move string_piece to utils/ from inside klm

1 files changed, 1 insertions, 192 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