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mycorrhiza/http_readers.go

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package main
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"path/filepath"
"strings"
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"github.com/bouncepaw/mycorrhiza/history"
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"github.com/bouncepaw/mycorrhiza/markup"
"github.com/bouncepaw/mycorrhiza/mimetype"
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"github.com/bouncepaw/mycorrhiza/templates"
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"github.com/bouncepaw/mycorrhiza/tree"
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"github.com/bouncepaw/mycorrhiza/user"
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"github.com/bouncepaw/mycorrhiza/util"
)
func init() {
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http.HandleFunc("/page/", handlerHypha)
http.HandleFunc("/hypha/", handlerHypha)
http.HandleFunc("/text/", handlerText)
http.HandleFunc("/binary/", handlerBinary)
http.HandleFunc("/rev/", handlerRevision)
}
// handlerRevision displays a specific revision of text part a page
func handlerRevision(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
shorterUrl = strings.TrimPrefix(rq.URL.Path, "/rev/")
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firstSlashIndex = strings.IndexRune(shorterUrl, '/')
revHash = shorterUrl[:firstSlashIndex]
hyphaName = CanonicalName(shorterUrl[firstSlashIndex+1:])
contents = fmt.Sprintf(`<p>This hypha had no text at this revision.</p>`)
TextPath = hyphaName + ".myco"
textContents, err = history.FileAtRevision(TextPath, revHash)
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u = user.FromRequest(rq)
)
if err == nil {
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contents = markup.Doc(hyphaName, textContents).AsHTML()
}
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treeHTML, _, _ := tree.Tree(hyphaName, IterateHyphaNamesWith)
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page := templates.RevisionHTML(
rq,
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hyphaName,
naviTitle(hyphaName),
contents,
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treeHTML,
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revHash,
)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(base(util.BeautifulName(hyphaName), page, u)))
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}
// handlerText serves raw source text of the hypha.
func handlerText(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
hyphaName := HyphaNameFromRq(rq, "text")
if data, ok := HyphaStorage[hyphaName]; ok {
log.Println("Serving", data.TextPath)
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w.Header().Set("Content-Type", "text/plain; charset=utf-8")
http.ServeFile(w, rq, data.TextPath)
}
}
// handlerBinary serves binary part of the hypha.
func handlerBinary(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
hyphaName := HyphaNameFromRq(rq, "binary")
if data, ok := HyphaStorage[hyphaName]; ok {
log.Println("Serving", data.BinaryPath)
w.Header().Set("Content-Type", mimetype.FromExtension(filepath.Ext(data.BinaryPath)))
http.ServeFile(w, rq, data.BinaryPath)
}
}
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// handlerHypha is the main hypha action that displays the hypha and the binary upload form along with some navigation.
func handlerHypha(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
var (
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hyphaName = HyphaNameFromRq(rq, "page", "hypha")
data, hyphaExists = HyphaStorage[hyphaName]
hasAmnt = hyphaExists && data.BinaryPath != ""
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contents string
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openGraph string
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u = user.FromRequest(rq)
)
if hyphaExists {
fileContentsT, errT := ioutil.ReadFile(data.TextPath)
_, errB := os.Stat(data.BinaryPath)
if errT == nil {
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md := markup.Doc(hyphaName, string(fileContentsT))
contents = md.AsHTML()
openGraph = md.OpenGraphHTML()
}
if !os.IsNotExist(errB) {
contents = binaryHtmlBlock(hyphaName, data) + contents
}
}
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treeHTML, prevHypha, nextHypha := tree.Tree(hyphaName, IterateHyphaNamesWith)
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util.HTTP200Page(w,
templates.BaseHTML(
util.BeautifulName(hyphaName),
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templates.PageHTML(rq, hyphaName,
naviTitle(hyphaName),
contents,
treeHTML,
prevHypha, nextHypha,
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hasAmnt),
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u,
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openGraph))
}