ci,tools: implement silent mode in `./v test-parser -S examples/cli.v`

.github/workflows/ci.yml

@@ -825,14 +825,14 @@ jobs:
         run: make -j4
       - name: Run test-parser
         run: |
-          ./v test-parser examples/hello_world.v
-          ./v test-parser examples/hanoi.v
-          ./v test-parser examples/fibonacci.v
-          ./v test-parser examples/cli.v
-          ./v test-parser examples/json.v
-          ./v test-parser examples/vmod.v
-          ./v test-parser examples/regex_example.v
-          ./v test-parser examples/2048/2048.v
+          ./v test-parser -S examples/hello_world.v
+          ./v test-parser -S examples/hanoi.v
+          ./v test-parser -S examples/fibonacci.v
+          ./v test-parser -S examples/cli.v
+          ./v test-parser -S examples/json.v
+          ./v test-parser -S examples/vmod.v
+          ./v test-parser -S examples/regex_example.v
+          ./v test-parser -S examples/2048/2048.v
 
   parser-silent-fuzzing:
     name: Parser silent mode fuzzing
@@ -856,11 +856,11 @@ jobs:
           zzuf -R '\x00-\x20\x7f-\xff' -r0.01 < examples/vmod.v > examples/vmod_fuzz.v
           zzuf -R '\x00-\x20\x7f-\xff' -r0.01 < examples/regex_example.v > examples/regex_example_fuzz.v
           zzuf -R '\x00-\x20\x7f-\xff' -r0.01 < examples/2048/2048.v > examples/2048/2048_fuzz.v
-          ./v test-parser examples/hello_world_fuzz.v
-          ./v test-parser examples/hanoi_fuzz.v
-          ./v test-parser examples/cli_fuzz.v
-          ./v test-parser examples/regex_example_fuzz.v
-          ./v test-parser examples/2048/2048_fuzz.v
+          ./v test-parser -S examples/hello_world_fuzz.v
+          ./v test-parser -S examples/hanoi_fuzz.v
+          ./v test-parser -S examples/cli_fuzz.v
+          ./v test-parser -S examples/regex_example_fuzz.v
+          ./v test-parser -S examples/2048/2048_fuzz.v
 
   v-up-works-on-ubuntu:
     runs-on: ubuntu-20.04

cmd/tools/vtest-parser.v

@@ -26,6 +26,8 @@ mut:
 	is_help    bool
 	is_worker  bool
 	is_verbose bool
+	is_silent  bool // do not print any status/progress during processing, just failures.
+	is_linear  bool // print linear progress log, without trying to do term cursor up + \r msg. Easier to use in a CI job
 	timeout_ms int
 	myself     string   // path to this executable, so the supervisor can launch worker processes
 	all_paths  []string // all files given to the supervisor process
@@ -56,6 +58,7 @@ fn main() {
 		}
 		mut source := os.read_file(context.path) ?
 		source = source[..context.cut_index]
+
 		go fn (ms int) {
 			time.sleep_ms(ms)
 			exit(ecode_timeout)
@@ -106,6 +109,8 @@ fn process_cli_args() &Context {
 	fp.skip_executable()
 	context.is_help = fp.bool('help', `h`, false, 'Show help/usage screen.')
 	context.is_verbose = fp.bool('verbose', `v`, false, 'Be more verbose.')
+	context.is_silent = fp.bool('silent', `S`, false, 'Do not print progress at all.')
+	context.is_linear = fp.bool('linear', `L`, false, 'Print linear progress log. Suitable for CI.')
 	context.period_ms = fp.int('progress_ms', `s`, 500, 'print a status report periodically, the period is given in milliseconds.')
 	context.is_worker = fp.bool('worker', `w`, false, 'worker specific flag - is this a worker process, that can crash/panic.')
 	context.cut_index = fp.int('cut_index', `c`, 1, 'worker specific flag - cut index in the source file, everything before that will be parsed, the rest - ignored.')
@@ -226,7 +231,11 @@ fn (mut context Context) process_whole_file_in_worker(path string) (int, int) {
 			line := part.count('\n') + 1
 			last_line := part.all_after_last('\n')
 			col := last_line.len
-			err := if is_panic { red('parser failure: panic') } else { red('parser failure: crash, ${ecode_details[res.exit_code.str()]}') }
+			err := if is_panic {
+				red('parser failure: panic')
+			} else {
+				red('parser failure: crash, ${ecode_details[res.exit_code.str()]}')
+			}
 			path_to_line := bold('$path:$line:$col:')
 			err_line := last_line.trim_left('\t')
 			println('$path_to_line $err')
@@ -240,7 +249,9 @@ fn (mut context Context) process_whole_file_in_worker(path string) (int, int) {
 
 fn (mut context Context) start_printing() {
 	context.stop_print = false
+	if !context.is_linear && !context.is_silent {
 		println('\n')
+	}
 	go context.print_periodic_status()
 }
 
@@ -250,15 +261,32 @@ fn (mut context Context) stop_printing() {
 }
 
 fn (mut context Context) print_status() {
+	if context.is_silent {
+		return
+	}
+	if (context.cut_index == 1) && (context.max_index == 0) {
+		return
+	}
+	msg := '>   ${context.path:-30} | index: ${context.cut_index:5}/${context.max_index - 1:5}'
+	if context.is_linear {
+		eprintln(msg)
+		return
+	}
 	term.cursor_up(1)
-	eprint('\r  >   ${context.path:-30} | index: ${context.cut_index:5}/${context.max_index - 1:5}\n')
+	eprint('\r  $msg\n')
 }
 
 fn (mut context Context) print_periodic_status() {
+	context.print_status()
+	mut printed_at_least_once := false
 	for !context.stop_print {
 		context.print_status()
 		for i := 0; i < 10 && !context.stop_print; i++ {
 			time.sleep_ms(context.period_ms / 10)
+			if context.cut_index > 50 && !printed_at_least_once {
+				context.print_status()
+				printed_at_least_once = true
+			}
 		}
 	}
 	context.print_status()