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713f74f4f9
Import the code from gst-plugins-rs (origin is https://github.com/szatmary/libcaption) Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4929>
129 lines
4.5 KiB
C
129 lines
4.5 KiB
C
/**********************************************************************************************/
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/* The MIT License */
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/* */
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/* Copyright 2016-2017 Twitch Interactive, Inc. or its affiliates. All Rights Reserved. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining a copy */
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/* of this software and associated documentation files (the "Software"), to deal */
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/* in the Software without restriction, including without limitation the rights */
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/* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell */
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/* copies of the Software, and to permit persons to whom the Software is */
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/* furnished to do so, subject to the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be included in */
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/* all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
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/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
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/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
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/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
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/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN */
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/* THE SOFTWARE. */
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/**********************************************************************************************/
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#ifndef LIBCAPTION_UTF8_H
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#define LIBCAPTION_UTF8_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <inttypes.h>
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#include <stddef.h>
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// These types exist to make the code more self dcoumenting
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// utf8_char_t point is a null teminate string of utf8 encodecd chars
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//
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// utf8_size_t is the length of a string in chars
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// size_t is bytes
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typedef char utf8_char_t;
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typedef size_t utf8_size_t;
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/*! \brief
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\param
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Skiped continuation bytes
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*/
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const utf8_char_t* utf8_char_next(const utf8_char_t* c);
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/*! \brief
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\param
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returnes the length of the char in bytes
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*/
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size_t utf8_char_length(const utf8_char_t* c);
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/*! \brief
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\param
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returns 1 if first charcter is white space
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*/
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int utf8_char_whitespace(const utf8_char_t* c);
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/*! \brief
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\param
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returns length of the string in bytes
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size is number of charcter to count (0 to count until NULL term)
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*/
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size_t utf8_string_length(const utf8_char_t* data, utf8_size_t size);
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/*! \brief
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\param
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*/
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size_t utf8_char_copy(utf8_char_t* dst, const utf8_char_t* src);
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/*! \brief
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\param
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returnes the number of utf8 charcters in a string givne the numbe of bytes
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to coutn until the a null terminator, pass 0 for size
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*/
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utf8_size_t utf8_char_count(const char* data, size_t size);
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/*! \brief
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\param
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returnes the length of the line in bytes triming not printable characters at the end
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*/
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utf8_size_t utf8_trimmed_length(const utf8_char_t* data, utf8_size_t charcters);
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/*! \brief
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\param
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returns the length in bytes of the line including the new line charcter(s)
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auto detects between windows(CRLF), unix(LF), mac(CR) and riscos (LFCR) line endings
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*/
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size_t utf8_line_length(const utf8_char_t* data);
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/*! \brief
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\param
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returns number of chars to include before split
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*/
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utf8_size_t utf8_wrap_length(const utf8_char_t* data, utf8_size_t size);
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/*! \brief
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\param
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returns number of new lines in the string
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*/
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int utf8_line_count(const utf8_char_t* data);
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/*! \brief
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\param
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size in/out. In the the max seize, out is the size read;
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returns number of new lins in teh string
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*/
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#define UFTF_DEFAULT_MAX_FILE_SIZE = (50 * 1024 * 1024);
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utf8_char_t* utf8_load_text_file(const char* path, size_t* size);
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/*! \brief
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\param
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Compares 2 strings up to max len
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*/
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#ifndef strnstr
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char* strnstr(const char* string1, const char* string2, size_t len);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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