Initial checkin of lldb code from internal Apple repo.
git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@105619 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Utility/StringExtractor.h b/source/Utility/StringExtractor.h
new file mode 100644
index 0000000..e2312f7
--- /dev/null
+++ b/source/Utility/StringExtractor.h
@@ -0,0 +1,126 @@
+//===-- StringExtractor.h ---------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef utility_StringExtractor_h_
+#define utility_StringExtractor_h_
+
+// C Includes
+// C++ Includes
+#include <string>
+
+// Other libraries and framework includes
+// Project includes
+
+class StringExtractor
+{
+public:
+
+ enum {
+ BigEndian = 0,
+ LittleEndian = 1
+ };
+ //------------------------------------------------------------------
+ // Constructors and Destructors
+ //------------------------------------------------------------------
+ StringExtractor();
+ StringExtractor(const char *packet_cstr);
+ StringExtractor(const StringExtractor& rhs);
+ virtual ~StringExtractor();
+
+ //------------------------------------------------------------------
+ // Operators
+ //------------------------------------------------------------------
+ const StringExtractor&
+ operator=(const StringExtractor& rhs);
+
+ // Returns true if the file position is still valid for the data
+ // contained in this string extractor object.
+ bool
+ IsGood() const
+ {
+ return m_index != UINT32_MAX;
+ }
+
+ uint32_t
+ GetFilePos () const
+ {
+ return m_index;
+ }
+
+ void
+ SetFilePos (uint32_t idx)
+ {
+ m_index = idx;
+ }
+
+ void
+ Clear ()
+ {
+ m_packet.clear();
+ m_index = 0;
+ }
+
+ std::string &
+ GetStringRef ()
+ {
+ return m_packet;
+ }
+
+ bool
+ Empty()
+ {
+ return m_packet.empty();
+ }
+
+ uint32_t
+ GetBytesLeft ()
+ {
+ if (m_index < m_packet.size())
+ return m_packet.size() - m_index;
+ return 0;
+ }
+ char
+ GetChar (char fail_value = '\0');
+
+ int8_t
+ GetHexS8 (int8_t fail_value = 0);
+
+ uint8_t
+ GetHexU8 (uint8_t fail_value = 0);
+
+ bool
+ GetNameColonValue (std::string &name, std::string &value);
+
+ uint32_t
+ GetHexMaxU32 (bool little_endian, uint32_t fail_value);
+
+ uint64_t
+ GetHexMaxU64 (bool little_endian, uint64_t fail_value);
+
+ size_t
+ GetHexBytes (void *dst, size_t dst_len, uint8_t fail_fill_value);
+
+ uint64_t
+ GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value);
+
+protected:
+ //------------------------------------------------------------------
+ // For StringExtractor only
+ //------------------------------------------------------------------
+ std::string m_packet; // The string in which to extract data.
+ uint32_t m_index; // When extracting data from a packet, this index
+ // will march along as things get extracted. If set
+ // to UINT32_MAX the end of the packet data was
+ // reached when decoding information
+
+ uint32_t
+ GetNumHexASCIICharsAtFilePos (uint32_t max = UINT32_MAX) const;
+};
+
+#endif // utility_StringExtractor_h_