go gen improvements (#524)

Remove the "gen" directory and move directives_generate.go out of it.
Add a build ignore tag so it isn't build by default. Cleanup the go gen
invocations so there are not seen as package docs.

Simplify the code a bit and don't run go gen twice.

1 files changed, 0 insertions, 116 deletions

diff --git a/gen/directives_generate.go b/gen/directives_generate.go
deleted file mode 100644
index 5cd8eccd2..000000000
--- a/gen/directives_generate.go
+++ /dev/null
@@ -1,116 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"io/ioutil"
-	"os"
-	"sort"
-	"strconv"
-	"strings"
-)
-
-var middlewarePath = "github.com/miekg/coredns/middleware/"
-var header = "// generated by directives_generate.go; DO NOT EDIT\n"
-
-func main() {
-	mwFile := os.Args[1]
-
-	mi := make(map[string]string, 0)
-	md := make(map[int]string, 0)
-
-	if file, err := os.Open(mwFile); err == nil {
-		defer file.Close()
-
-		scanner := bufio.NewScanner(file)
-		for scanner.Scan() {
-			line := scanner.Text()
-			if !strings.HasPrefix(line, `//`) && !strings.HasPrefix(line, "#") {
-				items := strings.Split(line, ":")
-				if len(items) == 3 {
-					if priority, err := strconv.Atoi(items[0]); err == nil {
-						md[priority] = items[1]
-					}
-
-					if items[2] != "" {
-						if strings.Contains(items[2], "/") {
-							mi[items[1]] = items[2]
-						} else {
-							mi[items[1]] = middlewarePath + items[2]
-						}
-					}
-
-				}
-			}
-		}
-
-		var orders []int
-		for k := range md {
-			orders = append(orders, k)
-		}
-		sort.Ints(orders)
-
-		if os.Getenv("GOPACKAGE") == "core" {
-			genImports("zmiddleware.go", mi)
-		}
-		if os.Getenv("GOPACKAGE") == "dnsserver" {
-			genDirectives("zdirectives.go", md)
-		}
-
-	} else {
-		os.Exit(1)
-	}
-	os.Exit(0)
-
-}
-
-func genImports(file string, mi map[string]string) {
-	outs := header + "package " + os.Getenv("GOPACKAGE") + "\n\n" + "import ("
-
-	if len(mi) > 0 {
-		outs += "\n"
-	}
-
-	for _, v := range mi {
-		outs += "		_ \"" + v + "\"\n"
-	}
-	outs += ")\n"
-
-	err := ioutil.WriteFile(file, []byte(outs), 0644)
-	if err != nil {
-		os.Exit(1)
-	}
-
-}
-
-func genDirectives(file string, md map[int]string) {
-
-	outs := header + "package " + os.Getenv("GOPACKAGE") + "\n\n"
-	outs += `
-// Directives are registered in the order they should be
-// executed.
-//
-// Ordering is VERY important. Every middleware will
-// feel the effects of all other middleware below
-// (after) them during a request, but they must not
-// care what middleware above them are doing.
-
-var directives = []string{
-`
-
-	var orders []int
-	for k := range md {
-		orders = append(orders, k)
-	}
-	sort.Ints(orders)
-
-	for _, k := range orders {
-		outs += "		\"" + md[k] + "\",\n"
-	}
-
-	outs += "}\n"
-
-	err := ioutil.WriteFile(file, []byte(outs), 0644)
-	if err != nil {
-		os.Exit(1)
-	}
-}