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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* Copyright (c) 2026-present Eclipse ThreadX contributors |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Utility (Utility) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_utility.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_utility_utf8_string_character_get PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function convert a unicode to a utf8. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* unicode Unicode to convert */ |
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/* return_utf8_str Returned utf8 string */ |
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/* return_utf8_size utf8 string size */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* GUIX Internal Code */ |
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/* */ |
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/**************************************************************************/ |
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#ifdef GX_UTF8_SUPPORT |
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UINT _gx_utility_unicode_to_utf8(ULONG unicode, GX_UBYTE *return_utf8_str, UINT *return_utf8_size) |
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{ |
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✓✓ |
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if (unicode < 0x0080) |
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{ |
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*return_utf8_size = 1; |
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return_utf8_str[0] = (GX_UBYTE)unicode; |
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} |
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✓✓ |
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else if (unicode < 0x0800) |
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{ |
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*return_utf8_size = 2; |
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return_utf8_str[0] = (GX_UBYTE)(0xC0 + (GX_UBYTE)((unicode & 0x7C0) >> 6)); |
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return_utf8_str[1] = (GX_UBYTE)(0x80 + (unicode & 0x3F)); |
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} |
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✓✓ |
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else if (unicode < 0x10000) |
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{ |
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*return_utf8_size = 3; |
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return_utf8_str[0] = (GX_UBYTE)(0xE0 + (GX_UBYTE)((unicode & 0xF000) >> 12)); |
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return_utf8_str[1] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0) >> 6)); |
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return_utf8_str[2] = (GX_UBYTE)(0x80 + (unicode & 0x3F)); |
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} |
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✓✓ |
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else if (unicode < 0x200000) |
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{ |
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*return_utf8_size = 4; |
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return_utf8_str[0] = (GX_UBYTE)(0xF0 + (GX_UBYTE)((unicode & 0x1C0000) >> 18)); |
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return_utf8_str[1] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0x3F000) >> 12)); |
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return_utf8_str[2] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0) >> 6)); |
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return_utf8_str[3] = (GX_UBYTE)(0x80 + (unicode & 0x3F)); |
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} |
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✓✓ |
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else if (unicode < 0x4000000) |
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{ |
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*return_utf8_size = 5; |
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return_utf8_str[0] = (GX_UBYTE)(0xFC + (GX_UBYTE)((unicode & 0x3000000) >> 24)); |
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return_utf8_str[1] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0000) >> 18)); |
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return_utf8_str[2] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0x3F000) >> 12)); |
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return_utf8_str[3] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0) >> 6)); |
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return_utf8_str[4] = (GX_UBYTE)(0x80 + (unicode & 0x3F)); |
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} |
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else |
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{ |
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*return_utf8_size = 6; |
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return_utf8_str[0] = (GX_UBYTE)(0xFC + (GX_UBYTE)((unicode & 0x40000000) >> 30)); |
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return_utf8_str[1] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0x3F000000) >> 24)); |
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return_utf8_str[2] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0000) >> 18)); |
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return_utf8_str[3] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0x3F000) >> 12)); |
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return_utf8_str[4] = (GX_UBYTE)(0x80 + (GX_UBYTE)((unicode & 0xFC0) >> 6)); |
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return_utf8_str[5] = (GX_UBYTE)(0x80 + (unicode & 0x3F)); |
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} |
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return GX_SUCCESS; |
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} |
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#endif /* GX_UTF8_SUPPORT */ |
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