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- #include <stdio.h>
- #include <ctype.h>
- #include <string.h>
-
- /* From the Hcc.lib by Detlef Wurkner, Placed here by J.P. */
- /* Modified by J.P. */
- /* This version of printf does not suport floats, if you need float printf */
- /* link the math.lib as first library in list. */
-
- #define FALSE (0)
- #define TRUE (!FALSE)
-
- static char _numstr[] = "0123456789ABCDEF";
-
- static char *_strlwr(string)
- register char *string;
- {
- register char *p = string;
-
- while(*string)
- tolower(*string++);
- return(p);
- }
-
- static char *_ultoa(n, buffer, radix)
- register unsigned long n;
- register char *buffer;
- register int radix;
- {
- register char *p = buffer;
-
- do
- {
- *p++ = _numstr[n % radix]; /* grab each digit */
- }
- while((n /= radix) > 0);
- *p = '\0';
- return(strrev(buffer)); /* reverse and return it */
- }
-
- static char *_ltoa(n, buffer, radix)
- register long n;
- register char *buffer;
- int radix;
- {
- register char *p = buffer;
-
- if (n < 0)
- {
- *p++ = '-';
- n = -n;
- }
- _ultoa(n, p, radix);
- return(buffer);
- }
-
- static _prtfld(op, put, buf, ljustf, sign, pad, width, preci)
- register char *op;
- register int (*put)();
- register unsigned char *buf;
- int ljustf;
- register char sign;
- char pad;
- register int width;
- int preci;
- /*
- * Output the given field in the manner specified by the arguments.
- * Return the number of characters output.
- */
- {
- register int cnt = 0, len;
- register unsigned char ch;
-
- len = strlen(buf);
-
- if (*buf == '-')
- sign = *buf++;
- else if (sign)
- len++;
-
- if ((preci != -1) && (len > preci)) /* limit max data width */
- len = preci;
-
- if (width < len) /* flexible field width or width overflow */
- width = len;
-
- /* at this point:
- * width = total field width
- * len = actual data width (including possible sign character)
- */
- cnt = width;
- width -= len;
-
- while (width || len)
- {
- if (!ljustf && width) /* left padding */
- {
- if (len && sign && (pad == '0'))
- goto showsign;
- ch = pad;
- --width;
- }
- else if (len)
- {
- if (sign)
- {
- showsign: ch = sign; /* sign */
- sign = '\0';
- }
- else
- ch = *buf++; /* main field */
- --len;
- }
- else
- {
- ch = pad; /* right padding */
- --width;
- }
- (*put)(ch, op);
- }
-
- return(cnt);
- }
-
-
- _printf(op, put, fmt, args)
- char *op;
- unsigned int (*put)();
- register unsigned char *fmt;
- register unsigned int *args;
- {
- register int i, cnt = 0, ljustf, lval;
- int preci, dpoint, width;
- char pad, sign, radix;
- register char *ptmp;
- char tmp[64], *_ltoa(), *_ultoa();
-
- while(*fmt)
- {
- if(*fmt == '%')
- {
- ljustf = FALSE; /* left justify flag */
- sign = '\0'; /* sign char & status */
- pad = ' '; /* justification padding char */
- width = -1; /* min field width */
- dpoint = FALSE; /* found decimal point */
- preci = -1; /* max data width */
- radix = 10; /* number base */
- ptmp = tmp; /* pointer to area to print */
- lval = FALSE; /* long value flaged */
- fmtnxt:
- i = 0;
- while (isdigit(*++fmt))
- {
- i = (i * 10) + (*fmt - '0');
- if (dpoint)
- preci = i;
- else if (!i && (pad == ' '))
- {
- pad = '0';
- goto fmtnxt;
- }
- else
- width = i;
- }
-
- switch(*fmt)
- {
- case '\0': /* early EOS */
- --fmt;
- goto charout;
-
- case '-': /* left justification */
- ljustf = TRUE;
- goto fmtnxt;
-
- case ' ':
- case '+': /* leading sign flag */
- sign = *fmt;
- goto fmtnxt;
-
- case '*': /* parameter width value */
- i = *args++;
- if (dpoint)
- preci = i;
- else
- width = i;
- goto fmtnxt;
-
- case '.': /* secondary width field */
- dpoint = TRUE;
- goto fmtnxt;
-
- case 'l': /* long data */
- lval = TRUE;
- goto fmtnxt;
-
- case 'd': /* Signed decimal */
- case 'i':
- _ltoa((long)((lval)
- ?(*((long *) args))
- :(*((int *) args))),
- ptmp, 10);
- if(lval)
- args = ((unsigned int *)
- (((long *) args) + 1));
- else
- args = ((unsigned int *)
- (((int *) args) + 1));
- goto printit;
-
- case 'b': /* Unsigned binary */
- radix = 2;
- goto usproc;
-
- case 'o': /* Unsigned octal */
- radix = 8;
- goto usproc;
-
- case 'p': /* Pointer */
- lval = TRUE;
- pad = '0';
- width = 6;
- preci = 8;
- /* fall thru */
-
- case 'x': /* Unsigned hexadecimal */
- case 'X':
- radix = 16;
- /* fall thru */
-
- case 'u': /* Unsigned decimal */
- usproc:
- _ultoa((unsigned long)((lval)
- ?(*((unsigned long *) args))
- : *args++ ),
- ptmp, radix);
- if(lval)
- args = ((unsigned int *)
- (((unsigned long *) args) + 1));
- if (*fmt == 'x')
- _strlwr(ptmp);
- goto printit;
-
- case 'c': /* Character */
- ptmp[0] = *args++;
- ptmp[1] = '\0';
- goto nopad;
-
- case 's': /* String */
- ptmp = *((char **) args);
- args = ((unsigned int *)
- (((char **) args) + 1));
- nopad:
- sign = '\0';
- pad = ' ';
- printit:
- cnt += _prtfld(op, put, ptmp, ljustf,
- sign, pad, width, preci);
- break;
-
- default: /* unknown character */
- goto charout;
- }
- }
- else
- {
- charout:
- (*put)(*fmt, op); /* normal char out */
- ++cnt;
- }
- ++fmt;
- }
- return(cnt);
- }
-