retex

   1 #!/bin/bash
   2 # Well-behaved repeating TeX builder -- Matt McCutchen
   3 # usage: retex <cmd> <input-file-minus-.tex>
   4
   5 set -e
   6
   7 cmd="$1"
   8 in="$2"
   9 shift 2
  10
  11 function run {
  12         echo "[$iter] Running $2..."
  13         yes X | "$cmd" -file-line-error-style "$in"
  14 }
  15
  16 function compare {
  17         echo "Comparing files..."
  18         for f in "$in"*; do
  19                 # ignore pdfs because they have a nonreproducible "ID" at the end
  20                 # and logs because they aren't read
  21                 if ! [ "$f" != "${f%.keep*}" ] && ! [ "$f" != "${f%.pdf}" ] \
  22                         && ! [ "$f" != "${f%.log}" ]; then
  23                         suf="${f#$in}"
  24                         cmp "$in$suf" "$in.keep$suf" || return $?
  25                 fi
  26         done
  27         echo "Reached a fixed point."
  28 }
  29
  30 function keep {
  31         echo "Keeping files..."
  32         for f in "$in"*; do
  33                 if ! [ "$f" != "${f%.keep*}" ]; then
  34                         suf="${f#$in}"
  35                         \cp -p "$in$suf" "$in.keep$suf"
  36                 fi
  37         done
  38 }
  39
  40 function clean {
  41         echo "Cleaning up kept files..."
  42         rm -f "$in.keep"*
  43 }
  44
  45 function fail {
  46         echo "Compiler exited with code $1."
  47         # Remove output files here, a la .DELETE_ON_ERROR?
  48         exit $1
  49 }
  50
  51 iter=0
  52 keep
  53 run || fail $?
  54 limit=10
  55 while ! compare; do
  56         iter=$(($iter + 1))
  57         if [ $iter -ge $limit ]; then
  58                 echo "Did not reach a fixed point in $limit tries."
  59                 exit 2
  60         fi
  61         keep
  62         run || fail $?
  63 done
  64 clean
  65 echo "Successful."