Plan 9's rc.

not a clear win over byron's,
but at least it has the right syntax.

1 files changed, 59 insertions, 0 deletions

diff --git a/src/cmd/rc/subr.c b/src/cmd/rc/subr.c
new file mode 100644
index 00000000..2b242242
--- /dev/null
+++ b/src/cmd/rc/subr.c
@@ -0,0 +1,59 @@
+#include "rc.h"
+#include "exec.h"
+#include "io.h"
+#include "fns.h"
+char *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); } *//**/
+	return p;
+}
+void efree(char *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;
+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 itoa(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();
+}