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#include <textformatter.h>
#include <utils.h>
#include <strprintf.h>
#include <htmlrenderer.h>
#include <stflpp.h>
#include <assert.h>
#include <limits.h>
namespace newsbeuter {
textformatter::textformatter() { }
textformatter::~textformatter() { }
void textformatter::add_line(LineType type, std::string line) {
LOG(level::DEBUG,
"textformatter::add_line: `%s' (line type %i)",
line,
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 (auto line : lines) {
add_line(line.first,
utils::replace_all(line.second, "\t", " "));
}
}
std::vector<std::string> wrap_line(
const std::string& line,
const size_t width)
{
std::vector<std::string> result;
std::vector<std::string> words = utils::tokenize_spaced(line);
std::string curline = "";
for (auto word : words){
size_t word_length = utils::strwidth_stfl(word);
size_t curline_length = utils::strwidth_stfl(curline);
// For words wider than the available width we have no other choice but
// to force splits at width limit
while (word_length > width) {
size_t space_left = width - curline_length;
curline.append(word.substr(0, space_left));
word.erase(0, space_left);
result.push_back(curline);
curline = "";
word_length = utils::strwidth_stfl(word);
curline_length = utils::strwidth_stfl(curline);
}
if ((curline_length + word_length) > width) {
result.push_back(curline);
if (word == " ") {
curline = "";
} else {
curline = word;
}
} else {
curline.append(word);
}
}
if (curline.length() > 0) {
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)
{
LOG(level::DEBUG,
"textformatter::format_text_plain: rxman = %p, location = `%s', "
"wrap_width = %zu, total_width = %zu, %u lines",
rxman, location, wrap_width, total_width, 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 (auto line : lines) {
auto type = line.first;
auto text = line.second;
LOG(level::DEBUG,
"textformatter::format_text_plain: got line `%s' type %u",
text, type);
if (rxman && type != LineType::hr) {
rxman->quote_and_highlight(text, location);
}
switch(type) {
case LineType::wrappable:
if(text == "") {
store_line(" ");
continue;
}
text = utils::consolidate_whitespace(text);
for (auto line : wrap_line(text, wrap_width)) {
store_line(line);
}
break;
case LineType::softwrappable:
if(text == "") {
store_line(" ");
continue;
}
if (total_width == 0) {
store_line(text);
} else {
for (auto line : wrap_line(text, total_width)) {
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.append(1, '}');
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);
for (const auto& line : formatted) {
result += line + "\n";
}
return result;
}
}
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