mirror of
https://github.com/zhenyan121/Cubed.git
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feature: chat (#36)
* fix(config): load config on demand in get/set instead of asserting * feat(chat): implement in-game chat box with UTF-8 support - Add ChatMessage struct and ChatBox widget for displaying and sending messages - Introduce split_utf8() in text_tools for splitting UTF-8 strings by character count - Add TimeTools utility (get_time_ticks) for message timestamps - Update TextField with start_typing/stop_typing methods and set_typing() - Integrate text input handling in WorldScene and WorldUIManager for chat - Add utf8cpp library for robust UTF-8 validation and processing - Add ChatBox rendering and input logic (src/ui/chat_box.cpp) - Register ChatBox source in CMakeLists.txt - Fix Renderer::render_lable to skip rendering if VAO is null - Update credits to include utf8cpp library * fix(ui): correct chat box layout with dynamic height and bottom anchor * feat(chat): implement client-server chat messaging Add protobuf definition for ChatMsg, new packet ID CHAT_MSG (4001), and handle sending/receiving chat messages on both client and server side. Wire up UI components (ChatBox, TextField) to allow message input and display, including a message queue in ClientWorld for thread-safe processing. Also add default initialization for ChatMessage::time. * feat(chat): distinguish between send and cancel in chat input * feat(ui): add background to Label widget and refactor debug overlay * refactor(ui): decouple ChatBox from image dependencies, allow custom TextField backgrounds TextField's background is now a generic `Widget` pointer, enabling use of any widget (e.g., `Rect`, `Image`) as background. `ChatBox` no longer creates its own `TextField`; it accepts one via `set_text_field`. Removed `set_d_image` and `set_default_image` in favor of `set_background`. Added a shared default image constant in `default_image.hpp`. Updated `host_game_ui.cpp`, `join_game_ui.cpp`, and `world_ui_manager.cpp` to construct backgrounds accordingly. * refactor(ui): move width, height, and fill properties to base Widget Consolidate width, height, and fill (fill_parent, fill_width, fill_height) into the base Widget class. Replace per-widget set_fill(bool) with set_fill_parent(bool), set_fill_width(bool), and set_fill_height(bool). * refactor(ui): generalize Label background, add ChatBox width method * feat(chat): implement message expiration after 5 seconds * feat(ui): add word wrap for chat messages with font width measurement * feat(audio): implement voice chat using Opus codec Add voice chat support with Opus encoding/decoding, push-to-talk (V key), and new audio recording infrastructure. * feat(audio): implement voice chat with Opus codec and streaming audio source Add AudioStreamSource for continuous PCM playback. Refactor voice send/receive to encode with Opus and stream to a dedicated source instead of per-frame sources. Enable voice transmission over network. * feat(audio): add spatial voice source with underwater effects Update voice source to support spatial positioning, low-pass filter, and reverb effect for underwater immersion. Adjust source pool size and low-pass filter parameter. Correct receive_voice parameter type. * feat(settings): add player voice volume and voice input type options - Add player voice volume slider and voice input type combo in settings UI. - Add localization strings for player voice and voice input types. - Add config overloads for const char* default values. - Implement voice input types (PTT, always, off) in world scene. - Refactor WorldScene member order and add load_config method. - Update audio engine to use player voice volume. - Downgrade some logging to debug. * fix(event): delegate error UI events to each handler Move error UI event check from top of handle_event into each individual event handler (mouse_move, mouse_button, mouse_wheel, key, text_input). Also flatten window resize dispatch: all sub-handlers are called regardless of previous handler return values, and the method always returns false. * feat(chat): add colored system messages for player join/exit * chore(logging): reduce verbosity for audio loading and input events * fix(settings): fix typo in config key "vloume" * feat(ui): add microphone icon when recording voice * feat(voice): limit voice message range to 48 units * chore(logging): downgrade text input log level to debug * feat(credits): add license identifiers and reorganize license files * feat: add sensitive word filter for chat messages Implement AC automaton-based filtering using a sensitive lexicon loaded from a JSON asset file. The filter is applied to both player names and chat messages before broadcasting, and can be toggled via the `sensitive_filter` config option. * feat(server): add config option to disable voice chat * fix: correct utf8 validation, add missing include, remove debug log
This commit is contained in:
zhenyan121
610
include/utf8cpp/utf8/core.h
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610
include/utf8cpp/utf8/core.h
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@@ -0,0 +1,610 @@
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// Copyright 2006 Nemanja Trifunovic
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/*
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Permission is hereby granted, free of charge, to any person or organization
|
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obtaining a copy of the software and accompanying documentation covered by
|
||||
this license (the "Software") to use, reproduce, display, distribute,
|
||||
execute, and transmit the Software, and to prepare derivative works of the
|
||||
Software, and to permit third-parties to whom the Software is furnished to
|
||||
do so, all subject to the following:
|
||||
|
||||
The copyright notices in the Software and this entire statement, including
|
||||
the above license grant, this restriction and the following disclaimer,
|
||||
must be included in all copies of the Software, in whole or in part, and
|
||||
all derivative works of the Software, unless such copies or derivative
|
||||
works are solely in the form of machine-executable object code generated by
|
||||
a source language processor.
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||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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||||
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
||||
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
||||
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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||||
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifndef UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#define UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
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#include <iterator>
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#include <cstring>
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#include <string>
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// Determine the C++ standard version.
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// If the user defines UTF_CPP_CPLUSPLUS, use that.
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// Otherwise, trust the unreliable predefined macro __cplusplus
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#if !defined UTF_CPP_CPLUSPLUS
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#define UTF_CPP_CPLUSPLUS __cplusplus
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#endif
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#if UTF_CPP_CPLUSPLUS >= 201103L // C++ 11 or later
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#define UTF_CPP_OVERRIDE override
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#define UTF_CPP_NOEXCEPT noexcept
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#define UTF_CPP_STATIC_ASSERT(condition) static_assert(condition, "UTFCPP static assert");
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#else // C++ 98/03
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#define UTF_CPP_OVERRIDE
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#define UTF_CPP_NOEXCEPT throw()
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// Not worth simulating static_assert:
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#define UTF_CPP_STATIC_ASSERT(condition) (void)(condition);
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#endif // C++ 11 or later
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namespace utf8
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{
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// The typedefs for 8-bit, 16-bit and 32-bit code units
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#if UTF_CPP_CPLUSPLUS >= 201103L // C++ 11 or later
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#if UTF_CPP_CPLUSPLUS >= 202002L // C++ 20 or later
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typedef char8_t utfchar8_t;
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#else // C++ 11/14/17
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typedef unsigned char utfchar8_t;
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#endif
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typedef char16_t utfchar16_t;
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typedef char32_t utfchar32_t;
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#else // C++ 98/03
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typedef unsigned char utfchar8_t;
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typedef unsigned short utfchar16_t;
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typedef unsigned int utfchar32_t;
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#endif // C++ 11 or later
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// Helper code - not intended to be directly called by the library users. May be changed at any time
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namespace internal
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{
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// Unicode constants
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// Leading (high) surrogates: 0xd800 - 0xdbff
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// Trailing (low) surrogates: 0xdc00 - 0xdfff
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const utfchar16_t LEAD_SURROGATE_MIN = 0xd800u;
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const utfchar16_t LEAD_SURROGATE_MAX = 0xdbffu;
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const utfchar16_t TRAIL_SURROGATE_MIN = 0xdc00u;
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const utfchar16_t TRAIL_SURROGATE_MAX = 0xdfffu;
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const utfchar16_t LEAD_OFFSET = 0xd7c0u; // LEAD_SURROGATE_MIN - (0x10000 >> 10)
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const utfchar32_t SURROGATE_OFFSET = 0xfca02400u; // 0x10000u - (LEAD_SURROGATE_MIN << 10) - TRAIL_SURROGATE_MIN
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// Maximum valid value for a Unicode code point
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const utfchar32_t CODE_POINT_MAX = 0x0010ffffu;
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template<typename octet_type>
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inline utfchar8_t mask8(octet_type oc)
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{
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return static_cast<utfchar8_t>(0xff & oc);
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}
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template<typename u16_type>
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inline utfchar16_t mask16(u16_type oc)
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{
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return static_cast<utfchar16_t>(0xffff & oc);
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}
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template<typename octet_type>
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inline bool is_trail(octet_type oc)
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{
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return ((utf8::internal::mask8(oc) >> 6) == 0x2);
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}
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inline bool is_lead_surrogate(utfchar32_t cp)
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{
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return (cp >= static_cast<utfchar32_t>(LEAD_SURROGATE_MIN) && cp <= static_cast<utfchar32_t>(LEAD_SURROGATE_MAX));
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}
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inline bool is_trail_surrogate(utfchar32_t cp)
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{
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return (cp >= static_cast<utfchar32_t>(TRAIL_SURROGATE_MIN) && cp <= static_cast<utfchar32_t>(TRAIL_SURROGATE_MAX));
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}
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inline bool is_surrogate(utfchar32_t cp)
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{
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return (cp >= static_cast<utfchar32_t>(LEAD_SURROGATE_MIN) && cp <= static_cast<utfchar32_t>(TRAIL_SURROGATE_MAX));
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}
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inline bool is_code_point_valid(utfchar32_t cp)
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{
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return (cp <= CODE_POINT_MAX && !utf8::internal::is_surrogate(cp));
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}
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inline bool is_in_bmp(utfchar32_t cp)
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{
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return cp < utfchar32_t(0x10000);
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}
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template <typename octet_iterator>
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int sequence_length(octet_iterator lead_it)
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{
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const utfchar8_t lead = utf8::internal::mask8(*lead_it);
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if (lead < 0x80)
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return 1;
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else if ((lead >> 5) == 0x6)
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return 2;
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else if ((lead >> 4) == 0xe)
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return 3;
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else if ((lead >> 3) == 0x1e)
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return 4;
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else
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return 0;
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}
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inline bool is_overlong_sequence(utfchar32_t cp, int length)
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{
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if (cp < 0x80) {
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if (length != 1)
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return true;
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}
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else if (cp < 0x800) {
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if (length != 2)
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return true;
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}
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else if (cp < 0x10000) {
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if (length != 3)
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return true;
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}
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return false;
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}
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enum utf_error {UTF8_OK, NOT_ENOUGH_ROOM, INVALID_LEAD, INCOMPLETE_SEQUENCE, OVERLONG_SEQUENCE, INVALID_CODE_POINT};
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/// Helper for get_sequence_x
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template <typename octet_iterator>
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utf_error increase_safely(octet_iterator& it, const octet_iterator end)
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{
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if (++it == end)
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return NOT_ENOUGH_ROOM;
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if (!utf8::internal::is_trail(*it))
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return INCOMPLETE_SEQUENCE;
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return UTF8_OK;
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}
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#define UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(IT, END) {utf_error ret = increase_safely(IT, END); if (ret != UTF8_OK) return ret;}
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/// get_sequence_x functions decode utf-8 sequences of the length x
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template <typename octet_iterator>
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utf_error get_sequence_1(octet_iterator& it, octet_iterator end, utfchar32_t& code_point)
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{
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if (it == end)
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return NOT_ENOUGH_ROOM;
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code_point = static_cast<utfchar32_t>(utf8::internal::mask8(*it));
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return UTF8_OK;
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}
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template <typename octet_iterator>
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utf_error get_sequence_2(octet_iterator& it, octet_iterator end, utfchar32_t& code_point)
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{
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if (it == end)
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return NOT_ENOUGH_ROOM;
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code_point = static_cast<utfchar32_t>(utf8::internal::mask8(*it));
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = ((code_point << 6) & 0x7ff) + ((*it) & 0x3f);
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return UTF8_OK;
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}
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template <typename octet_iterator>
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utf_error get_sequence_3(octet_iterator& it, octet_iterator end, utfchar32_t& code_point)
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{
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if (it == end)
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return NOT_ENOUGH_ROOM;
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code_point = static_cast<utfchar32_t>(utf8::internal::mask8(*it));
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = ((code_point << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = static_cast<utfchar32_t>(code_point + ((*it) & 0x3f));
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return UTF8_OK;
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}
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template <typename octet_iterator>
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utf_error get_sequence_4(octet_iterator& it, octet_iterator end, utfchar32_t& code_point)
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{
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if (it == end)
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return NOT_ENOUGH_ROOM;
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code_point = static_cast<utfchar32_t>(utf8::internal::mask8(*it));
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = ((code_point << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = static_cast<utfchar32_t>(code_point + ((utf8::internal::mask8(*it) << 6) & 0xfff));
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UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
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code_point = static_cast<utfchar32_t>(code_point + ((*it) & 0x3f));
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return UTF8_OK;
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}
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#undef UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR
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template <typename octet_iterator>
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utf_error validate_next(octet_iterator& it, octet_iterator end, utfchar32_t& code_point)
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{
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if (it == end)
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return NOT_ENOUGH_ROOM;
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// Save the original value of it so we can go back in case of failure
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// Of course, it does not make much sense with i.e. stream iterators
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octet_iterator original_it = it;
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utfchar32_t cp = 0;
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// Determine the sequence length based on the lead octet
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const int length = utf8::internal::sequence_length(it);
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// Get trail octets and calculate the code point
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utf_error err = UTF8_OK;
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switch (length) {
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case 0:
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return INVALID_LEAD;
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case 1:
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err = utf8::internal::get_sequence_1(it, end, cp);
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// No need for further validations
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if (err == UTF8_OK) {
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code_point = cp;
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++it;
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return UTF8_OK;
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} else {
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it = original_it;
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return err;
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}
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break; // just to make sure there are no warnings
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case 2:
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err = utf8::internal::get_sequence_2(it, end, cp);
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break;
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case 3:
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err = utf8::internal::get_sequence_3(it, end, cp);
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break;
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case 4:
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err = utf8::internal::get_sequence_4(it, end, cp);
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break;
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}
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if (err == UTF8_OK) {
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// Decoding succeeded. Now, security checks...
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if (utf8::internal::is_code_point_valid(cp)) {
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if (!utf8::internal::is_overlong_sequence(cp, length)){
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// Passed! Return here.
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code_point = cp;
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++it;
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return UTF8_OK;
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}
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else
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err = OVERLONG_SEQUENCE;
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}
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else
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err = INVALID_CODE_POINT;
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}
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// Failure branch - restore the original value of the iterator
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it = original_it;
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return err;
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}
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template <typename octet_iterator>
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inline utf_error validate_next(octet_iterator& it, octet_iterator end) {
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if (it == end)
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return NOT_ENOUGH_ROOM;
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octet_iterator original_it = it;
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const utfchar8_t lead = utf8::internal::mask8(*it);
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if (lead < 0x80) {
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++it;
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return UTF8_OK;
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} else if ((lead & 0xE0) == 0xC0) {
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// two-byte sequence
|
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if (lead == 0xC0 || lead == 0xC1) {
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it = original_it;
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return OVERLONG_SEQUENCE;
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}
|
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if (++it == end) {
|
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it = original_it;
|
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return NOT_ENOUGH_ROOM;
|
||||
}
|
||||
const utfchar8_t trail1 = utf8::internal::mask8(*it);
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if ((trail1 & 0xC0) != 0x80) {
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it = original_it;
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return INCOMPLETE_SEQUENCE;
|
||||
}
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++it;
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return UTF8_OK;
|
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} else if ((lead & 0xF0) == 0xE0) {
|
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// three-byte sequence
|
||||
if (++it == end) {
|
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it = original_it;
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return NOT_ENOUGH_ROOM;
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}
|
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const utfchar8_t trail1 = utf8::internal::mask8(*it);
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if ((trail1 & 0xC0) != 0x80) {
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it = original_it;
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return INCOMPLETE_SEQUENCE;
|
||||
}
|
||||
if (++it == end) {
|
||||
it = original_it;
|
||||
return NOT_ENOUGH_ROOM;
|
||||
}
|
||||
const utfchar8_t trail2 = utf8::internal::mask8(*it);
|
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if ((trail2 & 0xC0) != 0x80) {
|
||||
it = original_it;
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||||
return INCOMPLETE_SEQUENCE;
|
||||
}
|
||||
if (lead == 0xE0 && trail1 < 0xA0) {
|
||||
it = original_it;
|
||||
return OVERLONG_SEQUENCE;
|
||||
}
|
||||
if (lead == 0xED && trail1 > 0x9F) {
|
||||
it = original_it;
|
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return INVALID_CODE_POINT;
|
||||
}
|
||||
++it;
|
||||
return UTF8_OK;
|
||||
} else if ((lead & 0xF8) == 0xF0) {
|
||||
// four-byte sequence
|
||||
if (++it == end) {
|
||||
it = original_it;
|
||||
return NOT_ENOUGH_ROOM;
|
||||
}
|
||||
const utfchar8_t trail1 = utf8::internal::mask8(*it);
|
||||
if ((trail1 & 0xC0) != 0x80) {
|
||||
it = original_it;
|
||||
return INCOMPLETE_SEQUENCE;
|
||||
}
|
||||
if (++it == end) {
|
||||
it = original_it;
|
||||
return NOT_ENOUGH_ROOM;
|
||||
}
|
||||
const utfchar8_t trail2 = utf8::internal::mask8(*it);
|
||||
if ((trail2 & 0xC0) != 0x80) {
|
||||
it = original_it;
|
||||
return INCOMPLETE_SEQUENCE;
|
||||
}
|
||||
if (++it == end) {
|
||||
it = original_it;
|
||||
return NOT_ENOUGH_ROOM;
|
||||
}
|
||||
const utfchar8_t trail3 = utf8::internal::mask8(*it);
|
||||
if ((trail3 & 0xC0) != 0x80) {
|
||||
it = original_it;
|
||||
return INCOMPLETE_SEQUENCE;
|
||||
}
|
||||
if (lead == 0xF0 && trail1 < 0x90) {
|
||||
it = original_it;
|
||||
return OVERLONG_SEQUENCE;
|
||||
}
|
||||
if (lead == 0xF4 && trail1 > 0x8F) {
|
||||
it = original_it;
|
||||
return INVALID_CODE_POINT;
|
||||
}
|
||||
if (lead >= 0xF5) {
|
||||
it = original_it;
|
||||
return INVALID_CODE_POINT;
|
||||
}
|
||||
++it;
|
||||
return UTF8_OK;
|
||||
} else {
|
||||
it = original_it;
|
||||
return INVALID_LEAD;
|
||||
}
|
||||
}
|
||||
|
||||
template <typename word_iterator>
|
||||
utf_error validate_next16(word_iterator& it, word_iterator end, utfchar32_t& code_point)
|
||||
{
|
||||
// Make sure the iterator dereferences a large enough type
|
||||
typedef typename std::iterator_traits<word_iterator>::value_type word_type;
|
||||
UTF_CPP_STATIC_ASSERT(sizeof(word_type) >= sizeof(utfchar16_t));
|
||||
// Check the edge case:
|
||||
if (it == end)
|
||||
return NOT_ENOUGH_ROOM;
|
||||
// Save the original value of it so we can go back in case of failure
|
||||
// Of course, it does not make much sense with i.e. stream iterators
|
||||
word_iterator original_it = it;
|
||||
|
||||
utf_error err = UTF8_OK;
|
||||
|
||||
const utfchar16_t first_word = *it++;
|
||||
if (!is_surrogate(first_word)) {
|
||||
code_point = first_word;
|
||||
return UTF8_OK;
|
||||
}
|
||||
else {
|
||||
if (it == end)
|
||||
err = NOT_ENOUGH_ROOM;
|
||||
else if (is_lead_surrogate(first_word)) {
|
||||
const utfchar16_t second_word = *it++;
|
||||
if (is_trail_surrogate(static_cast<utfchar32_t>(second_word))) {
|
||||
code_point = static_cast<utfchar32_t>(first_word << 10) + static_cast<utfchar32_t>(second_word) + SURROGATE_OFFSET;
|
||||
return UTF8_OK;
|
||||
} else
|
||||
err = INCOMPLETE_SEQUENCE;
|
||||
|
||||
} else {
|
||||
err = INVALID_LEAD;
|
||||
}
|
||||
}
|
||||
// error branch
|
||||
it = original_it;
|
||||
return err;
|
||||
}
|
||||
|
||||
// Internal implementation of both checked and unchecked append() function
|
||||
// This function will be invoked by the overloads below, as they will know
|
||||
// the octet_type.
|
||||
template <typename octet_iterator, typename octet_type>
|
||||
octet_iterator append(utfchar32_t cp, octet_iterator result) {
|
||||
if (cp < 0x80) // one octet
|
||||
*(result++) = static_cast<octet_type>(cp);
|
||||
else if (cp < 0x800) { // two octets
|
||||
*(result++) = static_cast<octet_type>((cp >> 6) | 0xc0);
|
||||
*(result++) = static_cast<octet_type>((cp & 0x3f) | 0x80);
|
||||
}
|
||||
else if (cp < 0x10000) { // three octets
|
||||
*(result++) = static_cast<octet_type>((cp >> 12) | 0xe0);
|
||||
*(result++) = static_cast<octet_type>(((cp >> 6) & 0x3f) | 0x80);
|
||||
*(result++) = static_cast<octet_type>((cp & 0x3f) | 0x80);
|
||||
}
|
||||
else { // four octets
|
||||
*(result++) = static_cast<octet_type>((cp >> 18) | 0xf0);
|
||||
*(result++) = static_cast<octet_type>(((cp >> 12) & 0x3f)| 0x80);
|
||||
*(result++) = static_cast<octet_type>(((cp >> 6) & 0x3f) | 0x80);
|
||||
*(result++) = static_cast<octet_type>((cp & 0x3f) | 0x80);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
// One of the following overloads will be invoked from the API calls
|
||||
|
||||
// A simple (but dangerous) case: the caller appends byte(s) to a char array
|
||||
inline char* append(utfchar32_t cp, char* result) {
|
||||
return append<char*, char>(cp, result);
|
||||
}
|
||||
|
||||
// Hopefully, most common case: the caller uses back_inserter
|
||||
// i.e. append(cp, std::back_inserter(str));
|
||||
template<typename container_type>
|
||||
std::back_insert_iterator<container_type> append
|
||||
(utfchar32_t cp, std::back_insert_iterator<container_type> result) {
|
||||
return append<std::back_insert_iterator<container_type>,
|
||||
typename container_type::value_type>(cp, result);
|
||||
}
|
||||
|
||||
// The caller uses some other kind of output operator - not covered above
|
||||
// Note that in this case we are not able to determine octet_type
|
||||
// so we assume it's utfchar8_t; that can cause a conversion warning if we are wrong.
|
||||
template <typename octet_iterator>
|
||||
octet_iterator append(utfchar32_t cp, octet_iterator result) {
|
||||
return append<octet_iterator, utfchar8_t>(cp, result);
|
||||
}
|
||||
|
||||
// Internal implementation of both checked and unchecked append16() function
|
||||
// This function will be invoked by the overloads below, as they will know
|
||||
// the word_type.
|
||||
template <typename word_iterator, typename word_type>
|
||||
word_iterator append16(utfchar32_t cp, word_iterator result) {
|
||||
UTF_CPP_STATIC_ASSERT(sizeof(word_type) >= sizeof(utfchar16_t));
|
||||
if (is_in_bmp(cp))
|
||||
*(result++) = static_cast<word_type>(cp);
|
||||
else {
|
||||
// Code points from the supplementary planes are encoded via surrogate pairs
|
||||
*(result++) = static_cast<word_type>(LEAD_OFFSET + (cp >> 10));
|
||||
*(result++) = static_cast<word_type>(TRAIL_SURROGATE_MIN + (cp & 0x3FF));
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
// Hopefully, most common case: the caller uses back_inserter
|
||||
// i.e. append16(cp, std::back_inserter(str));
|
||||
template<typename container_type>
|
||||
std::back_insert_iterator<container_type> append16
|
||||
(utfchar32_t cp, std::back_insert_iterator<container_type> result) {
|
||||
return append16<std::back_insert_iterator<container_type>,
|
||||
typename container_type::value_type>(cp, result);
|
||||
}
|
||||
|
||||
// The caller uses some other kind of output operator - not covered above
|
||||
// Note that in this case we are not able to determine word_type
|
||||
// so we assume it's utfchar16_t; that can cause a conversion warning if we are wrong.
|
||||
template <typename word_iterator>
|
||||
word_iterator append16(utfchar32_t cp, word_iterator result) {
|
||||
return append16<word_iterator, utfchar16_t>(cp, result);
|
||||
}
|
||||
|
||||
} // namespace internal
|
||||
|
||||
/// The library API - functions intended to be called by the users
|
||||
|
||||
// Byte order mark
|
||||
const utfchar8_t bom[] = {0xef, 0xbb, 0xbf};
|
||||
|
||||
template <typename octet_iterator>
|
||||
octet_iterator find_invalid(octet_iterator start, octet_iterator end)
|
||||
{
|
||||
octet_iterator result = start;
|
||||
while (result != end) {
|
||||
utf8::internal::utf_error err_code = utf8::internal::validate_next(result, end);
|
||||
if (err_code != internal::UTF8_OK)
|
||||
return result;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
inline const char* find_invalid(const char* str)
|
||||
{
|
||||
const char* end = str + std::strlen(str);
|
||||
return find_invalid(str, end);
|
||||
}
|
||||
|
||||
inline std::size_t find_invalid(const std::string& s)
|
||||
{
|
||||
std::string::const_iterator invalid = find_invalid(s.begin(), s.end());
|
||||
return (invalid == s.end()) ? std::string::npos : static_cast<std::size_t>(invalid - s.begin());
|
||||
}
|
||||
|
||||
template <typename octet_iterator>
|
||||
inline bool is_valid(octet_iterator start, octet_iterator end)
|
||||
{
|
||||
return (utf8::find_invalid(start, end) == end);
|
||||
}
|
||||
|
||||
inline bool is_valid(const char* str)
|
||||
{
|
||||
return (*(utf8::find_invalid(str)) == '\0');
|
||||
}
|
||||
|
||||
inline bool is_valid(const std::string& s)
|
||||
{
|
||||
return is_valid(s.begin(), s.end());
|
||||
}
|
||||
|
||||
|
||||
|
||||
template <typename octet_iterator>
|
||||
inline bool starts_with_bom (octet_iterator it, octet_iterator end)
|
||||
{
|
||||
return (
|
||||
((it != end) && (utf8::internal::mask8(*it++)) == bom[0]) &&
|
||||
((it != end) && (utf8::internal::mask8(*it++)) == bom[1]) &&
|
||||
((it != end) && (utf8::internal::mask8(*it)) == bom[2])
|
||||
);
|
||||
}
|
||||
|
||||
inline bool starts_with_bom(const std::string& s)
|
||||
{
|
||||
return starts_with_bom(s.begin(), s.end());
|
||||
}
|
||||
} // namespace utf8
|
||||
|
||||
#endif // header guard
|
||||
|
||||
Reference in New Issue
Block a user