Import sources from 2011-03-30 iso image

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/src/cmd/htmlroff/t6.c b/sys/src/cmd/htmlroff/t6.c
new file mode 100755
index 000000000..130f535fe
--- /dev/null
+++ b/sys/src/cmd/htmlroff/t6.c
@@ -0,0 +1,77 @@
+#include "a.h"
+
+/*
+ * Section 6 - line length and indenting.
+ */
+
+/* set line length */
+void
+ll(int v)
+{
+	if(v == 0)
+		v = getnr(L(".l0"));
+	nr(L(".l0"), getnr(L(".l")));
+	nr(L(".l"), v);
+}
+void
+r_ll(int argc, Rune **argv)
+{
+	if(argc < 2)
+		ll(0);
+	else if(argv[1][0] == '+')
+		ll(getnr(L(".l"))+evalscale(argv[1]+1, 'v'));
+	else if(argv[1][0] == '-')
+		ll(getnr(L(".l"))-evalscale(argv[1]+1, 'v'));
+	else
+		ll(evalscale(argv[1], 'm'));
+	if(argc > 2)
+		warn("extra arguments to .ll");
+}
+
+void
+in(int v)
+{
+	nr(L(".i0"), getnr(L(".i")));
+	nr(L(".i"), v);
+	nr(L(".ti"), 0);
+	/* XXX */
+}
+void
+r_in(int argc, Rune **argv)
+{
+	br();
+	if(argc < 2)
+		in(getnr(L(".i0")));
+	else if(argv[1][0] == '+')
+		in(getnr(L(".i"))+evalscale(argv[1]+1, 'm'));
+	else if(argv[1][0] == '-')
+		in(getnr(L(".i"))-evalscale(argv[1]+1, 'm'));
+	else
+		in(evalscale(argv[1], 'm'));
+	if(argc > 3)
+		warn("extra arguments to .in");
+}
+
+void
+ti(int v)
+{
+	nr(L(".ti"), v);
+}
+void
+r_ti(int argc, Rune **argv)
+{
+	USED(argc);
+	br();
+	ti(evalscale(argv[1], 'm'));
+}
+
+void
+t6init(void)
+{
+	addreq(L("ll"), r_ll, -1);
+	addreq(L("in"), r_in, -1);
+	addreq(L("ti"), r_ti, 1);
+	
+	nr(L(".l"), eval(L("6.5i")));
+}
+