v0.1.9 - add <cut> element

add date format
2026-07-06 16:11:31 +06:30 · 2026-06-04 11:16:13 +06:30
6 changed files with 109 additions and 19 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,4 @@ assets
 libgofunc
 libgo
 cmd/out.png
+cmd/*.png
--- a/build_lib.sh
+++ b/build_lib.sh
@@ -1,7 +1,7 @@
 #!/bin/bash

 APP_NAME="libgofunc"
-VERSION="${1:-v0.1.7}"
+VERSION="${1:-v0.1.9}"
 OUTPUT_DIR="../assets"
 BUILD_DIR="../build"

--- a/cmd/main.go
+++ b/cmd/main.go
@@ -22,11 +22,12 @@ func main() {
 	const temp = `
 <img src="../assets/logo.png" style="width:230;height:200;padding-left:130px;padding-top:30px"/>
 <h1 style="padding-left:150px">{{.station.name}}</h1>
+<p style="padding-left:0px;font-size:18">စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ</p>

 <p style="padding-left:0px;font-size:18">Address: မင်္ဂလာပါ {{(index .sales 0).salePerson}}</p>
 <p style="padding-left:0px">Receipt: RCPT001</p>
 <p style="padding-left:0px">Phone: 0977777777</p>
-<p style="padding-left:0px">Date: 4 Jan 2026 15:38:38</p>
+<p style="padding-left:0px">Date: {{formatDateFromSec (index .sales 0).timeSec "2006-01-02 15:04:05"}}</p>
 <p style="padding-left:0px">Car No.: 3J/3883</p>
 <p style="padding-left:0px">Casher: မနှင်းနှင်း</p>
 <p style="padding-left:0px">MOP: B2B</p>
@@ -57,8 +58,48 @@ func main() {

 <p style="padding-left:0px;padding-top:50px;">
 စက်သုံးဆီ အရေအတွက် နှင့် အရည်အသွေးစျေးနှုန်းများ အားသံသယရှိပါက ph 09450539099, 09765421033, 09765421029 သို့တိုင်ကြား     နိုင်ပါသည်။</p>
+<cut>
+<img src="../assets/logo.png" style="width:230;height:200;padding-left:130px;padding-top:30px"/>
+<h1 style="padding-left:150px">{{.station.name}}</h1>
+<p style="padding-left:0px;font-size:18">စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ စက်သုံးဆီဆိုင်လိပ်စာ</p>
+
+<p style="padding-left:0px;font-size:18">Address: မင်္ဂလာပါ {{(index .sales 0).salePerson}}</p>
+<p style="padding-left:0px">Receipt: RCPT001</p>
+<p style="padding-left:0px">Phone: 0977777777</p>
+<p style="padding-left:0px">Date: {{formatDateFromSec (index .sales 0).timeSec "2006-01-02 15:04:05"}}</p>
+<p style="padding-left:0px">Car No.: 3J/3883</p>
+<p style="padding-left:0px">Casher: မနှင်းနှင်း</p>
+<p style="padding-left:0px">MOP: B2B</p>
+<p style="padding-left:0px">Tier: 1</p>
+<p style="padding-left:0px">Deal No.: RR</p>
+<hr style="height:1px;padding-left:0px;padding-right:10px;padding-bottom:10px"/>
+
+<table style="padding-left:0px;padding-bottom:10px;border:0px;font-size:16px;border:0px;">
+<tr>
+<th style="width:120">Item</th>
+<th style="width:50">Pump</th>
+<th>Price</th>
+<th>Liter</th>
+<th>Gallon</th>
+<th>Amount</th>
+</tr>
+{{range .sales}}
+<tr>
+	<td>{{.product}}</td>
+	<td>{{.fpId}}</td>
+	<td>{{.price}}</td>
+	<td>{{.volume}}</td>
+	<td>{{.volume}}</td>
+	<td>{{.amount}}</td>
+</tr>
+{{end}}
+</table>
+
+<p style="padding-left:0px;padding-top:50px;">
+စက်သုံးဆီ အရေအတွက် နှင့် အရည်အသွေးစျေးနှုန်းများ အားသံသယရှိပါက ph 09450539099, 09765421033, 09765421029 သို့တိုင်ကြား     နိုင်ပါသည်။</p>
+
 `
-	result := libgofunc.GenImg(550, "./out.png", payload, temp, "./")
+	result := libgofunc.GenImg(550, "./", payload, temp, "./")
 	fmt.Println("Result:", result)
 	// PrintImg(C.CString("usb:/dev/usb/lp1"), C.CString("build/out.png"))
 	// libgofunc.Print("int:/dev/bus/usb/001/046", "./out.png")
--- a/go.mod
+++ b/go.mod
@@ -12,5 +12,6 @@ require (

 require (
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/google/uuid v1.6.0
 	golang.org/x/text v0.35.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@ github.com/fogleman/gg v1.3.0 h1:/7zJX8F6AaYQc57WQCyN9cAIz+4bCJGO9B+dyW29am8=
 github.com/fogleman/gg v1.3.0/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/kenshaw/escpos v0.0.0-20221114190919-df06b682a8fc h1:4JwmN2Scz1vR+hfSxkdy2IE/DzxX2Cftm2lhWHyN0k0=
 github.com/kenshaw/escpos v0.0.0-20221114190919-df06b682a8fc/go.mod h1:M+GIBmg2MqaSWIJrXCZS+/wRFbr9fOguRz3SHn8DRPE=
 golang.org/x/image v0.38.0 h1:5l+q+Y9JDC7mBOMjo4/aPhMDcxEptsX+Tt3GgRQRPuE=
--- a/img.go
+++ b/img.go
@@ -28,7 +28,9 @@ import (
 	"log"
 	"path"
 	"strconv"
+	"time"

+	"github.com/google/uuid"
 	"golang.org/x/text/language"
 	"golang.org/x/text/message"
 )
@@ -47,9 +49,9 @@ const (
 var fontFs embed.FS

 //export GenPNG
-func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char, workingDirC *C.char) *C.char {
+func GenPNG(width C.int, outDir *C.char, payload *C.char, tmpl *C.char, workingDirC *C.char) *C.char {
 	canvasWidth := int(width)
-	goPath := C.GoString(outputPath)
+	goOutDir := C.GoString(outDir)
 	goPayload := C.GoString(payload)
 	goTmpl := C.GoString(tmpl)
 	workingDir := C.GoString(workingDirC)
@@ -66,14 +68,27 @@ func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char, work
 	}

 	htmlStr = uni2zg(htmlStr)
+	htmls := strings.Split(htmlStr, "<cut>")
+	result := make([]string, 0)
+	for _, html := range htmls {
+		out, err := GenPng(canvasWidth, goOutDir, html, workingDir)
+		if err != nil {
+			return NewErr(err)
+		}
+		result = append(result, out)
+	}
+	return NewOk(result)
+}
+
+func GenPng(canvasWidth int, outDir string, htmlStr string, workingDir string) (string, error) {
 	root, err := html.Parse(strings.NewReader(htmlStr))
 	if err != nil {
-		return NewErr(err)
+		return "", err
 	}

 	face, err := LoadFont(defalutFontSize)
 	if err != nil {
-		return NewErr(err)
+		return "", err
 	}

 	// First pass: compute required height
@@ -95,27 +110,27 @@ func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char, work
 	y := 0
 	err = renderNode(dc, canvasWidth, body, &y, *face, workingDir)
 	if err != nil {
-		return NewErr(err)
+		return "", err
 	}

-	err = dc.SavePNG(goPath)
+	outPath := path.Join(outDir, uuid.NewString()+".png")
+	err = dc.SavePNG(outPath)
 	if err != nil {
-		return NewErr(err)
+		return "", err
 	}
-
-	// PrintReceipt(goPath)
-	return NewOk(nil)
+	return outPath, nil
 }

-func GenImg(width int, outputPath, payload, tmpl, workingDir string) string {
-	result := GenPNG(C.int(width), C.CString(outputPath), C.CString(payload), C.CString(tmpl), C.CString(workingDir))
+func GenImg(width int, outputDir, payload, tmpl, workingDir string) string {
+	result := GenPNG(C.int(width), C.CString(outputDir), C.CString(payload), C.CString(tmpl), C.CString(workingDir))
 	r := C.GoString(result)
 	return r
 }

 var funcMap = template.FuncMap{
-	"formatNumber": FormatNumber,
-	"div":          Div,
+	"formatNumber":      FormatNumber,
+	"div":               Div,
+	"formatDateFromSec": formatDateFromSec,
 }

 func renderTemplate(tmp string, data map[string]interface{}) (string, error) {
@@ -160,7 +175,8 @@ func renderNode(dc *gg.Context, canvasWidth int, n *Node, y *int, face font.Face
 	if n.Style.PaddingBottom > 0 {
 		*y += int(n.Style.PaddingBottom)
 	}
-	log.Printf("render %s y, y', height:  %d, %d, %d\n", n.Tag, before, *y, *y-before)
+	_ = before
+	// log.Printf("render %s y, y', height:  %d, %d, %d\n", n.Tag, before, *y, *y-before)

 	for _, c := range n.Children {
 		renderNode(dc, canvasWidth, c, y, face, workingDir)
@@ -451,7 +467,7 @@ func nodeHeight(n *html.Node, dc *gg.Context, canvasWidth int, xPadding, yPaddin
 			h = implicit
 		}
 		y += h
-		log.Printf("nodeHeight %s height: %d, \n", n.Data, y)
+		// log.Printf("nodeHeight %s height: %d, \n", n.Data, y)
 	}
 	return y
 }
@@ -518,3 +534,32 @@ func convertToFloat64(v any) float64 {
 		return 0
 	}
 }
+
+func formatDateFromSec(input any, layout string) string {
+	var sec int64
+	switch v := input.(type) {
+	case int64:
+		sec = v
+	case int:
+		sec = int64(v)
+	case float64:
+		sec = int64(v)
+	case float32:
+		sec = int64(v)
+	case string:
+		parsed, err := strconv.ParseInt(v, 10, 64)
+		if err != nil {
+			if parsedFloat, errFloat := strconv.ParseFloat(v, 64); errFloat == nil {
+				sec = int64(parsedFloat)
+			} else {
+				return fmt.Sprintf("[Error: invalid time string %q]", v)
+			}
+		} else {
+			sec = parsed
+		}
+	default:
+		return "[Error: unsupported time type]"
+	}
+	t := time.UnixMilli(sec * 1000)
+	return t.Format(layout)
+}
Author	SHA1	Message	Date
sainw	8a23c7037f	v0.1.9 - add <cut> element	2026-07-06 16:11:31 +06:30
sainw	29ec943d13	add date format	2026-06-04 11:16:13 +06:30