Fix dfa_match_first to avoid match past nul byte

[idzebra-moved-to-github.git] / recctrl / recgrs.c

diff --git a/recctrl/recgrs.c b/recctrl/recgrs.c
index df538ce..da1ad60 100644 (file)
--- a/recctrl/recgrs.c
+++ b/recctrl/recgrs.c
@@ -1,4 +1,4 @@
-/* $Id: recgrs.c,v 1.107 2006-02-06 23:22:29 adam Exp $
+/* $Id: recgrs.c,v 1.108 2006-02-07 00:17:44 adam Exp $
    Copyright (C) 1995-2005
    Index Data ApS
 
@@ -350,6 +350,7 @@ static int dfa_match_first(struct DFA_state **dfaar, const char *text)
     unsigned char c;
     
     for (c = *p++, t = s->trans, i = s->tran_no; --i >= 0; t++)
+    {
        if (c >= t->ch[0] && c <= t->ch[1])
        {
            while (i >= 0)
@@ -359,12 +360,15 @@ static int dfa_match_first(struct DFA_state **dfaar, const char *text)
                if (s->rule_no)
                    return 1;
                /* next char */
+               if (!c)
+                   return 0;
                c = *p++;
                for (t = s->trans, i = s->tran_no; --i >= 0; t++)
                    if (c >= t->ch[0] && c <= t->ch[1])
                        break;
            }
        }
+    }
     return 0;
 }