/* ** This file is in the public domain, so clarified as of ** Feb 14, 2003 by Arthur David Olson (arthur_david_olson@nih.gov). */ #if defined(LIBC_SCCS) && !defined(lint) && !defined(NOID) static char elsieid[] = "@(#)scheck.c 8.15"; static char rcsid[] = "$OpenBSD: scheck.c,v 1.6 2003/02/14 18:24:53 millert Exp $"; #endif /* LIBC_SCCS and not lint */ /*LINTLIBRARY*/ #include "private.h" char * scheck(string, format) const char * const string; const char * const format; { register char * fbuf; register const char * fp; register char * tp; register int c; register char * result; char dummy; static char nada; result = &nada; if (string == NULL || format == NULL) return result; fbuf = imalloc((int) (2 * strlen(format) + 4)); if (fbuf == NULL) return result; fp = format; tp = fbuf; while ((*tp++ = c = *fp++) != '\0') { if (c != '%') continue; if (*fp == '%') { *tp++ = *fp++; continue; } *tp++ = '*'; if (*fp == '*') ++fp; while (is_digit(*fp)) *tp++ = *fp++; if (*fp == 'l' || *fp == 'h') *tp++ = *fp++; else if (*fp == '[') do *tp++ = *fp++; while (*fp != '\0' && *fp != ']'); if ((*tp++ = *fp++) == '\0') break; } *(tp - 1) = '%'; *tp++ = 'c'; *tp = '\0'; if (sscanf(string, fbuf, &dummy) != 1) result = (char *) format; ifree(fbuf); return result; }