summaryrefslogtreecommitdiff
path: root/Master/bin/i386-freebsd/texlinks
blob: f84f55a95bdb870a78d3c4ea1667acdb583a4e44 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
#!/bin/sh

# Thomas Esser, 1999, 2002, 2003. public domain.

# texlinks: script to maintain symlinks from format to engine. Interprets
# the lines given in fmtutil.cnf.

# History:
#   Sun Aug 28 21:41:06 CEST 2005
#      remove special cases for csplain,cslatex,pdfcslatex,pdfcsplain
#   Fr Apr  8 19:15:05 CEST 2005
#      cleanup now has an argument for the return code
#   So Mär 27 18:52:06 CEST 2005
#       honor $TMPDIR, $TEMP and $TMP, not just $TMP
#   Mon May 10 20:52:48 CEST 2004
#       kpseaccess instead of access
#   Thu Dec 25 22:11:53 CET 2003, te:
#       add version string
#   Tue Apr  9 22:46:34 CEST 2002, te:
#       do not create symlinks for cont-??, metafun and mptopdf

test -f /bin/sh5 && test -z "$RUNNING_SH5" \
  && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
  && { RUNNING_SH5=true; export RUNNING_SH5; exec /bin/sh5 $0 ${1+"$@"}; }
unset RUNNING_SH5

test -f /bin/bsh && test -z "$RUNNING_BSH" \
  && { UNAMES=`uname -s`; test "x$UNAMES" = xAIX; } 2>/dev/null \
  && { RUNNING_BSH=true; export RUNNING_BSH; exec /bin/bsh $0 ${1+"$@"}; }
unset RUNNING_BSH

export PATH

# hack around a bug in zsh:
test -n "${ZSH_VERSION+set}" && alias -g '${1+"$@"}'='"$@"'

cnf=fmtutil.cnf   # name of the config file
version=1169050907 # seconds since `00:00:00 1970-01-01 UTC'
                   # date '+%s' (with GNU date)
progname=texlinks

usage='texlinks [options] [directories]

Create symbolic links format -> engine according to fmtutil setup.

Valid options:
  --help
  -h                    show this help text
  --version             show version string
  --cnffile file
  -f file               use file as config file (default: fmtutil.cnf)
  --verbose
  -v                    set verbose mode on (default: off)
  --multiplatform
  -m                    operate in all platform specific directories
                        (default: operate only in directory for this platform)
  --silent
  -s                    silently skip over existing scripts / binaries
                        instead of creating a warning

directories is an optional list of directories in which to operate.
If no directories are specified the list of directories depends on the
--multiplatform option.
'

###############################################################################
# abort(errmsg)
#   print `errmsg' to stderr and exit with error code 1
###############################################################################
abort() { errmsg "texlinks: $1."; cleanup 1; }

# error message to stderr:
errmsg() { echo "$@" >&2; }

# give message to stderr only if "verbose" mode is on:
verbose_echo() { $verbose && errmsg "$@"; }

# in verbose mode: show command that is executed:
verbose_do() { verbose_echo "$@"; "$@"; }

###############################################################################
# cleanup()
#   clean up the temp area and exit with proper exit status
###############################################################################
cleanup()
{
  rc=$1
  $needsCleanup && test -n "$tmpdir" && test -d "$tmpdir" \
    && { rm -f "$tmpdir"/*; cd /; rmdir "$tmpdir"; }
  exit $rc
}

###############################################################################
# setupTmpDir()
#   set up a temp directory and a trap to remove it
###############################################################################
setupTmpDir()
{
  $needsCleanup && return

  trap 'cleanup 1' 1 2 3 7 13 15
  needsCleanup=true
  (umask 077; mkdir "$tmpdir") \
    || abort "could not create directory \`$tmpdir'"
}


# search a binary along $PATH:
check_for_binary()
{
  testbin=$1
  set x `echo "$PATH" | sed 's/^:/.:/; s/:$/:./; s/::/:.:/g; s/:/ /g'`; shift
  for i
  do
    if [ -x "$i/$testbin" ]; then
      echo "$i/$testbin"
      return 0
    fi
  done
  return 1
}


###############################################################################
# install_link(dest src)
#   create a symlink like ln -s dest src, but make sure that src is not
#   an existing binary
###############################################################################
install_link()
{
  # make symlink    src -> dest
  dest=$1; src=$2

  case $src in
    */mf)
      if test "$dest" = mf-nowin; then
        if test -f $selfautoloc/mfw; then
          dest=mfw  # name for windows-enabled mf, once upon a time
          verbose_echo "both mfw and mf-nowin exists, $src linked to $dest"
        fi
        if test -f $selfautoloc/mf && test -f $selfautoloc/mf-nowin; then
          # have both mf and mf-nowin binaries.  no link.
          verbose_echo "metafont symlink $src -> $dest skipped (special case)"
          return
        fi
      fi
      ;;
  esac

  case $src in
    */cont-??|*/metafun|*/mptopdf)
      verbose_echo "symlink $src -> $dest skipped (special case)"
      ;;
    *)
      test "x$src" != "x`(ls -ld $src | awk '{print $NF}') 2>/dev/null`" &&
        verbose_do rm -f "$src"
  
      if test -f "$src"; then
        case $silent in
          true)
            ;;
          *)
            errmsg "install_link $src -> $dest failed: file already exists."
            ;;
        esac
      else
        verbose_do ln -s "$dest" "$src"
      fi
      ;;
   esac
}

###############################################################################
# search_symlinkdir()
#   look if $PATH has only symlinks to the real binaries and find that
#   directory. Also check if this directory is writable.
###############################################################################
search_symlinkdir()
{
  kpsewhich=`check_for_binary kpsewhich`
  test -z "$kpsewhich" && return 1
  symlinkdir=`echo $kpsewhich | sed 's@/*kpsewhich$@@'`
  kpseaccess -w "$symlinkdir" || return 1
  touch "$symlinkdir/tl$$"
  if test -f "$selfautoloc/tl$$"; then
    rm -f "$symlinkdir/tl$$"
    return 1
  else
    rm -f "$symlinkdir/tl$$"
    return 0
  fi
}

###############################################################################
# upd_symlinkdir()
#   if $PATH has only symlinks to the real binaries, update that directory
#   that holds the symlinks
###############################################################################
upd_symlinkdir()
{
  search_symlinkdir || return 0
  for i in `sed 's@ .*@@' cnf_file_ln.$$`; do
    install_link "$selfautoloc/$i" "$symlinkdir/$i"
  done
}

###############################################################################
# main()
#   parse commandline arguments, initialize variables,
#   switch into temp. direcrory, execute desired command
###############################################################################
main()
{
  cnf_file=    # global variable: full name of the config file
  dirs=
  needsCleanup=false

  multiplatform=false
  verbose=false
  silent=false
  thisdir=`pwd`
  : ${KPSE_DOT=$thisdir}; export KPSE_DOT
  selfautoloc=`kpsewhich --expand-var='$SELFAUTOLOC'`
  while 
    case $1 in
      --h*|-h)
          echo "$usage"; exit 0;;
      --version)
          echo "$progname version $version."; exit 0;;
      --cnffile|-f)
          shift; cnf_file=$1;;
      --v*|-v) verbose=true;;
      --s*|-s) silent=true;;
      --m*|-m) multiplatform=true;;
      -*) errmsg "fmtutil: unknown option \`$1' ignored.";;
      *)  break;;
    esac
  do test $# -gt 0 && shift; done
  dirs="$*"

  # if no cnf_file from command-line, look it up with kpsewhich:
  test -z "$cnf_file" && cnf_file=`kpsewhich --format='web2c files' $cnf`
  test -f "$cnf_file" || abort "config file \`$cnf' not found"


  tmpdir=${TMPDIR-${TEMP-${TMP-/tmp}}}/texlinks.$$
  setupTmpDir
  cd "$tmpdir" || cleanup 1

  sed '/^[ 	]*#/d; /^[ 	]*$/d' $cnf_file \
    | awk '{print $1, $2}' > cnf_file_ln.$$

  if test -z "$dirs"; then
    if test $multiplatform = true; then
      case $selfautoloc in
        */bin) dirs=$selfautoloc;;
        *)     parent=`kpsewhich --expand-var='$SELFAUTODIR'`
               dirs=`find $parent -type f -name kpsewhich -print \
                       | sed 's@/kpsewhich$@@'`;;
      esac
    else
      dirs=$selfautoloc
    fi
  fi
  
  for d in $dirs; do
    kpseaccess -w $d \
      || { errmsg "$d: no write permissions. Skipping..."; continue; }
    # cnf_file_ln.$$ has lines with "format engine" pairs
    set x `cat cnf_file_ln.$$`; shift
    while test $# != 0; do
      fmt=$1; engine=$2; shift; shift

      # Some broken shells destroy the positional arguments when calling a
      # shellfunction. Therefore, we save and restore them "by hand" in the
      # main_args_while variable.
      main_args_while="$@"

      test "x$fmt" = "x$engine" && continue
      if test -f "$d/$engine"; then
        install_link "$engine" "$d/$fmt"
      else
        verbose_echo "$d/$engine: engine does not exist. Skipping..."
      fi

      # restore positional arguments:
      set x $main_args_while; shift

    done
  done
  upd_symlinkdir
}

main ${1+"$@"}

# set successful return code
cleanup 0