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#define _is_alpha(c)\
((c == 'A') ||\
(c == 'B') ||\
(c == 'C') ||\
(c == 'D') ||\
(c == 'E') ||\
(c == 'F') ||\
(c == 'G') ||\
(c == 'H') ||\
(c == 'I') ||\
(c == 'J') ||\
(c == 'K') ||\
(c == 'L') ||\
(c == 'M') ||\
(c == 'N') ||\
(c == 'O') ||\
(c == 'P') ||\
(c == 'Q') ||\
(c == 'R') ||\
(c == 'S') ||\
(c == 'T') ||\
(c == 'U') ||\
(c == 'V') ||\
(c == 'W') ||\
(c == 'X') ||\
(c == 'Y') ||\
(c == 'Z') ||\
(c == 'a') ||\
(c == 'b') ||\
(c == 'c') ||\
(c == 'd') ||\
(c == 'e') ||\
(c == 'f') ||\
(c == 'g') ||\
(c == 'h') ||\
(c == 'i') ||\
(c == 'j') ||\
(c == 'k') ||\
(c == 'l') ||\
(c == 'm') ||\
(c == 'n') ||\
(c == 'o') ||\
(c == 'p') ||\
(c == 'q') ||\
(c == 'r') ||\
(c == 's') ||\
(c == 't') ||\
(c == 'u') ||\
(c == 'v') ||\
(c == 'w') ||\
(c == 'x') ||\
(c == 'y') ||\
(c == 'z'))
#define _is_digit(c)\
((c == '0') ||\
(c == '1') ||\
(c == '2') ||\
(c == '3') ||\
(c == '4') ||\
(c == '5') ||\
(c == '6') ||\
(c == '7') ||\
(c == '8') ||\
(c == '9'))
#define _is_gen_delim(c)\
((c == ':') ||\
(c == '/') ||\
(c == '?') ||\
(c == '#') ||\
(c == '[') ||\
(c == ']') ||\
(c == '@'))
#define _is_sub_delim(c)\
((c == '!') ||\
(c == '$') ||\
(c == '&') ||\
(c == '\'') ||\
(c == '(') ||\
(c == ')') ||\
(c == '*') ||\
(c == '+') ||\
(c == ',') ||\
(c == ';') ||\
(c == '='))
#define _is_unreserved(c)\
(_is_alpha(c) ||\
_is_digit(c) ||\
(c == '-') ||\
(c == '.') ||\
(c == '_') ||\
(c == '~'))
#define _is_reserved(c)\
(_is_gen_delim(c) ||\
_is_sub_delim(c))
#define _is_pchar(c)\
(_is_unreserved(c) ||\
_is_sub_delim(c) ||\
(c == ':') ||\
(c == '@') ||\
(c == '%'))
#define _is_userinfo(c)\
(_is_unreserved(c) ||\
_is_sub_delim(c) ||\
(c == ':') ||\
(c == '%'))
#define _is_segment(c)\
_is_pchar(c)
#define _is_segment_nc(c)\
(_is_unreserved(c) ||\
_is_sub_delim(c) ||\
(c == '@') ||\
(c == '%'))
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