1package routes
 2
 3import (
 4	"bytes"
 5	"html/template"
 6	"io"
 7	"log"
 8	"net/http"
 9	"path/filepath"
10	"strings"
11
12	"git.icyphox.sh/legit/git"
13)
14
15func (d *deps) Write404(w http.ResponseWriter) {
16	tpath := filepath.Join(d.c.Dirs.Templates, "*")
17	t := template.Must(template.ParseGlob(tpath))
18	w.WriteHeader(404)
19	if err := t.ExecuteTemplate(w, "404", nil); err != nil {
20		log.Printf("404 template: %s", err)
21	}
22}
23
24func (d *deps) Write500(w http.ResponseWriter) {
25	tpath := filepath.Join(d.c.Dirs.Templates, "*")
26	t := template.Must(template.ParseGlob(tpath))
27	w.WriteHeader(500)
28	if err := t.ExecuteTemplate(w, "500", nil); err != nil {
29		log.Printf("500 template: %s", err)
30	}
31}
32
33func (d *deps) listFiles(files []git.NiceTree, data map[string]any, w http.ResponseWriter) {
34	tpath := filepath.Join(d.c.Dirs.Templates, "*")
35	t := template.Must(template.ParseGlob(tpath))
36
37	data["files"] = files
38	data["meta"] = d.c.Meta
39
40	if err := t.ExecuteTemplate(w, "tree", data); err != nil {
41		log.Println(err)
42		return
43	}
44}
45
46func countLines(r io.Reader) (int, error) {
47	buf := make([]byte, 32*1024)
48	bufLen := 0
49	count := 0
50	nl := []byte{'\n'}
51
52	for {
53		c, err := r.Read(buf)
54		if c > 0 {
55			bufLen += c
56		}
57		count += bytes.Count(buf[:c], nl)
58
59		switch {
60		case err == io.EOF:
61			/* handle last line not having a newline at the end */
62			if bufLen >= 1 && buf[(bufLen-1)%(32*1024)] != '\n' {
63				count++
64			}
65			return count, nil
66		case err != nil:
67			return 0, err
68		}
69	}
70}
71
72func (d *deps) showFile(content string, data map[string]any, w http.ResponseWriter) {
73	tpath := filepath.Join(d.c.Dirs.Templates, "*")
74	t := template.Must(template.ParseGlob(tpath))
75
76	lc, err := countLines(strings.NewReader(content))
77	if err != nil {
78		// Non-fatal, we'll just skip showing line numbers in the template.
79		log.Printf("counting lines: %s", err)
80	}
81
82	lines := make([]int, lc)
83	if lc > 0 {
84		for i := range lines {
85			lines[i] = i + 1
86		}
87	}
88
89	data["linecount"] = lines
90	data["content"] = content
91	data["meta"] = d.c.Meta
92
93	if err := t.ExecuteTemplate(w, "file", data); err != nil {
94		log.Println(err)
95		return
96	}
97}