91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
package gopher
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import (
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"strings"
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"fmt"
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)
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//------------------------------------------------\\
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// + + + T Y P E S + + + \\
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//--------------------------------------------------\\
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// The view struct represents a gopher page. It contains
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// the page content as a string slice, a list of link URLs
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// as string slices, and the Url struct representing the page.
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type View struct {
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Content []string
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Links []string
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Address Url
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}
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//------------------------------------------------\\
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// + + + R E C E I V E R S + + + \\
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//--------------------------------------------------\\
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// The "ParseMap" receiver is called by a view struct. It
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// checks if the view is for a gophermap. If not,it does
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// nothing. If so, it parses the gophermap into comment lines
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// and link lines. For link lines it adds a link to the links
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// slice and changes the content value to just the printable
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// string plus a gophertype indicator and a link number that
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// relates to the link position in the links slice. This
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// receiver does not return anything.
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func (v *View) ParseMap() {
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if v.Address.Gophertype == "1" || v.Address.Gophertype == "7" {
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for i, e := range v.Content {
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e = strings.Trim(e, "\r\n")
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line := strings.Split(e,"\t")
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var title string
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if len(line[0]) > 1 {
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title = line[0][1:]
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} else {
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title = ""
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}
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if len(line[0]) > 0 && string(line[0][0]) == "i" {
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v.Content[i] = " " + string(title)
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continue
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} else if len(line) >= 4 {
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fulllink := fmt.Sprintf("%s:%s/%s%s", line[2], line[3], string(line[0][0]), line[1])
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v.Links = append(v.Links, fulllink)
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linktext := fmt.Sprintf("(%s) %2d %s", GetType(string(line[0][0])), len(v.Links), title)
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v.Content[i] = linktext
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}
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}
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v.Content = v.Content[: len(v.Content) - 1]
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}
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}
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// The "Display" receiver is called on a view struct.
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// It prints the content, line by line, of the View.
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// This receiver does not return anything.
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func (v View) Display() {
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fmt.Println()
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for _, el := range v.Content {
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fmt.Println(el)
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}
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}
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//------------------------------------------------\\
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// + + + F U N C T I O N S + + + \\
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//--------------------------------------------------\\
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// Constructor function for View struct.
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// This is used to initialize a View with
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// a Url struct, links, and content. It takes
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// a Url struct and a content []string and returns
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// a View (NOT a pointer to a View).
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func MakeView(url Url, content []string) View {
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v := View{content, make([]string, 0), url}
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v.ParseMap()
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return v
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}
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