Support for passing a list of links

src/muse-dl.cr

@@ -9,9 +9,10 @@ module Muse::Dl
   VERSION = "0.1.0"
 
   class Main
-    def self.run(args : Array(String))
-      parser = Parser.new(args)
-      thing = Fetch.get_info(parser.url)
+    def self.dl(parser : Parser)
+      url = parser.url
+      thing = Fetch.get_info(url) if url
+      return unless thing
 
       if thing.is_a? Muse::Dl::Book
         # Will have no effect if parser has a custom title
@@ -44,6 +45,20 @@ module Muse::Dl
         puts "Saved final output to #{parser.output}"
       end
     end
+
+    def self.run(args : Array(String))
+      parser = Parser.new(args)
+
+      input_list = parser.input_list
+      if input_list
+        File.each_line input_list do |url|
+          parser.url = url.strip
+          Main.dl parser
+        end
+      elsif parser.url
+        Main.dl parser
+      end
+    end
   end
 end
 

src/parser.cr

@@ -7,13 +7,15 @@ module Muse::Dl
     @tmp : String
     @cleanup = true
     @output = DEFAULT_FILE_NAME
-    @url = "INVALID_URL"
+    @url : String | Nil
     @input_pdf : String | Nil
     @clobber = false
+    @input_list : String | Nil
 
     DEFAULT_FILE_NAME = "tempfilename.pdf"
 
-    getter :bookmarks, :tmp, :cleanup, :output, :url, :input_pdf, :clobber
+    getter :bookmarks, :tmp, :cleanup, :output, :url, :input_pdf, :clobber, :input_list
+    setter :url
 
     # Update the output filename unless we have a custom one passed
     def output=(output_file : String)
@@ -34,13 +36,19 @@ module Muse::Dl
       @input_pdf = nil
 
       parser = OptionParser.new
-      parser.banner = "Usage: muse-dl [--flags] URL"
+      parser.banner = <<-EOT
+      Usage: muse-dl [--flags] [URL|INPUT_FILE]
+
+      URL: A link to a book on the Project MUSE website, eg https://muse.jhu.edu/book/875
+      INPUT_FILE: Path to a file containing a list of links
+
+      EOT
       parser.on(long_flag = "--no-cleanup", description = "Don't cleanup temporary files") { @cleanup = false }
       parser.on(long_flag = "--tmp-dir PATH", description = "Temporary Directory to use") { |path| @tmp = path }
       parser.on(long_flag = "--output FILE", description = "Output Filename") { |file| @output = file }
       parser.on(long_flag = "--no-bookmarks", description = "Don't add bookmarks in the PDF") { @bookmarks = false }
       parser.on(long_flag = "--input-pdf INPUT", description = "Input Stitched PDF. Will not download anything") { |input| @input_pdf = input }
-      parser.on(long_flag = "--clobber", description = "Overwrite the output file, if it already exists") { @clobber = true }
+      parser.on(long_flag = "--clobber", description = "Overwrite the output file, if it already exists. Not compatible with input-pdf") { @clobber = true }
       parser.on("-h", "--help", "Show this help") { puts parser }
 
       parser.unknown_args do |args|
@@ -48,7 +56,12 @@ module Muse::Dl
           puts parser
           exit 1
         end
-        @url = args[0]
+        if File.exists? args[0]
+          @input_list = args[0]
+          @input_pdf = nil
+        else
+          @url = args[0]
+        end
       end
 
       parser.invalid_option do |flag|