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3 | paul | 1 | #! /bin/sh |
2 | # ylwrap - wrapper for lex/yacc invocations. |
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3875 | mrdocs | 3 | |
4 | scriptversion=2005-05-14.22 |
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5 | |||
6 | # Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005 |
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7 | # Free Software Foundation, Inc. |
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8 | # |
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3 | paul | 9 | # Written by Tom Tromey <tromey@cygnus.com>. |
10 | # |
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11 | # This program is free software; you can redistribute it and/or modify |
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12 | # it under the terms of the GNU General Public License as published by |
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13 | # the Free Software Foundation; either version 2, or (at your option) |
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14 | # any later version. |
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15 | # |
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16 | # This program is distributed in the hope that it will be useful, |
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17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | # GNU General Public License for more details. |
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20 | # |
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21 | # You should have received a copy of the GNU General Public License |
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22 | # along with this program; if not, write to the Free Software |
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3875 | mrdocs | 23 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
24 | # 02110-1301, USA. |
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3 | paul | 25 | |
26 | # As a special exception to the GNU General Public License, if you |
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27 | # distribute this file as part of a program that contains a |
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28 | # configuration script generated by Autoconf, you may include it under |
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29 | # the same distribution terms that you use for the rest of that program. |
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30 | |||
3875 | mrdocs | 31 | # This file is maintained in Automake, please report |
32 | # bugs to <bug-automake@gnu.org> or send patches to |
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33 | # <automake-patches@gnu.org>. |
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3 | paul | 34 | |
3875 | mrdocs | 35 | case "$1" in |
36 | '') |
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37 | echo "$0: No files given. Try \`$0 --help' for more information." 1>&2 |
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38 | exit 1 |
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39 | ;; |
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40 | --basedir) |
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41 | basedir=$2 |
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42 | shift 2 |
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43 | ;; |
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44 | -h|--h*) |
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45 | cat <<\EOF |
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46 | Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... |
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47 | |||
48 | Wrapper for lex/yacc invocations, renaming files as desired. |
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49 | |||
50 | INPUT is the input file |
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51 | OUTPUT is one file PROG generates |
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52 | DESIRED is the file we actually want instead of OUTPUT |
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53 | PROGRAM is program to run |
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54 | ARGS are passed to PROG |
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55 | |||
56 | Any number of OUTPUT,DESIRED pairs may be used. |
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57 | |||
58 | Report bugs to <bug-automake@gnu.org>. |
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59 | EOF |
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60 | exit $? |
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61 | ;; |
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62 | -v|--v*) |
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63 | echo "ylwrap $scriptversion" |
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64 | exit $? |
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65 | ;; |
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66 | esac |
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67 | |||
68 | |||
3 | paul | 69 | # The input. |
70 | input="$1" |
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71 | shift |
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72 | case "$input" in |
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73 | [\\/]* | ?:[\\/]*) |
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74 | # Absolute path; do nothing. |
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75 | ;; |
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76 | *) |
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77 | # Relative path. Make it absolute. |
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78 | input="`pwd`/$input" |
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79 | ;; |
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80 | esac |
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81 | |||
82 | pairlist= |
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83 | while test "$#" -ne 0; do |
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84 | if test "$1" = "--"; then |
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85 | shift |
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86 | break |
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87 | fi |
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88 | pairlist="$pairlist $1" |
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89 | shift |
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90 | done |
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91 | |||
92 | # The program to run. |
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93 | prog="$1" |
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94 | shift |
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95 | # Make any relative path in $prog absolute. |
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96 | case "$prog" in |
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97 | [\\/]* | ?:[\\/]*) ;; |
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98 | *[\\/]*) prog="`pwd`/$prog" ;; |
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99 | esac |
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100 | |||
101 | # FIXME: add hostname here for parallel makes that run commands on |
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102 | # other machines. But that might take us over the 14-char limit. |
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103 | dirname=ylwrap$$ |
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104 | trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 |
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105 | mkdir $dirname || exit 1 |
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106 | |||
107 | cd $dirname |
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108 | |||
3875 | mrdocs | 109 | case $# in |
110 | 0) $prog "$input" ;; |
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111 | *) $prog "$@" "$input" ;; |
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112 | esac |
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113 | ret=$? |
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3 | paul | 114 | |
3875 | mrdocs | 115 | if test $ret -eq 0; then |
3 | paul | 116 | set X $pairlist |
117 | shift |
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118 | first=yes |
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119 | # Since DOS filename conventions don't allow two dots, |
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120 | # the DOS version of Bison writes out y_tab.c instead of y.tab.c |
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121 | # and y_tab.h instead of y.tab.h. Test to see if this is the case. |
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122 | y_tab_nodot="no" |
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123 | if test -f y_tab.c || test -f y_tab.h; then |
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124 | y_tab_nodot="yes" |
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125 | fi |
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126 | |||
3875 | mrdocs | 127 | # The directory holding the input. |
128 | input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'` |
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129 | # Quote $INPUT_DIR so we can use it in a regexp. |
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130 | # FIXME: really we should care about more than `.' and `\'. |
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131 | input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'` |
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132 | |||
3 | paul | 133 | while test "$#" -ne 0; do |
134 | from="$1" |
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135 | # Handle y_tab.c and y_tab.h output by DOS |
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136 | if test $y_tab_nodot = "yes"; then |
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137 | if test $from = "y.tab.c"; then |
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138 | from="y_tab.c" |
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139 | else |
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140 | if test $from = "y.tab.h"; then |
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141 | from="y_tab.h" |
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142 | fi |
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143 | fi |
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144 | fi |
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145 | if test -f "$from"; then |
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146 | # If $2 is an absolute path name, then just use that, |
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147 | # otherwise prepend `../'. |
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148 | case "$2" in |
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149 | [\\/]* | ?:[\\/]*) target="$2";; |
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150 | *) target="../$2";; |
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151 | esac |
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152 | |||
3875 | mrdocs | 153 | # We do not want to overwrite a header file if it hasn't |
154 | # changed. This avoid useless recompilations. However the |
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155 | # parser itself (the first file) should always be updated, |
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156 | # because it is the destination of the .y.c rule in the |
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157 | # Makefile. Divert the output of all other files to a temporary |
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158 | # file so we can compare them to existing versions. |
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159 | if test $first = no; then |
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160 | realtarget="$target" |
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161 | target="tmp-`echo $target | sed s/.*[\\/]//g`" |
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162 | fi |
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163 | # Edit out `#line' or `#' directives. |
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164 | # |
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165 | # We don't want the resulting debug information to point at |
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166 | # an absolute srcdir; it is better for it to just mention the |
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167 | # .y file with no path. |
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168 | # |
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169 | # We want to use the real output file name, not yy.lex.c for |
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170 | # instance. |
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171 | # |
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172 | # We want the include guards to be adjusted too. |
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173 | FROM=`echo "$from" | sed \ |
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174 | -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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175 | -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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176 | TARGET=`echo "$2" | sed \ |
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177 | -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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178 | -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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179 | |||
180 | sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ |
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181 | -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? |
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182 | |||
183 | # Check whether header files must be updated. |
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184 | if test $first = no; then |
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185 | if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
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186 | echo "$2" is unchanged |
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187 | rm -f "$target" |
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188 | else |
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189 | echo updating "$2" |
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190 | mv -f "$target" "$realtarget" |
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191 | fi |
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192 | fi |
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3 | paul | 193 | else |
194 | # A missing file is only an error for the first file. This |
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195 | # is a blatant hack to let us support using "yacc -d". If -d |
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196 | # is not specified, we don't want an error when the header |
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197 | # file is "missing". |
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198 | if test $first = yes; then |
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3875 | mrdocs | 199 | ret=1 |
3 | paul | 200 | fi |
201 | fi |
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202 | shift |
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203 | shift |
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204 | first=no |
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205 | done |
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206 | else |
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3875 | mrdocs | 207 | ret=$? |
3 | paul | 208 | fi |
209 | |||
210 | # Remove the directory. |
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211 | cd .. |
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212 | rm -rf $dirname |
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213 | |||
3875 | mrdocs | 214 | exit $ret |
215 | |||
216 | # Local Variables: |
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217 | # mode: shell-script |
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218 | # sh-indentation: 2 |
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219 | # eval: (add-hook 'write-file-hooks 'time-stamp) |
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220 | # time-stamp-start: "scriptversion=" |
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221 | # time-stamp-format: "%:y-%02m-%02d.%02H" |
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222 | # time-stamp-end: "$" |
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223 | # End: |