Repatch (from linux) of OSX IRAF

1 files changed, 56 insertions, 0 deletions

diff --git a/unix/boot/spp/rpp/rpprat/evalr.r b/unix/boot/spp/rpp/rpprat/evalr.r
new file mode 100644
index 00000000..3752bcd4
--- /dev/null
+++ b/unix/boot/spp/rpp/rpprat/evalr.r
@@ -0,0 +1,56 @@
+#-h-  evalr			 1126  local   12/01/80  15:54:06
+# evalr - expand args i through j: evaluate builtin or push back defn
+   include  defs
+
+   subroutine evalr (argstk, i, j)
+   integer argstk (ARGSIZE), i, j
+
+   include COMMON_BLOCKS
+
+   integer argno, k, m, n, t, td, in_string, delim
+   external index
+   integer index, length
+
+   string digits '0123456789'
+
+   t = argstk (i)
+   td = evalst (t)
+   if (td == MACTYPE)
+      call domac (argstk, i, j)
+   else if (td == INCTYPE)
+      call doincr (argstk, i, j)
+   else if (td == SUBTYPE)
+      call dosub (argstk, i, j)
+   else if (td == IFTYPE)
+      call doif (argstk, i, j)
+   else if (td == ARITHTYPE)
+      call doarth (argstk, i, j)
+   else {
+      in_string = NO
+      for (k = t + length (evalst (t)) - 1; k > t; k = k - 1)
+	 if (evalst(k) == SQUOTE | evalst(k) == DQUOTE) {
+	    if (in_string == NO) {
+		delim = evalst(k)
+		in_string = YES
+		}
+	    else
+		in_string = NO
+	    call putbak (evalst(k))
+	    }
+	 # Don't expand $arg if in a string.
+	 else if (evalst(k-1) != ARGFLAG | in_string == YES)
+	    call putbak (evalst (k))
+	 else {
+	    argno = index (digits, evalst (k))	-  1
+	    if (argno >= 0 & argno < j - i) {
+	       n = i + argno + 1
+	       m = argstk (n)
+	       call pbstr (evalst (m))
+	       }
+	    k = k - 1	# skip over $
+	    }
+      if (k == t)	  # do last character
+	 call putbak (evalst (k))
+      }
+   return
+   end