Create functions for everything

quick-start-guides/convert_to_pdf.sh

 #!/bin/bash
 
-# Checks for the presence of markdown files
-echo
-md=$(ls -1 *.md 2>/dev/null | wc -l) # ls -1 list one file per line
-mdown=$(ls -1 *.mdown 2>/dev/null | wc -l)
-mark=$(ls -1 *.markdown 2>/dev/null | wc -l)
-present=$(($md+$mdown+$mark))
-if [ "$present" -eq 0 ]; then
-	echo -e "No markdown files detected!\n"
-	exit
-fi
-pdf_dir="PDFs"
-# Checks for output directory and creates one if missing
-if [ ! -d $pdf_dir ]; then
-	mkdir $pdf_dir
-	echo -e "Output folder created.\n"
-else
-	echo -e "Selecting existing output folder.\n"
-fi
-
-# Asks user for the LaTeX engine to be used
-echo -e "LaTeX engines\n------------\n"
-PS3=$'\n'"Please choose a LaTeX engine: "
-select option in pdflatex lualatex xelatex
-do
-    case $option in
-        pdflatex) 
-            echo -e "\npdflatex engine selected";;
-        lualatex) 
-            echo -e "\nlualatex engine selected";;
-        xelatex)
-        	echo -e "\nxelatex";;
-        *)
-			echo "Please choose an option";;
-	esac
-	break
-done
-echo
+# First replace all whitespaces from filenames with underscores
+replace_whitespaces() {
+	for f in *\ *; do 
+		mv "$f" "${f// /_}"; 
+	done
+}
+# Create array to store all md files for later
+# readarray -d '' array < <(find . -iname "*.md" -o -iname "*.mdown" -o -iname "*.markdown")
+create_filearray () {
+	mapfile -d $'\0' files < <(find . -iname  "*.md" -print0)
+}
 
-# Allows user to add custom LaTeX variables 
-echo -n "Would you like to add any LaTeX details(e.g. --variable mainfont:\"Gill Sans\")?: "
-read variable
+find_markdown () {
+	if [ "${#files[@]}" -eq 0 ] ; then
+		echo -e "No markdown files detected!\n"
+		exit
+	else 
+		echo -e "${#files[@]} markdown files detected!\n"
+	fi
+}
 
-# Compiles documents
-echo -e "\nBeginning conversion...\n"
+# Checks for output directory and creates one if missing
+create_outdir_if_not_exists () {
+	if [ ! -d "$pdf_dir" ]; then
+		mkdir $pdf_dir
+		echo -e "Output folder created.\n"
+	else
+		echo -e "Selecting existing output folder.\n"
+	fi
+}
 
-count=0
+# Asks user for the LaTeX engine to be used
+select_latex_engine() {
+	echo -e "LaTeX engines\n------------\n"
+	PS3=$'\n'"Please choose a LaTeX engine (type 1 for pdflatex): "
+	select option in pdflatex lualatex xelatex
+	do
+		case $option in
+			pdflatex) 
+				echo -e "\npdflatex engine selected";;
+			lualatex) 
+				echo -e "\nlualatex engine selected";;
+			xelatex)
+				echo -e "\nxelatex";;
+			*)
+				echo "Please choose an option";;
+		esac
+		break
+	done
+	echo
+}
 
-find . -iname "*.md" -o -iname "*.mdown" -o -iname "*.markdown" | while read -r i; do # find -iname finds <pattern> case insensitive
-	y="$i"
-	x="${y%.*}"
-	z="${x##*/}"
+extract_filename() {
+	y="$file" 		# ./FILENAME.EXTENSION
+	x="${y%.*}" 	# ./FILENAME
+	z="${x##*/}" 	# FILENAME
+	echo "Extracted filename: ${z}"
+}
 
-	pdf_filename="$z.pdf"
-	pdf_path="./${pdf_dir}/${pdf_filename}"
-	
-	created_date=$(stat -c %y $pdf_path) # Get file last modified date and time
+create_date_string() {
+	created_date=$(stat -c %y ${pdf_path}) # Get file last modified date and time
 	IFS=" " read -r a b c <<< "$created_date" # split the string into 3 parts (date time timezone_offset)
 	file_date="$a" # the first part is the date
 	ftime="${b%.*}" # the second part is the time (but its too exact, so strip everything after the .)
 	file_time=${ftime//:} # remove the colons from the time stamp
+	# echo "Constructed date string: $file_date and time string: $file_time"
+}
+
+construct_pdf_path() {
+	pdf_filename="${z}.pdf"
+	pdf_path="./${pdf_dir}/${pdf_filename}"
+}
 
+construct_bak_pdf_path() {
 	bak_pdf_filename="${z}_${file_date}-${file_time}.pdf" # create new filename
 	bak_pdf_path="./${pdf_dir}/${bak_pdf_filename}"
+}
+# END functions #
+
+pdf_dir="PDFs"
 
-	if [ -f $pdf_path ]; then
-		echo "File $i was already converted."
+replace_whitespaces
+create_filearray
+find_markdown
+create_outdir_if_not_exists
+select_latex_engine
+
+# # Allow user to add custom LaTeX variables 
+# echo -n "Would you like to add any LaTeX details(e.g. --variable mainfont:\"Gill Sans\")?: "
+# read variable
+
+# Compile documents
+echo -e "\nBeginning conversion...\n"
+
+# find . -iname "*.md" -o -iname "*.mdown" -o -iname "*.markdown" | while read -r file; do # find -iname finds <pattern> case insensitive
+for file in "${files[@]}"; do                                                      
+    echo "File:" ${file}                                                                 
+	extract_filename
+	construct_pdf_path
+	construct_bak_pdf_path
+	echo "PDF Path: $pdf_path"
+	if [ -f "$pdf_path" ]; then
+		echo "File $file was already converted."
+		create_date_string
+		echo "Bak file name: $bak_pdf_filename"
 		mv $pdf_path $bak_pdf_path
-		echo "Existing file was renamed to $bak_pdf_filename"
+		echo -e "\nExisting file was moved to ${bak_pdf_path}\n"
 	fi
-	pandoc -f markdown $i --pdf-engine=$option --variable font-family:sans-serif $variable -o $pdf_path
-
-	# ((count++))
-	# echo "$count file compiled."
+	echo -e "Continuing with new file creation\n"
+	pandoc -s --toc --template=my.latex -f markdown "$file" --pdf-engine=$option  -o "$pdf_path"  # could add --variable font-family:sans-serif $variable
+	echo -e "File created\n"
 done
 
-echo -e "\nAll files complete!"
+echo -e "\nAll files complete!"
\ No newline at end of file