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https://github.com/neovim/neovim.git
synced 2025-02-25 18:55:25 -06:00
paste: handle vim.paste() failure
- Show error only once per "paste stream". - Drain remaining chunks until phase=3. - Lay groundwork for "cancel". - Constrain semantics of "cancel" to mean "client must stop"; it is unrelated to presence of error(s).
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@ -1206,7 +1206,7 @@ Dictionary nvim_get_namespaces(void)
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return retval;
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}
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/// Paste
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/// Pastes at cursor, in any mode.
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///
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/// Invokes the `vim.paste` handler, which handles each mode appropriately.
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/// Sets redo/undo. Faster than |nvim_input()|.
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@ -1219,29 +1219,44 @@ Dictionary nvim_get_namespaces(void)
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/// - 2: continues the paste (zero or more times)
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/// - 3: ends the paste (exactly once)
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/// @param[out] err Error details, if any
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/// @return true if paste should continue, false if paste was canceled
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/// @return
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/// - true: Client may continue pasting.
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/// - false: Client must cancel the paste.
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Boolean nvim_paste(String data, Integer phase, Error *err)
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FUNC_API_SINCE(6)
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{
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static bool draining = false;
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bool cancel = false;
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if (phase < -1 || phase > 3) {
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api_set_error(err, kErrorTypeValidation, "Invalid phase: %"PRId64, phase);
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return false;
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}
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Array args = ARRAY_DICT_INIT;
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Object rv = OBJECT_INIT;
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if (phase == -1 || phase == 1) { // Start of paste-stream.
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draining = false;
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} else if (draining) {
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// Skip remaining chunks. Report error only once per "stream".
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goto theend;
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}
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Array lines = string_to_array(data);
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ADD(args, ARRAY_OBJ(lines));
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ADD(args, INTEGER_OBJ(phase));
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rv = nvim_execute_lua(STATIC_CSTR_AS_STRING("return vim._paste(...)"), args,
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err);
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if (ERROR_SET(err)) {
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draining = true;
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goto theend;
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}
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if (!(State & CMDLINE) && !(State & INSERT) && (phase == -1 || phase == 1)) {
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ResetRedobuff();
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AppendCharToRedobuff('a'); // Dot-repeat.
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}
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Array lines = string_to_array(data);
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Array args = ARRAY_DICT_INIT;
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ADD(args, ARRAY_OBJ(lines));
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ADD(args, INTEGER_OBJ(phase));
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Object rv
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= nvim_execute_lua(STATIC_CSTR_AS_STRING("return vim._paste(...)"),
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args, err);
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// Abort paste if handler does not return true.
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bool ok = !ERROR_SET(err)
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&& (rv.type == kObjectTypeBoolean && rv.data.boolean);
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if (ok && !(State & CMDLINE)) { // Dot-repeat.
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// vim.paste() decides if client should cancel. Errors do NOT cancel: we
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// want to drain remaining chunks (rather than divert them to main input).
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cancel = (rv.type != kObjectTypeBoolean || !rv.data.boolean);
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if (!cancel && !(State & CMDLINE)) { // Dot-repeat.
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for (size_t i = 0; i < lines.size; i++) {
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String s = lines.items[i].data.string;
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assert(data.size <= INT_MAX);
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@ -1252,20 +1267,21 @@ Boolean nvim_paste(String data, Integer phase, Error *err)
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}
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}
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}
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api_free_object(rv);
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api_free_array(args);
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if (!(State & CMDLINE) && !(State & INSERT) && (phase == -1 || phase == 3)) {
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AppendCharToRedobuff(ESC); // Dot-repeat.
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}
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if (phase == -1 || phase == 3) {
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theend:
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api_free_object(rv);
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api_free_array(args);
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if (cancel || phase == -1 || phase == 3) { // End of paste-stream.
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// XXX: Tickle main loop to ensure cursor is updated.
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loop_schedule_deferred(&main_loop, event_create(loop_dummy_event, 0));
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}
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return ok;
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return !cancel;
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}
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/// Puts text at cursor.
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/// Puts text at cursor, in any mode.
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///
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/// Compare |:put| and |p| which are always linewise.
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///
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@ -107,13 +107,12 @@ static void tinput_wait_enqueue(void **argv)
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const String keys = { .data = buf, .size = len };
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if (input->paste) {
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Error err = ERROR_INIT;
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Boolean rv = nvim_paste(keys, input->paste, &err);
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// Paste phase: "continue" (unless handler failed).
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input->paste = rv && !ERROR_SET(&err) ? 2 : 0;
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// Paste phase: "continue" (unless handler canceled).
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input->paste = !nvim_paste(keys, input->paste, &err)
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? 0 : (1 == input->paste ? 2 : input->paste);
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rbuffer_consumed(input->key_buffer, len);
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rbuffer_reset(input->key_buffer);
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if (ERROR_SET(&err)) {
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msg_putchar('\n');
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// TODO(justinmk): emsgf() does not display, why?
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msg_printf_attr(HL_ATTR(HLF_E)|MSG_HIST, "paste: %s", err.msg);
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api_clear_error(&err);
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@ -373,7 +372,7 @@ static bool handle_bracketed_paste(TermInput *input)
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tinput_flush(input, true);
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// Paste phase: "first-chunk".
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input->paste = 1;
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} else if (input->paste != 0) {
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} else if (input->paste) {
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// Paste phase: "last-chunk".
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input->paste = input->paste == 2 ? 3 : -1;
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tinput_flush(input, true);
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@ -395,6 +395,11 @@ describe('API', function()
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eq({0,3,6,0}, funcs.getpos('.'))
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eq(false, nvim('get_option', 'paste'))
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end)
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it('vim.paste() failure', function()
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nvim('execute_lua', 'vim._paste = (function(lines, phase) error("fake fail") end)', {})
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expect_err([[Error executing lua: %[string "%<nvim>"]:1: fake fail]],
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request, 'nvim_paste', 'line 1\nline 2\nline 3', 1)
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end)
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end)
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describe('nvim_put', function()
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@ -455,6 +460,25 @@ describe('API', function()
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eq({0,1,2,0}, funcs.getpos('.'))
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eq('', nvim('eval', 'v:errmsg'))
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end)
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it('detects charwise/linewise text (empty {type})', function()
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-- linewise (final item is empty string)
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nvim('put', {'line 1','line 2','line 3',''}, '', true, true)
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expect([[
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line 1
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line 2
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line 3]])
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eq({0,4,1,0}, funcs.getpos('.'))
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command('%delete _')
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-- charwise (final item is non-empty)
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nvim('put', {'line 1','line 2','line 3'}, '', true, true)
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expect([[
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line 1
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line 2
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line 3]])
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eq({0,3,6,0}, funcs.getpos('.'))
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end)
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end)
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describe('nvim_strwidth', function()
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@ -324,6 +324,57 @@ describe('TUI', function()
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expect_cmdline('"stuff 1 more typed"')
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end)
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it('paste: recovers from vim.paste() failure', function()
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child_session:request('nvim_execute_lua', [[
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_G.save_paste_fn = vim._paste
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vim._paste = function(lines, phase) error("fake fail") end
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]], {})
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-- Start pasting...
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feed_data('\027[200~line 1\nline 2\n')
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screen:expect{grid=[[
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{4:~ }|
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{4:~ }|
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{5: }|
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{8:paste: Error executing lua: [string "<nvim>"]:2: f}|
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{10:Press ENTER or type command to continue}{1: } |
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{3:-- TERMINAL --} |
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]]}
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-- Remaining chunks are discarded after vim.paste() failure.
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feed_data('line 3\nline 4\n')
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feed_data('line 5\nline 6\n')
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feed_data('line 7\nline 8\n')
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-- Stop paste.
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feed_data('\027[201~')
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feed_data('\n') -- <Enter>
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-- Editor should still work after failed/drained paste.
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feed_data('ityped input...\027\000')
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screen:expect{grid=[[
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typed input..{1:.} |
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{4:~ }|
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{4:~ }|
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{4:~ }|
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{5:[No Name] [+] }|
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{3:-- TERMINAL --} |
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]]}
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-- Paste works if vim.paste() succeeds.
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child_session:request('nvim_execute_lua', [[
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vim._paste = _G.save_paste_fn
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]], {})
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feed_data('\027[200~line A\nline B\n\027[201~')
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feed_data('\n') -- <Enter>
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screen:expect{grid=[[
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typed input...line A |
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line B |
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{1: } |
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{4:~ }|
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{5:[No Name] [+] }|
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{3:-- TERMINAL --} |
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]]}
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end)
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-- TODO
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it('paste: other modes', function()
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-- Other modes act like CTRL-C + paste.
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