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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 rewrite // import "miniflux.app/reader/rewrite"
import (
"strings"
"miniflux.app/logger"
"miniflux.app/url"
)
// Rewriter modify item contents with a set of rewriting rules.
func Rewriter(entryURL, entryContent, customRewriteRules string) string {
rulesList := getPredefinedRewriteRules(entryURL)
if customRewriteRules != "" {
rulesList = customRewriteRules
}
rules := strings.Split(rulesList, ",")
rules = append(rules, "add_pdf_download_link")
logger.Debug(`[Rewrite] Applying rules %v for %q`, rules, entryURL)
for _, rule := range rules {
switch strings.TrimSpace(rule) {
case "add_image_title":
entryContent = addImageTitle(entryURL, entryContent)
case "add_mailto_subject":
entryContent = addMailtoSubject(entryURL, entryContent)
case "add_dynamic_image":
entryContent = addDynamicImage(entryURL, entryContent)
case "add_youtube_video":
entryContent = addYoutubeVideo(entryURL, entryContent)
case "add_pdf_download_link":
entryContent = addPDFLink(entryURL, entryContent)
}
}
return entryContent
}
func getPredefinedRewriteRules(entryURL string) string {
urlDomain := url.Domain(entryURL)
for domain, rules := range predefinedRules {
if strings.Contains(urlDomain, domain) {
return rules
}
}
return ""
}
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