void
line_edit_autocomplete::show_completions()
{
if (!m_completer_enabled)
return;
QString prefix; // substring on which the completion is to be based
int pos = cursorPosition();
int start = get_prefix_pos(text(), pos);
if (start>=0) {
prefix=text().mid(start, pos-start);
}
if (prefix.isEmpty()) {
// nothing to complete
if (popup->isVisible()) {
popup->clear();
popup->hide();
}
}
else {
QList<QString> completions = get_completions(prefix);
redisplay_popup(completions);
}
}
void
option_proposer::suggest_completion (const char *option_prefix)
{
auto_string_vec results;
get_completions (option_prefix, results);
for (unsigned i = 0; i < results.length (); i++)
printf ("%s\n", results[i]);
}
void completion(const char *buf, linenoiseCompletions *lc) {
int num_completions = 0;
char **completions = get_completions(global_ctx, buf, &num_completions);
for (int i = 0; i < num_completions; i++) {
linenoiseAddCompletion(lc, completions[i]);
free(completions[i]);
}
free(completions);
}
/**
* @brief Reads a whole line from the input channel.
* @note Input chars are echoed on the same stream object with the
* following exceptions:
* - DEL and BS are echoed as BS-SPACE-BS.
* - CR is echoed as CR-LF.
* - 0x4 is echoed as "^D".
* - Other values below 0x20 are not echoed.
* .
*
* @param[in] scfg pointer to a @p ShellConfig object
* @param[in] line pointer to the line buffer
* @param[in] size buffer maximum length
* @param[in] shp pointer to a @p ShellHistory object or NULL
* @return The operation status.
* @retval true the channel was reset or CTRL-D pressed.
* @retval false operation successful.
*
* @api
*/
bool shellGetLine(ShellConfig *scfg, char *line, unsigned size, ShellHistory *shp) {
char *p = line;
BaseSequentialStream *chp = scfg->sc_channel;
#if SHELL_USE_ESC_SEQ == TRUE
bool escape = false;
bool bracket = false;
#endif
#if SHELL_USE_HISTORY != TRUE
(void) shp;
#endif
while (true) {
char c;
if (streamRead(chp, (uint8_t *)&c, 1) == 0)
return true;
#if SHELL_USE_ESC_SEQ == TRUE
if (c == 27) {
escape = true;
continue;
}
if (escape) {
escape = false;
if (c == '[') {
escape = true;
bracket = true;
continue;
}
if (bracket) {
bracket = false;
#if SHELL_USE_HISTORY == TRUE
if (c == 'A') {
int len = get_history(shp, line, SHELL_HIST_DIR_BK);
if (len > 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
if (c == 'B') {
int len = get_history(shp, line, SHELL_HIST_DIR_FW);
if (len == 0)
*line = 0;
if (len >= 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
#endif
}
continue;
}
#endif
#if (SHELL_CMD_EXIT_ENABLED == TRUE) && !defined(_CHIBIOS_NIL_)
if (c == 4) {
chprintf(chp, "^D");
return true;
}
#endif
if ((c == 8) || (c == 127)) {
if (p != line) {
streamPut(chp, 0x08);
streamPut(chp, 0x20);
streamPut(chp, 0x08);
p--;
}
continue;
}
if (c == '\r') {
chprintf(chp, SHELL_NEWLINE_STR);
#if SHELL_USE_HISTORY == TRUE
save_history(shp, line, p - line);
#endif
*p = 0;
return false;
}
#if SHELL_USE_COMPLETION == TRUE
if (c == '\t') {
if (p < line + size - 1) {
*p = 0;
get_completions(scfg, line);
int len = process_completions(scfg, line, p - line, size);
if (len > 0) {
write_completions(scfg, line, p - line);
p = line + len;
}
}
continue;
}
#endif
#if SHELL_USE_HISTORY == TRUE
if (c == 14) {
int len = get_history(shp, line, SHELL_HIST_DIR_FW);
if (len == 0)
*line = 0;
if (len >= 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
if (c == 16) {
int len = get_history(shp, line, SHELL_HIST_DIR_BK);
if (len > 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
#endif
if (c < 0x20)
continue;
if (p < line + size - 1) {
streamPut(chp, c);
*p++ = (char)c;
}
}
}
