| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you 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 "util/EtchUtil.h" |
| |
| status_t etch_strcpy_s(char *dst, size_t dstSize, const char *src) { |
| char *d, *end; |
| |
| if (dst == NULL || src == NULL) { |
| return ETCH_EINVAL; |
| } |
| |
| if (dstSize == 0) { |
| return ETCH_ERANGE; |
| } |
| |
| d = dst; |
| end = dst + dstSize - 1; |
| |
| for (; d < end; ++d, ++src) { |
| if (!(*d = *src)) { |
| return ETCH_OK; |
| } |
| } |
| |
| // if src buffer is not 0 now, then we have bytes left in src --> error |
| if (!(*d = *src)) { |
| return ETCH_OK; |
| } else { |
| // always null terminate |
| *d = '\0'; |
| return ETCH_EINVAL; |
| } |
| } |
| |
| status_t etch_strlen_utf8(const char *src, capu::uint32_t &length) { |
| if (src == NULL) |
| return ETCH_EINVAL; |
| length = 0; |
| for (capu::int32_t i = 0; src[i] != 0;) { |
| if (!(src[i] & (0x80))) { |
| //1 byte character |
| i++; |
| length++; |
| } else if ((src[i] & (0xF0)) == 0xF0) { |
| //4 byte character |
| i = i + 4; |
| length++; |
| } else if ((src[i] & (0xE0)) == 0xE0) { |
| //3 byte character |
| i = i + 3; |
| length++; |
| } else if ((src[i] & (0xC0)) == 0xC0) { |
| //2 byte character |
| i = i + 2; |
| length++; |
| } else { |
| return ETCH_ERROR; |
| } |
| } |
| return ETCH_OK; |
| } |