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diff --git a/xdiff/xtypes.h b/xdiff/xtypes.h
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+/*
+ * LibXDiff by Davide Libenzi ( File Differential Library )
+ * Copyright (C) 2003 Davide Libenzi
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#if !defined(XTYPES_H)
+#define XTYPES_H
+
+
+
+typedef struct s_chanode {
+ struct s_chanode *next;
+ long icurr;
+} chanode_t;
+
+typedef struct s_chastore {
+ chanode_t *head, *tail;
+ long isize, nsize;
+ chanode_t *ancur;
+ chanode_t *sncur;
+ long scurr;
+} chastore_t;
+
+typedef struct s_xrecord {
+ struct s_xrecord *next;
+ char const *ptr;
+ long size;
+ unsigned long ha;
+} xrecord_t;
+
+typedef struct s_xdfile {
+ chastore_t rcha;
+ long nrec;
+ unsigned int hbits;
+ xrecord_t **rhash;
+ long dstart, dend;
+ xrecord_t **recs;
+ char *rchg;
+ long *rindex;
+ long nreff;
+ unsigned long *ha;
+} xdfile_t;
+
+typedef struct s_xdfenv {
+ xdfile_t xdf1, xdf2;
+} xdfenv_t;
+
+
+
+#endif /* #if !defined(XTYPES_H) */