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commandline: allow to get/set cursor position relative to token/process/job

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With a command line like

	a | b <cursor> | c

 "commandline -C 0 --current-process" will place the cursor just left of "b".
This commit is contained in:
Johannes Altmanninger 2021-06-23 08:26:21 +02:00
parent 016569905e
commit be0b451207
2 changed files with 7 additions and 5 deletions
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2
doc_src/cmds/commandline.rst
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@ -21,7 +21,7 @@ With ``CMD`` specified, the command line buffer is erased and replaced with the
The following options are available:
- ``-C`` or ``--cursor`` set or get the current cursor position, not the contents of the buffer. If no argument is given, the current cursor position is printed, otherwise the argument is interpreted as the new cursor position.
- ``-C`` or ``--cursor`` set or get the current cursor position, not the contents of the buffer. If no argument is given, the current cursor position is printed, otherwise the argument is interpreted as the new cursor position. If one of the options ``-j``, ``-p`` or ``-t`` is given, the position is relative to the respective substring instead of the entire command line buffer.
- ``-f`` or ``--function`` causes any additional arguments to be interpreted as input functions, and puts them into the queue, so that they will be read before any additional actual key presses are. This option cannot be combined with any other option. See :ref:`bind <cmd-bind>` for a list of input functions.

10
src/builtin_commandline.cpp
View file

@ -344,7 +344,9 @@ maybe_t<int> builtin_commandline(parser_t &parser, io_streams_t &streams, const
}
if ((buffer_part || tokenize || cut_at_cursor) &&
(cursor_mode || line_mode || search_mode || paging_mode)) {
(cursor_mode || line_mode || search_mode || paging_mode) &&
// Special case - we allow to get/set cursor position relative to the process/job/token.
!(buffer_part && cursor_mode)) {
streams.err.append_format(BUILTIN_ERR_COMBO, argv[0]);
builtin_print_error_trailer(parser, streams.err, cmd);
return STATUS_INVALID_ARGS;
@ -414,7 +416,7 @@ maybe_t<int> builtin_commandline(parser_t &parser, io_streams_t &streams, const
if (cursor_mode) {
if (argc - w.woptind) {
long new_pos = fish_wcstol(argv[w.woptind]);
long new_pos = fish_wcstol(argv[w.woptind]) + (begin - current_buffer);
if (errno) {
streams.err.append_format(BUILTIN_ERR_NOT_NUMBER, cmd, argv[w.woptind]);
builtin_print_error_trailer(parser, streams.err, cmd);
@ -425,8 +427,8 @@ maybe_t<int> builtin_commandline(parser_t &parser, io_streams_t &streams, const
std::max(0L, std::min(new_pos, static_cast<long>(std::wcslen(current_buffer))));
reader_set_buffer(current_buffer, static_cast<size_t>(new_pos));
} else {
streams.out.append_format(L"%lu\n",
static_cast<unsigned long>(reader_get_cursor_pos()));
size_t pos = reader_get_cursor_pos() - (begin - current_buffer);
streams.out.append_format(L"%lu\n", static_cast<unsigned long>(pos));
}
return STATUS_CMD_OK;
}