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# NanoBlogger Atom Feed Plugin
# limit number of items to include in feed
: ${LIMIT_ITEMS:=10}
# filename of atom feed
NB_AtomFile="atom.$NB_SYND_FILETYPE"
# atom feed version
NB_AtomVer="0.3"
# atom feed's alternate link
NB_AtomAltLink='<link rel="alternate" type="application/atom+xml" title="Atom $NB_AtomVer" href="${BASE_URL}$NB_AtomFile" />'
NB_AtomModDate=`date "+%Y-%m-%dT%H:%M:%S$BLOG_TZD"`
# make links temporarily absolute
ARCHIVES_URL="$BLOG_URL/$ARCHIVES_DIR/"
[ "$ABSOLUTE_LINKS" = "1" ] && ARCHIVES_URL=""
OLD_BASE_URL="$BASE_URL"
BASE_URL="$BLOG_URL/"
# escape special characters to help create valid xml feeds
esc_chars(){
sed -e '/[\&][ ]/ s//\& /g; /[\"]/ s//\"/g'
}
# make atom feed
make_atomfeed(){
MKPAGE_OUTFILE="$BLOG_DIR/$NB_AtomFile"
cat > "$MKPAGE_OUTFILE" <<-EOF
<?xml version="1.0" encoding="$BLOG_CHARSET"?>
<feed version="$NB_AtomVer"
xmlns="http://purl.org/atom/ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
>
<title mode="escaped">$BLOG_TITLE</title>
<link rel="alternate" type="text/html" href="$BLOG_URL"/>
<modified>$NB_AtomModDate</modified>
<author>
<name>$NB_EntryAuthor</name>
<url>$BLOG_URL</url>
</author>
$NB_AtomEntries
</feed>
EOF
nb_msg "$MKPAGE_OUTFILE"
}
# generate feed entries
build_atomfeed(){
db_catquery="$1"
query_db max "$db_catquery" "$LIMIT_ITEMS"
ARCHIVE_LIST="$DB_RESULTS"
> "$SCRATCH_FILE"
for entry in $ARCHIVE_LIST; do
read_entry "$NB_DATA_DIR/$entry"
Atom_EntryTime=`echo "$entry" |sed -e '/\_/ s//\:/g; s/[\.]'$NB_DATATYPE'//g'`
Atom_EntryDate=`echo "$Atom_EntryTime$BLOG_TZD"`
# non-portable find command!
#Atom_EntryModDate=`find "$NB_DATA_DIR/$entry" -printf "%TY-%Tm-%TdT%TH:%TM:%TS$BLOG_TZD"`
Atom_EntryModDate="$Atom_EntryDate"
Atom_EntryTitle=`echo "$NB_EntryTitle" |esc_chars`
Atom_EntrySubject=; cat_title=; oldcat_title=
for cat_db in $db_categories; do
cat_var=`grep "$entry" "$NB_DATA_DIR/$cat_db"`
if [ ! -z "$cat_var" ]; then
cat_title=`sed 1q "$NB_DATA_DIR/$cat_db"`
[ "$cat_title" != "$oldcat_title" ] && cat_title="$oldcat_title $cat_title"
oldcat_title="$cat_title,"
fi
done
if [ ! -z "$cat_title" ]; then
cat_title=`echo $cat_title |sed -e '{$ s/\,[ ]$//g; }' |esc_chars`
Atom_EntrySubject=`echo '<dc:subject>'$cat_title'</dc:subject>'`
fi
#Atom_EntryExcerpt=`echo "$NB_EntryBody" |sed -n '1,/^$/p' |esc_chars`
Atom_EntryExcerpt="$NB_EntryBody"
cat >> "$SCRATCH_FILE" <<-EOF
<entry>
<title mode="escaped">$Atom_EntryTitle</title>
<author>
<name>$NB_EntryAuthor</name>
</author>
<link rel="alternate" type="text/html" href="${ARCHIVES_URL}$NB_EntryPermalink"/>
<id>${ARCHIVES_URL}$NB_EntryPermalink</id>
<issued>$Atom_EntryDate</issued>
<modified>$Atom_EntryModDate</modified>
<created>$Atom_EntryDate</created>
$Atom_EntrySubject
<content type="application/xhtml+xml" xml:lang="en" xml:space="preserve" mode="escaped">
<![CDATA[
$Atom_EntryExcerpt
]]>
</content>
</entry>
EOF
done
NB_AtomEntries=$(< "$SCRATCH_FILE")
}
nb_msg "generating atom $NB_AtomVer feed ..."
build_atomfeed nocat
make_atomfeed
BASE_URL="$OLD_BASE_URL"
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