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137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
/**
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* Copyright (c) 2022, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lnav_attr_line_builder_hh
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#define lnav_attr_line_builder_hh
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#include <utility>
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#include "attr_line.hh"
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class attr_line_builder {
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public:
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explicit attr_line_builder(attr_line_t& al) : alb_line(al) {}
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class attr_guard {
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public:
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explicit attr_guard(attr_line_t& al)
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: ag_line(al), ag_start(std::nullopt)
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{
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}
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attr_guard(attr_line_t& al, string_attr_pair sap)
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: ag_line(al), ag_start(al.get_string().length()),
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ag_attr(std::move(sap))
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{
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}
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attr_guard(const attr_guard&) = delete;
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attr_guard& operator=(const attr_guard&) = delete;
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attr_guard(attr_guard&& other) noexcept
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: ag_line(other.ag_line), ag_start(std::move(other.ag_start)),
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ag_attr(std::move(other.ag_attr))
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{
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other.ag_start = std::nullopt;
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}
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~attr_guard()
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{
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if (this->ag_start) {
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this->ag_line.al_attrs.emplace_back(
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line_range{
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this->ag_start.value(),
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(int) this->ag_line.get_string().length(),
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},
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this->ag_attr);
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}
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}
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private:
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attr_line_t& ag_line;
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std::optional<int> ag_start;
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string_attr_pair ag_attr;
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};
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attr_guard with_default() { return attr_guard{this->alb_line}; }
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attr_guard with_attr(string_attr_pair sap)
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{
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return {this->alb_line, std::move(sap)};
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}
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template<typename... Args>
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attr_line_builder& overlay_attr(Args... args)
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{
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this->alb_line.al_attrs.template emplace_back(args...);
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return *this;
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}
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template<typename... Args>
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attr_line_builder& overlay_attr_for_char(int index, Args... args)
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{
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this->alb_line.al_attrs.template emplace_back(
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line_range{index, index + 1}, args...);
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return *this;
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}
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template<typename... Args>
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attr_line_builder& append(Args... args)
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{
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this->alb_line.append(args...);
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return *this;
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}
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template<typename... Args>
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attr_line_builder& appendf(Args... args)
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{
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this->alb_line.appendf(args...);
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return *this;
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}
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attr_line_builder& indent(size_t amount)
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{
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auto pre = this->with_attr(SA_PREFORMATTED.value());
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this->append(amount, ' ');
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return *this;
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}
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attr_line_builder& append_as_hexdump(const string_fragment& sf);
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private:
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attr_line_t& alb_line;
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};
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#endif
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