1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// 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 (
"strconv"
"strings"
"text/scanner"
"miniflux.app/logger"
"miniflux.app/url"
)
type rule struct {
name string
args []string
}
// 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 := parseRules(rulesList)
rules = append(rules, rule{name: "add_pdf_download_link"})
logger.Debug(`[Rewrite] Applying rules %v for %q`, rules, entryURL)
for _, rule := range rules {
entryContent = applyRule(entryURL, entryContent, rule)
}
return entryContent
}
func parseRules(rulesText string) (rules []rule) {
scan := scanner.Scanner{Mode: scanner.ScanIdents | scanner.ScanStrings}
scan.Init(strings.NewReader(rulesText))
for {
switch scan.Scan() {
case scanner.Ident:
rules = append(rules, rule{name: scan.TokenText()})
case scanner.String:
if l := len(rules) - 1; l >= 0 {
text := scan.TokenText()
text, _ = strconv.Unquote(text)
rules[l].args = append(rules[l].args, text)
}
case scanner.EOF:
return
}
}
}
func applyRule(entryURL, entryContent string, rule rule) string {
switch rule.name {
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_invidious_video":
entryContent = addInvidiousVideo(entryURL, entryContent)
case "add_youtube_video_using_invidious_player":
entryContent = addYoutubeVideoUsingInvidiousPlayer(entryURL, entryContent)
case "add_youtube_video_from_id":
entryContent = addYoutubeVideoFromId(entryContent)
case "add_pdf_download_link":
entryContent = addPDFLink(entryURL, entryContent)
case "nl2br":
entryContent = replaceLineFeeds(entryContent)
case "convert_text_link", "convert_text_links":
entryContent = replaceTextLinks(entryContent)
case "fix_medium_images":
entryContent = fixMediumImages(entryURL, entryContent)
case "use_noscript_figure_images":
entryContent = useNoScriptImages(entryURL, entryContent)
case "replace":
// Format: replace("search-term"|"replace-term")
if len(rule.args) >= 2 {
entryContent = replaceCustom(entryContent, rule.args[0], rule.args[1])
} else {
logger.Debug("[Rewrite] Cannot find search and replace terms for replace rule %s", rule)
}
case "remove":
// Format: remove("#selector > .element, .another")
if len(rule.args) >= 1 {
entryContent = removeCustom(entryContent, rule.args[0])
} else {
logger.Debug("[Rewrite] Cannot find selector for remove rule %s", rule)
}
case "add_castopod_episode":
entryContent = addCastopodEpisode(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 ""
}
|
