1 files changed, 125 insertions, 0 deletions
diff --git a/tools/debugserver/source/StdStringExtractor.h b/tools/debugserver/source/StdStringExtractor.h
new file mode 100644
index 000000000000..c46978b61f4f
--- /dev/null
+++ b/tools/debugserver/source/StdStringExtractor.h
@@ -0,0 +1,125 @@
+//===-- StdStringExtractor.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_StdStringExtractor_h_
+#define utility_StdStringExtractor_h_
+
+// C Includes
+// C++ Includes
+#include <stdint.h>
+#include <string>
+
+// Other libraries and framework includes
+// Project includes
+
+// Based on StringExtractor, with the added limitation that this file should not
+// take a dependency on LLVM, as it is used from debugserver.
+class StdStringExtractor {
+public:
+  enum { BigEndian = 0, LittleEndian = 1 };
+  //------------------------------------------------------------------
+  // Constructors and Destructors
+  //------------------------------------------------------------------
+  StdStringExtractor();
+  StdStringExtractor(const char *packet_cstr);
+  StdStringExtractor(const StdStringExtractor &rhs);
+  virtual ~StdStringExtractor();
+
+  //------------------------------------------------------------------
+  // Operators
+  //------------------------------------------------------------------
+  const StdStringExtractor &operator=(const StdStringExtractor &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 GetHexU8Ex(uint8_t &ch, 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 StdStringExtractor 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_