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Add a | key that pipes each selection through an external filter

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This commit is contained in:
Maxime Coste 2011-12-28 19:04:06 +00:00
parent c9ac4d615d
commit 4de41197c0
1 changed files with 55 additions and 0 deletions
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55
src/main.cc
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@ -19,6 +19,8 @@
#include <sstream>
#include <boost/regex.hpp>
#include <ncurses.h>
#include <sys/types.h>
#include <sys/wait.h>
using namespace Kakoune;
using namespace std::placeholders;
@ -574,6 +576,58 @@ void do_command()
catch (prompt_aborted&) {}
}
void do_pipe(Window& window, int count)
{
try
{
auto cmdline = prompt("|", complete_nothing);
window.buffer().begin_undo_group();
for (auto& sel : const_cast<const Window&>(window).selections())
{
int write_pipe[2];
int read_pipe[2];
pipe(write_pipe);
pipe(read_pipe);
if (pid_t pid = fork())
{
close(write_pipe[0]);
close(read_pipe[1]);
std::string content = window.buffer().string(sel.begin(), sel.end());
write(write_pipe[1], content.c_str(), content.size());
close(write_pipe[1]);
std::string new_content;
char buffer[1024];
while (size_t size = read(read_pipe[0], buffer, 1024))
{
new_content += std::string(buffer, buffer+size);
}
close(read_pipe[0]);
waitpid(pid, NULL, 0);
window.buffer().modify(Modification::make_erase(sel.begin(), sel.end()));
window.buffer().modify(Modification::make_insert(sel.begin(), new_content));
}
else
{
close(write_pipe[1]);
close(read_pipe[0]);
dup2(read_pipe[1], 1);
dup2(write_pipe[0], 0);
execlp("sh", "sh", "-c", cmdline.c_str(), NULL);
}
}
window.buffer().end_undo_group();
}
catch (prompt_aborted&) {}
}
void do_search(Window& window)
{
try
@ -696,6 +750,7 @@ std::unordered_map<Key, std::function<void (Window& window, int count)>> keymap
{ return Selection(cursor.buffer().begin(), cursor.buffer().end()-1); }); } },
{ { Key::Modifiers::None, ':' }, [](Window& window, int count) { do_command(); } },
{ { Key::Modifiers::None, '|' }, do_pipe },
{ { Key::Modifiers::None, ' ' }, [](Window& window, int count) { window.clear_selections(); } },
{ { Key::Modifiers::None, 'w' }, [](Window& window, int count) { do { window.select(select_to_next_word); } while(--count > 0); } },
{ { Key::Modifiers::None, 'e' }, [](Window& window, int count) { do { window.select(select_to_next_word_end); } while(--count > 0); } },