Migrating to new directory structure adopted from the RealVNC's source tree. More changes will follow.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@589 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rdr/HexInStream.cxx b/common/rdr/HexInStream.cxx
new file mode 100644
index 0000000..80f8a79
--- /dev/null
+++ b/common/rdr/HexInStream.cxx
@@ -0,0 +1,117 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
+ *
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#include <rdr/HexInStream.h>
+#include <rdr/Exception.h>
+
+#include <stdlib.h>
+#include <ctype.h>
+
+using namespace rdr;
+
+const int DEFAULT_BUF_LEN = 16384;
+
+static inline int min(int a, int b) {return a<b ? a : b;}
+
+HexInStream::HexInStream(InStream& is, int bufSize_)
+: bufSize(bufSize_ ? bufSize_ : DEFAULT_BUF_LEN), offset(0), in_stream(is)
+{
+ ptr = end = start = new U8[bufSize];
+}
+
+HexInStream::~HexInStream() {
+ delete [] start;
+}
+
+
+bool HexInStream::readHexAndShift(char c, int* v) {
+ c=tolower(c);
+ if ((c >= '0') && (c <= '9'))
+ *v = (*v << 4) + (c - '0');
+ else if ((c >= 'a') && (c <= 'f'))
+ *v = (*v << 4) + (c - 'a' + 10);
+ else
+ return false;
+ return true;
+}
+
+bool HexInStream::hexStrToBin(const char* s, char** data, int* length) {
+ int l=strlen(s);
+ if ((l % 2) == 0) {
+ delete [] *data;
+ *data = 0; *length = 0;
+ if (l == 0)
+ return true;
+ *data = new char[l/2];
+ *length = l/2;
+ for(int i=0;i<l;i+=2) {
+ int byte = 0;
+ if (!readHexAndShift(s[i], &byte) ||
+ !readHexAndShift(s[i+1], &byte))
+ goto decodeError;
+ (*data)[i/2] = byte;
+ }
+ return true;
+ }
+decodeError:
+ delete [] *data;
+ *data = 0;
+ *length = 0;
+ return false;
+}
+
+
+int HexInStream::pos() {
+ return offset + ptr - start;
+}
+
+int HexInStream::overrun(int itemSize, int nItems, bool wait) {
+ if (itemSize > bufSize)
+ throw Exception("HexInStream overrun: max itemSize exceeded");
+
+ if (end - ptr != 0)
+ memmove(start, ptr, end - ptr);
+
+ end -= ptr - start;
+ offset += ptr - start;
+ ptr = start;
+
+ while (end < ptr + itemSize) {
+ int n = in_stream.check(2, 1, wait);
+ if (n == 0) return 0;
+ const U8* iptr = in_stream.getptr();
+ const U8* eptr = in_stream.getend();
+ int length = min((eptr - iptr)/2, start + bufSize - end);
+
+ U8* optr = (U8*) end;
+ for (int i=0; i<length; i++) {
+ int v = 0;
+ readHexAndShift(iptr[i*2], &v);
+ readHexAndShift(iptr[i*2+1], &v);
+ optr[i] = v;
+ }
+
+ in_stream.setptr(iptr + length*2);
+ end += length;
+ }
+
+ if (itemSize * nItems > end - ptr)
+ nItems = (end - ptr) / itemSize;
+
+ return nItems;
+}