Slightly dubious certreq adjustments.
[utils.git] / capitalize.c
1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <wchar.h>
4 #include <wctype.h>
5 #include <locale.h>
6
7 wchar_t *exclude[] = {
8     L"a",
9     L"an",
10     L"the",
11     L"in",
12     L"to",
13     L"from",
14     L"of",
15     L"and",
16     L"or",
17     NULL
18 };
19
20 wchar_t *seps = L"-.?!";
21 wchar_t *nonseps = L"\'";
22
23 void capitalize(wchar_t *str)
24 {
25     wchar_t *p, *p2, **ce;
26     int f;
27     
28     p = str;
29     f = 1;
30     while(1) {
31         while(!iswalnum(*p)) {
32             if(*p == L'\0')
33                 return;
34             if(wcschr(seps, *p) != NULL)
35                 f = 1;
36             p++;
37         }
38         p2 = p;
39         while(iswalnum(*p) || (wcschr(nonseps, *p) != NULL)) {
40             *p = towlower(*p);
41             p++;
42         }
43         if(f) {
44             *p2 = towupper(*p2);
45             f = 0;
46         } else {
47             for(ce = exclude; *ce != NULL; ce++) {
48                 if(!wcsncmp(*ce, p2, p - p2) && ((*ce)[p - p2] == L'\0'))
49                     break;
50             }
51             if(*ce == NULL)
52                 *p2 = towupper(*p2);
53         }
54     }
55 }
56
57 int main(int argc, char **argv)
58 {
59     int i;
60     wchar_t buf[256];
61     
62     setlocale(LC_ALL, "");
63     if(argc > 1) {
64         for(i = 1; i < argc; i++) {
65             mbstowcs(buf, argv[i], sizeof(buf) / sizeof(*buf));
66             capitalize(buf);
67             fputws(buf, stdout);
68             fputwc(L'\n', stdout);
69         }
70     } else {
71         while(1) {
72             if(fgetws(buf, sizeof(buf) / sizeof(*buf), stdin) == NULL) {
73                 if(feof(stdin))
74                     break;
75                 perror("reading input");
76                 return(1);
77             }
78             capitalize(buf);
79             fputws(buf, stdout);
80         }
81     }
82     return(0);
83 }
84
85 /*
86  * Local Variables:
87  * compile-command: "gcc -Wall -g -o capitalize capitalize.c"
88  * End:
89  */