| /* |
| * 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. |
| */ |
| |
| |
| #ifndef _GUAC_UNICODE_H |
| #define _GUAC_UNICODE_H |
| |
| /** |
| * Provides functions for manipulating Unicode strings. |
| * |
| * @file unicode.h |
| */ |
| |
| #include <stddef.h> |
| |
| /** |
| * Given the initial byte of a single UTF-8 character, returns the overall |
| * byte size of the entire character. |
| * |
| * @param c The initial byte of the character to check. |
| * @return The number of bytes in the given character overall. |
| */ |
| size_t guac_utf8_charsize(unsigned char c); |
| |
| /** |
| * Given a UTF-8-encoded string, returns the length of the string in characters |
| * (not bytes). |
| * |
| * @param str The UTF-8 string to calculate the length of. |
| * @return The length in characters of the given UTF-8 string. |
| */ |
| size_t guac_utf8_strlen(const char* str); |
| |
| /** |
| * Given destination buffer and its length, writes the given codepoint as UTF-8 |
| * to the buffer, returning the number of bytes written. If there is not enough |
| * space in the buffer to write the character, no bytes are written at all. |
| * |
| * @param codepoint The Unicode codepoint to write to the buffer. |
| * @param utf8 The buffer to write to. |
| * @param length The length of the buffer, in bytes. |
| * @return The number of bytes written, which may be zero if there is not |
| * enough space in the buffer to write the UTF-8 character. |
| */ |
| int guac_utf8_write(int codepoint, char* utf8, int length); |
| |
| /** |
| * Given a buffer containing UTF-8 characters, reads the first codepoint in the |
| * buffer, returning the length of the codepoint in bytes. If no codepoint |
| * could be read, zero is returned. |
| * |
| * @param utf8 A buffer containing UTF-8 characters. |
| * @param length The length of the buffer, in bytes. |
| * @param codepoint A pointer to an integer which will contain the codepoint |
| * read, if any. If no character can be read, the integer |
| * will be left untouched. |
| * @return The number of bytes read, which may be zero if there is not enough |
| * space in the buffer to read a character. |
| */ |
| int guac_utf8_read(const char* utf8, int length, int* codepoint); |
| |
| #endif |
| |