| //======================================================================== |
| // |
| // UTF8.h |
| // |
| // Copyright 2001-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| static int mapUTF8(Unicode u, char *buf, int bufSize) { |
| if (u <= 0x0000007f) { |
| if (bufSize < 1) { |
| return 0; |
| } |
| buf[0] = (char)u; |
| return 1; |
| } else if (u <= 0x000007ff) { |
| if (bufSize < 2) { |
| return 0; |
| } |
| buf[0] = (char)(0xc0 + (u >> 6)); |
| buf[1] = (char)(0x80 + (u & 0x3f)); |
| return 2; |
| } else if (u <= 0x0000ffff) { |
| if (bufSize < 3) { |
| return 0; |
| } |
| buf[0] = (char)(0xe0 + (u >> 12)); |
| buf[1] = (char)(0x80 + ((u >> 6) & 0x3f)); |
| buf[2] = (char)(0x80 + (u & 0x3f)); |
| return 3; |
| } else if (u <= 0x0010ffff) { |
| if (bufSize < 4) { |
| return 0; |
| } |
| buf[0] = (char)(0xf0 + (u >> 18)); |
| buf[1] = (char)(0x80 + ((u >> 12) & 0x3f)); |
| buf[2] = (char)(0x80 + ((u >> 6) & 0x3f)); |
| buf[3] = (char)(0x80 + (u & 0x3f)); |
| return 4; |
| } else { |
| return 0; |
| } |
| } |
| |
| static int mapUCS2(Unicode u, char *buf, int bufSize) { |
| if (u <= 0xffff) { |
| if (bufSize < 2) { |
| return 0; |
| } |
| buf[0] = (char)((u >> 8) & 0xff); |
| buf[1] = (char)(u & 0xff); |
| return 2; |
| } else { |
| return 0; |
| } |
| } |