Getting ready for AppImage downloading

appimg/Proc.go

@@ -0,0 +1,60 @@
+//Package appimg is to download and update AppImages for LinuxPA.
+//Converted from github.com/CalebQ42/bbConvert
+package appimg
+
+import "reflect"
+
+//Convert converts the input string. Only returns <a> tags
+func Convert(in string) (out []Tag) {
+	for i := 0; i < len(in); i++ {
+		v := in[i]
+		if v == '<' {
+			for j := i; j < len(in); j++ {
+				val := in[j]
+				if val == '>' {
+					var tmp Tag
+					tmp.process(in[i+1 : j+1])
+					if !tmp.end {
+						tmp.index[0] = i
+						tmp.index[1] = j
+						nd := fndend(tmp, in[j+1:])
+						if !reflect.DeepEqual(nd, Tag{}) && tmp.typ == "a" {
+							out = append(out, tmp)
+						}
+					}
+					break
+				}
+			}
+		}
+	}
+	return
+}
+
+func fndend(fnt Tag, area string) Tag {
+	var count int
+	for i, v := range area {
+		if v == '<' {
+			for j, val := range area[i:] {
+				if val == '>' {
+					var tmp Tag
+					tmp.process(area[i+1 : i+j+1])
+					if tmp.typ == fnt.typ {
+						if tmp.end {
+							if count == 0 {
+								tmp.index[0] = fnt.index[1] + 1 + i
+								tmp.index[1] = fnt.index[1] + j + i + 1
+								return tmp
+							}
+							count--
+							break
+						} else {
+							count++
+							break
+						}
+					}
+				}
+			}
+		}
+	}
+	return Tag{}
+}