Add AMTL files

public/amtl/am-string.h

@@ -0,0 +1,134 @@
+// vim: set sts=8 ts=2 sw=2 tw=99 et:
+//
+// Copyright (C) 2013, David Anderson and AlliedModders LLC
+// 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 AlliedModders LLC 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 HOLDER 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.
+
+#ifndef _include_amtl_string_h_
+#define _include_amtl_string_h_
+
+#include <stdlib.h>
+#include <string.h>
+#include <am-utility.h>
+#include <am-moveable.h>
+
+namespace ke {
+
+// ASCII string.
+class AString
+{
+ public:
+  AString()
+   : length_(0)
+  {
+  }
+
+  explicit AString(const char *str) {
+    set(str, strlen(str));
+  }
+  AString(const char *str, size_t length) {
+    set(str, length);
+  }
+  AString(const AString &other) {
+    if (other.length_)
+      set(other.chars_, other.length_);
+    else
+     length_ = 0;
+  }
+  AString(Moveable<AString> other)
+    : chars_(other->chars_.take()),
+      length_(other->length_)
+  {
+    other->length_ = 0;
+  }
+
+  AString &operator =(const char *str) {
+    if (str && str[0]) {
+      set(str, strlen(str));
+    } else {
+      chars_ = NULL;
+      length_ = 0;
+    }
+    return *this;
+  }
+  AString &operator =(const AString &other) {
+    if (other.length_) {
+      set(other.chars_, other.length_);
+    } else {
+      chars_ = NULL;
+      length_ = 0;
+    }
+    return *this;
+  }
+  AString &operator =(Moveable<AString> other) {
+    chars_ = other->chars_.take();
+    length_ = other->length_;
+    other->length_ = 0;
+    return *this;
+  }
+
+  int compare(const char *str) const {
+    return strcmp(chars(), str);
+  }
+  int compare(const AString &other) const {
+    return strcmp(chars(), other.chars());
+  }
+  bool operator ==(const AString &other) const {
+    return other.length() == length() &&
+           memcmp(other.chars(), chars(), length()) == 0;
+  }
+
+  char operator [](size_t index) const {
+    assert(index < length());
+    return chars()[index];
+  }
+
+  size_t length() const {
+    return length_;
+  }
+
+  const char *chars() const {
+    if (!chars_)
+      return "";
+    return chars_;
+  }
+
+ private:
+  void set(const char *str, size_t length) {
+    chars_ = new char[length + 1];
+    length_ = length;
+    memcpy(chars_, str, length);
+    chars_[length] = '\0';
+  }
+
+ private:
+  AutoArray<char> chars_;
+  size_t length_;
+};
+
+}
+
+#endif // _include_amtl_string_h_