Check the number of declared figures in each chapter

If the number of declared figures is greater that the number of available
figures, processing errors occur while converting to html or pdf. The error
messages are not obvious, so it is safer to catch the mistake before.

Author: jnavila

Rakefile

@@ -176,6 +176,16 @@ namespace :ci do
       langs -= excluded_langs
     end
     error_code = false
+    chapter_figure = {
+      "01-introduction"       => 7,
+      "02-git-basics"         => 2,
+      "03-git-branching"      => 39,
+      "04-git-server"         => 15,
+      "05-distributed-git"    => 27,
+      "06-git-tools"          => 1,
+      "07-customizing-git"    => 3,
+      "08-git-and-other-scms" => 0,
+      "09-git-internals"      => 4}
     langs.each do |lang|
       print "processing #{lang} "
       mark = ''
@@ -185,6 +195,7 @@ namespace :ci do
           mark+= mk.read.encode("UTF-8")
         end
         src_file = File.open(mk_filename, 'r')
+        figure_count = 0
         until src_file.eof?
           line = src_file.readline
           matches = line.match /^#/
@@ -194,6 +205,17 @@ namespace :ci do
  	      error_code = true
             end
           end
+          if line.match /^\s*Insert\s(.*)/
+            figure_count = figure_count + 1
+          end
+        end
+	# This extraction is a bit contorted, because the pl translation renamed
+	# the files, so the match is done on the directories.
+        tab_fig_count = chapter_figure[File.basename(File.dirname(mk_filename))]
+        expected_figure_count = tab_fig_count ? tab_fig_count:0
+        if figure_count > expected_figure_count
+          print "\nToo many figures declared in #{mk_filename}\n"
+          error_code = true
         end
       end
       begin