gosora/plugin_bbcode.go
Azareal 01a692ab5b Added the word filter store and moved the word filter routes into the route package.
Added tests for the word filter store.
Added qgen.NewAcc() to reduce the amount of boilerplate needed for creating an accumulator.
Exposed the RecordError method on the accumulator.
Added an Add method to PluginList and removed AddPlugin() in favour of that.

More panel buttons on Nox should be styled now.
Added the panel_update_button_text phrase for future use.

More errors might be caught in the thumbnailer now.
Removed ls from .travis.yml, it was there for debugging Code Climate.
2018-08-04 21:46:36 +10:00

397 lines
11 KiB
Go

package main
import (
"bytes"
"math/rand"
"regexp"
"strconv"
"time"
"./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() error {
common.Plugins["bbcode"].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() {
common.Plugins["bbcode"].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, "<span class='postQuote'>$1</span>")
//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, "<span class='postQuote'>$1</span>")
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, "<span class='postQuote'>$1</span>")
msg = bbcodeCode.ReplaceAllString(msg, "<span class='codequotes'>$1</span>")
} else {
msg = string(msgbytes[0 : len(msgbytes)-10])
}
return msg
}
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.PartialURLBytesLen(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
}