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diff --git a/regexp.h b/regexp.h
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--- /dev/null
+++ b/regexp.h
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+/*
+ * Busybox regexp header file
+ *
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+#ifndef _REGEXP_H_
+#define _REGEXP_H_
+
+
+
+
+#define NSUBEXP 10
+typedef struct regexp {
+ char *startp[NSUBEXP];
+ char *endp[NSUBEXP];
+ int minlen; /* length of shortest possible match */
+ char first; /* first character, if known; else \0 */
+ char bol; /* boolean: must start at beginning of line? */
+ char program[1]; /* Unwarranted chumminess with compiler. */
+} regexp;
+
+
+
+extern regexp *regcomp(char* text);
+extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase);
+extern void regsub(struct regexp* re, char* src, char* dst);
+
+extern int find_match(char *haystack, char *needle, int ignoreCase);
+
+#endif
+
+