add log replace color

log/colors.v

@@ -0,0 +1,109 @@
+// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+module log
+
+pub fn format(msg, open, close string) string {
+    return '\x1b[' + open + 'm' + msg + '\x1b[' + close + 'm'
+}
+
+pub fn bg_black(msg string) string {
+    return format(msg, '40', '49')
+}
+
+pub fn bg_blue(msg string) string {
+    return format(msg, '44', '49')
+}
+
+pub fn bg_cyan(msg string) string {
+    return format(msg, '46', '49')
+}
+
+pub fn bg_green(msg string) string {
+    return format(msg, '42', '49')
+}
+
+pub fn bg_magenta(msg string) string {
+    return format(msg, '45', '49')
+}
+
+pub fn bg_red(msg string) string {
+    return format(msg, '41', '49')
+}
+
+pub fn bg_white(msg string) string {
+    return format(msg, '47', '49')
+}
+
+pub fn bg_yellow(msg string) string {
+    return format(msg, '43', '49')
+}
+
+pub fn black(msg string) string {
+    return format(msg, '30', '39')
+}
+
+pub fn blue(msg string) string {
+    return format(msg, '34', '39')
+}
+
+pub fn bold(msg string) string {
+    return format(msg, '1', '22')
+}
+
+pub fn cyan(msg string) string {
+    return format(msg, '36', '39')
+}
+
+pub fn dim(msg string) string {
+    return format(msg, '2', '22')
+}
+
+pub fn green(msg string) string {
+    return format(msg, '32', '39')
+}
+
+pub fn gray(msg string) string {
+    return format(msg, '90', '39')
+}
+
+pub fn hidden(msg string) string {
+    return format(msg, '8', '28')
+}
+
+pub fn italic(msg string) string {
+    return format(msg, '3', '23')
+}
+
+pub fn inverse(msg string) string {
+    return format(msg, '7', '27')
+}
+
+pub fn magenta(msg string) string {
+    return format(msg, '35', '39')
+}
+
+pub fn reset(msg string) string {
+    return format(msg, '0', '0')
+}
+
+pub fn red(msg string) string {
+    return format(msg, '31', '39')
+}
+
+pub fn strikethrough(msg string) string {
+    return format(msg, '9', '29')
+}
+
+pub fn underline(msg string) string {
+    return format(msg, '4', '24')
+}
+
+pub fn white(msg string) string {
+    return format(msg, '37', '39')
+}
+
+pub fn yellow(msg string) string {
+    return format(msg, '33', '39')
+}

log/log.v

@@ -0,0 +1,51 @@
+module log
+
+const (
+    FATAL = 1
+    ERROR = 2 
+    WARN = 3
+    INFO = 4
+    DEBUG =5
+)
+
+struct Log{
+mut:
+    level int
+}
+
+
+pub fn (l mut Log) set_level(level int){
+    l.level = level
+}
+
+pub fn (l Log) f(s string){
+    panic(s)
+}
+
+pub fn (l Log) e(s string){
+    if l.level >= ERROR{
+        f := red('E')
+        println('[$f]$s')
+    }
+}
+
+pub fn (l Log) w(s string){
+    if l.level >= WARN{
+        f := yellow('W')
+        println('[$f]$s')
+    }
+}
+
+pub fn (l Log) i(s string){
+    if l.level >= INFO{
+        f := white('I')
+        println('[$f]$s')
+    }
+}
+
+pub fn (l Log) d(s string){
+    if l.level >= DEBUG{
+        f := blue('D')
+        println('[$f]$s')
+    }
+}