[irc/ircd-hybrid/hopm.git] / ylwrap

#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.

scriptversion=2018-03-07.03; # UTC

# Copyright (C) 1996-2021 Free Software Foundation, Inc.
#
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# This file is maintained in Automake, please report
# 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
    exit 1
    ;;
  --basedir)
    basedir=$2
    shift 2
    ;;
  -h|--h*)
    cat <<\EOF
Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...

Wrapper for lex/yacc invocations, renaming files as desired.

  INPUT is the input file
  OUTPUT is one file PROG generates
  DESIRED is the file we actually want instead of OUTPUT
  PROGRAM is program to run
  ARGS are passed to PROG

Any number of OUTPUT,DESIRED pairs may be used.

Report bugs to <bug-automake@gnu.org>.
EOF
    exit $?
    ;;
  -v|--v*)
    echo "ylwrap $scriptversion"
    exit $?
    ;;
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 $input in
  [\\/]* | ?:[\\/]*)
    # Absolute path; do nothing.
    ;;
  *)
    # Relative path.  Make it absolute.
    input=`pwd`/$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=

while test $# -ne 0; do
  if test x"$1" = x"--"; 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
  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.
prog=$1
shift
# Make any relative path in $prog absolute.
case $prog in
  [\\/]* | ?:[\\/]*) ;;
  *[\\/]*) prog=`pwd`/$prog ;;
esac

dirname=ylwrap$$
do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
trap "ret=129; $do_exit" 1
trap "ret=130; $do_exit" 2
trap "ret=141; $do_exit" 13
trap "ret=143; $do_exit" 15
mkdir $dirname || exit 1

cd $dirname

case $# in
  0) "$prog" "$input" ;;
  *) "$prog" "$@" "$input" ;;
esac
ret=$?

if test $ret -eq 0; then
  for from in *
  do
    to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"`
    if test -f "$from"; then
      # If $2 is an absolute path name, then just use that,
      # otherwise prepend '../'.
      case $to in
        [\\/]* | ?:[\\/]*) target=$to;;
        *) target=../$to;;
      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 != $parser; then
        realtarget=$target
        target=tmp-`printf '%s\n' "$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
        if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
          echo "$to is unchanged"
          rm -f "$target"
        else
          echo "updating $to"
          mv -f "$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
        ret=1
      fi
    fi
  done
fi

# Remove the directory.
cd ..
rm -rf $dirname

exit $ret

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:
Commit	Line	Data
58b49dac	1	#! /bin/sh
	2	# ylwrap - wrapper for lex/yacc invocations.
	3
b5e0697b	4	scriptversion=2018-03-07.03; # UTC
58b49dac	5
bdb120d6	6	# Copyright (C) 1996-2021 Free Software Foundation, Inc.
58b49dac	7	#
	8	# Written by Tom Tromey <tromey@cygnus.com>.
	9	#
	10	# This program is free software; you can redistribute it and/or modify
	11	# it under the terms of the GNU General Public License as published by
	12	# the Free Software Foundation; either version 2, or (at your option)
	13	# any later version.
	14	#
	15	# This program is distributed in the hope that it will be useful,
	16	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	# GNU General Public License for more details.
	19	#
	20	# You should have received a copy of the GNU General Public License
b5e0697b	21	# along with this program. If not, see <https://www.gnu.org/licenses/>.
58b49dac	22
	23	# As a special exception to the GNU General Public License, if you
	24	# distribute this file as part of a program that contains a
	25	# configuration script generated by Autoconf, you may include it under
	26	# the same distribution terms that you use for the rest of that program.
	27
	28	# This file is maintained in Automake, please report
	29	# bugs to <bug-automake@gnu.org> or send patches to
	30	# <automake-patches@gnu.org>.
	31
	32	get_dirname ()
	33	{
	34	case $1 in
	35	/\|\\) printf '%s\n' "$1" \| sed -e 's\|\([\\/]\)[^\\/]*$\|\1\|';;
	36	# Otherwise, we want the empty string (not ".").
	37	esac
	38	}
	39
	40	# guard FILE
	41	# ----------
	42	# The CPP macro used to guard inclusion of FILE.
	43	guard ()
	44	{
	45	printf '%s\n' "$1" \
	46	\| sed \
	47	-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
	48	-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g' \
	49	-e 's/__*/_/g'
	50	}
	51
	52	# quote_for_sed [STRING]
	53	# ----------------------
	54	# Return STRING (or stdin) quoted to be used as a sed pattern.
	55	quote_for_sed ()
	56	{
	57	case $# in
	58	0) cat;;
	59	1) printf '%s\n' "$1";;
	60	esac \
	61	\| sed -e 's\|[][\\.*]\|\\&\|g'
	62	}
	63
	64	case "$1" in
	65	'')
	66	echo "$0: No files given. Try '$0 --help' for more information." 1>&2
	67	exit 1
	68	;;
	69	--basedir)
	70	basedir=$2
	71	shift 2
	72	;;
	73	-h\|--h*)
	74	cat <<\EOF
	75	Usage: ylwrap [--help\|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
	76
	77	Wrapper for lex/yacc invocations, renaming files as desired.
	78
	79	INPUT is the input file
	80	OUTPUT is one file PROG generates
	81	DESIRED is the file we actually want instead of OUTPUT
	82	PROGRAM is program to run
	83	ARGS are passed to PROG
	84
	85	Any number of OUTPUT,DESIRED pairs may be used.
86
87	Report bugs to <bug-automake@gnu.org>.
88	EOF
89	exit $?
90	;;
91	-v\|--v*)
92	echo "ylwrap $scriptversion"
93	exit $?
94	;;
95	esac
96
97
98	# The input.
99	input=$1
100	shift
101	# We'll later need for a correct munging of "#line" directives.
102	input_sub_rx=`get_dirname "$input" \| quote_for_sed`
103	case $input in
104	[\\/]* \| ?:[\\/]*)
105	# Absolute path; do nothing.
106	;;
107	*)
108	# Relative path. Make it absolute.
109	input=`pwd`/$input
110	;;
111	esac
112	input_rx=`get_dirname "$input" \| quote_for_sed`
113
114	# Since DOS filename conventions don't allow two dots,
115	# the DOS version of Bison writes out y_tab.c instead of y.tab.c
116	# and y_tab.h instead of y.tab.h. Test to see if this is the case.
117	y_tab_nodot=false
118	if test -f y_tab.c \|\| test -f y_tab.h; then
119	y_tab_nodot=true
120	fi
121
122	# The parser itself, the first file, is the destination of the .y.c
123	# rule in the Makefile.
124	parser=$1
125
126	# A sed program to s/FROM/TO/g for all the FROM/TO so that, for
127	# instance, we rename #include "y.tab.h" into #include "parse.h"
128	# during the conversion from y.tab.c to parse.c.
129	sed_fix_filenames=
130
131	# Also rename header guards, as Bison 2.7 for instance uses its header
132	# guard in its implementation file.
133	sed_fix_header_guards=
134
135	while test $# -ne 0; do
136	if test x"$1" = x"--"; then
137	shift
138	break
139	fi
140	from=$1
141	# Handle y_tab.c and y_tab.h output by DOS
142	if $y_tab_nodot; then
143	case $from in
144	"y.tab.c") from=y_tab.c;;
145	"y.tab.h") from=y_tab.h;;
146	esac
147	fi
148	shift
149	to=$1
150	shift
151	sed_fix_filenames="${sed_fix_filenames}s\|"`quote_for_sed "$from"`"\|$to\|g;"
152	sed_fix_header_guards="${sed_fix_header_guards}s\|"`guard "$from"`"\|"`guard "$to"`"\|g;"
153	done
154
155	# The program to run.
156	prog=$1
157	shift
158	# Make any relative path in $prog absolute.
159	case $prog in
160	[\\/]* \| ?:[\\/]*) ;;
161	[\\/]) prog=`pwd`/$prog ;;
162	esac
163
164	dirname=ylwrap$$
165	do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
166	trap "ret=129; $do_exit" 1
167	trap "ret=130; $do_exit" 2
168	trap "ret=141; $do_exit" 13
169	trap "ret=143; $do_exit" 15
170	mkdir $dirname \|\| exit 1
171
172	cd $dirname
173
174	case $# in
175	0) "$prog" "$input" ;;
176	*) "$prog" "$@" "$input" ;;
177	esac
178	ret=$?
179
180	if test $ret -eq 0; then
181	for from in *
182	do
183	to=`printf '%s\n' "$from" \| sed "$sed_fix_filenames"`
184	if test -f "$from"; then
185	# If $2 is an absolute path name, then just use that,
186	# otherwise prepend '../'.
187	case $to in
188	[\\/]* \| ?:[\\/]*) target=$to;;
189	*) target=../$to;;
190	esac
191
192	# Do not overwrite unchanged header files to avoid useless
193	# recompilations. Always update the parser itself: it is the
194	# destination of the .y.c rule in the Makefile. Divert the
195	# output of all other files to a temporary file so we can
196	# compare them to existing versions.
197	if test $from != $parser; then
198	realtarget=$target
199	target=tmp-`printf '%s\n' "$target" \| sed 's\|.*[\\/]\|\|g'`
200	fi
201
202	# Munge "#line" or "#" directives. Don't let the resulting
203	# debug information point at an absolute srcdir. Use the real
204	# output file name, not yy.lex.c for instance. Adjust the
205	# include guards too.
206	sed -e "/^#/!b" \
207	-e "s\|$input_rx\|$input_sub_rx\|" \
208	-e "$sed_fix_filenames" \
209	-e "$sed_fix_header_guards" \
210	"$from" >"$target" \|\| ret=$?
211
212	# Check whether files must be updated.
213	if test "$from" != "$parser"; then
214	if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
215	echo "$to is unchanged"
216	rm -f "$target"
217	else
218	echo "updating $to"
219	mv -f "$target" "$realtarget"
220	fi
221	fi
222	else
223	# A missing file is only an error for the parser. This is a
224	# blatant hack to let us support using "yacc -d". If -d is not
225	# specified, don't fail when the header file is "missing".
226	if test "$from" = "$parser"; then
227	ret=1
228	fi
229	fi
230	done
231	fi
232
233	# Remove the directory.
234	cd ..
235	rm -rf $dirname
236
237	exit $ret
238
239	# Local Variables:
240	# mode: shell-script
241	# sh-indentation: 2
b5e0697b	242	# eval: (add-hook 'before-save-hook 'time-stamp)
58b49dac	243	# time-stamp-start: "scriptversion="
58b49dac	244	# time-stamp-format: "%:y-%02m-%02d.%02H"
3f2f5fbb	245	# time-stamp-time-zone: "UTC0"
58b49dac	246	# time-stamp-end: "; # UTC"
58b49dac	247	# End: