// Some of this code was adapted from 'if_py_both.h' from the original
// vim source
#include <lauxlib.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "klib/kvec.h"
#include "lua.h"
#include "nvim/api/buffer.h"
#include "nvim/api/keysets_defs.h"
#include "nvim/api/private/defs.h"
#include "nvim/api/private/helpers.h"
#include "nvim/api/private/validate.h"
#include "nvim/ascii.h"
#include "nvim/autocmd.h"
#include "nvim/buffer.h"
#include "nvim/buffer_defs.h"
#include "nvim/buffer_updates.h"
#include "nvim/change.h"
#include "nvim/cursor.h"
#include "nvim/drawscreen.h"
#include "nvim/ex_cmds.h"
#include "nvim/extmark.h"
#include "nvim/func_attr.h"
#include "nvim/globals.h"
#include "nvim/lua/executor.h"
#include "nvim/mapping.h"
#include "nvim/mark.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/move.h"
#include "nvim/ops.h"
#include "nvim/pos_defs.h"
#include "nvim/types_defs.h"
#include "nvim/undo.h"
#include "nvim/vim.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "api/buffer.c.generated.h"
#endif
/// \defgroup api-buffer
///
/// \brief For more information on buffers, see |buffers|
///
/// Unloaded Buffers: ~
///
/// Buffers may be unloaded by the |:bunload| command or the buffer's
/// |'bufhidden'| option. When a buffer is unloaded its file contents are freed
/// from memory and vim cannot operate on the buffer lines until it is reloaded
/// (usually by opening the buffer again in a new window). API methods such as
/// |nvim_buf_get_lines()| and |nvim_buf_line_count()| will be affected.
///
/// You can use |nvim_buf_is_loaded()| or |nvim_buf_line_count()| to check
/// whether a buffer is loaded.
/// Returns the number of lines in the given buffer.
///
/// @param buffer Buffer handle, or 0 for current buffer
/// @param[out] err Error details, if any
/// @return Line count, or 0 for unloaded buffer. |api-buffer|
Integer nvim_buf_line_count(Buffer buffer, Error *err)
FUNC_API_SINCE(1)
{
buf_T *buf = find_buffer_by_handle(buffer, err);
if (!buf) {
return 0;
}
// return sentinel value if the buffer isn't loaded
if (buf->b_ml.ml_mfp == NULL) {
return 0;
}
return buf->b_ml.ml_line_count;
}
/// Activates buffer-update events on a channel, or as Lua callbacks.
///
/// Example (Lua): capture buffer updates in a global `events` variable
/// (use "vim.print(events)" to see its contents):
///
/// ```lua
/// events = {}
/// vim.api.nvim_buf_attach(0, false, {
/// on_lines = function(...)
/// table.insert(events, {...})
/// end,
/// })
/// ```
///
/// @see |nvim_buf_detach()|
/// @see |api-buffer-updates-lua|
///
/// @param channel_id
/// @param buffer Buffer handle, or 0 for current buffer
/// @param send_buffer True if the initial notification should contain the
/// whole buffer: first notification will be `nvim_buf_lines_event`.
| 