1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
package render
import (
"adammathes.com/snkt/config"
"adammathes.com/snkt/vlog"
"bytes"
"io/ioutil"
"log"
"os"
"path"
"path/filepath"
"regexp"
"text/template"
)
var templates map[string]*template.Template
var BASE_TEMPLATE = "base"
var rel_href *regexp.Regexp
var rel_src *regexp.Regexp
/*
Renderable interface - objects that render themeslves to a []byte and
know where they should end up in the filesystem
*/
type Renderable interface {
Render() []byte
Target() string
}
func TemplateNames() []string {
templateNames := make([]string, len(templates))
i := 0
for tName, _ := range templates {
templateNames[i] = tName
i++
}
return templateNames
}
func Write(a Renderable) {
if config.Config.Verbose {
vlog.Printf("Writing to %s\n", a.Target())
}
os.MkdirAll(path.Dir(a.Target()), 0755)
err := ioutil.WriteFile(a.Target(), a.Render(), 0755)
if err != nil {
log.Println(err)
}
}
/*
Initializes templates from config.TmplDir
Templates are mapped by filename
*/
func Init() {
templates = make(map[string]*template.Template)
ts, err := filepath.Glob(config.Config.TmplDir + "/*")
if err != nil {
log.Fatal(err)
}
tmplFuncs := template.FuncMap{
"ResolveURLs": ResolveURLs,
"SiteTitle": SiteTitle,
"SiteURL": SiteURL,
}
base := path.Join(config.Config.TmplDir, BASE_TEMPLATE)
for _, t := range ts {
tf := filepath.Base(t)
// Duly Noted: set funcs before parsefiles or you get no funcs
// templates[tf] = template.Must(template.ParseFiles(t, base))
tx := template.New("t").Funcs(tmplFuncs)
templates[tf], err = tx.ParseFiles(base, t)
if err != nil {
// temporary files can confuse this, especially when
// running the file system watcher so we silently
// ignore any templates that disappeared since we started
// since this is usually not a real error condition
delete(templates, tf)
}
}
rel_href = regexp.MustCompile(`href="/(.+)"`)
rel_src = regexp.MustCompile(`src="/(.+)"`)
}
/*
Render fills the template "name" using data via the BASE_TEMPLATE
*/
func Render(name string, data interface{}) []byte {
return RenderNameVia(name, BASE_TEMPLATE, data)
}
/*
Render fills the template "name" using data
*/
func RenderOnly(name string, data interface{}) []byte {
return RenderNameVia(name, name, data)
}
/*
Render fills the template "name" using data through via (ex: BASE_TEMPLATE)
*/
func RenderNameVia(name string, via string, data interface{}) []byte {
t, ok := templates[name]
if !ok {
log.Printf("can not find template named %s\n", name)
}
var buf bytes.Buffer
err := t.ExecuteTemplate(&buf, via, data)
if err != nil {
log.Println(err)
}
return buf.Bytes()
}
/*
Finds any relative links/images in html and resolves by adding prefix
*/
func ResolveURLs(html, prefix string) string {
bts := []byte(html)
bts = rel_href.ReplaceAll(bts, []byte(`href="`+prefix+`/$1"`))
bts = rel_src.ReplaceAll(bts, []byte(`src="`+prefix+`/$1"`))
return string(bts)
}
/*
Runs all regex filters specified in config.Config.Filters
*/
func Filter(txt []byte) []byte {
for _, f := range config.Config.Filters {
// TODO: only compile these once at init
re := regexp.MustCompile(f.S)
txt = re.ReplaceAll(txt, []byte(f.R))
}
return txt
}
func TmplExists(t string) bool {
_, ok := templates[t]
return ok
}
func SiteTitle() string {
return config.Config.SiteTitle
}
func SiteURL() string {
return config.Config.SiteURL
}
|
