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#include "buffer_manager.hh"
#include "assert.hh"
#include "buffer.hh"
#include "client_manager.hh"
#include "exception.hh"
#include "file.hh"
#include "string.hh"
namespace Kakoune
{
struct name_not_unique : logic_error {};
BufferManager::~BufferManager()
{
// delete remaining buffers
while (not m_buffers.empty())
delete m_buffers.front().get();
}
void BufferManager::register_buffer(Buffer& buffer)
{
StringView name = buffer.name();
for (auto& buf : m_buffers)
{
if (buf->name() == name)
throw name_not_unique();
}
m_buffers.emplace(m_buffers.begin(), &buffer);
}
void BufferManager::unregister_buffer(Buffer& buffer)
{
for (auto it = m_buffers.begin(); it != m_buffers.end(); ++it)
{
if (*it == &buffer)
{
m_buffers.erase(it);
return;
}
}
kak_assert(false);
}
void BufferManager::delete_buffer(Buffer& buffer)
{
for (auto it = m_buffers.begin(); it != m_buffers.end(); ++it)
{
if (*it == &buffer)
{
if (ClientManager::has_instance())
ClientManager::instance().ensure_no_client_uses_buffer(buffer);
delete it->get();
return;
}
}
kak_assert(false);
}
void BufferManager::delete_buffer_if_exists(StringView name)
{
if (Buffer* buf = get_buffer_ifp(name))
delete_buffer(*buf);
}
Buffer* BufferManager::get_buffer_ifp(StringView name)
{
for (auto& buf : m_buffers)
{
if (buf->name() == name or
(buf->flags() & Buffer::Flags::File and
real_path(buf->name()) == real_path(parse_filename(name))))
return buf.get();
}
return nullptr;
}
Buffer& BufferManager::get_buffer(StringView name)
{
Buffer* res = get_buffer_ifp(name);
if (not res)
throw runtime_error("no such buffer '"_str + name + "'");
return *res;
}
void BufferManager::set_last_used_buffer(Buffer& buffer)
{
auto it = m_buffers.begin();
while (*it != &buffer and it != m_buffers.end())
++it;
kak_assert(it != m_buffers.end());
m_buffers.erase(it);
m_buffers.emplace(m_buffers.begin(), &buffer);
}
CandidateList BufferManager::complete_buffer_name(StringView prefix,
ByteCount cursor_pos)
{
auto real_prefix = prefix.substr(0, cursor_pos);
const bool include_dirs = contains(real_prefix, '/');
CandidateList result;
CandidateList subsequence_result;
for (auto& buffer : m_buffers)
{
String name = buffer->display_name();
String match_name = name;
if (not include_dirs and buffer->flags() & Buffer::Flags::File)
{
ByteCount pos = name.find_last_of('/');
if (pos != (int)String::npos)
match_name = name.substr(pos);
}
if (prefix_match(match_name, real_prefix))
result.push_back(escape(name));
if (subsequence_match(match_name, real_prefix))
subsequence_result.push_back(escape(name));
}
return result.empty() ? subsequence_result : result;
}
}
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