90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/* SPDX-FileCopyrightText: 2012 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup intern_utf_conv
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*/
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#ifndef __UTFCONV_H__
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#define __UTFCONV_H__
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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/**
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* Counts how many bytes is required for future utf-8 string using utf-16
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* \param string16: pointer to working utf-16 string
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* \return How many bytes must be allocated including NULL.
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*/
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size_t count_utf_8_from_16(const wchar_t *string16);
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/**
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* Counts how many wchar_t (two byte) is required for future utf-16 string using utf-8
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* \param string8: pointer to working utf-8 string
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* \return How many bytes must be allocated including NULL.
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*/
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size_t count_utf_16_from_8(const char *string8);
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/*
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* conv_utf_*** errors
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*/
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/** Error occurs when required parameter is missing. */
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#define UTF_ERROR_NULL_IN (1 << 0)
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/** Error if character is in illegal UTF range. */
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#define UTF_ERROR_ILLCHAR (1 << 1)
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/** Passed size is to small. It gives legal string with character missing at the end. */
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#define UTF_ERROR_SMALL (1 << 2)
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/** Error if sequence is broken and doesn't finish. */
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#define UTF_ERROR_ILLSEQ (1 << 3)
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/**
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* Converts utf-16 string to allocated utf-8 string
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* \param in16: utf-16 string to convert
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* \param out8: utf-8 string to string the conversion
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* \param size8: the allocated size in bytes of out8
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* \return Returns any errors occurred during conversion. See the block above,
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*/
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int conv_utf_16_to_8(const wchar_t *in16, char *out8, size_t size8);
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/**
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* Converts utf-8 string to allocated utf-16 string
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* \param in8: utf-8 string to convert
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* \param out16: utf-16 string to string the conversion
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* \param size16: the allocated size in wchar_t (two byte) of out16
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* \return Returns any errors occurred during conversion. See the block above,
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*/
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int conv_utf_8_to_16(const char *in8, wchar_t *out16, size_t size16);
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/**
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* Allocates and converts the utf-8 string from utf-16
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* \param in16: utf-16 string to convert
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* \param add: any additional size which will be allocated for new utf-8 string in bytes
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* \return New allocated and converted utf-8 string or NULL if in16 is 0.
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*/
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char *alloc_utf_8_from_16(const wchar_t *in16, size_t add);
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/**
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* Allocates and converts the utf-16 string from utf-8
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* \param in8: utf-8 string to convert
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* \param add: any additional size which will be allocated for new utf-16 string
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* in wchar_t (two bytes)
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* \return New allocated and converted utf-16 string or NULL if in8 is 0.
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*/
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wchar_t *alloc_utf16_from_8(const char *in8, size_t add);
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/* Easy allocation and conversion of new utf-16 string. New string has _16 suffix.
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* Must be deallocated with UTF16_UN_ENCODE in right order. */
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#define UTF16_ENCODE(in8str) \
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if (1) { \
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wchar_t *in8str##_16 = alloc_utf16_from_8((const char *)in8str, 0)
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#define UTF16_UN_ENCODE(in8str) \
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free(in8str##_16); \
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} \
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(void)0
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#endif /* __UTFCONV_H__ */
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