New script to count slides

count-slides.py will count the number of slides per section,
and compute size of each chapter as well. It is not perfect
(for instance, it assumes that excluded_classes=in_person)
but it should help to assess the size of the content before
delivering long workshops.

slides/count-slides.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+import re
+import sys
+
+PREFIX = "name: toc-"
+EXCLUDED = ["in-person"]
+
+class State(object):
+    def __init__(self):
+        self.current_slide = 1
+        self.section_title = None
+        self.section_start = 0
+        self.section_slides = 0
+        self.chapters = {}
+        self.sections = {}
+    def show(self):
+        if self.section_title.startswith("chapter-"):
+            return
+        print("{0.section_title}\t{0.section_start}\t{0.section_slides}".format(self))
+        self.sections[self.section_title] = self.section_slides
+
+state = State()
+
+title = None
+for line in open(sys.argv[1]):
+    line = line.rstrip()
+    if line.startswith(PREFIX):
+        if state.section_title is None:
+            print("{}\t{}\t{}".format("title", "index", "size"))
+        else:
+            state.show()
+        state.section_title = line[len(PREFIX):].strip()
+        state.section_start = state.current_slide
+        state.section_slides = 0
+    if line == "---":
+        state.current_slide += 1
+        state.section_slides += 1
+    if line == "--":
+        state.current_slide += 1
+    toc_links = re.findall("\(#toc-(.*)\)", line)
+    if toc_links and state.section_title.startswith("chapter-"):
+        if state.section_title not in state.chapters:
+            state.chapters[state.section_title] = []
+        state.chapters[state.section_title].append(toc_links[0])
+    # This is really hackish
+    if line.startswith("class:"):
+        for klass in EXCLUDED:
+            if klass in line:
+                state.section_slides -= 1
+                state.current_slide -= 1
+
+state.show()
+
+for chapter in sorted(state.chapters):
+    chapter_size = sum(state.sections[s] for s in state.chapters[chapter])
+    print("{}\t{}\t{}".format("total size for", chapter, chapter_size))
+

slides/generate-chapter-sizes.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-INPUT=$1
-
-{
-  echo "# Front matter"
-  cat "$INPUT"
-} | 
-  grep -e "^# " -e ^---$ | uniq -c | 
-  sed "s/^ *//" | sed s/---// | 
-  paste -d "\t" - -