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Added support for configuring a Twitter Card default image

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This commit is contained in:
Carlos Fenollosa 2021-11-04 19:39:11 +01:00
parent c126913cdd
commit adf76adaf1
1 changed files with 12 additions and 1 deletions
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13
bb.sh
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@ -49,6 +49,8 @@ global_variables() {
# Change this to your username if you want to use twitter for comments
global_twitter_username=""
# Default image for the Twitter cards. Use an absolute URL
global_twitter_card_image=""
# Set this to false for a Twitter button with share count. The cookieless version
# is just a link.
global_twitter_cookieless="true"
@ -345,8 +347,17 @@ twitter_card() {
echo "<meta name='twitter:title' content='$2' />" # Twitter truncates at 70 char
description=$(grep -v "^<p>$template_tags_line_header" "$1" | sed -e 's/<[^>]*>//g' | tr '\n' ' ' | sed "s/\"/'/g" | head -c 250)
echo "<meta name='twitter:description' content=\"$description\" />"
image=$(sed -n '2,$ d; s/.*<img.*src="\([^"]*\)".*/\1/p' "$1") # First image is fine
# For the image we try to locate the first image in the article
image=$(sed -n '2,$ d; s/.*<img.*src="\([^"]*\)".*/\1/p' "$1")
# If none, then we try a global setting image
[[ -z $image ]] && [[ -n $global_twitter_card_image ]] && image=$global_twitter_card_image
# If none, return
[[ -z $image ]] && return
# Final housekeeping
[[ $image =~ ^https?:// ]] || image=$global_url/$image # Check that URL is absolute
echo "<meta name='twitter:image' content='$image' />"
}