added text pdf word-by-word differ based on dwdiff

lynxlynxlynx · lynxlynxlynx · commit f66e5e0c191b · 2016-02-11T00:44:59.000+01:00
diff --git a/pdf-word-diff.sh b/pdf-word-diff.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# simple textual diff-er that outputs html to stdout
+# NB: if the text can't be extracted, it won't show up, eg. text in pics or garbled pdfs
+pdf1=$1
+pdf1n=$(basename $1)
+pdf2=$2
+pdf2n=$(basename $2)
+params=$3
+encoding=${4:-UTF-8}
+[[ -z $2 ]] && exit 111
+
+cat <<HTMLHEAD
+<html>
+<head>
+  <meta charset="UTF-8"/>
+  <title>Spremembe med $pdf1n in $pdf2n</title>
+</head>
+<style>
+  .added  { color: green; background: #e3f3c5; }
+  .removed { color: red; background: #fedfdf; text-decoration: line-through; }
+</style>
+<body>
+  <h1>Besedilne spremembe med:
+    <ul>
+      <li> <span class="removed">$pdf1n</span></li>
+      <li> <span class="added">$pdf2n</span></li>
+    </ul>
+  </h1>
+  <pre>
+HTMLHEAD
+
+dwdiff -i -A best -P $params \
+  --start-delete='<span class="removed">' --stop-delete='</span>' \
+  --start-insert='<span class="added" >' --stop-insert='</span>' \
+  <(pdftotext -enc $encoding -layout "$pdf1" -) \
+  <(pdftotext -enc $encoding -layout "$pdf2" -)
+
+cat <<-HTMLTAIL
+</pre></body></html>
+HTMLTAIL
