PRIVATE char *intlmime_decode_qp(char *in) { int i = 0, length; char token[3]; char *out, *dest = 0; out = dest = (char *)XP_ALLOC(strlen(in)+1); if (dest == NULL) return NULL; memset(out, 0, strlen(in)+1); length = strlen(in); while (length > 0 || i != 0) { while (i < 3 && length > 0) { token [i++] = *in; in++; length--; } if (i < 3) { /* Didn't get enough for a complete token. If it might be a token, unread it. Otherwise, just dump it. */ strncpy (out, token, i); break; } i = 0; if (token [0] == '=') { unsigned char c = 0; if (token[1] >= '0' && token[1] <= '9') c = token[1] - '0'; else if (token[1] >= 'A' && token[1] <= 'F') c = token[1] - ('A' - 10); else if (token[1] >= 'a' && token[1] <= 'f') c = token[1] - ('a' - 10); else if (token[1] == CR || token[1] == LF) { /* =\n means ignore the newline. */ if (token[1] == CR && token[2] == LF) ; /* swallow all three chars */ else { in--; /* put the third char back */ length++; } continue; } else { /* = followed by something other than hex or newline - pass it through unaltered, I guess. (But, if this bogus token happened to occur over a buffer boundary, we can't do this, since we don't have space for it. Oh well. Forget it.) */ if (in > out) *out++ = token[0]; if (in > out) *out++ = token[1]; if (in > out) *out++ = token[2]; continue; } /* Second hex digit */ c = (c << 4); if (token[2] >= '0' && token[2] <= '9') c += token[2] - '0'; else if (token[2] >= 'A' && token[2] <= 'F') c += token[2] - ('A' - 10); else if (token[2] >= 'a' && token[2] <= 'f') c += token[2] - ('a' - 10); else { /* We got =xy where "x" was hex and "y" was not, so treat that as a literal "=", x, and y. (But, if this bogus token happened to occur over a buffer boundary, we can't do this, since we don't have space for it. Oh well. Forget it.) */ if (in > out) *out++ = token[0]; if (in > out) *out++ = token[1]; if (in > out) *out++ = token[2]; continue; } *out++ = (char) c; } else { *out++ = token [0]; token[0] = token[1]; token[1] = token[2]; i = 2; } } /* take care of special underscore case */ for (out = dest; *out; out++) if (*out == '_') *out = ' '; return dest; }
file: /Techref/method/codec/qpdecode.htm, 3KB, , updated: 1999/12/21 11:24, local time: 2024/11/26 23:50,
3.145.58.158:LOG IN
|
©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://ecomorder.com/techref/method/codec/qpdecode.htm"> method codec qpdecode</A> |
Did you find what you needed? |
Welcome to ecomorder.com! |
Welcome to ecomorder.com! |
.