v0.0.450 wpdf

dataext/casMutex.go

@@ -0,0 +1,254 @@
+package dataext
+
+import (
+	"context"
+	"golang.org/x/sync/semaphore"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"time"
+	"unsafe"
+)
+
+// from https://github.com/viney-shih/go-lock/blob/2f19fd8ce335e33e0ab9dccb1ff2ce820c3da332/cas.go
+
+// CASMutex is the struct implementing RWMutex with CAS mechanism.
+type CASMutex struct {
+	state     casState
+	turnstile *semaphore.Weighted
+
+	broadcastChan chan struct{}
+	broadcastMut  sync.RWMutex
+}
+
+func NewCASMutex() *CASMutex {
+	return &CASMutex{
+		state:         casStateNoLock,
+		turnstile:     semaphore.NewWeighted(1),
+		broadcastChan: make(chan struct{}),
+	}
+}
+
+type casState int32
+
+const (
+	casStateUndefined casState = iota - 2 // -2
+	casStateWriteLock                     // -1
+	casStateNoLock                        // 0
+	casStateReadLock                      // >= 1
+)
+
+func (m *CASMutex) getState(n int32) casState {
+	switch st := casState(n); {
+	case st == casStateWriteLock:
+		fallthrough
+	case st == casStateNoLock:
+		return st
+	case st >= casStateReadLock:
+		return casStateReadLock
+	default:
+		// actually, it should not happened.
+		return casStateUndefined
+	}
+}
+
+func (m *CASMutex) listen() <-chan struct{} {
+	m.broadcastMut.RLock()
+	defer m.broadcastMut.RUnlock()
+
+	return m.broadcastChan
+}
+
+func (m *CASMutex) broadcast() {
+	newCh := make(chan struct{})
+
+	m.broadcastMut.Lock()
+	ch := m.broadcastChan
+	m.broadcastChan = newCh
+	m.broadcastMut.Unlock()
+
+	close(ch)
+}
+
+func (m *CASMutex) tryLock(ctx context.Context) bool {
+	for {
+		broker := m.listen()
+		if atomic.CompareAndSwapInt32(
+			(*int32)(unsafe.Pointer(&m.state)),
+			int32(casStateNoLock),
+			int32(casStateWriteLock),
+		) {
+			return true
+		}
+
+		if ctx == nil {
+			return false
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		case <-broker:
+			// waiting for signal triggered by m.broadcast() and trying again.
+		}
+	}
+}
+
+// TryLockWithContext attempts to acquire the lock, blocking until resources
+// are available or ctx is done (timeout or cancellation).
+func (m *CASMutex) TryLockWithContext(ctx context.Context) bool {
+	if err := m.turnstile.Acquire(ctx, 1); err != nil {
+		// Acquire failed due to timeout or cancellation
+		return false
+	}
+
+	defer m.turnstile.Release(1)
+
+	return m.tryLock(ctx)
+}
+
+// Lock acquires the lock.
+// If it is currently held by others, Lock will wait until it has a chance to acquire it.
+func (m *CASMutex) Lock() {
+	ctx := context.Background()
+
+	m.TryLockWithContext(ctx)
+}
+
+// TryLock attempts to acquire the lock without blocking.
+// Return false if someone is holding it now.
+func (m *CASMutex) TryLock() bool {
+	if !m.turnstile.TryAcquire(1) {
+		return false
+	}
+
+	defer m.turnstile.Release(1)
+
+	return m.tryLock(nil)
+}
+
+// TryLockWithTimeout attempts to acquire the lock within a period of time.
+// Return false if spending time is more than duration and no chance to acquire it.
+func (m *CASMutex) TryLockWithTimeout(duration time.Duration) bool {
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
+	return m.TryLockWithContext(ctx)
+}
+
+// Unlock releases the lock.
+func (m *CASMutex) Unlock() {
+	if ok := atomic.CompareAndSwapInt32(
+		(*int32)(unsafe.Pointer(&m.state)),
+		int32(casStateWriteLock),
+		int32(casStateNoLock),
+	); !ok {
+		panic("Unlock failed")
+	}
+
+	m.broadcast()
+}
+
+func (m *CASMutex) rTryLock(ctx context.Context) bool {
+	for {
+		broker := m.listen()
+		n := atomic.LoadInt32((*int32)(unsafe.Pointer(&m.state)))
+		st := m.getState(n)
+		switch st {
+		case casStateNoLock, casStateReadLock:
+			if atomic.CompareAndSwapInt32((*int32)(unsafe.Pointer(&m.state)), n, n+1) {
+				return true
+			}
+		}
+
+		if ctx == nil {
+			return false
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		default:
+			switch st {
+			// read-lock failed due to concurrence issue, try again immediately
+			case casStateNoLock, casStateReadLock:
+				runtime.Gosched() // allow other goroutines to do stuff.
+				continue
+			}
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		case <-broker:
+			// waiting for signal triggered by m.broadcast() and trying again.
+		}
+	}
+}
+
+// RTryLockWithContext attempts to acquire the read lock, blocking until resources
+// are available or ctx is done (timeout or cancellation).
+func (m *CASMutex) RTryLockWithContext(ctx context.Context) bool {
+	if err := m.turnstile.Acquire(ctx, 1); err != nil {
+		// Acquire failed due to timeout or cancellation
+		return false
+	}
+
+	m.turnstile.Release(1)
+
+	return m.rTryLock(ctx)
+}
+
+// RLock acquires the read lock.
+// If it is currently held by others writing, RLock will wait until it has a chance to acquire it.
+func (m *CASMutex) RLock() {
+	ctx := context.Background()
+
+	m.RTryLockWithContext(ctx)
+}
+
+// RTryLock attempts to acquire the read lock without blocking.
+// Return false if someone is writing it now.
+func (m *CASMutex) RTryLock() bool {
+	if !m.turnstile.TryAcquire(1) {
+		return false
+	}
+
+	m.turnstile.Release(1)
+
+	return m.rTryLock(nil)
+}
+
+// RTryLockWithTimeout attempts to acquire the read lock within a period of time.
+// Return false if spending time is more than duration and no chance to acquire it.
+func (m *CASMutex) RTryLockWithTimeout(duration time.Duration) bool {
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
+	return m.RTryLockWithContext(ctx)
+}
+
+// RUnlock releases the read lock.
+func (m *CASMutex) RUnlock() {
+	n := atomic.AddInt32((*int32)(unsafe.Pointer(&m.state)), -1)
+	switch m.getState(n) {
+	case casStateUndefined, casStateWriteLock:
+		panic("RUnlock failed")
+	case casStateNoLock:
+		m.broadcast()
+	}
+}
+
+// RLocker returns a Locker interface that implements the Lock and Unlock methods
+// by calling CASMutex.RLock and CASMutex.RUnlock.
+func (m *CASMutex) RLocker() sync.Locker {
+	return (*rlocker)(m)
+}
+
+type rlocker CASMutex
+
+func (r *rlocker) Lock()   { (*CASMutex)(r).RLock() }
+func (r *rlocker) Unlock() { (*CASMutex)(r).RUnlock() }

dataext/syncMap.go

@@ -35,6 +35,23 @@ func (s *SyncMap[TKey, TData]) SetIfNotContains(key TKey, data TData) bool {
 	return true
 }
 
+func (s *SyncMap[TKey, TData]) SetIfNotContainsFunc(key TKey, data func() TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if _, existsInPreState := s.data[key]; existsInPreState {
+		return false
+	}
+
+	s.data[key] = data()
+
+	return true
+}
+
 func (s *SyncMap[TKey, TData]) Get(key TKey) (TData, bool) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -50,6 +67,39 @@ func (s *SyncMap[TKey, TData]) Get(key TKey) (TData, bool) {
 	}
 }
 
+func (s *SyncMap[TKey, TData]) GetAndSetIfNotContains(key TKey, data TData) TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if v, ok := s.data[key]; ok {
+		return v
+	} else {
+		s.data[key] = data
+		return data
+	}
+}
+
+func (s *SyncMap[TKey, TData]) GetAndSetIfNotContainsFunc(key TKey, data func() TData) TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if v, ok := s.data[key]; ok {
+		return v
+	} else {
+		dataObj := data()
+		s.data[key] = dataObj
+		return dataObj
+	}
+}
+
 func (s *SyncMap[TKey, TData]) Delete(key TKey) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()

go.mod

@@ -3,15 +3,20 @@ module gogs.mikescher.com/BlackForestBytes/goext
 go 1.22
 
 require (
-	github.com/gin-gonic/gin v1.9.1
+	github.com/gin-gonic/gin v1.10.0
 	github.com/glebarez/go-sqlite v1.22.0 // only needed for tests -.-
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/rs/xid v1.5.0
 	github.com/rs/zerolog v1.32.0
 	go.mongodb.org/mongo-driver v1.15.0
-	golang.org/x/crypto v0.22.0
-	golang.org/x/sys v0.19.0
-	golang.org/x/term v0.19.0
+	golang.org/x/crypto v0.23.0
+	golang.org/x/sys v0.20.0
+	golang.org/x/term v0.20.0
+)
+
+require (
+	github.com/jung-kurt/gofpdf v1.16.2
+	golang.org/x/sync v0.7.0
 )
 
 require (
@@ -47,11 +52,10 @@ require (
 	github.com/xdg-go/scram v1.1.2 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20240424034433-3c2c7870ae76 // indirect
-	golang.org/x/arch v0.7.0 // indirect
-	golang.org/x/net v0.24.0 // indirect
-	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
-	google.golang.org/protobuf v1.34.0 // indirect
+	golang.org/x/arch v0.8.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	modernc.org/libc v1.37.6 // indirect
 	modernc.org/mathutil v1.6.0 // indirect

go.sum

@@ -1,4 +1,5 @@
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
 github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
 github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
@@ -50,6 +51,8 @@ github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
 github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
 github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
+github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
+github.com/gin-gonic/gin v1.10.0/go.mod h1:4PMNQiOhvDRa013RKVbsiNwoyezlm2rm0uX/T7kzp5Y=
 github.com/glebarez/go-sqlite v1.22.0 h1:uAcMJhaA6r3LHMTFgP0SifzgXg46yJkgxqyuyec+ruQ=
 github.com/glebarez/go-sqlite v1.22.0/go.mod h1:PlBIdHe0+aUEFn+r2/uthrWq4FxbzugL0L8Li6yQJbc=
 github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
@@ -93,6 +96,9 @@ github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
 github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/jung-kurt/gofpdf v1.0.0/go.mod h1:7Id9E/uU8ce6rXgefFLlgrJj/GYY22cpxn+r32jIOes=
+github.com/jung-kurt/gofpdf v1.16.2 h1:jgbatWHfRlPYiK85qgevsZTHviWXKwB1TTiKdz5PtRc=
+github.com/jung-kurt/gofpdf v1.16.2/go.mod h1:1hl7y57EsiPAkLbOwzpzqgx1A30nQCk/YmFV8S2vmK0=
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
 github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
 github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
@@ -141,6 +147,8 @@ github.com/pelletier/go-toml/v2 v2.2.1 h1:9TA9+T8+8CUCO2+WYnDLCgrYi9+omqKXyjDtos
 github.com/pelletier/go-toml/v2 v2.2.1/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
 github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
+github.com/phpdave11/gofpdi v1.0.7/go.mod h1:vBmVV0Do6hSBHC8uKUQ71JGW+ZGQq74llk/7bXwjDoI=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -152,10 +160,12 @@ github.com/rs/zerolog v1.31.0 h1:FcTR3NnLWW+NnTwwhFWiJSZr4ECLpqCm6QsEnyvbV4A=
 github.com/rs/zerolog v1.31.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
 github.com/rs/zerolog v1.32.0 h1:keLypqrlIjaFsbmJOBdB/qvyF8KEtCWHwobLp5l/mQ0=
 github.com/rs/zerolog v1.32.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
+github.com/ruudk/golang-pdf417 v0.0.0-20181029194003-1af4ab5afa58/go.mod h1:6lfFZQK844Gfx8o5WFuvpxWRwnSoipWe/p622j1v06w=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -191,6 +201,8 @@ go.mongodb.org/mongo-driver v1.15.0/go.mod h1:Vzb0Mk/pa7e6cWw85R4F/endUC3u0U9jGc
 golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
 golang.org/x/arch v0.7.0 h1:pskyeJh/3AmoQ8CPE95vxHLqp1G1GfGNXTmcl9NEKTc=
 golang.org/x/arch v0.7.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
+golang.org/x/arch v0.8.0 h1:3wRIsP3pM4yUptoR96otTUOXI367OS0+c9eeRi9doIc=
+golang.org/x/arch v0.8.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
@@ -207,6 +219,9 @@ golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
 golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
 golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
 golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -223,6 +238,8 @@ golang.org/x/net v0.22.0 h1:9sGLhx7iRIHEiX0oAJ3MRZMUCElJgy7Br1nO+AMN3Tc=
 golang.org/x/net v0.22.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/net v0.24.0 h1:1PcaxkF854Fu3+lvBIx5SYn9wRlBzzcnHZSiaFFAb0w=
 golang.org/x/net v0.24.0/go.mod h1:2Q7sJY5mzlzWjKtYUEXSlBWCdyaioyXzRB2RtU8KVE8=
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
@@ -248,6 +265,8 @@ golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
 golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.16.0 h1:m+B6fahuftsE9qjo0VWp2FW0mB3MTJvR0BaMQrq0pmE=
@@ -258,6 +277,8 @@ golang.org/x/term v0.18.0 h1:FcHjZXDMxI8mM3nwhX9HlKop4C0YQvCVCdwYl2wOtE8=
 golang.org/x/term v0.18.0/go.mod h1:ILwASektA3OnRv7amZ1xhE/KTR+u50pbXfZ03+6Nx58=
 golang.org/x/term v0.19.0 h1:+ThwsDv+tYfnJFhF4L8jITxu1tdTWRTZpdsWgEgjL6Q=
 golang.org/x/term v0.19.0/go.mod h1:2CuTdWZ7KHSQwUzKva0cbMg6q2DMI3Mmxp+gKJbskEk=
+golang.org/x/term v0.20.0 h1:VnkxpohqXaOBYJtBmEppKUG6mXpi+4O6purfc2+sMhw=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -266,6 +287,8 @@ golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
@@ -279,6 +302,8 @@ google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGm
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 google.golang.org/protobuf v1.34.0 h1:Qo/qEd2RZPCf2nKuorzksSknv0d3ERwp1vFG38gSmH4=
 google.golang.org/protobuf v1.34.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
+google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.445"
+const GoextVersion = "0.0.450"
 
-const GoextVersionTimestamp = "2024-05-03T15:28:53+0200"
+const GoextVersionTimestamp = "2024-05-14T11:52:56+0200"

wmo/collection.go

@@ -52,6 +52,7 @@ type Coll[TData any] struct {
 	customDecoder       *func(ctx context.Context, dec Decodable) (TData, error) // custom decoding function (useful if TData is an interface)
 	isInterfaceDataType bool                                                     // true if TData is an interface (not a struct)
 	unmarshalHooks      []func(d TData) TData                                    // called for every object after unmarshalling
+	marshalHooks        []func(d TData) TData                                    // called for every object before marshalling
 	extraModPipeline    []func(ctx context.Context) mongo.Pipeline               // appended to pipelines after filter/limit/skip/sort, used for $lookup, $set, $unset, $project, etc
 }
 
@@ -83,18 +84,32 @@ func (c *Coll[TData]) WithDecodeFunc(cdf func(ctx context.Context, dec Decodable
 	return c
 }
 
+// WithUnmarshalHook
+// function that is called for every object after reading from DB
 func (c *Coll[TData]) WithUnmarshalHook(fn func(d TData) TData) *Coll[TData] {
 	c.unmarshalHooks = append(c.unmarshalHooks, fn)
 
 	return c
 }
 
+// WithMarshalHook
+// function that is called for every object before writing to DB
+func (c *Coll[TData]) WithMarshalHook(fn func(d TData) TData) *Coll[TData] {
+	c.marshalHooks = append(c.marshalHooks, fn)
+
+	return c
+}
+
+// WithModifyingPipeline
+// pipeline that is appended to all read operations (after filtering)
 func (c *Coll[TData]) WithModifyingPipeline(p mongo.Pipeline) *Coll[TData] {
 	c.extraModPipeline = append(c.extraModPipeline, func(ctx context.Context) mongo.Pipeline { return p })
 
 	return c
 }
 
+// WithModifyingPipelineFunc
+// pipeline that is appended to all read operations (after filtering)
 func (c *Coll[TData]) WithModifyingPipelineFunc(fn func(ctx context.Context) mongo.Pipeline) *Coll[TData] {
 	c.extraModPipeline = append(c.extraModPipeline, fn)
 

wmo/queryInsert.go

@@ -9,6 +9,10 @@ import (
 )
 
 func (c *Coll[TData]) InsertOne(ctx context.Context, valueIn TData) (TData, error) {
+	for _, hook := range c.marshalHooks {
+		valueIn = hook(valueIn)
+	}
+
 	insRes, err := c.coll.InsertOne(ctx, valueIn)
 	if err != nil {
 		return *new(TData), exerr.Wrap(err, "mongo-query[insert-one] failed").Str("collection", c.Name()).Build()
@@ -36,6 +40,12 @@ func (c *Coll[TData]) InsertOneUnchecked(ctx context.Context, valueIn any) (TDat
 }
 
 func (c *Coll[TData]) InsertMany(ctx context.Context, valueIn []TData) (*mongo.InsertManyResult, error) {
+	for _, hook := range c.marshalHooks {
+		for i := 0; i < len(valueIn); i++ {
+			valueIn[i] = hook(valueIn[i])
+		}
+	}
+
 	insRes, err := c.coll.InsertMany(ctx, langext.ArrayToInterface(valueIn))
 	if err != nil {
 		return nil, exerr.Wrap(err, "mongo-query[insert-many] failed").Int("len(valueIn)", len(valueIn)).Str("collection", c.Name()).Build()

wmo/queryUpdate.go

@@ -61,6 +61,10 @@ func (c *Coll[TData]) UpdateMany(ctx context.Context, filterQuery bson.M, update
 }
 
 func (c *Coll[TData]) ReplaceOne(ctx context.Context, filterQuery bson.M, value TData) error {
+	for _, hook := range c.marshalHooks {
+		value = hook(value)
+	}
+
 	_, err := c.coll.UpdateOne(ctx, filterQuery, bson.M{"$set": value})
 	if err != nil {
 		return exerr.Wrap(err, "mongo-query[replace-one] failed").
@@ -73,6 +77,10 @@ func (c *Coll[TData]) ReplaceOne(ctx context.Context, filterQuery bson.M, value
 }
 
 func (c *Coll[TData]) FindOneAndReplace(ctx context.Context, filterQuery bson.M, value TData) (TData, error) {
+	for _, hook := range c.marshalHooks {
+		value = hook(value)
+	}
+
 	mongoRes := c.coll.FindOneAndReplace(ctx, filterQuery, value, options.FindOneAndReplace().SetReturnDocument(options.After))
 	if err := mongoRes.Err(); err != nil {
 		return *new(TData), exerr.Wrap(err, "mongo-query[find-one-and-update] failed").

wpdf/wpdf.go

@@ -0,0 +1,183 @@
+package wpdf
+
+import (
+	"bytes"
+	"github.com/jung-kurt/gofpdf"
+)
+
+type WPDFBuilder struct {
+	b          *gofpdf.Fpdf
+	tr         func(string) string
+	cellHeight float64
+	fontName   PDFFontFamily
+	fontStyle  PDFFontStyle
+	fontSize   float64
+}
+
+type PDFMargins struct {
+	Left  float64
+	Top   float64
+	Right float64
+}
+
+type PDFColor struct {
+	R int
+	G int
+	B int
+}
+
+func NewPDFBuilder(orientation PDFOrientation, size PDFSize, unicode bool) *WPDFBuilder {
+
+	fpdfbuilder := gofpdf.New(string(orientation), "mm", string(size), "")
+
+	var tr func(string) string
+	if unicode {
+		tr = fpdfbuilder.UnicodeTranslatorFromDescriptor("")
+	} else {
+		tr = func(s string) string { return s }
+	}
+
+	b := &WPDFBuilder{
+		b:          fpdfbuilder,
+		tr:         tr,
+		cellHeight: 5,
+	}
+
+	b.SetMargins(PDFMargins{Left: 15, Top: 25, Right: 15}) // default values
+	b.SetFont(FontHelvetica, Normal, 12)                   // ensures font is set
+
+	return b
+}
+
+func (b *WPDFBuilder) SetMargins(v PDFMargins) {
+	b.b.SetMargins(v.Left, v.Top, v.Right)
+}
+
+func (b *WPDFBuilder) AddPage() {
+	b.b.AddPage()
+}
+
+func (b *WPDFBuilder) SetTextColor(cr, cg, cb int) {
+	b.b.SetTextColor(cr, cg, cb)
+}
+
+func (b *WPDFBuilder) GetTextColor() (cr, cg, cb int) {
+	return b.b.GetTextColor()
+}
+
+func (b *WPDFBuilder) SetDrawColor(cr, cg, cb int) {
+	b.b.SetDrawColor(cr, cg, cb)
+}
+
+func (b *WPDFBuilder) GetDrawColor() (cr, cg, cb int) {
+	return b.b.GetDrawColor()
+}
+
+func (b *WPDFBuilder) SetFillColor(cr, cg, cb int) {
+	b.b.SetFillColor(cr, cg, cb)
+}
+
+func (b *WPDFBuilder) GetFillColor() (cr, cg, cb int) {
+	return b.b.GetFillColor()
+}
+
+func (b *WPDFBuilder) SetLineWidth(w float64) {
+	b.b.SetLineWidth(w)
+}
+
+func (b *WPDFBuilder) GetLineWidth() float64 {
+	return b.b.GetLineWidth()
+}
+
+func (b *WPDFBuilder) SetFont(fontName PDFFontFamily, fontStyle PDFFontStyle, fontSize float64) {
+	b.b.SetFont(string(fontName), string(fontStyle), fontSize)
+
+	b.fontName = fontName
+	b.fontStyle = fontStyle
+	b.fontSize = fontSize
+
+	b.cellHeight = b.b.PointConvert(fontSize)
+}
+
+func (b *WPDFBuilder) Ln(h float64) {
+	b.b.Ln(h)
+}
+
+func (b *WPDFBuilder) Build() ([]byte, error) {
+	buf := new(bytes.Buffer)
+	err := b.b.Output(buf)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+func (b *WPDFBuilder) SetX(x float64) {
+	b.b.SetX(x)
+}
+
+func (b *WPDFBuilder) GetX() float64 {
+	return b.b.GetX()
+}
+
+func (b *WPDFBuilder) SetY(y float64) {
+	b.b.SetY(y)
+}
+
+func (b *WPDFBuilder) GetY() float64 {
+	return b.b.GetY()
+}
+
+func (b *WPDFBuilder) SetXY(x float64, y float64) {
+	b.b.SetXY(x, y)
+}
+
+func (b *WPDFBuilder) GetXY() (x float64, y float64) {
+	return b.b.GetXY()
+}
+
+func (b *WPDFBuilder) GetMargins() (left, top, right, bottom float64) {
+	return b.b.GetMargins()
+}
+
+func (b *WPDFBuilder) GetMarginLeft() float64 {
+	v, _, _, _ := b.b.GetMargins()
+	return v
+}
+
+func (b *WPDFBuilder) GetMarginTop() float64 {
+	_, v, _, _ := b.b.GetMargins()
+	return v
+}
+
+func (b *WPDFBuilder) GetMarginRight() float64 {
+	_, _, v, _ := b.b.GetMargins()
+	return v
+}
+
+func (b *WPDFBuilder) GetMarginBottom() float64 {
+	_, _, _, v := b.b.GetMargins()
+	return v
+}
+
+func (b *WPDFBuilder) GetPageSize() (width, height float64) {
+	return b.b.GetPageSize()
+}
+
+func (b *WPDFBuilder) GetPageWidth() float64 {
+	v, _ := b.b.GetPageSize()
+	return v
+}
+
+func (b *WPDFBuilder) GetPageHeight() float64 {
+	_, v := b.b.GetPageSize()
+	return v
+}
+
+func (b *WPDFBuilder) GetWorkAreaWidth() float64 {
+	return b.GetPageWidth() - b.GetMarginLeft() - b.GetMarginRight()
+}
+
+func (b *WPDFBuilder) GetStringWidth(str string) float64 {
+	return b.b.GetStringWidth(str)
+}

wpdf/wpdfCell.go

@@ -0,0 +1,173 @@
+package wpdf
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+
+type PDFCellOpt struct {
+	width             *float64
+	height            *float64
+	border            *PDFBorder
+	ln                *PDFTextBreak
+	align             *PDFTextAlign
+	fill              *bool
+	link              *int
+	linkStr           *string
+	fontNameOverride  *PDFFontFamily
+	fontStyleOverride *PDFFontStyle
+	fontSizeOverride  *float64
+	extraLn           *float64
+	x                 *float64
+	autoWidth         *bool
+}
+
+func NewPDFCellOpt() *PDFCellOpt {
+	return &PDFCellOpt{}
+}
+
+func (opt *PDFCellOpt) Width(v float64) *PDFCellOpt {
+	opt.width = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Height(v float64) *PDFCellOpt {
+	opt.height = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Border(v PDFBorder) *PDFCellOpt {
+	opt.border = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) LnPos(v PDFTextBreak) *PDFCellOpt {
+	opt.ln = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Align(v PDFTextAlign) *PDFCellOpt {
+	opt.align = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) FillBackground(v bool) *PDFCellOpt {
+	opt.fill = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Link(v int) *PDFCellOpt {
+	opt.link = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) LinkStr(v string) *PDFCellOpt {
+	opt.linkStr = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Font(fontName PDFFontFamily, fontStyle PDFFontStyle, fontSize float64) *PDFCellOpt {
+	opt.fontNameOverride = &fontName
+	opt.fontStyleOverride = &fontStyle
+	opt.fontSizeOverride = &fontSize
+	return opt
+}
+
+func (opt *PDFCellOpt) FontName(v PDFFontFamily) *PDFCellOpt {
+	opt.fontNameOverride = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) FontStyle(v PDFFontStyle) *PDFCellOpt {
+	opt.fontStyleOverride = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) FontSize(v float64) *PDFCellOpt {
+	opt.fontSizeOverride = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) Bold() *PDFCellOpt {
+	opt.fontStyleOverride = langext.Ptr(Bold)
+	return opt
+}
+
+func (opt *PDFCellOpt) Italic() *PDFCellOpt {
+	opt.fontStyleOverride = langext.Ptr(Italic)
+	return opt
+}
+
+func (opt *PDFCellOpt) LnAfter(v float64) *PDFCellOpt {
+	opt.extraLn = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) X(v float64) *PDFCellOpt {
+	opt.x = &v
+	return opt
+}
+
+func (opt *PDFCellOpt) AutoWidth() *PDFCellOpt {
+	opt.autoWidth = langext.PTrue
+	return opt
+}
+
+func (b *WPDFBuilder) Cell(txt string, opts ...*PDFCellOpt) {
+
+	txtTR := b.tr(txt)
+
+	width := float64(0)
+	height := b.cellHeight
+	border := BorderNone
+	ln := BreakToNextLine
+	align := AlignLeft
+	fill := false
+	link := 0
+	linkStr := ""
+	var fontNameOverride *PDFFontFamily
+	var fontStyleOverride *PDFFontStyle
+	var fontSizeOverride *float64
+	extraLn := float64(0)
+	var x *float64
+	autoWidth := false
+
+	for _, opt := range opts {
+		width = langext.Coalesce(opt.width, width)
+		height = langext.Coalesce(opt.height, height)
+		border = langext.Coalesce(opt.border, border)
+		ln = langext.Coalesce(opt.ln, ln)
+		align = langext.Coalesce(opt.align, align)
+		fill = langext.Coalesce(opt.fill, fill)
+		link = langext.Coalesce(opt.link, link)
+		linkStr = langext.Coalesce(opt.linkStr, linkStr)
+		fontNameOverride = langext.CoalesceOpt(opt.fontNameOverride, fontNameOverride)
+		fontStyleOverride = langext.CoalesceOpt(opt.fontStyleOverride, fontStyleOverride)
+		fontSizeOverride = langext.CoalesceOpt(opt.fontSizeOverride, fontSizeOverride)
+		extraLn = langext.Coalesce(opt.extraLn, extraLn)
+		x = langext.CoalesceOpt(opt.x, x)
+		autoWidth = langext.Coalesce(opt.autoWidth, autoWidth)
+	}
+
+	if fontNameOverride != nil || fontStyleOverride != nil || fontSizeOverride != nil {
+		oldFontName := b.fontName
+		oldFontStyle := b.fontStyle
+		oldFontSize := b.fontSize
+		newFontName := langext.Coalesce(fontNameOverride, oldFontName)
+		newFontStyle := langext.Coalesce(fontStyleOverride, oldFontStyle)
+		newFontSize := langext.Coalesce(fontSizeOverride, oldFontSize)
+		b.SetFont(newFontName, newFontStyle, newFontSize)
+		defer func() { b.SetFont(oldFontName, oldFontStyle, oldFontSize) }()
+	}
+
+	if x != nil {
+		b.b.SetX(*x)
+	}
+
+	if autoWidth {
+		width = b.b.GetStringWidth(txtTR)
+	}
+
+	b.b.CellFormat(width, height, txtTR, string(border), int(ln), string(align), fill, link, linkStr)
+
+	if extraLn != 0 {
+		b.b.Ln(extraLn)
+	}
+}

wpdf/wpdfConstants.go

@@ -0,0 +1,80 @@
+package wpdf
+
+type PDFOrientation string
+
+const (
+	Portrait  PDFOrientation = "P"
+	Landscape PDFOrientation = "L"
+)
+
+type PDFSize string
+
+const (
+	SizeA3      PDFSize = "A3"
+	SizeA4      PDFSize = "A4"
+	SizeA5      PDFSize = "A4"
+	SizeLetter  PDFSize = "Letter"
+	SizeLegal   PDFSize = "Legal"
+	SizeTabloid PDFSize = "Tabloid"
+)
+
+type PDFFontFamily string
+
+const (
+	FontCourier      PDFFontFamily = "courier"
+	FontHelvetica    PDFFontFamily = "helvetica"
+	FontTimes        PDFFontFamily = "times"
+	FontZapfDingbats PDFFontFamily = "zapfdingbats"
+	FontSymbol       PDFFontFamily = "symbol"
+)
+
+type PDFFontStyle string
+
+const (
+	Normal     PDFFontStyle = ""
+	Bold       PDFFontStyle = "B"
+	Italic     PDFFontStyle = "I"
+	BoldItalic PDFFontStyle = "IB"
+)
+
+type PDFBorder string
+
+const (
+	BorderNone   PDFBorder = ""
+	BorderFull   PDFBorder = "1"
+	BorderLeft   PDFBorder = "L"
+	BorderTop    PDFBorder = "T"
+	BorderRight  PDFBorder = "R"
+	BorderBottom PDFBorder = "B"
+	BorderTLR    PDFBorder = "TLR"
+	BorderLR     PDFBorder = "LR"
+)
+
+type PDFTextBreak int
+
+const (
+	BreakToRight    PDFTextBreak = 0
+	BreakToNextLine PDFTextBreak = 1
+	BreakToBelow    PDFTextBreak = 2
+)
+
+type PDFTextAlign string
+
+const (
+	AlignLeft       PDFTextAlign = "L"
+	AlignHorzCenter PDFTextAlign = "C"
+	AlignRight      PDFTextAlign = "R"
+)
+
+type PDFRectStyle string
+
+const (
+	RectFill        PDFRectStyle = "F"
+	RectOutline     PDFRectStyle = "D"
+	RectFillOutline PDFRectStyle = "FD"
+)
+
+const (
+	BackgroundFill        = true
+	BackgroundTransparent = false
+)

wpdf/wpdfImage.go

@@ -0,0 +1,186 @@
+package wpdf
+
+import (
+	"bytes"
+	"github.com/jung-kurt/gofpdf"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+)
+
+type PDFImageRef struct {
+	Info *gofpdf.ImageInfoType
+	Name string
+}
+
+type PDFImageRegisterOpt struct {
+	imageType             *string
+	readDpi               *bool
+	allowNegativePosition *bool
+	name                  *string
+}
+
+func NewPDFImageRegisterOpt() *PDFImageRegisterOpt {
+	return &PDFImageRegisterOpt{}
+}
+
+func (opt *PDFImageRegisterOpt) ImageType(v string) *PDFImageRegisterOpt {
+	opt.imageType = &v
+	return opt
+}
+
+func (opt *PDFImageRegisterOpt) ReadDpi(v bool) *PDFImageRegisterOpt {
+	opt.readDpi = &v
+	return opt
+}
+
+func (opt *PDFImageRegisterOpt) AllowNegativePosition(v bool) *PDFImageRegisterOpt {
+	opt.allowNegativePosition = &v
+	return opt
+}
+
+func (opt *PDFImageRegisterOpt) Name(v string) *PDFImageRegisterOpt {
+	opt.name = &v
+	return opt
+}
+
+func (b *WPDFBuilder) RegisterImage(bin []byte, opts ...*PDFImageRegisterOpt) *PDFImageRef {
+	imgName := "fpdf_img_" + langext.MustRawHexUUID()
+	imageType := ""
+	readDpi := false
+	allowNegativePosition := false
+
+	for _, opt := range opts {
+		imageType = langext.Coalesce(opt.imageType, imageType)
+		readDpi = langext.Coalesce(opt.readDpi, readDpi)
+		allowNegativePosition = langext.Coalesce(opt.allowNegativePosition, allowNegativePosition)
+		imgName = langext.Coalesce(opt.name, imgName)
+	}
+
+	if imageType == "" {
+		ct := http.DetectContentType(bin[:512])
+		switch ct {
+		case "image/jpg":
+			imageType = "JPG"
+		case "image/jpeg":
+			imageType = "JPEG"
+		case "image/png":
+			imageType = "PNG"
+		case "image/gif":
+			imageType = "GIF"
+		}
+	}
+
+	options := gofpdf.ImageOptions{
+		ImageType:             imageType,
+		ReadDpi:               readDpi,
+		AllowNegativePosition: allowNegativePosition,
+	}
+
+	info := b.b.RegisterImageOptionsReader(imgName, options, bytes.NewReader(bin))
+
+	return &PDFImageRef{
+		Name: imgName,
+		Info: info,
+	}
+}
+
+type PDFImageOpt struct {
+	x                     *float64
+	y                     *float64
+	width                 *float64
+	height                *float64
+	flow                  *bool
+	link                  *int
+	linkStr               *string
+	imageType             *string
+	readDpi               *bool
+	allowNegativePosition *bool
+}
+
+func NewPDFImageOpt() *PDFImageOpt {
+	return &PDFImageOpt{}
+}
+
+func (opt *PDFImageOpt) X(v float64) *PDFImageOpt {
+	opt.x = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) Y(v float64) *PDFImageOpt {
+	opt.y = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) Width(v float64) *PDFImageOpt {
+	opt.width = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) Height(v float64) *PDFImageOpt {
+	opt.height = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) Flow(v bool) *PDFImageOpt {
+	opt.flow = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) Link(v int) *PDFImageOpt {
+	opt.link = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) LinkStr(v string) *PDFImageOpt {
+	opt.linkStr = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) ImageType(v string) *PDFImageOpt {
+	opt.imageType = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) ReadDpi(v bool) *PDFImageOpt {
+	opt.readDpi = &v
+	return opt
+}
+
+func (opt *PDFImageOpt) AllowNegativePosition(v bool) *PDFImageOpt {
+	opt.allowNegativePosition = &v
+	return opt
+}
+
+func (b *WPDFBuilder) Image(img *PDFImageRef, opts ...*PDFImageOpt) {
+	x := b.GetX()
+	y := b.GetY()
+	w := img.Info.Width()
+	h := img.Info.Height()
+	flow := true
+	link := 0
+	linkStr := ""
+	imageType := ""
+	readDpi := false
+	allowNegativePosition := false
+
+	for _, opt := range opts {
+		x = langext.Coalesce(opt.x, x)
+		y = langext.Coalesce(opt.y, y)
+		w = langext.Coalesce(opt.width, w)
+		h = langext.Coalesce(opt.height, h)
+		flow = langext.Coalesce(opt.flow, flow)
+		link = langext.Coalesce(opt.link, link)
+		linkStr = langext.Coalesce(opt.linkStr, linkStr)
+		imageType = langext.Coalesce(opt.imageType, imageType)
+		readDpi = langext.Coalesce(opt.readDpi, readDpi)
+		allowNegativePosition = langext.Coalesce(opt.allowNegativePosition, allowNegativePosition)
+	}
+
+	fpdfOpt := gofpdf.ImageOptions{
+		ImageType:             imageType,
+		ReadDpi:               readDpi,
+		AllowNegativePosition: allowNegativePosition,
+	}
+
+	b.b.ImageOptions(img.Name, x, y, w, h, flow, fpdfOpt, link, linkStr)
+}

wpdf/wpdfMultiCell.go

@@ -0,0 +1,137 @@
+package wpdf
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+
+type PDFMultiCellOpt struct {
+	width             *float64
+	height            *float64
+	border            *PDFBorder
+	align             *PDFTextAlign
+	fill              *bool
+	fontNameOverride  *PDFFontFamily
+	fontStyleOverride *PDFFontStyle
+	fontSizeOverride  *float64
+	extraLn           *float64
+	x                 *float64
+}
+
+func NewPDFMultiCellOpt() *PDFMultiCellOpt {
+	return &PDFMultiCellOpt{}
+}
+
+func (opt *PDFMultiCellOpt) Width(v float64) *PDFMultiCellOpt {
+	opt.width = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Height(v float64) *PDFMultiCellOpt {
+	opt.height = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Border(v PDFBorder) *PDFMultiCellOpt {
+	opt.border = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Align(v PDFTextAlign) *PDFMultiCellOpt {
+	opt.align = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) FillBackground(v bool) *PDFMultiCellOpt {
+	opt.fill = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Font(fontName PDFFontFamily, fontStyle PDFFontStyle, fontSize float64) *PDFMultiCellOpt {
+	opt.fontNameOverride = &fontName
+	opt.fontStyleOverride = &fontStyle
+	opt.fontSizeOverride = &fontSize
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) FontName(v PDFFontFamily) *PDFMultiCellOpt {
+	opt.fontNameOverride = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) FontStyle(v PDFFontStyle) *PDFMultiCellOpt {
+	opt.fontStyleOverride = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) FontSize(v float64) *PDFMultiCellOpt {
+	opt.fontSizeOverride = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Bold() *PDFMultiCellOpt {
+	opt.fontStyleOverride = langext.Ptr(Bold)
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) Italic() *PDFMultiCellOpt {
+	opt.fontStyleOverride = langext.Ptr(Italic)
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) LnAfter(v float64) *PDFMultiCellOpt {
+	opt.extraLn = &v
+	return opt
+}
+
+func (opt *PDFMultiCellOpt) X(v float64) *PDFMultiCellOpt {
+	opt.x = &v
+	return opt
+}
+
+func (b *WPDFBuilder) MultiCell(txt string, opts ...*PDFMultiCellOpt) {
+
+	txtTR := b.tr(txt)
+
+	width := float64(0)
+	height := b.cellHeight
+	border := BorderNone
+	align := AlignLeft
+	fill := false
+	var fontNameOverride *PDFFontFamily
+	var fontStyleOverride *PDFFontStyle
+	var fontSizeOverride *float64
+	extraLn := float64(0)
+	var x *float64
+
+	for _, opt := range opts {
+		width = langext.Coalesce(opt.width, width)
+		height = langext.Coalesce(opt.height, height)
+		border = langext.Coalesce(opt.border, border)
+		align = langext.Coalesce(opt.align, align)
+		fill = langext.Coalesce(opt.fill, fill)
+		fontNameOverride = langext.CoalesceOpt(opt.fontNameOverride, fontNameOverride)
+		fontStyleOverride = langext.CoalesceOpt(opt.fontStyleOverride, fontStyleOverride)
+		fontSizeOverride = langext.CoalesceOpt(opt.fontSizeOverride, fontSizeOverride)
+		extraLn = langext.Coalesce(opt.extraLn, extraLn)
+		x = langext.CoalesceOpt(opt.x, x)
+	}
+
+	if fontNameOverride != nil || fontStyleOverride != nil || fontSizeOverride != nil {
+		oldFontName := b.fontName
+		oldFontStyle := b.fontStyle
+		oldFontSize := b.fontSize
+		newFontName := langext.Coalesce(fontNameOverride, oldFontName)
+		newFontStyle := langext.Coalesce(fontStyleOverride, oldFontStyle)
+		newFontSize := langext.Coalesce(fontSizeOverride, oldFontSize)
+		b.SetFont(newFontName, newFontStyle, newFontSize)
+		defer func() { b.SetFont(oldFontName, oldFontStyle, oldFontSize) }()
+	}
+
+	if x != nil {
+		b.b.SetX(*x)
+	}
+
+	b.b.MultiCell(width, height, txtTR, string(border), string(align), fill)
+
+	if extraLn != 0 {
+		b.b.Ln(extraLn)
+	}
+}

wpdf/wpdfRect.go

@@ -0,0 +1,126 @@
+package wpdf
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+
+type PDFRectOpt struct {
+	x         *float64
+	y         *float64
+	lineWidth *float64
+	drawColor *PDFColor
+	fillColor *PDFColor
+	radiusTL  *float64
+	radiusTR  *float64
+	radiusBR  *float64
+	radiusBL  *float64
+}
+
+func NewPDFRectOpt() *PDFRectOpt {
+	return &PDFRectOpt{}
+}
+
+func (opt *PDFRectOpt) X(v float64) *PDFRectOpt {
+	opt.x = &v
+	return opt
+}
+
+func (opt *PDFRectOpt) Y(v float64) *PDFRectOpt {
+	opt.y = &v
+	return opt
+}
+
+func (opt *PDFRectOpt) LineWidth(v float64) *PDFRectOpt {
+	opt.lineWidth = &v
+	return opt
+}
+
+func (opt *PDFRectOpt) DrawColor(cr, cg, cb int) *PDFRectOpt {
+	opt.drawColor = &PDFColor{R: cr, G: cg, B: cb}
+	return opt
+}
+
+func (opt *PDFRectOpt) DrawColorHex(c uint32) *PDFRectOpt {
+	opt.drawColor = &PDFColor{R: int((c >> 16) & 0xFF), G: int((c >> 8) & 0xFF), B: int((c >> 0) & 0xFF)}
+	return opt
+}
+
+func (opt *PDFRectOpt) FillColor(cr, cg, cb int) *PDFRectOpt {
+	opt.fillColor = &PDFColor{R: cr, G: cg, B: cb}
+	return opt
+}
+
+func (opt *PDFRectOpt) FillColorHex(c uint32) *PDFRectOpt {
+	opt.fillColor = &PDFColor{R: int((c >> 16) & 0xFF), G: int((c >> 8) & 0xFF), B: int((c >> 0) & 0xFF)}
+	return opt
+}
+
+func (opt *PDFRectOpt) Rounded(radius float64) *PDFRectOpt {
+	opt.radiusTL = &radius
+	opt.radiusTR = &radius
+	opt.radiusBR = &radius
+	opt.radiusBL = &radius
+	return opt
+}
+
+func (opt *PDFRectOpt) RadiusTL(radius float64) *PDFRectOpt {
+	opt.radiusTL = &radius
+	return opt
+}
+
+func (opt *PDFRectOpt) RadiusTR(radius float64) *PDFRectOpt {
+	opt.radiusTR = &radius
+	return opt
+}
+
+func (opt *PDFRectOpt) RadiusBL(radius float64) *PDFRectOpt {
+	opt.radiusBL = &radius
+	return opt
+}
+
+func (opt *PDFRectOpt) RadiusBR(radius float64) *PDFRectOpt {
+	opt.radiusBR = &radius
+	return opt
+}
+
+func (b *WPDFBuilder) Rect(w float64, h float64, styleStr PDFRectStyle, opts ...*PDFRectOpt) {
+	x := b.GetX()
+	y := b.GetY()
+	var lineWidth *float64
+	var drawColor *PDFColor
+	var fillColor *PDFColor
+	radiusTL := float64(0)
+	radiusTR := float64(0)
+	radiusBR := float64(0)
+	radiusBL := float64(0)
+
+	for _, opt := range opts {
+		x = langext.Coalesce(opt.x, x)
+		y = langext.Coalesce(opt.y, y)
+		lineWidth = langext.CoalesceOpt(opt.lineWidth, lineWidth)
+		drawColor = langext.CoalesceOpt(opt.drawColor, drawColor)
+		fillColor = langext.CoalesceOpt(opt.fillColor, fillColor)
+		radiusTL = langext.Coalesce(opt.radiusTL, radiusTL)
+		radiusTR = langext.Coalesce(opt.radiusTR, radiusTR)
+		radiusBR = langext.Coalesce(opt.radiusBR, radiusBR)
+		radiusBL = langext.Coalesce(opt.radiusBL, radiusBL)
+	}
+
+	if lineWidth != nil {
+		old := b.GetLineWidth()
+		b.SetLineWidth(*lineWidth)
+		defer func() { b.SetLineWidth(old) }()
+	}
+
+	if drawColor != nil {
+		oldR, oldG, oldB := b.GetDrawColor()
+		b.SetDrawColor(drawColor.R, drawColor.G, drawColor.B)
+		defer func() { b.SetDrawColor(oldR, oldG, oldB) }()
+	}
+
+	if fillColor != nil {
+		oldR, oldG, oldB := b.GetFillColor()
+		b.SetFillColor(fillColor.R, fillColor.G, fillColor.B)
+		defer func() { b.SetFillColor(oldR, oldG, oldB) }()
+	}
+
+	b.b.RoundedRectExt(x, y, w, h, radiusTL, radiusTR, radiusBR, radiusBL, string(styleStr))
+}