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How to use stripLinePrefix method of report Package

Best Syzkaller code snippet using report.stripLinePrefix

linux.go

Source:linux.go

...169			if matchOops(line, oops1, ctx.ignores) {170				oops = oops1171				startPos = pos172				context = ctx.extractContext(line)173				//stripped, questionable := ctx.stripLinePrefix(line, context1)174				return175			}176		}177	}178	return179}180// Yes, it is complex, but all state and logic are tightly coupled. It's unclear how to simplify it.181// nolint: gocyclo182func (ctx *linux) findReport(output []byte, oops *oops, startPos int, context string) (183	endPos, reportEnd int, report []byte, prefix [][]byte) {184	// Prepend 5 lines preceding start of the report,185	// they can contain additional info related to the report.186	maxPrefix := 5187	if ctx.taskContext.MatchString(context) {188		// If we have CONFIG_PRINTK_CALLER, we collect more b/c it comes from the same task.189		maxPrefix = 50190	}191	secondReportPos := 0192	textLines := 0193	skipText := false194	for pos, next := 0, 0; pos < len(output); pos = next + 1 {195		next = bytes.IndexByte(output[pos:], '\n')196		if next != -1 {197			next += pos198		} else {199			next = len(output)200		}201		line := output[pos:next]202		context1 := ctx.extractContext(line)203		stripped, questionable := ctx.stripLinePrefix(line, context1)204		if pos < startPos {205			if context1 == context && len(stripped) != 0 && !questionable {206				prefix = append(prefix, append([]byte{}, stripped...))207				if len(prefix) > maxPrefix {208					prefix = prefix[1:]209				}210			}211			continue212		}213		oopsLine := pos == startPos214		for _, oops1 := range linuxOopses {215			if !matchOops(line, oops1, ctx.ignores) {216				if !oopsLine && secondReportPos == 0 {217					for _, pattern := range ctx.infoMessagesWithStack {218						if bytes.Contains(line, pattern) {219							secondReportPos = pos220							break221						}222					}223				}224				continue225			}226			endPos = next227			if !oopsLine && secondReportPos == 0 {228				if !matchesAny(line, ctx.reportStartIgnores) {229					secondReportPos = pos230				}231			}232		}233		if !oopsLine && (context1 != context || questionable) {234			continue235		}236		textLines++237		skipLine := skipText238		if bytes.Contains(line, []byte("Disabling lock debugging due to kernel taint")) {239			skipLine = true240		} else if textLines > 25 &&241			(bytes.Contains(line, []byte("Kernel panic - not syncing")) ||242				bytes.Contains(line, []byte("WARNING: possible circular locking dependency detected"))) {243			// If panic_on_warn set, then we frequently have 2 stacks:244			// one for the actual report (or maybe even more than one),245			// and then one for panic caused by panic_on_warn. This makes246			// reports unnecessary long and the panic (current) stack247			// is always present in the actual report. So we strip the248			// panic message. However, we check that we have enough lines249			// before the panic, because sometimes we have, for example,250			// a single WARNING line without a stack and then the panic251			// with the stack.252			// Oops messages frequently induce possible deadlock reports253			// because oops reporting introduces unexpected locking chains.254			// So if we have enough of the actual oops, strip the deadlock message.255			skipText = true256			skipLine = true257		}258		if !oopsLine && skipLine {259			continue260		}261		report = append(report, stripped...)262		report = append(report, '\n')263		if secondReportPos == 0 || context != "" && context != "console" {264			reportEnd = len(report)265		}266	}267	return268}269func (ctx *linux) stripLinePrefix(line []byte, context string) ([]byte, bool) {270	if last := len(line) - 1; last >= 0 && line[last] == '\r' {271		line = line[:last]272	}273	if context == "" {274		return line, false275	}276	questionable := ctx.questionableRe.Match(line) && !bytes.Contains(line, ctx.eoi)277	start := bytes.Index(line, []byte("] ")) + 2278	return line[start:], questionable279}280func (ctx *linux) extractContext(line []byte) string {281	match := ctx.consoleOutputRe.FindSubmatchIndex(line)282	if match == nil {283		return ""...

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    trace.Start(os.Stderr)4    defer trace.Stop()5    f()6}7func f() {8    r := &report{}9    g(r)10    fmt.Println(r)11}12func g(r *report) {13    err := fmt.Errorf("error")14    r.error(err)15}16type report struct {17}18func (r *report) error(err error) {19    r.err = r.stripLinePrefix(r.err)20    log.Printf("reporting error: %v", r.err)21}22func (r *report) stripLinePrefix(err error) error {23    _, file, line, ok := runtime.Caller(1)24    if !ok {25    }26    file = filepath.Base(file)27    lineStr := fmt.Sprintf("%d", line)28    return fmt.Errorf("%s:%s: %w", file, lineStr, err)29}

stripLinePrefix

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("1.txt")4	if err != nil {5		fmt.Println(err)6	}7	defer file.Close()8	scanner := bufio.NewScanner(file)

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    var canvas = svg.New(os.Stdout)4    canvas.Start(200, 200)5    canvas.Rect(0, 0, 200, 200)6    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")7    canvas.End()8}9import (10func main() {11    var canvas = svg.New(os.Stdout)12    canvas.Start(200, 200)13    canvas.Rect(0, 0, 200, 200)14    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")15    canvas.End()16}17import (18func main() {19    var canvas = svg.New(os.Stdout)20    canvas.Start(200, 200)21    canvas.Rect(0, 0, 200, 200)22    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")23    canvas.End()24}25import (26func main() {27    var canvas = svg.New(os.Stdout)28    canvas.Start(200, 200)29    canvas.Rect(0, 0, 200, 200)30    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")31    canvas.End()32}33import (34func main() {35    var canvas = svg.New(os.Stdout)36    canvas.Start(200, 200)37    canvas.Rect(0, 0, 200, 200)38    canvas.Text(10, 20, "Hello, World!", "fill:red;font-size:30px")

stripLinePrefix

Using AI Code Generation

1import (2func main() {3    report := gas.NewReport()4    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 1, "test"))5    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 2, "test"))6    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 3, "test"))7    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 4, "test"))8    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 5, "test"))9    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 6, "test"))10    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 7, "test"))11    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 8, "test"))12    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 9, "test"))13    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 10, "test"))14    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 11, "test"))15    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 12, "test"))16    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 13, "test"))17    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 14, "test"))18    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 15, "test"))19    report.Add(gas.NewIssue("This is a test issue", "test", "test", "test", 16, "test"))

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