examples/gen_example_text.sh

   1 #!/bin/bash
   2 ##
   3 ##  Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
   4 ##
   5 ##  Use of this source code is governed by a BSD-style license
   6 ##  that can be found in the LICENSE file in the root of the source
   7 ##  tree. An additional intellectual property rights grant can be found
   8 ##  in the file PATENTS.  All contributing project authors may
   9 ##  be found in the AUTHORS file in the root of the source tree.
  10 ##
  11
  12
  13 # gen_example_text.sh
  14
  15 self=$0
  16
  17 die_usage() {
  18     echo "Usage: $self <example.txt>"
  19     exit 1
  20 }
  21
  22 die() {
  23     echo "$@"
  24     exit 1
  25 }
  26
  27 include_block() {
  28     local on_block
  29     while IFS=$'\n' read -r t_line; do
  30         case "$t_line" in
  31             \~*\ ${block_name})
  32                 if [ "x$on_block" == "xyes" ]; then
  33                     return 0;
  34                 else
  35                     on_block=yes
  36                 fi
  37                 ;;
  38             *)
  39                 if [ "x$on_block" == "xyes" ]; then
  40                     echo "$t_line"
  41                 fi
  42                 ;;
  43         esac
  44     done
  45     echo "WARNING: failed to find text for block $block_name" >&2
  46     return 1
  47 }
  48
  49 txt=$1
  50 [ -f "$txt" ] || die_usage
  51 read -r template < "$txt"
  52 case "$template" in
  53     @TEMPLATE*) template=${txt%/*}/${template##@TEMPLATE } ;;
  54     *) die "Failed to parse template name from '$template'" ;;
  55 esac
  56
  57 fence="~~~~~~~~~"
  58 fence="${fence}${fence}"
  59 fence="${fence}${fence}"
  60 fence="${fence}${fence}"
  61 while IFS=$'\n' read -r line; do
  62     case "$line" in
  63         @TEMPLATE*)
  64             template=${template##@TEMPLATE }
  65             template=${template%.c}.txt
  66             ;;
  67         @DEFAULT)
  68             include_block < "$template"
  69             ;;
  70         ~~~*)
  71             block_name=${line##~* }
  72             [ "$block_name" == "INTRODUCTION" ] || echo "$fence"
  73             ;;
  74         *)  echo "$line"
  75             ;;
  76     esac
  77 done < "$txt"
  78
  79 echo
  80 echo "Putting It All Together"
  81 echo "======================="
  82 echo "${fence}"
  83 ${self%/*}/gen_example_code.sh "${txt}"
  84 echo "${fence}"