1 files changed, 81 insertions, 0 deletions
diff --git a/externals/mysql/extlib/regex/reginit.c b/externals/mysql/extlib/regex/reginit.c
new file mode 100644
index 00000000000..5980de24030
--- /dev/null
+++ b/externals/mysql/extlib/regex/reginit.c
@@ -0,0 +1,81 @@
+/* Init cclasses array from ctypes */
+
+#include <my_global.h>
+#include <m_ctype.h>
+#include <m_string.h>
+#include "cclass.h"
+
+static my_bool regex_inited=0;
+
+void my_regex_init(CHARSET_INFO *cs)
+{
+  char buff[CCLASS_LAST][256];
+  int  count[CCLASS_LAST];
+  uint i;
+
+  if (!regex_inited)
+  {
+    regex_inited=1;
+    bzero((uchar*) &count,sizeof(count));
+
+    for (i=1 ; i<= 255; i++)
+    {
+      if (my_isalnum(cs,i))
+	buff[CCLASS_ALNUM][count[CCLASS_ALNUM]++]=(char) i;
+      if (my_isalpha(cs,i))
+	buff[CCLASS_ALPHA][count[CCLASS_ALPHA]++]=(char) i;
+      if (my_iscntrl(cs,i))
+	buff[CCLASS_CNTRL][count[CCLASS_CNTRL]++]=(char) i;
+      if (my_isdigit(cs,i))
+	buff[CCLASS_DIGIT][count[CCLASS_DIGIT]++]=(char) i;
+      if (my_isgraph(cs,i))
+	buff[CCLASS_GRAPH][count[CCLASS_GRAPH]++]=(char) i;
+      if (my_islower(cs,i))
+	buff[CCLASS_LOWER][count[CCLASS_LOWER]++]=(char) i;
+      if (my_isprint(cs,i))
+	buff[CCLASS_PRINT][count[CCLASS_PRINT]++]=(char) i;
+      if (my_ispunct(cs,i))
+	buff[CCLASS_PUNCT][count[CCLASS_PUNCT]++]=(char) i;
+      if (my_isspace(cs,i))
+	buff[CCLASS_SPACE][count[CCLASS_SPACE]++]=(char) i;
+      if (my_isupper(cs,i))
+	buff[CCLASS_UPPER][count[CCLASS_UPPER]++]=(char) i;
+      if (my_isxdigit(cs,i))
+	buff[CCLASS_XDIGIT][count[CCLASS_XDIGIT]++]=(char) i;
+    }
+    buff[CCLASS_BLANK][0]=' ';
+    buff[CCLASS_BLANK][1]='\t';
+    count[CCLASS_BLANK]=2;
+    for (i=0; i < CCLASS_LAST ; i++)
+    {
+      char *tmp=(char*) malloc(count[i]+1);
+      if (!tmp)
+      {
+	/*
+	  This is very unlikely to happen as this function is called once
+	  at program startup
+	*/
+	fprintf(stderr,
+		"Fatal error: Can't allocate memory in regex_init\n");
+	exit(1);
+      }
+      memcpy(tmp,buff[i],count[i]*sizeof(char));
+      tmp[count[i]]=0;
+      cclasses[i].chars=tmp;
+    }
+  }
+  return;
+}
+
+void my_regex_end()
+{
+  if (regex_inited)
+  {
+    int i;
+    for (i=0; i < CCLASS_LAST ; i++)
+      free((char*) cclasses[i].chars);
+    regex_inited=0;
+  }
+}
+
+