1 #!/bin/sh
2 
3 file="${1:?missing input file}"
4 
5 sed -e '/^$/d'		\
6     -e '/^#/d'		\
7     -e 's/;.*//'	\
8     -e 's/[ \t]*$//'	\
9     -e 's/\.\./ /'	\
10     "$file"		\
11 	| awk '
12 BEGIN {
13 	print "#include \"utf8.h\""
14 	print "int is_emoji(uint32_t cp) {"
15 
16 	e=""
17 }
18 
19 {
20 	if (NF == 1) {
21 		printf("%sif (cp == 0x%s)", e, $1);
22 	} else {
23 		printf("%sif (cp >= 0x%s && cp <= 0x%s)", e, $1, $2);
24 	}
25 
26 	print " return 1;"
27 
28 	e="else "
29 }
30 
31 END {
32 	print "return 0; }"
33 }
34 '