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added number of colors

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This commit is contained in:
Antoni Sawicki 2019-06-02 17:06:41 -07:00
parent a8cc1b6b4e
commit 791e87d7ed
1 changed files with 17 additions and 12 deletions
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29
wrp.go
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@ -83,30 +83,35 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
if s < 0.1 { if s < 0.1 {
s = 1.0 s = 1.0
} }
c, _ := strconv.ParseInt(req.FormValue("c"), 10, 64)
if c < 2 || c > 256 {
c = 256
}
log.Printf("%s Page Reqest for url=\"%s\" [%s]\n", req.RemoteAddr, u, req.URL.Path) log.Printf("%s Page Reqest for url=\"%s\" [%s]\n", req.RemoteAddr, u, req.URL.Path)
out.Header().Set("Content-Type", "text/html") out.Header().Set("Content-Type", "text/html")
fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version) fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version)
fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", u) fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", u)
fmt.Fprintf(out, "<FORM ACTION=\"/\">URL/Search: <INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"40\">", u) fmt.Fprintf(out, "<FORM ACTION=\"/\">URL/Search: <INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"20\">", u)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\"><P>\n") fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\"> \n")
fmt.Fprintf(out, "Page:<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Prev\"> \n")
fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"p\" VALUE=\"%d\" SIZE=\"2\"> \n", p)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Next\"> <P>\n")
fmt.Fprintf(out, "ISMAP:<INPUT TYPE=\"CHECKBOX\" NAME=\"i\" %s> \n", istr) fmt.Fprintf(out, "ISMAP:<INPUT TYPE=\"CHECKBOX\" NAME=\"i\" %s> \n", istr)
fmt.Fprintf(out, "Width:<INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w) fmt.Fprintf(out, "Width:<INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w)
fmt.Fprintf(out, "Height:<INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", h) fmt.Fprintf(out, "Height:<INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", h)
fmt.Fprintf(out, "Scale:<INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s) fmt.Fprintf(out, "Scale:<INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s)
fmt.Fprintf(out, "Page:<INPUT TYPE=\"HIDDEN\" NAME=\"p\" VALUE=\"%d\"> \n", p) fmt.Fprintf(out, "Colors:<INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", c)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Prev\"> %d \n", p)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Next\"> \n")
fmt.Fprintf(out, "</FORM><P>\n") fmt.Fprintf(out, "</FORM><P>\n")
if len(u) > 4 { if len(u) > 4 {
if strings.HasPrefix(u, "http") { if strings.HasPrefix(u, "http") {
capture(u, w, h, s, p, i, req.RemoteAddr, out) capture(u, w, h, s, int(c), p, i, req.RemoteAddr, out)
} else { } else {
capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, p, i, req.RemoteAddr, out) capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, int(c), p, i, req.RemoteAddr, out)
} }
} else { } else {
fmt.Fprintf(out, "No URL or search query specified") fmt.Fprintf(out, "No URL or search query specified")
} }
fmt.Fprintf(out, "\n<P><A HREF=\"/?url=https://github.com/tenox7/wrp/&w=%d&h=%d&s=%1.2f%s\">Web Rendering Proxy Version %s</A></BODY>\n</HTML>\n", w, h, s, ion, version) fmt.Fprintf(out, "\n<P><A HREF=\"/?url=https://github.com/tenox7/wrp/&w=%d&h=%d&s=%1.2f&c=%d%s\">Web Rendering Proxy Version %s</A></BODY>\n</HTML>\n", w, h, s, c, ion, version)
} }
func imgServer(out http.ResponseWriter, req *http.Request) { func imgServer(out http.ResponseWriter, req *http.Request) {
@ -152,7 +157,7 @@ func haltServer(out http.ResponseWriter, req *http.Request) {
os.Exit(0) os.Exit(0)
} }
func capture(gourl string, w int64, h int64, s float64, p int64, i bool, c string, out http.ResponseWriter) { func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool, c string, out http.ResponseWriter) {
var nodes []*cdp.Node var nodes []*cdp.Node
ctxx := chromedp.FromContext(ctx) ctxx := chromedp.FromContext(ctx)
var pngbuf []byte var pngbuf []byte
@ -191,7 +196,7 @@ func capture(gourl string, w int64, h int64, s float64, p int64, i bool, c strin
return return
} }
gifbuf.Reset() gifbuf.Reset()
err = gif.Encode(&gifbuf, img, nil) err = gif.Encode(&gifbuf, img, &gif.Options{NumColors: co})
if err != nil { if err != nil {
log.Printf("%s Failed to encode GIF: %s\n", c, err) log.Printf("%s Failed to encode GIF: %s\n", c, err)
fmt.Fprintf(out, "<BR>Unable to encode GIF:<BR>%s<BR>\n", err) fmt.Fprintf(out, "<BR>Unable to encode GIF:<BR>%s<BR>\n", err)
@ -207,7 +212,7 @@ func capture(gourl string, w int64, h int64, s float64, p int64, i bool, c strin
base, _ := url.Parse(loc) base, _ := url.Parse(loc)
if i { if i {
fmt.Fprintf(out, "<A HREF=\"%s\"><IMG SRC=\"%s\" ALT=\"wrp\" ISMAP></A>", mappath, imgpath) fmt.Fprintf(out, "<A HREF=\"%s\"><IMG SRC=\"%s\" ALT=\"wrp\" ISMAP></A>", mappath, imgpath)
is = append(is, Ismap{xmin: -1, xmax: -1, ymin: -1, ymax: -1, url: fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f&i=on", loc, w, h, s)}) is = append(is, Ismap{xmin: -1, xmax: -1, ymin: -1, ymax: -1, url: fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f&c=%d&i=on", loc, w, h, s, co)})
ion = "&i=on" ion = "&i=on"
} else { } else {
fmt.Fprintf(out, "<IMG SRC=\"%s\" ALT=\"wrp\" USEMAP=\"#map\">\n<MAP NAME=\"map\">\n", imgpath) fmt.Fprintf(out, "<IMG SRC=\"%s\" ALT=\"wrp\" USEMAP=\"#map\">\n<MAP NAME=\"map\">\n", imgpath)
@ -222,7 +227,7 @@ func capture(gourl string, w int64, h int64, s float64, p int64, i bool, c strin
if err != nil { if err != nil {
continue continue
} }
target := fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f%s", tgt, w, h, s, ion) // no page# here target := fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f&c=%d%s", tgt, w, h, s, co, ion) // no page# here
if len(b.Content) > 6 && len(target) > 7 { if len(b.Content) > 6 && len(target) > 7 {
if i { if i {