texi2dvi

这个是LINUX下的GDB调度工具的源码

#! /bin/sh
# texi2dvi --- produce DVI (or PDF) files from Texinfo (or LaTeX) sources.
# $Id: texi2dvi,v 0.43 1999/09/28 19:36:53 karl Exp $
#
# Copyright (C) 1992, 93, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
#
# 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, you can either send email to this
# program's maintainer or write to: The Free Software Foundation,
# Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
#
# Original author: Noah Friedman <[e-mail]>.
#
# Please send bug reports, etc. to [e-mail].
# If possible, please send a copy of the output of the script called with
# the `--debug' option when making a bug report.

# This string is expanded by rcs automatically when this file is checked out.
rcs_revision='$Revision: 0.43 $'
rcs_version=`set - $rcs_revision; echo $2`
program=`echo $0 | sed -e 's!.*/!!'`
version="texi2dvi (GNU Texinfo 4.0) $rcs_version

Copyright (C) 1999 Free Software Foundation, Inc.
There is NO warranty.  You may redistribute this software
under the terms of the GNU General Public License.
For more information about these matters, see the files named COPYING."

usage="Usage: $program [OPTION]... FILE...

Run each Texinfo or LaTeX FILE through TeX in turn until all
cross-references are resolved, building all indices.  The directory
containing each FILE is searched for included files.  The suffix of FILE
is used to determine its language (LaTeX or Texinfo).

Makeinfo is used to perform Texinfo macro expansion before running TeX
when needed.

Options:
  -@                   Use @input instead of \input; for preloaded Texinfo.
  -b, --batch          No interaction.
  -c, --clean          Remove all auxiliary files.
  -D, --debug          Turn on shell debugging (set -x).
  -e, --expand         Force macro expansion using makeinfo.
  -I DIR               Search DIR for Texinfo files.
  -h, --help           Display this help and exit successfully.
  -l, --language=LANG  Specify the LANG of FILE: LaTeX or Texinfo.
  -p, --pdf            Use pdftex or pdflatex for processing.
  -q, --quiet          No output unless errors (implies --batch).
  -s, --silent         Same as --quiet.
  -t, --texinfo=CMD    Insert CMD after @setfilename in copy of input file.
                       Multiple values accumulate.
  -v, --version        Display version information and exit successfully.
  -V, --verbose        Report on what is done.

The values of the BIBTEX, LATEX (or PDFLATEX), MAKEINDEX, MAKEINFO,
TEX (or PDFTEX), and TEXINDEX environment variables are used to run
those commands, if they are set.

Email bug reports to <[e-mail]>,
general questions and discussion to <[e-mail]>."

# Initialize variables for option overriding and otherwise.
# Don't use `unset' since old bourne shells don't have this command.
# Instead, assign them an empty value.
escape='\'
batch=false     # eval for batch mode
clean=
debug=
expand=         # t for expansion via makeinfo
oformat=dvi
set_language=
miincludes=     # makeinfo include path
textra=
tmpdir=${TMPDIR:-/tmp}/t2d$$  # avoid collisions on 8.3 filesystems.
txincludes=     # TEXINPUTS extensions
txiprereq=19990129 # minimum texinfo.tex version to have macro expansion
quiet=          # by default let the tools' message be displayed
verbose=false   # echo for verbose mode

orig_pwd=`pwd`

# Systems which define $COMSPEC or $ComSpec use semicolons to separate
# directories in TEXINPUTS.
if test -n "$COMSPEC$ComSpec"; then
  path_sep=";"
else
  path_sep=":"
fi

# Save this so we can construct a new TEXINPUTS path for each file.
TEXINPUTS_orig="$TEXINPUTS"
# Unfortunately makeindex does not read TEXINPUTS.
INDEXSTYLE_orig="$INDEXSTYLE"
export TEXINPUTS INDEXSTYLE

# Push a token among the arguments that will be used to notice when we
# ended options/arguments parsing.
# Use "set dummy ...; shift" rather than 'set - ..." because on
# Solaris set - turns off set -x (but keeps set -e).
# Use ${1+"$@"} rather than "$@" because Digital Unix and Ultrix 4.3
# still expand "$@" to a single argument (the empty string) rather
# than nothing at all.
arg_sep="$$--$$"
set dummy ${1+"$@"} "$arg_sep"; shift

# 
# Parse command line arguments.
while test x"$1" != x"$arg_sep"; do

  # Handle --option=value by splitting apart and putting back on argv.
  case "$1" in
    --*=*)
      opt=`echo "$1" | sed -e 's/=.*//'`
      val=`echo "$1" | sed -e 's/[^=]*=//'`
      shift
      set dummy "$opt" "$val" ${1+"$@"}; shift
      ;;
  esac

  # This recognizes --quark as --quiet.  So what.
  case "$1" in
    -@ ) escape=@;;
    # Silently and without documentation accept -b and --b[atch] as synonyms.
    -b | --b*) batch=eval;;
    -q | -s | --q* | --s*) quiet=t; batch=eval;;
    -c | --c*) clean=t;;
    -D | --d*) debug=t;;
    -e | --e*) expand=t;;
    -h | --h*) echo "$usage"; exit 0;;
    -I | --I*)
      shift
      miincludes="$miincludes -I $1"
      txincludes="$txincludes$path_sep$1"
      ;;
    -l | --l*) shift; set_language=$1;;
    -p | --p*) oformat=pdf;;
    -t | --t*) shift; textra="$textra\\
$1";;
    -v | --vers*) echo "$version"; exit 0;;
    -V | --verb*) verbose=echo;;
    --) # What remains are not options.
      shift
      while test x"$1" != x"$arg_sep"; do
        set dummy ${1+"$@"} "$1"; shift
        shift
      done
      break;;
    -*)
      echo "$0: Unknown or ambiguous option \`$1'." >&2
      echo "$0: Try \`--help' for more information." >&2
      exit 1;;
    *) set dummy ${1+"$@"} "$1"; shift;;
   esac
   shift
done
# Pop the token
shift

# Interpret remaining command line args as filenames.
if test $# = 0; then
  echo "$0: Missing file arguments." >&2
  echo "$0: Try \`--help' for more information." >&2
  exit 2
fi

# Prepare the temporary directory.  Remove it at exit, unless debugging.
if test -z "$debug"; then
  trap "cd / && rm -rf $tmpdir" 0 1 2 15
fi

# Create the temporary directory with strict rights
(umask 077 && mkdir $tmpdir) || exit 1

# Prepare the tools we might need.  This may be extra work in some
# cases, but improves the readibility of the script.
utildir=$tmpdir/utils
mkdir $utildir || exit 1

# A sed script that preprocesses Texinfo sources in order to keep the
# iftex sections only.  We want to remove non TeX sections, and
# comment (with `@c texi2dvi') TeX sections so that makeinfo does not
# try to parse them.  Nevertheless, while commenting TeX sections,
# don't comment @macro/@end macro so that makeinfo does propagate
# them.  Unfortunately makeinfo --iftex --no-ifhtml --no-ifinfo
# doesn't work well enough (yet) to use that, so work around with sed.
comment_iftex_sed=$utildir/comment.sed
cat <<EOF >$comment_iftex_sed
/^@tex/,/^@end tex/{
  s/^/@c texi2dvi/
}
/^@iftex/,/^@end iftex/{
  s/^/@c texi2dvi/
  /^@c texi2dvi@macro/,/^@c texi2dvi@end macro/{
    s/^@c texi2dvi//
  }
}
/^@html/,/^@end html/d
/^@ifhtml/,/^@end ifhtml/d
/^@ifnottex/,/^@end ifnottex/d
/^@ifinfo/,/^@end ifinfo/{
  /^@node/p
  /^@menu/,/^@end menu/p
  d
}
EOF
# Uncommenting is simple: Remove any leading `@c texi2dvi'.
uncomment_iftex_sed=$utildir/uncomment.sed
cat <<EOF >$uncomment_iftex_sed
s/^@c texi2dvi//
EOF

# A shell script that computes the list of xref files.
# Takes the filename (without extension) of which we look for xref
# files as argument.  The index files must be reported last.
get_xref_files=$utildir/get_xref.sh
cat <<\EOF >$get_xref_files
#! /bin/sh

# Get list of xref files (indexes, tables and lists).
# Find all files having root filename with a two-letter extension,
# saves the ones that are really Texinfo-related files.  .?o? catches
# LaTeX tables and lists.
for this_file in "$1".?o? "$1".aux "$1".?? "$1".idx; do
  # If file is empty, skip it.
  test -s "$this_file" || continue
  # If the file is not suitable to be an index or xref file, don't
  # process it.  The file can't be if its first character is not a
  # backslash or single quote.
  first_character=`sed -n '1s/^\(.\).*$/\1/p;q' $this_file`
  if test "x$first_character" = "x\\" \
     || test "x$first_character" = "x'"; then
    xref_files="$xref_files ./$this_file"
  fi
done
echo "$xref_files"
EOF
chmod 500 $get_xref_files

# File descriptor usage:
# 0 standard input
# 1 standard output (--verbose messages)
# 2 standard error
# 3 some systems may open it to /dev/tty
# 4 used on the Kubota Titan
# 5 tools output (turned off by --quiet)

# Tools' output.  If quiet, discard, else redirect to the message flow.
if test "$quiet" = t; then
  exec 5>/dev/null
else
  exec 5>&1
fi

# Enable tracing
test "$debug" = t && set -x

# 
# TeXify files.

for command_line_filename in ${1+"$@"}; do
  $verbose "Processing $command_line_filename ..."

  # If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
  # prepend `./' in order to avoid that the tools take it as an option.
  echo "$command_line_filename" | egrep '^(/|[A-z]:/)' >/dev/null \
  || command_line_filename="./$command_line_filename"

  # See if the file exists.  If it doesn't we're in trouble since, even
  # though the user may be able to reenter a valid filename at the tex
  # prompt (assuming they're attending the terminal), this script won't
  # be able to find the right xref files and so forth.
  if test ! -r "$command_line_filename"; then
    echo "$0: Could not read $command_line_filename, skipping." >&2
    continue