/*
- * Copyright (C) 1994, Index Data I/S
+ * Copyright (C) 1994-1996, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: dfa.c,v $
- * Revision 1.11 1996-01-08 19:15:24 adam
+ * Revision 1.12 1996-06-04 10:20:02 adam
+ * Added support for character mapping.
+ *
+ * Revision 1.11 1996/01/08 19:15:24 adam
* Allow single $ in expressions.
*
* Revision 1.10 1996/01/08 09:09:17 adam
return L_CHARS;
}
+static int map_l_char (void)
+{
+ char **mapto;
+ const char *cp0 = expr_ptr-1;
+ int i = 0, len = strlen(cp0);
+
+ if (cp0[0] == 1 && cp0[1])
+ {
+ expr_ptr++;
+ look_ch = cp0[1];
+ return L_CHAR;
+ }
+ if (!parse_info->cmap)
+ return L_CHAR;
+
+ mapto = (*parse_info->cmap) (&cp0, len);
+ assert (mapto);
+
+ expr_ptr = cp0;
+ look_ch = mapto[i][0];
+ logf (LOG_DEBUG, "map from %c to %d", expr_ptr[-1], look_ch);
+ return L_CHAR;
+}
+
static int lex_sub(void)
{
int esc;
if (look_ch == '\"')
{
if (esc)
- return L_CHAR;
+ return map_l_char ();
inside_string = !inside_string;
}
else if (esc || inside_string)
- return L_CHAR;
+ return map_l_char ();
else if (look_ch == '[')
return read_charset();
else
--expr_ptr;
return cc[1];
}
- return L_CHAR;
+ return map_l_char ();
}
return 0;
}
parse_info->use_Tnode = parse_info->max_Tnode = 0;
parse_info->charMap = NULL;
parse_info->charMapSize = 0;
+ parse_info->cmap = NULL;
return parse_info;
}
return dfa;
}
+void dfa_set_cmap (struct DFA *dfa, char **(*cmap)(const char **from, int len))
+{
+ dfa->parse_info->cmap = cmap;
+}
+
int dfa_parse (struct DFA *dfa, const char **pattern)
{
struct Tnode *top;