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// Copyright 2011 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.
package main
import (
"go/doc"
"go/parser"
"go/token"
"log"
"os"
"path/filepath"
"strings"
)
const MaxCommentLength = 500 // App Engine won't store more in a StringProperty.
func (b *Builder) buildPackages(workpath string, hash string) os.Error {
pkgs, err := packages()
if err != nil {
return err
}
for _, p := range pkgs {
goroot := filepath.Join(workpath, "go")
gobin := filepath.Join(goroot, "bin")
goinstall := filepath.Join(gobin, "goinstall")
envv := append(b.envv(), "GOROOT="+goroot)
// add GOBIN to path
for i, v := range envv {
if strings.HasPrefix(v, "PATH=") {
p := filepath.SplitList(v[5:])
p = append([]string{gobin}, p...)
s := strings.Join(p, string(filepath.ListSeparator))
envv[i] = "PATH=" + s
}
}
// goinstall
buildLog, code, err := runLog(envv, "", goroot, goinstall, "-log=false", p)
if err != nil {
log.Printf("goinstall %v: %v", p, err)
}
// get doc comment from package source
info, err := packageComment(p, filepath.Join(goroot, "src", "pkg", p))
if err != nil {
log.Printf("packageComment %v: %v", p, err)
}
// update dashboard with build state + info
err = b.updatePackage(p, code == 0, buildLog, info)
if err != nil {
log.Printf("updatePackage %v: %v", p, err)
}
}
return nil
}
func isGoFile(fi *os.FileInfo) bool {
return fi.IsRegular() && // exclude directories
!strings.HasPrefix(fi.Name, ".") && // ignore .files
filepath.Ext(fi.Name) == ".go"
}
func packageComment(pkg, pkgpath string) (info string, err os.Error) {
fset := token.NewFileSet()
pkgs, err := parser.ParseDir(fset, pkgpath, isGoFile, parser.PackageClauseOnly|parser.ParseComments)
if err != nil {
return
}
for name := range pkgs {
if name == "main" {
continue
}
if info != "" {
return "", os.NewError("multiple non-main package docs")
}
pdoc := doc.NewPackageDoc(pkgs[name], pkg)
info = pdoc.Doc
}
// grab only first paragraph
if parts := strings.SplitN(info, "\n\n", 2); len(parts) > 1 {
info = parts[0]
}
// replace newlines with spaces
info = strings.Replace(info, "\n", " ", -1)
// truncate
if len(info) > MaxCommentLength {
info = info[:MaxCommentLength]
}
return
}
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