Annotation of embedaddon/confuse/support/ylwrap, revision 1.1.1.2
1.1 misho 1: #! /bin/sh
2: # ylwrap - wrapper for lex/yacc invocations.
3:
1.1.1.2 ! misho 4: scriptversion=2018-03-07.03; # UTC
1.1 misho 5:
1.1.1.2 ! misho 6: # Copyright (C) 1996-2018 Free Software Foundation, Inc.
1.1 misho 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
1.1.1.2 ! misho 21: # along with this program. If not, see <https://www.gnu.org/licenses/>.
1.1 misho 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:
1.1.1.2 ! misho 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:
1.1 misho 64: case "$1" in
65: '')
1.1.1.2 ! misho 66: echo "$0: No files given. Try '$0 --help' for more information." 1>&2
1.1 misho 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.
1.1.1.2 ! misho 99: input=$1
1.1 misho 100: shift
1.1.1.2 ! misho 101: # We'll later need for a correct munging of "#line" directives.
! 102: input_sub_rx=`get_dirname "$input" | quote_for_sed`
! 103: case $input in
1.1 misho 104: [\\/]* | ?:[\\/]*)
105: # Absolute path; do nothing.
106: ;;
107: *)
108: # Relative path. Make it absolute.
1.1.1.2 ! misho 109: input=`pwd`/$input
1.1 misho 110: ;;
111: esac
1.1.1.2 ! misho 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=
1.1 misho 134:
1.1.1.2 ! misho 135: while test $# -ne 0; do
! 136: if test x"$1" = x"--"; then
1.1 misho 137: shift
138: break
139: fi
1.1.1.2 ! misho 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=$1
1.1 misho 150: shift
1.1.1.2 ! misho 151: sed_fix_filenames="${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;"
1.1 misho 153: done
154:
155: # The program to run.
1.1.1.2 ! misho 156: prog=$1
1.1 misho 157: shift
158: # Make any relative path in $prog absolute.
1.1.1.2 ! misho 159: case $prog in
1.1 misho 160: [\\/]* | ?:[\\/]*) ;;
1.1.1.2 ! misho 161: *[\\/]*) prog=`pwd`/$prog ;;
1.1 misho 162: esac
163:
164: dirname=ylwrap$$
1.1.1.2 ! misho 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
1.1 misho 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 $ret -eq 0; then
1.1.1.2 ! misho 181: for from in *
! 182: do
! 183: to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"`
1.1 misho 184: if test -f "$from"; then
185: # If $2 is an absolute path name, then just use that,
1.1.1.2 ! misho 186: # otherwise prepend '../'.
! 187: case $to in
! 188: [\\/]* | ?:[\\/]*) target=$to;;
! 189: *) target=../$to;;
1.1 misho 190: esac
191:
1.1.1.2 ! misho 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' "$target" | sed 's|.*[\\/]||g'`
1.1 misho 200: fi
1.1.1.2 ! misho 201:
! 202: # Munge "#line" or "#" directives. Don't let the resulting
! 203: # debug information point at an absolute srcdir. Use the real
! 204: # output file name, not yy.lex.c for instance. Adjust the
! 205: # include guards too.
! 206: sed -e "/^#/!b" \
! 207: -e "s|$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 $to"
1.1 misho 219: mv -f "$target" "$realtarget"
220: fi
221: fi
222: else
1.1.1.2 ! misho 223: # A missing file is only an error for the parser. This is a
! 224: # blatant hack to let us support using "yacc -d". If -d is not
! 225: # specified, don't fail when the header file is "missing".
! 226: if test "$from" = "$parser"; then
1.1 misho 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
1.1.1.2 ! misho 242: # eval: (add-hook 'before-save-hook 'time-stamp)
1.1 misho 243: # time-stamp-start: "scriptversion="
244: # time-stamp-format: "%:y-%02m-%02d.%02H"
1.1.1.2 ! misho 245: # time-stamp-time-zone: "UTC0"
1.1 misho 246: # time-stamp-end: "; # UTC"
247: # End:
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