1 files changed, 176 insertions, 0 deletions
diff --git a/include/lldb/Utility/StringExtractor.h b/include/lldb/Utility/StringExtractor.h
new file mode 100644
index 000000000000..0f2dbb166be1
--- /dev/null
+++ b/include/lldb/Utility/StringExtractor.h
@@ -0,0 +1,176 @@
+//===-- 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>
+#include <stdint.h>
+
+// 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 != UINT64_MAX;
+    }
+
+    uint64_t
+    GetFilePos () const
+    {
+        return m_index;
+    }
+
+    void
+    SetFilePos (uint32_t idx)
+    {
+        m_index = idx;
+    }
+
+    void
+    Clear ()
+    {
+        m_packet.clear();
+        m_index = 0;
+    }
+
+    void
+    SkipSpaces ();
+
+    std::string &
+    GetStringRef ()
+    {
+        return m_packet;
+    }
+
+    const std::string &
+    GetStringRef () const
+    {
+        return m_packet;
+    }
+
+    bool
+    Empty()
+    {
+        return m_packet.empty();
+    }
+
+    size_t
+    GetBytesLeft ()
+    {
+        if (m_index < m_packet.size())
+            return m_packet.size() - m_index;
+        return 0;
+    }
+
+    char
+    GetChar (char fail_value = '\0');
+
+    char
+    PeekChar (char fail_value = '\0')
+    {
+        const char *cstr = Peek();
+        if (cstr)
+            return cstr[0];
+        return fail_value;
+    }
+
+    int
+    DecodeHexU8();
+
+    uint8_t
+    GetHexU8 (uint8_t fail_value = 0, bool set_eof_on_fail = true);
+
+    bool
+    GetNameColonValue (std::string &name, std::string &value);
+
+    int32_t
+    GetS32 (int32_t fail_value, int base = 0);
+
+    uint32_t
+    GetU32 (uint32_t fail_value, int base = 0);
+
+    int64_t
+    GetS64 (int64_t fail_value, int base = 0);
+    
+    uint64_t
+    GetU64 (uint64_t fail_value, int base = 0);
+
+    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);
+
+    size_t
+    GetHexBytesAvail (void *dst, size_t dst_len);
+
+    uint64_t
+    GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value);
+
+    size_t
+    GetHexByteString (std::string &str);
+
+    size_t
+    GetHexByteStringFixedLength (std::string &str, uint32_t nibble_length);
+
+    size_t
+    GetHexByteStringTerminatedBy (std::string &str,
+                                  char terminator);
+    
+    const char *
+    Peek ()
+    {
+        if (m_index < m_packet.size())
+            return m_packet.c_str() + m_index;
+        return nullptr;
+    }
+
+protected:
+    //------------------------------------------------------------------
+    // For StringExtractor only
+    //------------------------------------------------------------------
+    std::string m_packet;   // The string in which to extract data.
+    uint64_t m_index;       // When extracting data from a packet, this index
+                            // will march along as things get extracted. If set
+                            // to UINT64_MAX the end of the packet data was
+                            // reached when decoding information
+};
+
+#endif  // utility_StringExtractor_h_