Import the remaining utilities.

[utils/utils.git] / retex

diff --git a/retex b/retex
new file mode 100755 (executable)
index 0000000..d603e2e
--- /dev/null
+++ b/retex
@@ -0,0 +1,65 @@
+#!/bin/bash
+# Well-behaved repeating TeX builder -- Matt McCutchen
+# usage: retex <cmd> <input-file-minus-.tex>
+
+set -e
+
+cmd="$1"
+in="$2"
+shift 2
+
+function run {
+       echo "[$iter] Running $2..."
+       yes X | "$cmd" -file-line-error-style "$in"
+}
+
+function compare {
+       echo "Comparing files..."
+       for f in "$in"*; do
+               # ignore pdfs because they have a nonreproducible "ID" at the end
+               # and logs because they aren't read
+               if ! [ "$f" != "${f%.keep*}" ] && ! [ "$f" != "${f%.pdf}" ] \
+                       && ! [ "$f" != "${f%.log}" ]; then
+                       suf="${f#$in}"
+                       cmp "$in$suf" "$in.keep$suf" || return $?
+               fi
+       done
+       echo "Reached a fixed point."
+}
+
+function keep {
+       echo "Keeping files..."
+       for f in "$in"*; do
+               if ! [ "$f" != "${f%.keep*}" ]; then
+                       suf="${f#$in}"
+                       \cp -p "$in$suf" "$in.keep$suf"
+               fi
+       done
+}
+
+function clean {
+       echo "Cleaning up kept files..."
+       rm -f "$in.keep"*
+}
+
+function fail {
+       echo "Compiler exited with code $1."
+       # Remove output files here, a la .DELETE_ON_ERROR?
+       exit $1
+}
+
+iter=0
+keep
+run || fail $?
+limit=10
+while ! compare; do
+       iter=$(($iter + 1))
+       if [ $iter -ge $limit ]; then
+               echo "Did not reach a fixed point in $limit tries."
+               exit 2
+       fi
+       keep
+       run || fail $?
+done
+clean
+echo "Successful."