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reader_readline to return maybe_t<wcstring>

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Stop returning a raw pointer.
This commit is contained in:
ridiculousfish 2019-02-24 13:59:49 -08:00
parent 47f1b026e6
commit 0a29eb3142
3 changed files with 10 additions and 12 deletions
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12
src/builtin_read.cpp
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@ -202,7 +202,6 @@ static int read_interactive(wcstring &buff, int nchars, bool shell, bool silent,
const wchar_t *prompt, const wchar_t *right_prompt,
const wchar_t *commandline) {
int exit_res = STATUS_CMD_OK;
const wchar_t *line;
// TODO: rationalize this.
const auto &vars = env_stack_t::principal();
@ -227,17 +226,16 @@ static int read_interactive(wcstring &buff, int nchars, bool shell, bool silent,
proc_push_interactive(1);
event_fire_generic(L"fish_prompt");
line = reader_readline(nchars);
auto mline = reader_readline(nchars);
proc_pop_interactive();
if (line) {
if (0 < nchars && (size_t)nchars < wcslen(line)) {
if (mline) {
buff = mline.acquire();
if (nchars > 0 && (size_t)nchars < buff.size()) {
// Line may be longer than nchars if a keybinding used `commandline -i`
// note: we're deliberately throwing away the tail of the commandline.
// It shouldn't be unread because it was produced with `commandline -i`,
// not typed.
buff = wcstring(line, nchars);
} else {
buff = wcstring(line);
buff.resize(nchars);
}
} else {
exit_res = STATUS_CMD_ERROR;

8
src/reader.cpp
View file

@ -2373,12 +2373,12 @@ static int read_i() {
// Put buff in temporary string and clear buff, so that we can handle a call to
// reader_set_buffer during evaluation.
const wchar_t *tmp = reader_readline(0);
maybe_t<wcstring> tmp = reader_readline(0);
if (shell_is_exiting()) {
handle_end_loop();
} else if (tmp) {
const wcstring command = tmp;
const wcstring command = tmp.acquire();
update_buff_pos(&data->command_line, 0);
data->command_line.text.clear();
data->command_line_changed(&data->command_line);
@ -2448,7 +2448,7 @@ static bool text_ends_in_comment(const wcstring &text) {
return token.type == TOK_COMMENT;
}
const wchar_t *reader_readline(int nchars) {
maybe_t<wcstring> reader_readline(int nchars) {
wint_t c;
int last_char = 0;
size_t yank_len = 0;
@ -3350,7 +3350,7 @@ const wchar_t *reader_readline(int nchars) {
outputter_t::stdoutput().set_color(rgb_color_t::reset(), rgb_color_t::reset());
}
return finished ? data->command_line.text.c_str() : NULL;
return finished ? maybe_t<wcstring>{data->command_line.text} : none();
}
bool jump(jump_direction_t dir, jump_precision_t precision, editable_line_t *el, wchar_t target) {

2
src/reader.h
View file

@ -144,7 +144,7 @@ bool reader_thread_job_is_stale();
/// characters even if a full line has not yet been read. Note: the returned value may be longer
/// than nchars if a single keypress resulted in multiple characters being inserted into the
/// commandline.
const wchar_t *reader_readline(int nchars);
maybe_t<wcstring> reader_readline(int nchars);
/// Push a new reader environment.
void reader_push(const wcstring &name);