source: automake/ylwrap @ 59310bf

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 59310bf was 59310bf, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

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1#! /bin/sh
2# ylwrap - wrapper for lex/yacc invocations.
3
4scriptversion=2013-01-12.17; # UTC
5
6# Copyright (C) 1996-2014 Free Software Foundation, Inc.
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
21# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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
32get_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.
43guard ()
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.
55quote_for_sed ()
56{
57  case $# in
58    0) cat;;
59    1) printf '%s\n' "$1";;
60  esac \
61    | sed -e 's|[][\\.*]|\\&|g'
62}
63
64case "$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
75Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
76
77Wrapper 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
85Any number of OUTPUT,DESIRED pairs may be used.
86
87Report bugs to <bug-automake@gnu.org>.
88EOF
89    exit $?
90    ;;
91  -v|--v*)
92    echo "ylwrap $scriptversion"
93    exit $?
94    ;;
95esac
96
97
98# The input.
99input=$1
100shift
101# We'll later need for a correct munging of "#line" directives.
102input_sub_rx=`get_dirname "$input" | quote_for_sed`
103case $input in
104  [\\/]* | ?:[\\/]*)
105    # Absolute path; do nothing.
106    ;;
107  *)
108    # Relative path.  Make it absolute.
109    input=`pwd`/$input
110    ;;
111esac
112input_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.
117y_tab_nodot=false
118if test -f y_tab.c || test -f y_tab.h; then
119  y_tab_nodot=true
120fi
121
122# The parser itself, the first file, is the destination of the .y.c
123# rule in the Makefile.
124parser=$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.
129sed_fix_filenames=
130
131# Also rename header guards, as Bison 2.7 for instance uses its header
132# guard in its implementation file.
133sed_fix_header_guards=
134
135while 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;"
153done
154
155# The program to run.
156prog=$1
157shift
158# Make any relative path in $prog absolute.
159case $prog in
160  [\\/]* | ?:[\\/]*) ;;
161  *[\\/]*) prog=`pwd`/$prog ;;
162esac
163
164dirname=ylwrap$$
165do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
166trap "ret=129; $do_exit" 1
167trap "ret=130; $do_exit" 2
168trap "ret=141; $do_exit" 13
169trap "ret=143; $do_exit" 15
170mkdir $dirname || exit 1
171
172cd $dirname
173
174case $# in
175  0) "$prog" "$input" ;;
176  *) "$prog" "$@" "$input" ;;
177esac
178ret=$?
179
180if 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
231fi
232
233# Remove the directory.
234cd ..
235rm -rf $dirname
236
237exit $ret
238
239# Local Variables:
240# mode: shell-script
241# sh-indentation: 2
242# eval: (add-hook 'write-file-hooks 'time-stamp)
243# time-stamp-start: "scriptversion="
244# time-stamp-format: "%:y-%02m-%02d.%02H"
245# time-stamp-time-zone: "UTC"
246# time-stamp-end: "; # UTC"
247# End:
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