/*
* Convert non-printable character to two or more printable characters in
* "buf[]". "buf" needs to be able to hold five bytes.
* Does NOT work for multi-byte characters, c must be <= 255.
*/
void transchar_nonprint(char_u *buf, int c)
{
if (c == NL)
c = NUL; /* we use newline in place of a NUL */
else if (c == CAR && get_fileformat(curbuf) == EOL_MAC)
c = NL; /* we use CR in place of NL in this case */
if (dy_flags & DY_UHEX) /* 'display' has "uhex" */
transchar_hex(buf, c);
else if (c <= 0x7f) { /* 0x00 - 0x1f and 0x7f */
buf[0] = '^';
buf[1] = c ^ 0x40; /* DEL displayed as ^? */
buf[2] = NUL;
} else if (enc_utf8 && c >= 0x80) {
transchar_hex(buf, c);
} else if (c >= ' ' + 0x80 && c <= '~' + 0x80) { /* 0xa0 - 0xfe */
buf[0] = '|';
buf[1] = c - 0x80;
buf[2] = NUL;
} else { /* 0x80 - 0x9f and 0xff */
/*
* TODO: EBCDIC I don't know what to do with this chars, so I display
* them as '~?' for now
*/
buf[0] = '~';
buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */
buf[2] = NUL;
}
}
/// Convert non-printable character to two or more printable characters in
/// "buf[]". "buf" needs to be able to hold five bytes.
/// Does NOT work for multi-byte characters, c must be <= 255.
///
/// @param buf
/// @param c
void transchar_nonprint(char_u *buf, int c)
{
if (c == NL) {
// we use newline in place of a NUL
c = NUL;
} else if ((c == CAR) && (get_fileformat(curbuf) == EOL_MAC)) {
// we use CR in place of NL in this case
c = NL;
}
if (dy_flags & DY_UHEX) {
// 'display' has "uhex"
transchar_hex(buf, c);
} else if (c <= 0x7f) {
// 0x00 - 0x1f and 0x7f
buf[0] = '^';
// DEL displayed as ^?
buf[1] = c ^ 0x40;
buf[2] = NUL;
} else if (enc_utf8 && (c >= 0x80)) {
transchar_hex(buf, c);
} else if ((c >= ' ' + 0x80) && (c <= '~' + 0x80)) {
// 0xa0 - 0xfe
buf[0] = '|';
buf[1] = c - 0x80;
buf[2] = NUL;
} else {
// 0x80 - 0x9f and 0xff
buf[0] = '~';
buf[1] = (c - 0x80) ^ 0x40;
buf[2] = NUL;
}
}
/// Convert non-printable characters to 2..4 printable ones
///
/// @warning Does not work for multi-byte characters, c must be <= 255.
///
/// @param[out] buf Buffer to store result in, must be able to hold at least
/// 5 bytes (conversion result + NUL).
/// @param[in] c Character to convert. NUL is assumed to be NL according to
/// `:h NL-used-for-NUL`.
void transchar_nonprint(char_u *buf, int c)
{
if (c == NL) {
// we use newline in place of a NUL
c = NUL;
} else if ((c == CAR) && (get_fileformat(curbuf) == EOL_MAC)) {
// we use CR in place of NL in this case
c = NL;
}
assert(c <= 0xff);
if (dy_flags & DY_UHEX || c > 0x7f) {
// 'display' has "uhex"
transchar_hex((char *)buf, c);
} else {
// 0x00 - 0x1f and 0x7f
buf[0] = '^';
// DEL displayed as ^?
buf[1] = (char_u)(c ^ 0x40);
buf[2] = NUL;
}
}
/*
* Convert non-printable character to two or more printable characters in
* "buf[]". "buf" needs to be able to hold five bytes.
* Does NOT work for multi-byte characters, c must be <= 255.
*/
void
transchar_nonprint(char_u *buf, int c)
{
if (c == NL)
c = NUL; /* we use newline in place of a NUL */
else if (c == CAR && get_fileformat(curbuf) == EOL_MAC)
c = NL; /* we use CR in place of NL in this case */
if (dy_flags & DY_UHEX) /* 'display' has "uhex" */
transchar_hex(buf, c);
#ifdef EBCDIC
/* For EBCDIC only the characters 0-63 and 255 are not printable */
else if (CtrlChar(c) != 0 || c == DEL)
#else
else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */
#endif
{
buf[0] = '^';
#ifdef EBCDIC
if (c == DEL)
buf[1] = '?'; /* DEL displayed as ^? */
else
buf[1] = CtrlChar(c);
#else
buf[1] = c ^ 0x40; /* DEL displayed as ^? */
#endif
buf[2] = NUL;
}
#ifdef FEAT_MBYTE
else if (enc_utf8 && c >= 0x80)
{
transchar_hex(buf, c);
}
#endif
#ifndef EBCDIC
else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */
{
buf[0] = '|';
buf[1] = c - 0x80;
buf[2] = NUL;
}
#else
else if (c < 64)
{
buf[0] = '~';
buf[1] = MetaChar(c);
buf[2] = NUL;
}
#endif
else /* 0x80 - 0x9f and 0xff */
{
/*
* TODO: EBCDIC I don't know what to do with this chars, so I display
* them as '~?' for now
*/
buf[0] = '~';
#ifdef EBCDIC
buf[1] = '?'; /* 0xff displayed as ~? */
#else
buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */
#endif
buf[2] = NUL;
}
}
