Imported Upstream version 7.6.3upstream/7.6.3

1 files changed, 81 insertions, 104 deletions

diff --git a/ylwrap b/ylwrap
index 1c4d776..9253635 100755
--- a/ylwrap
+++ b/ylwrap
@@ -1,9 +1,10 @@
 #! /bin/sh
 # ylwrap - wrapper for lex/yacc invocations.
 
-scriptversion=2012-12-21.17; # UTC
+scriptversion=2011-08-25.18; # UTC
 
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
+# 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
 #
 # Written by Tom Tromey <tromey@cygnus.com>.
 #
@@ -29,41 +30,9 @@ scriptversion=2012-12-21.17; # UTC
 # bugs to <bug-automake@gnu.org> or send patches to
 # <automake-patches@gnu.org>.
 
-get_dirname ()
-{
-  case $1 in
-    */*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';;
-    # Otherwise,  we want the empty string (not ".").
-  esac
-}
-
-# guard FILE
-# ----------
-# The CPP macro used to guard inclusion of FILE.
-guard()
-{
-  printf '%s\n' "$1"                                                    \
-    | sed                                                               \
-        -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'   \
-        -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'                        \
-        -e 's/__*/_/g'
-}
-
-# quote_for_sed [STRING]
-# ----------------------
-# Return STRING (or stdin) quoted to be used as a sed pattern.
-quote_for_sed ()
-{
-  case $# in
-    0) cat;;
-    1) printf '%s\n' "$1";;
-  esac \
-    | sed -e 's|[][\\.*]|\\&|g'
-}
-
 case "$1" in
   '')
-    echo "$0: No files given.  Try '$0 --help' for more information." 1>&2
+    echo "$0: No files given.  Try \`$0 --help' for more information." 1>&2
     exit 1
     ;;
   --basedir)
@@ -98,8 +67,6 @@ esac
 # The input.
 input="$1"
 shift
-# We'll later need for a correct munging of "#line" directives.
-input_sub_rx=`get_dirname "$input" | quote_for_sed`
 case "$input" in
   [\\/]* | ?:[\\/]*)
     # Absolute path; do nothing.
@@ -109,47 +76,15 @@ case "$input" in
     input="`pwd`/$input"
     ;;
 esac
-input_rx=`get_dirname "$input" | quote_for_sed`
-
-# Since DOS filename conventions don't allow two dots,
-# the DOS version of Bison writes out y_tab.c instead of y.tab.c
-# and y_tab.h instead of y.tab.h. Test to see if this is the case.
-y_tab_nodot=false
-if test -f y_tab.c || test -f y_tab.h; then
-  y_tab_nodot=true
-fi
-
-# The parser itself, the first file, is the destination of the .y.c
-# rule in the Makefile.
-parser=$1
-
-# A sed program to s/FROM/TO/g for all the FROM/TO so that, for
-# instance, we rename #include "y.tab.h" into #include "parse.h"
-# during the conversion from y.tab.c to parse.c.
-sed_fix_filenames=
-
-# Also rename header guards, as Bison 2.7 for instance uses its header
-# guard in its implementation file.
-sed_fix_header_guards=
 
+pairlist=
 while test "$#" -ne 0; do
   if test "$1" = "--"; then
     shift
     break
   fi
-  from=$1
-  # Handle y_tab.c and y_tab.h output by DOS
-  if $y_tab_nodot; then
-    case $from in
-      "y.tab.c") from=y_tab.c;;
-      "y.tab.h") from=y_tab.h;;
-    esac
-  fi
+  pairlist="$pairlist $1"
   shift
-  to=$1
-  shift
-  sed_fix_filenames="${sed_fix_filenames}s|"`quote_for_sed "$from"`"|$to|g;"
-  sed_fix_header_guards="${sed_fix_header_guards}s|"`guard "$from"`"|"`guard "$to"`"|g;"
 done
 
 # The program to run.
@@ -180,56 +115,98 @@ esac
 ret=$?
 
 if test $ret -eq 0; then
-  for from in *
-  do
-    to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"`
+  set X $pairlist
+  shift
+  first=yes
+  # Since DOS filename conventions don't allow two dots,
+  # the DOS version of Bison writes out y_tab.c instead of y.tab.c
+  # and y_tab.h instead of y.tab.h. Test to see if this is the case.
+  y_tab_nodot="no"
+  if test -f y_tab.c || test -f y_tab.h; then
+    y_tab_nodot="yes"
+  fi
+
+  # The directory holding the input.
+  input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
+  # Quote $INPUT_DIR so we can use it in a regexp.
+  # FIXME: really we should care about more than `.' and `\'.
+  input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
+
+  while test "$#" -ne 0; do
+    from="$1"
+    # Handle y_tab.c and y_tab.h output by DOS
+    if test $y_tab_nodot = "yes"; then
+      if test $from = "y.tab.c"; then
+        from="y_tab.c"
+      else
+        if test $from = "y.tab.h"; then
+          from="y_tab.h"
+        fi
+      fi
+    fi
     if test -f "$from"; then
       # If $2 is an absolute path name, then just use that,
-      # otherwise prepend '../'.
-      case $to in
-        [\\/]* | ?:[\\/]*) target=$to;;
-        *) target="../$to";;
+      # otherwise prepend `../'.
+      case "$2" in
+        [\\/]* | ?:[\\/]*) target="$2";;
+        *) target="../$2";;
       esac
 
-      # Do not overwrite unchanged header files to avoid useless
-      # recompilations.  Always update the parser itself: it is the
-      # destination of the .y.c rule in the Makefile.  Divert the
-      # output of all other files to a temporary file so we can
-      # compare them to existing versions.
-      if test $from != $parser; then
+      # We do not want to overwrite a header file if it hasn't
+      # changed.  This avoid useless recompilations.  However the
+      # parser itself (the first file) should always be updated,
+      # because it is the destination of the .y.c rule in the
+      # Makefile.  Divert the output of all other files to a temporary
+      # file so we can compare them to existing versions.
+      if test $first = no; then
         realtarget="$target"
-        target=tmp-`printf '%s\n' "$target" | sed 's|.*[\\/]||g'`
+        target="tmp-`echo $target | sed s/.*[\\/]//g`"
       fi
-
-      # Munge "#line" or "#" directives.  Don't let the resulting
-      # debug information point at an absolute srcdir.  Use the real
-      # output file name, not yy.lex.c for instance.  Adjust the
-      # include guards too.
-      sed -e "/^#/!b"                           \
-          -e "s|$input_rx|$input_sub_rx|"       \
-          -e "$sed_fix_filenames"               \
-          -e "$sed_fix_header_guards"           \
-        "$from" >"$target" || ret=$?
-
-      # Check whether files must be updated.
-      if test "$from" != "$parser"; then
+      # Edit out `#line' or `#' directives.
+      #
+      # We don't want the resulting debug information to point at
+      # an absolute srcdir; it is better for it to just mention the
+      # .y file with no path.
+      #
+      # We want to use the real output file name, not yy.lex.c for
+      # instance.
+      #
+      # We want the include guards to be adjusted too.
+      FROM=`echo "$from" | sed \
+            -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
+            -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
+      TARGET=`echo "$2" | sed \
+            -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
+            -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
+
+      sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
+          -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
+
+      # Check whether header files must be updated.
+      if test $first = no; then
         if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
-          echo "$to is unchanged"
+          echo "$2" is unchanged
           rm -f "$target"
         else
-          echo "updating $to"
+          echo updating "$2"
           mv -f "$target" "$realtarget"
         fi
       fi
     else
-      # A missing file is only an error for the parser.  This is a
-      # blatant hack to let us support using "yacc -d".  If -d is not
-      # specified, don't fail when the header file is "missing".
-      if test "$from" = "$parser"; then
+      # A missing file is only an error for the first file.  This
+      # is a blatant hack to let us support using "yacc -d".  If -d
+      # is not specified, we don't want an error when the header
+      # file is "missing".
+      if test $first = yes; then
         ret=1
       fi
     fi
+    shift
+    shift
+    first=no
   done
+else
+  ret=$?
 fi
 
 # Remove the directory.