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#include "textformatter.h"
#include <algorithm>
#include <cinttypes>
#include "htmlrenderer.h"
#include "logger.h"
#include "regexmanager.h"
#include "stflpp.h"
#include "stflrichtext.h"
#include "strprintf.h"
#include "utils.h"
namespace newsboat {
void TextFormatter::add_line(LineType type, std::string line)
{
LOG(Level::DEBUG,
"TextFormatter::add_line: `%s' (line type %u)",
line,
static_cast<unsigned int>(type));
auto clean_line = utils::wstr2str(
utils::clean_nonprintable_characters(utils::str2wstr(line)));
lines.push_back(std::make_pair(type, clean_line));
}
void TextFormatter::add_lines(
const std::vector<std::pair<LineType, std::string>>& lines)
{
for (const auto& line : lines) {
add_line(line.first,
utils::replace_all(line.second, "\t", " "));
}
}
bool iswhitespace(const std::string& input)
{
return std::all_of(input.cbegin(), input.cend(), [](std::string::value_type c) {
return std::isspace(c);
});
};
std::vector<std::string> wrap_line(const std::string& line, const size_t width,
bool raw)
{
if (line.empty()) {
return {""};
}
std::vector<std::string> result;
std::vector<std::string> words = utils::tokenize_spaced(line);
std::string prefix;
size_t prefix_width = 0;
auto strwidth = [raw](const std::string& str) {
if (raw) {
return utils::strwidth(str);
} else {
return utils::strwidth_stfl(str);
}
};
auto substr_with_width = [raw](const std::string& str, const size_t max_width) {
if (raw) {
return utils::substr_with_width(str, max_width);
} else {
return utils::substr_with_width_stfl(str, max_width);
}
};
if (iswhitespace(words[0])) {
prefix = substr_with_width(words[0], width);
prefix_width = strwidth(prefix);
words.erase(words.cbegin());
}
std::string curline = prefix;
for (auto& word : words) {
size_t word_width = strwidth(word);
size_t curline_width = strwidth(curline);
// for languages (e.g., CJK) don't use a space as a word
// boundary
while (word_width > (width - prefix_width)) {
size_t space_left = width - curline_width;
std::string part =
substr_with_width(word, space_left);
curline.append(part);
word.erase(0, part.length());
result.push_back(curline);
curline = prefix;
if (part.empty()) {
// discard the current word
word.clear();
}
word_width = strwidth(word);
curline_width = strwidth(curline);
}
if ((curline_width + word_width) > width) {
result.push_back(curline);
if (iswhitespace(word)) {
curline = prefix;
} else {
curline = prefix + word;
}
} else {
curline.append(word);
}
}
if (curline != prefix) {
result.push_back(curline);
}
return result;
}
std::vector<std::string> format_text_plain_helper(
const std::vector<std::pair<LineType, std::string>>& lines,
RegexManager* rxman,
const std::string& location,
// wrappable lines are wrapped at this width
const size_t wrap_width,
// if non-zero, softwrappable lines are wrapped at this width
const size_t total_width,
bool raw = false)
{
LOG(Level::DEBUG,
"TextFormatter::format_text_plain: rxman = %p, location = "
"`%s', "
"wrap_width = %" PRIu64 ", total_width = %" PRIu64 ", %" PRIu64
" lines",
rxman,
location,
static_cast<uint64_t>(wrap_width),
static_cast<uint64_t>(total_width),
static_cast<uint64_t>(lines.size()));
std::vector<std::string> format_cache;
auto store_line = [&format_cache](std::string line) {
format_cache.push_back(line);
LOG(Level::DEBUG,
"TextFormatter::format_text_plain: stored `%s'",
line);
};
for (const auto& line : lines) {
const auto type = line.first;
auto text = line.second;
LOG(Level::DEBUG,
"TextFormatter::format_text_plain: got line `%s' type "
"%u",
text,
static_cast<unsigned int>(type));
if (rxman && type != LineType::hr) {
// TODO: Propagate usage of StflRichText
auto x = StflRichText::from_quoted(text);
rxman->quote_and_highlight(x, location);
text = x.stfl_quoted();
}
switch (type) {
case LineType::wrappable:
if (text.empty() || iswhitespace(text)) {
store_line(" ");
continue;
}
text = utils::consolidate_whitespace(text);
for (const auto& line : wrap_line(text, wrap_width, raw)) {
store_line(line);
}
break;
case LineType::softwrappable:
if (text.empty() || iswhitespace(text)) {
store_line(" ");
continue;
}
if (total_width == 0) {
store_line(text);
} else {
for (const auto& line :
wrap_line(text, total_width, raw)) {
store_line(line);
}
}
break;
case LineType::nonwrappable:
store_line(text);
break;
case LineType::hr:
store_line(HtmlRenderer::render_hr(wrap_width));
break;
}
}
return format_cache;
}
std::pair<std::string, std::size_t> TextFormatter::format_text_to_list(
RegexManager* rxman,
const std::string& location,
const size_t wrap_width,
const size_t total_width)
{
auto formatted = format_text_plain_helper(
lines, rxman, location, wrap_width, total_width);
auto format_cache = std::string("{list");
for (auto& line : formatted) {
if (line != "") {
utils::trim_end(line);
format_cache.append(strprintf::fmt(
"{listitem text:%s}", Stfl::quote(line)));
}
}
format_cache.push_back('}');
auto line_count = formatted.size();
return {format_cache, line_count};
}
std::string TextFormatter::format_text_plain(const size_t width,
const size_t total_width)
{
std::string result;
auto formatted = format_text_plain_helper(
lines, nullptr, "", width, total_width, true);
for (const auto& line : formatted) {
result += line + "\n";
}
return result;
}
} // namespace newsboat
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