func (t *SvgTextT) widths(font string) (r *cmapt.CMapT) {
if t.fontw == nil {
t.fontw = make(map[string]*cmapt.CMapT)
} else if r, ok := t.fontw[font]; ok {
return r
}
// initialize like for Courier.
r = cmapt.New()
r.AddDef(0, 256, 600*WIDTH_DENSITY/1000)
if t.fonts == nil {
t.fonts = t.Pdf.PageFonts(t.Pdf.Pages()[t.Page])
if t.fonts == nil {
return
}
}
if dr, ok := t.fonts[font]; ok {
d := t.Pdf.Dic(dr)
fc, ok := d["/FirstChar"]
if !ok {
return
}
lc, ok := d["/LastChar"]
if !ok {
return
}
wd, ok := d["/Widths"]
if !ok {
return
}
p := strm.Int(string(fc), 1)
q := strm.Int(string(lc), 1)
a := t.Pdf.Arr(wd)
for k := p; k < q; k++ {
r.Add(k, strm.Int(string(a[k-p]), WIDTH_DENSITY/1000))
}
}
return
}
func main() {
if len(os.Args) == 1 || len(os.Args) > 3 {
complain("")
}
page := 0
if len(os.Args) > 2 {
page = strm.Int(os.Args[2], 1) - 1
if page < 0 {
complain("Bad page!\n\n")
}
}
pd := pdfread.Load(os.Args[1])
if pd == nil {
complain("Could not load pdf file!\n\n")
}
fmt.Printf("%s", svg.Page(pd, page))
}
// hello world, the web server
func HelloServer(c *http.Conn, req *http.Request) {
c.SetHeader("Content-Type", "image/svg+xml; charset=utf-8")
page := strm.Int(req.URL.RawQuery, 1) - 1
io.WriteString(c, string(svg.Page(pd, page)))
}