gosora/plugin_bbcode.go
Azareal 23a0bf3f41 Try hash based cache busting with stylesheets too.
Use a semantic blockquote element instead of span in plugin_bbcode for [quote]
You can now use <blockquote> elements directly in posts.
Added styling for quotes to Shadow, Cosora and Nox.
Experimenting with the padding on Nox's Control Panel Menu.
Tweaked the padding for the User Manager items on Nox.
Fixed #back filling up all the space it can on Tempra Simple.
Added a bit of padding below the last element before the footer on Tempra Simple.

Tempra Simple's misc.js is now loaded asynchronously.
Shadow's misc.js is now loaded asynchronously.
profile_member.js is now loaded asynchronously.
account.js is now loaded asynchronously.
2019-03-24 17:23:38 +10:00

398 lines
11 KiB
Go

package main
import (
"bytes"
"math/rand"
"regexp"
"strconv"
"time"
"github.com/Azareal/Gosora/common"
)
var bbcodeRandom *rand.Rand
var bbcodeInvalidNumber []byte
var bbcodeNoNegative []byte
var bbcodeMissingTag []byte
var bbcodeBold *regexp.Regexp
var bbcodeItalic *regexp.Regexp
var bbcodeUnderline *regexp.Regexp
var bbcodeStrikethrough *regexp.Regexp
var bbcodeURL *regexp.Regexp
var bbcodeURLLabel *regexp.Regexp
var bbcodeQuotes *regexp.Regexp
var bbcodeCode *regexp.Regexp
func init() {
common.Plugins.Add(&common.Plugin{UName: "bbcode", Name: "BBCode", Author: "Azareal", URL: "https://github.com/Azareal", Init: initBbcode, Deactivate: deactivateBbcode})
}
func initBbcode(plugin *common.Plugin) error {
plugin.AddHook("parse_assign", bbcodeFullParse)
bbcodeInvalidNumber = []byte("<span style='color: red;'>[Invalid Number]</span>")
bbcodeNoNegative = []byte("<span style='color: red;'>[No Negative Numbers]</span>")
bbcodeMissingTag = []byte("<span style='color: red;'>[Missing Tag]</span>")
bbcodeBold = regexp.MustCompile(`(?s)\[b\](.*)\[/b\]`)
bbcodeItalic = regexp.MustCompile(`(?s)\[i\](.*)\[/i\]`)
bbcodeUnderline = regexp.MustCompile(`(?s)\[u\](.*)\[/u\]`)
bbcodeStrikethrough = regexp.MustCompile(`(?s)\[s\](.*)\[/s\]`)
urlpattern := `(http|https|ftp|mailto*)(:??)\/\/([\.a-zA-Z\/]+)`
bbcodeURL = regexp.MustCompile(`\[url\]` + urlpattern + `\[/url\]`)
bbcodeURLLabel = regexp.MustCompile(`(?s)\[url=` + urlpattern + `\](.*)\[/url\]`)
bbcodeQuotes = regexp.MustCompile(`\[quote\](.*)\[/quote\]`)
bbcodeCode = regexp.MustCompile(`\[code\](.*)\[/code\]`)
bbcodeRandom = rand.New(rand.NewSource(time.Now().UnixNano()))
return nil
}
func deactivateBbcode(plugin *common.Plugin) {
plugin.RemoveHook("parse_assign", bbcodeFullParse)
}
func bbcodeRegexParse(msg string) string {
msg = bbcodeBold.ReplaceAllString(msg, "<b>$1</b>")
msg = bbcodeItalic.ReplaceAllString(msg, "<i>$1</i>")
msg = bbcodeUnderline.ReplaceAllString(msg, "<u>$1</u>")
msg = bbcodeStrikethrough.ReplaceAllString(msg, "<s>$1</s>")
msg = bbcodeURL.ReplaceAllString(msg, "<a href=''$1$2//$3' rel='nofollow'>$1$2//$3</i>")
msg = bbcodeURLLabel.ReplaceAllString(msg, "<a href=''$1$2//$3' rel='nofollow'>$4</i>")
msg = bbcodeQuotes.ReplaceAllString(msg, "<blockquote>$1</blockquote>")
//msg = bbcodeCode.ReplaceAllString(msg,"<span class='codequotes'>$1</span>")
return msg
}
// Only does the simple BBCode like [u], [b], [i] and [s]
func bbcodeSimpleParse(msg string) string {
var hasU, hasB, hasI, hasS bool
msgbytes := []byte(msg)
for i := 0; (i + 2) < len(msgbytes); i++ {
if msgbytes[i] == '[' && msgbytes[i+2] == ']' {
if msgbytes[i+1] == 'b' && !hasB {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasB = true
} else if msgbytes[i+1] == 'i' && !hasI {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasI = true
} else if msgbytes[i+1] == 'u' && !hasU {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasU = true
} else if msgbytes[i+1] == 's' && !hasS {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasS = true
}
i += 2
}
}
// There's an unclosed tag in there x.x
if hasI || hasU || hasB || hasS {
closeUnder := []byte("</u>")
closeItalic := []byte("</i>")
closeBold := []byte("</b>")
closeStrike := []byte("</s>")
if hasI {
msgbytes = append(msgbytes, closeItalic...)
}
if hasU {
msgbytes = append(msgbytes, closeUnder...)
}
if hasB {
msgbytes = append(msgbytes, closeBold...)
}
if hasS {
msgbytes = append(msgbytes, closeStrike...)
}
}
return string(msgbytes)
}
// Here for benchmarking purposes. Might add a plugin setting for disabling [code] as it has it's paws everywhere
func bbcodeParseWithoutCode(msg string) string {
var hasU, hasB, hasI, hasS bool
var complexBbc bool
msgbytes := []byte(msg)
for i := 0; (i + 3) < len(msgbytes); i++ {
if msgbytes[i] == '[' {
if msgbytes[i+2] != ']' {
if msgbytes[i+1] == '/' {
if msgbytes[i+3] == ']' {
if msgbytes[i+2] == 'b' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasB = false
} else if msgbytes[i+2] == 'i' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasI = false
} else if msgbytes[i+2] == 'u' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasU = false
} else if msgbytes[i+2] == 's' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasS = false
}
i += 3
} else {
complexBbc = true
}
} else {
complexBbc = true
}
} else {
if msgbytes[i+1] == 'b' && !hasB {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasB = true
} else if msgbytes[i+1] == 'i' && !hasI {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasI = true
} else if msgbytes[i+1] == 'u' && !hasU {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasU = true
} else if msgbytes[i+1] == 's' && !hasS {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasS = true
}
i += 2
}
}
}
// There's an unclosed tag in there x.x
if hasI || hasU || hasB || hasS {
closeUnder := []byte("</u>")
closeItalic := []byte("</i>")
closeBold := []byte("</b>")
closeStrike := []byte("</s>")
if hasI {
msgbytes = append(bytes.TrimSpace(msgbytes), closeItalic...)
}
if hasU {
msgbytes = append(bytes.TrimSpace(msgbytes), closeUnder...)
}
if hasB {
msgbytes = append(bytes.TrimSpace(msgbytes), closeBold...)
}
if hasS {
msgbytes = append(bytes.TrimSpace(msgbytes), closeStrike...)
}
}
// Copy the new complex parser over once the rough edges have been smoothed over
if complexBbc {
msg = string(msgbytes)
msg = bbcodeURL.ReplaceAllString(msg, "<a href='$1$2//$3' rel='nofollow'>$1$2//$3</i>")
msg = bbcodeURLLabel.ReplaceAllString(msg, "<a href='$1$2//$3' rel='nofollow'>$4</i>")
msg = bbcodeQuotes.ReplaceAllString(msg, "<blockquote>$1</blockquote>")
return bbcodeCode.ReplaceAllString(msg, "<span class='codequotes'>$1</span>")
}
return string(msgbytes)
}
// Does every type of BBCode
func bbcodeFullParse(msg string) string {
var hasU, hasB, hasI, hasS, hasC bool
var complexBbc bool
msgbytes := []byte(msg)
msgbytes = append(msgbytes, common.SpaceGap...)
for i := 0; i < len(msgbytes); i++ {
if msgbytes[i] == '[' {
if msgbytes[i+2] != ']' {
if msgbytes[i+1] == '/' {
if msgbytes[i+3] == ']' {
if !hasC {
if msgbytes[i+2] == 'b' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasB = false
} else if msgbytes[i+2] == 'i' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasI = false
} else if msgbytes[i+2] == 'u' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasU = false
} else if msgbytes[i+2] == 's' {
msgbytes[i] = '<'
msgbytes[i+3] = '>'
hasS = false
}
i += 3
}
} else {
if msgbytes[i+2] == 'c' && msgbytes[i+3] == 'o' && msgbytes[i+4] == 'd' && msgbytes[i+5] == 'e' && msgbytes[i+6] == ']' {
hasC = false
i += 7
}
complexBbc = true
}
} else {
if msgbytes[i+1] == 'c' && msgbytes[i+2] == 'o' && msgbytes[i+3] == 'd' && msgbytes[i+4] == 'e' && msgbytes[i+5] == ']' {
hasC = true
i += 6
}
complexBbc = true
}
} else if !hasC {
if msgbytes[i+1] == 'b' && !hasB {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasB = true
} else if msgbytes[i+1] == 'i' && !hasI {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasI = true
} else if msgbytes[i+1] == 'u' && !hasU {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasU = true
} else if msgbytes[i+1] == 's' && !hasS {
msgbytes[i] = '<'
msgbytes[i+2] = '>'
hasS = true
}
i += 2
}
}
}
// There's an unclosed tag in there somewhere x.x
if hasI || hasU || hasB || hasS {
closeUnder := []byte("</u>")
closeItalic := []byte("</i>")
closeBold := []byte("</b>")
closeStrike := []byte("</s>")
if hasI {
msgbytes = append(bytes.TrimSpace(msgbytes), closeItalic...)
}
if hasU {
msgbytes = append(bytes.TrimSpace(msgbytes), closeUnder...)
}
if hasB {
msgbytes = append(bytes.TrimSpace(msgbytes), closeBold...)
}
if hasS {
msgbytes = append(bytes.TrimSpace(msgbytes), closeStrike...)
}
msgbytes = append(msgbytes, common.SpaceGap...)
}
if complexBbc {
i := 0
var start, lastTag int
var outbytes []byte
for ; i < len(msgbytes); i++ {
if msgbytes[i] == '[' {
if msgbytes[i+1] == 'u' {
if msgbytes[i+2] == 'r' && msgbytes[i+3] == 'l' && msgbytes[i+4] == ']' {
i, start, lastTag, outbytes = bbcodeParseURL(i, start, lastTag, msgbytes, outbytes)
continue
}
} else if msgbytes[i+1] == 'r' {
if bytes.Equal(msgbytes[i+2:i+6], []byte("and]")) {
i, start, lastTag, outbytes = bbcodeParseRand(i, start, lastTag, msgbytes, outbytes)
}
}
}
}
if lastTag != i {
outbytes = append(outbytes, msgbytes[lastTag:]...)
}
if len(outbytes) != 0 {
msg = string(outbytes[0 : len(outbytes)-10])
} else {
msg = string(msgbytes[0 : len(msgbytes)-10])
}
//msg = bbcode_url.ReplaceAllString(msg,"<a href=\"$1$2//$3\" rel=\"nofollow\">$1$2//$3</i>")
msg = bbcodeURLLabel.ReplaceAllString(msg, "<a href='$1$2//$3' rel='nofollow'>$4</i>")
msg = bbcodeQuotes.ReplaceAllString(msg, "<blockquote>$1</blockquote>")
msg = bbcodeCode.ReplaceAllString(msg, "<span class='codequotes'>$1</span>")
} else {
msg = string(msgbytes[0 : len(msgbytes)-10])
}
return msg
}
// TODO: Strip the containing [url] so the media parser can work it's magic instead? Or do we want to allow something like [url=]label[/url] here?
func bbcodeParseURL(i int, start int, lastTag int, msgbytes []byte, outbytes []byte) (int, int, int, []byte) {
start = i + 5
outbytes = append(outbytes, msgbytes[lastTag:i]...)
i = start
i += common.PartialURLStringLen(string(msgbytes[start:]))
if !bytes.Equal(msgbytes[i:i+6], []byte("[/url]")) {
outbytes = append(outbytes, common.InvalidURL...)
return i, start, lastTag, outbytes
}
outbytes = append(outbytes, common.URLOpen...)
outbytes = append(outbytes, msgbytes[start:i]...)
outbytes = append(outbytes, common.URLOpen2...)
outbytes = append(outbytes, msgbytes[start:i]...)
outbytes = append(outbytes, common.URLClose...)
i += 6
lastTag = i
return i, start, lastTag, outbytes
}
func bbcodeParseRand(i int, start int, lastTag int, msgbytes []byte, outbytes []byte) (int, int, int, []byte) {
outbytes = append(outbytes, msgbytes[lastTag:i]...)
start = i + 6
i = start
for ; ; i++ {
if msgbytes[i] == '[' {
if !bytes.Equal(msgbytes[i+1:i+7], []byte("/rand]")) {
outbytes = append(outbytes, bbcodeMissingTag...)
return i, start, lastTag, outbytes
}
break
} else if (len(msgbytes) - 1) < (i + 10) {
outbytes = append(outbytes, bbcodeMissingTag...)
return i, start, lastTag, outbytes
}
}
number, err := strconv.ParseInt(string(msgbytes[start:i]), 10, 64)
if err != nil {
outbytes = append(outbytes, bbcodeInvalidNumber...)
return i, start, lastTag, outbytes
}
// TODO: Add support for negative numbers?
if number < 0 {
outbytes = append(outbytes, bbcodeNoNegative...)
return i, start, lastTag, outbytes
}
var dat []byte
if number == 0 {
dat = []byte("0")
} else {
dat = []byte(strconv.FormatInt((bbcodeRandom.Int63n(number)), 10))
}
outbytes = append(outbytes, dat...)
i += 7
lastTag = i
return i, start, lastTag, outbytes
}