/*- * Copyright (c) 1991 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char sccsid[] = "@(#)printf.c 5.4 (Berkeley) 6/16/91"; #endif /* not lint */ /* * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints * through the putchar() routine. Feel free to use for * anything... -- 7/17/87 Paul Placeway */ #include #include #if __STDC__ # include #else # include #endif #include "csh.h" #include "char.h" #include "extern.h" #ifdef lint #undef va_arg #define va_arg(a, b) (a ? (b) 0 : (b) 0) #endif #define INF 32766 /* should be bigger than any field to print */ static unsigned char buf[128]; static void doprnt(addchar, sfmt, ap) void (*addchar) (); char *sfmt; va_list ap; { register unsigned char *f, *bp; register long l; register unsigned long u; register int i; register int fmt; register unsigned char pad = ' '; int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; int sign = 0; f = (unsigned char *) sfmt; for (; *f; f++) { if (*f != '%') { /* then just out the char */ (*addchar) ((int) (*f)); } else { f++; /* skip the % */ if (*f == '-') { /* minus: flush left */ flush_left = 1; f++; } if (*f == '0' || *f == '.') { /* padding with 0 rather than blank */ pad = '0'; f++; } if (*f == '*') { /* field width */ f_width = va_arg(ap, int); f++; } else if (Isdigit(*f)) { f_width = atoi((char *) f); while (Isdigit(*f)) f++; /* skip the digits */ } if (*f == '.') { /* precision */ f++; if (*f == '*') { prec = va_arg(ap, int); f++; } else if (Isdigit(*f)) { prec = atoi((char *) f); while (Isdigit(*f)) f++; /* skip the digits */ } } if (*f == '#') { /* alternate form */ hash = 1; f++; } if (*f == 'l') { /* long format */ do_long = 1; f++; } fmt = *f; if (Isupper(fmt)) { do_long = 1; fmt = Tolower(fmt); } bp = buf; switch (fmt) { /* do the format */ case 'd': if (do_long) l = va_arg(ap, long); else l = (long) (va_arg(ap, int)); if (l < 0) { sign = 1; l = -l; } do { *bp++ = l % 10 + '0'; } while ((l /= 10) > 0); if (sign) *bp++ = '-'; f_width = f_width - (bp - buf); if (!flush_left) while (f_width-- > 0) (*addchar) ((int) (pad)); for (bp--; bp >= buf; bp--) (*addchar) ((int) (*bp)); if (flush_left) while (f_width-- > 0) (*addchar) ((int) (' ')); break; case 'o': case 'x': case 'u': if (do_long) u = va_arg(ap, unsigned long); else u = (unsigned long) (va_arg(ap, unsigned)); if (fmt == 'u') { /* unsigned decimal */ do { *bp++ = u % 10 + '0'; } while ((u /= 10) > 0); } else if (fmt == 'o') { /* octal */ do { *bp++ = u % 8 + '0'; } while ((u /= 8) > 0); if (hash) *bp++ = '0'; } else if (fmt == 'x') { /* hex */ do { i = u % 16; if (i < 10) *bp++ = i + '0'; else *bp++ = i - 10 + 'a'; } while ((u /= 16) > 0); if (hash) { *bp++ = 'x'; *bp++ = '0'; } } i = f_width - (bp - buf); if (!flush_left) while (i-- > 0) (*addchar) ((int) (pad)); for (bp--; bp >= buf; bp--) (*addchar) ((int) (*bp)); if (flush_left) while (i-- > 0) (*addchar) ((int) (' ')); break; case 'c': i = va_arg(ap, int); (*addchar) ((int) (i)); break; case 's': bp = va_arg(ap, unsigned char *); if (!bp) bp = (unsigned char *) "(nil)"; f_width = f_width - strlen((char *) bp); if (!flush_left) while (f_width-- > 0) (*addchar) ((int) (pad)); for (i = 0; *bp && i < prec; i++) { (*addchar) ((int) (*bp)); bp++; } if (flush_left) while (f_width-- > 0) (*addchar) ((int) (' ')); break; case '%': (*addchar) ((int) ('%')); break; } flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; sign = 0; pad = ' '; } } } static unsigned char *xstring; static void xaddchar(c) int c; { *xstring++ = c; } void #if __STDC__ xsprintf(char *str, char *fmt, ...) #else xsprintf(str, fmt, va_alist) char *str; char *fmt; va_dcl #endif { va_list va; #if __STDC__ va_start(va, fmt); #else va_start(va); #endif xstring = (unsigned char *) str; doprnt(xaddchar, fmt, va); va_end(va); *xstring++ = '\0'; } void #if __STDC__ xprintf(char *fmt, ...) #else xprintf(fmt, va_alist) char *fmt; va_dcl #endif { va_list va; #if __STDC__ va_start(va, fmt); #else va_start(va); #endif doprnt(xputchar, fmt, va); va_end(va); } void xvprintf(fmt, va) char *fmt; va_list va; { doprnt(xputchar, fmt, va); } void xvsprintf(str, fmt, va) char *str; char *fmt; va_list va; { xstring = (unsigned char *) str; doprnt(xaddchar, fmt, va); *xstring++ = '\0'; }