pdftotext only called if present in system, minor edit

David and Raul had both reported that because 'pdftotext' wasn't available
on their system, the project failed (even though the PDF was built!). So
with this commit, we first check if the system has 'pdftotext' and call it
only if its is available.

Some minor edits were made, building upon Boud's previous commit.

1 files changed, 6 insertions, 4 deletions

diff --git a/project b/project
index 47cb5ae..1d7847a 100755
--- a/project
+++ b/project
@@ -407,10 +407,12 @@ EOF
         # Run the actual project.
         controlled_env reproduce/analysis/make/top-make.mk
 
-	# Print the number of words
-	numwords=$(/usr/bin/pdftotext paper.pdf && cat paper.txt | wc -w)
-	echo; echo "Number of words in full PDF: $numwords"
-        rm paper.txt
+        # Print the number of words (if the user has pdftotext.
+        if which pdftotext &> /dev/null; then
+          numwords=$(pdftotext paper.pdf && cat paper.txt | wc -w)
+          echo; echo "Number of words in full PDF: $numwords"
+          rm paper.txt
+        fi
         ;;