added amb1610 - StripQuotes()

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%402063

core/smn_string.cpp

@@ -560,6 +560,27 @@ static cell_t SplitString(IPluginContext *pContext, const cell_t *params)
 	return -1;
 }
 
+static cell_t StripQuotes(IPluginContext *pContext, const cell_t *params)
+{
+	char *text;
+	size_t length;
+
+	pContext->LocalToString(params[1], &text);
+	length = strlen(text);
+
+	if (text[0] == '"' && text[length-1] == '"')
+	{
+		/* Null-terminate */
+		text[--length] = '\0';
+		/* Move the remaining bytes (including null terminator) down by one */
+		memmove(&text[0], &text[1], length);
+
+		return 1;
+	}
+
+	return 0;	
+}
+
 REGISTER_NATIVES(basicStrings)
 {
 	{"BreakString",			BreakString},
@@ -586,6 +607,7 @@ REGISTER_NATIVES(basicStrings)
 	{"StringToIntEx",		StringToIntEx},
 	{"StringToFloat",		sm_strtofloat},
 	{"StringToFloatEx",		StringToFloatEx},
+	{"StripQuotes",			StripQuotes},
 	{"TrimString",			TrimString},
 	{"VFormat",				sm_vformat},
 	{NULL,					NULL},

plugins/include/string.inc

@@ -375,6 +375,20 @@ native bool:IsCharUpper(chr);
  */
 native bool:IsCharLower(chr);
 
+/**
+ * Strips a quote pair off a string if it exists.  That is, the following 
+ * replace rule is applied once:  $"(.*)"^ -> $\1^
+ *
+ * Note that the leading and trailing quotes will only be removed if both 
+ * exist.  Otherwise, the string is left unmodified.  This function should 
+ * be considered O(k) (all characters get shifted down).
+ *
+ * @param text			String to modify (in place).
+ * @return				True if string was modified, false if there was no 
+ *						set of quotes.
+ */
+native bool:StripQuotes(String:text[]);
+
 /**
  * Returns an uppercase character to a lowercase character.
  *