move string_piece to utils/ from inside klm

2 files changed, 2 insertions, 461 deletions

diff --git a/klm/util/string_piece.cc b/klm/util/string_piece.cc
index ec394b96..973091c4 100644
--- a/klm/util/string_piece.cc
+++ b/klm/util/string_piece.cc
@@ -1,193 +1,2 @@
-// Copyright 2004 The RE2 Authors.  All Rights Reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in string_piece.hh.
+// this has been moved to utils/ in cdec
 
-#include "util/string_piece.hh"
-
-#include <algorithm>
-
-#include <limits.h>
-
-#ifndef HAVE_ICU
-
-typedef StringPiece::size_type size_type;
-
-void StringPiece::CopyToString(std::string* target) const {
-  target->assign(ptr_, length_);
-}
-
-size_type StringPiece::find(const StringPiece& s, size_type pos) const {
-  // Not sure why length_ < 0 was here since it's std::size_t.
-  if (/*length_ < 0 || */pos > static_cast<size_type>(length_))
-    return npos;
-
-  const char* result = std::search(ptr_ + pos, ptr_ + length_,
-                                   s.ptr_, s.ptr_ + s.length_);
-  const size_type xpos = result - ptr_;
-  return xpos + s.length_ <= length_ ? xpos : npos;
-}
-
-size_type StringPiece::find(char c, size_type pos) const {
-  if (length_ <= 0 || pos >= static_cast<size_type>(length_)) {
-    return npos;
-  }
-  const char* result = std::find(ptr_ + pos, ptr_ + length_, c);
-  return result != ptr_ + length_ ? result - ptr_ : npos;
-}
-
-size_type StringPiece::rfind(const StringPiece& s, size_type pos) const {
-  if (length_ < s.length_) return npos;
-  const size_t ulen = length_;
-  if (s.length_ == 0) return std::min(ulen, pos);
-
-  const char* last = ptr_ + std::min(ulen - s.length_, pos) + s.length_;
-  const char* result = std::find_end(ptr_, last, s.ptr_, s.ptr_ + s.length_);
-  return result != last ? result - ptr_ : npos;
-}
-
-size_type StringPiece::rfind(char c, size_type pos) const {
-  if (length_ <= 0) return npos;
-  for (int i = std::min(pos, static_cast<size_type>(length_ - 1));
-       i >= 0; --i) {
-    if (ptr_[i] == c) {
-      return i;
-    }
-  }
-  return npos;
-}
-
-// For each character in characters_wanted, sets the index corresponding
-// to the ASCII code of that character to 1 in table.  This is used by
-// the find_.*_of methods below to tell whether or not a character is in
-// the lookup table in constant time.
-// The argument `table' must be an array that is large enough to hold all
-// the possible values of an unsigned char.  Thus it should be be declared
-// as follows:
-//   bool table[UCHAR_MAX + 1]
-static inline void BuildLookupTable(const StringPiece& characters_wanted,
-                                    bool* table) {
-  const size_type length = characters_wanted.length();
-  const char* const data = characters_wanted.data();
-  for (size_type i = 0; i < length; ++i) {
-    table[static_cast<unsigned char>(data[i])] = true;
-  }
-}
-
-size_type StringPiece::find_first_of(const StringPiece& s,
-                                     size_type pos) const {
-  if (length_ == 0 || s.length_ == 0)
-    return npos;
-
-  // Avoid the cost of BuildLookupTable() for a single-character search.
-  if (s.length_ == 1)
-    return find_first_of(s.ptr_[0], pos);
-
-  bool lookup[UCHAR_MAX + 1] = { false };
-  BuildLookupTable(s, lookup);
-  for (size_type i = pos; i < length_; ++i) {
-    if (lookup[static_cast<unsigned char>(ptr_[i])]) {
-      return i;
-    }
-  }
-  return npos;
-}
-
-size_type StringPiece::find_first_not_of(const StringPiece& s,
-                                         size_type pos) const {
-  if (length_ == 0)
-    return npos;
-
-  if (s.length_ == 0)
-    return 0;
-
-  // Avoid the cost of BuildLookupTable() for a single-character search.
-  if (s.length_ == 1)
-    return find_first_not_of(s.ptr_[0], pos);
-
-  bool lookup[UCHAR_MAX + 1] = { false };
-  BuildLookupTable(s, lookup);
-  for (size_type i = pos; i < length_; ++i) {
-    if (!lookup[static_cast<unsigned char>(ptr_[i])]) {
-      return i;
-    }
-  }
-  return npos;
-}
-
-size_type StringPiece::find_first_not_of(char c, size_type pos) const {
-  if (length_ == 0)
-    return npos;
-
-  for (; pos < length_; ++pos) {
-    if (ptr_[pos] != c) {
-      return pos;
-    }
-  }
-  return npos;
-}
-
-size_type StringPiece::find_last_of(const StringPiece& s, size_type pos) const {
-  if (length_ == 0 || s.length_ == 0)
-    return npos;
-
-  // Avoid the cost of BuildLookupTable() for a single-character search.
-  if (s.length_ == 1)
-    return find_last_of(s.ptr_[0], pos);
-
-  bool lookup[UCHAR_MAX + 1] = { false };
-  BuildLookupTable(s, lookup);
-  for (size_type i = std::min(pos, length_ - 1); ; --i) {
-    if (lookup[static_cast<unsigned char>(ptr_[i])])
-      return i;
-    if (i == 0)
-      break;
-  }
-  return npos;
-}
-
-size_type StringPiece::find_last_not_of(const StringPiece& s,
-                                        size_type pos) const {
-  if (length_ == 0)
-    return npos;
-
-  size_type i = std::min(pos, length_ - 1);
-  if (s.length_ == 0)
-    return i;
-
-  // Avoid the cost of BuildLookupTable() for a single-character search.
-  if (s.length_ == 1)
-    return find_last_not_of(s.ptr_[0], pos);
-
-  bool lookup[UCHAR_MAX + 1] = { false };
-  BuildLookupTable(s, lookup);
-  for (; ; --i) {
-    if (!lookup[static_cast<unsigned char>(ptr_[i])])
-      return i;
-    if (i == 0)
-      break;
-  }
-  return npos;
-}
-
-size_type StringPiece::find_last_not_of(char c, size_type pos) const {
-  if (length_ == 0)
-    return npos;
-
-  for (size_type i = std::min(pos, length_ - 1); ; --i) {
-    if (ptr_[i] != c)
-      return i;
-    if (i == 0)
-      break;
-  }
-  return npos;
-}
-
-StringPiece StringPiece::substr(size_type pos, size_type n) const {
-  if (pos > length_) pos = length_;
-  if (n > length_ - pos) n = length_ - pos;
-  return StringPiece(ptr_ + pos, n);
-}
-
-const size_type StringPiece::npos = size_type(-1);
-
-#endif // !HAVE_ICU
diff --git a/klm/util/string_piece.hh b/klm/util/string_piece.hh
index 84431db1..696ca084 100644
--- a/klm/util/string_piece.hh
+++ b/klm/util/string_piece.hh
@@ -1,270 +1,2 @@
-/* If you use ICU in your program, then compile with -DHAVE_ICU -licui18n.  If
- * you don't use ICU, then this will use the Google implementation from Chrome.
- * This has been modified from the original version to let you choose.
- */
+#include "utils/string_piece.hh"
 
-// Copyright 2008, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//    * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//    * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//    * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-// Copied from strings/stringpiece.h with modifications
-//
-// A string-like object that points to a sized piece of memory.
-//
-// Functions or methods may use const StringPiece& parameters to accept either
-// a "const char*" or a "string" value that will be implicitly converted to
-// a StringPiece.  The implicit conversion means that it is often appropriate
-// to include this .h file in other files rather than forward-declaring
-// StringPiece as would be appropriate for most other Google classes.
-//
-// Systematic usage of StringPiece is encouraged as it will reduce unnecessary
-// conversions from "const char*" to "string" and back again.
-//
-
-#ifndef BASE_STRING_PIECE_H__
-#define BASE_STRING_PIECE_H__
-
-#include "util/have.hh"
-
-#include <cstring>
-#include <iosfwd>
-#include <ostream>
-
-#ifdef HAVE_ICU
-#include <unicode/stringpiece.h>
-#include <unicode/uversion.h>
-
-// Old versions of ICU don't define operator== and operator!=.
-#if (U_ICU_VERSION_MAJOR_NUM < 4) || ((U_ICU_VERSION_MAJOR_NUM == 4) && (U_ICU_VERSION_MINOR_NUM < 4))
-#warning You are using an old version of ICU.  Consider upgrading to ICU >= 4.6.
-inline bool operator==(const StringPiece& x, const StringPiece& y) {
-  if (x.size() != y.size())
-    return false;
-
-  return std::memcmp(x.data(), y.data(), x.size()) == 0;
-}
-
-inline bool operator!=(const StringPiece& x, const StringPiece& y) {
-  return !(x == y);
-}
-#endif // old version of ICU
-
-U_NAMESPACE_BEGIN
-
-inline bool starts_with(const StringPiece& longer, const StringPiece& prefix) {
-  int longersize = longer.size(), prefixsize = prefix.size();
-  return longersize >= prefixsize && std::memcmp(longer.data(), prefix.data(), prefixsize) == 0;
-}
-
-#else
-
-#include <algorithm>
-#include <cstddef>
-#include <string>
-#include <string.h>
-
-#ifdef WIN32
-#undef max
-#undef min
-#endif
-
-class StringPiece {
- public:
-  typedef size_t size_type;
-
- private:
-  const char*   ptr_;
-  size_type     length_;
-
- public:
-  // We provide non-explicit singleton constructors so users can pass
-  // in a "const char*" or a "string" wherever a "StringPiece" is
-  // expected.
-  StringPiece() : ptr_(NULL), length_(0) { }
-  StringPiece(const char* str)
-    : ptr_(str), length_((str == NULL) ? 0 : strlen(str)) { }
-  StringPiece(const std::string& str)
-    : ptr_(str.data()), length_(str.size()) { }
-  StringPiece(const char* offset, size_type len)
-    : ptr_(offset), length_(len) { }
-
-  // data() may return a pointer to a buffer with embedded NULs, and the
-  // returned buffer may or may not be null terminated.  Therefore it is
-  // typically a mistake to pass data() to a routine that expects a NUL
-  // terminated string.
-  const char* data() const { return ptr_; }
-  size_type size() const { return length_; }
-  size_type length() const { return length_; }
-  bool empty() const { return length_ == 0; }
-
-  void clear() { ptr_ = NULL; length_ = 0; }
-  void set(const char* data, size_type len) { ptr_ = data; length_ = len; }
-  void set(const char* str) {
-    ptr_ = str;
-    length_ = str ? strlen(str) : 0;
-  }
-  void set(const void* data, size_type len) {
-    ptr_ = reinterpret_cast<const char*>(data);
-    length_ = len;
-  }
-
-  char operator[](size_type i) const { return ptr_[i]; }
-
-  void remove_prefix(size_type n) {
-    ptr_ += n;
-    length_ -= n;
-  }
-
-  void remove_suffix(size_type n) {
-    length_ -= n;
-  }
-
-  int compare(const StringPiece& x) const {
-    int r = wordmemcmp(ptr_, x.ptr_, std::min(length_, x.length_));
-    if (r == 0) {
-      if (length_ < x.length_) r = -1;
-      else if (length_ > x.length_) r = +1;
-    }
-    return r;
-  }
-
-  std::string as_string() const {
-    // std::string doesn't like to take a NULL pointer even with a 0 size.
-    return std::string(!empty() ? data() : "", size());
-  }
-
-  void CopyToString(std::string* target) const;
-  void AppendToString(std::string* target) const;
-
-  // Does "this" start with "x"
-  bool starts_with(const StringPiece& x) const {
-    return ((length_ >= x.length_) &&
-            (wordmemcmp(ptr_, x.ptr_, x.length_) == 0));
-  }
-
-  // Does "this" end with "x"
-  bool ends_with(const StringPiece& x) const {
-    return ((length_ >= x.length_) &&
-            (wordmemcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0));
-  }
-
-  // standard STL container boilerplate
-  typedef char value_type;
-  typedef const char* pointer;
-  typedef const char& reference;
-  typedef const char& const_reference;
-  typedef ptrdiff_t difference_type;
-  static const size_type npos;
-  typedef const char* const_iterator;
-  typedef const char* iterator;
-  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
-  typedef std::reverse_iterator<iterator> reverse_iterator;
-  iterator begin() const { return ptr_; }
-  iterator end() const { return ptr_ + length_; }
-  const_reverse_iterator rbegin() const {
-    return const_reverse_iterator(ptr_ + length_);
-  }
-  const_reverse_iterator rend() const {
-    return const_reverse_iterator(ptr_);
-  }
-
-  size_type max_size() const { return length_; }
-  size_type capacity() const { return length_; }
-
-  size_type copy(char* buf, size_type n, size_type pos = 0) const;
-
-  size_type find(const StringPiece& s, size_type pos = 0) const;
-  size_type find(char c, size_type pos = 0) const;
-  size_type rfind(const StringPiece& s, size_type pos = npos) const;
-  size_type rfind(char c, size_type pos = npos) const;
-
-  size_type find_first_of(const StringPiece& s, size_type pos = 0) const;
-  size_type find_first_of(char c, size_type pos = 0) const {
-    return find(c, pos);
-  }
-  size_type find_first_not_of(const StringPiece& s, size_type pos = 0) const;
-  size_type find_first_not_of(char c, size_type pos = 0) const;
-  size_type find_last_of(const StringPiece& s, size_type pos = npos) const;
-  size_type find_last_of(char c, size_type pos = npos) const {
-    return rfind(c, pos);
-  }
-  size_type find_last_not_of(const StringPiece& s, size_type pos = npos) const;
-  size_type find_last_not_of(char c, size_type pos = npos) const;
-
-  StringPiece substr(size_type pos, size_type n = npos) const;
-
-  static int wordmemcmp(const char* p, const char* p2, size_type N) {
-    return std::memcmp(p, p2, N);
-  }
-};
-
-inline bool operator==(const StringPiece& x, const StringPiece& y) {
-  if (x.size() != y.size())
-    return false;
-
-  return std::memcmp(x.data(), y.data(), x.size()) == 0;
-}
-
-inline bool operator!=(const StringPiece& x, const StringPiece& y) {
-  return !(x == y);
-}
-
-inline bool starts_with(const StringPiece& longer, const StringPiece& prefix) {
-  return longer.starts_with(prefix);
-}
-
-#endif // HAVE_ICU undefined
-
-inline bool operator<(const StringPiece& x, const StringPiece& y) {
-  const int r = std::memcmp(x.data(), y.data(),
-                                       std::min(x.size(), y.size()));
-  return ((r < 0) || ((r == 0) && (x.size() < y.size())));
-}
-
-inline bool operator>(const StringPiece& x, const StringPiece& y) {
-  return y < x;
-}
-
-inline bool operator<=(const StringPiece& x, const StringPiece& y) {
-  return !(x > y);
-}
-
-inline bool operator>=(const StringPiece& x, const StringPiece& y) {
-  return !(x < y);
-}
-
-// allow StringPiece to be logged (needed for unit testing).
-inline std::ostream& operator<<(std::ostream& o, const StringPiece& piece) {
-  return o.write(piece.data(), static_cast<std::streamsize>(piece.size()));
-}
-
-#ifdef HAVE_ICU
-U_NAMESPACE_END
-using U_NAMESPACE_QUALIFIER StringPiece;
-#endif
-
-#endif  // BASE_STRING_PIECE_H__