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// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package processor // import "miniflux.app/reader/processor"
import (
"miniflux.app/logger"
"miniflux.app/model"
"miniflux.app/reader/rewrite"
"miniflux.app/reader/sanitizer"
"miniflux.app/reader/scraper"
"miniflux.app/storage"
)
// FeedProcessor handles the processing of feed contents.
type FeedProcessor struct {
userID int64
store *storage.Storage
feed *model.Feed
scraperRules string
rewriteRules string
crawler bool
userAgent string
}
// WithCrawler enables the crawler.
func (f *FeedProcessor) WithCrawler(value bool) {
f.crawler = value
}
// WithScraperRules adds scraper rules to the processing.
func (f *FeedProcessor) WithScraperRules(rules string) {
f.scraperRules = rules
}
// WithUserAgent sets the User-Agent header for fetching article content.
func (f *FeedProcessor) WithUserAgent(userAgent string) {
f.userAgent = userAgent
}
// WithRewriteRules adds rewrite rules to the processing.
func (f *FeedProcessor) WithRewriteRules(rules string) {
f.rewriteRules = rules
}
// Process applies rewrite and scraper rules.
func (f *FeedProcessor) Process() {
for _, entry := range f.feed.Entries {
if f.crawler {
if f.store.EntryURLExists(f.userID, entry.URL) {
logger.Debug(`[FeedProcessor] Do not crawl existing entry URL: "%s"`, entry.URL)
} else {
content, err := scraper.Fetch(entry.URL, f.scraperRules, f.userAgent)
if err != nil {
logger.Error("[FeedProcessor] %v", err)
} else {
entry.Content = content
}
}
}
entry.Content = rewrite.Rewriter(entry.URL, entry.Content, f.rewriteRules)
entry.Content = sanitizer.Sanitize(entry.URL, entry.Content)
}
}
// NewFeedProcessor returns a new FeedProcessor.
func NewFeedProcessor(userID int64, store *storage.Storage, feed *model.Feed) *FeedProcessor {
return &FeedProcessor{userID: userID, store: store, feed: feed, crawler: false}
}
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