From 2c18aab091195a5ad78f4cc15b74cfdd0391fa72 Mon Sep 17 00:00:00 2001
From: malc <moosotc@gmail.com>
Date: Tue, 28 Jul 2015 05:30:52 +0300
Subject: [PATCH] Safety nets

---
 misc/llppac | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/misc/llppac b/misc/llppac
index 1237db1..8394eaf 100755
--- a/misc/llppac
+++ b/misc/llppac
@@ -16,6 +16,11 @@ executable_p() {
     command -v "$1" >/dev/null 2>&1
 }
 
+missing() {
+    executable_p $1 || \
+        eval "$1() { die \"$1 is needed for \$type conversion\" ; }"
+}
+
 maketext() {
     test -d "$cachedir/fonts" || mkdir "$cachedir/fonts"
     cat >"$cachedir/fonts/text" <<EOF
@@ -114,6 +119,7 @@ case $type in
     html) {
         test -n "$dc" && die "cannot convert compressed '$mime'"
         unset filt
+        missing prince "PrinceXML(http://www.princexml.com/)"
         conv='prince "$1" -o "$casp"'
     };;
     word) {
@@ -121,15 +127,19 @@ case $type in
             unset filt
             conv='unoconv -o "$casp" "$1"'
         else
+            missing antiword "antiword or unoconv"
             conv='antiword -m 8859-1.txt -a a4 - >"$casp"'
         fi
     };;
     uno) {
         test -n "$dc" && die "cannot convert compressed '$mime'"
         unset filt
+        missing pandoc "unoconv(http://dag.wiee.rs/home-made/unoconv/)"
         conv='unoconv -o "$casp" "$1"'
     };;
     svg) {
+        missing rsvg-convert "rsvg-convert"
+        missing inkscape "inkscape(https://inkscape.org/en/)"
         executable_p rsvg-convert                        \
             && conv='rsvg-convert -f pdf -o "$casp"'     \
             || conv='inkscape -z -A "$casp" -'
@@ -155,6 +165,7 @@ EOF
         unset filt
         conv='FONTCONFIG_PATH=$cachedir/fonts/ pango-view -q $arg -o $casp'
         caspsuf=.pdf
+        missing pango-view "pango-view(http://www.pango.org/)"
     };;
     fcfont) {
         if test -e "$2"; then
@@ -168,16 +179,22 @@ EOF
         md5of=/dev/null
         filt=
         force=1
+        missing pango-view "pango-view(http://www.pango.org/)"
+    };;
+    image) {
+        conv='convert - pdf:"$casp"'
+        missing convert "convert(http://www.imagemagick.org/script/convert.php)"
     };;
-    image) conv='convert - pdf:"$casp"';;
     dvi) {
         test -n "$dc" && die "cannot convert compressed '$mime'"
         unset filt
         conv='dvipdf "$1" "$casp"'
+        missing "dvipdf"
     };;
     text) {
         conv='pandoc -t epub - -o "$casp"'
         caspsuf=.epub
+        missing "pandoc(http://pandoc.org/)"
     };;
     *) die "unhandled filter type: '$type'";;
 esac
-- 
2.11.4.GIT