Initial commit

1 files changed, 48 insertions, 0 deletions

diff --git a/unix/boot/spp/rpp/ratlibr/omatch.r b/unix/boot/spp/rpp/ratlibr/omatch.r
new file mode 100644
index 00000000..598a4e24
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibr/omatch.r
@@ -0,0 +1,48 @@
+include	defs
+
+# omatch --- try to match a single pattern at pat (j)
+
+   integer function omatch (lin, i, pat, j)
+   character lin (MAXLINE), pat (MAXPAT)
+   integer i, j
+
+   integer bump
+   integer locate
+
+   omatch = NO
+   if (lin (i) == EOS)
+      return
+   bump = -1
+   if (pat (j) == CHAR) {
+      if (lin (i) == pat (j + 1))
+	 bump = 1
+      }
+   else if (pat (j) == BOL) {
+      if (i == 1)
+	 bump = 0
+      }
+   else if (pat (j) == ANY) {
+      if (lin (i) != NEWLINE)
+	 bump = 1
+      }
+   else if (pat (j) == EOL) {
+      if (lin (i) == NEWLINE)
+	 bump = 0
+      }
+   else if (pat (j) == CCL) {
+      if (locate (lin (i), pat, j + 1) == YES)
+	 bump = 1
+      }
+   else if (pat (j) == NCCL) {
+      if (lin (i) != NEWLINE & locate (lin (i), pat, j + 1) == NO)
+	 bump = 1
+      }
+   else
+      call error ("in omatch: can't happen.")
+   if (bump >= 0) {
+      i = i + bump
+      omatch = YES
+      }
+
+   return
+   end