e4a23a64fa
The real technical limit is with lines bigger than 2 GiB and buffers with more than 2 Gi lines, refactor buffer loading to make it possible to load those files. Fix an overflow with the hash_data function at the same time
134 lines
3.9 KiB
C++
134 lines
3.9 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 "ranges.hh"
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#include "string.hh"
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namespace Kakoune
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{
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BufferManager::~BufferManager()
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{
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// Move buffers to avoid running BufClose with buffers remaining in that list
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BufferList buffers = std::move(m_buffers);
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for (auto& buffer : buffers)
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buffer->on_unregistered();
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// Make sure not clients exists
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if (ClientManager::has_instance())
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ClientManager::instance().clear(true);
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}
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Buffer* BufferManager::create_buffer(String name, Buffer::Flags flags, BufferLines lines, ByteOrderMark bom, EolFormat eolformat, FsStatus fs_status)
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{
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auto path = real_path(parse_filename(name));
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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 buf->name() == path))
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throw runtime_error{"buffer name is already in use"};
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}
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m_buffers.push_back(std::make_unique<Buffer>(std::move(name), flags, lines, bom, eolformat, fs_status));
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auto* buffer = m_buffers.back().get();
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buffer->on_registered();
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if (contains(m_buffer_trash, buffer))
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throw runtime_error{"buffer got removed during its creation"};
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return buffer;
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}
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void BufferManager::delete_buffer(Buffer& buffer)
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{
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auto it = find_if(m_buffers, [&](auto& p) { return p.get() == &buffer; });
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if (it == m_buffers.end()) // we might be trying to recursively delete this buffer
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return;
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m_buffer_trash.emplace_back(std::move(*it));
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m_buffers.erase(it);
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if (ClientManager::has_instance())
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ClientManager::instance().ensure_no_client_uses_buffer(buffer);
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buffer.on_unregistered();
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}
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Buffer* BufferManager::get_buffer_ifp(StringView name)
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{
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auto path = real_path(parse_filename(name));
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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 buf->name() == path))
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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(StringView 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{format("no such buffer '{}'", name)};
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return *res;
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}
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Buffer& BufferManager::get_first_buffer()
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{
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if (all_of(m_buffers, [](auto& b) { return (b->flags() & Buffer::Flags::Debug); }))
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create_buffer("*scratch*", Buffer::Flags::None,
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{StringData::create({"*** this is a *scratch* buffer which won't be automatically saved ***\n"}),
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StringData::create({"*** use it for notes or open a file buffer with the :edit command ***\n"})},
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ByteOrderMark::None, EolFormat::Lf, {InvalidTime, {}, {}});
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return *m_buffers.back();
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}
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void BufferManager::backup_modified_buffers()
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{
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for (auto& buf : m_buffers)
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{
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if ((buf->flags() & Buffer::Flags::File) and buf->is_modified()
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and not (buf->flags() & Buffer::Flags::ReadOnly))
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write_buffer_to_backup_file(*buf);
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}
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}
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void BufferManager::clear_buffer_trash()
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{
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m_buffer_trash.clear();
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}
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void BufferManager::arrange_buffers(ConstArrayView<String> first_ones)
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{
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Vector<size_t> indices;
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for (const auto& name : first_ones)
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{
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auto it = find_if(m_buffers, [&](auto& buf) { return buf->name() == name or buf->display_name() == name; });
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if (it == m_buffers.end())
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throw runtime_error{format("no such buffer '{}'", name)};
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size_t index = it - m_buffers.begin();
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if (contains(indices, index))
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throw runtime_error{format("buffer '{}' appears more than once", name)};
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indices.push_back(index);
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}
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BufferList res;
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for (size_t index : indices)
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res.push_back(std::move(m_buffers[index]));
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for (auto& buf : m_buffers)
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{
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if (buf)
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res.push_back(std::move(buf));
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}
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m_buffers = std::move(res);
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}
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}
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