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