1 files changed, 135 insertions, 0 deletions
diff --git a/src/tools/lcc/src/output.c b/src/tools/lcc/src/output.c
new file mode 100644
index 00000000..a9c93e79
--- /dev/null
+++ b/src/tools/lcc/src/output.c
@@ -0,0 +1,135 @@
+#include "c.h"
+
+
+static char *outs(const char *str, FILE *f, char *bp) {
+	if (f)
+		fputs(str, f);
+	else
+		while ((*bp = *str++))
+			bp++;
+	return bp;
+}
+
+static char *outd(long n, FILE *f, char *bp) {
+	unsigned long m;
+	char buf[25], *s = buf + sizeof buf;
+
+	*--s = '\0';
+	if (n < 0)
+		m = -n;
+	else
+		m = n;
+	do
+		*--s = m%10 + '0';
+	while ((m /= 10) != 0);
+	if (n < 0)
+		*--s = '-';
+	return outs(s, f, bp);
+}
+
+static char *outu(unsigned long n, int base, FILE *f, char *bp) {
+	char buf[25], *s = buf + sizeof buf;
+
+	*--s = '\0';
+	do
+		*--s = "0123456789abcdef"[n%base];
+	while ((n /= base) != 0);
+	return outs(s, f, bp);
+}
+void print(const char *fmt, ...) {
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprint(stdout, NULL, fmt, ap);
+	va_end(ap);
+}
+/* fprint - formatted output to  f */
+void fprint(FILE *f, const char *fmt, ...) {
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprint(f, NULL, fmt, ap);
+	va_end(ap);
+}
+
+/* stringf - formatted output to a saved string */
+char *stringf(const char *fmt, ...) {
+	char buf[1024];
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprint(NULL, buf, fmt, ap);
+	va_end(ap);
+	return string(buf);
+}
+
+/* vfprint - formatted output to f or string bp */
+void vfprint(FILE *f, char *bp, const char *fmt, va_list ap) {
+	for (; *fmt; fmt++)
+		if (*fmt == '%')
+			switch (*++fmt) {
+			case 'd': bp = outd(va_arg(ap, int), f, bp); break;
+			case 'D': bp = outd(va_arg(ap, long), f, bp); break;
+			case 'U': bp = outu(va_arg(ap, unsigned long), 10, f, bp); break;
+			case 'u': bp = outu(va_arg(ap, unsigned), 10, f, bp); break;
+			case 'o': bp = outu(va_arg(ap, unsigned), 8, f, bp); break;
+			case 'X': bp = outu(va_arg(ap, unsigned long), 16, f, bp); break;
+			case 'x': bp = outu(va_arg(ap, unsigned), 16, f, bp); break;
+			case 'f': case 'e':
+			case 'g': {
+				  	static char format[] = "%f";
+				  	char buf[128];
+				  	format[1] = *fmt;
+				  	sprintf(buf, format, va_arg(ap, double));
+				  	bp = outs(buf, f, bp);
+				  }
+; break;
+			case 's': bp = outs(va_arg(ap, char *), f, bp); break;
+			case 'p': {
+				void *p = va_arg(ap, void *);
+				if (p)
+					bp = outs("0x", f, bp);
+				bp = outu((unsigned long)p, 16, f, bp);
+				break;
+				  }
+			case 'c': if (f) fputc(va_arg(ap, int), f); else *bp++ = va_arg(ap, int); break;
+			case 'S': { char *s = va_arg(ap, char *);
+				    int n = va_arg(ap, int);
+				    if (s) {
+				    	for ( ; n-- > 0; s++)
+				    		if (f) (void)putc(*s, f); else *bp++ = *s;
+				    }
+ } break;
+			case 'k': { int t = va_arg(ap, int);
+				    static char *tokens[] = {
+#define xx(a,b,c,d,e,f,g) g,
+#define yy(a,b,c,d,e,f,g) g,
+#include "token.h"
+				    };
+				    assert(tokens[t&0177]);
+				    bp = outs(tokens[t&0177], f, bp);
+ } break;
+			case 't': { Type ty = va_arg(ap, Type);
+				    assert(f);
+				    outtype(ty ? ty : voidtype, f);
+ } break;
+			case 'w': { Coordinate *p = va_arg(ap, Coordinate *);
+				    if (p->file && *p->file) {
+				    	bp = outs(p->file, f, bp);
+				    	bp = outs(":", f, bp);
+				    }
+				    bp = outd(p->y, f, bp);
+ } break;
+			case 'I': { int n = va_arg(ap, int);
+				    while (--n >= 0)
+				    	if (f) (void)putc(' ', f); else *bp++ = ' ';
+ } break;
+			default:  if (f) (void)putc(*fmt, f); else *bp++ = *fmt; break;
+			}
+		else if (f)
+			(void)putc(*fmt, f);
+		else
+			*bp++ = *fmt;
+	if (!f)
+		*bp = '\0';
+}