add working dir

build_lib.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 APP_NAME="libgofunc"
-VERSION="${1:-v0.1.5}"
+VERSION="${1:-v0.1.7}"
 OUTPUT_DIR="../assets"
 BUILD_DIR="../build"
 

img.go

@@ -26,6 +26,7 @@ import (
 )
 import (
 	"log"
+	"path"
 	"strconv"
 
 	"golang.org/x/text/language"
@@ -46,11 +47,12 @@ const (
 var fontFs embed.FS
 
 //export GenPNG
-func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char) *C.char {
+func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char, workingDirC *C.char) *C.char {
 	canvasWidth := int(width)
 	goPath := C.GoString(outputPath)
 	goPayload := C.GoString(payload)
 	goTmpl := C.GoString(tmpl)
+	workingDir := C.GoString(workingDirC)
 
 	data := make(map[string]interface{})
 	err := json.Unmarshal([]byte(goPayload), &data)
@@ -91,7 +93,10 @@ func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char) *C.c
 	dc.SetFontFace(*face)
 
 	y := 0
-	renderNode(dc, canvasWidth, body, &y, *face)
+	err = renderNode(dc, canvasWidth, body, &y, *face, workingDir)
+	if err != nil {
+		return NewErr(err)
+	}
 
 	err = dc.SavePNG(goPath)
 	if err != nil {
@@ -102,8 +107,8 @@ func GenPNG(width C.int, outputPath *C.char, payload *C.char, tmpl *C.char) *C.c
 	return NewOk(nil)
 }
 
-func GenImg(width int, outputPath, payload, tmpl string) string {
-	result := GenPNG(C.int(width), C.CString(outputPath), C.CString(payload), C.CString(tmpl))
+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))
 	r := C.GoString(result)
 	return r
 }
@@ -125,7 +130,7 @@ func renderTemplate(tmp string, data map[string]interface{}) (string, error) {
 	return buf.String(), nil
 }
 
-func renderNode(dc *gg.Context, canvasWidth int, n *Node, y *int, face font.Face) {
+func renderNode(dc *gg.Context, canvasWidth int, n *Node, y *int, face font.Face, workingDir string) error {
 	before := *y
 	if n.Style.PaddingTop > 0 {
 		*y += int(n.Style.PaddingTop)
@@ -146,7 +151,9 @@ func renderNode(dc *gg.Context, canvasWidth int, n *Node, y *int, face font.Face
 	case "hr":
 		renderLine(dc, n, canvasWidth, y)
 	case "img":
-		drawImage(dc, n, y)
+		if err := drawImage(dc, n, y, workingDir); err != nil {
+			return err
+		}
 	case "table":
 		renderTable(dc, canvasWidth, n, y, face)
 	}
@@ -156,8 +163,9 @@ func renderNode(dc *gg.Context, canvasWidth int, n *Node, y *int, face font.Face
 	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)
+		renderNode(dc, canvasWidth, c, y, face, workingDir)
 	}
+	return nil
 }
 
 func drawTextBlock(dc *gg.Context, n *Node, canvasWidth int, size float64, y *int, face font.Face) {
@@ -194,14 +202,18 @@ func wordWrap(dc *gg.Context, text string, maxWidth int) []string {
 	return lines
 }
 
-func drawImage(dc *gg.Context, n *Node, y *int) {
+func drawImage(dc *gg.Context, n *Node, y *int, workingDir string) error {
 	src := n.getSrc()
-	file, err := os.Open(src)
+	s := path.Join(workingDir, src)
+	file, err := os.Open(s)
 	if err != nil {
-		return
+		return fmt.Errorf("open file src: '%s', working directory: '%s', error : %s", src, workingDir, err.Error())
 	}
 	defer file.Close()
-	img, _, _ := image.Decode(file)
+	img, _, err := image.Decode(file)
+	if err != nil {
+		return err
+	}
 	padding := n.Style.PaddingLeft
 	h := n.Style.Height
 	if n.Style.Width > 0 {
@@ -224,6 +236,7 @@ func drawImage(dc *gg.Context, n *Node, y *int) {
 		dc.DrawImage(img, int(padding), *y)
 		*y += img.Bounds().Dy()
 	}
+	return nil
 }
 
 func renderTable(dc *gg.Context, canvasWidth int, table *Node, y *int, face font.Face) {