144 lines
2.1 KiB
C
144 lines
2.1 KiB
C
/* P R I N T R O U T I N E S */
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#include <system.h>
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#include <em_arith.h>
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#define SSIZE 1024 /* string-buffer size for print routines */
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char *long2str();
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doprnt(fp, fmt, argp)
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File *fp;
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char *fmt;
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int argp[];
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{
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char buf[SSIZE];
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sys_write(fp, buf, format(buf, fmt, (char *)argp));
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}
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/*VARARGS1*/
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printf(fmt, args)
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char *fmt;
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char args;
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{
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char buf[SSIZE];
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sys_write(STDOUT, buf, format(buf, fmt, &args));
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}
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/*VARARGS1*/
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fprintf(fp, fmt, args)
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File *fp;
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char *fmt;
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char args;
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{
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char buf[SSIZE];
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sys_write(fp, buf, format(buf, fmt, &args));
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}
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/*VARARGS1*/
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char *
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sprintf(buf, fmt, args)
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char *buf, *fmt;
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char args;
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{
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buf[format(buf, fmt, &args)] = '\0';
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return buf;
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}
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int
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format(buf, fmt, argp)
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char *buf, *fmt;
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char *argp;
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{
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register char *pf = fmt, *pa = argp;
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register char *pb = buf;
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while (*pf) {
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if (*pf == '%') {
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register int width, base, pad, npad;
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char *arg;
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char cbuf[2];
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char *badformat = "<bad format>";
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/* get padder */
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if (*++pf == '0') {
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pad = '0';
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++pf;
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}
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else
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pad = ' ';
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/* get width */
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width = 0;
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while (*pf >= '0' && *pf <= '9')
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width = 10 * width + *pf++ - '0';
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/* get text and move pa */
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if (*pf == 's') {
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arg = *(char **)pa;
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pa += sizeof(char *);
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}
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else
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if (*pf == 'c') {
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cbuf[0] = * (char *) pa;
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cbuf[1] = '\0';
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pa += sizeof(int);
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arg = &cbuf[0];
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}
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else
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if (*pf == 'l') {
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/* alignment ??? */
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if (base = integral(*++pf)) {
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arg = long2str(*(long *)pa, base);
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pa += sizeof(long);
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}
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else {
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pf--;
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arg = badformat;
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}
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}
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else
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if (base = integral(*pf)) {
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arg = long2str((long)*(int *)pa, base);
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pa += sizeof(int);
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}
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else
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if (*pf == '%')
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arg = "%";
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else
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arg = badformat;
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npad = width - strlen(arg);
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while (npad-- > 0)
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*pb++ = pad;
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while (*pb++ = *arg++);
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pb--;
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pf++;
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}
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else
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*pb++ = *pf++;
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}
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return pb - buf;
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}
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integral(c)
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{
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switch (c) {
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case 'b':
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return -2;
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case 'd':
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return 10;
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case 'o':
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return -8;
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case 'u':
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return -10;
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case 'x':
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return -16;
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}
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return 0;
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}
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