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73c04bcf A |
1 | /* |
2 | ** This file is in the public domain, so clarified as of | |
3 | ** 2006-07-17 by Arthur David Olson. | |
4 | */ | |
5 | ||
6 | #ifndef lint | |
7 | #ifndef NOID | |
8 | static char elsieid[] = "@(#)scheck.c 8.19"; | |
9 | #endif /* !defined lint */ | |
10 | #endif /* !defined NOID */ | |
11 | ||
12 | /*LINTLIBRARY*/ | |
13 | ||
14 | #include "private.h" | |
15 | ||
16 | const char * | |
17 | scheck(string, format) | |
18 | const char * const string; | |
19 | const char * const format; | |
20 | { | |
21 | register char * fbuf; | |
22 | register const char * fp; | |
23 | register char * tp; | |
24 | register int c; | |
25 | register const char * result; | |
26 | char dummy; | |
27 | ||
28 | result = ""; | |
29 | if (string == NULL || format == NULL) | |
30 | return result; | |
31 | fbuf = imalloc((int) (2 * strlen(format) + 4)); | |
32 | if (fbuf == NULL) | |
33 | return result; | |
34 | fp = format; | |
35 | tp = fbuf; | |
36 | while ((*tp++ = c = *fp++) != '\0') { | |
37 | if (c != '%') | |
38 | continue; | |
39 | if (*fp == '%') { | |
40 | *tp++ = *fp++; | |
41 | continue; | |
42 | } | |
43 | *tp++ = '*'; | |
44 | if (*fp == '*') | |
45 | ++fp; | |
46 | while (is_digit(*fp)) | |
47 | *tp++ = *fp++; | |
48 | if (*fp == 'l' || *fp == 'h') | |
49 | *tp++ = *fp++; | |
50 | else if (*fp == '[') | |
51 | do *tp++ = *fp++; | |
52 | while (*fp != '\0' && *fp != ']'); | |
53 | if ((*tp++ = *fp++) == '\0') | |
54 | break; | |
55 | } | |
56 | *(tp - 1) = '%'; | |
57 | *tp++ = 'c'; | |
58 | *tp = '\0'; | |
59 | if (sscanf(string, fbuf, &dummy) != 1) | |
60 | result = (char *) format; | |
61 | ifree(fbuf); | |
62 | return result; | |
63 | } |