feat(rc): added unix port of rc with linenoise

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/cmd/rc/subr.c b/sys/cmd/rc/subr.c
new file mode 100644
index 0000000..a2d8a18
--- /dev/null
+++ b/sys/cmd/rc/subr.c
@@ -0,0 +1,77 @@
+#include "rc.h"
+#include "exec.h"
+#include "io.h"
+#include "fns.h"
+
+void*
+emalloc(long n)
+{
+	char *p = (char *)Malloc(n);
+	if(p==0)
+		panic("Can't malloc %d bytes", n);
+/*	if(err){ pfmt(err, "malloc %d->%p\n", n, p); flush(err); } /**/
+	memset(p, 0, n);
+	return p;
+}
+
+void
+efree(void *p)
+{
+/*	pfmt(err, "free %p\n", p); flush(err); /**/
+	if(p)
+		free(p);
+	else pfmt(err, "free 0\n");
+}
+extern int lastword, lastdol;
+
+void
+yyerror(char *m)
+{
+	pfmt(err, "rc: ");
+	if(runq->cmdfile && !runq->iflag)
+		pfmt(err, "%s:%d: ", runq->cmdfile, runq->lineno);
+	else if(runq->cmdfile)
+		pfmt(err, "%s: ", runq->cmdfile);
+	else if(!runq->iflag)
+		pfmt(err, "line %d: ", runq->lineno);
+	if(tok[0] && tok[0]!='\n')
+		pfmt(err, "token %q: ", tok);
+	pfmt(err, "%s\n", m);
+	flush(err);
+	lastword = 0;
+	lastdol = 0;
+	while(lastc!='\n' && lastc!=EOF) advance();
+	nerror++;
+	setvar("status", newword(m, (word *)0));
+}
+char *bp;
+
+static void
+iacvt(int n)
+{
+	if(n<0){
+		*bp++='-';
+		n=-n;	/* doesn't work for n==-inf */
+	}
+	if(n/10)
+		iacvt(n/10);
+	*bp++=n%10+'0';
+}
+
+void
+inttoascii(char *s, long n)
+{
+	bp = s;
+	iacvt(n);
+	*bp='\0';
+}
+
+void
+panic(char *s, int n)
+{
+	pfmt(err, "rc: ");
+	pfmt(err, s, n);
+	pchr(err, '\n');
+	flush(err);
+	Abort();
+}