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717 lines
21 KiB
C++
717 lines
21 KiB
C++
/**
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* Copyright (c) 2020, 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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#include <algorithm>
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#include "attr_line.hh"
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#include <stdarg.h>
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#include "ansi_scrubber.hh"
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#include "auto_mem.hh"
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#include "config.h"
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#include "lnav_log.hh"
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#include "pcrepp/pcre2pp.hh"
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attr_line_t&
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attr_line_t::with_ansi_string(const char* str, ...)
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{
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auto_mem<char> formatted_str;
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va_list args;
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va_start(args, str);
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auto ret = vasprintf(formatted_str.out(), str, args);
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va_end(args);
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if (ret >= 0 && formatted_str != nullptr) {
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this->al_string = formatted_str;
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scrub_ansi_string(this->al_string, &this->al_attrs);
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}
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return *this;
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}
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attr_line_t&
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attr_line_t::with_ansi_string(const std::string& str)
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{
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this->al_string = str;
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scrub_ansi_string(this->al_string, &this->al_attrs);
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return *this;
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}
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namespace text_stream {
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struct word {
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string_fragment w_word;
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string_fragment w_remaining;
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};
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struct space {
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string_fragment s_value;
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string_fragment s_remaining;
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};
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struct corrupt {
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string_fragment c_value;
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string_fragment c_remaining;
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};
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struct eof {
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string_fragment e_remaining;
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};
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using chunk = mapbox::util::variant<word, space, corrupt, eof>;
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chunk
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consume(const string_fragment text)
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{
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static const auto WORD_RE
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= lnav::pcre2pp::code::from_const(R"((*UTF)^[^\p{Z}\p{So}\p{C}]+)");
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static const auto SPACE_RE
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= lnav::pcre2pp::code::from_const(R"((*UTF)^\s)");
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if (text.empty()) {
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return eof{text};
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}
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auto word_find_res
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= WORD_RE.find_in(text, PCRE2_NO_UTF_CHECK).ignore_error();
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if (word_find_res) {
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auto split_res = text.split_n(word_find_res->f_all.length()).value();
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return word{split_res.first, split_res.second};
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}
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if (isspace(text.front())) {
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auto split_res = text.split_n(1).value();
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return space{split_res.first, split_res.second};
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}
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auto space_find_res
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= SPACE_RE.find_in(text, PCRE2_NO_UTF_CHECK).ignore_error();
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if (space_find_res) {
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auto split_res = text.split_n(space_find_res->f_all.length()).value();
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return space{split_res.first, split_res.second};
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}
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auto csize_res = ww898::utf::utf8::char_size(
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[&text]() { return std::make_pair(text.front(), text.length()); });
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if (csize_res.isErr()) {
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auto split_res = text.split_n(1);
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return corrupt{split_res->first, split_res->second};
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}
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auto split_res = text.split_n(csize_res.unwrap());
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return word{split_res->first, split_res->second};
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}
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} // namespace text_stream
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static void
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split_attrs(attr_line_t& al, const line_range& lr)
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{
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if (lr.empty()) {
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return;
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}
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string_attrs_t new_attrs;
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for (auto& attr : al.al_attrs) {
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if (!lr.intersects(attr.sa_range)) {
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continue;
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}
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new_attrs.emplace_back(line_range{lr.lr_end, attr.sa_range.lr_end},
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std::make_pair(attr.sa_type, attr.sa_value));
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attr.sa_range.lr_end = lr.lr_start;
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}
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for (auto& new_attr : new_attrs) {
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al.al_attrs.emplace_back(std::move(new_attr));
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}
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}
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attr_line_t&
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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)
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{
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if (index < this->al_string.length()) {
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shift_string_attrs(this->al_attrs, index, al.al_string.length());
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}
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this->al_string.insert(index, al.al_string);
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for (const auto& sa : al.al_attrs) {
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this->al_attrs.emplace_back(sa);
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line_range& lr = this->al_attrs.back().sa_range;
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lr.shift(0, index);
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if (lr.lr_end == -1) {
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lr.lr_end = index + al.al_string.length();
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}
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}
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if (tws == nullptr) {
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return *this;
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}
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auto starting_line_index = this->al_string.rfind('\n', index);
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if (starting_line_index == std::string::npos) {
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starting_line_index = 0;
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} else {
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starting_line_index += 1;
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}
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const ssize_t usable_width = tws->tws_width - tws->tws_indent;
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auto text_to_wrap = string_fragment::from_str_range(
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this->al_string, starting_line_index, this->al_string.length());
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string_fragment last_word;
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ssize_t line_ch_count = 0;
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ssize_t line_indent_count = 0;
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auto needs_indent = false;
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auto last_was_pre = false;
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while (!text_to_wrap.empty()) {
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if (needs_indent) {
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this->insert(text_to_wrap.sf_begin,
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tws->tws_indent + tws->tws_padding_indent,
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' ');
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auto indent_lr = line_range{
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text_to_wrap.sf_begin,
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text_to_wrap.sf_begin + tws->tws_indent,
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};
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split_attrs(*this, indent_lr);
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indent_lr.lr_end += tws->tws_padding_indent;
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line_ch_count += tws->tws_padding_indent;
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line_indent_count += tws->tws_padding_indent;
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if (!indent_lr.empty()) {
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this->al_attrs.emplace_back(indent_lr, SA_PREFORMATTED.value());
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}
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text_to_wrap = text_to_wrap.prepend(
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this->al_string.data(),
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tws->tws_indent + tws->tws_padding_indent);
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needs_indent = false;
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}
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text_stream::chunk next_chunk(mapbox::util::no_init{});
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auto pre_iter = find_string_attr_containing(
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this->al_attrs, &SA_PREFORMATTED, text_to_wrap.sf_begin);
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if (pre_iter != this->al_attrs.end()) {
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auto pre_len = pre_iter->sa_range.lr_end - text_to_wrap.sf_begin;
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auto pre_lf = text_to_wrap.find('\n');
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if (pre_lf && pre_lf.value() < pre_len) {
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pre_len = pre_lf.value() + 1;
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}
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auto pre_pair = text_to_wrap.split_n(pre_len);
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next_chunk = text_stream::word{
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pre_pair->first,
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pre_pair->second,
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};
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}
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if (!next_chunk.valid()) {
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next_chunk = text_stream::consume(text_to_wrap);
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}
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text_to_wrap = next_chunk.match(
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[&](text_stream::word word) {
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auto ch_count
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= word.w_word.utf8_length().unwrapOr(word.w_word.length());
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if (line_ch_count > line_indent_count && !last_was_pre
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&& (line_ch_count + ch_count) > usable_width)
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{
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this->insert(word.w_word.sf_begin, 1, '\n');
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this->insert(word.w_word.sf_begin + 1,
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tws->tws_indent + tws->tws_padding_indent,
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' ');
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auto indent_lr = line_range{
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word.w_word.sf_begin + 1,
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word.w_word.sf_begin + 1 + tws->tws_indent,
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};
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split_attrs(*this, indent_lr);
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indent_lr.lr_end += tws->tws_padding_indent;
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if (!indent_lr.empty()) {
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this->al_attrs.emplace_back(indent_lr,
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SA_PREFORMATTED.value());
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}
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line_ch_count = tws->tws_padding_indent + ch_count;
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line_indent_count = tws->tws_padding_indent;
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auto trailing_space_count = 0;
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if (!last_word.empty()) {
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trailing_space_count
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= word.w_word.sf_begin - last_word.sf_begin;
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this->erase(last_word.sf_begin, trailing_space_count);
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}
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return word.w_remaining
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.erase_before(this->al_string.data(),
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trailing_space_count)
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.prepend(this->al_string.data(),
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1 + tws->tws_indent + tws->tws_padding_indent);
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}
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line_ch_count += ch_count;
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if (word.w_word.endswith("\n")) {
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line_ch_count = 0;
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line_indent_count = 0;
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needs_indent = true;
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}
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return word.w_remaining;
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},
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[&](text_stream::space space) {
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if (space.s_value == "\n") {
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line_ch_count = 0;
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line_indent_count = 0;
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needs_indent = true;
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return space.s_remaining;
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}
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if (line_ch_count > 0) {
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auto ch_count = space.s_value.utf8_length().unwrapOr(
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space.s_value.length());
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if ((line_ch_count + ch_count) > usable_width
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&& find_string_attr_containing(this->al_attrs,
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&SA_PREFORMATTED,
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text_to_wrap.sf_begin)
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== this->al_attrs.end())
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{
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this->erase(space.s_value.sf_begin,
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space.s_value.length());
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this->insert(space.s_value.sf_begin, "\n");
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line_ch_count = 0;
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line_indent_count = 0;
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needs_indent = true;
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auto trailing_space_count = 0;
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if (!last_word.empty()) {
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trailing_space_count
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= space.s_value.sf_begin - last_word.sf_begin;
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this->erase(last_word.sf_end, trailing_space_count);
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}
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return space.s_remaining
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.erase_before(
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this->al_string.data(),
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space.s_value.length() + trailing_space_count)
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.prepend(this->al_string.data(), 1);
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}
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line_ch_count += ch_count;
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} else if (find_string_attr_containing(this->al_attrs,
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&SA_PREFORMATTED,
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text_to_wrap.sf_begin)
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== this->al_attrs.end())
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{
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this->erase(space.s_value.sf_begin, space.s_value.length());
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return space.s_remaining.erase_before(
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this->al_string.data(), space.s_value.length());
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}
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return space.s_remaining;
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},
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[](text_stream::corrupt corrupt) { return corrupt.c_remaining; },
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[](text_stream::eof eof) { return eof.e_remaining; });
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if (next_chunk.is<text_stream::word>()) {
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last_word = text_to_wrap;
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}
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last_was_pre = (pre_iter != this->al_attrs.end());
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ensure(this->al_string.data() == text_to_wrap.sf_string);
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ensure(text_to_wrap.sf_begin <= text_to_wrap.sf_end);
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}
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return *this;
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}
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attr_line_t
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attr_line_t::subline(size_t start, size_t len) const
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{
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if (len == std::string::npos) {
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len = this->al_string.length() - start;
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}
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line_range lr{(int) start, (int) (start + len)};
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attr_line_t retval;
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retval.al_string = this->al_string.substr(start, len);
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for (const auto& sa : this->al_attrs) {
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if (!lr.intersects(sa.sa_range)) {
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continue;
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}
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auto ilr = lr.intersection(sa.sa_range).shift(0, -lr.lr_start);
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retval.al_attrs.emplace_back(ilr,
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std::make_pair(sa.sa_type, sa.sa_value));
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const auto& last_lr = retval.al_attrs.back().sa_range;
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ensure(last_lr.lr_end <= (int) retval.al_string.length());
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}
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return retval;
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}
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void
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attr_line_t::split_lines(std::vector<attr_line_t>& lines) const
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{
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size_t pos = 0, next_line;
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while ((next_line = this->al_string.find('\n', pos)) != std::string::npos) {
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lines.emplace_back(this->subline(pos, next_line - pos));
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pos = next_line + 1;
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}
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lines.emplace_back(this->subline(pos));
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}
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attr_line_t&
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attr_line_t::right_justify(unsigned long width)
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{
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long padding = width - this->length();
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if (padding > 0) {
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this->al_string.insert(0, padding, ' ');
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for (auto& al_attr : this->al_attrs) {
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if (al_attr.sa_range.lr_start > 0) {
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al_attr.sa_range.lr_start += padding;
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}
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if (al_attr.sa_range.lr_end != -1) {
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al_attr.sa_range.lr_end += padding;
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}
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}
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}
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return *this;
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}
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size_t
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attr_line_t::nearest_text(size_t x) const
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{
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if (x > 0 && x >= (size_t) this->length()) {
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if (this->empty()) {
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x = 0;
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} else {
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x = this->length() - 1;
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}
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}
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while (x > 0 && isspace(this->al_string[x])) {
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x -= 1;
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}
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return x;
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}
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void
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attr_line_t::apply_hide()
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{
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auto& sa = this->al_attrs;
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for (auto& sattr : sa) {
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if (sattr.sa_type == &SA_HIDDEN && sattr.sa_range.length() > 3) {
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auto& lr = sattr.sa_range;
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std::for_each(sa.begin(), sa.end(), [&](string_attr& attr) {
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if (attr.sa_type == &VC_STYLE && lr.contains(attr.sa_range)) {
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attr.sa_type = &SA_REMOVED;
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}
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});
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this->al_string.replace(lr.lr_start, lr.length(), "\xE2\x8B\xAE");
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shift_string_attrs(sa, lr.lr_start + 1, -(lr.length() - 3));
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sattr.sa_type = &VC_ROLE;
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sattr.sa_value = role_t::VCR_HIDDEN;
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lr.lr_end = lr.lr_start + 3;
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}
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}
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}
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attr_line_t&
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attr_line_t::rtrim(nonstd::optional<const char*> chars)
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{
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auto index = this->al_string.length();
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for (; index > 0; index--) {
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if (find_string_attr_containing(
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this->al_attrs, &SA_PREFORMATTED, index - 1)
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!= this->al_attrs.end())
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{
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break;
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}
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if (chars
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&& strchr(chars.value(), this->al_string[index - 1]) == nullptr)
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{
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break;
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}
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if (!chars && !isspace(this->al_string[index - 1])) {
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break;
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}
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}
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if (index > 0 && index < this->al_string.length()) {
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this->erase(index);
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}
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return *this;
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}
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attr_line_t&
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attr_line_t::erase(size_t pos, size_t len)
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{
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if (len == std::string::npos) {
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len = this->al_string.size() - pos;
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}
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if (len == 0) {
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return *this;
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}
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this->al_string.erase(pos, len);
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shift_string_attrs(this->al_attrs,
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line_range{(int) pos, (int) (pos + len)},
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-((int32_t) len));
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auto new_end = std::remove_if(
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this->al_attrs.begin(), this->al_attrs.end(), [](const auto& attr) {
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return attr.sa_range.empty();
|
|
});
|
|
this->al_attrs.erase(new_end, this->al_attrs.end());
|
|
|
|
return *this;
|
|
}
|
|
|
|
attr_line_t&
|
|
attr_line_t::pad_to(ssize_t size)
|
|
{
|
|
const auto curr_len = this->utf8_length_or_length();
|
|
|
|
if (curr_len < size) {
|
|
this->append((size - curr_len), ' ');
|
|
for (auto& attr : this->al_attrs) {
|
|
if (attr.sa_range.lr_start == 0 && attr.sa_range.lr_end == curr_len)
|
|
{
|
|
attr.sa_range.lr_end = this->al_string.length();
|
|
}
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
line_range
|
|
line_range::intersection(const line_range& other) const
|
|
{
|
|
int actual_end;
|
|
|
|
if (this->lr_end == -1) {
|
|
actual_end = other.lr_end;
|
|
} else if (other.lr_end == -1) {
|
|
actual_end = this->lr_end;
|
|
} else {
|
|
actual_end = std::min(this->lr_end, other.lr_end);
|
|
}
|
|
return line_range{std::max(this->lr_start, other.lr_start), actual_end};
|
|
}
|
|
|
|
line_range&
|
|
line_range::shift_range(const line_range& cover, int32_t amount)
|
|
{
|
|
if (cover.lr_end <= this->lr_start) {
|
|
this->lr_start = std::max(0, this->lr_start + amount);
|
|
if (this->lr_end != -1) {
|
|
this->lr_end = std::max(0, this->lr_end + amount);
|
|
}
|
|
} else {
|
|
if (amount < 0 && cover.contains(*this)) {
|
|
this->lr_start = cover.lr_start;
|
|
}
|
|
if (this->lr_end != -1) {
|
|
if (cover.lr_start < this->lr_end) {
|
|
if (amount < 0 && amount < (cover.lr_start - this->lr_end)) {
|
|
this->lr_end = cover.lr_start;
|
|
} else {
|
|
this->lr_end
|
|
= std::max(this->lr_start, this->lr_end + amount);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
line_range&
|
|
line_range::shift(int32_t start, int32_t amount)
|
|
{
|
|
if (start == this->lr_start) {
|
|
if (amount > 0) {
|
|
this->lr_start += amount;
|
|
}
|
|
if (this->lr_end != -1) {
|
|
this->lr_end += amount;
|
|
if (this->lr_end < this->lr_start) {
|
|
this->lr_end = this->lr_start;
|
|
}
|
|
}
|
|
} else if (start < this->lr_start) {
|
|
this->lr_start = std::max(0, this->lr_start + amount);
|
|
if (this->lr_end != -1) {
|
|
this->lr_end = std::max(0, this->lr_end + amount);
|
|
}
|
|
} else if (this->lr_end != -1) {
|
|
if (start < this->lr_end) {
|
|
if (amount < 0 && amount < (start - this->lr_end)) {
|
|
this->lr_end = start;
|
|
} else {
|
|
this->lr_end = std::max(this->lr_start, this->lr_end + amount);
|
|
}
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
string_attrs_t::const_iterator
|
|
find_string_attr(const string_attrs_t& sa, size_t near)
|
|
{
|
|
auto nearest = sa.end();
|
|
ssize_t last_diff = INT_MAX;
|
|
|
|
for (auto iter = sa.begin(); iter != sa.end(); ++iter) {
|
|
const auto& lr = iter->sa_range;
|
|
|
|
if (!lr.is_valid() || !lr.contains(near)) {
|
|
continue;
|
|
}
|
|
|
|
ssize_t diff = near - lr.lr_start;
|
|
if (diff < last_diff) {
|
|
last_diff = diff;
|
|
nearest = iter;
|
|
}
|
|
}
|
|
|
|
return nearest;
|
|
}
|
|
|
|
void
|
|
shift_string_attrs(string_attrs_t& sa, int32_t start, int32_t amount)
|
|
{
|
|
for (auto& iter : sa) {
|
|
iter.sa_range.shift(start, amount);
|
|
}
|
|
}
|
|
|
|
void
|
|
shift_string_attrs(string_attrs_t& sa, const line_range& cover, int32_t amount)
|
|
{
|
|
for (auto& iter : sa) {
|
|
iter.sa_range.shift_range(cover, amount);
|
|
}
|
|
}
|
|
|
|
struct line_range
|
|
find_string_attr_range(const string_attrs_t& sa, string_attr_type_base* type)
|
|
{
|
|
auto iter = find_string_attr(sa, type);
|
|
|
|
if (iter != sa.end()) {
|
|
return iter->sa_range;
|
|
}
|
|
|
|
return line_range();
|
|
}
|
|
|
|
void
|
|
remove_string_attr(string_attrs_t& sa, const line_range& lr)
|
|
{
|
|
string_attrs_t::iterator iter;
|
|
|
|
while ((iter = find_string_attr(sa, lr)) != sa.end()) {
|
|
sa.erase(iter);
|
|
}
|
|
}
|
|
|
|
void
|
|
remove_string_attr(string_attrs_t& sa, string_attr_type_base* type)
|
|
{
|
|
for (auto iter = sa.begin(); iter != sa.end();) {
|
|
if (iter->sa_type == type) {
|
|
iter = sa.erase(iter);
|
|
} else {
|
|
++iter;
|
|
}
|
|
}
|
|
}
|
|
|
|
string_attrs_t::iterator
|
|
find_string_attr(string_attrs_t& sa, const line_range& lr)
|
|
{
|
|
string_attrs_t::iterator iter;
|
|
|
|
for (iter = sa.begin(); iter != sa.end(); ++iter) {
|
|
if (lr.contains(iter->sa_range)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return iter;
|
|
}
|
|
|
|
string_attrs_t::const_iterator
|
|
find_string_attr(const string_attrs_t& sa,
|
|
const string_attr_type_base* type,
|
|
int start)
|
|
{
|
|
string_attrs_t::const_iterator iter;
|
|
|
|
for (iter = sa.begin(); iter != sa.end(); ++iter) {
|
|
if (iter->sa_type == type && iter->sa_range.lr_start >= start) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return iter;
|
|
}
|
|
|
|
nonstd::optional<const string_attr*>
|
|
get_string_attr(const string_attrs_t& sa,
|
|
const string_attr_type_base* type,
|
|
int start)
|
|
{
|
|
auto iter = find_string_attr(sa, type, start);
|
|
|
|
if (iter == sa.end()) {
|
|
return nonstd::nullopt;
|
|
}
|
|
|
|
return nonstd::make_optional(&(*iter));
|
|
}
|