--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: pcre.c,v 1.1 2003/11/29 23:38:37 mdw Exp $
+ *
+ * Matches Perl-compatible regular expressions
+ *
+ * (c) 2002 Mark Wooding
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Anag: a simple wordgame helper.
+ *
+ * Anag is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Anag is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Anag; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: pcre.c,v $
+ * Revision 1.1 2003/11/29 23:38:37 mdw
+ * Debianization.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifndef HAVE_PCRE
+ extern int dummy;
+#else
+
+#include "anag.h"
+#include <pcre.h>
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct node_pcre {
+ node n;
+ const char *s;
+ pcre *rx;
+ pcre_extra *rx_study;
+ int *ovec;
+ int ovecsz;
+} node_pcre;
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- Node matcher --- */
+
+static int n_pcre(node *nn, const char *p, size_t sz)
+{
+ node_pcre *n = (node_pcre *)nn;
+ int e;
+
+ e = pcre_exec(n->rx, n->rx_study, p, sz, 0, 0, n->ovec, n->ovecsz);
+ if (e >= 0)
+ return (1);
+ if (e == PCRE_ERROR_NOMATCH)
+ return (0);
+ die("unexpected PCRE error code %d", e);
+ return (-1);
+}
+
+/* --- Node creation --- */
+
+node *pcrenode(const char *const *av)
+{
+ node_pcre *n = xmalloc(sizeof(*n));
+ const char *e;
+ int eo;
+ int c;
+
+ n->n.func = n_pcre;
+ if ((n->rx = pcre_compile(av[0], PCRE_CASELESS, &e, &eo, 0)) == 0)
+ die("bad regular expression `%s': %s", av[0], e);
+ n->rx_study = pcre_study(n->rx, 0, &e);
+ if (e)
+ die("error studying pattern `%s': %s", av[0], e);
+ pcre_fullinfo(n->rx, n->rx_study, PCRE_INFO_BACKREFMAX, &c);
+ n->ovecsz = c * 2;
+ n->ovec = xmalloc(n->ovecsz * sizeof(*n->ovec));
+ return (&n->n);
+}
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#endif