Limited tsort replacement.

diff --git a/manual/tsort.awk b/manual/tsort.awk
new file mode 100644 (file)
index 0000000..8e77ffe
--- /dev/null
+++ b/manual/tsort.awk
@@ -0,0 +1,46 @@
+#! /usr/bin/awk -f
+# Generate topologically sorted list of manual chapters.
+# (C) Copyright 1998, 1999 Free Software Foundation, Inc.
+# Written by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+BEGIN {
+  cnt = 0
+  dnt = 0
+}
+{
+  to[dnt] = $1
+  from[dnt] = $2
+  ++dnt
+  all[cnt++] = $1
+}
+END {
+  do {
+    moved = 0
+    for (i = 0; i < dnt; ++i) {
+      for (j = 0; j < cnt; ++j) {
+       if (all[j] == from[i]) {
+         for (k = j + 1; k < cnt; ++k) {
+           if (all[k] == to[i]) {
+             break;
+           }
+         }
+         if (k < cnt) {
+           for (l = k - 1; l >= j; --l) {
+             all[l + 1] = all[l]
+           }
+           all[j] = to[i]
+           break;
+         }
+       }
+      }
+      if (j < cnt) {
+       moved = 1
+       break
+      }
+    }
+  } while (moved)
+
+  for (i = 0; i < cnt; ++i) {
+    print all[i];
+  }
+}