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Auto generate buffer name when using edit -scratch with no name

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This will make it easier to create a temporary scratch buffer to
work in without having troubles with name collisions.

Fixes #849
This commit is contained in:
Maxime Coste 2019-04-08 22:16:44 +10:00
parent c8839e7904
commit 675dbfbe8b
1 changed files with 32 additions and 18 deletions
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50
src/commands.cc
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@ -322,34 +322,48 @@ struct CommandDesc
template<bool force_reload>
void edit(const ParametersParser& parser, Context& context, const ShellContext&)
{
if (parser.positional_count() == 0 and not force_reload)
if (parser.positional_count() == 0 and
not force_reload and
not parser.get_switch("scratch"))
throw wrong_argument_count();
auto& name = parser.positional_count() > 0 ? parser[0]
: context.buffer().name();
auto& buffer_manager = BufferManager::instance();
Buffer* buffer = buffer_manager.get_buffer_ifp(name);
const bool no_hooks = context.hooks_disabled();
const auto flags = (no_hooks ? Buffer::Flags::NoHooks : Buffer::Flags::None) |
(parser.get_switch("debug") ? Buffer::Flags::Debug : Buffer::Flags::None);
auto& buffer_manager = BufferManager::instance();
if (parser.get_switch("scratch"))
{
if (parser.get_switch("readonly") or parser.get_switch("fifo") or parser.get_switch("scroll"))
throw runtime_error("scratch is not compatible with readonly, fifo or scroll");
String name;
if (parser.positional_count() > 0)
name = parser[0];
else
{
for (int i = 0; true; ++i)
{
name = format("*scratch-{}*", i);
if (buffer_manager.get_buffer_ifp(name) == nullptr)
break;
}
}
Buffer* buffer = buffer_manager.create_buffer(std::move(name), flags);
context.change_buffer(*buffer);
return;
}
auto& name = parser.positional_count() > 0 ? parser[0]
: context.buffer().name();
Buffer* buffer = buffer_manager.get_buffer_ifp(name);
if (force_reload and buffer and buffer->flags() & Buffer::Flags::File)
reload_file_buffer(*buffer);
else
{
if (parser.get_switch("scratch"))
{
if (buffer and (force_reload or buffer->flags() != Buffer::Flags::None))
{
buffer_manager.delete_buffer(*buffer);
buffer = nullptr;
}
if (not buffer)
buffer = buffer_manager.create_buffer(name, flags);
}
else if (auto fifo = parser.get_switch("fifo"))
if (auto fifo = parser.get_switch("fifo"))
buffer = open_fifo(name, *fifo, flags, (bool)parser.get_switch("scroll"));
else if (not buffer)
{