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neovim/src/nvim/api/vim.c

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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
#include <assert.h>
#include <inttypes.h>
#include <limits.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "klib/kvec.h"
#include "lauxlib.h"
#include "nvim/api/buffer.h"
#include "nvim/api/deprecated.h"
#include "nvim/api/private/converter.h"
#include "nvim/api/private/defs.h"
#include "nvim/api/private/dispatch.h"
#include "nvim/api/private/helpers.h"
#include "nvim/api/private/validate.h"
#include "nvim/api/vim.h"
#include "nvim/ascii.h"
#include "nvim/autocmd.h"
#include "nvim/buffer.h"
#include "nvim/channel.h"
#include "nvim/context.h"
#include "nvim/drawscreen.h"
#include "nvim/eval.h"
#include "nvim/eval/typval.h"
#include "nvim/eval/typval_defs.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_eval.h"
#include "nvim/getchar.h"
#include "nvim/globals.h"
#include "nvim/grid.h"
#include "nvim/highlight.h"
#include "nvim/highlight_group.h"
#include "nvim/keycodes.h"
#include "nvim/log.h"
#include "nvim/lua/executor.h"
#include "nvim/macros.h"
#include "nvim/mapping.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/move.h"
#include "nvim/msgpack_rpc/channel.h"
#include "nvim/msgpack_rpc/channel_defs.h"
#include "nvim/msgpack_rpc/unpacker.h"
#include "nvim/ops.h"
#include "nvim/option.h"
#include "nvim/optionstr.h"
#include "nvim/os/input.h"
#include "nvim/os/os_defs.h"
#include "nvim/os/process.h"
#include "nvim/popupmenu.h"
#include "nvim/pos.h"
#include "nvim/runtime.h"
#include "nvim/state.h"
#include "nvim/statusline.h"
#include "nvim/strings.h"
#include "nvim/terminal.h"
#include "nvim/types.h"
#include "nvim/ui.h"
#include "nvim/vim.h"
#include "nvim/window.h"
#define LINE_BUFFER_MIN_SIZE 4096
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "api/vim.c.generated.h"
#endif
/// Gets a highlight definition by name.
///
/// @param name Highlight group name
/// @param rgb Export RGB colors
/// @param[out] err Error details, if any
/// @return Highlight definition map
/// @see nvim_get_hl_by_id
Dictionary nvim_get_hl_by_name(String name, Boolean rgb, Arena *arena, Error *err)
FUNC_API_SINCE(3)
{
Dictionary result = ARRAY_DICT_INIT;
int id = syn_name2id(name.data);
VALIDATE_S((id != 0), "highlight name", name.data, {
return result;
});
return nvim_get_hl_by_id(id, rgb, arena, err);
}
/// Gets a highlight definition by id. |hlID()|
/// @param hl_id Highlight id as returned by |hlID()|
/// @param rgb Export RGB colors
/// @param[out] err Error details, if any
/// @return Highlight definition map
/// @see nvim_get_hl_by_name
Dictionary nvim_get_hl_by_id(Integer hl_id, Boolean rgb, Arena *arena, Error *err)
FUNC_API_SINCE(3)
{
Dictionary dic = ARRAY_DICT_INIT;
VALIDATE_INT((syn_get_final_id((int)hl_id) != 0), "highlight id", hl_id, {
return dic;
});
int attrcode = syn_id2attr((int)hl_id);
return hl_get_attr_by_id(attrcode, rgb, arena, err);
}
/// Gets a highlight group by name
///
/// similar to |hlID()|, but allocates a new ID if not present.
Integer nvim_get_hl_id_by_name(String name)
FUNC_API_SINCE(7)
{
return syn_check_group(name.data, name.size);
}
Dictionary nvim__get_hl_defs(Integer ns_id, Arena *arena, Error *err)
{
if (ns_id == 0) {
return get_global_hl_defs(arena);
}
abort();
}
/// Sets a highlight group.
///
/// @note Unlike the `:highlight` command which can update a highlight group,
/// this function completely replaces the definition. For example:
/// ``nvim_set_hl(0, 'Visual', {})`` will clear the highlight group
/// 'Visual'.
///
/// @note The fg and bg keys also accept the string values `"fg"` or `"bg"`
/// which act as aliases to the corresponding foreground and background
/// values of the Normal group. If the Normal group has not been defined,
/// using these values results in an error.
///
/// @param ns_id Namespace id for this highlight |nvim_create_namespace()|.
/// Use 0 to set a highlight group globally |:highlight|.
/// @param name Highlight group name, e.g. "ErrorMsg"
/// @param val Highlight definition map, accepts the following keys:
/// - fg (or foreground): color name or "#RRGGBB", see note.
/// - bg (or background): color name or "#RRGGBB", see note.
/// - sp (or special): color name or "#RRGGBB"
/// - blend: integer between 0 and 100
/// - bold: boolean
/// - standout: boolean
/// - underline: boolean
/// - undercurl: boolean
/// - underdouble: boolean
/// - underdotted: boolean
/// - underdashed: boolean
/// - strikethrough: boolean
/// - italic: boolean
/// - reverse: boolean
/// - nocombine: boolean
/// - link: name of another highlight group to link to, see |:hi-link|.
/// - default: Don't override existing definition |:hi-default|
/// - ctermfg: Sets foreground of cterm color |ctermfg|
/// - ctermbg: Sets background of cterm color |ctermbg|
/// - cterm: cterm attribute map, like |highlight-args|. If not set,
/// cterm attributes will match those from the attribute map
/// documented above.
/// @param[out] err Error details, if any
///
// TODO(bfredl): val should take update vs reset flag
void nvim_set_hl(Integer ns_id, String name, Dict(highlight) *val, Error *err)
FUNC_API_SINCE(7)
{
int hl_id = syn_check_group(name.data, name.size);
VALIDATE_S((hl_id != 0), "highlight name", name.data, {
return;
});
int link_id = -1;
HlAttrs attrs = dict2hlattrs(val, true, &link_id, err);
if (!ERROR_SET(err)) {
ns_hl_def((NS)ns_id, hl_id, attrs, link_id, val);
}
}
/// Set active namespace for highlights. This can be set for a single window,
/// see |nvim_win_set_hl_ns()|.
///
/// @param ns_id the namespace to use
/// @param[out] err Error details, if any
void nvim_set_hl_ns(Integer ns_id, Error *err)
FUNC_API_SINCE(10)
{
VALIDATE_INT((ns_id >= 0), "namespace", ns_id, {
return;
});
ns_hl_global = (NS)ns_id;
hl_check_ns();
redraw_all_later(UPD_NOT_VALID);
}
/// Set active namespace for highlights while redrawing.
///
/// This function meant to be called while redrawing, primarily from
/// |nvim_set_decoration_provider()| on_win and on_line callbacks, which
/// are allowed to change the namespace during a redraw cycle.
///
/// @param ns_id the namespace to activate
/// @param[out] err Error details, if any
void nvim_set_hl_ns_fast(Integer ns_id, Error *err)
FUNC_API_SINCE(10)
FUNC_API_FAST
{
ns_hl_fast = (NS)ns_id;
hl_check_ns();
}
/// Sends input-keys to Nvim, subject to various quirks controlled by `mode`
/// flags. This is a blocking call, unlike |nvim_input()|.
///
/// On execution error: does not fail, but updates v:errmsg.
///
/// To input sequences like <C-o> use |nvim_replace_termcodes()| (typically
/// with escape_ks=false) to replace |keycodes|, then pass the result to
/// nvim_feedkeys().
///
/// Example:
/// <pre>vim
/// :let key = nvim_replace_termcodes("<C-o>", v:true, v:false, v:true)
/// :call nvim_feedkeys(key, 'n', v:false)
/// </pre>
///
/// @param keys to be typed
/// @param mode behavior flags, see |feedkeys()|
/// @param escape_ks If true, escape K_SPECIAL bytes in `keys`.
/// This should be false if you already used
/// |nvim_replace_termcodes()|, and true otherwise.
/// @see feedkeys()
/// @see vim_strsave_escape_ks
void nvim_feedkeys(String keys, String mode, Boolean escape_ks)
FUNC_API_SINCE(1)
{
bool remap = true;
bool insert = false;
bool typed = false;
bool execute = false;
bool dangerous = false;
for (size_t i = 0; i < mode.size; i++) {
switch (mode.data[i]) {
case 'n':
remap = false; break;
case 'm':
remap = true; break;
case 't':
typed = true; break;
case 'i':
insert = true; break;
case 'x':
execute = true; break;
case '!':
dangerous = true; break;
}
}
if (keys.size == 0 && !execute) {
return;
}
char *keys_esc;
if (escape_ks) {
// Need to escape K_SPECIAL before putting the string in the
// typeahead buffer.
keys_esc = vim_strsave_escape_ks(keys.data);
} else {
keys_esc = keys.data;
}
ins_typebuf(keys_esc, (remap ? REMAP_YES : REMAP_NONE),
insert ? 0 : typebuf.tb_len, !typed, false);
if (vgetc_busy) {
typebuf_was_filled = true;
}
if (escape_ks) {
xfree(keys_esc);
}
if (execute) {
int save_msg_scroll = msg_scroll;
// Avoid a 1 second delay when the keys start Insert mode.
msg_scroll = false;
if (!dangerous) {
ex_normal_busy++;
}
exec_normal(true);
if (!dangerous) {
ex_normal_busy--;
}
msg_scroll |= save_msg_scroll;
}
}
/// Queues raw user-input. Unlike |nvim_feedkeys()|, this uses a low-level
/// input buffer and the call is non-blocking (input is processed
/// asynchronously by the eventloop).
///
/// On execution error: does not fail, but updates v:errmsg.
///
/// @note |keycodes| like <CR> are translated, so "<" is special.
/// To input a literal "<", send <LT>.
///
/// @note For mouse events use |nvim_input_mouse()|. The pseudokey form
/// "<LeftMouse><col,row>" is deprecated since |api-level| 6.
///
/// @param keys to be typed
/// @return Number of bytes actually written (can be fewer than
/// requested if the buffer becomes full).
Integer nvim_input(String keys)
FUNC_API_SINCE(1) FUNC_API_FAST
{
return (Integer)input_enqueue(keys);
}
/// Send mouse event from GUI.
///
/// Non-blocking: does not wait on any result, but queues the event to be
/// processed soon by the event loop.
///
/// @note Currently this doesn't support "scripting" multiple mouse events
/// by calling it multiple times in a loop: the intermediate mouse
/// positions will be ignored. It should be used to implement real-time
/// mouse input in a GUI. The deprecated pseudokey form
/// ("<LeftMouse><col,row>") of |nvim_input()| has the same limitation.
///
/// @param button Mouse button: one of "left", "right", "middle", "wheel", "move".
/// @param action For ordinary buttons, one of "press", "drag", "release".
/// For the wheel, one of "up", "down", "left", "right". Ignored for "move".
/// @param modifier String of modifiers each represented by a single char.
/// The same specifiers are used as for a key press, except
/// that the "-" separator is optional, so "C-A-", "c-a"
/// and "CA" can all be used to specify Ctrl+Alt+click.
/// @param grid Grid number if the client uses |ui-multigrid|, else 0.
/// @param row Mouse row-position (zero-based, like redraw events)
/// @param col Mouse column-position (zero-based, like redraw events)
/// @param[out] err Error details, if any
void nvim_input_mouse(String button, String action, String modifier, Integer grid, Integer row,
Integer col, Error *err)
FUNC_API_SINCE(6) FUNC_API_FAST
{
if (button.data == NULL || action.data == NULL) {
goto error;
}
int code = 0;
if (strequal(button.data, "left")) {
code = KE_LEFTMOUSE;
} else if (strequal(button.data, "middle")) {
code = KE_MIDDLEMOUSE;
} else if (strequal(button.data, "right")) {
code = KE_RIGHTMOUSE;
} else if (strequal(button.data, "wheel")) {
code = KE_MOUSEDOWN;
} else if (strequal(button.data, "move")) {
code = KE_MOUSEMOVE;
} else {
goto error;
}
if (code == KE_MOUSEDOWN) {
if (strequal(action.data, "down")) {
code = KE_MOUSEUP;
} else if (strequal(action.data, "up")) {
// code = KE_MOUSEDOWN
} else if (strequal(action.data, "left")) {
code = KE_MOUSERIGHT;
} else if (strequal(action.data, "right")) {
code = KE_MOUSELEFT;
} else {
goto error;
}
} else if (code != KE_MOUSEMOVE) {
if (strequal(action.data, "press")) {
// pass
} else if (strequal(action.data, "drag")) {
code += KE_LEFTDRAG - KE_LEFTMOUSE;
} else if (strequal(action.data, "release")) {
code += KE_LEFTRELEASE - KE_LEFTMOUSE;
} else {
goto error;
}
}
int modmask = 0;
for (size_t i = 0; i < modifier.size; i++) {
char byte = modifier.data[i];
if (byte == '-') {
continue;
}
int mod = name_to_mod_mask(byte);
VALIDATE((mod != 0), "Invalid modifier: %c", byte, {
return;
});
modmask |= mod;
}
input_enqueue_mouse(code, (uint8_t)modmask, (int)grid, (int)row, (int)col);
return;
error:
api_set_error(err, kErrorTypeValidation,
"invalid button or action");
}
/// Replaces terminal codes and |keycodes| (<CR>, <Esc>, ...) in a string with
/// the internal representation.
///
/// @param str String to be converted.
/// @param from_part Legacy Vim parameter. Usually true.
/// @param do_lt Also translate <lt>. Ignored if `special` is false.
/// @param special Replace |keycodes|, e.g. <CR> becomes a "\r" char.
/// @see replace_termcodes
/// @see cpoptions
String nvim_replace_termcodes(String str, Boolean from_part, Boolean do_lt, Boolean special)
FUNC_API_SINCE(1)
{
if (str.size == 0) {
// Empty string
return (String) { .data = NULL, .size = 0 };
}
int flags = 0;
if (from_part) {
flags |= REPTERM_FROM_PART;
}
if (do_lt) {
flags |= REPTERM_DO_LT;
}
if (!special) {
flags |= REPTERM_NO_SPECIAL;
}
char *ptr = NULL;
replace_termcodes(str.data, str.size, &ptr, flags, NULL, CPO_TO_CPO_FLAGS);
return cstr_as_string(ptr);
}
/// Execute Lua code. Parameters (if any) are available as `...` inside the
/// chunk. The chunk can return a value.
///
/// Only statements are executed. To evaluate an expression, prefix it
/// with `return`: return my_function(...)
///
/// @param code Lua code to execute
/// @param args Arguments to the code
/// @param[out] err Details of an error encountered while parsing
/// or executing the Lua code.
///
/// @return Return value of Lua code if present or NIL.
Object nvim_exec_lua(String code, Array args, Error *err)
FUNC_API_SINCE(7)
FUNC_API_REMOTE_ONLY
{
return nlua_exec(code, args, err);
}
/// Notify the user with a message
///
/// Relays the call to vim.notify . By default forwards your message in the
/// echo area but can be overridden to trigger desktop notifications.
///
/// @param msg Message to display to the user
/// @param log_level The log level
/// @param opts Reserved for future use.
/// @param[out] err Error details, if any
Object nvim_notify(String msg, Integer log_level, Dictionary opts, Error *err)
FUNC_API_SINCE(7)
{
MAXSIZE_TEMP_ARRAY(args, 3);
ADD_C(args, STRING_OBJ(msg));
ADD_C(args, INTEGER_OBJ(log_level));
ADD_C(args, DICTIONARY_OBJ(opts));
return NLUA_EXEC_STATIC("return vim.notify(...)", args, err);
}
/// Calculates the number of display cells occupied by `text`.
/// Control characters including <Tab> count as one cell.
///
/// @param text Some text
/// @param[out] err Error details, if any
/// @return Number of cells
Integer nvim_strwidth(String text, Error *err)
FUNC_API_SINCE(1)
{
VALIDATE_S((text.size <= INT_MAX), "text length", "(too long)", {
return 0;
});
return (Integer)mb_string2cells(text.data);
}
/// Gets the paths contained in 'runtimepath'.
///
/// @return List of paths
ArrayOf(String) nvim_list_runtime_paths(Error *err)
FUNC_API_SINCE(1)
{
return nvim_get_runtime_file(NULL_STRING, true, err);
}
Array nvim__runtime_inspect(void)
{
return runtime_inspect();
}
/// Find files in runtime directories
///
/// "name" can contain wildcards. For example
/// nvim_get_runtime_file("colors/*.vim", true) will return all color
/// scheme files. Always use forward slashes (/) in the search pattern for
/// subdirectories regardless of platform.
///
/// It is not an error to not find any files. An empty array is returned then.
///
/// @param name pattern of files to search for
/// @param all whether to return all matches or only the first
/// @return list of absolute paths to the found files
ArrayOf(String) nvim_get_runtime_file(String name, Boolean all, Error *err)
FUNC_API_SINCE(7)
FUNC_API_FAST
{
Array rv = ARRAY_DICT_INIT;
int flags = DIP_DIRFILE | (all ? DIP_ALL : 0);
TRY_WRAP({
try_start();
do_in_runtimepath((name.size ? name.data : ""), flags, find_runtime_cb, &rv);
try_end(err);
});
return rv;
}
static void find_runtime_cb(char *fname, void *cookie)
{
Array *rv = (Array *)cookie;
if (fname != NULL) {
ADD(*rv, STRING_OBJ(cstr_to_string(fname)));
}
}
String nvim__get_lib_dir(void)
{
return cstr_as_string(get_lib_dir());
}
/// Find files in runtime directories
///
/// @param pat pattern of files to search for
/// @param all whether to return all matches or only the first
/// @param opts is_lua: only search lua subdirs
/// @return list of absolute paths to the found files
ArrayOf(String) nvim__get_runtime(Array pat, Boolean all, Dict(runtime) *opts, Error *err)
FUNC_API_SINCE(8)
FUNC_API_FAST
{
bool is_lua = api_object_to_bool(opts->is_lua, "is_lua", false, err);
bool source = api_object_to_bool(opts->do_source, "do_source", false, err);
VALIDATE((!source || nlua_is_deferred_safe()), "%s", "'do_source' used in fast callback", {});
if (ERROR_SET(err)) {
return (Array)ARRAY_DICT_INIT;
}
ArrayOf(String) res = runtime_get_named(is_lua, pat, all);
if (source) {
for (size_t i = 0; i < res.size; i++) {
String name = res.items[i].data.string;
(void)do_source(name.data, false, DOSO_NONE);
}
}
return res;
}
/// Changes the global working directory.
///
/// @param dir Directory path
/// @param[out] err Error details, if any
void nvim_set_current_dir(String dir, Error *err)
FUNC_API_SINCE(1)
{
VALIDATE_S((dir.size < MAXPATHL), "directory name", "(too long)", {
return;
});
char string[MAXPATHL];
memcpy(string, dir.data, dir.size);
string[dir.size] = NUL;
try_start();
if (!changedir_func(string, kCdScopeGlobal)) {
if (!try_end(err)) {
api_set_error(err, kErrorTypeException, "Failed to change directory");
}
return;
}
try_end(err);
}
/// Gets the current line.
///
/// @param[out] err Error details, if any
/// @return Current line string
String nvim_get_current_line(Error *err)
FUNC_API_SINCE(1)
{
return buffer_get_line(curbuf->handle, curwin->w_cursor.lnum - 1, err);
}
/// Sets the current line.
///
/// @param line Line contents
/// @param[out] err Error details, if any
void nvim_set_current_line(String line, Error *err)
FUNC_API_SINCE(1)
FUNC_API_CHECK_TEXTLOCK
{
buffer_set_line(curbuf->handle, curwin->w_cursor.lnum - 1, line, err);
}
/// Deletes the current line.
///
/// @param[out] err Error details, if any
void nvim_del_current_line(Error *err)
FUNC_API_SINCE(1)
FUNC_API_CHECK_TEXTLOCK
{
buffer_del_line(curbuf->handle, curwin->w_cursor.lnum - 1, err);
}
/// Gets a global (g:) variable.
///
/// @param name Variable name
/// @param[out] err Error details, if any
/// @return Variable value
Object nvim_get_var(String name, Error *err)
FUNC_API_SINCE(1)
{
dictitem_T *di = tv_dict_find(&globvardict, name.data, (ptrdiff_t)name.size);
if (di == NULL) { // try to autoload script
bool found = script_autoload(name.data, name.size, false) && !aborting();
VALIDATE(found, "Key not found: %s", name.data, {
return (Object)OBJECT_INIT;
});
di = tv_dict_find(&globvardict, name.data, (ptrdiff_t)name.size);
}
VALIDATE((di != NULL), "Key not found: %s", name.data, {
return (Object)OBJECT_INIT;
});
return vim_to_object(&di->di_tv);
}
/// Sets a global (g:) variable.
///
/// @param name Variable name
/// @param value Variable value
/// @param[out] err Error details, if any
void nvim_set_var(String name, Object value, Error *err)
FUNC_API_SINCE(1)
{
dict_set_var(&globvardict, name, value, false, false, err);
}
/// Removes a global (g:) variable.
///
/// @param name Variable name
/// @param[out] err Error details, if any
void nvim_del_var(String name, Error *err)
FUNC_API_SINCE(1)
{
dict_set_var(&globvardict, name, NIL, true, false, err);
}
/// Gets a v: variable.
///
/// @param name Variable name
/// @param[out] err Error details, if any
/// @return Variable value
Object nvim_get_vvar(String name, Error *err)
FUNC_API_SINCE(1)
{
return dict_get_value(&vimvardict, name, err);
}
/// Sets a v: variable, if it is not readonly.
///
/// @param name Variable name
/// @param value Variable value
/// @param[out] err Error details, if any
void nvim_set_vvar(String name, Object value, Error *err)
FUNC_API_SINCE(6)
{
dict_set_var(&vimvardict, name, value, false, false, err);
}
/// Echo a message.
///
/// @param chunks A list of [text, hl_group] arrays, each representing a
/// text chunk with specified highlight. `hl_group` element
/// can be omitted for no highlight.
/// @param history if true, add to |message-history|.
/// @param opts Optional parameters.
/// - verbose: Message was printed as a result of 'verbose' option
/// if Nvim was invoked with -V3log_file, the message will be
/// redirected to the log_file and suppressed from direct output.
void nvim_echo(Array chunks, Boolean history, Dict(echo_opts) *opts, Error *err)
FUNC_API_SINCE(7)
{
HlMessage hl_msg = parse_hl_msg(chunks, err);
if (ERROR_SET(err)) {
goto error;
}
bool verbose = api_object_to_bool(opts->verbose, "verbose", false, err);
if (verbose) {
verbose_enter();
}
msg_multiattr(hl_msg, history ? "echomsg" : "echo", history);
if (verbose) {
verbose_leave();
verbose_stop(); // flush now
}
if (history) {
// history takes ownership
return;
}
error:
hl_msg_free(hl_msg);
}
/// Writes a message to the Vim output buffer. Does not append "\n", the
/// message is buffered (won't display) until a linefeed is written.
///
/// @param str Message
void nvim_out_write(String str)
FUNC_API_SINCE(1)
{
write_msg(str, false);
}
/// Writes a message to the Vim error buffer. Does not append "\n", the
/// message is buffered (won't display) until a linefeed is written.
///
/// @param str Message
void nvim_err_write(String str)
FUNC_API_SINCE(1)
{
write_msg(str, true);
}
/// Writes a message to the Vim error buffer. Appends "\n", so the buffer is
/// flushed (and displayed).
///
/// @param str Message
/// @see nvim_err_write()
void nvim_err_writeln(String str)
FUNC_API_SINCE(1)
{
nvim_err_write(str);
nvim_err_write((String) { .data = "\n", .size = 1 });
}
/// Gets the current list of buffer handles
///
/// Includes unlisted (unloaded/deleted) buffers, like `:ls!`.
/// Use |nvim_buf_is_loaded()| to check if a buffer is loaded.
///
/// @return List of buffer handles
ArrayOf(Buffer) nvim_list_bufs(void)
FUNC_API_SINCE(1)
{
Array rv = ARRAY_DICT_INIT;
FOR_ALL_BUFFERS(b) {
rv.size++;
}
rv.items = xmalloc(sizeof(Object) * rv.size);
size_t i = 0;
FOR_ALL_BUFFERS(b) {
rv.items[i++] = BUFFER_OBJ(b->handle);
}
return rv;
}
/// Gets the current buffer.
///
/// @return Buffer handle
Buffer nvim_get_current_buf(void)
FUNC_API_SINCE(1)
{
return curbuf->handle;
}
/// Sets the current buffer.
///
/// @param buffer Buffer handle
/// @param[out] err Error details, if any
void nvim_set_current_buf(Buffer buffer, Error *err)
FUNC_API_SINCE(1)
FUNC_API_CHECK_TEXTLOCK
{
buf_T *buf = find_buffer_by_handle(buffer, err);
if (!buf) {
return;
}
try_start();
int result = do_buffer(DOBUF_GOTO, DOBUF_FIRST, FORWARD, buf->b_fnum, 0);
if (!try_end(err) && result == FAIL) {
api_set_error(err,
kErrorTypeException,
"Failed to switch to buffer %d",
buffer);
}
}
/// Gets the current list of window handles.
///
/// @return List of window handles
ArrayOf(Window) nvim_list_wins(void)
FUNC_API_SINCE(1)
{
Array rv = ARRAY_DICT_INIT;
FOR_ALL_TAB_WINDOWS(tp, wp) {
rv.size++;
}
rv.items = xmalloc(sizeof(Object) * rv.size);
size_t i = 0;
FOR_ALL_TAB_WINDOWS(tp, wp) {
rv.items[i++] = WINDOW_OBJ(wp->handle);
}
return rv;
}
/// Gets the current window.
///
/// @return Window handle
Window nvim_get_current_win(void)
FUNC_API_SINCE(1)
{
return curwin->handle;
}
/// Sets the current window.
///
/// @param window Window handle
/// @param[out] err Error details, if any
void nvim_set_current_win(Window window, Error *err)
FUNC_API_SINCE(1)
FUNC_API_CHECK_TEXTLOCK
{
win_T *win = find_window_by_handle(window, err);
if (!win) {
return;
}
try_start();
goto_tabpage_win(win_find_tabpage(win), win);
if (!try_end(err) && win != curwin) {
api_set_error(err,
kErrorTypeException,
"Failed to switch to window %d",
window);
}
}
/// Creates a new, empty, unnamed buffer.
///
/// @param listed Sets 'buflisted'
/// @param scratch Creates a "throwaway" |scratch-buffer| for temporary work
/// (always 'nomodified'). Also sets 'nomodeline' on the buffer.
/// @param[out] err Error details, if any
/// @return Buffer handle, or 0 on error
///
/// @see buf_open_scratch
Buffer nvim_create_buf(Boolean listed, Boolean scratch, Error *err)
FUNC_API_SINCE(6)
{
try_start();
buf_T *buf = buflist_new(NULL, NULL, (linenr_T)0,
BLN_NOOPT | BLN_NEW | (listed ? BLN_LISTED : 0));
try_end(err);
if (buf == NULL) {
goto fail;
}
// Open the memline for the buffer. This will avoid spurious autocmds when
// a later nvim_buf_set_lines call would have needed to "open" the buffer.
try_start();
block_autocmds();
int status = ml_open(buf);
unblock_autocmds();
try_end(err);
if (status == FAIL) {
goto fail;
}
if (scratch) {
aco_save_T aco;
aucmd_prepbuf(&aco, buf);
set_option_value("bufhidden", 0L, "hide", OPT_LOCAL);
set_option_value("buftype", 0L, "nofile", OPT_LOCAL);
set_option_value("swapfile", 0L, NULL, OPT_LOCAL);
set_option_value("modeline", 0L, NULL, OPT_LOCAL); // 'nomodeline'
aucmd_restbuf(&aco);
}
return buf->b_fnum;
fail:
if (!ERROR_SET(err)) {
api_set_error(err, kErrorTypeException, "Failed to create buffer");
}
return 0;
}
/// Open a terminal instance in a buffer
///
/// By default (and currently the only option) the terminal will not be
/// connected to an external process. Instead, input send on the channel
/// will be echoed directly by the terminal. This is useful to display
/// ANSI terminal sequences returned as part of a rpc message, or similar.
///
/// Note: to directly initiate the terminal using the right size, display the
/// buffer in a configured window before calling this. For instance, for a
/// floating display, first create an empty buffer using |nvim_create_buf()|,
/// then display it using |nvim_open_win()|, and then call this function.
/// Then |nvim_chan_send()| can be called immediately to process sequences
/// in a virtual terminal having the intended size.
///
/// @param buffer the buffer to use (expected to be empty)
/// @param opts Optional parameters.
/// - on_input: lua callback for input sent, i e keypresses in terminal
/// mode. Note: keypresses are sent raw as they would be to the pty
/// master end. For instance, a carriage return is sent
/// as a "\r", not as a "\n". |textlock| applies. It is possible
/// to call |nvim_chan_send()| directly in the callback however.
/// ["input", term, bufnr, data]
/// @param[out] err Error details, if any
/// @return Channel id, or 0 on error
Integer nvim_open_term(Buffer buffer, DictionaryOf(LuaRef) opts, Error *err)
FUNC_API_SINCE(7)
{
buf_T *buf = find_buffer_by_handle(buffer, err);
if (!buf) {
return 0;
}
LuaRef cb = LUA_NOREF;
for (size_t i = 0; i < opts.size; i++) {
String k = opts.items[i].key;
Object *v = &opts.items[i].value;
if (strequal("on_input", k.data)) {
VALIDATE_T("on_input", kObjectTypeLuaRef, v->type, {
return 0;
});
cb = v->data.luaref;
v->data.luaref = LUA_NOREF;
break;
} else {
VALIDATE_S(false, "'opts' key", k.data, {});
}
}
TerminalOptions topts;
Channel *chan = channel_alloc(kChannelStreamInternal);
chan->stream.internal.cb = cb;
chan->stream.internal.closed = false;
topts.data = chan;
// NB: overridden in terminal_check_size if a window is already
// displaying the buffer
topts.width = (uint16_t)MAX(curwin->w_width_inner - win_col_off(curwin), 0);
topts.height = (uint16_t)curwin->w_height_inner;
topts.write_cb = term_write;
topts.resize_cb = term_resize;
topts.close_cb = term_close;
Terminal *term = terminal_open(buf, topts);
terminal_check_size(term);
chan->term = term;
return (Integer)chan->id;
}
static void term_write(char *buf, size_t size, void *data) // NOLINT(readability-non-const-parameter)
{
Channel *chan = data;
LuaRef cb = chan->stream.internal.cb;
if (cb == LUA_NOREF) {
return;
}
MAXSIZE_TEMP_ARRAY(args, 3);
ADD_C(args, INTEGER_OBJ((Integer)chan->id));
ADD_C(args, BUFFER_OBJ(terminal_buf(chan->term)));
ADD_C(args, STRING_OBJ(((String){ .data = buf, .size = size })));
textlock++;
nlua_call_ref(cb, "input", args, false, NULL);
textlock--;
}
static void term_resize(uint16_t width, uint16_t height, void *data)
{
// TODO(bfredl): lua callback
}
static void term_close(void *data)
{
Channel *chan = data;
terminal_destroy(&chan->term);
api_free_luaref(chan->stream.internal.cb);
chan->stream.internal.cb = LUA_NOREF;
channel_decref(chan);
}
/// Send data to channel `id`. For a job, it writes it to the
/// stdin of the process. For the stdio channel |channel-stdio|,
/// it writes to Nvim's stdout. For an internal terminal instance
/// (|nvim_open_term()|) it writes directly to terminal output.
/// See |channel-bytes| for more information.
///
/// This function writes raw data, not RPC messages. If the channel
/// was created with `rpc=true` then the channel expects RPC
/// messages, use |vim.rpcnotify()| and |vim.rpcrequest()| instead.
///
/// @param chan id of the channel
/// @param data data to write. 8-bit clean: can contain NUL bytes.
/// @param[out] err Error details, if any
void nvim_chan_send(Integer chan, String data, Error *err)
FUNC_API_SINCE(7) FUNC_API_REMOTE_ONLY FUNC_API_LUA_ONLY
{
const char *error = NULL;
if (!data.size) {
return;
}
channel_send((uint64_t)chan, data.data, data.size,
false, &error);
VALIDATE(!error, "%s", error, {});
}
/// Gets the current list of tabpage handles.
///
/// @return List of tabpage handles
ArrayOf(Tabpage) nvim_list_tabpages(void)
FUNC_API_SINCE(1)
{
Array rv = ARRAY_DICT_INIT;
FOR_ALL_TABS(tp) {
rv.size++;
}
rv.items = xmalloc(sizeof(Object) * rv.size);
size_t i = 0;
FOR_ALL_TABS(tp) {
rv.items[i++] = TABPAGE_OBJ(tp->handle);
}
return rv;
}
/// Gets the current tabpage.
///
/// @return Tabpage handle
Tabpage nvim_get_current_tabpage(void)
FUNC_API_SINCE(1)
{
return curtab->handle;
}
/// Sets the current tabpage.
///
/// @param tabpage Tabpage handle
/// @param[out] err Error details, if any
void nvim_set_current_tabpage(Tabpage tabpage, Error *err)
FUNC_API_SINCE(1)
FUNC_API_CHECK_TEXTLOCK
{
tabpage_T *tp = find_tab_by_handle(tabpage, err);
if (!tp) {
return;
}
try_start();
goto_tabpage_tp(tp, true, true);
if (!try_end(err) && tp != curtab) {
api_set_error(err,
kErrorTypeException,
"Failed to switch to tabpage %d",
tabpage);
}
}
/// Pastes at cursor, in any mode.
///
/// Invokes the `vim.paste` handler, which handles each mode appropriately.
/// Sets redo/undo. Faster than |nvim_input()|. Lines break at LF ("\n").
///
/// Errors ('nomodifiable', `vim.paste()` failure, …) are reflected in `err`
/// but do not affect the return value (which is strictly decided by
/// `vim.paste()`). On error, subsequent calls are ignored ("drained") until
/// the next paste is initiated (phase 1 or -1).
///
/// @param data Multiline input. May be binary (containing NUL bytes).
/// @param crlf Also break lines at CR and CRLF.
/// @param phase -1: paste in a single call (i.e. without streaming).
/// To "stream" a paste, call `nvim_paste` sequentially with
/// these `phase` values:
/// - 1: starts the paste (exactly once)
/// - 2: continues the paste (zero or more times)
/// - 3: ends the paste (exactly once)
/// @param[out] err Error details, if any
/// @return
/// - true: Client may continue pasting.
/// - false: Client must cancel the paste.
Boolean nvim_paste(String data, Boolean crlf, Integer phase, Error *err)
FUNC_API_SINCE(6)
FUNC_API_CHECK_TEXTLOCK
{
static bool draining = false;
bool cancel = false;
VALIDATE_INT((phase >= -1 && phase <= 3), "phase", phase, {
return false;
});
Array args = ARRAY_DICT_INIT;
Object rv = OBJECT_INIT;
if (phase == -1 || phase == 1) { // Start of paste-stream.
draining = false;
} else if (draining) {
// Skip remaining chunks. Report error only once per "stream".
goto theend;
}
Array lines = string_to_array(data, crlf);
ADD(args, ARRAY_OBJ(lines));
ADD(args, INTEGER_OBJ(phase));
rv = nvim_exec_lua(STATIC_CSTR_AS_STRING("return vim.paste(...)"), args,
err);
if (ERROR_SET(err)) {
draining = true;
goto theend;
}
if (!(State & (MODE_CMDLINE | MODE_INSERT)) && (phase == -1 || phase == 1)) {
ResetRedobuff();
AppendCharToRedobuff('a'); // Dot-repeat.
}
// vim.paste() decides if client should cancel. Errors do NOT cancel: we
// want to drain remaining chunks (rather than divert them to main input).
cancel = (rv.type == kObjectTypeBoolean && !rv.data.boolean);
if (!cancel && !(State & MODE_CMDLINE)) { // Dot-repeat.
for (size_t i = 0; i < lines.size; i++) {
String s = lines.items[i].data.string;
assert(s.size <= INT_MAX);
AppendToRedobuffLit(s.data, (int)s.size);
// readfile()-style: "\n" is indicated by presence of N+1 item.
if (i + 1 < lines.size) {
AppendCharToRedobuff(NL);
}
}
}
if (!(State & (MODE_CMDLINE | MODE_INSERT)) && (phase == -1 || phase == 3)) {
AppendCharToRedobuff(ESC); // Dot-repeat.
}
theend:
api_free_object(rv);
api_free_array(args);
if (cancel || phase == -1 || phase == 3) { // End of paste-stream.
draining = false;
}
return !cancel;
}
/// Puts text at cursor, in any mode.
///
/// Compare |:put| and |p| which are always linewise.
///
/// @param lines |readfile()|-style list of lines. |channel-lines|
/// @param type Edit behavior: any |getregtype()| result, or:
/// - "b" |blockwise-visual| mode (may include width, e.g. "b3")
/// - "c" |charwise| mode
/// - "l" |linewise| mode
/// - "" guess by contents, see |setreg()|
/// @param after If true insert after cursor (like |p|), or before (like |P|).
/// @param follow If true place cursor at end of inserted text.
/// @param[out] err Error details, if any
void nvim_put(ArrayOf(String) lines, String type, Boolean after, Boolean follow, Error *err)
FUNC_API_SINCE(6)
FUNC_API_CHECK_TEXTLOCK
{
yankreg_T *reg = xcalloc(1, sizeof(yankreg_T));
VALIDATE_S((prepare_yankreg_from_object(reg, type, lines.size)), "type", type.data, {
goto cleanup;
});
if (lines.size == 0) {
goto cleanup; // Nothing to do.
}
for (size_t i = 0; i < lines.size; i++) {
VALIDATE_T("line", kObjectTypeString, lines.items[i].type, {
goto cleanup;
});
String line = lines.items[i].data.string;
reg->y_array[i] = xmemdupz(line.data, line.size);
memchrsub(reg->y_array[i], NUL, NL, line.size);
}
finish_yankreg_from_object(reg, false);
TRY_WRAP({
try_start();
bool VIsual_was_active = VIsual_active;
msg_silent++; // Avoid "N more lines" message.
do_put(0, reg, after ? FORWARD : BACKWARD, 1, follow ? PUT_CURSEND : 0);
msg_silent--;
VIsual_active = VIsual_was_active;
try_end(err);
});
cleanup:
free_register(reg);
xfree(reg);
}
/// Subscribes to event broadcasts.
///
/// @param channel_id Channel id (passed automatically by the dispatcher)
/// @param event Event type string
void nvim_subscribe(uint64_t channel_id, String event)
FUNC_API_SINCE(1) FUNC_API_REMOTE_ONLY
{
size_t length = (event.size < METHOD_MAXLEN ? event.size : METHOD_MAXLEN);
char e[METHOD_MAXLEN + 1];
memcpy(e, event.data, length);
e[length] = NUL;
rpc_subscribe(channel_id, e);
}
/// Unsubscribes to event broadcasts.
///
/// @param channel_id Channel id (passed automatically by the dispatcher)
/// @param event Event type string
void nvim_unsubscribe(uint64_t channel_id, String event)
FUNC_API_SINCE(1) FUNC_API_REMOTE_ONLY
{
size_t length = (event.size < METHOD_MAXLEN ?
event.size :
METHOD_MAXLEN);
char e[METHOD_MAXLEN + 1];
memcpy(e, event.data, length);
e[length] = NUL;
rpc_unsubscribe(channel_id, e);
}
/// Returns the 24-bit RGB value of a |nvim_get_color_map()| color name or
/// "#rrggbb" hexadecimal string.
///
/// Example:
/// <pre>vim
/// :echo nvim_get_color_by_name("Pink")
/// :echo nvim_get_color_by_name("#cbcbcb")
/// </pre>
///
/// @param name Color name or "#rrggbb" string
/// @return 24-bit RGB value, or -1 for invalid argument.
Integer nvim_get_color_by_name(String name)
FUNC_API_SINCE(1)
{
int dummy;
return name_to_color(name.data, &dummy);
}
/// Returns a map of color names and RGB values.
///
/// Keys are color names (e.g. "Aqua") and values are 24-bit RGB color values
/// (e.g. 65535).
///
/// @return Map of color names and RGB values.
Dictionary nvim_get_color_map(void)
FUNC_API_SINCE(1)
{
Dictionary colors = ARRAY_DICT_INIT;
for (int i = 0; color_name_table[i].name != NULL; i++) {
PUT(colors, color_name_table[i].name,
INTEGER_OBJ(color_name_table[i].color));
}
return colors;
}
/// Gets a map of the current editor state.
///
/// @param opts Optional parameters.
/// - types: List of |context-types| ("regs", "jumps", "bufs",
/// "gvars", …) to gather, or empty for "all".
/// @param[out] err Error details, if any
///
/// @return map of global |context|.
Dictionary nvim_get_context(Dict(context) *opts, Error *err)
FUNC_API_SINCE(6)
{
Array types = ARRAY_DICT_INIT;
if (HAS_KEY(opts->types)) {
VALIDATE_T("types", kObjectTypeArray, opts->types.type, {
return (Dictionary)ARRAY_DICT_INIT;
});
types = opts->types.data.array;
}
int int_types = types.size > 0 ? 0 : kCtxAll;
if (types.size > 0) {
for (size_t i = 0; i < types.size; i++) {
if (types.items[i].type == kObjectTypeString) {
const char *const s = types.items[i].data.string.data;
if (strequal(s, "regs")) {
int_types |= kCtxRegs;
} else if (strequal(s, "jumps")) {
int_types |= kCtxJumps;
} else if (strequal(s, "bufs")) {
int_types |= kCtxBufs;
} else if (strequal(s, "gvars")) {
int_types |= kCtxGVars;
} else if (strequal(s, "sfuncs")) {
int_types |= kCtxSFuncs;
} else if (strequal(s, "funcs")) {
int_types |= kCtxFuncs;
} else {
VALIDATE_S(false, "type", s, {
return (Dictionary)ARRAY_DICT_INIT;
});
}
}
}
}
Context ctx = CONTEXT_INIT;
ctx_save(&ctx, int_types);
Dictionary dict = ctx_to_dict(&ctx);
ctx_free(&ctx);
return dict;
}
/// Sets the current editor state from the given |context| map.
///
/// @param dict |Context| map.
Object nvim_load_context(Dictionary dict)
FUNC_API_SINCE(6)
{
Context ctx = CONTEXT_INIT;
int save_did_emsg = did_emsg;
did_emsg = false;
ctx_from_dict(dict, &ctx);
if (!did_emsg) {
ctx_restore(&ctx, kCtxAll);
}
ctx_free(&ctx);
did_emsg = save_did_emsg;
return (Object)OBJECT_INIT;
}
/// Gets the current mode. |mode()|
/// "blocking" is true if Nvim is waiting for input.
///
/// @returns Dictionary { "mode": String, "blocking": Boolean }
Dictionary nvim_get_mode(void)
FUNC_API_SINCE(2) FUNC_API_FAST
{
Dictionary rv = ARRAY_DICT_INIT;
char modestr[MODE_MAX_LENGTH];
get_mode(modestr);
bool blocked = input_blocking();
PUT(rv, "mode", STRING_OBJ(cstr_to_string(modestr)));
PUT(rv, "blocking", BOOLEAN_OBJ(blocked));
return rv;
}
/// Gets a list of global (non-buffer-local) |mapping| definitions.
///
/// @param mode Mode short-name ("n", "i", "v", ...)
/// @returns Array of |maparg()|-like dictionaries describing mappings.
/// The "buffer" key is always zero.
ArrayOf(Dictionary) nvim_get_keymap(String mode)
FUNC_API_SINCE(3)
{
return keymap_array(mode, NULL);
}
/// Sets a global |mapping| for the given mode.
///
/// To set a buffer-local mapping, use |nvim_buf_set_keymap()|.
///
/// Unlike |:map|, leading/trailing whitespace is accepted as part of the {lhs} or {rhs}.
/// Empty {rhs} is |<Nop>|. |keycodes| are replaced as usual.
///
/// Example:
/// <pre>vim
/// call nvim_set_keymap('n', ' <NL>', '', {'nowait': v:true})
/// </pre>
///
/// is equivalent to:
/// <pre>vim
/// nmap <nowait> <Space><NL> <Nop>
/// </pre>
///
/// @param channel_id
/// @param mode Mode short-name (map command prefix: "n", "i", "v", "x", …)
/// or "!" for |:map!|, or empty string for |:map|.
/// @param lhs Left-hand-side |{lhs}| of the mapping.
/// @param rhs Right-hand-side |{rhs}| of the mapping.
/// @param opts Optional parameters map: Accepts all |:map-arguments| as keys except |<buffer>|,
/// values are booleans (default false). Also:
/// - "noremap" non-recursive mapping |:noremap|
/// - "desc" human-readable description.
/// - "callback" Lua function called when the mapping is executed.
/// - "replace_keycodes" (boolean) When "expr" is true, replace keycodes in the
/// resulting string (see |nvim_replace_termcodes()|). Returning nil from the Lua
/// "callback" is equivalent to returning an empty string.
/// @param[out] err Error details, if any.
void nvim_set_keymap(uint64_t channel_id, String mode, String lhs, String rhs, Dict(keymap) *opts,
Error *err)
FUNC_API_SINCE(6)
{
modify_keymap(channel_id, -1, false, mode, lhs, rhs, opts, err);
}
/// Unmaps a global |mapping| for the given mode.
///
/// To unmap a buffer-local mapping, use |nvim_buf_del_keymap()|.
///
/// @see |nvim_set_keymap()|
void nvim_del_keymap(uint64_t channel_id, String mode, String lhs, Error *err)
FUNC_API_SINCE(6)
{
nvim_buf_del_keymap(channel_id, -1, mode, lhs, err);
}
/// Returns a 2-tuple (Array), where item 0 is the current channel id and item
/// 1 is the |api-metadata| map (Dictionary).
///
/// @returns 2-tuple [{channel-id}, {api-metadata}]
Array nvim_get_api_info(uint64_t channel_id, Arena *arena)
FUNC_API_SINCE(1) FUNC_API_FAST FUNC_API_REMOTE_ONLY
{
Array rv = arena_array(arena, 2);
assert(channel_id <= INT64_MAX);
ADD_C(rv, INTEGER_OBJ((int64_t)channel_id));
ADD_C(rv, DICTIONARY_OBJ(api_metadata()));
return rv;
}
/// Self-identifies the client.
///
/// The client/plugin/application should call this after connecting, to provide
/// hints about its identity and purpose, for debugging and orchestration.
///
/// Can be called more than once; the caller should merge old info if
/// appropriate. Example: library first identifies the channel, then a plugin
/// using that library later identifies itself.
///
/// @note "Something is better than nothing". You don't need to include all the
/// fields.
///
/// @param channel_id
/// @param name Short name for the connected client
/// @param version Dictionary describing the version, with these
/// (optional) keys:
/// - "major" major version (defaults to 0 if not set, for no release yet)
/// - "minor" minor version
/// - "patch" patch number
/// - "prerelease" string describing a prerelease, like "dev" or "beta1"
/// - "commit" hash or similar identifier of commit
/// @param type Must be one of the following values. Client libraries should
/// default to "remote" unless overridden by the user.
/// - "remote" remote client connected to Nvim.
/// - "ui" gui frontend
/// - "embedder" application using Nvim as a component (for example,
/// IDE/editor implementing a vim mode).
/// - "host" plugin host, typically started by nvim
/// - "plugin" single plugin, started by nvim
/// @param methods Builtin methods in the client. For a host, this does not
/// include plugin methods which will be discovered later.
/// The key should be the method name, the values are dicts with
/// these (optional) keys (more keys may be added in future
/// versions of Nvim, thus unknown keys are ignored. Clients
/// must only use keys defined in this or later versions of
/// Nvim):
/// - "async" if true, send as a notification. If false or unspecified,
/// use a blocking request
/// - "nargs" Number of arguments. Could be a single integer or an array
/// of two integers, minimum and maximum inclusive.
///
/// @param attributes Arbitrary string:string map of informal client properties.
/// Suggested keys:
/// - "website": Client homepage URL (e.g. GitHub repository)
/// - "license": License description ("Apache 2", "GPLv3", "MIT", …)
/// - "logo": URI or path to image, preferably small logo or icon.
/// .png or .svg format is preferred.
///
/// @param[out] err Error details, if any
void nvim_set_client_info(uint64_t channel_id, String name, Dictionary version, String type,
Dictionary methods, Dictionary attributes, Error *err)
FUNC_API_SINCE(4) FUNC_API_REMOTE_ONLY
{
Dictionary info = ARRAY_DICT_INIT;
PUT(info, "name", copy_object(STRING_OBJ(name), NULL));
version = copy_dictionary(version, NULL);
bool has_major = false;
for (size_t i = 0; i < version.size; i++) {
if (strequal(version.items[i].key.data, "major")) {
has_major = true;
break;
}
}
if (!has_major) {
PUT(version, "major", INTEGER_OBJ(0));
}
PUT(info, "version", DICTIONARY_OBJ(version));
PUT(info, "type", copy_object(STRING_OBJ(type), NULL));
PUT(info, "methods", DICTIONARY_OBJ(copy_dictionary(methods, NULL)));
PUT(info, "attributes", DICTIONARY_OBJ(copy_dictionary(attributes, NULL)));
rpc_set_client_info(channel_id, info);
}
/// Gets information about a channel.
///
/// @returns Dictionary describing a channel, with these keys:
/// - "id" Channel id.
/// - "argv" (optional) Job arguments list.
/// - "stream" Stream underlying the channel.
/// - "stdio" stdin and stdout of this Nvim instance
/// - "stderr" stderr of this Nvim instance
/// - "socket" TCP/IP socket or named pipe
/// - "job" Job with communication over its stdio.
/// - "mode" How data received on the channel is interpreted.
/// - "bytes" Send and receive raw bytes.
/// - "terminal" |terminal| instance interprets ASCII sequences.
/// - "rpc" |RPC| communication on the channel is active.
/// - "pty" (optional) Name of pseudoterminal. On a POSIX system this
/// is a device path like "/dev/pts/1". If the name is unknown,
/// the key will still be present if a pty is used (e.g. for
/// conpty on Windows).
/// - "buffer" (optional) Buffer with connected |terminal| instance.
/// - "client" (optional) Info about the peer (client on the other end of
/// the RPC channel), if provided by it via
/// |nvim_set_client_info()|.
///
Dictionary nvim_get_chan_info(Integer chan, Error *err)
FUNC_API_SINCE(4)
{
if (chan < 0) {
return (Dictionary)ARRAY_DICT_INIT;
}
return channel_info((uint64_t)chan);
}
/// Get information about all open channels.
///
/// @returns Array of Dictionaries, each describing a channel with
/// the format specified at |nvim_get_chan_info()|.
Array nvim_list_chans(void)
FUNC_API_SINCE(4)
{
return channel_all_info();
}
/// Calls many API methods atomically.
///
/// This has two main usages:
/// 1. To perform several requests from an async context atomically, i.e.
/// without interleaving redraws, RPC requests from other clients, or user
/// interactions (however API methods may trigger autocommands or event
/// processing which have such side effects, e.g. |:sleep| may wake timers).
/// 2. To minimize RPC overhead (roundtrips) of a sequence of many requests.
///
/// @param channel_id
/// @param calls an array of calls, where each call is described by an array
/// with two elements: the request name, and an array of arguments.
/// @param[out] err Validation error details (malformed `calls` parameter),
/// if any. Errors from batched calls are given in the return value.
///
/// @return Array of two elements. The first is an array of return
/// values. The second is NIL if all calls succeeded. If a call resulted in
/// an error, it is a three-element array with the zero-based index of the call
/// which resulted in an error, the error type and the error message. If an
/// error occurred, the values from all preceding calls will still be returned.
Array nvim_call_atomic(uint64_t channel_id, Array calls, Arena *arena, Error *err)
FUNC_API_SINCE(1) FUNC_API_REMOTE_ONLY
{
Array rv = arena_array(arena, 2);
Array results = arena_array(arena, calls.size);
Error nested_error = ERROR_INIT;
size_t i; // also used for freeing the variables
for (i = 0; i < calls.size; i++) {
VALIDATE_T("'calls' item", kObjectTypeArray, calls.items[i].type, {
goto theend;
});
Array call = calls.items[i].data.array;
VALIDATE_EXP((call.size == 2), "'calls' item", "2-item Array", NULL, {
goto theend;
});
VALIDATE_T("name", kObjectTypeString, call.items[0].type, {
goto theend;
});
String name = call.items[0].data.string;
VALIDATE_T("call args", kObjectTypeArray, call.items[1].type, {
goto theend;
});
Array args = call.items[1].data.array;
MsgpackRpcRequestHandler handler =
msgpack_rpc_get_handler_for(name.data,
name.size,
&nested_error);
if (ERROR_SET(&nested_error)) {
break;
}
Object result = handler.fn(channel_id, args, arena, &nested_error);
if (ERROR_SET(&nested_error)) {
// error handled after loop
break;
}
// TODO(bfredl): wasteful copy. It could be avoided to encoding to msgpack
// directly here. But `result` might become invalid when next api function
// is called in the loop.
ADD_C(results, copy_object(result, arena));
if (!handler.arena_return) {
api_free_object(result);
}
}
ADD_C(rv, ARRAY_OBJ(results));
if (ERROR_SET(&nested_error)) {
Array errval = arena_array(arena, 3);
ADD_C(errval, INTEGER_OBJ((Integer)i));
ADD_C(errval, INTEGER_OBJ(nested_error.type));
ADD_C(errval, STRING_OBJ(copy_string(cstr_as_string(nested_error.msg), arena)));
ADD_C(rv, ARRAY_OBJ(errval));
} else {
ADD_C(rv, NIL);
}
theend:
api_clear_error(&nested_error);
return rv;
}
/// Writes a message to vim output or error buffer. The string is split
/// and flushed after each newline. Incomplete lines are kept for writing
/// later.
///
/// @param message Message to write
/// @param to_err true: message is an error (uses `emsg` instead of `msg`)
static void write_msg(String message, bool to_err)
{
static StringBuilder out_line_buf = KV_INITIAL_VALUE;
static StringBuilder err_line_buf = KV_INITIAL_VALUE;
#define PUSH_CHAR(i, line_buf, msg) \
if (kv_max(line_buf) == 0) { \
kv_resize(line_buf, LINE_BUFFER_MIN_SIZE); \
} \
if (message.data[i] == NL) { \
kv_push(line_buf, NUL); \
msg(line_buf.items); \
kv_drop(line_buf, kv_size(line_buf)); \
kv_resize(line_buf, LINE_BUFFER_MIN_SIZE); \
continue; \
} \
kv_push(line_buf, message.data[i]);
no_wait_return++;
for (uint32_t i = 0; i < message.size; i++) {
if (got_int) {
break;
}
if (to_err) {
PUSH_CHAR(i, err_line_buf, emsg);
} else {
PUSH_CHAR(i, out_line_buf, msg);
}
}
no_wait_return--;
msg_end();
}
// Functions used for testing purposes
/// Returns object given as argument.
///
/// This API function is used for testing. One should not rely on its presence
/// in plugins.
///
/// @param[in] obj Object to return.
///
/// @return its argument.
Object nvim__id(Object obj)
{
return copy_object(obj, NULL);
}
/// Returns array given as argument.
///
/// This API function is used for testing. One should not rely on its presence
/// in plugins.
///
/// @param[in] arr Array to return.
///
/// @return its argument.
Array nvim__id_array(Array arr)
{
return copy_array(arr, NULL);
}
/// Returns dictionary given as argument.
///
/// This API function is used for testing. One should not rely on its presence
/// in plugins.
///
/// @param[in] dct Dictionary to return.
///
/// @return its argument.
Dictionary nvim__id_dictionary(Dictionary dct)
{
return copy_dictionary(dct, NULL);
}
/// Returns floating-point value given as argument.
///
/// This API function is used for testing. One should not rely on its presence
/// in plugins.
///
/// @param[in] flt Value to return.
///
/// @return its argument.
Float nvim__id_float(Float flt)
{
return flt;
}
/// Gets internal stats.
///
/// @return Map of various internal stats.
Dictionary nvim__stats(void)
{
Dictionary rv = ARRAY_DICT_INIT;
PUT(rv, "fsync", INTEGER_OBJ(g_stats.fsync));
PUT(rv, "log_skip", INTEGER_OBJ(g_stats.log_skip));
PUT(rv, "lua_refcount", INTEGER_OBJ(nlua_get_global_ref_count()));
PUT(rv, "redraw", INTEGER_OBJ(g_stats.redraw));
PUT(rv, "arena_alloc_count", INTEGER_OBJ((Integer)arena_alloc_count));
return rv;
}
/// Gets a list of dictionaries representing attached UIs.
///
/// @return Array of UI dictionaries, each with these keys:
/// - "height" Requested height of the UI
/// - "width" Requested width of the UI
/// - "rgb" true if the UI uses RGB colors (false implies |cterm-colors|)
/// - "ext_..." Requested UI extensions, see |ui-option|
/// - "chan" |channel-id| of remote UI
Array nvim_list_uis(void)
FUNC_API_SINCE(4)
{
return ui_array();
}
/// Gets the immediate children of process `pid`.
///
/// @return Array of child process ids, empty if process not found.
Array nvim_get_proc_children(Integer pid, Error *err)
FUNC_API_SINCE(4)
{
Array rvobj = ARRAY_DICT_INIT;
int *proc_list = NULL;
VALIDATE_INT((pid > 0 && pid <= INT_MAX), "pid", pid, {
goto end;
});
size_t proc_count;
int rv = os_proc_children((int)pid, &proc_list, &proc_count);
if (rv == 2) {
// syscall failed (possibly because of kernel options), try shelling out.
DLOG("fallback to vim._os_proc_children()");
MAXSIZE_TEMP_ARRAY(a, 1);
ADD(a, INTEGER_OBJ(pid));
Object o = NLUA_EXEC_STATIC("return vim._os_proc_children(...)", a, err);
if (o.type == kObjectTypeArray) {
rvobj = o.data.array;
} else if (!ERROR_SET(err)) {
api_set_error(err, kErrorTypeException,
"Failed to get process children. pid=%" PRId64 " error=%d",
pid, rv);
}
goto end;
}
for (size_t i = 0; i < proc_count; i++) {
ADD(rvobj, INTEGER_OBJ(proc_list[i]));
}
end:
xfree(proc_list);
return rvobj;
}
/// Gets info describing process `pid`.
///
/// @return Map of process properties, or NIL if process not found.
Object nvim_get_proc(Integer pid, Error *err)
FUNC_API_SINCE(4)
{
Object rvobj = OBJECT_INIT;
rvobj.data.dictionary = (Dictionary)ARRAY_DICT_INIT;
rvobj.type = kObjectTypeDictionary;
VALIDATE_INT((pid > 0 && pid <= INT_MAX), "pid", pid, {
return NIL;
});
#ifdef MSWIN
rvobj.data.dictionary = os_proc_info((int)pid);
if (rvobj.data.dictionary.size == 0) { // Process not found.
return NIL;
}
#else
// Cross-platform process info APIs are miserable, so use `ps` instead.
MAXSIZE_TEMP_ARRAY(a, 1);
ADD(a, INTEGER_OBJ(pid));
Object o = NLUA_EXEC_STATIC("return vim._os_proc_info(...)", a, err);
if (o.type == kObjectTypeArray && o.data.array.size == 0) {
return NIL; // Process not found.
} else if (o.type == kObjectTypeDictionary) {
rvobj.data.dictionary = o.data.dictionary;
} else if (!ERROR_SET(err)) {
api_set_error(err, kErrorTypeException,
"Failed to get process info. pid=%" PRId64, pid);
}
#endif
return rvobj;
}
/// Selects an item in the completion popup menu.
///
/// If neither |ins-completion| nor |cmdline-completion| popup menu is active
/// this API call is silently ignored.
/// Useful for an external UI using |ui-popupmenu| to control the popup menu with the mouse.
/// Can also be used in a mapping; use <Cmd> |:map-cmd| or a Lua mapping to ensure the mapping
/// doesn't end completion mode.
///
/// @param item Index (zero-based) of the item to select. Value of -1 selects nothing
/// and restores the original text.
/// @param insert For |ins-completion|, whether the selection should be inserted in the buffer.
/// Ignored for |cmdline-completion|.
/// @param finish Finish the completion and dismiss the popup menu. Implies {insert}.
/// @param opts Optional parameters. Reserved for future use.
/// @param[out] err Error details, if any
void nvim_select_popupmenu_item(Integer item, Boolean insert, Boolean finish, Dictionary opts,
Error *err)
FUNC_API_SINCE(6)
{
VALIDATE((opts.size == 0), "%s", "opts dict isn't empty", {
return;
});
if (finish) {
insert = true;
}
pum_ext_select_item((int)item, insert, finish);
}
/// NB: if your UI doesn't use hlstate, this will not return hlstate first time
Array nvim__inspect_cell(Integer grid, Integer row, Integer col, Arena *arena, Error *err)
{
Array ret = ARRAY_DICT_INIT;
// TODO(bfredl): if grid == 0 we should read from the compositor's buffer.
// The only problem is that it does not yet exist.
ScreenGrid *g = &default_grid;
if (grid == pum_grid.handle) {
g = &pum_grid;
} else if (grid > 1) {
win_T *wp = get_win_by_grid_handle((handle_T)grid);
VALIDATE_INT((wp != NULL && wp->w_grid_alloc.chars != NULL), "grid handle", grid, {
return ret;
});
g = &wp->w_grid_alloc;
}
if (row < 0 || row >= g->rows
|| col < 0 || col >= g->cols) {
return ret;
}
ret = arena_array(arena, 3);
size_t off = g->line_offset[(size_t)row] + (size_t)col;
ADD_C(ret, STRING_OBJ(cstr_as_string((char *)g->chars[off])));
int attr = g->attrs[off];
ADD_C(ret, DICTIONARY_OBJ(hl_get_attr_by_id(attr, true, arena, err)));
// will not work first time
if (!highlight_use_hlstate()) {
ADD_C(ret, ARRAY_OBJ(hl_inspect(attr)));
}
return ret;
}
void nvim__screenshot(String path)
FUNC_API_FAST
{
ui_call_screenshot(path);
}
Object nvim__unpack(String str, Error *err)
FUNC_API_FAST
{
return unpack(str.data, str.size, err);
}
/// Deletes an uppercase/file named mark. See |mark-motions|.
///
/// @note fails with error if a lowercase or buffer local named mark is used.
/// @param name Mark name
/// @return true if the mark was deleted, else false.
/// @see |nvim_buf_del_mark()|
/// @see |nvim_get_mark()|
Boolean nvim_del_mark(String name, Error *err)
FUNC_API_SINCE(8)
{
bool res = false;
VALIDATE_S((name.size == 1), "mark name (must be a single char)", name.data, {
return res;
});
// Only allow file/uppercase marks
// TODO(muniter): Refactor this ASCII_ISUPPER macro to a proper function
VALIDATE_S((ASCII_ISUPPER(*name.data) || ascii_isdigit(*name.data)),
"mark name (must be file/uppercase)", name.data, {
return res;
});
res = set_mark(NULL, name, 0, 0, err);
return res;
}
/// Return a tuple (row, col, buffer, buffername) representing the position of
/// the uppercase/file named mark. See |mark-motions|.
///
/// Marks are (1,0)-indexed. |api-indexing|
///
/// @note fails with error if a lowercase or buffer local named mark is used.
/// @param name Mark name
/// @param opts Optional parameters. Reserved for future use.
/// @return 4-tuple (row, col, buffer, buffername), (0, 0, 0, '') if the mark is
/// not set.
/// @see |nvim_buf_set_mark()|
/// @see |nvim_del_mark()|
Array nvim_get_mark(String name, Dictionary opts, Error *err)
FUNC_API_SINCE(8)
{
Array rv = ARRAY_DICT_INIT;
VALIDATE_S((name.size == 1), "mark name (must be a single char)", name.data, {
return rv;
});
VALIDATE_S((ASCII_ISUPPER(*name.data) || ascii_isdigit(*name.data)),
"mark name (must be file/uppercase)", name.data, {
return rv;
});
xfmark_T *mark = mark_get_global(false, *name.data); // false avoids loading the mark buffer
pos_T pos = mark->fmark.mark;
bool allocated = false;
int bufnr;
char *filename;
// Marks are from an open buffer it fnum is non zero
if (mark->fmark.fnum != 0) {
bufnr = mark->fmark.fnum;
filename = buflist_nr2name(bufnr, true, true);
allocated = true;
// Marks comes from shada
} else {
filename = mark->fname;
bufnr = 0;
}
bool exists = filename != NULL;
Integer row;
Integer col;
if (!exists || pos.lnum <= 0) {
if (allocated) {
xfree(filename);
allocated = false;
}
filename = "";
bufnr = 0;
row = 0;
col = 0;
} else {
row = pos.lnum;
col = pos.col;
}
ADD(rv, INTEGER_OBJ(row));
ADD(rv, INTEGER_OBJ(col));
ADD(rv, INTEGER_OBJ(bufnr));
ADD(rv, STRING_OBJ(cstr_to_string(filename)));
if (allocated) {
xfree(filename);
}
return rv;
}
/// Evaluates statusline string.
///
/// @param str Statusline string (see 'statusline').
/// @param opts Optional parameters.
/// - winid: (number) |window-ID| of the window to use as context for statusline.
/// - maxwidth: (number) Maximum width of statusline.
/// - fillchar: (string) Character to fill blank spaces in the statusline (see
/// 'fillchars'). Treated as single-width even if it isn't.
/// - highlights: (boolean) Return highlight information.
/// - use_winbar: (boolean) Evaluate winbar instead of statusline.
/// - use_tabline: (boolean) Evaluate tabline instead of statusline. When true, {winid}
/// is ignored. Mutually exclusive with {use_winbar}.
///
/// @param[out] err Error details, if any.
/// @return Dictionary containing statusline information, with these keys:
/// - str: (string) Characters that will be displayed on the statusline.
/// - width: (number) Display width of the statusline.
/// - highlights: Array containing highlight information of the statusline. Only included when
/// the "highlights" key in {opts} is true. Each element of the array is a
/// |Dictionary| with these keys:
/// - start: (number) Byte index (0-based) of first character that uses the highlight.
/// - group: (string) Name of highlight group.
Dictionary nvim_eval_statusline(String str, Dict(eval_statusline) *opts, Error *err)
FUNC_API_SINCE(8) FUNC_API_FAST
{
Dictionary result = ARRAY_DICT_INIT;
int maxwidth;
int fillchar = 0;
Window window = 0;
bool use_winbar = false;
bool use_tabline = false;
bool highlights = false;
if (str.size < 2 || memcmp(str.data, "%!", 2) != 0) {
const char *const errmsg = check_stl_option(str.data);
VALIDATE(!errmsg, "%s", errmsg, {
return result;
});
}
if (HAS_KEY(opts->winid)) {
VALIDATE_T("winid", kObjectTypeInteger, opts->winid.type, {
return result;
});
window = (Window)opts->winid.data.integer;
}
if (HAS_KEY(opts->fillchar)) {
VALIDATE_T("fillchar", kObjectTypeString, opts->fillchar.type, {
return result;
});
VALIDATE_EXP((opts->fillchar.data.string.size != 0
&& ((size_t)utf_ptr2len(opts->fillchar.data.string.data)
== opts->fillchar.data.string.size)),
"fillchar", "single character", NULL, {
return result;
});
fillchar = utf_ptr2char(opts->fillchar.data.string.data);
}
if (HAS_KEY(opts->highlights)) {
highlights = api_object_to_bool(opts->highlights, "highlights", false, err);
if (ERROR_SET(err)) {
return result;
}
}
if (HAS_KEY(opts->use_winbar)) {
use_winbar = api_object_to_bool(opts->use_winbar, "use_winbar", false, err);
if (ERROR_SET(err)) {
return result;
}
}
if (HAS_KEY(opts->use_tabline)) {
use_tabline = api_object_to_bool(opts->use_tabline, "use_tabline", false, err);
if (ERROR_SET(err)) {
return result;
}
}
VALIDATE(!(use_winbar && use_tabline), "%s", "Cannot use both 'use_winbar' and 'use_tabline'", {
return result;
});
win_T *wp, *ewp;
if (use_tabline) {
wp = NULL;
ewp = curwin;
fillchar = ' ';
} else {
wp = find_window_by_handle(window, err);
if (wp == NULL) {
api_set_error(err, kErrorTypeException, "unknown winid %d", window);
return result;
}
ewp = wp;
if (fillchar == 0) {
if (use_winbar) {
fillchar = wp->w_p_fcs_chars.wbr;
} else {
int attr;
fillchar = fillchar_status(&attr, wp);
}
}
}
if (HAS_KEY(opts->maxwidth)) {
VALIDATE_T("maxwidth", kObjectTypeInteger, opts->maxwidth.type, {
return result;
});
maxwidth = (int)opts->maxwidth.data.integer;
} else {
maxwidth = (use_tabline || (!use_winbar && global_stl_height() > 0)) ? Columns : wp->w_width;
}
char buf[MAXPATHL];
stl_hlrec_t *hltab;
stl_hlrec_t **hltab_ptr = highlights ? &hltab : NULL;
// Temporarily reset 'cursorbind' to prevent side effects from moving the cursor away and back.
int p_crb_save = ewp->w_p_crb;
ewp->w_p_crb = false;
int width = build_stl_str_hl(ewp,
buf,
sizeof(buf),
str.data,
NULL,
0,
fillchar,
maxwidth,
hltab_ptr,
NULL,
NULL);
PUT(result, "width", INTEGER_OBJ(width));
// Restore original value of 'cursorbind'
ewp->w_p_crb = p_crb_save;
if (highlights) {
Array hl_values = ARRAY_DICT_INIT;
const char *grpname;
char user_group[6];
// If first character doesn't have a defined highlight,
// add the default highlight at the beginning of the highlight list
if (hltab->start == NULL || (hltab->start - buf) != 0) {
Dictionary hl_info = ARRAY_DICT_INIT;
grpname = get_default_stl_hl(wp, use_winbar);
PUT(hl_info, "start", INTEGER_OBJ(0));
PUT(hl_info, "group", CSTR_TO_OBJ(grpname));
ADD(hl_values, DICTIONARY_OBJ(hl_info));
}
for (stl_hlrec_t *sp = hltab; sp->start != NULL; sp++) {
Dictionary hl_info = ARRAY_DICT_INIT;
PUT(hl_info, "start", INTEGER_OBJ(sp->start - buf));
if (sp->userhl == 0) {
grpname = get_default_stl_hl(wp, use_winbar);
} else if (sp->userhl < 0) {
grpname = syn_id2name(-sp->userhl);
} else {
snprintf(user_group, sizeof(user_group), "User%d", sp->userhl);
grpname = user_group;
}
PUT(hl_info, "group", CSTR_TO_OBJ(grpname));
ADD(hl_values, DICTIONARY_OBJ(hl_info));
}
PUT(result, "highlights", ARRAY_OBJ(hl_values));
}
PUT(result, "str", CSTR_TO_OBJ(buf));
return result;
}
void nvim_error_event(uint64_t channel_id, Integer lvl, String data)
FUNC_API_REMOTE_ONLY
{
// TODO(bfredl): consider printing message to user, as will be relevant
// if we fork nvim processes as async workers
ELOG("async error on channel %" PRId64 ": %s", channel_id, data.size ? data.data : "");
}
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