scc

simple c99 compiler
git clone git://git.simple-cc.org/scc
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0077-setlocale.c (947B)

      1 #include <assert.h>
      2 #include <locale.h>
      3 #include <stdio.h>
      4 #include <string.h>
      5 
      6 /*
      7 output:
      8 testing
      9 done
     10 end:
     11 */
     12 
     13 static int neg, pos;
     14 
     15 static int
     16 setup(void)
     17 {
     18 	neg = LC_ALL;
     19 	if (neg > LC_COLLATE)
     20 		neg = LC_COLLATE;
     21 	if (neg > LC_CTYPE)
     22 		neg = LC_CTYPE;
     23 	if (neg > LC_MONETARY)
     24 		neg = LC_MONETARY;
     25 	if (neg > LC_NUMERIC)
     26 		neg = LC_NUMERIC;
     27 	if (neg > LC_TIME)
     28 		neg = LC_TIME;
     29 	--neg;
     30 
     31 	pos = LC_ALL;
     32 	if (pos < LC_COLLATE)
     33 		pos = LC_COLLATE;
     34 	if (pos < LC_CTYPE)
     35 		pos = LC_CTYPE;
     36 	if (pos < LC_MONETARY)
     37 		pos = LC_MONETARY;
     38 	if (pos < LC_NUMERIC)
     39 		pos = LC_NUMERIC;
     40 	if (pos < LC_TIME)
     41 		pos = LC_TIME;
     42 	++pos;
     43 
     44 	return 0;
     45 }
     46 
     47 static void
     48 run(void)
     49 {
     50 	char *l1, *l2;
     51 
     52 	l1 = setlocale(LC_ALL, NULL);
     53 	assert(strcmp(l1, "C") == 0);
     54 
     55 	l1 = setlocale(pos, "C");
     56 	l2 = setlocale(neg, "C");
     57 
     58 	assert(l1 == NULL);
     59 	assert(l2 == NULL);
     60 
     61 	setlocale(LC_ALL, "");
     62 }
     63 
     64 int
     65 main(void)
     66 {
     67 	puts("testing");
     68 	setup();
     69 	run();
     70 	puts("done");
     71 
     72 	return 0;
     73 }