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patch 8.2.1587: loop for handling keys for the command line is too long

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Problem:    Loop for handling keys for the command line is too long.
Solution:   Move wild menu handling to separate functions. (Yegappan
            Lakshmanan, closes #6856)
This commit is contained in:
Bram Moolenaar
2020-09-04 15:37:31 +02:00
parent fe6dce8739
commit eadee486c7
4 changed files with 258 additions and 213 deletions
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249
src/cmdexpand.c
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@@ -2614,6 +2614,255 @@ globpath(
vim_free(buf);
}
#ifdef FEAT_WILDMENU
/*
* Translate some keys pressed when 'wildmenu' is used.
*/
int
wildmenu_translate_key(
cmdline_info_T *cclp,
int key,
expand_T *xp,
int did_wild_list)
{
int c = key;
if (did_wild_list && p_wmnu)
{
if (c == K_LEFT)
c = Ctrl_P;
else if (c == K_RIGHT)
c = Ctrl_N;
}
// Hitting CR after "emenu Name.": complete submenu
if (xp->xp_context == EXPAND_MENUNAMES && p_wmnu
&& cclp->cmdpos > 1
&& cclp->cmdbuff[cclp->cmdpos - 1] == '.'
&& cclp->cmdbuff[cclp->cmdpos - 2] != '\\'
&& (c == '\n' || c == '\r' || c == K_KENTER))
c = K_DOWN;
return c;
}
/*
* Delete characters on the command line, from "from" to the current
* position.
*/
static void
cmdline_del(cmdline_info_T *cclp, int from)
{
mch_memmove(cclp->cmdbuff + from, cclp->cmdbuff + cclp->cmdpos,
(size_t)(cclp->cmdlen - cclp->cmdpos + 1));
cclp->cmdlen -= cclp->cmdpos - from;
cclp->cmdpos = from;
}
/*
* Handle a key pressed when wild menu is displayed
*/
int
wildmenu_process_key(cmdline_info_T *cclp, int key, expand_T *xp)
{
int c = key;
int i;
int j;
if (!p_wmnu)
return c;
// Special translations for 'wildmenu'
if (xp->xp_context == EXPAND_MENUNAMES)
{
// Hitting <Down> after "emenu Name.": complete submenu
if (c == K_DOWN && cclp->cmdpos > 0
&& cclp->cmdbuff[cclp->cmdpos - 1] == '.')
c = p_wc;
else if (c == K_UP)
{
// Hitting <Up>: Remove one submenu name in front of the
// cursor
int found = FALSE;
j = (int)(xp->xp_pattern - cclp->cmdbuff);
i = 0;
while (--j > 0)
{
// check for start of menu name
if (cclp->cmdbuff[j] == ' '
&& cclp->cmdbuff[j - 1] != '\\')
{
i = j + 1;
break;
}
// check for start of submenu name
if (cclp->cmdbuff[j] == '.'
&& cclp->cmdbuff[j - 1] != '\\')
{
if (found)
{
i = j + 1;
break;
}
else
found = TRUE;
}
}
if (i > 0)
cmdline_del(cclp, i);
c = p_wc;
xp->xp_context = EXPAND_NOTHING;
}
}
if ((xp->xp_context == EXPAND_FILES
|| xp->xp_context == EXPAND_DIRECTORIES
|| xp->xp_context == EXPAND_SHELLCMD))
{
char_u upseg[5];
upseg[0] = PATHSEP;
upseg[1] = '.';
upseg[2] = '.';
upseg[3] = PATHSEP;
upseg[4] = NUL;
if (c == K_DOWN
&& cclp->cmdpos > 0
&& cclp->cmdbuff[cclp->cmdpos - 1] == PATHSEP
&& (cclp->cmdpos < 3
|| cclp->cmdbuff[cclp->cmdpos - 2] != '.'
|| cclp->cmdbuff[cclp->cmdpos - 3] != '.'))
{
// go down a directory
c = p_wc;
}
else if (STRNCMP(xp->xp_pattern, upseg + 1, 3) == 0 && c == K_DOWN)
{
// If in a direct ancestor, strip off one ../ to go down
int found = FALSE;
j = cclp->cmdpos;
i = (int)(xp->xp_pattern - cclp->cmdbuff);
while (--j > i)
{
if (has_mbyte)
j -= (*mb_head_off)(cclp->cmdbuff, cclp->cmdbuff + j);
if (vim_ispathsep(cclp->cmdbuff[j]))
{
found = TRUE;
break;
}
}
if (found
&& cclp->cmdbuff[j - 1] == '.'
&& cclp->cmdbuff[j - 2] == '.'
&& (vim_ispathsep(cclp->cmdbuff[j - 3]) || j == i + 2))
{
cmdline_del(cclp, j - 2);
c = p_wc;
}
}
else if (c == K_UP)
{
// go up a directory
int found = FALSE;
j = cclp->cmdpos - 1;
i = (int)(xp->xp_pattern - cclp->cmdbuff);
while (--j > i)
{
if (has_mbyte)
j -= (*mb_head_off)(cclp->cmdbuff, cclp->cmdbuff + j);
if (vim_ispathsep(cclp->cmdbuff[j])
# ifdef BACKSLASH_IN_FILENAME
&& vim_strchr((char_u *)" *?[{`$%#",
cclp->cmdbuff[j + 1]) == NULL
# endif
)
{
if (found)
{
i = j + 1;
break;
}
else
found = TRUE;
}
}
if (!found)
j = i;
else if (STRNCMP(cclp->cmdbuff + j, upseg, 4) == 0)
j += 4;
else if (STRNCMP(cclp->cmdbuff + j, upseg + 1, 3) == 0
&& j == i)
j += 3;
else
j = 0;
if (j > 0)
{
// TODO this is only for DOS/UNIX systems - need to put in
// machine-specific stuff here and in upseg init
cmdline_del(cclp, j);
put_on_cmdline(upseg + 1, 3, FALSE);
}
else if (cclp->cmdpos > i)
cmdline_del(cclp, i);
// Now complete in the new directory. Set KeyTyped in case the
// Up key came from a mapping.
c = p_wc;
KeyTyped = TRUE;
}
}
return c;
}
/*
* Free expanded names when finished walking through the matches
*/
void
wildmenu_cleanup(cmdline_info_T *cclp)
{
int skt = KeyTyped;
int old_RedrawingDisabled = RedrawingDisabled;
if (!p_wmnu || wild_menu_showing == 0)
return;
if (cclp->input_fn)
RedrawingDisabled = 0;
if (wild_menu_showing == WM_SCROLLED)
{
// Entered command line, move it up
cmdline_row--;
redrawcmd();
}
else if (save_p_ls != -1)
{
// restore 'laststatus' and 'winminheight'
p_ls = save_p_ls;
p_wmh = save_p_wmh;
last_status(FALSE);
update_screen(VALID); // redraw the screen NOW
redrawcmd();
save_p_ls = -1;
}
else
{
win_redraw_last_status(topframe);
redraw_statuslines();
}
KeyTyped = skt;
wild_menu_showing = 0;
if (cclp->input_fn)
RedrawingDisabled = old_RedrawingDisabled;
}
#endif
#if defined(FEAT_EVAL) || defined(PROTO)
/*
* "getcompletion()" function