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paste: handle 'nomodifiable'

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- nvim_paste(): Marshal through luaeval() instead of nvim_execute_lua()
  because the latter seems to hide some errors.
- Handle 'nomodifiable' in `nvim_put()` explicitly.
- Require explicit `false` from `vim.paste()` in order to "cancel",
  otherwise assume true ("continue").
This commit is contained in:
Justin M. Keyes
2019-08-27 05:19:32 +02:00
parent 87389c6a57
commit 46aa254bf3
3 changed files with 75 additions and 12 deletions
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21
src/nvim/api/vim.c
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@@ -1211,6 +1211,11 @@ Dictionary nvim_get_namespaces(void)
/// Invokes the `vim.paste` handler, which handles each mode appropriately.
/// Sets redo/undo. Faster than |nvim_input()|.
///
/// 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 phase -1: paste in a single call (i.e. without streaming).
/// To "stream" a paste, call `nvim_paste` sequentially with
@@ -1233,6 +1238,7 @@ Boolean nvim_paste(String data, Integer phase, Error *err)
return false;
}
Array args = ARRAY_DICT_INIT;
Array args2 = ARRAY_DICT_INIT;
Object rv = OBJECT_INIT;
if (phase == -1 || phase == 1) { // Start of paste-stream.
draining = false;
@@ -1243,8 +1249,9 @@ Boolean nvim_paste(String data, Integer phase, Error *err)
Array lines = string_to_array(data);
ADD(args, ARRAY_OBJ(lines));
ADD(args, INTEGER_OBJ(phase));
rv = nvim_execute_lua(STATIC_CSTR_AS_STRING("return vim.paste(...)"), args,
err);
ADD(args2, STRING_OBJ(cstr_to_string("vim.paste(_A[1], _A[2])")));
ADD(args2, ARRAY_OBJ(args2));
rv = nvim_call_function(STATIC_CSTR_AS_STRING("luaeval"), args2, err);
if (ERROR_SET(err)) {
draining = true;
goto theend;
@@ -1255,7 +1262,7 @@ Boolean nvim_paste(String data, Integer phase, Error *err)
}
// 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);
cancel = (rv.type == kObjectTypeBoolean && !rv.data.boolean);
if (!cancel && !(State & CMDLINE)) { // Dot-repeat.
for (size_t i = 0; i < lines.size; i++) {
String s = lines.items[i].data.string;
@@ -1271,9 +1278,9 @@ Boolean nvim_paste(String data, Integer phase, Error *err)
AppendCharToRedobuff(ESC); // Dot-repeat.
}
theend:
api_free_object(rv);
api_free_array(args);
api_free_array(args2);
if (cancel || phase == -1 || phase == 3) { // End of paste-stream.
draining = false;
// XXX: Tickle main loop to ensure cursor is updated.
loop_schedule_deferred(&main_loop, event_create(loop_dummy_event, 0));
}
@@ -1303,6 +1310,10 @@ void nvim_put(ArrayOf(String) lines, String type, Boolean after,
api_set_error(err, kErrorTypeValidation, "Invalid type: '%s'", type.data);
goto cleanup;
}
if (!MODIFIABLE(curbuf)) {
api_set_error(err, kErrorTypeException, "Buffer is not 'modifiable'");
goto cleanup;
}
if (lines.size == 0) {
goto cleanup; // Nothing to do.
}