static unsigned char
complete(EditLine *el, int ch)
{
DIR *dd = opendir(".");
struct dirent *dp;
const wchar_t *ptr;
char *buf, *bptr;
const LineInfoW *lf = el_wline(el);
int len, mblen, i;
unsigned char res = 0;
wchar_t dir[1024];
/* Find the last word */
for (ptr = lf->cursor -1; !iswspace(*ptr) && ptr > lf->buffer; --ptr)
continue;
len = lf->cursor - ++ptr;
/* Convert last word to multibyte encoding, so we can compare to it */
wctomb(NULL, 0); /* Reset shift state */
mblen = MB_LEN_MAX * len + 1;
buf = bptr = malloc(mblen);
if (buf == NULL)
err(1, "malloc");
for (i = 0; i < len; ++i) {
/* Note: really should test for -1 return from wctomb */
bptr += wctomb(bptr, ptr[i]);
}
*bptr = 0; /* Terminate multibyte string */
mblen = bptr - buf;
/* Scan directory for matching name */
for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
if (mblen > strlen(dp->d_name))
continue;
if (strncmp(dp->d_name, buf, mblen) == 0) {
mbstowcs(dir, &dp->d_name[mblen],
sizeof(dir) / sizeof(*dir));
if (el_winsertstr(el, dir) == -1)
res = CC_ERROR;
else
res = CC_REFRESH;
break;
}
}
closedir(dd);
free(buf);
return res;
}
/*
* Complete the word at or before point,
* 'what_to_do' says what to do with the completion.
* \t means do standard completion.
* `?' means list the possible completions.
* `*' means insert all of the possible completions.
* `!' means to do standard completion, and list all possible completions if
* there is more than one.
*
* Note: '*' support is not implemented
* '!' could never be invoked
*/
int
fn_complete(EditLine *el,
char *(*complet_func)(const char *, int),
char **(*attempted_completion_function)(const char *, int, int),
const wchar_t *word_break, const wchar_t *special_prefixes,
const char *(*app_func)(const char *), size_t query_items,
int *completion_type, int *over, int *point, int *end)
{
const LineInfoW *li;
wchar_t *temp;
char **matches;
const wchar_t *ctemp;
size_t len;
int what_to_do = '\t';
int retval = CC_NORM;
if (el->el_state.lastcmd == el->el_state.thiscmd)
what_to_do = '?';
/* readline's rl_complete() has to be told what we did... */
if (completion_type != NULL)
*completion_type = what_to_do;
if (!complet_func)
complet_func = fn_filename_completion_function;
if (!app_func)
app_func = append_char_function;
/* We now look backwards for the start of a filename/variable word */
li = el_wline(el);
ctemp = li->cursor;
while (ctemp > li->buffer
&& !wcschr(word_break, ctemp[-1])
&& (!special_prefixes || !wcschr(special_prefixes, ctemp[-1]) ) )
ctemp--;
len = (size_t)(li->cursor - ctemp);
temp = el_malloc((len + 1) * sizeof(*temp));
(void)wcsncpy(temp, ctemp, len);
temp[len] = '\0';
/* these can be used by function called in completion_matches() */
/* or (*attempted_completion_function)() */
if (point != NULL)
*point = (int)(li->cursor - li->buffer);
if (end != NULL)
*end = (int)(li->lastchar - li->buffer);
if (attempted_completion_function) {
int cur_off = (int)(li->cursor - li->buffer);
matches = (*attempted_completion_function)(
ct_encode_string(temp, &el->el_scratch),
cur_off - (int)len, cur_off);
} else
matches = NULL;
if (!attempted_completion_function ||
(over != NULL && !*over && !matches))
matches = completion_matches(
ct_encode_string(temp, &el->el_scratch), complet_func);
if (over != NULL)
*over = 0;
if (matches) {
int i;
size_t matches_num, maxlen, match_len, match_display=1;
retval = CC_REFRESH;
/*
* Only replace the completed string with common part of
* possible matches if there is possible completion.
*/
if (matches[0][0] != '\0') {
el_deletestr(el, (int) len);
el_winsertstr(el,
ct_decode_string(matches[0], &el->el_scratch));
}
if (matches[2] == NULL &&
(matches[1] == NULL || strcmp(matches[0], matches[1]) == 0)) {
/*
* We found exact match. Add a space after
* it, unless we do filename completion and the
* object is a directory.
*/
el_winsertstr(el,
ct_decode_string((*app_func)(matches[0]),
&el->el_scratch));
} else if (what_to_do == '!' || what_to_do == '?') {
/*
* More than one match and requested to list possible
* matches.
*/
for(i = 1, maxlen = 0; matches[i]; i++) {
match_len = strlen(matches[i]);
if (match_len > maxlen)
maxlen = match_len;
}
/* matches[1] through matches[i-1] are available */
matches_num = (size_t)(i - 1);
/* newline to get on next line from command line */
(void)fprintf(el->el_outfile, "\n");
/*
* If there are too many items, ask user for display
* confirmation.
*/
if (matches_num > query_items) {
(void)fprintf(el->el_outfile,
"Display all %zu possibilities? (y or n) ",
matches_num);
(void)fflush(el->el_outfile);
if (getc(stdin) != 'y')
match_display = 0;
(void)fprintf(el->el_outfile, "\n");
}
if (match_display) {
/*
* Interface of this function requires the
* strings be matches[1..num-1] for compat.
* We have matches_num strings not counting
* the prefix in matches[0], so we need to
* add 1 to matches_num for the call.
*/
fn_display_match_list(el, matches,
matches_num+1, maxlen);
}
retval = CC_REDISPLAY;
} else if (matches[0][0]) {
/*
* There was some common match, but the name was
* not complete enough. Next tab will print possible
* completions.
*/
el_beep(el);
} else {
/* lcd is not a valid object - further specification */
/* is needed */
el_beep(el);
retval = CC_NORM;
}
/* free elements of array and the array itself */
for (i = 0; matches[i]; i++)
el_free(matches[i]);
el_free(matches);
matches = NULL;
}
el_free(temp);
return retval;
}