413 lines
12 KiB
Go
413 lines
12 KiB
Go
package main
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//import "log"
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//import "fmt"
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import "bytes"
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//import "strings"
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import "strconv"
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import "regexp"
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import "time"
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import "math/rand"
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var random *rand.Rand
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var bbcode_invalid_number []byte
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var bbcode_no_negative []byte
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var bbcode_missing_tag []byte
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var bbcode_bold *regexp.Regexp
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var bbcode_italic *regexp.Regexp
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var bbcode_underline *regexp.Regexp
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var bbcode_strikethrough *regexp.Regexp
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var bbcode_url *regexp.Regexp
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var bbcode_url_label *regexp.Regexp
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var bbcode_quotes *regexp.Regexp
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var bbcode_code *regexp.Regexp
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func init() {
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plugins["bbcode"] = NewPlugin("bbcode","BBCode","Azareal","http://github.com/Azareal","","","",init_bbcode,nil,deactivate_bbcode,nil,nil)
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}
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func init_bbcode() error {
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//plugins["bbcode"].AddHook("parse_assign", bbcode_parse_without_code)
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plugins["bbcode"].AddHook("parse_assign", bbcode_full_parse)
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bbcode_invalid_number = []byte("<span style='color: red;'>[Invalid Number]</span>")
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bbcode_no_negative = []byte("<span style='color: red;'>[No Negative Numbers]</span>")
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bbcode_missing_tag = []byte("<span style='color: red;'>[Missing Tag]</span>")
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bbcode_bold = regexp.MustCompile(`(?s)\[b\](.*)\[/b\]`)
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bbcode_italic = regexp.MustCompile(`(?s)\[i\](.*)\[/i\]`)
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bbcode_underline = regexp.MustCompile(`(?s)\[u\](.*)\[/u\]`)
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bbcode_strikethrough = regexp.MustCompile(`(?s)\[s\](.*)\[/s\]`)
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urlpattern := `(http|https|ftp|mailto*)(:??)\/\/([\.a-zA-Z\/]+)`
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bbcode_url = regexp.MustCompile(`\[url\]` + urlpattern + `\[/url\]`)
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bbcode_url_label = regexp.MustCompile(`(?s)\[url=` + urlpattern + `\](.*)\[/url\]`)
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bbcode_quotes = regexp.MustCompile(`\[quote\](.*)\[/quote\]`)
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bbcode_code = regexp.MustCompile(`\[code\](.*)\[/code\]`)
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random = rand.New(rand.NewSource(time.Now().UnixNano()))
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return nil
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}
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func deactivate_bbcode() {
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//plugins["bbcode"].RemoveHook("parse_assign", bbcode_parse_without_code)
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plugins["bbcode"].RemoveHook("parse_assign", bbcode_full_parse)
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}
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func bbcode_regex_parse(msg string) string {
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msg = bbcode_bold.ReplaceAllString(msg,"<b>$1</b>")
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msg = bbcode_italic.ReplaceAllString(msg,"<i>$1</i>")
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msg = bbcode_underline.ReplaceAllString(msg,"<u>$1</u>")
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msg = bbcode_strikethrough.ReplaceAllString(msg,"<s>$1</s>")
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msg = bbcode_url.ReplaceAllString(msg,"<a href=''$1$2//$3' rel='nofollow'>$1$2//$3</i>")
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msg = bbcode_url_label.ReplaceAllString(msg,"<a href=''$1$2//$3' rel='nofollow'>$4</i>")
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msg = bbcode_quotes.ReplaceAllString(msg,"<span class='postQuote'>$1</span>")
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//msg = bbcode_code.ReplaceAllString(msg,"<span class='codequotes'>$1</span>")
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return msg
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}
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// Only does the simple BBCode like [u], [b], [i] and [s]
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func bbcode_simple_parse(msg string) string {
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var has_u, has_b, has_i, has_s bool
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msgbytes := []byte(msg)
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for i := 0; (i + 2) < len(msgbytes); i++ {
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if msgbytes[i] == '[' && msgbytes[i + 2] == ']' {
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if msgbytes[i + 1] == 'b' && !has_b {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_b = true
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} else if msgbytes[i + 1] == 'i' && !has_i {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_i = true
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} else if msgbytes[i + 1] == 'u' && !has_u {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_u = true
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} else if msgbytes[i + 1] == 's' && !has_s {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_s = true
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}
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i += 2
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}
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}
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// There's an unclosed tag in there x.x
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if has_i || has_u || has_b || has_s {
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close_under := []byte("</u>")
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close_italic := []byte("</i>")
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close_bold := []byte("</b>")
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close_strike := []byte("</s>")
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if has_i {
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msgbytes = append(msgbytes, close_italic...)
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}
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if has_u {
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msgbytes = append(msgbytes, close_under...)
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}
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if has_b {
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msgbytes = append(msgbytes, close_bold...)
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}
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if has_s {
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msgbytes = append(msgbytes, close_strike...)
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}
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}
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return string(msgbytes)
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}
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// Here for benchmarking purposes. Might add a plugin setting for disabling [code] as it has it's paws everywhere
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func bbcode_parse_without_code(msg string) string {
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var has_u, has_b, has_i, has_s bool
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var complex_bbc bool
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msgbytes := []byte(msg)
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for i := 0; (i + 3) < len(msgbytes); i++ {
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if msgbytes[i] == '[' {
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if msgbytes[i + 2] != ']' {
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if msgbytes[i + 1] == '/' {
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if msgbytes[i + 3] == ']' {
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if msgbytes[i + 2] == 'b' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_b = false
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} else if msgbytes[i + 2] == 'i' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_i = false
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} else if msgbytes[i + 2] == 'u' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_u = false
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} else if msgbytes[i + 2] == 's' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_s = false
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}
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i += 3
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} else {
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complex_bbc = true
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}
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} else {
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complex_bbc = true
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}
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} else {
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if msgbytes[i + 1] == 'b' && !has_b {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_b = true
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} else if msgbytes[i + 1] == 'i' && !has_i {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_i = true
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} else if msgbytes[i + 1] == 'u' && !has_u {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_u = true
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} else if msgbytes[i + 1] == 's' && !has_s {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_s = true
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}
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i += 2
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}
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}
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}
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// There's an unclosed tag in there x.x
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if has_i || has_u || has_b || has_s {
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close_under := []byte("</u>")
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close_italic := []byte("</i>")
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close_bold := []byte("</b>")
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close_strike := []byte("</s>")
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if has_i {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_italic...)
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}
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if has_u {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_under...)
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}
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if has_b {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_bold...)
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}
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if has_s {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_strike...)
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}
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}
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// Copy the new complex parser over once the rough edges have been smoothed over
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if complex_bbc {
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msg = bbcode_url.ReplaceAllString(msg,"<a href='$1$2//$3' rel='nofollow'>$1$2//$3</i>")
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msg = bbcode_url_label.ReplaceAllString(msg,"<a href='$1$2//$3' rel='nofollow'>$4</i>")
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msg = bbcode_quotes.ReplaceAllString(msg,"<span class='postQuote'>$1</span>")
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msg = bbcode_code.ReplaceAllString(msg,"<span class='codequotes'>$1</span>")
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}
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return string(msgbytes)
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}
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// Does every type of BBCode
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func bbcode_full_parse(msg string) string {
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var has_u, has_b, has_i, has_s, has_c bool
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var complex_bbc bool
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msgbytes := []byte(msg)
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msgbytes = append(msgbytes,space_gap...)
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//log.Print("BBCode Simple Pre:","`"+string(msgbytes)+"`")
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//log.Print("----")
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for i := 0; i < len(msgbytes); i++ {
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if msgbytes[i] == '[' {
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if msgbytes[i + 2] != ']' {
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if msgbytes[i + 1] == '/' {
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if msgbytes[i + 3] == ']' {
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if !has_c {
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if msgbytes[i + 2] == 'b' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_b = false
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} else if msgbytes[i + 2] == 'i' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_i = false
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} else if msgbytes[i + 2] == 'u' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_u = false
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} else if msgbytes[i + 2] == 's' {
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msgbytes[i] = '<'
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msgbytes[i + 3] = '>'
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has_s = false
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}
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i += 3
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}
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} else {
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if msgbytes[i+2] == 'c' && msgbytes[i+3] == 'o' && msgbytes[i+4] == 'd' && msgbytes[i+5] == 'e' && msgbytes[i+6] == ']' {
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has_c = false
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i += 7
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}
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//if msglen >= (i+6) {
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// log.Print("boo")
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// log.Print(msglen)
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// log.Print(i+6)
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// log.Print(string(msgbytes[i:i+6]))
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//}
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complex_bbc = true
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}
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} else {
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if msgbytes[i+1] == 'c' && msgbytes[i+2] == 'o' && msgbytes[i+3] == 'd' && msgbytes[i+4] == 'e' && msgbytes[i+5] == ']' {
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has_c = true
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i += 6
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}
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//if msglen >= (i+5) {
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// log.Print("boo2")
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// log.Print(string(msgbytes[i:i+5]))
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//}
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complex_bbc = true
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}
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} else if !has_c {
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if msgbytes[i + 1] == 'b' && !has_b {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_b = true
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} else if msgbytes[i + 1] == 'i' && !has_i {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_i = true
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} else if msgbytes[i + 1] == 'u' && !has_u {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_u = true
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} else if msgbytes[i + 1] == 's' && !has_s {
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msgbytes[i] = '<'
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msgbytes[i + 2] = '>'
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has_s = true
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}
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i += 2
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}
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}
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}
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// There's an unclosed tag in there somewhere x.x
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if has_i || has_u || has_b || has_s {
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close_under := []byte("</u>")
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close_italic := []byte("</i>")
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close_bold := []byte("</b>")
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close_strike := []byte("</s>")
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if has_i {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_italic...)
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}
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if has_u {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_under...)
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}
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if has_b {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_bold...)
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}
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if has_s {
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msgbytes = append(bytes.TrimSpace(msgbytes), close_strike...)
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}
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msgbytes = append(msgbytes,space_gap...)
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}
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if complex_bbc {
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i := 0
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var start, lastTag int
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var outbytes []byte
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//log.Print("BBCode Pre:","`"+string(msgbytes)+"`")
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//log.Print("----")
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for ; i < len(msgbytes); i++ {
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MainLoop:
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if msgbytes[i] == '[' {
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OuterComplex:
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if msgbytes[i + 1] == 'u' {
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if msgbytes[i+2] == 'r' && msgbytes[i+3] == 'l' && msgbytes[i+4] == ']' {
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start = i + 5
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outbytes = append(outbytes, msgbytes[lastTag:i]...)
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i = start
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i += partial_url_bytes_len(msgbytes[start:])
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//log.Print("Partial Bytes:",string(msgbytes[start:]))
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//log.Print("-----")
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if !bytes.Equal(msgbytes[i:i+6],[]byte("[/url]")) {
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//log.Print("Invalid Bytes:",string(msgbytes[i:i+6]))
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//log.Print("-----")
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outbytes = append(outbytes, invalid_url...)
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goto MainLoop
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}
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outbytes = append(outbytes, url_open...)
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outbytes = append(outbytes, msgbytes[start:i]...)
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outbytes = append(outbytes, url_open2...)
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outbytes = append(outbytes, msgbytes[start:i]...)
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outbytes = append(outbytes, url_close...)
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i += 6
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lastTag = i
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}
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} else if msgbytes[i + 1] == 'r' {
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if bytes.Equal(msgbytes[i+2:i+6],[]byte("and]")) {
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outbytes = append(outbytes, msgbytes[lastTag:i]...)
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start = i + 6
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i = start
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for ;; i++ {
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if msgbytes[i] == '[' {
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if !bytes.Equal(msgbytes[i+1:i+7],[]byte("/rand]")) {
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outbytes = append(outbytes, bbcode_missing_tag...)
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goto OuterComplex
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}
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break
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} else if (len(msgbytes) - 1) < (i + 10) {
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outbytes = append(outbytes, bbcode_missing_tag...)
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goto OuterComplex
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}
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}
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number, err := strconv.ParseInt(string(msgbytes[start:i]),10,64)
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if err != nil {
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outbytes = append(outbytes, bbcode_invalid_number...)
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goto MainLoop
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}
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// TO-DO: Add support for negative numbers?
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if number < 0 {
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outbytes = append(outbytes, bbcode_no_negative...)
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goto MainLoop
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}
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var dat []byte
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if number == 0 {
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dat = []byte("0")
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} else {
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dat = []byte(strconv.FormatInt((random.Int63n(number)),10))
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}
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outbytes = append(outbytes, dat...)
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//log.Print("Outputted the random number")
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i += 7
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lastTag = i
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}
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}
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}
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}
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//log.Print(string(outbytes))
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if lastTag != i {
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outbytes = append(outbytes, msgbytes[lastTag:]...)
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//log.Print("Outbytes:",`"`+string(outbytes)+`"`)
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//log.Print("----")
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}
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if len(outbytes) != 0 {
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//log.Print("BBCode Post:",`"`+string(outbytes[0:len(outbytes) - 10])+`"`)
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//log.Print("----")
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msg = string(outbytes[0:len(outbytes) - 10])
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} else {
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msg = string(msgbytes[0:len(msgbytes) - 10])
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}
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//msg = bbcode_url.ReplaceAllString(msg,"<a href=\"$1$2//$3\" rel=\"nofollow\">$1$2//$3</i>")
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msg = bbcode_url_label.ReplaceAllString(msg,"<a href='$1$2//$3' rel='nofollow'>$4</i>")
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msg = bbcode_quotes.ReplaceAllString(msg,"<span class='postQuote'>$1</span>")
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msg = bbcode_code.ReplaceAllString(msg,"<span class='codequotes'>$1</span>")
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} else {
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msg = string(msgbytes[0:len(msgbytes) - 10])
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}
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return msg
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}
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