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#include "Document.h"
#include "FileReader.h"
OwnPtr<Document> Document::create_from_file(const std::string& path)
{
auto document = make<Document>(path);
FileReader reader(path);
while (reader.can_read()) {
auto line = reader.read_line();
document->m_lines.push_back(make<Line>(line));
}
return document;
}
void Document::dump()
{
fprintf(stderr, "Document{%p}\n", this);
for (size_t i = 0; i < line_count(); ++i) {
fprintf(stderr, "[%02zu] %s\n", i, line(i).data().c_str());
}
}
bool Document::backspace_at(Position)
{
return false;
}
bool Document::erase_at(Position position, int count)
{
ASSERT(position.is_valid());
ASSERT(position.line() < line_count());
if (count == 0)
return false;
line(position.line()).erase(position.column(), count);
return true;
}
bool Document::newline_at(Position position)
{
ASSERT(position.is_valid());
ASSERT(position.line() < line_count());
auto& line = this->line(position.line());
if (position.column() > line.length())
return false;
if (position.column() == line.length()) {
m_lines.insert(m_lines.begin() + position.line() + 1, make<Line>(""));
return true;
}
auto chop = line.truncate(position.column());
m_lines.insert(m_lines.begin() + position.line() + 1, make<Line>(chop));
return true;
}
bool Document::insert_at(Position position, const std::string& text)
{
static FILE* f = fopen("log", "a");
fprintf(f, "@%zu,%zu: +%s\n", position.line(), position.column(), text.c_str());
fflush(f);
ASSERT(position.is_valid());
if (!position.is_valid())
return false;
ASSERT(position.line() < line_count());
if (position.line() >= line_count())
return false;
auto& line = this->line(position.line());
if (position.column() > line.length())
return false;
line.insert(position.column(), text);
return true;
}
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