v0.0.76

.idea/inspectionProfiles/Project_Default.xml

@@ -1,6 +1,7 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
+    <inspection_tool class="GoMixedReceiverTypes" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="LanguageDetectionInspection" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />

cmdext/builder.go

@@ -0,0 +1,73 @@
+package cmdext
+
+import (
+	"fmt"
+	"time"
+)
+
+type CommandRunner struct {
+	program  string
+	args     []string
+	timeout  *time.Duration
+	env      []string
+	listener []CommandListener
+}
+
+func Runner(program string) *CommandRunner {
+	return &CommandRunner{
+		program:  program,
+		args:     make([]string, 0),
+		timeout:  nil,
+		env:      make([]string, 0),
+		listener: make([]CommandListener, 0),
+	}
+}
+
+func (r *CommandRunner) Arg(arg string) *CommandRunner {
+	r.args = append(r.args, arg)
+	return r
+}
+
+func (r *CommandRunner) Args(arg []string) *CommandRunner {
+	r.args = append(r.args, arg...)
+	return r
+}
+
+func (r *CommandRunner) Timeout(timeout time.Duration) *CommandRunner {
+	r.timeout = &timeout
+	return r
+}
+
+func (r *CommandRunner) Env(key, value string) *CommandRunner {
+	r.env = append(r.env, fmt.Sprintf("%s=%s", key, value))
+	return r
+}
+
+func (r *CommandRunner) RawEnv(env string) *CommandRunner {
+	r.env = append(r.env, env)
+	return r
+}
+
+func (r *CommandRunner) Envs(env []string) *CommandRunner {
+	r.env = append(r.env, env...)
+	return r
+}
+
+func (r *CommandRunner) Listen(lstr CommandListener) *CommandRunner {
+	r.listener = append(r.listener, lstr)
+	return r
+}
+
+func (r *CommandRunner) ListenStdout(lstr func(string)) *CommandRunner {
+	r.listener = append(r.listener, genericCommandListener{_readStdoutLine: &lstr})
+	return r
+}
+
+func (r *CommandRunner) ListenStderr(lstr func(string)) *CommandRunner {
+	r.listener = append(r.listener, genericCommandListener{_readStderrLine: &lstr})
+	return r
+}
+
+func (r *CommandRunner) Run() (CommandResult, error) {
+	return run(*r)
+}

cmdext/cmdrunner.go

@@ -0,0 +1,129 @@
+package cmdext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
+	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
+	"os/exec"
+	"time"
+)
+
+type CommandResult struct {
+	StdOut          string
+	StdErr          string
+	StdCombined     string
+	ExitCode        int
+	CommandTimedOut bool
+}
+
+func run(opt CommandRunner) (CommandResult, error) {
+	cmd := exec.Command(opt.program, opt.args...)
+
+	cmd.Env = append(cmd.Env, opt.env...)
+
+	stdoutPipe, err := cmd.StdoutPipe()
+	if err != nil {
+		return CommandResult{}, err
+	}
+
+	stderrPipe, err := cmd.StderrPipe()
+	if err != nil {
+		return CommandResult{}, err
+	}
+
+	preader := pipeReader{
+		stdout: stdoutPipe,
+		stderr: stderrPipe,
+	}
+
+	err = cmd.Start()
+	if err != nil {
+		return CommandResult{}, err
+	}
+
+	type resultObj struct {
+		stdout      string
+		stderr      string
+		stdcombined string
+		err         error
+	}
+
+	outputChan := make(chan resultObj)
+	go func() {
+		// we need to first fully read the pipes and then call Wait
+		// see https://pkg.go.dev/os/exec#Cmd.StdoutPipe
+
+		stdout, stderr, stdcombined, err := preader.Read(opt.listener)
+		if err != nil {
+			outputChan <- resultObj{stdout, stderr, stdcombined, err}
+		}
+
+		err = cmd.Wait()
+		if err != nil {
+			outputChan <- resultObj{stdout, stderr, stdcombined, err}
+		}
+
+		outputChan <- resultObj{stdout, stderr, stdcombined, nil}
+	}()
+
+	var timeoutChan <-chan time.Time = make(chan time.Time, 1)
+	if opt.timeout != nil {
+		timeoutChan = time.After(*opt.timeout)
+	}
+
+	select {
+
+	case <-timeoutChan:
+		_ = cmd.Process.Kill()
+		for _, lstr := range opt.listener {
+			lstr.Timeout()
+		}
+
+		if fallback, ok := syncext.ReadChannelWithTimeout(outputChan, mathext.Min(32*time.Millisecond, *opt.timeout)); ok {
+			// most of the time the cmd.Process.Kill() should also ahve finished the pipereader
+			// and we can at least return the already collected stdout, stderr, etc
+			return CommandResult{
+				StdOut:          fallback.stdout,
+				StdErr:          fallback.stderr,
+				StdCombined:     fallback.stdcombined,
+				ExitCode:        -1,
+				CommandTimedOut: true,
+			}, nil
+		} else {
+			return CommandResult{
+				StdOut:          "",
+				StdErr:          "",
+				StdCombined:     "",
+				ExitCode:        -1,
+				CommandTimedOut: true,
+			}, nil
+		}
+
+	case outobj := <-outputChan:
+		if exiterr, ok := outobj.err.(*exec.ExitError); ok {
+			excode := exiterr.ExitCode()
+			for _, lstr := range opt.listener {
+				lstr.Finished(excode)
+			}
+			return CommandResult{
+				StdOut:          outobj.stdout,
+				StdErr:          outobj.stderr,
+				StdCombined:     outobj.stdcombined,
+				ExitCode:        excode,
+				CommandTimedOut: false,
+			}, nil
+		} else if err != nil {
+			return CommandResult{}, err
+		} else {
+			for _, lstr := range opt.listener {
+				lstr.Finished(0)
+			}
+			return CommandResult{
+				StdOut:          outobj.stdout,
+				StdErr:          outobj.stderr,
+				StdCombined:     outobj.stdcombined,
+				ExitCode:        0,
+				CommandTimedOut: false,
+			}, nil
+		}
+	}
+}

cmdext/cmdrunner_test.go

@@ -0,0 +1,198 @@
+package cmdext
+
+import (
+	"testing"
+	"time"
+)
+
+func TestStdout(t *testing.T) {
+
+	res1, err := Runner("printf").Arg("hello").Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.StdErr != "" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "hello" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "hello\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestStderr(t *testing.T) {
+
+	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"error\", file=sys.stderr, end='')").Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.StdErr != "error" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "error\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestStdcombined(t *testing.T) {
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"1\", file=sys.stderr, flush=True); time.sleep(0.1); print(\"2\", file=sys.stdout, flush=True); time.sleep(0.1); print(\"3\", file=sys.stderr, flush=True)").
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.StdErr != "1\n3\n" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "2\n" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "1\n2\n3\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestPartialRead(t *testing.T) {
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"first message\", flush=True); time.sleep(5); print(\"cant see me\", flush=True);").
+		Timeout(100 * time.Millisecond).
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if !res1.CommandTimedOut {
+		t.Errorf("!CommandTimedOut")
+	}
+	if res1.StdErr != "" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "first message\n" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "first message\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestPartialReadStderr(t *testing.T) {
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"first message\", file=sys.stderr, flush=True); time.sleep(5); print(\"cant see me\", file=sys.stderr, flush=True);").
+		Timeout(100 * time.Millisecond).
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if !res1.CommandTimedOut {
+		t.Errorf("!CommandTimedOut")
+	}
+	if res1.StdErr != "first message\n" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "first message\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestReadUnflushedStdout(t *testing.T) {
+
+	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stdout, end='')").Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.StdErr != "" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "message101" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "message101\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestReadUnflushedStderr(t *testing.T) {
+
+	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stderr, end='')").Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.StdErr != "message101" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "message101\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestPartialReadUnflushed(t *testing.T) {
+	t.SkipNow()
+
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"first message\", end=''); time.sleep(5); print(\"cant see me\", end='');").
+		Timeout(100 * time.Millisecond).
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if !res1.CommandTimedOut {
+		t.Errorf("!CommandTimedOut")
+	}
+	if res1.StdErr != "" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "first message" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "first message" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
+func TestPartialReadUnflushedStderr(t *testing.T) {
+	t.SkipNow()
+
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"first message\", file=sys.stderr, end=''); time.sleep(5); print(\"cant see me\", file=sys.stderr, end='');").
+		Timeout(100 * time.Millisecond).
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if !res1.CommandTimedOut {
+		t.Errorf("!CommandTimedOut")
+	}
+	if res1.StdErr != "first message" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "first message" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}

cmdext/helper.go

@@ -0,0 +1,12 @@
+package cmdext
+
+import "time"
+
+func RunCommand(program string, args []string, timeout *time.Duration) (CommandResult, error) {
+	b := Runner(program)
+	b = b.Args(args)
+	if timeout != nil {
+		b = b.Timeout(*timeout)
+	}
+	return b.Run()
+}

cmdext/listener.go

@@ -0,0 +1,57 @@
+package cmdext
+
+type CommandListener interface {
+	ReadRawStdout([]byte)
+	ReadRawStderr([]byte)
+
+	ReadStdoutLine(string)
+	ReadStderrLine(string)
+
+	Finished(int)
+	Timeout()
+}
+
+type genericCommandListener struct {
+	_readRawStdout  *func([]byte)
+	_readRawStderr  *func([]byte)
+	_readStdoutLine *func(string)
+	_readStderrLine *func(string)
+	_finished       *func(int)
+	_timeout        *func()
+}
+
+func (g genericCommandListener) ReadRawStdout(v []byte) {
+	if g._readRawStdout != nil {
+		(*g._readRawStdout)(v)
+	}
+}
+
+func (g genericCommandListener) ReadRawStderr(v []byte) {
+	if g._readRawStderr != nil {
+		(*g._readRawStderr)(v)
+	}
+}
+
+func (g genericCommandListener) ReadStdoutLine(v string) {
+	if g._readStdoutLine != nil {
+		(*g._readStdoutLine)(v)
+	}
+}
+
+func (g genericCommandListener) ReadStderrLine(v string) {
+	if g._readStderrLine != nil {
+		(*g._readStderrLine)(v)
+	}
+}
+
+func (g genericCommandListener) Finished(v int) {
+	if g._finished != nil {
+		(*g._finished)(v)
+	}
+}
+
+func (g genericCommandListener) Timeout() {
+	if g._timeout != nil {
+		(*g._timeout)()
+	}
+}

cmdext/pipereader.go

@@ -0,0 +1,146 @@
+package cmdext
+
+import (
+	"bufio"
+	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
+	"io"
+	"sync"
+)
+
+type pipeReader struct {
+	stdout io.ReadCloser
+	stderr io.ReadCloser
+}
+
+// Read ready stdout and stdin until finished
+// also splits both pipes into lines and calld the listener
+func (pr *pipeReader) Read(listener []CommandListener) (string, string, string, error) {
+	type combevt struct {
+		line string
+		stop bool
+	}
+
+	errch := make(chan error, 8)
+
+	wg := sync.WaitGroup{}
+
+	// [1] read raw stdout
+
+	wg.Add(1)
+	stdoutBufferReader, stdoutBufferWriter := io.Pipe()
+	stdout := ""
+	go func() {
+		buf := make([]byte, 128)
+		for true {
+			n, out := pr.stdout.Read(buf)
+
+			if n > 0 {
+				txt := string(buf[:n])
+				stdout += txt
+				_, _ = stdoutBufferWriter.Write(buf[:n])
+				for _, lstr := range listener {
+					lstr.ReadRawStdout(buf[:n])
+				}
+			}
+			if out == io.EOF {
+				break
+			}
+			if out != nil {
+				errch <- out
+				break
+			}
+		}
+		_ = stdoutBufferWriter.Close()
+		wg.Done()
+	}()
+
+	// [2] read raw stderr
+
+	wg.Add(1)
+	stderrBufferReader, stderrBufferWriter := io.Pipe()
+	stderr := ""
+	go func() {
+		buf := make([]byte, 128)
+		for true {
+			n, err := pr.stderr.Read(buf)
+
+			if n > 0 {
+				txt := string(buf[:n])
+				stderr += txt
+				_, _ = stderrBufferWriter.Write(buf[:n])
+				for _, lstr := range listener {
+					lstr.ReadRawStderr(buf[:n])
+				}
+			}
+			if err == io.EOF {
+				break
+			}
+			if err != nil {
+				errch <- err
+				break
+			}
+		}
+		_ = stderrBufferWriter.Close()
+		wg.Done()
+	}()
+
+	combch := make(chan combevt, 32)
+
+	// [3] collect stdout line-by-line
+
+	wg.Add(1)
+	go func() {
+		scanner := bufio.NewScanner(stdoutBufferReader)
+		for scanner.Scan() {
+			txt := scanner.Text()
+			for _, lstr := range listener {
+				lstr.ReadStdoutLine(txt)
+			}
+			combch <- combevt{txt, false}
+		}
+		combch <- combevt{"", true}
+		wg.Done()
+	}()
+
+	// [4] collect stderr line-by-line
+
+	wg.Add(1)
+	go func() {
+		scanner := bufio.NewScanner(stderrBufferReader)
+		for scanner.Scan() {
+			txt := scanner.Text()
+			for _, lstr := range listener {
+				lstr.ReadStderrLine(txt)
+			}
+			combch <- combevt{txt, false}
+		}
+		combch <- combevt{"", true}
+		wg.Done()
+	}()
+
+	// [5] combine stdcombined
+
+	wg.Add(1)
+	stdcombined := ""
+	go func() {
+		stopctr := 0
+		for stopctr < 2 {
+			vvv := <-combch
+			if vvv.stop {
+				stopctr++
+			} else {
+				stdcombined += vvv.line + "\n" // this comes from bufio.Scanner and has no newlines...
+			}
+		}
+		wg.Done()
+	}()
+
+	// wait for all (5) goroutines to finish
+	wg.Wait()
+
+	if err, ok := syncext.ReadNonBlocking(errch); ok {
+		return "", "", "", err
+	}
+
+	return stdout, stderr, stdcombined, nil
+}

confext/confParser.go

@@ -14,9 +14,21 @@ import (
 // ApplyEnvOverrides overrides field values from environment variables
 //
 // fields must be tagged with `env:"env_key"`
-func ApplyEnvOverrides[T any](c *T) error {
-
+//
+// only works on exported fields
+//
+// fields without an env tag are ignored
+// fields with an `env:"-"` tag are ignore
+//
+// sub-structs are recursively parsed (if they have an env tag) and the env-variable keys are delimited by the delim parameter
+// sub-structs with `env:""` are also parsed, but the delimited is skipped (they are handled as if they were one level higher)
+func ApplyEnvOverrides[T any](c *T, delim string) error {
 	rval := reflect.ValueOf(c).Elem()
+
+	return processEnvOverrides(rval, delim, "")
+}
+
+func processEnvOverrides(rval reflect.Value, delim string, prefix string) error {
 	rtyp := rval.Type()
 
 	for i := 0; i < rtyp.NumField(); i++ {
@@ -24,12 +36,36 @@ func ApplyEnvOverrides[T any](c *T) error {
 		rsfield := rtyp.Field(i)
 		rvfield := rval.Field(i)
 
-		envkey := rsfield.Tag.Get("env")
-		if envkey == "" {
+		if !rsfield.IsExported() {
 			continue
 		}
 
-		envval, efound := os.LookupEnv(envkey)
+		if rvfield.Kind() == reflect.Struct {
+
+			envkey, found := rsfield.Tag.Lookup("env")
+			if !found || envkey == "-" {
+				continue
+			}
+
+			subPrefix := prefix
+			if envkey != "" {
+				subPrefix = subPrefix + envkey + delim
+			}
+
+			err := processEnvOverrides(rvfield, delim, subPrefix)
+			if err != nil {
+				return err
+			}
+		}
+
+		envkey := rsfield.Tag.Get("env")
+		if envkey == "" || envkey == "-" {
+			continue
+		}
+
+		fullEnvKey := prefix + envkey
+
+		envval, efound := os.LookupEnv(fullEnvKey)
 		if !efound {
 			continue
 		}
@@ -38,86 +74,86 @@ func ApplyEnvOverrides[T any](c *T) error {
 
 			rvfield.Set(reflect.ValueOf(envval))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, envval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
 
 		} else if rvfield.Type() == reflect.TypeOf(int(0)) {
 
 			envint, err := strconv.ParseInt(envval, 10, bits.UintSize)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(int(envint)))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, envval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
 
 		} else if rvfield.Type() == reflect.TypeOf(int64(0)) {
 
 			envint, err := strconv.ParseInt(envval, 10, 64)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int64 (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int64 (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(int64(envint)))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, envval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
 
 		} else if rvfield.Type() == reflect.TypeOf(int32(0)) {
 
 			envint, err := strconv.ParseInt(envval, 10, 32)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(int32(envint)))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, envval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
 
 		} else if rvfield.Type() == reflect.TypeOf(int8(0)) {
 
 			envint, err := strconv.ParseInt(envval, 10, 8)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(int8(envint)))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, envval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
 
 		} else if rvfield.Type() == reflect.TypeOf(time.Duration(0)) {
 
 			dur, err := timeext.ParseDurationShortString(envval)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to duration (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to duration (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(dur))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, dur.String())
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, dur.String())
 
 		} else if rvfield.Type() == reflect.TypeOf(time.UnixMilli(0)) {
 
 			tim, err := time.Parse(time.RFC3339Nano, envval)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to time.time (value := '%s')", envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to time.time (value := '%s')", fullEnvKey, envval))
 			}
 
 			rvfield.Set(reflect.ValueOf(tim))
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", envkey, tim.String())
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, tim.String())
 
 		} else if rvfield.Type().ConvertibleTo(reflect.TypeOf(int(0))) {
 
 			envint, err := strconv.ParseInt(envval, 10, 8)
 			if err != nil {
-				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to <%s, ,int> (value := '%s')", rvfield.Type().Name(), envkey, envval))
+				return errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to <%s, ,int> (value := '%s')", rvfield.Type().Name(), fullEnvKey, envval))
 			}
 
 			envcvl := reflect.ValueOf(envint).Convert(rvfield.Type())
 
 			rvfield.Set(envcvl)
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%v'\n", envkey, envcvl.Interface())
+			fmt.Printf("[CONF] Overwrite config '%s' with '%v'\n", fullEnvKey, envcvl.Interface())
 
 		} else if rvfield.Type().ConvertibleTo(reflect.TypeOf("")) {
 
@@ -125,7 +161,7 @@ func ApplyEnvOverrides[T any](c *T) error {
 
 			rvfield.Set(envcvl)
 
-			fmt.Printf("[CONF] Overwrite config '%s' with '%v'\n", envkey, envcvl.Interface())
+			fmt.Printf("[CONF] Overwrite config '%s' with '%v'\n", fullEnvKey, envcvl.Interface())
 
 		} else {
 			return errors.New(fmt.Sprintf("Unknown kind/type in config: [ %s | %s ]", rvfield.Kind().String(), rvfield.Type().String()))

confext/confParser_test.go

@@ -1,6 +1,7 @@
 package confext
 
 import (
+	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
 	"testing"
 	"time"
 )
@@ -40,7 +41,7 @@ func TestApplyEnvOverridesNoop(t *testing.T) {
 
 	output := input
 
-	err := ApplyEnvOverrides(&output)
+	err := ApplyEnvOverrides(&output, ".")
 	if err != nil {
 		t.Errorf("%v", err)
 		t.FailNow()
@@ -92,7 +93,7 @@ func TestApplyEnvOverridesSimple(t *testing.T) {
 	t.Setenv("TEST_V8", "1min4s")
 	t.Setenv("TEST_V9", "2009-11-10T23:00:00Z")
 
-	err := ApplyEnvOverrides(&data)
+	err := ApplyEnvOverrides(&data, ".")
 	if err != nil {
 		t.Errorf("%v", err)
 		t.FailNow()
@@ -109,6 +110,109 @@ func TestApplyEnvOverridesSimple(t *testing.T) {
 	assertEqual(t, data.V9, time.Unix(1257894000, 0).UTC())
 }
 
+func TestApplyEnvOverridesRecursive(t *testing.T) {
+
+	type subdata struct {
+		V1 int           `env:"SUB_V1"`
+		VX string        ``
+		V2 string        `env:"SUB_V2"`
+		V8 time.Duration `env:"SUB_V3"`
+		V9 time.Time     `env:"SUB_V4"`
+	}
+
+	type testdata struct {
+		V1   int     `env:"TEST_V1"`
+		VX   string  ``
+		Sub1 subdata ``
+		Sub2 subdata `env:"TEST_V2"`
+		Sub3 subdata `env:"TEST_V3"`
+		Sub4 subdata `env:""`
+		V5   string  `env:"-"`
+	}
+
+	data := testdata{
+		V1: 1,
+		VX: "2",
+		V5: "no",
+		Sub1: subdata{
+			V1: 3,
+			VX: "4",
+			V2: "5",
+			V8: 6 * time.Second,
+			V9: time.Date(2000, 1, 7, 1, 1, 1, 0, time.UTC),
+		},
+		Sub2: subdata{
+			V1: 8,
+			VX: "9",
+			V2: "10",
+			V8: 11 * time.Second,
+			V9: time.Date(2000, 1, 12, 1, 1, 1, 0, timeext.TimezoneBerlin),
+		},
+		Sub3: subdata{
+			V1: 13,
+			VX: "14",
+			V2: "15",
+			V8: 16 * time.Second,
+			V9: time.Date(2000, 1, 17, 1, 1, 1, 0, timeext.TimezoneBerlin),
+		},
+		Sub4: subdata{
+			V1: 18,
+			VX: "19",
+			V2: "20",
+			V8: 21 * time.Second,
+			V9: time.Date(2000, 1, 22, 1, 1, 1, 0, timeext.TimezoneBerlin),
+		},
+	}
+
+	t.Setenv("TEST_V1", "999")
+	t.Setenv("-", "yes")
+
+	t.Setenv("TEST_V2_SUB_V1", "846")
+	t.Setenv("TEST_V2_SUB_V2", "222_hello_world")
+	t.Setenv("TEST_V2_SUB_V3", "1min4s")
+	t.Setenv("TEST_V2_SUB_V4", "2009-11-10T23:00:00Z")
+
+	t.Setenv("TEST_V3_SUB_V1", "33846")
+	t.Setenv("TEST_V3_SUB_V2", "33_hello_world")
+	t.Setenv("TEST_V3_SUB_V3", "33min4s")
+	t.Setenv("TEST_V3_SUB_V4", "2033-11-10T23:00:00Z")
+
+	t.Setenv("SUB_V1", "11")
+	t.Setenv("SUB_V2", "22")
+	t.Setenv("SUB_V3", "33min")
+	t.Setenv("SUB_V4", "2044-01-01T00:00:00Z")
+
+	err := ApplyEnvOverrides(&data, "_")
+	if err != nil {
+		t.Errorf("%v", err)
+		t.FailNow()
+	}
+
+	assertEqual(t, data.V1, 999)
+	assertEqual(t, data.VX, "2")
+	assertEqual(t, data.V5, "no")
+	assertEqual(t, data.Sub1.V1, 3)
+	assertEqual(t, data.Sub1.VX, "4")
+	assertEqual(t, data.Sub1.V2, "5")
+	assertEqual(t, data.Sub1.V8, time.Second*6)
+	assertEqual(t, data.Sub1.V9, time.Unix(947206861, 0).UTC())
+	assertEqual(t, data.Sub2.V1, 846)
+	assertEqual(t, data.Sub2.VX, "9")
+	assertEqual(t, data.Sub2.V2, "222_hello_world")
+	assertEqual(t, data.Sub2.V8, time.Second*64)
+	assertEqual(t, data.Sub2.V9, time.Unix(1257894000, 0).UTC())
+	assertEqual(t, data.Sub3.V1, 33846)
+	assertEqual(t, data.Sub3.VX, "14")
+	assertEqual(t, data.Sub3.V2, "33_hello_world")
+	assertEqual(t, data.Sub3.V8, time.Second*1984)
+	assertEqual(t, data.Sub3.V9, time.Unix(2015276400, 0).UTC())
+	assertEqual(t, data.Sub4.V1, 11)
+	assertEqual(t, data.Sub4.VX, "19")
+	assertEqual(t, data.Sub4.V2, "22")
+	assertEqual(t, data.Sub4.V8, time.Second*1980)
+	assertEqual(t, data.Sub4.V9, time.Unix(2335219200, 0).UTC())
+}
+
 func assertEqual[T comparable](t *testing.T, actual T, expected T) {
 	if actual != expected {
 		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)

cryptext/aes.go

@@ -0,0 +1,68 @@
+package cryptext
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/base64"
+	"errors"
+	"golang.org/x/crypto/scrypt"
+	"io"
+)
+
+// https://stackoverflow.com/a/18819040/1761622
+
+func EncryptAESSimple(password, text []byte) ([]byte, error) {
+
+	key, err := scrypt.Key(password, nil, 32768, 8, 1, 32) // this is not 100% correct, rounds too low and salt is missing
+	if err != nil {
+		return nil, err
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	b := base64.StdEncoding.EncodeToString(text)
+	ciphertext := make([]byte, aes.BlockSize+len(b))
+
+	iv := ciphertext[:aes.BlockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		return nil, err
+	}
+
+	cfb := cipher.NewCFBEncrypter(block, iv)
+	cfb.XORKeyStream(ciphertext[aes.BlockSize:], []byte(b))
+
+	return ciphertext, nil
+}
+
+func DecryptAESSimple(password, text []byte) ([]byte, error) {
+
+	key, err := scrypt.Key(password, nil, 32768, 8, 1, 32) // this is not 100% correct, rounds too low and salt is missing
+	if err != nil {
+		return nil, err
+	}
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(text) < aes.BlockSize {
+		return nil, errors.New("ciphertext too short")
+	}
+
+	iv := text[:aes.BlockSize]
+	text = text[aes.BlockSize:]
+	cfb := cipher.NewCFBDecrypter(block, iv)
+	cfb.XORKeyStream(text, text)
+
+	data, err := base64.StdEncoding.DecodeString(string(text))
+	if err != nil {
+		return nil, err
+	}
+
+	return data, nil
+}

cryptext/aes_test.go

@@ -0,0 +1,22 @@
+package cryptext
+
+import "testing"
+
+func TestEncryptAESSimple(t *testing.T) {
+
+	pw := []byte("hunter12")
+
+	str1 := []byte("Hello World")
+
+	str2, err := EncryptAESSimple(pw, str1)
+	if err != nil {
+		panic(err)
+	}
+
+	str3, err := DecryptAESSimple(pw, str2)
+	if err != nil {
+		panic(err)
+	}
+
+	assertEqual(t, string(str1), string(str3))
+}

cryptext/passHash.go

@@ -0,0 +1,365 @@
+package cryptext
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
+	"golang.org/x/crypto/bcrypt"
+	"strconv"
+	"strings"
+)
+
+const LatestPassHashVersion = 4
+
+// PassHash
+// - [v0]: plaintext password ( `0|...` )
+// - [v1]: sha256(plaintext)
+// - [v2]: seed | sha256<seed>(plaintext)
+// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]
+// - [v4]: bcrypt(plaintext) | [hex(totp)]
+type PassHash string
+
+func (ph PassHash) Valid() bool {
+	_, _, _, _, _, valid := ph.Data()
+	return valid
+}
+
+func (ph PassHash) HasTOTP() bool {
+	_, _, _, otp, _, _ := ph.Data()
+	return otp
+}
+
+func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bool, _totpsecret []byte, _valid bool) {
+
+	split := strings.Split(string(ph), "|")
+	if len(split) == 0 {
+		return -1, nil, nil, false, nil, false
+	}
+
+	version, err := strconv.ParseInt(split[0], 10, 32)
+	if err != nil {
+		return -1, nil, nil, false, nil, false
+	}
+
+	if version == 0 {
+		if len(split) != 2 {
+			return -1, nil, nil, false, nil, false
+		}
+		return int(version), nil, []byte(split[1]), false, nil, true
+	}
+
+	if version == 1 {
+		if len(split) != 2 {
+			return -1, nil, nil, false, nil, false
+		}
+		payload, err := base64.RawStdEncoding.DecodeString(split[1])
+		if err != nil {
+			return -1, nil, nil, false, nil, false
+		}
+		return int(version), nil, payload, false, nil, true
+	}
+
+	//
+	if version == 2 {
+		if len(split) != 3 {
+			return -1, nil, nil, false, nil, false
+		}
+		seed, err := base64.RawStdEncoding.DecodeString(split[1])
+		if err != nil {
+			return -1, nil, nil, false, nil, false
+		}
+		payload, err := base64.RawStdEncoding.DecodeString(split[2])
+		if err != nil {
+			return -1, nil, nil, false, nil, false
+		}
+		return int(version), seed, payload, false, nil, true
+	}
+
+	if version == 3 {
+		if len(split) != 4 {
+			return -1, nil, nil, false, nil, false
+		}
+		seed, err := base64.RawStdEncoding.DecodeString(split[1])
+		if err != nil {
+			return -1, nil, nil, false, nil, false
+		}
+		payload, err := base64.RawStdEncoding.DecodeString(split[2])
+		if err != nil {
+			return -1, nil, nil, false, nil, false
+		}
+		totp := false
+		totpsecret := make([]byte, 0)
+		if split[3] != "0" {
+			totpsecret, err = hex.DecodeString(split[3])
+			totp = true
+		}
+		return int(version), seed, payload, totp, totpsecret, true
+	}
+
+	if version == 4 {
+		if len(split) != 3 {
+			return -1, nil, nil, false, nil, false
+		}
+		payload := []byte(split[1])
+		totp := false
+		totpsecret := make([]byte, 0)
+		if split[2] != "0" {
+			totpsecret, err = hex.DecodeString(split[3])
+			totp = true
+		}
+		return int(version), nil, payload, totp, totpsecret, true
+	}
+
+	return -1, nil, nil, false, nil, false
+}
+
+func (ph PassHash) Verify(plainpass string, totp *string) bool {
+	version, seed, payload, hastotp, totpsecret, valid := ph.Data()
+	if !valid {
+		return false
+	}
+
+	if hastotp && totp == nil {
+		return false
+	}
+
+	if version == 0 {
+		return langext.ArrEqualsExact([]byte(plainpass), payload)
+	}
+
+	if version == 1 {
+		return langext.ArrEqualsExact(hash256(plainpass), payload)
+	}
+
+	if version == 2 {
+		return langext.ArrEqualsExact(hash256Seeded(plainpass, seed), payload)
+	}
+
+	if version == 3 {
+		if !hastotp {
+			return langext.ArrEqualsExact(hash256Seeded(plainpass, seed), payload)
+		} else {
+			return langext.ArrEqualsExact(hash256Seeded(plainpass, seed), payload) && totpext.Validate(totpsecret, *totp)
+		}
+	}
+
+	if version == 4 {
+		if !hastotp {
+			return bcrypt.CompareHashAndPassword(payload, []byte(plainpass)) == nil
+		} else {
+			return bcrypt.CompareHashAndPassword(payload, []byte(plainpass)) == nil && totpext.Validate(totpsecret, *totp)
+		}
+	}
+
+	return false
+}
+
+func (ph PassHash) NeedsPasswordUpgrade() bool {
+	version, _, _, _, _, valid := ph.Data()
+	return valid && version < LatestPassHashVersion
+}
+
+func (ph PassHash) Upgrade(plainpass string) (PassHash, error) {
+	version, _, _, hastotp, totpsecret, valid := ph.Data()
+	if !valid {
+		return "", errors.New("invalid password")
+	}
+	if version == LatestPassHashVersion {
+		return ph, nil
+	}
+	if hastotp {
+		return HashPassword(plainpass, totpsecret)
+	} else {
+		return HashPassword(plainpass, nil)
+	}
+}
+
+func (ph PassHash) ClearTOTP() (PassHash, error) {
+	version, _, _, _, _, valid := ph.Data()
+	if !valid {
+		return "", errors.New("invalid PassHash")
+	}
+
+	if version == 0 {
+		return ph, nil
+	}
+
+	if version == 1 {
+		return ph, nil
+	}
+
+	if version == 2 {
+		return ph, nil
+	}
+
+	if version == 3 {
+		split := strings.Split(string(ph), "|")
+		split[3] = "0"
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
+	if version == 4 {
+		split := strings.Split(string(ph), "|")
+		split[2] = "0"
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
+	return "", errors.New("unknown version")
+}
+
+func (ph PassHash) WithTOTP(totpSecret []byte) (PassHash, error) {
+	version, _, _, _, _, valid := ph.Data()
+	if !valid {
+		return "", errors.New("invalid PassHash")
+	}
+
+	if version == 0 {
+		return "", errors.New("version does not support totp, needs upgrade")
+	}
+
+	if version == 1 {
+		return "", errors.New("version does not support totp, needs upgrade")
+	}
+
+	if version == 2 {
+		return "", errors.New("version does not support totp, needs upgrade")
+	}
+
+	if version == 3 {
+		split := strings.Split(string(ph), "|")
+		split[3] = hex.EncodeToString(totpSecret)
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
+	if version == 4 {
+		split := strings.Split(string(ph), "|")
+		split[2] = hex.EncodeToString(totpSecret)
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
+	return "", errors.New("unknown version")
+}
+
+func (ph PassHash) Change(newPlainPass string) (PassHash, error) {
+	version, _, _, hastotp, totpsecret, valid := ph.Data()
+	if !valid {
+		return "", errors.New("invalid PassHash")
+	}
+
+	if version == 0 {
+		return HashPasswordV0(newPlainPass)
+	}
+
+	if version == 1 {
+		return HashPasswordV1(newPlainPass)
+	}
+
+	if version == 2 {
+		return HashPasswordV2(newPlainPass)
+	}
+
+	if version == 3 {
+		return HashPasswordV3(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
+	}
+
+	if version == 4 {
+		return HashPasswordV4(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
+	}
+
+	return "", errors.New("unknown version")
+}
+
+func (ph PassHash) String() string {
+	return string(ph)
+}
+
+func HashPassword(plainpass string, totpSecret []byte) (PassHash, error) {
+	return HashPasswordV4(plainpass, totpSecret)
+}
+
+func HashPasswordV4(plainpass string, totpSecret []byte) (PassHash, error) {
+	var strtotp string
+
+	if totpSecret == nil {
+		strtotp = "0"
+	} else {
+		strtotp = hex.EncodeToString(totpSecret)
+	}
+
+	payload, err := bcrypt.GenerateFromPassword([]byte(plainpass), bcrypt.MinCost)
+	if err != nil {
+		return "", err
+	}
+
+	return PassHash(fmt.Sprintf("4|%s|%s", string(payload), strtotp)), nil
+}
+
+func HashPasswordV3(plainpass string, totpSecret []byte) (PassHash, error) {
+	var strtotp string
+
+	if totpSecret == nil {
+		strtotp = "0"
+	} else {
+		strtotp = hex.EncodeToString(totpSecret)
+	}
+
+	seed, err := newSeed()
+	if err != nil {
+		return "", err
+	}
+
+	checksum := hash256Seeded(plainpass, seed)
+
+	return PassHash(fmt.Sprintf("3|%s|%s|%s",
+		base64.RawStdEncoding.EncodeToString(seed),
+		base64.RawStdEncoding.EncodeToString(checksum),
+		strtotp)), nil
+}
+
+func HashPasswordV2(plainpass string) (PassHash, error) {
+	seed, err := newSeed()
+	if err != nil {
+		return "", err
+	}
+
+	checksum := hash256Seeded(plainpass, seed)
+
+	return PassHash(fmt.Sprintf("2|%s|%s", base64.RawStdEncoding.EncodeToString(seed), base64.RawStdEncoding.EncodeToString(checksum))), nil
+}
+
+func HashPasswordV1(plainpass string) (PassHash, error) {
+	return PassHash(fmt.Sprintf("1|%s", base64.RawStdEncoding.EncodeToString(hash256(plainpass)))), nil
+}
+
+func HashPasswordV0(plainpass string) (PassHash, error) {
+	return PassHash(fmt.Sprintf("0|%s", plainpass)), nil
+}
+
+func hash256(s string) []byte {
+	h := sha256.New()
+	h.Write([]byte(s))
+	bs := h.Sum(nil)
+	return bs
+}
+
+func hash256Seeded(s string, seed []byte) []byte {
+	h := sha256.New()
+	h.Write(seed)
+	h.Write([]byte(s))
+	bs := h.Sum(nil)
+	return bs
+}
+
+func newSeed() ([]byte, error) {
+	secret := make([]byte, 32)
+	_, err := rand.Read(secret)
+	if err != nil {
+		return nil, err
+	}
+	return secret, nil
+}

dataext/lruMap.go

@@ -19,38 +19,38 @@ import (
 // There are also a bunch of unit tests to ensure that the cache is always in a consistent state
 //
 
-type LRUMap[TData any] struct {
+type LRUMap[TKey comparable, TData any] struct {
 	maxsize int
 	lock    sync.Mutex
 
-	cache map[string]*cacheNode[TData]
+	cache map[TKey]*cacheNode[TKey, TData]
 
-	lfuHead *cacheNode[TData]
-	lfuTail *cacheNode[TData]
+	lfuHead *cacheNode[TKey, TData]
+	lfuTail *cacheNode[TKey, TData]
 }
 
-type cacheNode[TData any] struct {
-	key    string
+type cacheNode[TKey comparable, TData any] struct {
+	key    TKey
 	data   TData
-	parent *cacheNode[TData]
-	child  *cacheNode[TData]
+	parent *cacheNode[TKey, TData]
+	child  *cacheNode[TKey, TData]
 }
 
-func NewLRUMap[TData any](size int) *LRUMap[TData] {
+func NewLRUMap[TKey comparable, TData any](size int) *LRUMap[TKey, TData] {
 	if size <= 2 && size != 0 {
 		panic("Size must be > 2  (or 0)")
 	}
 
-	return &LRUMap[TData]{
+	return &LRUMap[TKey, TData]{
 		maxsize: size,
 		lock:    sync.Mutex{},
-		cache:   make(map[string]*cacheNode[TData], size+1),
+		cache:   make(map[TKey]*cacheNode[TKey, TData], size+1),
 		lfuHead: nil,
 		lfuTail: nil,
 	}
 }
 
-func (c *LRUMap[TData]) Put(key string, value TData) {
+func (c *LRUMap[TKey, TData]) Put(key TKey, value TData) {
 	if c.maxsize == 0 {
 		return // cache disabled
 	}
@@ -68,7 +68,7 @@ func (c *LRUMap[TData]) Put(key string, value TData) {
 	}
 
 	// key does not exist: insert into map and add to top of LFU
-	node = &cacheNode[TData]{
+	node = &cacheNode[TKey, TData]{
 		key:    key,
 		data:   value,
 		parent: nil,
@@ -93,7 +93,7 @@ func (c *LRUMap[TData]) Put(key string, value TData) {
 	}
 }
 
-func (c *LRUMap[TData]) TryGet(key string) (TData, bool) {
+func (c *LRUMap[TKey, TData]) TryGet(key TKey) (TData, bool) {
 	if c.maxsize == 0 {
 		return *new(TData), false // cache disabled
 	}
@@ -109,7 +109,7 @@ func (c *LRUMap[TData]) TryGet(key string) (TData, bool) {
 	return val.data, ok
 }
 
-func (c *LRUMap[TData]) moveNodeToTop(node *cacheNode[TData]) {
+func (c *LRUMap[TKey, TData]) moveNodeToTop(node *cacheNode[TKey, TData]) {
 	// (only called in critical section !)
 
 	if c.lfuHead == node { // fast case
@@ -142,7 +142,7 @@ func (c *LRUMap[TData]) moveNodeToTop(node *cacheNode[TData]) {
 	}
 }
 
-func (c *LRUMap[TData]) Size() int {
+func (c *LRUMap[TKey, TData]) Size() int {
 	c.lock.Lock()
 	defer c.lock.Unlock()
 	return len(c.cache)

dataext/stack.go

@@ -0,0 +1,116 @@
+package dataext
+
+import (
+	"errors"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"sync"
+)
+
+var ErrEmptyStack = errors.New("stack is empty")
+
+type Stack[T any] struct {
+	lock *sync.Mutex
+	data []T
+}
+
+func NewStack[T any](threadsafe bool, initialCapacity int) *Stack[T] {
+	var lck *sync.Mutex = nil
+	if threadsafe {
+		lck = &sync.Mutex{}
+	}
+	return &Stack[T]{
+		lock: lck,
+		data: make([]T, 0, initialCapacity),
+	}
+}
+
+func (s *Stack[T]) Push(v T) {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	s.data = append(s.data, v)
+}
+
+func (s *Stack[T]) Pop() (T, error) {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	l := len(s.data)
+	if l == 0 {
+		return *new(T), ErrEmptyStack
+	}
+
+	result := s.data[l-1]
+	s.data = s.data[:l-1]
+
+	return result, nil
+}
+
+func (s *Stack[T]) OptPop() *T {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	l := len(s.data)
+	if l == 0 {
+		return nil
+	}
+
+	result := s.data[l-1]
+	s.data = s.data[:l-1]
+
+	return langext.Ptr(result)
+}
+
+func (s *Stack[T]) Peek() (T, error) {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	l := len(s.data)
+
+	if l == 0 {
+		return *new(T), ErrEmptyStack
+	}
+
+	return s.data[l-1], nil
+}
+
+func (s *Stack[T]) OptPeek() *T {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	l := len(s.data)
+
+	if l == 0 {
+		return nil
+	}
+
+	return langext.Ptr(s.data[l-1])
+}
+
+func (s *Stack[T]) Length() int {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	return len(s.data)
+}
+
+func (s *Stack[T]) Empty() bool {
+	if s.lock != nil {
+		s.lock.Lock()
+		defer s.lock.Unlock()
+	}
+
+	return len(s.data) == 0
+}

go.mod

@@ -3,8 +3,11 @@ module gogs.mikescher.com/BlackForestBytes/goext
 go 1.19
 
 require (
-	golang.org/x/sys v0.1.0
-	golang.org/x/term v0.1.0
+	golang.org/x/sys v0.3.0
+	golang.org/x/term v0.3.0
 )
 
-require github.com/jmoiron/sqlx v1.3.5 // indirect
+require (
+	github.com/jmoiron/sqlx v1.3.5 // indirect
+	golang.org/x/crypto v0.4.0 // indirect
+)

go.sum

@@ -3,7 +3,13 @@ github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
+golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
+golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
 golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
+golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw=
 golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.3.0 h1:qoo4akIqOcDME5bhc/NgxUdovd6BSS2uMsVjB56q1xI=
+golang.org/x/term v0.3.0/go.mod h1:q750SLmJuPmVoN1blW3UFBPREJfb1KmY3vwxfr+nFDA=

langext/array.go

@@ -265,6 +265,16 @@ func ArrMap[T1 any, T2 any](arr []T1, conv func(v T1) T2) []T2 {
 	return r
 }
 
+func ArrFilterMap[T1 any, T2 any](arr []T1, filter func(v T1) bool, conv func(v T1) T2) []T2 {
+	r := make([]T2, 0, len(arr))
+	for _, v := range arr {
+		if filter(v) {
+			r = append(r, conv(v))
+		}
+	}
+	return r
+}
+
 func ArrSum[T NumberConstraint](arr []T) T {
 	var r T = 0
 	for _, v := range arr {

langext/bool.go

@@ -15,3 +15,35 @@ func Conditional[T any](v bool, resTrue T, resFalse T) T {
 		return resFalse
 	}
 }
+
+func ConditionalFn00[T any](v bool, resTrue T, resFalse T) T {
+	if v {
+		return resTrue
+	} else {
+		return resFalse
+	}
+}
+
+func ConditionalFn10[T any](v bool, resTrue func() T, resFalse T) T {
+	if v {
+		return resTrue()
+	} else {
+		return resFalse
+	}
+}
+
+func ConditionalFn01[T any](v bool, resTrue T, resFalse func() T) T {
+	if v {
+		return resTrue
+	} else {
+		return resFalse()
+	}
+}
+
+func ConditionalFn11[T any](v bool, resTrue func() T, resFalse func() T) T {
+	if v {
+		return resTrue()
+	} else {
+		return resFalse()
+	}
+}

langext/maps.go

@@ -7,3 +7,11 @@ func MapKeyArr[T comparable, V any](v map[T]V) []T {
 	}
 	return result
 }
+
+func ArrToMap[T comparable, V any](a []V, keyfunc func(V) T) map[T]V {
+	result := make(map[T]V, len(a))
+	for _, v := range a {
+		result[keyfunc(v)] = v
+	}
+	return result
+}

langext/pointer.go

@@ -34,3 +34,7 @@ func IsNil(i interface{}) bool {
 	}
 	return false
 }
+
+func PtrEquals[T comparable](v1 *T, v2 *T) bool {
+	return (v1 == nil && v2 == nil) || (v1 != nil && v2 != nil && *v1 == *v2)
+}

langext/sort.go

@@ -37,3 +37,21 @@ func IsSliceSorted[T any](arr []T, less func(v1, v2 T) bool) bool {
 		return less(arr[i1], arr[i2])
 	})
 }
+
+func SortBy[TElem any, TSel OrderedConstraint](arr []TElem, selector func(v TElem) TSel) {
+	sort.Slice(arr, func(i1, i2 int) bool {
+		return selector(arr[i1]) < selector(arr[i2])
+	})
+}
+
+func SortByStable[TElem any, TSel OrderedConstraint](arr []TElem, selector func(v TElem) TSel) {
+	sort.SliceStable(arr, func(i1, i2 int) bool {
+		return selector(arr[i1]) < selector(arr[i2])
+	})
+}
+
+func IsSortedBy[TElem any, TSel OrderedConstraint](arr []TElem, selector func(v TElem) TSel) {
+	sort.SliceStable(arr, func(i1, i2 int) bool {
+		return selector(arr[i1]) < selector(arr[i2])
+	})
+}

rext/wrapper.go

@@ -0,0 +1,130 @@
+package rext
+
+import "regexp"
+
+type Regex interface {
+	IsMatch(haystack string) bool
+	MatchFirst(haystack string) (RegexMatch, bool)
+	MatchAll(haystack string) []RegexMatch
+	ReplaceAll(haystack string, repl string, literal bool) string
+	ReplaceAllFunc(haystack string, repl func(string) string) string
+	RemoveAll(haystack string) string
+	GroupCount() int
+}
+
+type regexWrapper struct {
+	rex      *regexp.Regexp
+	subnames []string
+}
+
+type RegexMatch struct {
+	haystack        string
+	submatchesIndex []int
+	subnames        []string
+}
+
+type RegexMatchGroup struct {
+	haystack string
+	start    int
+	end      int
+}
+
+func W(rex *regexp.Regexp) Regex {
+	return &regexWrapper{rex: rex, subnames: rex.SubexpNames()}
+}
+
+// ---------------------------------------------------------------------------------------------------------------------
+
+func (w *regexWrapper) IsMatch(haystack string) bool {
+	return w.rex.MatchString(haystack)
+}
+
+func (w *regexWrapper) MatchFirst(haystack string) (RegexMatch, bool) {
+	res := w.rex.FindStringSubmatchIndex(haystack)
+	if res == nil {
+		return RegexMatch{}, false
+	}
+
+	return RegexMatch{haystack: haystack, submatchesIndex: res, subnames: w.subnames}, true
+}
+
+func (w *regexWrapper) MatchAll(haystack string) []RegexMatch {
+	resarr := w.rex.FindAllStringSubmatchIndex(haystack, -1)
+
+	matches := make([]RegexMatch, 0, len(resarr))
+	for _, res := range resarr {
+		matches = append(matches, RegexMatch{haystack: haystack, submatchesIndex: res, subnames: w.subnames})
+	}
+
+	return matches
+}
+
+func (w *regexWrapper) ReplaceAll(haystack string, repl string, literal bool) string {
+	if literal {
+		// do not expand placeholder aka $1, $2, ...
+		return w.rex.ReplaceAllLiteralString(haystack, repl)
+	} else {
+		return w.rex.ReplaceAllString(haystack, repl)
+	}
+}
+
+func (w *regexWrapper) ReplaceAllFunc(haystack string, repl func(string) string) string {
+	return w.rex.ReplaceAllStringFunc(haystack, repl)
+}
+
+func (w *regexWrapper) RemoveAll(haystack string) string {
+	return w.rex.ReplaceAllLiteralString(haystack, "")
+}
+
+// GroupCount returns the amount of groups in this match, does not count group-0 (whole match)
+func (w *regexWrapper) GroupCount() int {
+	return len(w.subnames) - 1
+}
+
+// ---------------------------------------------------------------------------------------------------------------------
+
+func (m RegexMatch) FullMatch() RegexMatchGroup {
+	return RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[0], end: m.submatchesIndex[1]}
+}
+
+// GroupCount returns the amount of groups in this match, does not count group-0 (whole match)
+func (m RegexMatch) GroupCount() int {
+	return len(m.subnames) - 1
+}
+
+// GroupByIndex returns the value of a matched group (group 0 == whole match)
+func (m RegexMatch) GroupByIndex(idx int) RegexMatchGroup {
+	return RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[idx*2], end: m.submatchesIndex[idx*2+1]}
+}
+
+// GroupByName returns the value of a matched group (group 0 == whole match)
+func (m RegexMatch) GroupByName(name string) RegexMatchGroup {
+	for idx, subname := range m.subnames {
+		if subname == name {
+			return RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[idx*2], end: m.submatchesIndex[idx*2+1]}
+		}
+	}
+	panic("failed to find regex-group by name")
+}
+
+// ---------------------------------------------------------------------------------------------------------------------
+
+func (g RegexMatchGroup) Value() string {
+	return g.haystack[g.start:g.end]
+}
+
+func (g RegexMatchGroup) Start() int {
+	return g.start
+}
+
+func (g RegexMatchGroup) End() int {
+	return g.end
+}
+
+func (g RegexMatchGroup) Range() (int, int) {
+	return g.start, g.end
+}
+
+func (g RegexMatchGroup) Length() int {
+	return g.end - g.start
+}

rfctime/interface.go

@@ -0,0 +1,45 @@
+package rfctime
+
+import "time"
+
+type RFCTime interface {
+	Time() time.Time
+	Serialize() string
+
+	UnmarshalJSON(bytes []byte) error
+	MarshalJSON() ([]byte, error)
+
+	MarshalBinary() ([]byte, error)
+	UnmarshalBinary(data []byte) error
+
+	GobEncode() ([]byte, error)
+	GobDecode(data []byte) error
+
+	MarshalText() ([]byte, error)
+	UnmarshalText(data []byte) error
+
+	After(u RFCTime) bool
+	Before(u RFCTime) bool
+	Equal(u RFCTime) bool
+	IsZero() bool
+	Date() (year int, month time.Month, day int)
+	Year() int
+	Month() time.Month
+	Day() int
+	Weekday() time.Weekday
+	ISOWeek() (year, week int)
+	Clock() (hour, min, sec int)
+	Hour() int
+	Minute() int
+	Second() int
+	Nanosecond() int
+	YearDay() int
+	Sub(u RFCTime) time.Duration
+	Unix() int64
+	UnixMilli() int64
+	UnixMicro() int64
+	UnixNano() int64
+	Format(layout string) string
+	GoString() string
+	String() string
+}

rfctime/rfc3339.go

@@ -0,0 +1,182 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type RFC3339Time time.Time
+
+func (t RFC3339Time) Time() time.Time {
+	return time.Time(t)
+}
+
+func (t RFC3339Time) MarshalBinary() ([]byte, error) {
+	return (time.Time)(t).MarshalBinary()
+}
+
+func (t *RFC3339Time) UnmarshalBinary(data []byte) error {
+	return (*time.Time)(t).UnmarshalBinary(data)
+}
+
+func (t RFC3339Time) GobEncode() ([]byte, error) {
+	return (time.Time)(t).GobEncode()
+}
+
+func (t *RFC3339Time) GobDecode(data []byte) error {
+	return (*time.Time)(t).GobDecode(data)
+}
+
+func (t *RFC3339Time) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := time.Parse(t.FormatStr(), str)
+	if err != nil {
+		return err
+	}
+	*t = RFC3339Time(t0)
+	return nil
+}
+
+func (t RFC3339Time) MarshalJSON() ([]byte, error) {
+	str := t.Time().Format(t.FormatStr())
+	return json.Marshal(str)
+}
+
+func (t RFC3339Time) MarshalText() ([]byte, error) {
+	b := make([]byte, 0, len(t.FormatStr()))
+	return t.Time().AppendFormat(b, t.FormatStr()), nil
+}
+
+func (t *RFC3339Time) UnmarshalText(data []byte) error {
+	var err error
+	v, err := time.Parse(t.FormatStr(), string(data))
+	if err != nil {
+		return err
+	}
+	tt := RFC3339Time(v)
+	*t = tt
+	return nil
+}
+
+func (t RFC3339Time) Serialize() string {
+	return t.Time().Format(t.FormatStr())
+}
+
+func (t RFC3339Time) FormatStr() string {
+	return time.RFC3339
+}
+
+func (t RFC3339Time) After(u RFCTime) bool {
+	return t.Time().After(u.Time())
+}
+
+func (t RFC3339Time) Before(u RFCTime) bool {
+	return t.Time().Before(u.Time())
+}
+
+func (t RFC3339Time) Equal(u RFCTime) bool {
+	return t.Time().Equal(u.Time())
+}
+
+func (t RFC3339Time) IsZero() bool {
+	return t.Time().IsZero()
+}
+
+func (t RFC3339Time) Date() (year int, month time.Month, day int) {
+	return t.Time().Date()
+}
+
+func (t RFC3339Time) Year() int {
+	return t.Time().Year()
+}
+
+func (t RFC3339Time) Month() time.Month {
+	return t.Time().Month()
+}
+
+func (t RFC3339Time) Day() int {
+	return t.Time().Day()
+}
+
+func (t RFC3339Time) Weekday() time.Weekday {
+	return t.Time().Weekday()
+}
+
+func (t RFC3339Time) ISOWeek() (year, week int) {
+	return t.Time().ISOWeek()
+}
+
+func (t RFC3339Time) Clock() (hour, min, sec int) {
+	return t.Time().Clock()
+}
+
+func (t RFC3339Time) Hour() int {
+	return t.Time().Hour()
+}
+
+func (t RFC3339Time) Minute() int {
+	return t.Time().Minute()
+}
+
+func (t RFC3339Time) Second() int {
+	return t.Time().Second()
+}
+
+func (t RFC3339Time) Nanosecond() int {
+	return t.Time().Nanosecond()
+}
+
+func (t RFC3339Time) YearDay() int {
+	return t.Time().YearDay()
+}
+
+func (t RFC3339Time) Add(d time.Duration) RFC3339Time {
+	return RFC3339Time(t.Time().Add(d))
+}
+
+func (t RFC3339Time) Sub(u RFCTime) time.Duration {
+	return t.Time().Sub(u.Time())
+}
+
+func (t RFC3339Time) AddDate(years int, months int, days int) RFC3339Time {
+	return RFC3339Time(t.Time().AddDate(years, months, days))
+}
+
+func (t RFC3339Time) Unix() int64 {
+	return t.Time().Unix()
+}
+
+func (t RFC3339Time) UnixMilli() int64 {
+	return t.Time().UnixMilli()
+}
+
+func (t RFC3339Time) UnixMicro() int64 {
+	return t.Time().UnixMicro()
+}
+
+func (t RFC3339Time) UnixNano() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t RFC3339Time) Format(layout string) string {
+	return t.Time().Format(layout)
+}
+
+func (t RFC3339Time) GoString() string {
+	return t.Time().GoString()
+}
+
+func (t RFC3339Time) String() string {
+	return t.Time().String()
+}
+
+func NewRFC3339(t time.Time) RFC3339Time {
+	return RFC3339Time(t)
+}
+
+func NowRFC3339() RFC3339Time {
+	return RFC3339Time(time.Now())
+}

rfctime/rfc3339Nano.go

@@ -0,0 +1,182 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type RFC3339NanoTime time.Time
+
+func (t RFC3339NanoTime) Time() time.Time {
+	return time.Time(t)
+}
+
+func (t RFC3339NanoTime) MarshalBinary() ([]byte, error) {
+	return (time.Time)(t).MarshalBinary()
+}
+
+func (t *RFC3339NanoTime) UnmarshalBinary(data []byte) error {
+	return (*time.Time)(t).UnmarshalBinary(data)
+}
+
+func (t RFC3339NanoTime) GobEncode() ([]byte, error) {
+	return (time.Time)(t).GobEncode()
+}
+
+func (t *RFC3339NanoTime) GobDecode(data []byte) error {
+	return (*time.Time)(t).GobDecode(data)
+}
+
+func (t *RFC3339NanoTime) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := time.Parse(t.FormatStr(), str)
+	if err != nil {
+		return err
+	}
+	*t = RFC3339NanoTime(t0)
+	return nil
+}
+
+func (t RFC3339NanoTime) MarshalJSON() ([]byte, error) {
+	str := t.Time().Format(t.FormatStr())
+	return json.Marshal(str)
+}
+
+func (t RFC3339NanoTime) MarshalText() ([]byte, error) {
+	b := make([]byte, 0, len(t.FormatStr()))
+	return t.Time().AppendFormat(b, t.FormatStr()), nil
+}
+
+func (t *RFC3339NanoTime) UnmarshalText(data []byte) error {
+	var err error
+	v, err := time.Parse(t.FormatStr(), string(data))
+	if err != nil {
+		return err
+	}
+	tt := RFC3339NanoTime(v)
+	*t = tt
+	return nil
+}
+
+func (t RFC3339NanoTime) Serialize() string {
+	return t.Time().Format(t.FormatStr())
+}
+
+func (t RFC3339NanoTime) FormatStr() string {
+	return time.RFC3339Nano
+}
+
+func (t RFC3339NanoTime) After(u RFCTime) bool {
+	return t.Time().After(u.Time())
+}
+
+func (t RFC3339NanoTime) Before(u RFCTime) bool {
+	return t.Time().Before(u.Time())
+}
+
+func (t RFC3339NanoTime) Equal(u RFCTime) bool {
+	return t.Time().Equal(u.Time())
+}
+
+func (t RFC3339NanoTime) IsZero() bool {
+	return t.Time().IsZero()
+}
+
+func (t RFC3339NanoTime) Date() (year int, month time.Month, day int) {
+	return t.Time().Date()
+}
+
+func (t RFC3339NanoTime) Year() int {
+	return t.Time().Year()
+}
+
+func (t RFC3339NanoTime) Month() time.Month {
+	return t.Time().Month()
+}
+
+func (t RFC3339NanoTime) Day() int {
+	return t.Time().Day()
+}
+
+func (t RFC3339NanoTime) Weekday() time.Weekday {
+	return t.Time().Weekday()
+}
+
+func (t RFC3339NanoTime) ISOWeek() (year, week int) {
+	return t.Time().ISOWeek()
+}
+
+func (t RFC3339NanoTime) Clock() (hour, min, sec int) {
+	return t.Time().Clock()
+}
+
+func (t RFC3339NanoTime) Hour() int {
+	return t.Time().Hour()
+}
+
+func (t RFC3339NanoTime) Minute() int {
+	return t.Time().Minute()
+}
+
+func (t RFC3339NanoTime) Second() int {
+	return t.Time().Second()
+}
+
+func (t RFC3339NanoTime) Nanosecond() int {
+	return t.Time().Nanosecond()
+}
+
+func (t RFC3339NanoTime) YearDay() int {
+	return t.Time().YearDay()
+}
+
+func (t RFC3339NanoTime) Add(d time.Duration) RFC3339NanoTime {
+	return RFC3339NanoTime(t.Time().Add(d))
+}
+
+func (t RFC3339NanoTime) Sub(u RFCTime) time.Duration {
+	return t.Time().Sub(u.Time())
+}
+
+func (t RFC3339NanoTime) AddDate(years int, months int, days int) RFC3339NanoTime {
+	return RFC3339NanoTime(t.Time().AddDate(years, months, days))
+}
+
+func (t RFC3339NanoTime) Unix() int64 {
+	return t.Time().Unix()
+}
+
+func (t RFC3339NanoTime) UnixMilli() int64 {
+	return t.Time().UnixMilli()
+}
+
+func (t RFC3339NanoTime) UnixMicro() int64 {
+	return t.Time().UnixMicro()
+}
+
+func (t RFC3339NanoTime) UnixNano() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t RFC3339NanoTime) Format(layout string) string {
+	return t.Time().Format(layout)
+}
+
+func (t RFC3339NanoTime) GoString() string {
+	return t.Time().GoString()
+}
+
+func (t RFC3339NanoTime) String() string {
+	return t.Time().String()
+}
+
+func NewRFC3339Nano(t time.Time) RFC3339NanoTime {
+	return RFC3339NanoTime(t)
+}
+
+func NowRFC3339Nano() RFC3339NanoTime {
+	return RFC3339NanoTime(time.Now())
+}

rfctime/rfc3339Nano_test.go

@@ -0,0 +1,51 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+)
+
+func TestRoundtrip(t *testing.T) {
+
+	type Wrap struct {
+		Value RFC3339NanoTime `json:"v"`
+	}
+
+	val1 := NewRFC3339Nano(time.Now())
+	w1 := Wrap{val1}
+
+	jstr1, err := json.Marshal(w1)
+	if err != nil {
+		panic(err)
+	}
+
+	if string(jstr1) != "{\"v\":\"2023-01-29T20:32:36.149692117+01:00\"}" {
+		t.Errorf("repr differs")
+	}
+
+	w2 := Wrap{}
+
+	err = json.Unmarshal(jstr1, &w2)
+	if err != nil {
+		panic(err)
+	}
+
+	jstr2, err := json.Marshal(w2)
+	if err != nil {
+		panic(err)
+	}
+
+	assertEqual(t, string(jstr1), string(jstr2))
+
+	if !w1.Value.Equal(&w2.Value) {
+		t.Errorf("time differs")
+	}
+
+}
+
+func assertEqual(t *testing.T, actual string, expected string) {
+	if actual != expected {
+		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)
+	}
+}

rfctime/unix.go

@@ -0,0 +1,176 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"strconv"
+	"time"
+)
+
+type UnixTime time.Time
+
+func (t UnixTime) Time() time.Time {
+	return time.Time(t)
+}
+
+func (t UnixTime) MarshalBinary() ([]byte, error) {
+	return (time.Time)(t).MarshalBinary()
+}
+
+func (t *UnixTime) UnmarshalBinary(data []byte) error {
+	return (*time.Time)(t).UnmarshalBinary(data)
+}
+
+func (t UnixTime) GobEncode() ([]byte, error) {
+	return (time.Time)(t).GobEncode()
+}
+
+func (t *UnixTime) GobDecode(data []byte) error {
+	return (*time.Time)(t).GobDecode(data)
+}
+
+func (t *UnixTime) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := strconv.ParseInt(str, 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixTime(time.Unix(t0, 0))
+	return nil
+}
+
+func (t UnixTime) MarshalJSON() ([]byte, error) {
+	str := strconv.FormatInt(t.Time().Unix(), 10)
+	return json.Marshal(str)
+}
+
+func (t UnixTime) MarshalText() ([]byte, error) {
+	return []byte(strconv.FormatInt(t.Time().Unix(), 10)), nil
+}
+
+func (t *UnixTime) UnmarshalText(data []byte) error {
+	t0, err := strconv.ParseInt(string(data), 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixTime(time.Unix(t0, 0))
+	return nil
+}
+
+func (t UnixTime) Serialize() string {
+	return strconv.FormatInt(t.Time().Unix(), 10)
+}
+
+func (t UnixTime) After(u RFCTime) bool {
+	return t.Time().After(u.Time())
+}
+
+func (t UnixTime) Before(u RFCTime) bool {
+	return t.Time().Before(u.Time())
+}
+
+func (t UnixTime) Equal(u RFCTime) bool {
+	return t.Time().Equal(u.Time())
+}
+
+func (t UnixTime) IsZero() bool {
+	return t.Time().IsZero()
+}
+
+func (t UnixTime) Date() (year int, month time.Month, day int) {
+	return t.Time().Date()
+}
+
+func (t UnixTime) Year() int {
+	return t.Time().Year()
+}
+
+func (t UnixTime) Month() time.Month {
+	return t.Time().Month()
+}
+
+func (t UnixTime) Day() int {
+	return t.Time().Day()
+}
+
+func (t UnixTime) Weekday() time.Weekday {
+	return t.Time().Weekday()
+}
+
+func (t UnixTime) ISOWeek() (year, week int) {
+	return t.Time().ISOWeek()
+}
+
+func (t UnixTime) Clock() (hour, min, sec int) {
+	return t.Time().Clock()
+}
+
+func (t UnixTime) Hour() int {
+	return t.Time().Hour()
+}
+
+func (t UnixTime) Minute() int {
+	return t.Time().Minute()
+}
+
+func (t UnixTime) Second() int {
+	return t.Time().Second()
+}
+
+func (t UnixTime) Nanosecond() int {
+	return t.Time().Nanosecond()
+}
+
+func (t UnixTime) YearDay() int {
+	return t.Time().YearDay()
+}
+
+func (t UnixTime) Add(d time.Duration) UnixTime {
+	return UnixTime(t.Time().Add(d))
+}
+
+func (t UnixTime) Sub(u RFCTime) time.Duration {
+	return t.Time().Sub(u.Time())
+}
+
+func (t UnixTime) AddDate(years int, months int, days int) UnixTime {
+	return UnixTime(t.Time().AddDate(years, months, days))
+}
+
+func (t UnixTime) Unix() int64 {
+	return t.Time().Unix()
+}
+
+func (t UnixTime) UnixMilli() int64 {
+	return t.Time().UnixMilli()
+}
+
+func (t UnixTime) UnixMicro() int64 {
+	return t.Time().UnixMicro()
+}
+
+func (t UnixTime) UnixNano() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t UnixTime) Format(layout string) string {
+	return t.Time().Format(layout)
+}
+
+func (t UnixTime) GoString() string {
+	return t.Time().GoString()
+}
+
+func (t UnixTime) String() string {
+	return t.Time().String()
+}
+
+func NewUnix(t time.Time) UnixTime {
+	return UnixTime(t)
+}
+
+func NowUnix() UnixTime {
+	return UnixTime(time.Now())
+}

rfctime/unixMilli.go

@@ -0,0 +1,176 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"strconv"
+	"time"
+)
+
+type UnixMilliTime time.Time
+
+func (t UnixMilliTime) Time() time.Time {
+	return time.Time(t)
+}
+
+func (t UnixMilliTime) MarshalBinary() ([]byte, error) {
+	return (time.Time)(t).MarshalBinary()
+}
+
+func (t *UnixMilliTime) UnmarshalBinary(data []byte) error {
+	return (*time.Time)(t).UnmarshalBinary(data)
+}
+
+func (t UnixMilliTime) GobEncode() ([]byte, error) {
+	return (time.Time)(t).GobEncode()
+}
+
+func (t *UnixMilliTime) GobDecode(data []byte) error {
+	return (*time.Time)(t).GobDecode(data)
+}
+
+func (t *UnixMilliTime) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := strconv.ParseInt(str, 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixMilliTime(time.UnixMilli(t0))
+	return nil
+}
+
+func (t UnixMilliTime) MarshalJSON() ([]byte, error) {
+	str := strconv.FormatInt(t.Time().UnixMilli(), 10)
+	return json.Marshal(str)
+}
+
+func (t UnixMilliTime) MarshalText() ([]byte, error) {
+	return []byte(strconv.FormatInt(t.Time().UnixMilli(), 10)), nil
+}
+
+func (t *UnixMilliTime) UnmarshalText(data []byte) error {
+	t0, err := strconv.ParseInt(string(data), 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixMilliTime(time.UnixMilli(t0))
+	return nil
+}
+
+func (t UnixMilliTime) Serialize() string {
+	return strconv.FormatInt(t.Time().UnixMilli(), 10)
+}
+
+func (t UnixMilliTime) After(u RFCTime) bool {
+	return t.Time().After(u.Time())
+}
+
+func (t UnixMilliTime) Before(u RFCTime) bool {
+	return t.Time().Before(u.Time())
+}
+
+func (t UnixMilliTime) Equal(u RFCTime) bool {
+	return t.Time().Equal(u.Time())
+}
+
+func (t UnixMilliTime) IsZero() bool {
+	return t.Time().IsZero()
+}
+
+func (t UnixMilliTime) Date() (year int, month time.Month, day int) {
+	return t.Time().Date()
+}
+
+func (t UnixMilliTime) Year() int {
+	return t.Time().Year()
+}
+
+func (t UnixMilliTime) Month() time.Month {
+	return t.Time().Month()
+}
+
+func (t UnixMilliTime) Day() int {
+	return t.Time().Day()
+}
+
+func (t UnixMilliTime) Weekday() time.Weekday {
+	return t.Time().Weekday()
+}
+
+func (t UnixMilliTime) ISOWeek() (year, week int) {
+	return t.Time().ISOWeek()
+}
+
+func (t UnixMilliTime) Clock() (hour, min, sec int) {
+	return t.Time().Clock()
+}
+
+func (t UnixMilliTime) Hour() int {
+	return t.Time().Hour()
+}
+
+func (t UnixMilliTime) Minute() int {
+	return t.Time().Minute()
+}
+
+func (t UnixMilliTime) Second() int {
+	return t.Time().Second()
+}
+
+func (t UnixMilliTime) Nanosecond() int {
+	return t.Time().Nanosecond()
+}
+
+func (t UnixMilliTime) YearDay() int {
+	return t.Time().YearDay()
+}
+
+func (t UnixMilliTime) Add(d time.Duration) UnixMilliTime {
+	return UnixMilliTime(t.Time().Add(d))
+}
+
+func (t UnixMilliTime) Sub(u RFCTime) time.Duration {
+	return t.Time().Sub(u.Time())
+}
+
+func (t UnixMilliTime) AddDate(years int, months int, days int) UnixMilliTime {
+	return UnixMilliTime(t.Time().AddDate(years, months, days))
+}
+
+func (t UnixMilliTime) Unix() int64 {
+	return t.Time().Unix()
+}
+
+func (t UnixMilliTime) UnixMilli() int64 {
+	return t.Time().UnixMilli()
+}
+
+func (t UnixMilliTime) UnixMicro() int64 {
+	return t.Time().UnixMicro()
+}
+
+func (t UnixMilliTime) UnixNano() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t UnixMilliTime) Format(layout string) string {
+	return t.Time().Format(layout)
+}
+
+func (t UnixMilliTime) GoString() string {
+	return t.Time().GoString()
+}
+
+func (t UnixMilliTime) String() string {
+	return t.Time().String()
+}
+
+func NewUnixMilli(t time.Time) UnixMilliTime {
+	return UnixMilliTime(t)
+}
+
+func NowUnixMilli() UnixMilliTime {
+	return UnixMilliTime(time.Now())
+}

rfctime/unixNano.go

@@ -0,0 +1,176 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"strconv"
+	"time"
+)
+
+type UnixNanoTime time.Time
+
+func (t UnixNanoTime) Time() time.Time {
+	return time.Time(t)
+}
+
+func (t UnixNanoTime) MarshalBinary() ([]byte, error) {
+	return (time.Time)(t).MarshalBinary()
+}
+
+func (t *UnixNanoTime) UnmarshalBinary(data []byte) error {
+	return (*time.Time)(t).UnmarshalBinary(data)
+}
+
+func (t UnixNanoTime) GobEncode() ([]byte, error) {
+	return (time.Time)(t).GobEncode()
+}
+
+func (t *UnixNanoTime) GobDecode(data []byte) error {
+	return (*time.Time)(t).GobDecode(data)
+}
+
+func (t *UnixNanoTime) UnmarshalJSON(data []byte) error {
+	str := ""
+	if err := json.Unmarshal(data, &str); err != nil {
+		return err
+	}
+	t0, err := strconv.ParseInt(str, 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixNanoTime(time.Unix(0, t0))
+	return nil
+}
+
+func (t UnixNanoTime) MarshalJSON() ([]byte, error) {
+	str := strconv.FormatInt(t.Time().UnixNano(), 10)
+	return json.Marshal(str)
+}
+
+func (t UnixNanoTime) MarshalText() ([]byte, error) {
+	return []byte(strconv.FormatInt(t.Time().UnixNano(), 10)), nil
+}
+
+func (t *UnixNanoTime) UnmarshalText(data []byte) error {
+	t0, err := strconv.ParseInt(string(data), 10, 64)
+	if err != nil {
+		return err
+	}
+	*t = UnixNanoTime(time.Unix(0, t0))
+	return nil
+}
+
+func (t UnixNanoTime) Serialize() string {
+	return strconv.FormatInt(t.Time().UnixNano(), 10)
+}
+
+func (t UnixNanoTime) After(u RFCTime) bool {
+	return t.Time().After(u.Time())
+}
+
+func (t UnixNanoTime) Before(u RFCTime) bool {
+	return t.Time().Before(u.Time())
+}
+
+func (t UnixNanoTime) Equal(u RFCTime) bool {
+	return t.Time().Equal(u.Time())
+}
+
+func (t UnixNanoTime) IsZero() bool {
+	return t.Time().IsZero()
+}
+
+func (t UnixNanoTime) Date() (year int, month time.Month, day int) {
+	return t.Time().Date()
+}
+
+func (t UnixNanoTime) Year() int {
+	return t.Time().Year()
+}
+
+func (t UnixNanoTime) Month() time.Month {
+	return t.Time().Month()
+}
+
+func (t UnixNanoTime) Day() int {
+	return t.Time().Day()
+}
+
+func (t UnixNanoTime) Weekday() time.Weekday {
+	return t.Time().Weekday()
+}
+
+func (t UnixNanoTime) ISOWeek() (year, week int) {
+	return t.Time().ISOWeek()
+}
+
+func (t UnixNanoTime) Clock() (hour, min, sec int) {
+	return t.Time().Clock()
+}
+
+func (t UnixNanoTime) Hour() int {
+	return t.Time().Hour()
+}
+
+func (t UnixNanoTime) Minute() int {
+	return t.Time().Minute()
+}
+
+func (t UnixNanoTime) Second() int {
+	return t.Time().Second()
+}
+
+func (t UnixNanoTime) Nanosecond() int {
+	return t.Time().Nanosecond()
+}
+
+func (t UnixNanoTime) YearDay() int {
+	return t.Time().YearDay()
+}
+
+func (t UnixNanoTime) Add(d time.Duration) UnixNanoTime {
+	return UnixNanoTime(t.Time().Add(d))
+}
+
+func (t UnixNanoTime) Sub(u RFCTime) time.Duration {
+	return t.Time().Sub(u.Time())
+}
+
+func (t UnixNanoTime) AddDate(years int, months int, days int) UnixNanoTime {
+	return UnixNanoTime(t.Time().AddDate(years, months, days))
+}
+
+func (t UnixNanoTime) Unix() int64 {
+	return t.Time().Unix()
+}
+
+func (t UnixNanoTime) UnixMilli() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t UnixNanoTime) UnixMicro() int64 {
+	return t.Time().UnixMicro()
+}
+
+func (t UnixNanoTime) UnixNano() int64 {
+	return t.Time().UnixNano()
+}
+
+func (t UnixNanoTime) Format(layout string) string {
+	return t.Time().Format(layout)
+}
+
+func (t UnixNanoTime) GoString() string {
+	return t.Time().GoString()
+}
+
+func (t UnixNanoTime) String() string {
+	return t.Time().String()
+}
+
+func NewUnixNano(t time.Time) UnixNanoTime {
+	return UnixNanoTime(t)
+}
+
+func NowUnixNano() UnixNanoTime {
+	return UnixNanoTime(time.Now())
+}

sq/params.go

@@ -1,3 +1,13 @@
 package sq
 
 type PP map[string]any
+
+func Join(pps ...PP) PP {
+	r := PP{}
+	for _, add := range pps {
+		for k, v := range add {
+			r[k] = v
+		}
+	}
+	return r
+}

sq/scanner.go

@@ -50,7 +50,6 @@ func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanS
 				return *new(TData), err
 			}
 		} else if mode == SModeExtended {
-			var data TData
 			err := strscan.StructScanExt(&data)
 			if err != nil {
 				return *new(TData), err

sq/structscanner.go

@@ -51,7 +51,7 @@ func (r *StructScanner) Start(dest any) error {
 	return nil
 }
 
-// StructScan forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
+// StructScanExt forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
 // does also wok with nullabel structs (from LEFT JOIN's)
 func (r *StructScanner) StructScanExt(dest any) error {
 	v := reflect.ValueOf(dest)
@@ -113,7 +113,7 @@ func (r *StructScanner) StructScanExt(dest any) error {
 
 				if _, ok := forcenulled[k]; !ok {
 					f := reflectx.FieldByIndexes(v, traversal[0:i])
-					f.Set(reflect.New(f.Type().Elem())) // set to nil
+					f.Set(reflect.Zero(f.Type())) // set to nil
 					forcenulled[k] = true
 				}
 
@@ -138,7 +138,7 @@ func (r *StructScanner) StructScanExt(dest any) error {
 				return errors.New(fmt.Sprintf("Cannot set field %v to NULL value from column '%s' (type: %s)", traversal, r.columns[i], f.Type().String()))
 			}
 
-			f.Set(reflect.New(f.Type().Elem())) // set to nil
+			f.Set(reflect.Zero(f.Type())) // set to nil
 		} else {
 			f.Set(val3)
 		}
@@ -148,7 +148,7 @@ func (r *StructScanner) StructScanExt(dest any) error {
 	return r.rows.Err()
 }
 
-// StructScan forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
+// StructScanBase forked from github.com/jmoiron/sqlx@v1.3.5/sqlx.go
 // without (relevant) changes
 func (r *StructScanner) StructScanBase(dest any) error {
 	v := reflect.ValueOf(dest)

syncext/atomic.go

@@ -2,58 +2,50 @@ package syncext
 
 import (
 	"context"
-	"sync/atomic"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"sync"
 	"time"
 )
 
 type AtomicBool struct {
-	v      int32
-	waiter chan bool // unbuffered
+	v        bool
+	listener map[string]chan bool
+	lock     sync.Mutex
 }
 
 func NewAtomicBool(value bool) *AtomicBool {
-	if value {
-		return &AtomicBool{v: 1, waiter: make(chan bool)}
-	} else {
-		return &AtomicBool{v: 0, waiter: make(chan bool)}
+	return &AtomicBool{
+		v:        value,
+		listener: make(map[string]chan bool),
+		lock:     sync.Mutex{},
 	}
 }
 
 func (a *AtomicBool) Get() bool {
-	return atomic.LoadInt32(&a.v) == 1
+	a.lock.Lock()
+	defer a.lock.Unlock()
+	return a.v
 }
 
 func (a *AtomicBool) Set(value bool) {
-	if value {
-		atomic.StoreInt32(&a.v, 1)
-	} else {
-		atomic.StoreInt32(&a.v, 0)
-	}
+	a.lock.Lock()
+	defer a.lock.Unlock()
 
+	a.v = value
+
+	for k, v := range a.listener {
 		select {
-	case a.waiter <- value:
+		case v <- value:
 			// message sent
 		default:
 			// no receiver on channel
+			delete(a.listener, k)
+		}
 	}
 }
 
 func (a *AtomicBool) Wait(waitFor bool) {
-	if a.Get() == waitFor {
-		return
-	}
-
-	for {
-		if v, ok := ReadChannelWithTimeout(a.waiter, 128*time.Millisecond); ok {
-			if v == waitFor {
-				return
-			}
-		} else {
-			if a.Get() == waitFor {
-				return
-			}
-		}
-	}
+	_ = a.WaitWithContext(context.Background(), waitFor)
 }
 
 func (a *AtomicBool) WaitWithTimeout(timeout time.Duration, waitFor bool) error {
@@ -71,12 +63,25 @@ func (a *AtomicBool) WaitWithContext(ctx context.Context, waitFor bool) error {
 		return nil
 	}
 
+	uuid, _ := langext.NewHexUUID()
+
+	waitchan := make(chan bool)
+
+	a.lock.Lock()
+	a.listener[uuid] = waitchan
+	a.lock.Unlock()
+	defer func() {
+		a.lock.Lock()
+		delete(a.listener, uuid)
+		a.lock.Unlock()
+	}()
+
 	for {
 		if err := ctx.Err(); err != nil {
 			return err
 		}
 
-		timeOut := 128 * time.Millisecond
+		timeOut := 1024 * time.Millisecond
 
 		if dl, ok := ctx.Deadline(); ok {
 			timeOutMax := dl.Sub(time.Now())
@@ -87,7 +92,7 @@ func (a *AtomicBool) WaitWithContext(ctx context.Context, waitFor bool) error {
 			}
 		}
 
-		if v, ok := ReadChannelWithTimeout(a.waiter, timeOut); ok {
+		if v, ok := ReadChannelWithTimeout(waitchan, timeOut); ok {
 			if v == waitFor {
 				return nil
 			}