From 7acfca905d76140f4cc0b09c9a12de237de364cd Mon Sep 17 00:00:00 2001
From: Nick Barnes
Date: Wed, 31 Oct 2001 14:40:56 +0000
Subject: Branch imports for masters.

Copied from Perforce
 Change: 23678
 ServerID: perforce.ravenbrook.com

---
 mps/code/idlench.awk | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 mps/code/idlench.awk

(limited to 'mps/code/idlench.awk')

diff --git a/mps/code/idlench.awk b/mps/code/idlench.awk
new file mode 100644
index 00000000000..cafeaaedb8f
--- /dev/null
+++ b/mps/code/idlench.awk
@@ -0,0 +1,69 @@
+#!/bin/nawk -f
+# impl.awk.idlench: IDENTIFIER LENGTH CHECK
+# $HopeName$
+# Copyright (C) 1998.  Harlequin Group plc.  All rights reserved.
+#
+# READERSHIP
+#
+# .readership: Anyone prepared to read awk programs.
+#
+# SOURCE
+#
+# .language: This program is written in awk as specified in the Single
+# UNIX Specification from the X/Open Group (aka XPG4 UNIX, aka UNIX98).
+# See http://www.opengroup.org/onlinepubs/7908799/xcu/awk.html for
+# their man page.
+#
+# DESIGN
+#
+# .design: See design.buildsys.idlench
+#
+# PURPOSE
+#
+# This program processes the output of cxref to find long
+# identifiers.
+#
+# It outputs a list of functions that are used (ie those named appearing
+# in the 3rd column: FUNCTION) whose names completely fill the column.
+#
+# A typical invocation might be:
+# 
+# ./idlench.awk sos8cx/ci/*.o
+#
+# Not all awks are UNIX98 compliant; you need to find one that is.
+# By default (if invoked as above) this script runs using /bin/nawk
+# which on Solaris is a complant awk, but this isn't guaranteed for
+# other systems.
+#
+# So the invocation might be something like:
+#
+# awk -f idlench.awk sos8cx/ci/*.o
+#
+# if there are problems with finding the right awk
+
+# check for good awk
+NR == 1 {
+  if(FNR!=1) {
+    print "error: bad version of awk, try nawk or /usr/xpg4/bin/awk ?"
+    exit 1
+  }
+}
+# skip 1st line
+FNR == 1 {next}
+# 2nd line contains column titles from which we determine widths
+FNR == 2 {
+  lastfunpos=index($0, "LINE")-2
+  firstfunpos=index($0, "FUNCTION")
+  if(lastfunpos<=0 || firstfunpos > lastfunpos) {
+    print "error: malformed line 2 of file " FILENAME; exit 1}
+  funlength = lastfunpos - firstfunpos + 1
+  next
+}
+# for the rest of file, simply check last char in FUNCTION field
+substr($0, lastfunpos, 1) != " " {
+  fun = substr($0, firstfunpos, funlength)
+  if(!dup[fun]) {
+    print fun
+    dup[fun] = 1
+  }
+}
-- 
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