1 files changed, 75 insertions, 0 deletions
diff --git a/scan.h b/scan.h
new file mode 100644
index 0000000..a780ed6
--- /dev/null
+++ b/scan.h
@@ -0,0 +1,75 @@
+/*
+ * scan.h: A plugin for the Video Disk Recorder
+ *
+ * See the README file for copyright information and how to reach the author.
+ *  (c) 2007-2013 Jörg Wendel
+ *
+ * This code is distributed under the terms and conditions of the
+ * GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
+ *
+ */
+
+//***************************************************************************
+// Includes
+//***************************************************************************
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <common.h>
+
+//***************************************************************************
+// Token Scanner
+//***************************************************************************
+
+class Scan
+{
+   public:
+
+      Scan(const char* buf, int np = yes)  { asprintf(&buffer, "%s", buf); reset(); allowNumPrefix = np; }
+      ~Scan()                     { free(buffer); }
+
+      void reset()                { p = buffer; isStr = no; }
+      const char* all()           { return buffer; }
+      const char* lastString()    { return _last; }
+      const char* lastIdent()     { return _last; }
+      int lastInt()               { return atoi(_last); }
+      int isEmpty()               { return _last[0] == 0; }
+      int isString()              { return isStr; }
+      int isIdent()               { return !isStr && isIdent(*_last); }
+      int isNum()                 { return !isStr && isNum(*_last); }
+      int isLogical()             { return !isStr && isLogical(*_last); }
+      int isOperator()            { return !isStr && isOperator(*_last); }
+      int hasValue(const char* v) { return strcmp(Str::notNull(v), Str::notNull(_last)) == 0; }
+
+      const char* next()          { return p; }
+
+      int eat(int aANP = na);
+
+   private:
+
+      void skipWs()            { while (*p && isWhiteSpace(*p)) p++; }
+
+      int isDelimiter(char c)  { return strchr(delimiters, c) != 0; }
+      int isWhiteSpace(char c) { return strchr(whitespace, c) != 0; }
+      int isIdent(char c)      { return isalpha(c); }
+      int isNum(char c)        { return isdigit(c) || isNumPrefix(c); }
+      int isOperator(char c)   { return strchr(operators, c) != 0; }
+      int isLogical(char c)    { return strchr(logicalOps, c) != 0; }
+      int isNumPrefix(char c)  { return strchr(numprefix, c) != 0; }
+
+      // data
+
+      int isStr;
+      const char* p;
+      char* buffer;
+      char _last[1000+TB];
+      int allowNumPrefix;
+
+      static const char* delimiters;
+      static const char* operators;
+      static const char* logicalOps;
+      static const char* whitespace;
+      static const char* numprefix;
+};