diff options
Diffstat (limited to 'WWW/Library/Implementation/HTParse.c')
| -rw-r--r-- | WWW/Library/Implementation/HTParse.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/WWW/Library/Implementation/HTParse.c b/WWW/Library/Implementation/HTParse.c index 463488f7..5c455a65 100644 --- a/WWW/Library/Implementation/HTParse.c +++ b/WWW/Library/Implementation/HTParse.c @@ -585,6 +585,10 @@ PUBLIC char * HTUnEscape ARGS1( { char * p = str; char * q = str; + + if (!(p && *p)) + return str; + while (*p) { if (*p == HEX_ESCAPE) { p++; @@ -603,4 +607,43 @@ PUBLIC char * HTUnEscape ARGS1( } /* HTUnEscape */ +/* Decode some %xx escaped characters HTUnEscapeSome() +** ---------------------------------- Klaus Weide +** (kweide@tezcat.com) +** This function takes a pointer to a string in which some +** characters may have been encoded in %xy form, where xy is +** the acsii hex code for character 16x+y, and a pointer to +** a second string containing one or more characters which +** should be unescaped if escaped in the first string. +** The first string is converted in place, as it will never grow. +*/ +PUBLIC char * HTUnEscapeSome ARGS2( + char *, str, + CONST char *, do_trans) +{ + char * p = str; + char * q = str; + char testcode; + + if (!(p && *p) || !(do_trans && *do_trans)) + return str; + + while (*p) { + if (*p == HEX_ESCAPE && + p[1] && p[2] && /* tests shouldn't be needed, but.. */ + isxdigit((unsigned char)p[1]) && + isxdigit((unsigned char)p[2]) && + (testcode = from_hex(p[1])*16 + from_hex(p[2])) && /* %00 no good*/ + strchr(do_trans, testcode)) { /* it's one of the ones we want */ + *q++ = FROMASCII(testcode); + p += 3; + } else { + *q++ = *p++; + } + } + + *q++ = '\0'; + return str; + +} /* HTUnEscapeSome */ |