upload.sh

   1 #!/bin/sh
   2
   3 # This is a simple script that will produce my blog on repo.or.cz
   4
   5 # The idea is to have source-<timestamp>.txt files as input, having the
   6 # stories, and this script turning them into nice HTML, committing
   7 # everything, and then pushing it to my repository.
   8
   9 # The blog will then be served using gitweb.
  10
  11 # To make it easier on me, if a file "source.txt" exists, it is
  12 # automatically renamed using the current timestamp.
  13
  14 # TODO: handle images (git add them and rewrite the URL dynamically)
  15 # TODO: generate an RSS feed, too
  16
  17 BRANCH=blog
  18 URL="dscho.git?a=blob_plain;hb=$BRANCH;f="
  19 CSS=blog.css
  20 NEW=new
  21 OUTPUT=index.html
  22 TEST=test.html
  23 TITLE="Dscho's blog"
  24
  25 LC_ALL=C
  26 export LC_ALL
  27
  28 die () {
  29         echo "$*" >&2
  30         exit 1
  31 }
  32
  33 nth () {
  34         # add illogical suffix
  35         case "$1" in
  36         *1?|*[04-9]) echo "$1th";;
  37         *1) echo "$1st";;
  38         *2) echo "$1nd";;
  39         *3) echo "$1rd";;
  40         esac
  41 }
  42
  43 make_chinese_hour () {
  44         case $1 in
  45         23|00) echo Rat;;
  46         01|02) echo Buffalo;;
  47         03|04) echo Tiger;;
  48         05|06) echo Rabbit;;
  49         07|08) echo Dragon;;
  50         09|10) echo Snake;;
  51         11|12) echo Horse;;
  52         13|14) echo Goat;;
  53         15|16) echo Monkey;;
  54         17|18) echo Rooster;;
  55         19|20) echo Dog;;
  56         21|22) echo Pig;;
  57         esac
  58 }
  59
  60 digit_to_roman () {
  61         case $1 in
  62         1) echo $2;;
  63         2) echo $2$2;;
  64         3) echo $2$2$2;;
  65         4) echo $2$3;;
  66         5) echo $3;;
  67         6) echo $3$2;;
  68         7) echo $3$2$2;;
  69         8) echo $3$2$2$2;;
  70         9) echo $2$4;;
  71         esac
  72 }
  73
  74 make_roman_number () {
  75         case $1 in
  76         '') ;;
  77         ?) digit_to_roman $1 I V X;;
  78         ??) echo $(digit_to_roman ${1%?} X L C)$(make_roman_number ${1#?});;
  79         ???) echo $(digit_to_roman ${1%??} C D M)$(make_roman_number ${1#?});;
  80         ????) echo $(digit_to_roman ${1%???} M)$(make_roman_number ${1#?});;
  81         esac
  82 }
  83
  84 make_date () {
  85         printf "%s, %s of %s, Anno Domini %s, at the hour of the %s\n" \
  86                 $(date +%A -d @$1) \
  87                 $(nth $(date +%e -d @$1)) \
  88                 $(date +%B -d @$1) \
  89                 $(make_roman_number $(date +%Y -d @$1)) \
  90                 $(make_chinese_hour $(date +%H -d @$1))
  91 }
  92
  93 # make an argument for sed, to replace $1..$1 by <$2>..</$2>
  94 markup_substitution () {
  95         case "$1" in
  96         ?) echo "s/$1\\([^$1]*\\)$1/<$2>\\\\1<\/$2>/g";;
  97         ??)
  98                 tmp="[^${1%?}]*"
  99                 tmp2="\\|${1%?}[^${1#?}]$tmp"
 100                 tmp3="\\($tmp\\($tmp2\\($tmp2\\($tmp2\\)\\)\\)\\)"
 101                 echo "s/$1$tmp3$1/<$2>\\\\1<\/$2>/g"
 102         ;;
 103         esac
 104 }
 105
 106 # transform markup in stdin to HTML
 107 markup () {
 108         sed -e 's!^$!</p><p>!' \
 109                 -e 's!IMHO!in my humble opinion!g' \
 110                 -e 's!repo.or.cz!<a href=http://&>&</a>!g' \
 111                 -e 's!:-)!\&#x263a;!g' \
 112                 -e "$(markup_substitution "''" i)" \
 113                 -e "$(markup_substitution "_" u)"
 114 }
 115
 116 # make HTML page
 117 make_html () {
 118         cat << EOF
 119 <html>
 120         <head>
 121                 <title>$TITLE</title>
 122                 <meta http-equiv="Content-Type"
 123                         content="text/html; charset=UTF-8"/>
 124                 <link rel="stylesheet" type="text/css" href="$URL$CSS">
 125         </head>
 126         <body>
 127                 <div class=content>
 128                         <h1>$TITLE</h1>
 129 EOF
 130
 131         # timestamps will not need padding to sort correctly, for some time...
 132         for file in $(ls -r source-*.txt)
 133         do
 134                 basename=${file%.txt}
 135                 timestamp=${basename#source-}
 136                 echo "<h6>$(make_date $timestamp)</h6>"
 137                 echo "<h2>$(sed 1q < $file | markup)</h2>"
 138                 echo ""
 139                 echo "<p>"
 140                 sed 1d < $file | markup
 141                 echo "</p>"
 142         done |
 143         sed -e 's/^./\t\t\t&/'
 144
 145         cat << EOF
 146                 </div>
 147         </body>
 148 </html>
 149 EOF
 150
 151 }
 152
 153 # make sure we're in the correct working directory
 154 cd "$(dirname "$0")"
 155
 156 # parse command line option
 157 case "$1" in
 158 *dry*) DRYRUN=1; shift;;
 159 *show*) firefox "$(pwd)"/$TEST; exit;;
 160 *remote*) firefox http://repo.or.cz/w/git/$URL$OUTPUT; exit;;
 161 esac
 162
 163 test "$#" = 0 ||
 164 die "Usage: $0 [--dry-run]"
 165
 166 # make sure we're on the correct branch
 167 test refs/heads/$BRANCH = $(git symbolic-ref HEAD) ||
 168 die "Not on branch $BRANCH"
 169
 170 # make sure there are no uncommitted changes
 171 git update-index --refresh &&
 172 git diff-files --quiet &&
 173 git diff-index --quiet --cached HEAD ||
 174 die "Have uncommitted changes!"
 175
 176 # rename the new blog entry if it exists
 177 now=$(date +%s)
 178 test ! -f $NEW || {
 179         mv -i $NEW source-$now.txt &&
 180         git add source-$now.txt
 181 } ||
 182 die "Could not rename source.txt"
 183
 184 if test -z "$DRYRUN"
 185 then
 186         # rewrite URLs
 187         sed -e "s/url(/&$URL/g" < $CSS.in > $CSS &&
 188         git add $CSS ||
 189         die "Rewriting $CSS failed"
 190 else
 191         OUTPUT=$TEST
 192         CSS=$CSS.in
 193         URL=
 194 fi
 195
 196 make_html > $OUTPUT || die "Could not write $OUTPUT"
 197
 198 test ! -z "$DRYRUN" && exit
 199
 200 git add $OUTPUT &&
 201 git commit -s -m "Update $(make_date $now)" &&
 202 git push origin +$BRANCH