- if (in_utf) {
- /* UTF is a simple algorithm */
- for (p = linebuffer, i = 0; i < len; i++) {
- wchar_t ch = widebuf[i];
-
- if ((ch&0xF800) == 0xD800) ch = '.';
-
- if (ch < 0x80) {
- *p++ = (char) (ch);
- } else if (ch < 0x800) {
- *p++ = (0xC0 | (ch >> 6));
- *p++ = (0x80 | (ch & 0x3F));
- } else if (ch < 0x10000) {
- *p++ = (0xE0 | (ch >> 12));
- *p++ = (0x80 | ((ch >> 6) & 0x3F));
- *p++ = (0x80 | (ch & 0x3F));
- } else if (ch < 0x200000) {
- *p++ = (0xF0 | (ch >> 18));
- *p++ = (0x80 | ((ch >> 12) & 0x3F));
- *p++ = (0x80 | ((ch >> 6) & 0x3F));
- *p++ = (0x80 | (ch & 0x3F));
- } else if (ch < 0x4000000) {
- *p++ = (0xF8 | (ch >> 24));
- *p++ = (0x80 | ((ch >> 18) & 0x3F));
- *p++ = (0x80 | ((ch >> 12) & 0x3F));
- *p++ = (0x80 | ((ch >> 6) & 0x3F));
- *p++ = (0x80 | (ch & 0x3F));
- } else {
- *p++ = (0xFC | (ch >> 30));
- *p++ = (0x80 | ((ch >> 24) & 0x3F));
- *p++ = (0x80 | ((ch >> 18) & 0x3F));
- *p++ = (0x80 | ((ch >> 12) & 0x3F));
- *p++ = (0x80 | ((ch >> 6) & 0x3F));
- *p++ = (0x80 | (ch & 0x3F));
- }
- }
- } else {
- for (p = linebuffer, i = 0; i < len; i++) {
- wchar_t ch = widebuf[i];
- if (ch < 0x100)
- *p++ = (char) ch;
- else
- *p++ = '.';