/** Command completion of the commands
*
* @param name String to match, changed to hint on exit
* @param size Input buffer size
*
* @return Number of found matches
*
*/
NO_TRACE static int cmdtab_compl(char *input, size_t size, indev_t *indev,
hints_enum_func_t hints_enum)
{
const char *name = input;
size_t found = 0;
/*
* Maximum Match Length: Length of longest matching common
* substring in case more than one match is found.
*/
size_t max_match_len = size;
size_t max_match_len_tmp = size;
void *pos = NULL;
const char *hint;
const char *help;
char *output = malloc(MAX_CMDLINE, 0);
size_t hints_to_show = MAX_TAB_HINTS - 1;
size_t total_hints_shown = 0;
bool continue_showing_hints = true;
output[0] = 0;
while ((hint = hints_enum(name, NULL, &pos))) {
if ((found == 0) || (str_length(hint) > str_length(output)))
str_cpy(output, MAX_CMDLINE, hint);
found++;
}
/*
* If the number of possible completions is more than MAX_TAB_HINTS,
* ask the user whether to display them or not.
*/
if (found > MAX_TAB_HINTS) {
printf("\n");
continue_showing_hints =
console_prompt_display_all_hints(indev, found);
}
if ((found > 1) && (str_length(output) != 0)) {
printf("\n");
pos = NULL;
while ((hint = hints_enum(name, &help, &pos))) {
if (continue_showing_hints) {
if (help)
printf("%s%s (%s)\n", name, hint, help);
else
printf("%s%s\n", name, hint);
--hints_to_show;
++total_hints_shown;
if ((hints_to_show == 0) && (total_hints_shown != found)) {
/* Ask user to continue */
continue_showing_hints =
console_prompt_more_hints(indev, &hints_to_show);
}
}
for (max_match_len_tmp = 0;
(output[max_match_len_tmp] ==
hint[max_match_len_tmp]) &&
(max_match_len_tmp < max_match_len); ++max_match_len_tmp);
max_match_len = max_match_len_tmp;
}
/* Keep only the characters common in all completions */
output[max_match_len] = 0;
}
if (found > 0)
str_cpy(input, size, output);
free(output);
return found;
}
/** Symtab completion
*
* @param input Search string, completes to symbol name
* @param size Input buffer size
*
* @return 0 - nothing found, 1 - success, >1 print duplicates
*
*/
int symtab_compl(char *input, size_t size, indev_t *indev)
{
#ifdef CONFIG_SYMTAB
const char *name = input;
/* Allow completion of pointers */
if ((name[0] == '*') || (name[0] == '&'))
name++;
/* Do not print all symbols */
if (str_length(name) == 0)
return 0;
size_t found = 0;
size_t pos = 0;
const char *hint;
char output[MAX_SYMBOL_NAME];
/*
* Maximum Match Length: Length of longest matching common substring in
* case more than one match is found.
*/
size_t max_match_len = size;
size_t max_match_len_tmp = size;
size_t input_len = str_length(input);
char *sym_name;
size_t hints_to_show = MAX_TAB_HINTS - 1;
size_t total_hints_shown = 0;
bool continue_showing_hints = true;
output[0] = 0;
while ((hint = symtab_search_one(name, &pos)))
pos++;
pos = 0;
while ((hint = symtab_search_one(name, &pos))) {
if ((found == 0) || (str_length(output) > str_length(hint)))
str_cpy(output, MAX_SYMBOL_NAME, hint);
pos++;
found++;
}
/*
* If the number of possible completions is more than MAX_TAB_HINTS,
* ask the user whether to display them or not.
*/
if (found > MAX_TAB_HINTS) {
printf("\n");
continue_showing_hints =
console_prompt_display_all_hints(indev, found);
}
if ((found > 1) && (str_length(output) != 0)) {
printf("\n");
pos = 0;
while (symtab_search_one(name, &pos)) {
sym_name = symbol_table[pos].symbol_name;
pos++;
if (continue_showing_hints) {
/* We are still showing hints */
printf("%s\n", sym_name);
--hints_to_show;
++total_hints_shown;
if ((hints_to_show == 0) && (total_hints_shown != found)) {
/* Ask the user to continue */
continue_showing_hints =
console_prompt_more_hints(indev, &hints_to_show);
}
}
for (max_match_len_tmp = 0;
(output[max_match_len_tmp] ==
sym_name[input_len + max_match_len_tmp]) &&
(max_match_len_tmp < max_match_len); ++max_match_len_tmp);
max_match_len = max_match_len_tmp;
}
/* Keep only the characters common in all completions */
output[max_match_len] = 0;
}
if (found > 0)
str_cpy(input, size, output);
return found;
#else
return 0;
#endif
}
