11/25

ZBD_IIIDL_S_Project/build20241115/DependFile/googlepinyin/utf16char.cpp

@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include "utf16char.h"
+
+namespace ime_pinyin {
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  char16* utf16_strtok(char16 *utf16_str, size_t *token_size,
+                       char16 **utf16_str_next) {
+    if (NULL == utf16_str || NULL == token_size || NULL == utf16_str_next) {
+      return NULL;
+    }
+
+    // Skip the splitters
+    size_t pos = 0;
+    while ((char16)' ' == utf16_str[pos] || (char16)'\n' == utf16_str[pos]
+           || (char16)'\t' == utf16_str[pos])
+      pos++;
+
+    utf16_str += pos;
+    pos = 0;
+
+    while ((char16)'\0' != utf16_str[pos] && (char16)' ' != utf16_str[pos]
+           && (char16)'\n' != utf16_str[pos]
+           && (char16)'\t' != utf16_str[pos]) {
+      pos++;
+    }
+
+    char16 *ret_val = utf16_str;
+    if ((char16)'\0' == utf16_str[pos]) {
+      *utf16_str_next = NULL;
+      if (0 == pos)
+        return NULL;
+    } else {
+      *utf16_str_next = utf16_str + pos + 1;
+    }
+
+    utf16_str[pos] = (char16)'\0';
+    *token_size = pos;
+
+    return ret_val;
+  }
+
+  int utf16_atoi(const char16 *utf16_str) {
+    if (NULL == utf16_str)
+      return 0;
+
+    int value = 0;
+    int sign = 1;
+    size_t pos = 0;
+
+    if ((char16)'-' == utf16_str[pos]) {
+      sign = -1;
+      pos++;
+    }
+
+    while ((char16)'0' <=  utf16_str[pos] &&
+           (char16)'9' >= utf16_str[pos]) {
+      value = value * 10 + static_cast<int>(utf16_str[pos] - (char16)'0');
+      pos++;
+    }
+
+    return value*sign;
+  }
+
+  float utf16_atof(const char16 *utf16_str) {
+    // A temporary implemetation.
+    char char8[256];
+    if (utf16_strlen(utf16_str) >= 256) return 0;
+
+    utf16_strcpy_tochar(char8, utf16_str);
+    return atof(char8);
+  }
+
+  size_t utf16_strlen(const char16 *utf16_str) {
+    if (NULL == utf16_str)
+      return 0;
+
+    size_t size = 0;
+    while ((char16)'\0' != utf16_str[size])
+      size++;
+    return size;
+  }
+
+  int utf16_strcmp(const char16* str1, const char16* str2) {
+    size_t pos = 0;
+    while (str1[pos] == str2[pos] && (char16)'\0' != str1[pos])
+      pos++;
+
+    return static_cast<int>(str1[pos]) - static_cast<int>(str2[pos]);
+  }
+
+  int utf16_strncmp(const char16 *str1, const char16 *str2, size_t size) {
+    size_t pos = 0;
+    while (pos < size && str1[pos] == str2[pos] && (char16)'\0' != str1[pos])
+      pos++;
+
+    if (pos == size)
+      return 0;
+
+    return static_cast<int>(str1[pos]) - static_cast<int>(str2[pos]);
+  }
+
+  // we do not consider overlapping
+  char16* utf16_strcpy(char16 *dst, const char16 *src) {
+    if (NULL == src || NULL == dst)
+      return NULL;
+
+    char16* cp = dst;
+
+    while ((char16)'\0' != *src) {
+      *cp = *src;
+      cp++;
+      src++;
+    }
+
+    *cp = *src;
+
+    return dst;
+  }
+
+  char16* utf16_strncpy(char16 *dst, const char16 *src, size_t size) {
+    if (NULL == src || NULL == dst || 0 == size)
+      return NULL;
+
+    if (src == dst)
+      return dst;
+
+    char16* cp = dst;
+
+    if (dst < src || (dst > src && dst >= src + size)) {
+      while (size-- && (*cp++ = *src++))
+        ;
+    } else {
+      cp += size - 1;
+      src += size - 1;
+      while (size-- && (*cp-- == *src--))
+        ;
+    }
+    return dst;
+  }
+
+  // We do not handle complicated cases like overlapping, because in this
+  // codebase, it is not necessary.
+  char* utf16_strcpy_tochar(char *dst, const char16 *src) {
+    if (NULL == src || NULL == dst)
+      return NULL;
+
+    char* cp = dst;
+
+    while ((char16)'\0' != *src) {
+      *cp = static_cast<char>(*src);
+      cp++;
+      src++;
+    }
+    *cp = *src;
+
+    return dst;
+  }
+
+#ifdef __cplusplus
+}
+#endif
+}  // namespace ime_pinyin