scc

simple c99 compiler
git clone git://git.simple-cc.org/scc
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gentz (577B)

      1 #!/bin/sh
      2 
      3 cat <<EOF
      4 #include <stdlib.h>
      5 #include <string.h>
      6 #include <time.h>
      7 
      8 #include "../libc.h"
      9 
     10 `
     11 awk '{
     12 	zones[$1] = 1
     13 	if (length($1) > max)
     14 		max = length($1)
     15 	nr++
     16 }
     17 END {
     18 	printf("#define MAX %d\n", max+1);
     19 	printf("#define NR %d\n", nr);
     20 	print("static char tzones[NR][MAX] = {");
     21 	for (z in zones)
     22 		printf("\t\\"%s\\",\n", z) | "sort"
     23 	close("sort")
     24 	print "};\n"
     25 }' "$@"`
     26 
     27 static int
     28 cmp(const void *ps1, const void *ps2)
     29 {
     30 	const char *s1 = ps1, *s2 = ps2;
     31 
     32 	return strcmp(s1, s2);
     33 }
     34 
     35 char *
     36 _gmtoff(char *tz)
     37 {
     38 	return bsearch(tz, tzones, NR, MAX, cmp);
     39 }
     40 EOF