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# NanoBlogger RSS 2.0 Feed Plugin
# Limit number of items to include in feed
: ${LIMIT_ITEMS:=10}
# output filename of rss feed
NB_RSS2File="rss.$NB_SYND_FILETYPE"
# rss version
NB_RSS2Ver="2.0"
# rss feed's alternate link
NB_RSS2AltLink='<link rel="alternate" type="application/rss+xml" title="RSS $NB_RSS2Ver" href="${BASE_URL}$NB_RSS2File" />'
NB_RSS2CatAltLink='<link rel="alternate" type="application/rss+xml" title="RSS $NB_RSS2Ver: $NB_ArchiveTitle" href="$NB_ArchivePrefix-$NB_RSS2File" />'
NB_RSS2ModDate=`date "+%Y-%m-%dT%H:%M:%S$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 rss feed
make_rssfeed(){
feed_outfile="$1"
MKPAGE_OUTFILE="$feed_outfile"
RSS2_FEED_URL="$BLOG_URL/$NB_RSS2File"
[ ! -z "$NB_RSS2CatFile" ] && RSS2_FEED_URL="$BLOG_URL/$ARCHIVES_DIR/$NB_RSS2CatFile"
cat > "$MKPAGE_OUTFILE" <<-EOF
<?xml version="1.0" encoding="$BLOG_CHARSET"?>
<rss version="2.0"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:admin="http://webns.net/mvcb/"
>
<channel>
<title>$BLOG_TITLE</title>
<link>$RSS2_FEED_URL</link>
<description>$BLOG_DESCRIPTION</description>
<dc:language>$BLOG_LANG</dc:language>
<dc:creator>$NB_EntryAuthor</dc:creator>
<dc:date>$NB_RSS2ModDate</dc:date>
<admin:generatorAgent rdf:resource="http://nanoblogger.sourceforge.net" />
$NB_RSS2Entries
</channel>
</rss>
EOF
nb_msg "$MKPAGE_OUTFILE"
}
# generate feed entries
build_rssfeed(){
db_catquery="$1"
query_db max "$db_catquery" "$LIMIT_ITEMS"
ARCHIVE_LIST="$DB_RESULTS"
> "$SCRATCH_FILE"
for entry in $ARCHIVE_LIST; do
NB_RSS2EntryTime=`echo "$entry" |sed -e '/\_/ s//\:/g; s/[\.]'$NB_DATATYPE'//g'`
read_entry "$NB_DATA_DIR/$entry"
# non-portable find command!
#NB_RSS2EntryModDate=`find "$NB_DATA_DIR/$entry" -printf "%TY-%Tm-%TdT%TH:%TM:%TS$BLOG_TZD"`
NB_RSS2EntryTitle=`echo "$NB_EntryTitle" |esc_chars`
NB_RSS2EntrySubject=; 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/\,[ ]$//g; }' |esc_chars`
NB_RSS2EntrySubject=`echo '<dc:subject>'$cat_title'</dc:subject>'`
fi
#NB_RSS2EntryExcerpt=`echo "$NB_EntryBody" |sed -n '1,/^$/p' |esc_chars`
NB_RSS2EntryExcerpt="$NB_EntryBody"
cat >> "$SCRATCH_FILE" <<-EOF
<item>
<link>${ARCHIVES_URL}$NB_EntryPermalink</link>
<title>$NB_RSS2EntryTitle</title>
<dc:date>$NB_RSS2EntryTime$BLOG_TZD</dc:date>
<dc:creator>$NB_EntryAuthor</dc:creator>
$NB_RSS2EntrySubject
<description><![CDATA[$NB_RSS2EntryExcerpt]]></description>
</item>
EOF
done
NB_RSS2Entries=$(< "$SCRATCH_FILE")
}
# generate category feed entries
build_rss_catfeeds(){
if [ "$CATEGORY_FEEDS" = 1 ]; then
db_categories="$CAT_LIST"
if [ ! -z "$db_categories" ]; then
for cat_db in $db_categories; do
if [ -f "$NB_DATA_DIR/$cat_db" ]; then
#NB_RSS2CatFile=`chg_suffix "$cat_db" "$NB_SYND_FILETYPE"`
NB_RSS2CatFile=`echo "$cat_db" |sed -e 's/[\.]db/-rss.'$NB_SYND_FILETYPE'/g'`
NB_ArchiveTitle=`sed 1q "$NB_DATA_DIR/$cat_db" |esc_chars`
nb_msg "generating rss $NB_RSS2Ver feed for category ..."
build_rssfeed "$cat_db"
make_rssfeed "$BLOG_DIR/$ARCHIVES_DIR/$NB_RSS2CatFile"
fi
done
fi
fi
}
nb_msg "generating rss $NB_RSS2Ver feed ..."
build_rssfeed nocat
make_rssfeed "$BLOG_DIR/$NB_RSS2File"
build_rss_catfeeds
BASE_URL="$OLD_BASE_URL"
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