Add StringToNum implementation

PortabilityLayer/PLNumberFormatting.cpp

@@ -1,52 +1,52 @@
-#include "PLNumberFormatting.h"
+#include "PLNumberFormatting.h"
-#include "PLPasStr.h"
+#include "PLPasStr.h"
-
+
 void StringToNum(const PLPasStr &str, long *num)
-{
+{
-	if (str.Length() == 0)
+	if (str.Length() == 0)
-	{
+	{
-		num = 0;
+		num = 0;
-		return;
+		return;
-	}
+	}
-
+
-	const size_t len = str.Length();
+	const size_t len = str.Length();
-	const char *chars = str.Chars();
+	const char *chars = str.Chars();
-	const char *charsEnd = chars + len;
+	const char *charsEnd = chars + len;
-
+
-	long result = 0;
+	long result = 0;
-
+
-	if (chars[0] == '-')
+	if (chars[0] == '-')
-	{
+	{
-		chars++;
+		chars++;
-
+
-		while (chars != charsEnd)
+		while (chars != charsEnd)
-		{
+		{
-			const char c = *chars++;
+			const char c = *chars++;
-
+
-			if (c < '0' || c > '9')
+			if (c < '0' || c > '9')
-			{
+			{
-				num = 0;
+				num = 0;
-				return;
+				return;
-			}
+			}
-
+
-			result = result * 10 - (c - '0');
+			result = result * 10 - (c - '0');
-		}
+		}
-	}
+	}
-	else
+	else
-	{
+	{
-		while (chars != charsEnd)
+		while (chars != charsEnd)
-		{
+		{
-			const char c = *chars++;
+			const char c = *chars++;
-
+
-			if (c < '0' || c > '9')
+			if (c < '0' || c > '9')
-			{
+			{
-				num = 0;
+				num = 0;
-				return;
+				return;
-			}
+			}
-
+
-			result = result * 10 + (c - '0');
+			result = result * 10 + (c - '0');
-		}
+		}
-	}
+	}
-
+
-	*num = result;
+	*num = result;
-}
+}