139 lines
3.0 KiB
Go
139 lines
3.0 KiB
Go
package filemanager
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import (
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"bytes"
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"encoding/json"
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"errors"
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"io/ioutil"
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"net/http"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/hacdias/filemanager/frontmatter"
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)
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// put is used to update a file that was edited
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func put(c *requestContext, w http.ResponseWriter, r *http.Request) (err error) {
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var (
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data = map[string]interface{}{}
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file []byte
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kind string
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rawBuffer = new(bytes.Buffer)
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)
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kind = r.Header.Get("kind")
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rawBuffer.ReadFrom(r.Body)
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if kind != "" {
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err = json.Unmarshal(rawBuffer.Bytes(), &data)
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if err != nil {
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return
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}
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}
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switch kind {
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case "frontmatter-only":
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if file, err = parseFrontMatterOnlyFile(data, r.URL.Path); err != nil {
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return
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}
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case "content-only":
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mainContent := data["content"].(string)
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mainContent = strings.TrimSpace(mainContent)
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file = []byte(mainContent)
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case "complete":
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var mark rune
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if v := r.Header.Get("Rune"); v != "" {
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var n int
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n, err = strconv.Atoi(v)
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if err != nil {
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return err
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}
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mark = rune(n)
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}
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if file, err = parseCompleteFile(data, r.URL.Path, mark); err != nil {
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return
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}
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default:
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file = rawBuffer.Bytes()
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}
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// Overwrite the request Body
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r.Body = ioutil.NopCloser(bytes.NewReader(file))
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return
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}
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// parseFrontMatterOnlyFile parses a frontmatter only file
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func parseFrontMatterOnlyFile(data interface{}, filename string) ([]byte, error) {
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frontmatter := strings.TrimPrefix(filepath.Ext(filename), ".")
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f, err := parseFrontMatter(data, frontmatter)
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fString := string(f)
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// If it's toml or yaml, strip frontmatter identifier
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if frontmatter == "toml" {
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fString = strings.TrimSuffix(fString, "+++\n")
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fString = strings.TrimPrefix(fString, "+++\n")
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}
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if frontmatter == "yaml" {
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fString = strings.TrimSuffix(fString, "---\n")
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fString = strings.TrimPrefix(fString, "---\n")
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}
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f = []byte(fString)
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return f, err
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}
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// parseFrontMatter is the frontmatter parser
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func parseFrontMatter(data interface{}, front string) ([]byte, error) {
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var mark rune
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switch front {
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case "toml":
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mark = '+'
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case "json":
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mark = '{'
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case "yaml":
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mark = '-'
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default:
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return nil, errors.New("Unsupported Format provided")
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}
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return frontmatter.Marshal(data, mark)
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}
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// parseCompleteFile parses a complete file
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func parseCompleteFile(data map[string]interface{}, filename string, mark rune) ([]byte, error) {
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mainContent := ""
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if _, ok := data["content"]; ok {
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// The main content of the file
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mainContent = data["content"].(string)
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mainContent = "\n\n" + strings.TrimSpace(mainContent) + "\n"
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// Removes the main content from the rest of the frontmatter
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delete(data, "content")
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}
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if _, ok := data["date"]; ok {
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data["date"] = data["date"].(string) + ":00"
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}
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front, err := frontmatter.Marshal(data, mark)
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if err != nil {
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return []byte{}, err
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}
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front = []byte(frontmatter.AppendRune(string(front), mark))
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// Generates the final file
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f := new(bytes.Buffer)
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f.Write(front)
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f.Write([]byte(mainContent))
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return f.Bytes(), nil
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}
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