteString::IsNumericAscii->comphelper::string::isAsciiDecimalString

shrink ByteString api, remove need for intermediate OString/ByteString
with random-ish encoding solely for check

2 files changed, 44 insertions, 0 deletions

diff --git a/comphelper/inc/comphelper/string.hxx b/comphelper/inc/comphelper/string.hxx
index e71a008c5e3e..dd3261bef085 100644
--- a/comphelper/inc/comphelper/string.hxx
+++ b/comphelper/inc/comphelper/string.hxx
@@ -193,6 +193,27 @@ public:
     const ::com::sun::star::lang::Locale& getLocale() const { return m_aLocale; }
 };
 
+/** Determine if an OString contains solely ascii numeric digits
+
+    @param rString  An OString
+
+    @return         false if string contains any characters outside
+                    the ascii '0'-'9' range
+                    true otherwise, including for empty string
+ */
+COMPHELPER_DLLPUBLIC bool isAsciiDecimalString(const rtl::OString &rString);
+
+/** Determine if an OUString contains solely ascii numeric digits
+
+    @param rString  An OUString
+
+    @return         false if string contains any characters outside
+                    the ascii '0'-'9' range
+                    true otherwise, including for empty string
+ */
+COMPHELPER_DLLPUBLIC bool isAsciiDecimalString(const rtl::OUString &rString);
+
+
 } }
 
 #endif
diff --git a/comphelper/source/misc/string.cxx b/comphelper/source/misc/string.cxx
index 18ad6ad4fe9f..249ef2e87800 100644
--- a/comphelper/source/misc/string.cxx
+++ b/comphelper/source/misc/string.cxx
@@ -308,6 +308,29 @@ NaturalStringSorter::NaturalStringSorter(
             uno::UNO_QUERY_THROW);
 }
 
+namespace
+{
+    template <typename T> bool tmpl_isAsciiDecimalString(const T &rString)
+    {
+        for (sal_Int32 i = 0; i < rString.getLength(); ++i)
+        {
+            if ((rString[i] < '0') || (rString[i] > '9'))
+                return false;
+        }
+        return true;
+    }
+}
+
+bool isAsciiDecimalString(const rtl::OString &rString)
+{
+    return tmpl_isAsciiDecimalString(rString);
+}
+
+bool isAsciiDecimalString(const rtl::OUString &rString)
+{
+    return tmpl_isAsciiDecimalString(rString);
+}
+
 } }
 
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