func ArticleHandler(ctx *app.Context) {
slug := ctx.IndexValue(0)
var art *article.Article
articles := getArticles(ctx)
for _, v := range articles {
if v.Slug() == slug {
art = v
break
}
}
if art == nil {
for _, v := range articles {
for _, s := range v.AllSlugs() {
if s == slug {
ctx.MustRedirectReverse(true, ctx.HandlerName(), s)
return
}
}
}
ctx.NotFound("article not found")
return
}
fs := vfs.Memory()
filename := path.Base(art.Filename)
if filename == "" {
filename = "article.html"
}
if err := vfs.WriteFile(fs, filename, art.Text, 0644); err != nil {
panic(err)
}
log.Debugf("loading article %s", articleId(art))
tmpl, err := app.LoadTemplate(ctx.App(), fs, nil, filename)
if err != nil {
panic(err)
}
var buf bytes.Buffer
if err := tmpl.ExecuteTo(&buf, ctx, nil); err != nil {
panic(err)
}
body := buf.String()
data := map[string]interface{}{
"Article": art,
"Title": art.Title(),
"Body": template.HTML(body),
}
ctx.MustExecute("article.html", data)
}
func UserImageHandler(ctx *app.Context) {
if ImageHandler != nil {
ImageHandler(ctx)
return
}
id := ctx.IndexValue(0)
format := ctx.IndexValue(1)
if lower := strings.ToLower(format); lower != format {
ctx.MustRedirectReverse(true, ImageHandlerName, id, lower)
return
}
ctx.SetHeader("Content-Type", "image/"+format)
httpserve.NeverExpires(ctx)
bs := ctx.Blobstore()
if err := bs.Serve(ctx, id, nil); err != nil {
panic(err)
}
}
// NewPager returns a new *Pager instance. Note that the
// Context must satisfy the conditions mentioned in the
// Pager type documentation. Otherwise an error will be
// returned.
func NewPager(ctx *app.Context) (*Pager, error) {
name := ctx.HandlerName()
if name == "" {
return nil, errors.New("can't generate a pager from an unnamed handler")
}
names := ctx.Provider().ParamNames()
if len(names) == 0 {
return nil, errors.New("can't generate a pager from a handler with no parameters, must have a page parameter")
}
if names[len(names)-1] != "page" {
return nil, fmt.Errorf("last named parameter is %q, not page", names[len(names)-1])
}
params := make([]interface{}, ctx.Count()-1)
for ii := 0; ii < ctx.Count()-1; ii++ {
params[ii] = ctx.IndexValue(ii)
}
return &Pager{
Name: name,
Parameters: params,
Ctx: ctx,
}, nil
}
func PackageHandler(ctx *app.Context) {
dctx := getEnvironment(ctx)
rel := ctx.IndexValue(0)
if rel[len(rel)-1] == '/' {
ctx.MustRedirectReverse(true, PackageHandlerName, rel[:len(rel)-1])
return
}
pkg, err := dctx.ImportPackage(rel)
if err != nil {
panic(err)
}
var title string
var header string
var distinct bool
switch {
case pkg.IsMain():
title = "Command " + path.Base(rel)
header = title
case pkg.IsEmpty():
prefix := "Directory "
header = prefix + path.Base(rel)
if pkg.ImportPath() != "" {
title = prefix + pkg.ImportPath()
} else {
title = header
}
default:
title = "Package " + pkg.ImportPath()
header = "Package " + pkg.Name()
distinct = path.Base(pkg.ImportPath()) != pkg.Name()
}
breadcrumbs := []*breadcrumb{
{Title: "Index", Href: ctx.MustReverse(ListHandlerName)},
}
if pkg.IsStd() {
breadcrumbs = append(breadcrumbs, &breadcrumb{
Title: "std",
Href: ctx.MustReverse(PackageHandlerName, "std"),
})
}
for ii := 0; ii < len(rel); {
var end int
slash := strings.IndexByte(rel[ii:], '/')
if slash < 0 {
end = len(rel)
} else {
end = ii + slash
}
breadcrumbs = append(breadcrumbs, &breadcrumb{
Title: rel[ii:end],
Href: ctx.MustReverse(PackageHandlerName, rel[:end]),
})
ii = end + 1
}
data := map[string]interface{}{
"Header": header,
"Title": title,
"Breadcrumbs": breadcrumbs,
"Package": pkg,
"Distinct": distinct,
}
ctx.MustExecute("package.html", data)
}
func SourceHandler(ctx *app.Context) {
dctx := doc.GetEnvironment(ctx.App())
rel := ctx.IndexValue(0)
p := dctx.FromSlash(rel)
pDir := dctx.Dir(p)
if pDir == "." {
pDir = p
} else {
}
dir := packageDir(dctx, pDir)
filePath := dir
if pDir+dctx.Separator != p && pDir != p {
filePath = dctx.Join(dir, dctx.Base(p))
}
log.Debugf("Loading source from %s", filePath)
var breadcrumbs []*breadcrumb
for ii := 0; ii < len(rel); {
var end int
slash := strings.IndexByte(rel[ii:], '/')
if slash < 0 {
end = len(rel)
} else {
end = ii + slash
}
breadcrumbs = append(breadcrumbs, &breadcrumb{
Title: rel[ii:end],
Href: ctx.MustReverse(SourceHandlerName, rel[:end]),
})
ii = end + 1
}
var tmpl string
var title string
var files []string
var code template.HTML
var lines []int
if dctx.IsDir(filePath) {
if rel != "" && rel[len(rel)-1] != '/' {
ctx.MustRedirectReverse(true, SourceHandlerName, rel+"/")
return
}
contents, err := dctx.ReadDir(filePath)
if err != nil {
panic(err)
}
for _, v := range contents {
if n := v.Name(); len(n) > 0 && n[0] != '.' {
files = append(files, n)
}
}
title = "Directory " + dctx.Base(rel)
tmpl = "dir.html"
} else {
f, err := dctx.OpenFile(filePath)
if err != nil {
ctx.NotFound("File not found")
return
}
defer f.Close()
contents, err := ioutil.ReadAll(f)
if err != nil {
panic(err)
}
contentType := http.DetectContentType(contents)
if !strings.HasPrefix(contentType, "text") {
ctx.Header().Set("Content-Type", contentType)
switch contentType {
case "image/gif", "image/png", "image/jpeg":
default:
ctx.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s;", dctx.Base(rel)))
}
ctx.Write(contents)
return
}
title = "File " + dctx.Base(rel)
var buf bytes.Buffer
buf.WriteString("<span id=\"line-1\">")
last := 0
line := 1
for ii, v := range contents {
if v == '\n' {
buf.WriteString(html.Escape(string(contents[last:ii])))
lines = append(lines, line)
last = ii
line++
buf.WriteString(fmt.Sprintf("</span><span id=\"line-%d\">", line))
}
}
buf.Write(contents[last:])
buf.WriteString("</span>")
code = template.HTML(buf.String())
tmpl = "source.html"
}
data := map[string]interface{}{
"Title": rel,
"Header": title,
"Breadcrumbs": breadcrumbs,
"Files": files,
"Code": code,
"Lines": lines,
"Padding": math.Ceil(math.Log10(float64(len(lines)+1))) + 0.1,
"Highlighter": highlighters[path.Ext(rel)],
}
ctx.MustExecute(tmpl, data)
}