Updated up to release of 10/09/29

01_hello_world/Makefile

@@ -1,4 +1,4 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
 TARG=hello_world
 GOFILES=hello_world.go

02_functions/Makefile

@@ -1,4 +1,4 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
 TARG=functions
 GOFILES=functions.go

03_packages_basics/Makefile

@@ -1,36 +1,10 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
-.SUFFIXES: .go .$O
+TARG=factorial_example
 
-OBJS=factorial.$O main.$O 
-TARG=factorial
+GOFILES=\
+  main.go\
 
-GOFILES=factorial.go
+include $(GOROOT)/src/Make.cmd
 
-factorial: $(OBJS)
-	$(LD) -o factorial $(OBJS)
 
-clean:
-	rm -f $(OBJS) factorial
-
-.go.$O:
-	$(GC) $<
-
-test:
-	gotest
-
-testpackage-clean:
-	rm -f _test/$(TARG).a _gotest_.$O
-
-testpackage: _test/$(TARG).a
-
-_test/$(TARG).a: _gotest_.$O $(OFILES)
-	@mkdir -p _test/$(dir)
-	rm -f _test/$(TARG).a
-	gopack grc $@ _gotest_.$O $(OFILES)
-
-_gotest_.$O: $(GOFILES) $(GOTESTFILES) $(PREREQ)
-	$(GC) -o $@ $(GOFILES) $(GOTESTFILES)
-
-importpath:
-	@echo $(TARG)

03_packages_basics/factorial/Makefile

@@ -0,0 +1,14 @@
+include $(GOROOT)/src/Make.inc
+
+TARG=factorial
+GOFMT=gofmt -spaces=true -tabindent=false -tabwidth=4
+
+GOFILES=\
+  factorial.go\
+
+include $(GOROOT)/src/Make.pkg
+
+format:
+	${GOFMT} -w factorial.go
+	${GOFMT} -w main.go
+

03_packages_basics/factorial/factorial.go

@@ -0,0 +1,12 @@
+package factorial
+
+// Functions those start from uppercase are pulic and would be imported 
+// to access from other packages
+func Calc( n int ) (rv int) {
+  if n == 0 {
+    rv = 1
+  } else {
+    rv = n * Calc( n - 1 )
+  }
+  return rv
+}

03_packages_basics/factorial/factorial_test.go

@@ -0,0 +1,19 @@
+package factorial_test
+
+import (
+  "testing";
+  "factorial";
+)
+
+func TestCalc(t *testing.T){
+  if factorial.Calc( 5 ) != 120 {
+    t.Errorf("Error calculation factorial\nExpected 120 was %d\n", factorial.Calc( 5 ) )
+  }
+  if factorial.Calc( 0 ) != 1 {
+    t.Errorf("Error calculation factorial\nExpected 1 was %d\n", factorial.Calc( 0 ) )
+  }
+  if factorial.Calc( 1 ) != 1 {
+    t.Errorf("Error calculation factorial\nExpected 1 was %d\n", factorial.Calc( 1 ) )
+  }
+}
+

03_packages_basics/main.go

@@ -1,7 +1,7 @@
 package main
 
 import formated_output "fmt"
-import "./factorial" 
+import "factorial" 
 
 func main() {
     formated_output.Printf( "Packeges samples \n");

04_arrays/Makefile

@@ -1,4 +1,4 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
 TARG=arrays
 GOFILES=arrays.go

05_slices/Makefile

@@ -1,4 +1,4 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
 TARG=slices
 GOFILES=slices.go

06_maps/Makefile

@@ -1,4 +1,4 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
 TARG=maps
 GOFILES=maps.go

07_structs/Makefile

@@ -1,16 +1,7 @@
-include $(GOROOT)/src/Make.$(GOARCH)
+include $(GOROOT)/src/Make.inc
 
-.SUFFIXES: .go .$O
-
-OBJS=super_point.$O structs.$O 
 TARG=structs
 
-structs: $(OBJS)
-	$(LD) -o structs $(OBJS)
-
-clean:
-	rm -f $(OBJS) structs
-
-.go.$O:
-	$(GC) $<
-
+GOFILES=structs.go super_point.go
+
+include $(GOROOT)/src/Make.cmd

07_structs/structs.go

@@ -2,7 +2,6 @@
 package main
 
 import fmt "fmt" 
-import super_point "./super_point" 
 
 // struct type declaretion
 type Point struct { x, y float };
@@ -59,7 +58,7 @@ func main( ){
 
   // exporting structs from other packages
   // struct fields visibility
-  var spoint super_point.SuperPoint;
+  var spoint SuperPoint;
   spoint.X = 10;
   spoint.Y = 15;  
   fmt.Println( spoint.X, spoint.Y );

07_structs/super_point.go

@@ -1,4 +1,4 @@
-package super_point
+package main
 
 // type for export should start with Uppercase
 type SuperPoint struct { 

10_http/Makefile

@@ -0,0 +1,11 @@
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+include $(GOROOT)/src/Make.inc
+
+TARG=10_http
+GOFILES=\
+	http.go\
+
+include $(GOROOT)/src/Make.cmd

10_http/http.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+    "flag"
+    "http"
+    "io"
+    "log"
+    "template"
+)
+
+var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
+var fmap = template.FormatterMap{
+    "html": template.HTMLFormatter,
+    "url+html": UrlHtmlFormatter,
+}
+var templ = template.MustParse(templateStr, fmap)
+
+func main() {
+    flag.Parse()
+    http.Handle("/", http.HandlerFunc(QR))
+    err := http.ListenAndServe(*addr, nil)
+    if err != nil {
+        log.Exit("ListenAndServe:", err)
+    }
+}
+
+func QR(w http.ResponseWriter, req *http.Request) {
+    templ.Execute(req.FormValue("s"), w)
+}
+
+func UrlHtmlFormatter(w io.Writer, v interface{}, fmt string) {
+    template.HTMLEscape(w, []byte(http.URLEscape(v.(string))))
+}
+
+
+const templateStr = `
+<html>
+<head>
+<title>QR Link Generator</title>
+</head>
+<body>
+{.section @}
+<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={@|url+html}"
+/>
+<br>
+{@|html}
+<br>
+<br>
+{.end}
+<form action="/" name=f method="GET"><input maxLength=1024 size=70
+name=s value="" title="Text to QR Encode"><input type=submit
+value="Show QR" name=qr>
+</form>
+</body>
+</html>
+`
+