/* hist_command()
* process a history command
*/
libedit_private int
hist_command(EditLine *el, int argc, const wchar_t **argv)
{
const wchar_t *str;
int num;
HistEventW ev;
if (el->el_history.ref == NULL)
return -1;
if (argc == 1 || wcscmp(argv[1], L"list") == 0) {
/* List history entries */
for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el))
(void) fprintf(el->el_outfile, "%d %s",
el->el_history.ev.num, ct_encode_string(str, &el->el_scratch));
return 0;
}
if (argc != 3)
return -1;
num = (int)wcstol(argv[2], NULL, 0);
if (wcscmp(argv[1], L"size") == 0)
return history_w(el->el_history.ref, &ev, H_SETSIZE, num);
if (wcscmp(argv[1], L"unique") == 0)
return history_w(el->el_history.ref, &ev, H_SETUNIQUE, num);
return -1;
}
/*
* 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 Char *word_break, const Char *special_prefixes,
const char *(*app_func)(const char *), size_t query_items,
int *completion_type, int *over, int *point, int *end)
{
const TYPE(LineInfo) *li;
Char *temp;
char **matches;
const Char *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 = FUN(el,line)(el);
ctemp = li->cursor;
while (ctemp > li->buffer
&& !Strchr(word_break, ctemp[-1])
&& (!special_prefixes || !Strchr(special_prefixes, ctemp[-1]) ) )
ctemp--;
len = (size_t)(li->cursor - ctemp);
temp = el_malloc((len + 1) * sizeof(*temp));
(void)Strncpy(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);
FUN(el,insertstr)(el,
ct_decode_string(matches[0], &el->el_scratch));
}
if (what_to_do == '?')
goto display_matches;
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.
*/
FUN(el,insertstr)(el,
ct_decode_string((*app_func)(matches[0]),
&el->el_scratch));
} else if (what_to_do == '!') {
display_matches:
/*
* 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;
}
/* re_refresh():
* draws the new virtual screen image from the current input
* line, then goes line-by-line changing the real image to the new
* virtual image. The routine to re-draw a line can be replaced
* easily in hopes of a smarter one being placed there.
*/
libedit_private void
re_refresh(EditLine *el)
{
int i, rhdiff;
wchar_t *cp, *st;
coord_t cur;
#ifdef notyet
size_t termsz;
#endif
ELRE_DEBUG(1, (__F, "el->el_line.buffer = :%ls:\r\n",
el->el_line.buffer));
literal_clear(el);
/* reset the Drawing cursor */
el->el_refresh.r_cursor.h = 0;
el->el_refresh.r_cursor.v = 0;
terminal_move_to_char(el, 0);
/* temporarily draw rprompt to calculate its size */
prompt_print(el, EL_RPROMPT);
/* reset the Drawing cursor */
el->el_refresh.r_cursor.h = 0;
el->el_refresh.r_cursor.v = 0;
if (el->el_line.cursor >= el->el_line.lastchar) {
if (el->el_map.current == el->el_map.alt
&& el->el_line.lastchar != el->el_line.buffer)
el->el_line.cursor = el->el_line.lastchar - 1;
else
el->el_line.cursor = el->el_line.lastchar;
}
cur.h = -1; /* set flag in case I'm not set */
cur.v = 0;
prompt_print(el, EL_PROMPT);
/* draw the current input buffer */
#if notyet
termsz = el->el_terminal.t_size.h * el->el_terminal.t_size.v;
if (el->el_line.lastchar - el->el_line.buffer > termsz) {
/*
* If line is longer than terminal, process only part
* of line which would influence display.
*/
size_t rem = (el->el_line.lastchar-el->el_line.buffer)%termsz;
st = el->el_line.lastchar - rem
- (termsz - (((rem / el->el_terminal.t_size.v) - 1)
* el->el_terminal.t_size.v));
} else
#endif
st = el->el_line.buffer;
for (cp = st; cp < el->el_line.lastchar; cp++) {
if (cp == el->el_line.cursor) {
int w = wcwidth(*cp);
/* save for later */
cur.h = el->el_refresh.r_cursor.h;
cur.v = el->el_refresh.r_cursor.v;
/* handle being at a linebroken doublewidth char */
if (w > 1 && el->el_refresh.r_cursor.h + w >
el->el_terminal.t_size.h) {
cur.h = 0;
cur.v++;
}
}
re_addc(el, *cp);
}
if (cur.h == -1) { /* if I haven't been set yet, I'm at the end */
cur.h = el->el_refresh.r_cursor.h;
cur.v = el->el_refresh.r_cursor.v;
}
rhdiff = el->el_terminal.t_size.h - el->el_refresh.r_cursor.h -
el->el_rprompt.p_pos.h;
if (el->el_rprompt.p_pos.h && !el->el_rprompt.p_pos.v &&
!el->el_refresh.r_cursor.v && rhdiff > 1) {
/*
* have a right-hand side prompt that will fit
* on the end of the first line with at least
* one character gap to the input buffer.
*/
while (--rhdiff > 0) /* pad out with spaces */
re_putc(el, ' ', 1);
prompt_print(el, EL_RPROMPT);
} else {
el->el_rprompt.p_pos.h = 0; /* flag "not using rprompt" */
el->el_rprompt.p_pos.v = 0;
}
re_putc(el, '\0', 0); /* make line ended with NUL, no cursor shift */
el->el_refresh.r_newcv = el->el_refresh.r_cursor.v;
ELRE_DEBUG(1, (__F,
"term.h=%d vcur.h=%d vcur.v=%d vdisplay[0]=\r\n:%80.80s:\r\n",
el->el_terminal.t_size.h, el->el_refresh.r_cursor.h,
el->el_refresh.r_cursor.v, ct_encode_string(el->el_vdisplay[0],
&el->el_scratch)));
ELRE_DEBUG(1, (__F, "updating %d lines.\r\n", el->el_refresh.r_newcv));
for (i = 0; i <= el->el_refresh.r_newcv; i++) {
/* NOTE THAT re_update_line MAY CHANGE el_display[i] */
re_update_line(el, el->el_display[i], el->el_vdisplay[i], i);
/*
* Copy the new line to be the current one, and pad out with
* spaces to the full width of the terminal so that if we try
* moving the cursor by writing the character that is at the
* end of the screen line, it won't be a NUL or some old
* leftover stuff.
*/
re__copy_and_pad(el->el_display[i], el->el_vdisplay[i],
(size_t) el->el_terminal.t_size.h);
}
ELRE_DEBUG(1, (__F,
"\r\nel->el_refresh.r_cursor.v=%d,el->el_refresh.r_oldcv=%d i=%d\r\n",
el->el_refresh.r_cursor.v, el->el_refresh.r_oldcv, i));
if (el->el_refresh.r_oldcv > el->el_refresh.r_newcv)
for (; i <= el->el_refresh.r_oldcv; i++) {
terminal_move_to_line(el, i);
terminal_move_to_char(el, 0);
/* This wcslen should be safe even with MB_FILL_CHARs */
terminal_clear_EOL(el, (int) wcslen(el->el_display[i]));
#ifdef DEBUG_REFRESH
terminal_overwrite(el, L"C\b", 2);
#endif /* DEBUG_REFRESH */
el->el_display[i][0] = '\0';
}
el->el_refresh.r_oldcv = el->el_refresh.r_newcv; /* set for next time */
ELRE_DEBUG(1, (__F,
"\r\ncursor.h = %d, cursor.v = %d, cur.h = %d, cur.v = %d\r\n",
el->el_refresh.r_cursor.h, el->el_refresh.r_cursor.v,
cur.h, cur.v));
terminal_move_to_line(el, cur.v); /* go to where the cursor is */
terminal_move_to_char(el, cur.h);
}
