v0.0.98

_data/version.sh

@@ -7,6 +7,22 @@ set -o pipefail  # Return value of a pipeline is the value of the last (rightmos
 IFS=$'\n\t'      # Set $IFS to only newline and tab.
 
 
+function black() { echo -e "\x1B[30m $1 \x1B[0m"; }
+function red()   { echo -e "\x1B[31m $1 \x1B[0m"; }
+function green() { echo -e "\x1B[32m $1 \x1B[0m"; }
+function yellow(){ echo -e "\x1B[33m $1 \x1B[0m"; }
+function blue()  { echo -e "\x1B[34m $1 \x1B[0m"; }
+function purple(){ echo -e "\x1B[35m $1 \x1B[0m"; }
+function cyan()  { echo -e "\x1B[36m $1 \x1B[0m"; }
+function white() { echo -e "\x1B[37m $1 \x1B[0m"; }
+
+if [ "$( git rev-parse --abbrev-ref HEAD )" != "master" ]; then
+  >&2 red "[ERROR] Can only create versions of <master>"
+  exit 1
+fi
+
+git pull --ff
+
 curr_vers=$(git describe --tags --abbrev=0 | sed 's/v//g')
 
 next_ver=$(echo "$curr_vers" | awk -F. -v OFS=. 'NF==1{print ++$NF}; NF>1{if(length($NF+1)>length($NF))$(NF-1)++; $NF=sprintf("%0*d", length($NF), ($NF+1)%(10^length($NF))); print}')
@@ -18,7 +34,13 @@ echo ""
 
 git add --verbose .
 
-git commit -a -m "v${next_ver}"
+msg="v${next_ver}"
+
+if [ $# -gt 0 ]; then
+  msg="$1"
+fi
+
+git commit -a -m "${msg}"
 
 git tag "v${next_ver}"
 

cmdext/builder.go

@@ -2,24 +2,29 @@ package cmdext
 
 import (
 	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"time"
 )
 
 type CommandRunner struct {
-	program  string
+	program          string
-	args     []string
+	args             []string
-	timeout  *time.Duration
+	timeout          *time.Duration
-	env      []string
+	env              []string
-	listener []CommandListener
+	listener         []CommandListener
+	enforceExitCodes *[]int
+	enforceNoTimeout bool
 }
 
 func Runner(program string) *CommandRunner {
 	return &CommandRunner{
-		program:  program,
+		program:          program,
-		args:     make([]string, 0),
+		args:             make([]string, 0),
-		timeout:  nil,
+		timeout:          nil,
-		env:      make([]string, 0),
+		env:              make([]string, 0),
-		listener: make([]CommandListener, 0),
+		listener:         make([]CommandListener, 0),
+		enforceExitCodes: nil,
+		enforceNoTimeout: false,
 	}
 }
 
@@ -53,6 +58,21 @@ func (r *CommandRunner) Envs(env []string) *CommandRunner {
 	return r
 }
 
+func (r *CommandRunner) EnsureExitcode(arg ...int) *CommandRunner {
+	r.enforceExitCodes = langext.Ptr(langext.ForceArray(arg))
+	return r
+}
+
+func (r *CommandRunner) FailOnExitCode() *CommandRunner {
+	r.enforceExitCodes = langext.Ptr([]int{0})
+	return r
+}
+
+func (r *CommandRunner) FailOnTimeout() *CommandRunner {
+	r.enforceNoTimeout = true
+	return r
+}
+
 func (r *CommandRunner) Listen(lstr CommandListener) *CommandRunner {
 	r.listener = append(r.listener, lstr)
 	return r

cmdext/cmdrunner.go

@@ -1,12 +1,17 @@
 package cmdext
 
 import (
+	"errors"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
 	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
 	"os/exec"
 	"time"
 )
 
+var ErrExitCode = errors.New("process exited with an unexpected exitcode")
+var ErrTimeout = errors.New("process did not exit after the specified timeout")
+
 type CommandResult struct {
 	StdOut          string
 	StdErr          string
@@ -31,8 +36,9 @@ func run(opt CommandRunner) (CommandResult, error) {
 	}
 
 	preader := pipeReader{
-		stdout: stdoutPipe,
+		lineBufferSize: langext.Ptr(128 * 1024 * 1024), // 128MB max size of a single line, is hopefully enough....
-		stderr: stderrPipe,
+		stdout:         stdoutPipe,
+		stderr:         stderrPipe,
 	}
 
 	err = cmd.Start()
@@ -55,14 +61,17 @@ func run(opt CommandRunner) (CommandResult, error) {
 		stdout, stderr, stdcombined, err := preader.Read(opt.listener)
 		if err != nil {
 			outputChan <- resultObj{stdout, stderr, stdcombined, err}
+			_ = cmd.Process.Kill()
+			return
 		}
 
 		err = cmd.Wait()
 		if err != nil {
 			outputChan <- resultObj{stdout, stderr, stdcombined, err}
+		} else {
+			outputChan <- resultObj{stdout, stderr, stdcombined, nil}
 		}
 
-		outputChan <- resultObj{stdout, stderr, stdcombined, nil}
 	}()
 
 	var timeoutChan <-chan time.Time = make(chan time.Time, 1)
@@ -81,21 +90,29 @@ func run(opt CommandRunner) (CommandResult, error) {
 		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{
+			res := CommandResult{
 				StdOut:          fallback.stdout,
 				StdErr:          fallback.stderr,
 				StdCombined:     fallback.stdcombined,
 				ExitCode:        -1,
 				CommandTimedOut: true,
-			}, nil
+			}
+			if opt.enforceNoTimeout {
+				return res, ErrTimeout
+			}
+			return res, nil
 		} else {
-			return CommandResult{
+			res := CommandResult{
 				StdOut:          "",
 				StdErr:          "",
 				StdCombined:     "",
 				ExitCode:        -1,
 				CommandTimedOut: true,
-			}, nil
+			}
+			if opt.enforceNoTimeout {
+				return res, ErrTimeout
+			}
+			return res, nil
 		}
 
 	case outobj := <-outputChan:
@@ -104,26 +121,34 @@ func run(opt CommandRunner) (CommandResult, error) {
 			for _, lstr := range opt.listener {
 				lstr.Finished(excode)
 			}
-			return CommandResult{
+			res := CommandResult{
 				StdOut:          outobj.stdout,
 				StdErr:          outobj.stderr,
 				StdCombined:     outobj.stdcombined,
 				ExitCode:        excode,
 				CommandTimedOut: false,
-			}, nil
+			}
+			if opt.enforceExitCodes != nil && !langext.InArray(excode, *opt.enforceExitCodes) {
+				return res, ErrExitCode
+			}
+			return res, nil
 		} else if err != nil {
 			return CommandResult{}, err
 		} else {
 			for _, lstr := range opt.listener {
 				lstr.Finished(0)
 			}
-			return CommandResult{
+			res := CommandResult{
 				StdOut:          outobj.stdout,
 				StdErr:          outobj.stderr,
 				StdCombined:     outobj.stdcombined,
 				ExitCode:        0,
 				CommandTimedOut: false,
-			}, nil
+			}
+			if opt.enforceExitCodes != nil && !langext.InArray(0, *opt.enforceExitCodes) {
+				return res, ErrExitCode
+			}
+			return res, nil
 		}
 	}
 }

cmdext/cmdrunner_test.go

@@ -12,6 +12,12 @@ func TestStdout(t *testing.T) {
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
 	if res1.StdErr != "" {
 		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
 	}
@@ -30,6 +36,12 @@ func TestStderr(t *testing.T) {
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
 	if res1.StdErr != "error" {
 		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
 	}
@@ -50,6 +62,12 @@ func TestStdcombined(t *testing.T) {
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
 	if res1.StdErr != "1\n3\n" {
 		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
 	}
@@ -116,6 +134,12 @@ func TestReadUnflushedStdout(t *testing.T) {
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
 	if res1.StdErr != "" {
 		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
 	}
@@ -134,6 +158,12 @@ func TestReadUnflushedStderr(t *testing.T) {
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
 	if res1.StdErr != "message101" {
 		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
 	}
@@ -200,7 +230,7 @@ func TestPartialReadUnflushedStderr(t *testing.T) {
 
 func TestListener(t *testing.T) {
 
-	_, err := Runner("python").
+	res1, err := Runner("python").
 		Arg("-c").
 		Arg("import sys;" +
 			"import time;" +
@@ -223,4 +253,71 @@ func TestListener(t *testing.T) {
 	if err != nil {
 		panic(err)
 	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
+}
+
+func TestLongStdout(t *testing.T) {
+
+	res1, err := Runner("python").
+		Arg("-c").
+		Arg("import sys; import time; print(\"X\" * 125001 + \"\\n\"); print(\"Y\" * 125001 + \"\\n\"); print(\"Z\" * 125001 + \"\\n\");").
+		Timeout(5000 * time.Millisecond).
+		Run()
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != 0 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
+	if res1.StdErr != "" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if len(res1.StdOut) != 375009 {
+		t.Errorf("len(res1.StdOut) == '%v'", len(res1.StdOut))
+	}
+
+}
+
+func TestFailOnTimeout(t *testing.T) {
+
+	_, err := Runner("sleep").Arg("2").Timeout(200 * time.Millisecond).FailOnTimeout().Run()
+	if err != ErrTimeout {
+		t.Errorf("wrong err := %v", err)
+	}
+
+}
+
+func TestFailOnExitcode(t *testing.T) {
+
+	_, err := Runner("false").Timeout(200 * time.Millisecond).FailOnExitCode().Run()
+	if err != ErrExitCode {
+		t.Errorf("wrong err := %v", err)
+	}
+
+}
+
+func TestEnsureExitcode1(t *testing.T) {
+
+	_, err := Runner("false").Timeout(200 * time.Millisecond).EnsureExitcode(1).Run()
+	if err != nil {
+		t.Errorf("wrong err := %v", err)
+	}
+
+}
+
+func TestEnsureExitcode2(t *testing.T) {
+
+	_, err := Runner("false").Timeout(200*time.Millisecond).EnsureExitcode(0, 2, 3).Run()
+	if err != ErrExitCode {
+		t.Errorf("wrong err := %v", err)
+	}
+
 }

cmdext/pipereader.go

@@ -8,8 +8,9 @@ import (
 )
 
 type pipeReader struct {
-	stdout io.ReadCloser
+	lineBufferSize *int
-	stderr io.ReadCloser
+	stdout         io.ReadCloser
+	stderr         io.ReadCloser
 }
 
 // Read ready stdout and stdin until finished
@@ -33,7 +34,6 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 		buf := make([]byte, 128)
 		for true {
 			n, out := pr.stdout.Read(buf)
-
 			if n > 0 {
 				txt := string(buf[:n])
 				stdout += txt
@@ -91,6 +91,9 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	wg.Add(1)
 	go func() {
 		scanner := bufio.NewScanner(stdoutBufferReader)
+		if pr.lineBufferSize != nil {
+			scanner.Buffer([]byte{}, *pr.lineBufferSize)
+		}
 		for scanner.Scan() {
 			txt := scanner.Text()
 			for _, lstr := range listener {
@@ -98,6 +101,9 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 			}
 			combch <- combevt{txt, false}
 		}
+		if err := scanner.Err(); err != nil {
+			errch <- err
+		}
 		combch <- combevt{"", true}
 		wg.Done()
 	}()
@@ -107,6 +113,9 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	wg.Add(1)
 	go func() {
 		scanner := bufio.NewScanner(stderrBufferReader)
+		if pr.lineBufferSize != nil {
+			scanner.Buffer([]byte{}, *pr.lineBufferSize)
+		}
 		for scanner.Scan() {
 			txt := scanner.Text()
 			for _, lstr := range listener {
@@ -114,6 +123,9 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 			}
 			combch <- combevt{txt, false}
 		}
+		if err := scanner.Err(); err != nil {
+			errch <- err
+		}
 		combch <- combevt{"", true}
 		wg.Done()
 	}()

confext/confParser.go

@@ -22,10 +22,10 @@ import (
 //
 // 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 {
+func ApplyEnvOverrides[T any](prefix string, c *T, delim string) error {
 	rval := reflect.ValueOf(c).Elem()
 
-	return processEnvOverrides(rval, delim, "")
+	return processEnvOverrides(rval, delim, prefix)
 }
 
 func processEnvOverrides(rval reflect.Value, delim string, prefix string) error {
@@ -70,103 +70,114 @@ func processEnvOverrides(rval reflect.Value, delim string, prefix string) error
 			continue
 		}
 
-		if rvfield.Type() == reflect.TypeOf("") {
+		if rvfield.Type().Kind() == reflect.Pointer {
 
-			rvfield.Set(reflect.ValueOf(envval))
+			newval, err := parseEnvToValue(envval, fullEnvKey, rvfield.Type().Elem())
+			if err != nil {
+				return err
+			}
+
+			// converts reflect.Value to pointer
+			ptrval := reflect.New(rvfield.Type().Elem())
+			ptrval.Elem().Set(newval)
+
+			rvfield.Set(ptrval)
 
 			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(int(envint)))
-
-			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(int64(envint)))
-
-			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(int32(envint)))
-
-			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(int8(envint)))
-
-			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(dur))
-
-			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')", fullEnvKey, envval))
-			}
-
-			rvfield.Set(reflect.ValueOf(tim))
-
-			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(), fullEnvKey, envval))
-			}
-
-			envcvl := reflect.ValueOf(envint).Convert(rvfield.Type())
-
-			rvfield.Set(envcvl)
-
-			fmt.Printf("[CONF] Overwrite config '%s' with '%v'\n", fullEnvKey, envcvl.Interface())
-
-		} else if rvfield.Type().ConvertibleTo(reflect.TypeOf("")) {
-
-			envcvl := reflect.ValueOf(envval).Convert(rvfield.Type())
-
-			rvfield.Set(envcvl)
-
-			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()))
+
+			newval, err := parseEnvToValue(envval, fullEnvKey, rvfield.Type())
+			if err != nil {
+				return err
+			}
+
+			rvfield.Set(newval)
+			fmt.Printf("[CONF] Overwrite config '%s' with '%s'\n", fullEnvKey, envval)
+
 		}
+
 	}
 
 	return nil
 }
+
+func parseEnvToValue(envval string, fullEnvKey string, rvtype reflect.Type) (reflect.Value, error) {
+	if rvtype == reflect.TypeOf("") {
+
+		return reflect.ValueOf(envval), nil
+
+	} else if rvtype == reflect.TypeOf(int(0)) {
+
+		envint, err := strconv.ParseInt(envval, 10, bits.UintSize)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(int(envint)), nil
+
+	} else if rvtype == reflect.TypeOf(int64(0)) {
+
+		envint, err := strconv.ParseInt(envval, 10, 64)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int64 (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(int64(envint)), nil
+
+	} else if rvtype == reflect.TypeOf(int32(0)) {
+
+		envint, err := strconv.ParseInt(envval, 10, 32)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(int32(envint)), nil
+
+	} else if rvtype == reflect.TypeOf(int8(0)) {
+
+		envint, err := strconv.ParseInt(envval, 10, 8)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to int32 (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(int8(envint)), nil
+
+	} else if rvtype == reflect.TypeOf(time.Duration(0)) {
+
+		dur, err := timeext.ParseDurationShortString(envval)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to duration (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(dur), nil
+
+	} else if rvtype == reflect.TypeOf(time.UnixMilli(0)) {
+
+		tim, err := time.Parse(time.RFC3339Nano, envval)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to time.time (value := '%s')", fullEnvKey, envval))
+		}
+
+		return reflect.ValueOf(tim), nil
+
+	} else if rvtype.ConvertibleTo(reflect.TypeOf(int(0))) {
+
+		envint, err := strconv.ParseInt(envval, 10, 8)
+		if err != nil {
+			return reflect.Value{}, errors.New(fmt.Sprintf("Failed to parse env-config variable '%s' to <%s, ,int> (value := '%s')", rvtype.Name(), fullEnvKey, envval))
+		}
+
+		envcvl := reflect.ValueOf(envint).Convert(rvtype)
+
+		return envcvl, nil
+
+	} else if rvtype.ConvertibleTo(reflect.TypeOf("")) {
+
+		envcvl := reflect.ValueOf(envval).Convert(rvtype)
+		return envcvl, nil
+
+	} else {
+		return reflect.Value{}, errors.New(fmt.Sprintf("Unknown kind/type in config: [ %s | %s ]", rvtype.Kind().String(), rvtype.String()))
+	}
+}

confext/confParser_test.go

@@ -213,8 +213,65 @@ func TestApplyEnvOverridesRecursive(t *testing.T) {
 	assertEqual(t, data.Sub4.V9, time.Unix(2335219200, 0).UTC())
 }
 
+func TestApplyEnvOverridesPointer(t *testing.T) {
+
+	type aliasint int
+	type aliasstring string
+
+	type testdata struct {
+		V1 *int           `env:"TEST_V1"`
+		VX *string        ``
+		V2 *string        `env:"TEST_V2"`
+		V3 *int8          `env:"TEST_V3"`
+		V4 *int32         `env:"TEST_V4"`
+		V5 *int64         `env:"TEST_V5"`
+		V6 *aliasint      `env:"TEST_V6"`
+		VY *aliasint      ``
+		V7 *aliasstring   `env:"TEST_V7"`
+		V8 *time.Duration `env:"TEST_V8"`
+		V9 *time.Time     `env:"TEST_V9"`
+	}
+
+	data := testdata{}
+
+	t.Setenv("TEST_V1", "846")
+	t.Setenv("TEST_V2", "hello_world")
+	t.Setenv("TEST_V3", "6")
+	t.Setenv("TEST_V4", "333")
+	t.Setenv("TEST_V5", "-937")
+	t.Setenv("TEST_V6", "070")
+	t.Setenv("TEST_V7", "AAAAAA")
+	t.Setenv("TEST_V8", "1min4s")
+	t.Setenv("TEST_V9", "2009-11-10T23:00:00Z")
+
+	err := ApplyEnvOverrides(&data, ".")
+	if err != nil {
+		t.Errorf("%v", err)
+		t.FailNow()
+	}
+
+	assertPtrEqual(t, data.V1, 846)
+	assertPtrEqual(t, data.V2, "hello_world")
+	assertPtrEqual(t, data.V3, 6)
+	assertPtrEqual(t, data.V4, 333)
+	assertPtrEqual(t, data.V5, -937)
+	assertPtrEqual(t, data.V6, 70)
+	assertPtrEqual(t, data.V7, "AAAAAA")
+	assertPtrEqual(t, data.V8, time.Second*64)
+	assertPtrEqual(t, data.V9, time.Unix(1257894000, 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)
 	}
 }
+
+func assertPtrEqual[T comparable](t *testing.T, actual *T, expected T) {
+	if actual == nil {
+		t.Errorf("values differ: Actual: NIL, Expected: '%v'", expected)
+	}
+	if *actual != expected {
+		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)
+	}
+}

dataext/lruMap_test.go

@@ -12,7 +12,7 @@ func init() {
 }
 
 func TestResultCache1(t *testing.T) {
-	cache := NewLRUMap[string](8)
+	cache := NewLRUMap[string, string](8)
 	verifyLRUList(cache, t)
 
 	key := randomKey()
@@ -50,7 +50,7 @@ func TestResultCache1(t *testing.T) {
 }
 
 func TestResultCache2(t *testing.T) {
-	cache := NewLRUMap[string](8)
+	cache := NewLRUMap[string, string](8)
 	verifyLRUList(cache, t)
 
 	key1 := "key1"
@@ -150,7 +150,7 @@ func TestResultCache2(t *testing.T) {
 }
 
 func TestResultCache3(t *testing.T) {
-	cache := NewLRUMap[string](8)
+	cache := NewLRUMap[string, string](8)
 	verifyLRUList(cache, t)
 
 	key1 := "key1"
@@ -173,7 +173,7 @@ func TestResultCache3(t *testing.T) {
 }
 
 // does a basic consistency check over the internal cache representation
-func verifyLRUList[TData any](cache *LRUMap[TData], t *testing.T) {
+func verifyLRUList[TKey comparable, TData any](cache *LRUMap[TKey, TData], t *testing.T) {
 	size := 0
 
 	tailFound := false

go.mod

@@ -9,5 +9,6 @@ require (
 
 require (
 	github.com/jmoiron/sqlx v1.3.5 // indirect
+	go.mongodb.org/mongo-driver v1.11.1 // indirect
 	golang.org/x/crypto v0.4.0 // indirect
 )

go.sum

@@ -1,15 +1,50 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
+github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 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=
+github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
+github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
+github.com/xdg-go/scram v1.1.1/go.mod h1:RaEWvsqvNKKvBPvcKeFjrG2cJqOkHTiyTpzz23ni57g=
+github.com/xdg-go/stringprep v1.0.3/go.mod h1:W3f5j4i+9rC0kuIEJL0ky1VpHXQU3ocBgklLGvcBnW8=
+github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
+go.mongodb.org/mongo-driver v1.11.1 h1:QP0znIRTuL0jf1oBQoAoM0C6ZJfBK4kx0Uumtv1A7w8=
+go.mongodb.org/mongo-driver v1.11.1/go.mod h1:s7p5vEtfbeR1gYi6pnj3c3/urpbLv2T5Sfd6Rp2HBB8=
+golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 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/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 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 v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 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=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

langext/array.go

@@ -265,6 +265,46 @@ func ArrMap[T1 any, T2 any](arr []T1, conv func(v T1) T2) []T2 {
 	return r
 }
 
+func MapMap[TK comparable, TV any, TR any](inmap map[TK]TV, conv func(k TK, v TV) TR) []TR {
+	r := make([]TR, 0, len(inmap))
+	for k, v := range inmap {
+		r = append(r, conv(k, v))
+	}
+	return r
+}
+
+func MapMapErr[TK comparable, TV any, TR any](inmap map[TK]TV, conv func(k TK, v TV) (TR, error)) ([]TR, error) {
+	r := make([]TR, 0, len(inmap))
+	for k, v := range inmap {
+		elem, err := conv(k, v)
+		if err != nil {
+			return nil, err
+		}
+		r = append(r, elem)
+	}
+	return r, nil
+}
+
+func ArrMapExt[T1 any, T2 any](arr []T1, conv func(idx int, v T1) T2) []T2 {
+	r := make([]T2, len(arr))
+	for i, v := range arr {
+		r[i] = conv(i, v)
+	}
+	return r
+}
+
+func ArrMapErr[T1 any, T2 any](arr []T1, conv func(v T1) (T2, error)) ([]T2, error) {
+	var err error
+	r := make([]T2, len(arr))
+	for i, v := range arr {
+		r[i], err = conv(v)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return r, nil
+}
+
 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 {
@@ -275,6 +315,16 @@ func ArrFilterMap[T1 any, T2 any](arr []T1, filter func(v T1) bool, conv func(v
 	return r
 }
 
+func ArrFilter[T any](arr []T, filter func(v T) bool) []T {
+	r := make([]T, 0, len(arr))
+	for _, v := range arr {
+		if filter(v) {
+			r = append(r, v)
+		}
+	}
+	return r
+}
+
 func ArrSum[T NumberConstraint](arr []T) T {
 	var r T = 0
 	for _, v := range arr {
@@ -282,3 +332,27 @@ func ArrSum[T NumberConstraint](arr []T) T {
 	}
 	return r
 }
+
+func ArrFlatten[T1 any, T2 any](arr []T1, conv func(v T1) []T2) []T2 {
+	r := make([]T2, 0, len(arr))
+	for _, v1 := range arr {
+		r = append(r, conv(v1)...)
+	}
+	return r
+}
+
+func ArrFlattenDirect[T1 any](arr [][]T1) []T1 {
+	r := make([]T1, 0, len(arr))
+	for _, v1 := range arr {
+		r = append(r, v1...)
+	}
+	return r
+}
+
+func ArrCastToAny[T1 any](arr []T1) []any {
+	r := make([]any, len(arr))
+	for i, v := range arr {
+		r[i] = any(v)
+	}
+	return r
+}

langext/base58.go

@@ -0,0 +1,178 @@
+package langext
+
+import (
+	"bytes"
+	"errors"
+	"math/big"
+)
+
+// shamelessly stolen from https://github.com/btcsuite/
+
+type B58Encoding struct {
+	bigRadix     [11]*big.Int
+	bigRadix10   *big.Int
+	alphabet     string
+	alphabetIdx0 byte
+	b58          [256]byte
+}
+
+var Base58DefaultEncoding = newBase58Encoding("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz")
+var Base58FlickrEncoding = newBase58Encoding("123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ")
+var Base58RippleEncoding = newBase58Encoding("rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz")
+var Base58BitcoinEncoding = newBase58Encoding("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz")
+
+func newBase58Encoding(alphabet string) *B58Encoding {
+	bigRadix10 := big.NewInt(58 * 58 * 58 * 58 * 58 * 58 * 58 * 58 * 58 * 58)
+	enc := &B58Encoding{
+		alphabet:     alphabet,
+		alphabetIdx0: '1',
+		bigRadix: [...]*big.Int{
+			big.NewInt(0),
+			big.NewInt(58),
+			big.NewInt(58 * 58),
+			big.NewInt(58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58 * 58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58 * 58 * 58 * 58 * 58),
+			big.NewInt(58 * 58 * 58 * 58 * 58 * 58 * 58 * 58 * 58),
+			bigRadix10,
+		},
+		bigRadix10: bigRadix10,
+	}
+
+	b58 := make([]byte, 0, 256)
+
+	for i := byte(0); i < 32; i++ {
+		for j := byte(0); j < 8; j++ {
+
+			b := i*8 + j
+
+			idx := bytes.IndexByte([]byte(alphabet), b)
+			if idx == -1 {
+				b58 = append(b58, 255)
+			} else {
+				b58 = append(b58, byte(idx))
+			}
+
+		}
+	}
+
+	enc.b58 = *((*[256]byte)(b58))
+
+	return enc
+}
+
+func (enc *B58Encoding) EncodeString(src string) (string, error) {
+	v, err := enc.Encode([]byte(src))
+	if err != nil {
+		return "", err
+	}
+	return string(v), nil
+}
+
+func (enc *B58Encoding) Encode(src []byte) ([]byte, error) {
+	x := new(big.Int)
+	x.SetBytes(src)
+
+	// maximum length of output is log58(2^(8*len(b))) == len(b) * 8 / log(58)
+	maxlen := int(float64(len(src))*1.365658237309761) + 1
+	answer := make([]byte, 0, maxlen)
+	mod := new(big.Int)
+	for x.Sign() > 0 {
+		// Calculating with big.Int is slow for each iteration.
+		//    x, mod = x / 58, x % 58
+		//
+		// Instead we can try to do as much calculations on int64.
+		//    x, mod = x / 58^10, x % 58^10
+		//
+		// Which will give us mod, which is 10 digit base58 number.
+		// We'll loop that 10 times to convert to the answer.
+
+		x.DivMod(x, enc.bigRadix10, mod)
+		if x.Sign() == 0 {
+			// When x = 0, we need to ensure we don't add any extra zeros.
+			m := mod.Int64()
+			for m > 0 {
+				answer = append(answer, enc.alphabet[m%58])
+				m /= 58
+			}
+		} else {
+			m := mod.Int64()
+			for i := 0; i < 10; i++ {
+				answer = append(answer, enc.alphabet[m%58])
+				m /= 58
+			}
+		}
+	}
+
+	// leading zero bytes
+	for _, i := range src {
+		if i != 0 {
+			break
+		}
+		answer = append(answer, enc.alphabetIdx0)
+	}
+
+	// reverse
+	alen := len(answer)
+	for i := 0; i < alen/2; i++ {
+		answer[i], answer[alen-1-i] = answer[alen-1-i], answer[i]
+	}
+
+	return answer, nil
+}
+
+func (enc *B58Encoding) DecodeString(src string) (string, error) {
+	v, err := enc.Decode([]byte(src))
+	if err != nil {
+		return "", err
+	}
+	return string(v), nil
+}
+
+func (enc *B58Encoding) Decode(src []byte) ([]byte, error) {
+	answer := big.NewInt(0)
+	scratch := new(big.Int)
+
+	for t := src; len(t) > 0; {
+		n := len(t)
+		if n > 10 {
+			n = 10
+		}
+
+		total := uint64(0)
+		for _, v := range t[:n] {
+			if v > 255 {
+				return []byte{}, errors.New("invalid char in input")
+			}
+
+			tmp := enc.b58[v]
+			if tmp == 255 {
+				return []byte{}, errors.New("invalid char in input")
+			}
+			total = total*58 + uint64(tmp)
+		}
+
+		answer.Mul(answer, enc.bigRadix[n])
+		scratch.SetUint64(total)
+		answer.Add(answer, scratch)
+
+		t = t[n:]
+	}
+
+	tmpval := answer.Bytes()
+
+	var numZeros int
+	for numZeros = 0; numZeros < len(src); numZeros++ {
+		if src[numZeros] != enc.alphabetIdx0 {
+			break
+		}
+	}
+	flen := numZeros + len(tmpval)
+	val := make([]byte, flen)
+	copy(val[numZeros:], tmpval)
+
+	return val, nil
+}

langext/base58_test.go

@@ -0,0 +1,67 @@
+package langext
+
+import (
+	"testing"
+)
+
+func _encStr(t *testing.T, enc *B58Encoding, v string) string {
+	v, err := enc.EncodeString(v)
+	if err != nil {
+		t.Error(err)
+	}
+	return v
+}
+
+func _decStr(t *testing.T, enc *B58Encoding, v string) string {
+	v, err := enc.DecodeString(v)
+	if err != nil {
+		t.Error(err)
+	}
+	return v
+}
+
+func TestBase58DefaultEncoding(t *testing.T) {
+	assertEqual(t, _encStr(t, Base58DefaultEncoding, "Hello"), "9Ajdvzr")
+	assertEqual(t, _encStr(t, Base58DefaultEncoding, "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX")
+}
+
+func TestBase58DefaultDecoding(t *testing.T) {
+	assertEqual(t, _decStr(t, Base58DefaultEncoding, "9Ajdvzr"), "Hello")
+	assertEqual(t, _decStr(t, Base58DefaultEncoding, "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func TestBase58RippleEncoding(t *testing.T) {
+	assertEqual(t, _encStr(t, Base58RippleEncoding, "Hello"), "9wjdvzi")
+	assertEqual(t, _encStr(t, Base58RippleEncoding, "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "h3as3SMcJu26nokqPxhkUVCnd3Qwdgbd4Cp3gfReYrsFi7N44bMy11jqnGj1iJHEnzeZCq1huJM7JHifVbi7hXB7ZpEA9DVtqt894reXucNWSNZ26XVaAhy1GSWqGdFeYTJCrMdDzTg3vCcQV55CJjZX")
+}
+
+func TestBase58RippleDecoding(t *testing.T) {
+	assertEqual(t, _decStr(t, Base58RippleEncoding, "9wjdvzi"), "Hello")
+	assertEqual(t, _decStr(t, Base58RippleEncoding, "h3as3SMcJu26nokqPxhkUVCnd3Qwdgbd4Cp3gfReYrsFi7N44bMy11jqnGj1iJHEnzeZCq1huJM7JHifVbi7hXB7ZpEA9DVtqt894reXucNWSNZ26XVaAhy1GSWqGdFeYTJCrMdDzTg3vCcQV55CJjZX"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func TestBase58BitcoinEncoding(t *testing.T) {
+	assertEqual(t, _encStr(t, Base58BitcoinEncoding, "Hello"), "9Ajdvzr")
+	assertEqual(t, _encStr(t, Base58BitcoinEncoding, "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX")
+}
+
+func TestBase58BitcoinDecoding(t *testing.T) {
+	assertEqual(t, _decStr(t, Base58BitcoinEncoding, "9Ajdvzr"), "Hello")
+	assertEqual(t, _decStr(t, Base58BitcoinEncoding, "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func TestBase58FlickrEncoding(t *testing.T) {
+	assertEqual(t, _encStr(t, Base58FlickrEncoding, "Hello"), "9aJCVZR")
+	assertEqual(t, _encStr(t, Base58FlickrEncoding, "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "48638rmBiUzG5NKQoX4KcuE5C8paCFACnE28F7qDx13PRtennAmYSSJQ5gJSRihf5ZDyEQS4UimtihR7uARt4wbty2fW9duTQTM9n1DwUBevreyzGwu6W4YSgrvQgCPDxsiE1mCdZsF8VEBpuHHEiJyw")
+}
+
+func TestBase58FlickrDecoding(t *testing.T) {
+	assertEqual(t, _decStr(t, Base58FlickrEncoding, "9aJCVZR"), "Hello")
+	assertEqual(t, _decStr(t, Base58FlickrEncoding, "48638rmBiUzG5NKQoX4KcuE5C8paCFACnE28F7qDx13PRtennAmYSSJQ5gJSRihf5ZDyEQS4UimtihR7uARt4wbty2fW9duTQTM9n1DwUBevreyzGwu6W4YSgrvQgCPDxsiE1mCdZsF8VEBpuHHEiJyw"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func assertEqual(t *testing.T, actual string, expected string) {
+	if actual != expected {
+		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)
+	}
+}

langext/coalesce.go

@@ -60,3 +60,12 @@ func CoalesceStringer(s fmt.Stringer, def string) string {
 		return s.String()
 	}
 }
+
+func SafeCast[T any](v any, def T) T {
+	switch r := v.(type) {
+	case T:
+		return r
+	default:
+		return def
+	}
+}

rext/wrapper.go

@@ -1,6 +1,9 @@
 package rext
 
-import "regexp"
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"regexp"
+)
 
 type Regex interface {
 	IsMatch(haystack string) bool
@@ -29,6 +32,10 @@ type RegexMatchGroup struct {
 	end      int
 }
 
+type OptRegexMatchGroup struct {
+	v *RegexMatchGroup
+}
+
 func W(rex *regexp.Regexp) Regex {
 	return &regexWrapper{rex: rex, subnames: rex.SubexpNames()}
 }
@@ -97,7 +104,7 @@ 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)
+// GroupByName returns the value of a matched group (panics if not found!)
 func (m RegexMatch) GroupByName(name string) RegexMatchGroup {
 	for idx, subname := range m.subnames {
 		if subname == name {
@@ -107,6 +114,16 @@ func (m RegexMatch) GroupByName(name string) RegexMatchGroup {
 	panic("failed to find regex-group by name")
 }
 
+// GroupByName returns the value of a matched group (returns empty OptRegexMatchGroup if not found)
+func (m RegexMatch) GroupByNameOrEmpty(name string) OptRegexMatchGroup {
+	for idx, subname := range m.subnames {
+		if subname == name {
+			return OptRegexMatchGroup{&RegexMatchGroup{haystack: m.haystack, start: m.submatchesIndex[idx*2], end: m.submatchesIndex[idx*2+1]}}
+		}
+	}
+	return OptRegexMatchGroup{}
+}
+
 // ---------------------------------------------------------------------------------------------------------------------
 
 func (g RegexMatchGroup) Value() string {
@@ -128,3 +145,47 @@ func (g RegexMatchGroup) Range() (int, int) {
 func (g RegexMatchGroup) Length() int {
 	return g.end - g.start
 }
+
+// ---------------------------------------------------------------------------------------------------------------------
+
+func (g OptRegexMatchGroup) Value() string {
+	return g.v.Value()
+}
+
+func (g OptRegexMatchGroup) ValueOrEmpty() string {
+	if g.v == nil {
+		return ""
+	}
+	return g.v.Value()
+}
+
+func (g OptRegexMatchGroup) ValueOrNil() *string {
+	if g.v == nil {
+		return nil
+	}
+	return langext.Ptr(g.v.Value())
+}
+
+func (g OptRegexMatchGroup) IsEmpty() bool {
+	return g.v == nil
+}
+
+func (g OptRegexMatchGroup) Exists() bool {
+	return g.v != nil
+}
+
+func (g OptRegexMatchGroup) Start() int {
+	return g.v.Start()
+}
+
+func (g OptRegexMatchGroup) End() int {
+	return g.v.End()
+}
+
+func (g OptRegexMatchGroup) Range() (int, int) {
+	return g.v.Range()
+}
+
+func (g OptRegexMatchGroup) Length() int {
+	return g.v.Length()
+}

rfctime/interface.go

@@ -3,6 +3,52 @@ package rfctime
 import "time"
 
 type RFCTime interface {
+	AnyTime
+
+	Time() time.Time
+	Serialize() string
+
+	After(u AnyTime) bool
+	Before(u AnyTime) bool
+	Equal(u AnyTime) bool
+
+	Sub(u AnyTime) time.Duration
+}
+
+type AnyTime interface {
+	MarshalJSON() ([]byte, error)
+
+	MarshalBinary() ([]byte, error)
+
+	GobEncode() ([]byte, error)
+
+	MarshalText() ([]byte, error)
+
+	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
+	Unix() int64
+	UnixMilli() int64
+	UnixMicro() int64
+	UnixNano() int64
+	Format(layout string) string
+	GoString() string
+	String() string
+
+	Location() *time.Location
+}
+
+type RFCDuration interface {
 	Time() time.Time
 	Serialize() string
 
@@ -18,9 +64,9 @@ type RFCTime interface {
 	MarshalText() ([]byte, error)
 	UnmarshalText(data []byte) error
 
-	After(u RFCTime) bool
+	After(u AnyTime) bool
-	Before(u RFCTime) bool
+	Before(u AnyTime) bool
-	Equal(u RFCTime) bool
+	Equal(u AnyTime) bool
 	IsZero() bool
 	Date() (year int, month time.Month, day int)
 	Year() int
@@ -34,7 +80,7 @@ type RFCTime interface {
 	Second() int
 	Nanosecond() int
 	YearDay() int
-	Sub(u RFCTime) time.Duration
+	Sub(u AnyTime) time.Duration
 	Unix() int64
 	UnixMilli() int64
 	UnixMicro() int64
@@ -43,3 +89,13 @@ type RFCTime interface {
 	GoString() string
 	String() string
 }
+
+func tt(v AnyTime) time.Time {
+	if r, ok := v.(time.Time); ok {
+		return r
+	}
+	if r, ok := v.(RFCTime); ok {
+		return r.Time()
+	}
+	return time.Unix(0, v.UnixNano()).In(v.Location())
+}

rfctime/interface_test.go

@@ -0,0 +1,50 @@
+package rfctime
+
+import (
+	"testing"
+	"time"
+)
+
+func TestAnyTimeInterface(t *testing.T) {
+
+	var v AnyTime
+
+	v = NowRFC3339Nano()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowRFC3339()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnix()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnixMilli()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnixNano()
+	assertEqual(t, v.String(), v.String())
+
+	v = time.Now()
+	assertEqual(t, v.String(), v.String())
+
+}
+
+func TestRFCTimeInterface(t *testing.T) {
+	var v RFCTime
+
+	v = NowRFC3339Nano()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowRFC3339()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnix()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnixMilli()
+	assertEqual(t, v.String(), v.String())
+
+	v = NowUnixNano()
+	assertEqual(t, v.String(), v.String())
+
+}

rfctime/rfc3339.go

@@ -2,6 +2,10 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
 	"time"
 )
 
@@ -61,6 +65,23 @@ func (t *RFC3339Time) UnmarshalText(data []byte) error {
 	return nil
 }
 
+func (t *RFC3339Time) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt != bsontype.DateTime {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into RFC3339Time", bt))
+	}
+	var tt time.Time
+	err := bson.Unmarshal(data, &tt)
+	if err != nil {
+		return err
+	}
+	*t = RFC3339Time(tt)
+	return nil
+}
+
+func (t RFC3339Time) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(time.Time(t))
+}
+
 func (t RFC3339Time) Serialize() string {
 	return t.Time().Format(t.FormatStr())
 }
@@ -69,16 +90,16 @@ func (t RFC3339Time) FormatStr() string {
 	return time.RFC3339
 }
 
-func (t RFC3339Time) After(u RFCTime) bool {
+func (t RFC3339Time) After(u AnyTime) bool {
-	return t.Time().After(u.Time())
+	return t.Time().After(tt(u))
 }
 
-func (t RFC3339Time) Before(u RFCTime) bool {
+func (t RFC3339Time) Before(u AnyTime) bool {
-	return t.Time().Before(u.Time())
+	return t.Time().Before(tt(u))
 }
 
-func (t RFC3339Time) Equal(u RFCTime) bool {
+func (t RFC3339Time) Equal(u AnyTime) bool {
-	return t.Time().Equal(u.Time())
+	return t.Time().Equal(tt(u))
 }
 
 func (t RFC3339Time) IsZero() bool {
@@ -137,8 +158,8 @@ func (t RFC3339Time) Add(d time.Duration) RFC3339Time {
 	return RFC3339Time(t.Time().Add(d))
 }
 
-func (t RFC3339Time) Sub(u RFCTime) time.Duration {
+func (t RFC3339Time) Sub(u AnyTime) time.Duration {
-	return t.Time().Sub(u.Time())
+	return t.Time().Sub(tt(u))
 }
 
 func (t RFC3339Time) AddDate(years int, months int, days int) RFC3339Time {
@@ -173,6 +194,10 @@ func (t RFC3339Time) String() string {
 	return t.Time().String()
 }
 
+func (t RFC3339Time) Location() *time.Location {
+	return t.Time().Location()
+}
+
 func NewRFC3339(t time.Time) RFC3339Time {
 	return RFC3339Time(t)
 }

rfctime/rfc3339Nano.go

@@ -2,6 +2,10 @@ package rfctime
 
 import (
 	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
 	"time"
 )
 
@@ -61,6 +65,23 @@ func (t *RFC3339NanoTime) UnmarshalText(data []byte) error {
 	return nil
 }
 
+func (t *RFC3339NanoTime) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt != bsontype.DateTime {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into RFC3339NanoTime", bt))
+	}
+	var tt time.Time
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*t = RFC3339NanoTime(tt)
+	return nil
+}
+
+func (t RFC3339NanoTime) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(time.Time(t))
+}
+
 func (t RFC3339NanoTime) Serialize() string {
 	return t.Time().Format(t.FormatStr())
 }
@@ -69,16 +90,16 @@ func (t RFC3339NanoTime) FormatStr() string {
 	return time.RFC3339Nano
 }
 
-func (t RFC3339NanoTime) After(u RFCTime) bool {
+func (t RFC3339NanoTime) After(u AnyTime) bool {
-	return t.Time().After(u.Time())
+	return t.Time().After(tt(u))
 }
 
-func (t RFC3339NanoTime) Before(u RFCTime) bool {
+func (t RFC3339NanoTime) Before(u AnyTime) bool {
-	return t.Time().Before(u.Time())
+	return t.Time().Before(tt(u))
 }
 
-func (t RFC3339NanoTime) Equal(u RFCTime) bool {
+func (t RFC3339NanoTime) Equal(u AnyTime) bool {
-	return t.Time().Equal(u.Time())
+	return t.Time().Equal(tt(u))
 }
 
 func (t RFC3339NanoTime) IsZero() bool {
@@ -137,8 +158,8 @@ func (t RFC3339NanoTime) Add(d time.Duration) RFC3339NanoTime {
 	return RFC3339NanoTime(t.Time().Add(d))
 }
 
-func (t RFC3339NanoTime) Sub(u RFCTime) time.Duration {
+func (t RFC3339NanoTime) Sub(u AnyTime) time.Duration {
-	return t.Time().Sub(u.Time())
+	return t.Time().Sub(tt(u))
 }
 
 func (t RFC3339NanoTime) AddDate(years int, months int, days int) RFC3339NanoTime {
@@ -173,6 +194,10 @@ func (t RFC3339NanoTime) String() string {
 	return t.Time().String()
 }
 
+func (t RFC3339NanoTime) Location() *time.Location {
+	return t.Time().Location()
+}
+
 func NewRFC3339Nano(t time.Time) RFC3339NanoTime {
 	return RFC3339NanoTime(t)
 }

rfctime/rfc3339Nano_test.go

@@ -12,7 +12,7 @@ func TestRoundtrip(t *testing.T) {
 		Value RFC3339NanoTime `json:"v"`
 	}
 
-	val1 := NewRFC3339Nano(time.Now())
+	val1 := NewRFC3339Nano(time.Unix(0, 1675951556820915171))
 	w1 := Wrap{val1}
 
 	jstr1, err := json.Marshal(w1)
@@ -20,7 +20,8 @@ func TestRoundtrip(t *testing.T) {
 		panic(err)
 	}
 
-	if string(jstr1) != "{\"v\":\"2023-01-29T20:32:36.149692117+01:00\"}" {
+	if string(jstr1) != "{\"v\":\"2023-02-09T15:05:56.820915171+01:00\"}" {
+		t.Errorf(string(jstr1))
 		t.Errorf("repr differs")
 	}
 

rfctime/seconds.go

@@ -0,0 +1,59 @@
+package rfctime
+
+import (
+	"encoding/json"
+	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"time"
+)
+
+type SecondsF64 time.Duration
+
+func (d SecondsF64) Duration() time.Duration {
+	return time.Duration(d)
+}
+
+func (d SecondsF64) String() string {
+	return d.Duration().String()
+}
+
+func (d SecondsF64) Nanoseconds() int64 {
+	return d.Duration().Nanoseconds()
+}
+
+func (d SecondsF64) Microseconds() int64 {
+	return d.Duration().Microseconds()
+}
+
+func (d SecondsF64) Milliseconds() int64 {
+	return d.Duration().Milliseconds()
+}
+
+func (d SecondsF64) Seconds() float64 {
+	return d.Duration().Seconds()
+}
+
+func (d SecondsF64) Minutes() float64 {
+	return d.Duration().Minutes()
+}
+
+func (d SecondsF64) Hours() float64 {
+	return d.Duration().Hours()
+}
+
+func (d *SecondsF64) UnmarshalJSON(data []byte) error {
+	var secs float64 = 0
+	if err := json.Unmarshal(data, &secs); err != nil {
+		return err
+	}
+	*d = SecondsF64(timeext.FromSeconds(secs))
+	return nil
+}
+
+func (d SecondsF64) MarshalJSON() ([]byte, error) {
+	secs := d.Seconds()
+	return json.Marshal(secs)
+}
+
+func NewSecondsF64(t time.Duration) SecondsF64 {
+	return SecondsF64(t)
+}

rfctime/unix.go

@@ -63,16 +63,16 @@ func (t UnixTime) Serialize() string {
 	return strconv.FormatInt(t.Time().Unix(), 10)
 }
 
-func (t UnixTime) After(u RFCTime) bool {
+func (t UnixTime) After(u AnyTime) bool {
-	return t.Time().After(u.Time())
+	return t.Time().After(tt(u))
 }
 
-func (t UnixTime) Before(u RFCTime) bool {
+func (t UnixTime) Before(u AnyTime) bool {
-	return t.Time().Before(u.Time())
+	return t.Time().Before(tt(u))
 }
 
-func (t UnixTime) Equal(u RFCTime) bool {
+func (t UnixTime) Equal(u AnyTime) bool {
-	return t.Time().Equal(u.Time())
+	return t.Time().Equal(tt(u))
 }
 
 func (t UnixTime) IsZero() bool {
@@ -131,8 +131,8 @@ func (t UnixTime) Add(d time.Duration) UnixTime {
 	return UnixTime(t.Time().Add(d))
 }
 
-func (t UnixTime) Sub(u RFCTime) time.Duration {
+func (t UnixTime) Sub(u AnyTime) time.Duration {
-	return t.Time().Sub(u.Time())
+	return t.Time().Sub(tt(u))
 }
 
 func (t UnixTime) AddDate(years int, months int, days int) UnixTime {
@@ -167,6 +167,10 @@ func (t UnixTime) String() string {
 	return t.Time().String()
 }
 
+func (t UnixTime) Location() *time.Location {
+	return t.Time().Location()
+}
+
 func NewUnix(t time.Time) UnixTime {
 	return UnixTime(t)
 }

rfctime/unixMilli.go

@@ -63,16 +63,16 @@ func (t UnixMilliTime) Serialize() string {
 	return strconv.FormatInt(t.Time().UnixMilli(), 10)
 }
 
-func (t UnixMilliTime) After(u RFCTime) bool {
+func (t UnixMilliTime) After(u AnyTime) bool {
-	return t.Time().After(u.Time())
+	return t.Time().After(tt(u))
 }
 
-func (t UnixMilliTime) Before(u RFCTime) bool {
+func (t UnixMilliTime) Before(u AnyTime) bool {
-	return t.Time().Before(u.Time())
+	return t.Time().Before(tt(u))
 }
 
-func (t UnixMilliTime) Equal(u RFCTime) bool {
+func (t UnixMilliTime) Equal(u AnyTime) bool {
-	return t.Time().Equal(u.Time())
+	return t.Time().Equal(tt(u))
 }
 
 func (t UnixMilliTime) IsZero() bool {
@@ -131,8 +131,8 @@ func (t UnixMilliTime) Add(d time.Duration) UnixMilliTime {
 	return UnixMilliTime(t.Time().Add(d))
 }
 
-func (t UnixMilliTime) Sub(u RFCTime) time.Duration {
+func (t UnixMilliTime) Sub(u AnyTime) time.Duration {
-	return t.Time().Sub(u.Time())
+	return t.Time().Sub(tt(u))
 }
 
 func (t UnixMilliTime) AddDate(years int, months int, days int) UnixMilliTime {
@@ -167,6 +167,10 @@ func (t UnixMilliTime) String() string {
 	return t.Time().String()
 }
 
+func (t UnixMilliTime) Location() *time.Location {
+	return t.Time().Location()
+}
+
 func NewUnixMilli(t time.Time) UnixMilliTime {
 	return UnixMilliTime(t)
 }

rfctime/unixNano.go

@@ -63,16 +63,16 @@ func (t UnixNanoTime) Serialize() string {
 	return strconv.FormatInt(t.Time().UnixNano(), 10)
 }
 
-func (t UnixNanoTime) After(u RFCTime) bool {
+func (t UnixNanoTime) After(u AnyTime) bool {
-	return t.Time().After(u.Time())
+	return t.Time().After(tt(u))
 }
 
-func (t UnixNanoTime) Before(u RFCTime) bool {
+func (t UnixNanoTime) Before(u AnyTime) bool {
-	return t.Time().Before(u.Time())
+	return t.Time().Before(tt(u))
 }
 
-func (t UnixNanoTime) Equal(u RFCTime) bool {
+func (t UnixNanoTime) Equal(u AnyTime) bool {
-	return t.Time().Equal(u.Time())
+	return t.Time().Equal(tt(u))
 }
 
 func (t UnixNanoTime) IsZero() bool {
@@ -131,8 +131,8 @@ func (t UnixNanoTime) Add(d time.Duration) UnixNanoTime {
 	return UnixNanoTime(t.Time().Add(d))
 }
 
-func (t UnixNanoTime) Sub(u RFCTime) time.Duration {
+func (t UnixNanoTime) Sub(u AnyTime) time.Duration {
-	return t.Time().Sub(u.Time())
+	return t.Time().Sub(tt(u))
 }
 
 func (t UnixNanoTime) AddDate(years int, months int, days int) UnixNanoTime {
@@ -167,6 +167,10 @@ func (t UnixNanoTime) String() string {
 	return t.Time().String()
 }
 
+func (t UnixNanoTime) Location() *time.Location {
+	return t.Time().Location()
+}
+
 func NewUnixNano(t time.Time) UnixNanoTime {
 	return UnixNanoTime(t)
 }