fix composition is not inheretance

Homework_3/cmd/findData/go.mod

@@ -0,0 +1,3 @@
+module gitea.zacksolutions.dev/Zakaria/find
+
+go 1.27.1

Homework_3/cmd/findData/xkcd-find.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+type xkcd struct {
+	Num        int    `json:"num"`
+	Day        string `json:"day"`
+	Month      string `json:"month"`
+	Year       string `json:"year"`
+	Title      string `json:"title"`
+	Transcript string `json:"transcript"`
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "No file was given")
+		os.Exit(-1)
+	}
+
+	filename := os.Args[1]
+	if len(os.Args) < 3 {
+		fmt.Fprintln(os.Stderr, "No search tags were given")
+		os.Exit(0)
+	}
+
+	var (
+		items []xkcd
+		terms []string
+		input io.ReadCloser
+		cnt   int
+		err   error
+	)
+
+	// okay so let's decode the file, get search terms and search
+
+	if input, err = os.Open(filename); err != nil {
+		fmt.Fprintf(os.Stderr, "Corrupt file: %s\n", err)
+		os.Exit(-1)
+	}
+	if err = json.NewDecoder(input).Decode(&items); err != nil {
+		fmt.Fprintf(os.Stderr, "Bad json Fromat: %s", err)
+		os.Exit(-1)
+	}
+
+	fmt.Fprintf(os.Stderr, "read %d comics\n", len(items))
+	for _, t := range os.Args[2:] {
+		terms = append(terms, strings.ToLower(t))
+	}
+
+outer:
+
+	for _, item := range items {
+		title := strings.ToLower(item.Title)
+		transcript := strings.ToLower(item.Transcript)
+
+		for _, term := range terms {
+			if !strings.Contains(title, term) && !strings.Contains(transcript, term) {
+				continue outer
+			}
+		}
+		fmt.Printf("https://xkcd.com/%d/%s/%s/%s\n", item.Num, item.Day, item.Month, item.Year)
+		cnt++
+	}
+
+	fmt.Fprintf(os.Stderr, "found %d comics\n", cnt)
+}

Homework_3/cmd/loadData/go.mod

@@ -0,0 +1,3 @@
+module gitea.zacksolutions.dev/Zakaria
+
+go 1.27.1

Homework_3/cmd/loadData/xkcd-load.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+)
+
+func getComic(i int) []byte {
+	url := fmt.Sprintf("https://xkcd.com/%d/info.0.json", i)
+	resp, err := http.Get(url)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Can't reach: %s", err)
+		os.Exit(-1)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+
+		fmt.Fprintf(os.Stderr, "Skipping %d: got %d\n", i, resp.StatusCode)
+		return nil
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "invalid body %s\n", err)
+	}
+	return body
+}
+
+func main() {
+	var (
+		output io.WriteCloser = os.Stdout
+		err    error
+		cnt    int
+		fails  int
+		data   []byte
+	)
+
+	if len(os.Args) > 1 {
+		output, err = os.Create(os.Args[1])
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(-1)
+		}
+
+		defer output.Close()
+
+	}
+	fmt.Fprint(output, "[")
+	defer fmt.Fprint(output, "]")
+
+	for i := 1; fails < 2; i++ {
+		if data = getComic(i); data == nil {
+			fails++
+			continue
+		}
+		if cnt > 0 {
+			fmt.Fprint(output, ",")
+		}
+
+		_, err := io.Copy(output, bytes.NewBuffer(data))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "STOPPED: %s\n", err)
+			os.Exit(-1)
+		}
+		fails = 0
+		cnt++
+	}
+	fmt.Fprintf(os.Stderr, "Read %d comics\n", cnt)
+}

composition/go.mod

@@ -0,0 +1,3 @@
+module gitea.zacksolutions.dev/Zakaria/compositions
+
+go 1.27.1

composition/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"fmt"
+	"path/filepath"
+)
+
+type Pair struct {
+	Path string
+	Hash string
+}
+
+func (p Pair) String() string {
+	return fmt.Sprintf("Hash of %s is %s", p.Path, p.Hash)
+}
+
+type PairWithLength struct {
+	Pair
+	Length int
+}
+
+func (p PairWithLength) String() string {
+	return fmt.Sprintf("Hash of %s is %s; length %d", p.Path, p.Hash, p.Length)
+}
+
+func (p Pair) Filename() string {
+	return filepath.Base(p.Path)
+}
+
+type Filenamer interface {
+	Filename() string
+}
+
+func main() {
+	p := Pair{"/urs", "0xfdfe"}
+	pl := PairWithLength{Pair{"/usr/bin", "0xdead"}, 13643532}
+
+	var fn Filenamer = PairWithLength{Pair{"/usr/bin", "0xdead"}, 13643532}
+
+	fmt.Println(p)
+	fmt.Println(fn)
+	fmt.Println(pl.Path)
+	fmt.Println(p.Filename())
+}

go.work

@@ -4,6 +4,8 @@ use (
 	./Composite_Types
 	./For_If_Switch
 	./Homework_1
+	./Homework_3/cmd/findData
+	./Homework_3/cmd/loadData
 	./courses
 	./formatIO
 	./functions