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Add an -fifo option to the 'edit' command

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In -fifo mode, the buffer's file is used as a fifo, writes are tracked
and udpated in the buffer. This should be useful for grep and make
commands.
This commit is contained in:
Maxime Coste 2012-08-29 00:17:37 +02:00
parent 00d32fd392
commit db98bcc278
1 changed files with 39 additions and 5 deletions
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44
src/commands.cc
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@ -14,11 +14,16 @@
#include "register_manager.hh"
#include "completion.hh"
#include "shell_manager.hh"
#include "event_manager.hh"
#if defined(__APPLE__)
#include <mach-o/dyld.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
namespace Kakoune
{
@ -229,26 +234,55 @@ Buffer* open_or_create(const String& filename, Context& context)
return buffer;
}
Buffer* open_fifo(const String& name , const String& filename, Context& context)
{
int fd = open(filename.c_str(), O_RDONLY);
if (fd < 0)
throw runtime_error("unable to open " + filename);
Buffer* buffer = new Buffer(name, Buffer::Type::Scratch);
buffer->hook_manager().add_hook(
"BufClose", [=](const String&, const Context&)
{ EventManager::instance().unwatch(fd); close(fd); }
);
EventManager::instance().watch(fd, [=, &context](int fd) {
char data[512];
ssize_t count = read(fd, data, 512);
if (count > 0)
{
buffer->insert(buffer->end(), String(data, data + count));
buffer->reset_undo_data();
context.draw_ifn();
}
});
return buffer;
}
template<bool force_reload>
void edit(const CommandParameters& params, Context& context)
{
ParametersParser parser(params, { { "scratch", false } });
ParametersParser parser(params, { { "scratch", false },
{ "fifo", true } });
const size_t param_count = parser.positional_count();
if (param_count == 0 or param_count > 3)
throw wrong_argument_count();
const String& filename = parser[0];
const String& name = parser[0];
Buffer* buffer = nullptr;
if (not force_reload)
buffer = BufferManager::instance().get_buffer(filename);
buffer = BufferManager::instance().get_buffer(name);
if (not buffer)
{
if (parser.has_option("scratch"))
buffer = new Buffer(filename, Buffer::Type::Scratch);
buffer = new Buffer(name, Buffer::Type::Scratch);
else if (parser.has_option("fifo"))
buffer = open_fifo(name, parser.option_value("fifo"), context);
else
buffer = open_or_create(filename, context);
buffer = open_or_create(name, context);
}
Window& window = *buffer->get_or_create_window();