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579 lines
15 KiB
C++
579 lines
15 KiB
C++
/**
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* Copyright (c) 2017, 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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* @file attr_line.hh
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*/
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#ifndef attr_line_hh
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#define attr_line_hh
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#include <new>
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#include <string>
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#include <vector>
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#include <limits.h>
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#include "fmt/format.h"
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#include "intern_string.hh"
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#include "line_range.hh"
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#include "string_attr_type.hh"
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#include "string_util.hh"
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inline line_range
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to_line_range(const string_fragment& frag)
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{
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return line_range{frag.sf_begin, frag.sf_end};
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}
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struct string_attr {
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string_attr(const struct line_range& lr, const string_attr_pair& value)
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: sa_range(lr), sa_type(value.first), sa_value(value.second)
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{
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}
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string_attr() = default;
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bool operator<(const struct string_attr& rhs) const
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{
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if (this->sa_range < rhs.sa_range) {
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return true;
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}
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if (this->sa_range == rhs.sa_range && this->sa_type == rhs.sa_type
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&& this->sa_type == &VC_ROLE
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&& this->sa_value.get<role_t>() < rhs.sa_value.get<role_t>())
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{
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return true;
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}
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return false;
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}
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struct line_range sa_range;
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const string_attr_type_base* sa_type{nullptr};
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string_attr_value sa_value;
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};
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template<typename T>
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struct string_attr_wrapper {
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explicit string_attr_wrapper(const string_attr* sa) : saw_string_attr(sa) {}
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template<typename U = T>
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std::enable_if_t<!std::is_void<U>::value, const U&> get() const
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{
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return this->saw_string_attr->sa_value.template get<T>();
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}
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const string_attr* saw_string_attr;
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};
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/** A map of line ranges to attributes for that range. */
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using string_attrs_t = std::vector<string_attr>;
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string_attrs_t::const_iterator find_string_attr(
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const string_attrs_t& sa, const string_attr_type_base* type, int start = 0);
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nonstd::optional<const string_attr*> get_string_attr(
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const string_attrs_t& sa, const string_attr_type_base* type, int start = 0);
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template<typename T>
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inline nonstd::optional<string_attr_wrapper<T>>
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get_string_attr(const string_attrs_t& sa,
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const string_attr_type<T>& type,
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int start = 0)
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{
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auto iter = find_string_attr(sa, &type, start);
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if (iter == sa.end()) {
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return nonstd::nullopt;
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}
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return nonstd::make_optional(string_attr_wrapper<T>(&(*iter)));
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}
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template<typename T>
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inline string_attrs_t::const_iterator
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find_string_attr_containing(const string_attrs_t& sa,
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const string_attr_type_base* type,
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T x)
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{
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string_attrs_t::const_iterator iter;
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for (iter = sa.begin(); iter != sa.end(); ++iter) {
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if (iter->sa_type == type && iter->sa_range.contains(x)) {
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break;
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}
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}
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return iter;
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}
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string_attrs_t::iterator find_string_attr(string_attrs_t& sa,
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const struct line_range& lr);
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string_attrs_t::const_iterator find_string_attr(const string_attrs_t& sa,
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size_t near);
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template<typename T>
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inline string_attrs_t::const_iterator
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rfind_string_attr_if(const string_attrs_t& sa, ssize_t near, T predicate)
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{
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auto nearest = sa.end();
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ssize_t last_diff = INT_MAX;
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for (auto iter = sa.begin(); iter != sa.end(); ++iter) {
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const auto& lr = iter->sa_range;
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if (lr.lr_start > near) {
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continue;
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}
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if (!predicate(*iter)) {
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continue;
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}
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ssize_t diff = near - lr.lr_start;
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if (diff < last_diff) {
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last_diff = diff;
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nearest = iter;
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}
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}
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return nearest;
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}
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struct line_range find_string_attr_range(const string_attrs_t& sa,
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string_attr_type_base* type);
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void remove_string_attr(string_attrs_t& sa, const struct line_range& lr);
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void remove_string_attr(string_attrs_t& sa, string_attr_type_base* type);
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void shift_string_attrs(string_attrs_t& sa, int32_t start, int32_t amount);
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void shift_string_attrs(string_attrs_t& sa,
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const line_range& cover,
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int32_t amount);
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struct text_wrap_settings {
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text_wrap_settings& with_indent(int indent)
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{
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this->tws_indent = indent;
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return *this;
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}
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text_wrap_settings& with_padding_indent(int indent)
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{
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this->tws_padding_indent = indent;
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return *this;
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}
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text_wrap_settings& with_width(int width)
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{
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this->tws_width = width;
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return *this;
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}
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int tws_indent{2};
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int tws_width{80};
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int tws_padding_indent{0};
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};
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/**
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* A line that has attributes.
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*/
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class attr_line_t {
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public:
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attr_line_t() = default;
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attr_line_t(std::string str) : al_string(std::move(str)) {}
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attr_line_t(const char* str) : al_string(str) {}
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static inline attr_line_t from_ansi_str(const char* str)
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{
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attr_line_t retval;
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return retval.with_ansi_string("%s", str);
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}
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/** @return The string itself. */
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std::string& get_string() { return this->al_string; }
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const std::string& get_string() const { return this->al_string; }
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/** @return The attributes for the string. */
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string_attrs_t& get_attrs() { return this->al_attrs; }
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const string_attrs_t& get_attrs() const { return this->al_attrs; }
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attr_line_t& with_string(const std::string& str)
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{
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this->al_string = str;
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return *this;
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}
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attr_line_t& with_ansi_string(const char* str, ...);
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attr_line_t& with_ansi_string(const std::string& str);
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attr_line_t& with_attr(const string_attr& sa)
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{
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this->al_attrs.push_back(sa);
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return *this;
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}
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attr_line_t& ensure_space()
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{
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if (!this->al_string.empty() && this->al_string.back() != ' '
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&& this->al_string.back() != '[')
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{
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this->append(1, ' ');
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}
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return *this;
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}
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template<typename S>
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attr_line_t& append(S str, const string_attr_pair& value)
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{
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size_t start_len = this->al_string.length();
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this->al_string.append(str);
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line_range lr{(int) start_len, (int) this->al_string.length()};
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this->al_attrs.emplace_back(lr, value);
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return *this;
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}
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template<typename S>
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attr_line_t& append(const std::pair<S, string_attr_pair>& value)
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{
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size_t start_len = this->al_string.length();
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this->al_string.append(std::move(value.first));
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line_range lr{(int) start_len, (int) this->al_string.length()};
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this->al_attrs.emplace_back(lr, value.second);
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return *this;
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}
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template<typename S>
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attr_line_t& append_quoted(const std::pair<S, string_attr_pair>& value)
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{
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this->al_string.append("\u201c");
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size_t start_len = this->al_string.length();
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this->al_string.append(std::move(value.first));
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line_range lr{(int) start_len, (int) this->al_string.length()};
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this->al_attrs.emplace_back(lr, value.second);
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this->al_string.append("\u201d");
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return *this;
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}
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attr_line_t& append_quoted(const intern_string_t str)
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{
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this->al_string.append("\u201c");
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this->al_string.append(str.get(), str.size());
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this->al_string.append("\u201d");
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return *this;
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}
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attr_line_t& append_quoted(const attr_line_t& al)
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{
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this->al_string.append("\u201c");
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this->append(al);
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this->al_string.append("\u201d");
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return *this;
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}
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template<typename S>
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attr_line_t& append_quoted(S s)
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{
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this->al_string.append("\u201c");
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this->append(std::move(s));
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this->al_string.append("\u201d");
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return *this;
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}
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attr_line_t& append(const intern_string_t str)
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{
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this->al_string.append(str.get(), str.size());
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return *this;
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}
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attr_line_t& append(const string_fragment& str)
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{
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this->al_string.append(str.data(), str.length());
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return *this;
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}
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template<typename S>
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attr_line_t& append(S str)
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{
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this->al_string.append(str);
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return *this;
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}
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template<typename... Args>
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attr_line_t& appendf(fmt::format_string<Args...> fstr, Args&&... args)
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{
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fmt::vformat_to(std::back_inserter(this->al_string),
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fstr,
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fmt::make_format_args(args...));
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return *this;
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}
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attr_line_t& with_attr_for_all(const string_attr_pair& sap)
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{
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this->al_attrs.emplace_back(line_range{0, -1}, sap);
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return *this;
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}
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template<typename C, typename F>
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attr_line_t& join(const C& container,
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const string_attr_pair& sap,
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const F& fill)
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{
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bool init = true;
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for (const auto& elem : container) {
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if (!init) {
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this->append(fill);
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}
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this->append(std::make_pair(elem, sap));
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init = false;
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}
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return *this;
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}
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template<typename C, typename F>
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attr_line_t& join(const C& container, const F& fill)
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{
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bool init = true;
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for (const auto& elem : container) {
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if (!init) {
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this->append(fill);
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}
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this->append(elem);
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init = false;
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}
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return *this;
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}
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attr_line_t& insert(size_t index,
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const attr_line_t& al,
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text_wrap_settings* tws = nullptr);
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attr_line_t& append(const attr_line_t& al,
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text_wrap_settings* tws = nullptr)
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{
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return this->insert(this->al_string.length(), al, tws);
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}
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attr_line_t& append(size_t len, char c)
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{
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this->al_string.append(len, c);
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return *this;
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}
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attr_line_t& insert(size_t index, size_t len, char c)
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{
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this->al_string.insert(index, len, c);
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shift_string_attrs(this->al_attrs, index, len);
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return *this;
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}
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attr_line_t& insert(size_t index, const char* str)
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{
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this->al_string.insert(index, str);
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shift_string_attrs(this->al_attrs, index, strlen(str));
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return *this;
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}
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template<typename S>
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attr_line_t& insert(size_t index,
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const std::pair<S, string_attr_pair>& value)
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{
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size_t start_len = this->al_string.length();
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this->insert(index, std::move(value.first));
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line_range lr{
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(int) index,
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(int) (index + (this->al_string.length() - start_len)),
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};
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this->al_attrs.emplace_back(lr, value.second);
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return *this;
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}
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template<typename... Args>
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attr_line_t& add_header(Args... args)
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{
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if (!this->blank()) {
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this->insert(0, args...);
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}
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return *this;
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}
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template<typename... Args>
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attr_line_t& with_default(Args... args)
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{
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if (this->blank()) {
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this->clear();
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this->append(args...);
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}
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return *this;
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}
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attr_line_t& erase(size_t pos, size_t len = std::string::npos);
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attr_line_t& rtrim(nonstd::optional<const char*> chars = nonstd::nullopt);
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attr_line_t& erase_utf8_chars(size_t start)
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{
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auto byte_index = utf8_char_to_byte_index(this->al_string, start);
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this->erase(byte_index);
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return *this;
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}
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attr_line_t& right_justify(unsigned long width);
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attr_line_t& pad_to(ssize_t size);
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ssize_t length() const
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{
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size_t retval = this->al_string.length();
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for (const auto& al_attr : this->al_attrs) {
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retval = std::max(retval, (size_t) al_attr.sa_range.lr_start);
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if (al_attr.sa_range.lr_end != -1) {
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retval = std::max(retval, (size_t) al_attr.sa_range.lr_end);
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}
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}
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return retval;
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}
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Result<size_t, const char*> utf8_length() const
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{
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return utf8_string_length(this->al_string);
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}
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ssize_t utf8_length_or_length() const
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{
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return utf8_string_length(this->al_string).unwrapOr(this->length());
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}
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size_t column_width() const
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{
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return string_fragment::from_str(this->al_string).column_width();
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}
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std::string get_substring(const line_range& lr) const
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{
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if (!lr.is_valid()) {
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return "";
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}
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return this->al_string.substr(lr.lr_start, lr.sublen(this->al_string));
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}
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string_fragment to_string_fragment(
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string_attrs_t::const_iterator iter) const
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{
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return string_fragment(this->al_string.c_str(),
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iter->sa_range.lr_start,
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iter->sa_range.end_for_string(this->al_string));
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}
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string_attrs_t::const_iterator find_attr(size_t near) const
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{
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near = std::min(near, this->al_string.length() - 1);
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while (near > 0 && isspace(this->al_string[near])) {
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near -= 1;
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}
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return find_string_attr(this->al_attrs, near);
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}
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bool empty() const { return this->length() == 0; }
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bool blank() const { return is_blank(this->al_string); }
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/** Clear the string and the attributes for the string. */
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attr_line_t& clear()
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{
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this->al_string.clear();
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this->al_attrs.clear();
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return *this;
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}
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attr_line_t subline(size_t start, size_t len = std::string::npos) const;
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void split_lines(std::vector<attr_line_t>& lines) const;
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std::vector<attr_line_t> split_lines() const
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{
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std::vector<attr_line_t> retval;
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this->split_lines(retval);
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return retval;
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}
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size_t nearest_text(size_t x) const;
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void apply_hide();
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std::string al_string;
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string_attrs_t al_attrs;
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};
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#endif
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