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output.go
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package main
import (
"fmt"
"regexp"
"strconv"
"strings"
)
var tagMap = map[string]string{
"1": "b",
"2": "b",
"3": "i",
"4": "ins",
"5": "blink",
"9": "strike",
}
var colMap = map[string]string{
"0": "white",
"1": "red",
"2": "green",
"3": "yellow",
"4": "blue",
"5": "magenta",
"6": "cyan",
"7": "black",
"9": "white",
}
var color265 = map[string]string{
"0": "#000000",
"1": "#800000",
"2": "#008000",
"3": "#808000",
"4": "#000080",
"5": "#800080",
"6": "#008080",
"7": "#c0c0c0",
"8": "#808080",
"9": "#ff0000",
"10": "#00ff00",
"11": "#ffff00",
"12": "#0000ff",
"13": "#ff00ff",
"14": "#00ffff",
"15": "#ffffff",
"16": "#000000",
"17": "#00005f",
"18": "#000087",
"19": "#0000af",
"20": "#0000d7",
"21": "#0000ff",
"22": "#005f00",
"23": "#005f5f",
"24": "#005f87",
"25": "#005faf",
"26": "#005fd7",
"27": "#005fff",
"28": "#008700",
"29": "#00875f",
"30": "#008787",
"31": "#0087af",
"32": "#0087d7",
"33": "#0087ff",
"34": "#00af00",
"35": "#00af5f",
"36": "#00af87",
"37": "#00afaf",
"38": "#00afd7",
"39": "#00afff",
"40": "#00d700",
"41": "#00d75f",
"42": "#00d787",
"43": "#00d7af",
"44": "#00d7d7",
"45": "#00d7ff",
"46": "#00ff00",
"47": "#00ff5f",
"48": "#00ff87",
"49": "#00ffaf",
"50": "#00ffd7",
"51": "#00ffff",
"52": "#5f0000",
"53": "#5f005f",
"54": "#5f0087",
"55": "#5f00af",
"56": "#5f00d7",
"57": "#5f00ff",
"58": "#5f5f00",
"59": "#5f5f5f",
"60": "#5f5f87",
"61": "#5f5faf",
"62": "#5f5fd7",
"63": "#5f5fff",
"64": "#5f8700",
"65": "#5f875f",
"66": "#5f8787",
"67": "#5f87af",
"68": "#5f87d7",
"69": "#5f87ff",
"70": "#5faf00",
"71": "#5faf5f",
"72": "#5faf87",
"73": "#5fafaf",
"74": "#5fafd7",
"75": "#5fafff",
"76": "#5fd700",
"77": "#5fd75f",
"78": "#5fd787",
"79": "#5fd7af",
"80": "#5fd7d7",
"81": "#5fd7ff",
"82": "#5fff00",
"83": "#5fff5f",
"84": "#5fff87",
"85": "#5fffaf",
"86": "#5fffd7",
"87": "#5fffff",
"88": "#870000",
"89": "#87005f",
"90": "#870087",
"91": "#8700af",
"92": "#8700d7",
"93": "#8700ff",
"94": "#875f00",
"95": "#875f5f",
"96": "#875f87",
"97": "#875faf",
"98": "#875fd7",
"99": "#875fff",
"100": "#878700",
"101": "#87875f",
"102": "#878787",
"103": "#8787af",
"104": "#8787d7",
"105": "#8787ff",
"106": "#87af00",
"107": "#87af5f",
"108": "#87af87",
"109": "#87afaf",
"110": "#87afd7",
"111": "#87afff",
"112": "#87d700",
"113": "#87d75f",
"114": "#87d787",
"115": "#87d7af",
"116": "#87d7d7",
"117": "#87d7ff",
"118": "#87ff00",
"119": "#87ff5f",
"120": "#87ff87",
"121": "#87ffaf",
"122": "#87ffd7",
"123": "#87ffff",
"124": "#af0000",
"125": "#af005f",
"126": "#af0087",
"127": "#af00af",
"128": "#af00d7",
"129": "#af00ff",
"130": "#af5f00",
"131": "#af5f5f",
"132": "#af5f87",
"133": "#af5faf",
"134": "#af5fd7",
"135": "#af5fff",
"136": "#af8700",
"137": "#af875f",
"138": "#af8787",
"139": "#af87af",
"140": "#af87d7",
"141": "#af87ff",
"142": "#afaf00",
"143": "#afaf5f",
"144": "#afaf87",
"145": "#afafaf",
"146": "#afafd7",
"147": "#afafff",
"148": "#afd700",
"149": "#afd75f",
"150": "#afd787",
"151": "#afd7af",
"152": "#afd7d7",
"153": "#afd7ff",
"154": "#afff00",
"155": "#afff5f",
"156": "#afff87",
"157": "#afffaf",
"158": "#afffd7",
"159": "#afffff",
"160": "#d70000",
"161": "#d7005f",
"162": "#d70087",
"163": "#d700af",
"164": "#d700d7",
"165": "#d700ff",
"166": "#d75f00",
"167": "#d75f5f",
"168": "#d75f87",
"169": "#d75faf",
"170": "#d75fd7",
"171": "#d75fff",
"172": "#d78700",
"173": "#d7875f",
"174": "#d78787",
"175": "#d787af",
"176": "#d787d7",
"177": "#d787ff",
"178": "#d7af00",
"179": "#d7af5f",
"180": "#d7af87",
"181": "#d7afaf",
"182": "#d7afd7",
"183": "#d7afff",
"184": "#d7d700",
"185": "#d7d75f",
"186": "#d7d787",
"187": "#d7d7af",
"188": "#d7d7d7",
"189": "#d7d7ff",
"190": "#d7ff00",
"191": "#d7ff5f",
"192": "#d7ff87",
"193": "#d7ffaf",
"194": "#d7ffd7",
"195": "#d7ffff",
"196": "#ff0000",
"197": "#ff005f",
"198": "#ff0087",
"199": "#ff00af",
"200": "#ff00d7",
"201": "#ff00ff",
"202": "#ff5f00",
"203": "#ff5f5f",
"204": "#ff5f87",
"205": "#ff5faf",
"206": "#ff5fd7",
"207": "#ff5fff",
"208": "#ff8700",
"209": "#ff875f",
"210": "#ff8787",
"211": "#ff87af",
"212": "#ff87d7",
"213": "#ff87ff",
"214": "#ffaf00",
"215": "#ffaf5f",
"216": "#ffaf87",
"217": "#ffafaf",
"218": "#ffafd7",
"219": "#ffafff",
"220": "#ffd700",
"221": "#ffd75f",
"222": "#ffd787",
"223": "#ffd7af",
"224": "#ffd7d7",
"225": "#ffd7ff",
"226": "#ffff00",
"227": "#ffff5f",
"228": "#ffff87",
"229": "#ffffaf",
"230": "#ffffd7",
"231": "#ffffff",
"232": "#080808",
"233": "#121212",
"234": "#1c1c1c",
"235": "#262626",
"236": "#303030",
"237": "#3a3a3a",
"238": "#444444",
"239": "#4e4e4e",
"240": "#585858",
"241": "#626262",
"242": "#6c6c6c",
"243": "#767676",
"244": "#808080",
"245": "#8a8a8a",
"246": "#949494",
"247": "#9e9e9e",
"248": "#a8a8a8",
"249": "#b2b2b2",
"250": "#bcbcbc",
"251": "#c6c6c6",
"252": "#d0d0d0",
"253": "#dadada",
"254": "#e4e4e4",
"255": "#eeeeee",
}
var col256 = regexp.MustCompile(`^\[([34]8);5;(\d+)m`)
var colrgb = regexp.MustCompile(`^\[([34]8);2;(\d+);(\d+);(\d+)m`)
var escape = regexp.MustCompile(`^\[(\d+;)?(\d+;)?(\d+;)?(\d+;)?(\d+)([A-Za-z])`)
func toHtml(raw []byte) []byte {
var output = strings.TrimSuffix(string(raw), "\x00")
output = strings.ReplaceAll(output, "\r", "")
output = strings.Trim(output, "\n")
if output == "" {
return []byte{}
}
output = strings.ReplaceAll(output, "&", "&")
output = strings.ReplaceAll(output, "<", "<")
output = strings.ReplaceAll(output, ">", ">")
output = strings.ReplaceAll(output, "\"", """)
output = strings.ReplaceAll(output, "'", "'")
var html = ""
tokens := strings.Split(output, "\x1b")
for _, token := range tokens {
if token == "" {
continue
}
if strings.HasPrefix(token, "[H") ||
strings.HasPrefix(token, "[s") ||
strings.HasPrefix(token, "[u") ||
strings.HasPrefix(token, "[J") ||
strings.HasPrefix(token, "[K") {
html += token[2:]
} else if strings.HasPrefix(token, "[#;#R") {
html += token[5:]
} else if strings.HasPrefix(token, "[#") ||
strings.HasPrefix(token, "[0m") ||
strings.HasPrefix(token, "[0J") ||
strings.HasPrefix(token, "[1J") ||
strings.HasPrefix(token, "[2J") ||
strings.HasPrefix(token, "[0K") ||
strings.HasPrefix(token, "[1K") ||
strings.HasPrefix(token, "[2K") ||
strings.HasPrefix(token, "[6n") {
html += token[3:]
} else if strings.HasPrefix(token, "[1m") ||
strings.HasPrefix(token, "[2m") {
html += "<b>"
html += token[3:]
html += "</b>"
} else if strings.HasPrefix(token, "[3m") {
html += "<i>"
html += token[3:]
html += "</i>"
} else if strings.HasPrefix(token, "[4m") {
html += "<ins>"
html += token[3:]
html += "</ins>"
} else if strings.HasPrefix(token, "[5m") {
html += "<blink>"
html += token[3:]
html += "</blink>"
} else if strings.HasPrefix(token, "[7m") ||
strings.HasPrefix(token, "[8m") {
html += token[3:]
} else if strings.HasPrefix(token, "[9m") {
html += "<strike>"
html += token[3:]
html += "</strike>"
} else if strings.HasPrefix(token, "[22m") ||
strings.HasPrefix(token, "[23m") ||
strings.HasPrefix(token, "[24m") ||
strings.HasPrefix(token, "[25m") ||
strings.HasPrefix(token, "[28m") ||
strings.HasPrefix(token, "[27m") ||
strings.HasPrefix(token, "[29m") {
html += token[4:]
} else if token == "7" || token == "8" {
html += token[1:]
} else {
var btok = []byte(token)
var found = col256.FindSubmatch(btok)
if len(found) == 3 {
if len(token) == len(found[0]) {
continue
}
color, ok := color265[string(found[2])]
if ok {
if string(found[1]) == "48" {
html += fmt.Sprintf("<span style=\"background-color: %s\">", color)
} else {
html += fmt.Sprintf("<span style=\"color: %s\">", color)
}
}
html += token[len(found[0]):]
if ok {
html += "</span>"
}
continue
}
found = colrgb.FindSubmatch(btok)
if len(found) == 5 {
if len(token) == len(found[0]) {
continue
}
r, _ := strconv.Atoi(string(found[2]))
g, _ := strconv.Atoi(string(found[3]))
b, _ := strconv.Atoi(string(found[4]))
r &= 0xFF
g &= 0xFF
b &= 0xFF
if string(found[1]) == "48" {
html += fmt.Sprintf("<span style=\"background-color: #%02x%02x%02x\">", r, g, b)
} else {
html += fmt.Sprintf("<span style=\"color: #%02x%02x%02x\">", r, g, b)
}
html += token[len(found[0]):]
html += "</span>"
continue
}
found = escape.FindSubmatch(btok)
if len(found) < 1 {
html += token
continue
} else if string(found[len(found)-1]) != "m" {
html += token[len(found[0]):]
continue
} else if len(token) == len(found[0]) {
continue
}
var tags = ""
for _, e := range found {
e := string(e)
if len(e) < 1 {
continue
}
if e[len(e)-1] == ';' {
e = e[:len(e)-1]
}
if e == "0" {
html += tags
tags = ""
continue
} else if tag, ok := tagMap[e]; ok {
html += fmt.Sprintf("<%s>", tag)
tags += fmt.Sprintf("</%s>", tag)
} else if len(e) == 2 && (e[0] == '3' || e[0] == '4' || e[0] == '9') && e[1] != '8' {
color, _ := colMap[string(e[1])]
if e[0] == '4' {
html += fmt.Sprintf("<span style=\"background-color: %s\">", color)
} else {
html += fmt.Sprintf("<span style=\"color: %s\">", color)
}
tags += "</span>"
} else if len(e) == 3 && e[0] == '1' && e[1] == '0' && e[2] != '8' {
color, _ := colMap[string(e[1])]
html += fmt.Sprintf("<span style=\"background-color: %s\">", color)
tags += "</span>"
}
}
html += token[len(found[0]):]
html += tags
}
}
html = strings.ReplaceAll(html, "\n", "<br>\n")
return []byte(html)
}