core/TEXT.hh

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Copyright (c) 2000-2015 Ericsson Telecom AB
   3 // All rights reserved. This program and the accompanying materials
   4 // are made available under the terms of the Eclipse Public License v1.0
   5 // which accompanies this distribution, and is available at
   6 // http://www.eclipse.org/legal/epl-v10.html
   7 ///////////////////////////////////////////////////////////////////////////////
   8 #ifndef _TEXT_HH
   9 #define _TEXT_HH
  10
  11 #include "Types.h"
  12 #include "Encdec.hh"
  13 #include <sys/types.h>
  14 #include <regex.h>
  15 /**
  16  * \defgroup TEXT TEXT-related stuff.
  17  *
  18  *  @{
  19  */
  20 class CHARSTRING;
  21 class Token_Match;
  22 struct TTCN_TEXTdescriptor_values {
  23   boolean leading_zero;
  24   boolean repeatable;
  25   int min_length;
  26   int max_length;
  27   int convert;
  28   int just;
  29 };
  30
  31 struct TTCN_TEXTdescriptor_bool {
  32   const CHARSTRING* true_encode_token;
  33   const Token_Match* true_decode_token;
  34   const CHARSTRING* false_encode_token;
  35   const Token_Match* false_decode_token;
  36 };
  37
  38 struct TTCN_TEXTdescriptor_enum {
  39   const CHARSTRING* encode_token;
  40   const Token_Match* decode_token;
  41 };
  42
  43
  44 struct TTCN_TEXTdescriptor_param_values {
  45   TTCN_TEXTdescriptor_values coding_params;
  46   TTCN_TEXTdescriptor_values decoding_params;
  47 };
  48
  49 union TTCN_TEXTdescriptor_union {
  50   const TTCN_TEXTdescriptor_param_values* parameters;
  51   const TTCN_TEXTdescriptor_bool* bool_values;
  52   const TTCN_TEXTdescriptor_enum* enum_values;
  53 };
  54
  55 struct TTCN_TEXTdescriptor_t {
  56   const CHARSTRING* begin_encode;
  57   const Token_Match* begin_decode;
  58   const CHARSTRING* end_encode;
  59   const Token_Match* end_decode;
  60   const CHARSTRING* separator_encode;
  61   const Token_Match* separator_decode;
  62   const Token_Match* select_token;
  63   TTCN_TEXTdescriptor_union val;
  64 };
  65
  66 class Token_Match {
  67   regex_t posix_regexp_begin; ///< regexp for the anchored match
  68   regex_t posix_regexp_first; ///< regexp for floating match
  69   const char *token_str; // not owned or freed by Token_Match
  70   size_t fixed_len; ///< length of fixed string, or zero
  71   boolean null_match; ///< true if the token_str was NULL or empty
  72 public:
  73   Token_Match(const char *posix_str, boolean case_sensitive = TRUE,
  74     boolean fixed = FALSE);
  75   ~Token_Match();
  76
  77   inline operator const char*() const { return token_str; }
  78   /** Match anchored at the beginning
  79    *
  80    * @param buf the buffer to search
  81    * @return length of the match or -1 if not matched
  82    *
  83    * It may call TTCN_error() in case of error, causing a DTE
  84    */
  85   int match_begin(TTCN_Buffer& buf) const;
  86   /** Floating match
  87    *
  88    * @param buf the buffer to search
  89    * @return the offset where the match begins, or -1 if not matched
  90    *
  91    * It may call TTCN_error() in case of error, causing a DTE
  92    */
  93   int match_first(TTCN_Buffer& buf) const;
  94 };
  95
  96 class Limit_Token_List {
  97 private:
  98   size_t num_of_tokens;
  99   size_t size_of_list;
 100   const Token_Match **list;
 101   int *last_match;
 102   int last_ret_val;
 103   const char* last_pos;
 104   /// Copy constructor disabled
 105   Limit_Token_List(const Limit_Token_List&);
 106   /// Assignment disabled
 107   Limit_Token_List& operator=(const Limit_Token_List&);
 108 public:
 109   Limit_Token_List();
 110   ~Limit_Token_List();
 111
 112   void add_token(const Token_Match *);
 113   void remove_tokens(size_t);
 114   int match(TTCN_Buffer&,size_t lim=0);
 115   inline boolean has_token(size_t ml=0) const { return num_of_tokens != ml; }
 116 };
 117
 118 extern const TTCN_TEXTdescriptor_t INTEGER_text_;
 119 extern const TTCN_TEXTdescriptor_t BOOLEAN_text_;
 120 extern const TTCN_TEXTdescriptor_t CHARSTRING_text_;
 121 extern const TTCN_TEXTdescriptor_t BITSTRING_text_;
 122 extern const TTCN_TEXTdescriptor_t HEXSTRING_text_;
 123 extern const TTCN_TEXTdescriptor_t OCTETSTRING_text_;
 124 extern const TTCN_TEXTdescriptor_t UNIVERSAL_CHARSTRING_text_;
 125
 126 /** @} end of TEXT group */
 127
 128 #endif // _TEXT_HH