texi2dvi

这个是LINUX下的GDB调度工具的源码

  fi

  # Get the name of the current directory.  We want the full path
  # because in clean mode we are in tmp, in which case a relative
  # path has no meaning.
  filename_dir=`echo $command_line_filename | sed 's!/[^/]*$!!;s!^$!.!'`
  filename_dir=`cd "$filename_dir" >/dev/null && pwd`

  # Strip directory part but leave extension.
  filename_ext=`basename "$command_line_filename"`
  # Strip extension.
  filename_noext=`echo "$filename_ext" | sed 's/\.[^.]*$//'`
  ext=`echo "$filename_ext" | sed 's/^.*\.//'`

  # _src.  Use same basename since we want to generate aux files with
  # the same basename as the manual.  If --expand, then output the
  # macro-expanded file to here, else copy the original file.
  tmpdir_src=$tmpdir/src
  filename_src=$tmpdir_src/$filename_noext.$ext

  # _xtr.  The file with the user's extra commands.
  tmpdir_xtr=$tmpdir/xtr
  filename_xtr=$tmpdir_xtr/$filename_noext.$ext

  # _bak.  Copies of the previous xref files (another round is run if
  # they differ from the new one).
  tmpdir_bak=$tmpdir/bak

  # Make all those directories and give up if we can't succeed.
  mkdir $tmpdir_src $tmpdir_xtr $tmpdir_bak || exit 1

  # Source file might include additional sources.  Put `.' and
  # directory where source file(s) reside in TEXINPUTS before anything
  # else.  `.' goes first to ensure that any old .aux, .cps,
  # etc. files in ${directory} don't get used in preference to fresher
  # files in `.'.  Include orig_pwd in case we are in clean mode, where
  # we've cd'd to a temp directory.
  common=".$path_sep$orig_pwd$path_sep$filename_dir$path_sep$txincludes$path_sep"
   TEXINPUTS="$common$TEXINPUTS_orig"
  INDEXSTYLE="$common$INDEXSTYLE_orig"

  # If the user explicitly specified the language, use that.
  # Otherwise, if the first line is \input texinfo, assume it's texinfo.
  # Otherwise, guess from the file extension.
  if test -n "$set_language"; then
    language=$set_language
  elif sed 1q "$command_line_filename" | fgrep 'input texinfo' >/dev/null; then
    language=texinfo
  else
    language=
  fi

  # Get the type of the file (latex or texinfo) from the given language
  # we just guessed, or from the file extension if not set yet.
  case ${language:-$filename_ext} in
    [lL]a[tT]e[xX] | *.ltx | *.tex)
      # Assume a LaTeX file.  LaTeX needs bibtex and uses latex for
      # compilation.  No makeinfo.
      bibtex=${BIBTEX:-bibtex}
      makeinfo= # no point in running makeinfo on latex source.
      texindex=${MAKEINDEX:-makeindex}
      if test $oformat = dvi; then
        tex=${LATEX:-latex}
      else
        tex=${PDFLATEX:-pdflatex}
      fi
      ;;

    *)
      # Assume a Texinfo file.  Texinfo files need makeinfo, texindex and tex.
      bibtex=
      texindex=${TEXINDEX:-texindex}
      if test $oformat = dvi; then
        tex=${TEX:-tex}
      else
        tex=${PDFTEX:-pdftex}
      fi
      # Unless required by the user, makeinfo expansion is wanted only
      # if texinfo.tex is too old.
      if test "$expand" = t; then
        makeinfo=${MAKEINFO:-makeinfo}
      else
        # Check if texinfo.tex performs macro expansion by looking for
        # its version.  The version is a date of the form YEAR-MO-DA.
        # We don't need to use [0-9] to match the digits since anyway
        # the comparison with $txiprereq, a number, will fail with non
        # digits.
        txiversion_tex=txiversion.tex
        echo '\input texinfo.tex @bye' >$tmpdir/$txiversion_tex
        # Run in the tmpdir to avoid leaving files.
        eval `cd $tmpdir >/dev/null \
                    && $tex $txiversion_tex 2>/dev/null \
| sed -n 's/^.*\[\(.*\)version \(....\)-\(..\)-\(..\).*$/txiformat=\1 txiversion="\2\3\4"/p'`
        $verbose "texinfo.tex preloaded as \`$txiformat', version is \`$txiversion' ..."
        if test "$txiprereq" -le "$txiversion" >/dev/null 2>&1; then
          makeinfo=
        else
          makeinfo=${MAKEINFO:-makeinfo}
        fi
        # As long as we had to run TeX, offer the user this convenience
        if test "$txiformat" = Texinfo; then
          escape=@
        fi
      fi
      ;;
  esac

  # Expand macro commands in the original source file using Makeinfo.
  # Always use `end' footnote style, since the `separate' style
  #   generates different output (arguably this is a bug in -E).
  # Discard main info output, the user asked to run TeX, not makeinfo.
  if test -n "$makeinfo"; then
    $verbose "Macro-expanding $command_line_filename to $filename_src ..."
    sed -f $comment_iftex_sed "$command_line_filename" \
      | $makeinfo --footnote-style=end -I "$filename_dir" $miincludes \
        -o /dev/null --macro-expand=- \
      | sed -f $uncomment_iftex_sed >"$filename_src"
    filename_input=$filename_src
  fi

  # If makeinfo failed (or was not even run), use the original file as input.
  if test $? -ne 0 \
     || test ! -r "$filename_src"; then
    $verbose "Reverting to $command_line_filename ..."
    filename_input=$filename_dir/$filename_ext
  fi

  # Used most commonly for @finalout, @smallbook, etc.
  if test -n "$textra"; then
    $verbose "Inserting extra commands: $textra"
    sed '/^@setfilename/a\
'"$textra" "$filename_input" >$filename_xtr
    filename_input=$filename_xtr
  fi

  # If clean mode was specified, then move to the temporary directory.
  if test "$clean" = t; then
    $verbose "cd $tmpdir_src"
    cd "$tmpdir_src" || exit 1
  fi

  while :; do # will break out of loop below
    orig_xref_files=`$get_xref_files "$filename_noext"`

    # Save copies of originals for later comparison.
    if test -n "$orig_xref_files"; then
      $verbose "Backing up xref files: `echo $orig_xref_files | sed 's|\./||g'`"
      cp $orig_xref_files $tmpdir_bak
    fi

    # Run bibtex on current file.
    # - If its input (AUX) exists.
    # - If AUX contains both `\bibdata' and `\bibstyle'.
    # - If some citations are missing (LOG contains `Citation').
    #   or the LOG complains of a missing .bbl
    #
    # We run bibtex first, because I can see reasons for the indexes
    # to change after bibtex is run, but I see no reason for the
    # converse.
    #
    # Don't try to be too smart.  Running bibtex only if the bbl file
    # exists and is older than the LaTeX file is wrong, since the
    # document might include files that have changed.  Because there
    # can be several AUX (if there are \include's), but a single LOG,
    # looking for missing citations in LOG is easier, though we take
    # the risk to match false messages.
    if test -n "$bibtex" \
       && test -r "$filename_noext.aux" \
       && test -r "$filename_noext.log" \
       && (grep '^\\bibdata[{]'  "$filename_noext.aux" \
           && grep '^\\bibstyle[{]' "$filename_noext.aux" \
           && (grep 'Warning:.*Citation.*undefined' "$filename_noext.log" \
               || grep 'No file .*\.bbl\.' "$filename_noext.log")) \
          >/dev/null 2>&1; \
    then
      $verbose "Running $bibtex $filename_noext ..."
      if $bibtex "$filename_noext" >&5; then :; else
        echo "$0: $bibtex exited with bad status, quitting." >&2
        exit 1
      fi
    fi

    # What we'll run texindex on -- exclude non-index files.
    # Since we know index files are last, it is correct to remove everything
    # before .aux and .?o?.
    index_files=`echo "$orig_xref_files" \
                 | sed "s!.*\.aux!!g;
                        s!./$filename_noext\..o.!!g;
                        s/^[ ]*//;s/[ ]*$//"`
    # Run texindex (or makeindex) on current index files.  If they
    # already exist, and after running TeX a first time the index
    # files don't change, then there's no reason to run TeX again.
    # But we won't know that if the index files are out of date or
    # nonexistent.
    if test -n "$texindex" && test -n "$index_files"; then
      $verbose "Running $texindex $index_files ..."
      if $texindex $index_files 2>&5 1>&2; then :; else
         echo "$0: $texindex exited with bad status, quitting." >&2
         exit 1
      fi
    fi

    # Finally, run TeX.
    # Prevent $ESCAPE from being interpreted by the shell if it happens
    # to be `/'.
    $batch tex_args="\\${escape}nonstopmode\ \\${escape}input"
    $verbose "Running $cmd ..."
    cmd="$tex $tex_args $filename_input"
    if $cmd >&5; then :; else
      echo "$0: $tex exited with bad status, quitting." >&2
      echo "$0: see $filename_noext.log for errors." >&2
      test "$clean" = t \
        && cp "$filename_noext.log" "$orig_pwd"
      exit 1
    fi


    # Decide if looping again is needed.
    finished=t

    # LaTeX (and the package changebar) report in the LOG file if it
    # should be rerun.  This is needed for files included from
    # subdirs, since texi2dvi does not try to compare xref files in
    # subdirs.  Performing xref files test is still good since LaTeX
    # does not report changes in xref files.
    if fgrep "Rerun to get" "$filename_noext.log" >/dev/null 2>&1; then
      finished=
    fi

    # Check if xref files changed.
    new_xref_files=`$get_xref_files "$filename_noext"`
    $verbose "Original xref files = `echo $orig_xref_files | sed 's|\./||g'`"
    $verbose "New xref files      = `echo $new_xref_files | sed 's|\./||g'`"

    # If old and new lists don't at least have the same file list,
    # then one file or another has definitely changed.
    test "x$orig_xref_files" != "x$new_xref_files" && finished=

    # File list is the same.  We must compare each file until we find
    # a difference.
    if test -n "$finished"; then
      for this_file in $new_xref_files; do
        $verbose "Comparing xref file `echo $this_file | sed 's|\./||g'` ..."
        # cmp -s returns nonzero exit status if files differ.
        if cmp -s "$this_file" "$tmpdir_bak/$this_file"; then :; else
          # We only need to keep comparing until we find one that
          # differs, because we'll have to run texindex & tex again no
          # matter how many more there might be.
          finished=
          $verbose "xref file `echo $this_file | sed 's|\./||g'` differed ..."
          test "$debug" = t && diff -c "$tmpdir_bak/$this_file" "$this_file"
          break
        fi
      done
    fi

    # If finished, exit the loop, else rerun the loop.
    test -n "$finished" && break
  done

  # If we were in clean mode, compilation was in a tmp directory.
  # Copy the DVI (or PDF) file into the directory where the compilation
  # has been done.  (The temp dir is about to get removed anyway.)
  # We also return to the original directory so that
  # - the next file is processed in correct conditions
  # - the temporary file can be removed
  if test -n "$clean"; then
    $verbose "Copying $oformat file from `pwd` to $orig_pwd"
    cp -p "./$filename_noext.$oformat" "$orig_pwd"
    cd / # in case $orig_pwd is on a different drive (for DOS)
    cd $orig_pwd || exit 1
  fi

  # Remove temporary files.
  if test "x$debug" = "x"; then
    $verbose "Removing $tmpdir_src $tmpdir_xtr $tmpdir_bak ..."
    cd /
    rm -rf $tmpdir_src $tmpdir_xtr $tmpdir_bak
  fi
done

$verbose "$0 done."
exit 0 # exit successfully, not however we ended the loop.