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1 #! /bin/sh
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2 # texi2dvi --- smartly produce DVI files from texinfo sources
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3
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4 # Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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5
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6 # $Id: texi2dvi,v 1.1.1.1 1996/12/18 03:35:32 steve Exp $
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7
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8 # This program is free software; you can redistribute it and/or modify
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9 # it under the terms of the GNU General Public License as published by
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10 # the Free Software Foundation; either version 2, or (at your option)
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11 # any later version.
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12 #
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU General Public License for more details.
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17 #
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18 # You should have received a copy of the GNU General Public License
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19 # along with this program; if not, you can either send email to this
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20 # program's maintainer or write to: The Free Software Foundation,
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21 # Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
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22
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23 # Commentary:
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24
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25 # Author: Noah Friedman <friedman@prep.ai.mit.edu>
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26
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27 # Please send bug reports, etc. to bug-texinfo@prep.ai.mit.edu
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28 # If possible, please send a copy of the output of the script called with
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29 # the `--debug' option when making a bug report.
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30
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31 # In the interest of general portability, some common bourne shell
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32 # constructs were avoided because they weren't guaranteed to be available
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33 # in some earlier implementations. I've tried to make this program as
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34 # portable as possible. Welcome to unix, where the lowest common
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35 # denominator is rapidly diminishing.
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36 #
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37 # Among the more interesting lossages I noticed with some bourne shells
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38 # are:
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39 # * No shell functions.
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40 # * No `unset' builtin.
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41 # * `shift' cannot take a numeric argument, and signals an error if
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42 # there are no arguments to shift.
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43
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44 # Code:
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45
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46 # Name by which this script was invoked.
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47 progname=`echo "$0" | sed -e 's/[^\/]*\///g'`
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48
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49 # This string is expanded by rcs automatically when this file is checked out.
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50 rcs_revision='$Revision: 1.1.1.1 $'
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51 version=`set - $rcs_revision; echo $2`
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52
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53 # To prevent hairy quoting and escaping later.
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54 bq='`'
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55 eq="'"
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56
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57 usage="Usage: $progname {options} [file1] {file2 {...}}
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58 (version $version)
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59
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60 Options are:
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61 -D, --debug Turn on shell debugging ($bq${bq}set -x$eq$eq).
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62 -h, --help You're looking at it.
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63 -v, --version Print version number.
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64
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65 Arguments in brackets are required. Those in braces are optional.
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66 "
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67
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68 # Initialize variables.
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69 # Don't use `unset' since old bourne shells don't have this command.
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70 # Instead, assign them an empty value.
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71 # Some of these, like TEX and TEXINDEX, may be inherited from the environment
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72 backup_extension=.bak
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73 debug=
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74 orig_pwd="`pwd`"
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75 verbose=
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76 texindex="${TEXINDEX-texindex}"
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77 tex="${TEX-tex}"
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78
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79 # Save this so we can construct a new TEXINPUTS path for each file to be
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80 # processed.
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81 TEXINPUTS_orig="$TEXINPUTS"
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82 export TEXINPUTS
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83
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84 # Parse command line arguments.
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85 # Make sure that all wildcarded options are long enough to be unambiguous.
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86 # It's a good idea to document the full long option name in each case.
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87 # Long options which take arguments will need a `*' appended to the
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88 # canonical name to match the value appended after the `=' character.
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89 while : ; do
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90 case $# in 0) break ;; esac
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91 case "$1" in
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92 -D | --debug | --d* )
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93 debug=t
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94 shift
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95 ;;
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96 -h | --help | --h* )
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97 echo "$usage" 1>&2
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98 exit 0
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99 ;;
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100 -v | --version | --v* )
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101 echo "texi2dvi version $version" 1>&2
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102 exit 0
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103 ;;
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104 -- ) # Stop option processing
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105 shift
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106 break
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107 ;;
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108 -* )
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109 case "$1" in
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110 --*=* ) arg=`echo "$1" | sed -e 's/=.*//'` ;;
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111 * ) arg="$1" ;;
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112 esac
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113 exec 1>&2
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114 echo "$progname: unknown or ambiguous option $bq$arg$eq"
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115 echo "$progname: Use $bq--help$eq for a list of options."
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116 exit 1
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117 ;;
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118 * )
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119 break
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120 ;;
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121 esac
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122 done
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123
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124 # See if there are any command line args left (which will be interpreted as
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125 # filename arguments)
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126 case $# in
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127 0 )
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128 exec 1>&2
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129 echo "$progname: at least one file name is required as an argument."
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130 echo "$progname: Use $bq--help$eq for a description of command syntax."
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131 exit 2
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132 ;;
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133 esac
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134
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135 case "$debug" in t ) set -x ;; esac
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136
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137 # Texify files
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138 for command_line_filename in ${1+"$@"} ; do
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139 # Roughly equivalent to `dirname ...`, but more portable
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140 directory="`echo ${command_line_filename} | sed 's/\/[^\/]*$//'`"
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141 filename_texi="`basename ${command_line_filename}`"
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142 # Strip off the last extension part (probably .texinfo or .texi)
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143 filename_noext="`echo ${filename_texi} | sed 's/\.[^.]*$//'`"
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144
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145 # If directory and file are the same, then it's probably because there's
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146 # no pathname component. Set dirname to `.', the current directory.
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147 if test "z${directory}" = "z${command_line_filename}" ; then
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148 directory="."
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149 fi
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150
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151 # Source file might @include additional texinfo sources. Put `.' and
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152 # directory where source file(s) reside in TEXINPUTS before anything
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153 # else. `.' goes first to ensure that any old .aux, .cps, etc. files in
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154 # ${directory} don't get used in preference to fresher files in `.'.
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155 TEXINPUTS=".:${directory}:${TEXINPUTS_orig}"
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156
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157 # "Unset" variables that might have values from previous iterations and
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158 # which won't be completely reset later.
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159 definite_index_files=""
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160
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161 # See if file exists here. If it doesn't we're in trouble since, even
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162 # though the user may be able to reenter a valid filename at the tex
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163 # prompt (assuming they're attending the terminal), this script won't be
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164 # able to find the right index files and so forth.
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165 if test ! -r "${command_line_filename}" ; then
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166 echo "${progname}: ${command_line_filename}: No such file or permission denied." 1>&2
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167 continue;
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168 fi
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169
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170 # Find all files having root filename with a two-letter extension,
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171 # determine whether they're really index files, and save them. Foo.aux
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172 # is actually the cross-references file, but we need to keep track of
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173 # that too.
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174 possible_index_files="`eval echo ${filename_noext}.?? ${filename_noext}.aux`"
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175 for this_file in ${possible_index_files} ; do
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176 # If file is empty, forget it.
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177 if test ! -s "${this_file}" ; then
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178 continue;
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179 fi
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180
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181 # Examine first character of file. If it's not a backslash or
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182 # single quote, then it's definitely not an index or xref file.
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183 first_character="`sed -n '1s/^\(.\).*$/\1/p;q' ${this_file}`"
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184 if test "${first_character}" = "\\" -o "${first_character}" = "'" ; then
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185 definite_index_files="${definite_index_files} ${this_file}"
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186 fi
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187 done
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188 orig_index_files="${definite_index_files}"
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189 orig_index_files_sans_aux="`echo ${definite_index_files} \
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190 | sed 's/'${filename_noext}'\.aux//;
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191 s/^[ ]*//;s/[ ]*$//;'`"
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192
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193 # Now save copies of original index files so we have some means of
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194 # comparison later.
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195 for index_file_to_save in ${orig_index_files} ; do
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196 cp "${index_file_to_save}" "${index_file_to_save}${backup_extension}"
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197 done
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198
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199 # Run texindex on current index files. If they already exist, and
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200 # after running TeX a first time the index files don't change, then
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201 # there's no reason to run TeX again. But we won't know that if the
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202 # index files are out of date or nonexistent.
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203 if test "${orig_index_files_sans_aux}" ; then
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204 ${texindex} ${orig_index_files_sans_aux}
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205 fi
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206
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207 if ${tex} ${command_line_filename} ; then # TeX run first time
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208 definite_index_files=""
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209 # Get list of new index files
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210 possible_index_files="`eval echo ${filename_noext}.?? ${filename_noext}.aux`"
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211 for this_file in ${possible_index_files} ; do
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212 # If file is empty, forget it.
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213 if test ! -s ${this_file} ; then
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214 continue;
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215 fi
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216
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217 # Examine first character of file. If it's not a backslash or
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218 # single quote, then it's definitely not an index or xref file.
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219 first_character="`sed -n '1s/^\(.\).*$/\1/p;q' ${this_file}`"
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220 if test "${first_character}" = "\\" -o "${first_character}" = "'" ; then
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221 definite_index_files="${definite_index_files} ${this_file}"
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222 fi
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223 done
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224 new_index_files="${definite_index_files}"
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225 new_index_files_sans_aux="`echo ${definite_index_files} \
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226 | sed 's/'${filename_noext}'\.aux//;
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227 s/^[ ]*//;s/[ ]*$//;'`"
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228
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229 # If old and new list don't at least have the same file list, then one
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230 # file or another has definitely changed.
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231 if test "${orig_index_files}" != "${new_index_files}" ; then
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232 index_files_changed_p=t
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233 else
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234 # File list is the same. We must compare each file until we find a
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235 # difference.
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236 index_files_changed_p=""
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237 for this_file in ${new_index_files} ; do
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238 # cmp -s will return nonzero exit status if files differ.
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239 cmp -s "${this_file}" "${this_file}${backup_extension}"
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240 if test $? -ne 0 ; then
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241 # We only need to keep comparing until we find *one* that
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242 # differs, because we'll have to run texindex & tex no
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243 # matter what.
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244 index_files_changed_p=t
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245 break
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246 fi
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247 done
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248 fi
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249
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250 # If index files have changed since TeX has been run, or if the aux
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251 # file wasn't present originally, run texindex and TeX again.
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252 if test "${index_files_changed_p}" ; then
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253 retval=0
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254 if test "${new_index_files_sans_aux}" ; then
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255 ${texindex} ${new_index_files_sans_aux}
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256 retval=$?
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257 fi
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258 if test ${retval} -eq 0 ; then
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259 ${tex} "${command_line_filename}"
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260 fi
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261 fi
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262 fi
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263
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264 # Generate list of files to delete, then call rm once with the entire
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265 # list. This is significantly faster than multiple executions of rm.
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266 file_list=""
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267 for file in ${orig_index_files} ; do
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268 file_list="${file_list} ${file}${backup_extension}"
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269 done
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270 if test "${file_list}" ; then
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271 rm -f ${file_list}
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272 fi
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273 done
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274
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275 # texi2dvi ends here
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