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Twitter cards. Fixes #36

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This commit is contained in:
Carlos Fenollosa 2014-09-15 19:23:12 +02:00
parent 450ecddfea
commit adfcd98012
2 changed files with 22 additions and 2 deletions
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1
README.md
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@ -125,6 +125,7 @@ As a guideline, pull requests should:
Changelog
---------
- 2.4 Added Twitter summaries metadata for posts (#36)
- 2.3.3 Removed big comment header.
Added option to display tags for cut articles on index pages (#61)
Cleaned up "all posts" page (#57)

23
bb.sh
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@ -17,7 +17,7 @@ global_config=".config"
# by the 'global_config' file contents
global_variables() {
global_software_name="BashBlog"
global_software_version="2.3.3"
global_software_version="2.4"
# Blog title
global_title="My fancy blog"
@ -73,7 +73,7 @@ global_variables() {
# "cut" blog entry when putting it to index page. Leave blank for full articles in front page
# i.e. include only up to first '<hr>', or '----' in markdown
cut_do="cut"
# When cutting, cut also tags? If blank, tags will appear in index page for cut articles
# When cutting, cut also tags? If "no", tags will appear in index page for cut articles
cut_tags="yes"
# Regexp matching the HTML line where to do the cut
# note that slash is regexp separator so you need to prepend it with backslash
@ -326,6 +326,24 @@ edit() {
fi
}
# Create a Twitter summary (twitter "card") for the post
#
# $1 the post file
# $2 the title
twitter_card() {
[[ -z "$global_twitter_username" ]] && return
echo "<meta name='twitter:card' content='summary' />"
echo "<meta name='twitter:site' content='@$global_twitter_username' />"
echo "<meta name='twitter:title' content='$2' />" # Twitter truncates at 70 char
description=$(grep -v "^<p>$template_tags_line_header" $1 | sed -e 's/<[^>]*>//g' | head -c 250 | tr '\n' ' ')
echo "<meta name='twitter:description' content='$description' />"
image=$(sed -n 's/.*<img.*src="\([^"]*\)".*/\1/p' $1 | head -n 1) # First image is fine
[[ -z "$image" ]] && return
[[ $image =~ ^https?:\/\/ ]] || image="$global_url/$image" # Check that URL is absolute
echo "<meta name='twitter:image' content='$image' />"
}
# Adds the code needed by the twitter button
#
# $1 the post URL
@ -406,6 +424,7 @@ create_html_page() {
cat ".header.html" > "$filename"
echo "<title>$title</title>" >> "$filename"
google_analytics >> "$filename"
twitter_card "$content" "$title" >> "$filename"
echo "</head><body>" >> "$filename"
# stuff to add before the actual body content
[[ -n "$body_begin_file" ]] && cat "$body_begin_file" >> "$filename"