/*
* Try translating a <> name at (*srcp)[], return the key and modifiers.
* srcp is advanced to after the <> name.
* returns 0 if there is no match.
*/
int
find_special_key (
char_u **srcp,
int *modp,
int keycode, /* prefer key code, e.g. K_DEL instead of DEL */
int keep_x_key /* don't translate xHome to Home key */
)
{
char_u *last_dash;
char_u *end_of_name;
char_u *src;
char_u *bp;
int modifiers;
int bit;
int key;
unsigned long n;
int l;
src = *srcp;
if (src[0] != '<')
return 0;
/* Find end of modifier list */
last_dash = src;
for (bp = src + 1; *bp == '-' || vim_isIDc(*bp); bp++) {
if (*bp == '-') {
last_dash = bp;
if (bp[1] != NUL) {
if (has_mbyte)
l = mb_ptr2len(bp + 1);
else
l = 1;
if (bp[l + 1] == '>')
bp += l; /* anything accepted, like <C-?> */
}
}
if (bp[0] == 't' && bp[1] == '_' && bp[2] && bp[3])
bp += 3; /* skip t_xx, xx may be '-' or '>' */
else if (STRNICMP(bp, "char-", 5) == 0) {
vim_str2nr(bp + 5, NULL, &l, TRUE, TRUE, NULL, NULL);
bp += l + 5;
break;
}
}
if (*bp == '>') { /* found matching '>' */
end_of_name = bp + 1;
/* Which modifiers are given? */
modifiers = 0x0;
for (bp = src + 1; bp < last_dash; bp++) {
if (*bp != '-') {
bit = name_to_mod_mask(*bp);
if (bit == 0x0)
break; /* Illegal modifier name */
modifiers |= bit;
}
}
/*
* Legal modifier name.
*/
if (bp >= last_dash) {
if (STRNICMP(last_dash + 1, "char-", 5) == 0
&& VIM_ISDIGIT(last_dash[6])) {
/* <Char-123> or <Char-033> or <Char-0x33> */
vim_str2nr(last_dash + 6, NULL, NULL, TRUE, TRUE, NULL, &n);
key = (int)n;
} else {
/*
* Modifier with single letter, or special key name.
*/
if (has_mbyte)
l = mb_ptr2len(last_dash + 1);
else
l = 1;
if (modifiers != 0 && last_dash[l + 1] == '>')
key = PTR2CHAR(last_dash + 1);
else {
key = get_special_key_code(last_dash + 1);
if (!keep_x_key)
key = handle_x_keys(key);
}
}
/*
* get_special_key_code() may return NUL for invalid
* special key name.
*/
if (key != NUL) {
/*
* Only use a modifier when there is no special key code that
* includes the modifier.
*/
key = simplify_key(key, &modifiers);
if (!keycode) {
/* don't want keycode, use single byte code */
if (key == K_BS)
key = BS;
else if (key == K_DEL || key == K_KDEL)
key = DEL;
}
/*
* Normal Key with modifier: Try to make a single byte code.
*/
if (!IS_SPECIAL(key))
key = extract_modifiers(key, &modifiers);
*modp = modifiers;
*srcp = end_of_name;
return key;
}
}
}
return 0;
}
int find_special_key(const char_u **srcp, const size_t src_len, int *const modp,
const bool keycode, const bool keep_x_key,
const bool in_string)
{
const char_u *last_dash;
const char_u *end_of_name;
const char_u *src;
const char_u *bp;
const char_u *const end = *srcp + src_len - 1;
int modifiers;
int bit;
int key;
uvarnumber_T n;
int l;
if (src_len == 0) {
return 0;
}
src = *srcp;
if (src[0] != '<') {
return 0;
}
// Find end of modifier list
last_dash = src;
for (bp = src + 1; bp <= end && (*bp == '-' || ascii_isident(*bp)); bp++) {
if (*bp == '-') {
last_dash = bp;
if (bp + 1 <= end) {
l = utfc_ptr2len_len(bp + 1, (int)(end - bp) + 1);
// Anything accepted, like <C-?>.
// <C-"> or <M-"> are not special in strings as " is
// the string delimiter. With a backslash it works: <M-\">
if (end - bp > l && !(in_string && bp[1] == '"') && bp[2] == '>') {
bp += l;
} else if (end - bp > 2 && in_string && bp[1] == '\\'
&& bp[2] == '"' && bp[3] == '>') {
bp += 2;
}
}
}
if (end - bp > 3 && bp[0] == 't' && bp[1] == '_') {
bp += 3; // skip t_xx, xx may be '-' or '>'
} else if (end - bp > 4 && STRNICMP(bp, "char-", 5) == 0) {
vim_str2nr(bp + 5, NULL, &l, STR2NR_ALL, NULL, NULL, 0);
bp += l + 5;
break;
}
}
if (bp <= end && *bp == '>') { // found matching '>'
end_of_name = bp + 1;
/* Which modifiers are given? */
modifiers = 0x0;
for (bp = src + 1; bp < last_dash; bp++) {
if (*bp != '-') {
bit = name_to_mod_mask(*bp);
if (bit == 0x0) {
break; // Illegal modifier name
}
modifiers |= bit;
}
}
// Legal modifier name.
if (bp >= last_dash) {
if (STRNICMP(last_dash + 1, "char-", 5) == 0
&& ascii_isdigit(last_dash[6])) {
// <Char-123> or <Char-033> or <Char-0x33>
vim_str2nr(last_dash + 6, NULL, NULL, STR2NR_ALL, NULL, &n, 0);
key = (int)n;
} else {
int off = 1;
// Modifier with single letter, or special key name.
if (in_string && last_dash[1] == '\\' && last_dash[2] == '"') {
off = 2;
}
l = mb_ptr2len(last_dash + 1);
if (modifiers != 0 && last_dash[l + 1] == '>') {
key = PTR2CHAR(last_dash + off);
} else {
key = get_special_key_code(last_dash + off);
if (!keep_x_key) {
key = handle_x_keys(key);
}
}
}
// get_special_key_code() may return NUL for invalid
// special key name.
if (key != NUL) {
// Only use a modifier when there is no special key code that
// includes the modifier.
key = simplify_key(key, &modifiers);
if (!keycode) {
// don't want keycode, use single byte code
if (key == K_BS) {
key = BS;
} else if (key == K_DEL || key == K_KDEL) {
key = DEL;
}
}
// Normal Key with modifier:
// Try to make a single byte code (except for Alt/Meta modifiers).
if (!IS_SPECIAL(key)) {
key = extract_modifiers(key, &modifiers);
}
*modp = modifiers;
*srcp = end_of_name;
return key;
}
}
}
return 0;
}