term: add term.colorize/2, use it in the tests. Support ConEmuANSI = ON too.

cmd/tools/vtest-all.v

@@ -77,7 +77,7 @@ fn (mut cmd Command) run() {
 	sw := time.new_stopwatch({})
 	cmd.ecode = os.system(cmd.line)
 	spent := sw.elapsed().milliseconds()
-	println(term.yellow('> Running: "$cmd.line" took: $spent ms.'))
+	println(term.colorize(term.yellow, '> Running: "$cmd.line" took: $spent ms.'))
 	println('')
 }
 
@@ -90,15 +90,16 @@ fn (commands []Command) summary() {
 	oks := commands.filter(it.ecode == 0)
 	fails := commands.filter(it.ecode != 0)
 	println('')
-	println(term.header(term.yellow(term.bold('Summary of `v test-all`:')), '-'))
-	println(term.yellow('Total runtime: $spent ms'))
+	println(term.header(term.colorize(term.yellow, term.colorize(term.bold, 'Summary of `v test-all`:')),
+		'-'))
+	println(term.colorize(term.yellow, 'Total runtime: $spent ms'))
 	for ocmd in oks {
 		msg := if ocmd.okmsg != '' { ocmd.okmsg } else { ocmd.line }
-		println(term.green('>          OK: $msg '))
+		println(term.colorize(term.green, '>          OK: $msg '))
 	}
 	for fcmd in fails {
 		msg := if fcmd.errmsg != '' { fcmd.errmsg } else { fcmd.line }
-		println(term.red('>      Failed: $msg '))
+		println(term.colorize(term.red, '>      Failed: $msg '))
 	}
 	if fails.len > 0 {
 		exit(1)

cmd/tools/vtest-compiler-full.v

@@ -6,7 +6,6 @@ import v.pref
 
 const (
 	skip_with_fsanitize_memory    = [
-		'vlib/x/websocket/websocket_test.v',
 		'vlib/encoding/csv/reader_test.v',
 		'vlib/net/tcp_test.v',
 		'vlib/net/tcp_simple_client_server_test.v',
@@ -17,8 +16,8 @@ const (
 		'vlib/orm/orm_test.v',
 		'vlib/sqlite/sqlite_test.v',
 		'vlib/vweb/tests/vweb_test.v',
-		'vlib/x/websocket/websocket_test.v',
 		'vlib/v/tests/unsafe_test.v',
+		'vlib/x/websocket/websocket_test.v',
 		'vlib/net/http/http_httpbin_test.v',
 	]
 	skip_with_fsanitize_address   = [

vlib/benchmark/benchmark.v

@@ -189,19 +189,19 @@ pub fn (b &Benchmark) step_message_skip(msg string) string {
 
 // total_message returns a string with total summary of the benchmark run.
 pub fn (b &Benchmark) total_message(msg string) string {
-	mut tmsg := '${term.bold('Summary:')} '
+	mut tmsg := '${term.colorize(term.bold, 'Summary:')} '
 	if b.nfail > 0 {
-		tmsg += term.bold(term.red('$b.nfail failed')) + ', '
+		tmsg += term.colorize(term.bold, term.colorize(term.red, '$b.nfail failed')) + ', '
 	}
 	if b.nok > 0 {
-		tmsg += term.bold(term.green('$b.nok passed')) + ', '
+		tmsg += term.colorize(term.bold, term.colorize(term.green, '$b.nok passed')) + ', '
 	}
 	if b.nskip > 0 {
-		tmsg += term.bold(term.yellow('$b.nskip skipped')) + ', '
+		tmsg += term.colorize(term.bold, term.colorize(term.yellow, '$b.nskip skipped')) + ', '
 	}
-	tmsg += '$b.ntotal total. ${term.bold('Runtime:')} ${b.bench_timer.elapsed().microseconds() /
+	tmsg += '$b.ntotal total. ${term.colorize(term.bold, 'Runtime:')} ${b.bench_timer.elapsed().microseconds() /
 		1000} ms.\n'
-	tmsg += term.gray(msg)
+	tmsg += term.colorize(term.gray, msg)
 	return tmsg
 }
 

vlib/term/term.v

@@ -30,8 +30,7 @@ pub fn can_show_color_on_stderr() bool {
 // If colors are not allowed, returns a given string.
 pub fn ok_message(s string) string {
 	return if can_show_color_on_stdout() {
-		msg := ' $s '
-		green(msg)
+		green(' $s ')
 	} else {
 		s
 	}
@@ -41,8 +40,7 @@ pub fn ok_message(s string) string {
 // If colors are not allowed, returns a given string.
 pub fn fail_message(s string) string {
 	return if can_show_color_on_stdout() {
-		msg := ' $s '
-		inverse(bg_white(bold(red(msg))))
+		inverse(bg_white(bold(red(' $s '))))
 	} else {
 		s
 	}
@@ -58,6 +56,16 @@ pub fn warn_message(s string) string {
 	}
 }
 
+// colorize returns a colored string by running the specified `cfn` over
+// the message `s`, only if colored output is supported by the terminal.
+// Example: term.colorize(term.yellow, 'the message')
+pub fn colorize(cfn fn (string) string, s string) string {
+	if can_show_color_on_stdout() {
+		return cfn(s)
+	}
+	return s
+}
+
 // h_divider returns a horizontal divider line with a dynamic width,
 // that depends on the current terminal settings.
 // If an empty string is passed in, print enough spaces to make a new line
@@ -109,6 +117,9 @@ fn supports_escape_sequences(fd int) bool {
 		return false
 	}
 	$if windows {
+		if os.getenv('ConEmuANSI') == 'ON' {
+			return true
+		}
 		// 4 is enable_virtual_terminal_processing
 		return (is_atty(fd) & 0x0004) > 0
 	} $else {