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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
package queue
import (
"bufio"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"text/template"
"time"
"github.com/mpolden/lftpq/parser"
)
type Config struct {
Default Site
LocalDirs []LocalDir
Sites []Site
}
type Replacement struct {
Pattern string
pattern *regexp.Regexp
Replacement string
}
type LocalDir struct {
Name string
Parser string
Dir string
Replacements []Replacement
Template *template.Template `json:"-"`
}
type Site struct {
GetCmd string
Name string
Dirs []string
MaxAge string
maxAge time.Duration
Patterns []string
patterns []*regexp.Regexp
Filters []string
filters []*regexp.Regexp
SkipSymlinks bool
SkipExisting bool
SkipFiles bool
LocalDir string
Priorities []string
priorities []*regexp.Regexp
PostCommand string
postCommand *exec.Cmd
Merge bool
Skip bool
itemParser
}
type itemParser struct {
parser parser.Parser
template *template.Template
replacements []Replacement
}
func compilePatterns(patterns []string) ([]*regexp.Regexp, error) {
res := make([]*regexp.Regexp, 0, len(patterns))
for _, p := range patterns {
re, err := regexp.Compile(p)
if err != nil {
return nil, err
}
res = append(res, re)
}
return res, nil
}
func compileReplacements(replacements []Replacement) ([]Replacement, error) {
res := make([]Replacement, 0, len(replacements))
for _, r := range replacements {
pattern, err := regexp.Compile(r.Pattern)
if err != nil {
return nil, err
}
r.pattern = pattern
res = append(res, r)
}
return res, nil
}
func parseTemplate(tmpl string) (*template.Template, error) {
funcMap := template.FuncMap{"Sprintf": fmt.Sprintf}
t, err := template.New("").Funcs(funcMap).Parse(tmpl)
if err != nil {
return nil, err
}
return t, nil
}
func expandUser(path string) string {
tilde := strings.Index(path, "~")
end := strings.IndexRune(path, os.PathSeparator)
if tilde != 0 {
return path
}
if end == -1 {
end = len(path)
}
home := os.Getenv("HOME")
if end > 1 {
home = filepath.Join(filepath.Dir(home), path[1:end])
}
return filepath.Join(home, path[end:])
}
func command(cmd string) (*exec.Cmd, error) {
if cmd == "" {
return nil, nil
}
argv := strings.Split(cmd, " ")
program := expandUser(argv[0])
if _, err := exec.LookPath(program); err != nil {
return nil, err
}
return exec.Command(program, argv[1:]...), nil
}
func (c *Config) load() error {
itemParsers := make(map[string]itemParser)
for i, d := range c.LocalDirs {
if d.Name == "" {
return fmt.Errorf("invalid local dir name: %q", d.Name)
}
if d.Dir == "" {
return fmt.Errorf("invalid local dir path: %q", d.Dir)
}
if _, ok := itemParsers[d.Name]; ok {
return fmt.Errorf("invalid local dir: %q: declared multiple times", d.Name)
}
var parserFunc parser.Parser
switch d.Parser {
case "show":
parserFunc = parser.Show
case "movie":
parserFunc = parser.Movie
case "":
parserFunc = parser.Default
default:
return fmt.Errorf("invalid local dir %q: invalid parser: %q (must be %q, %q or %q)",
d.Name, d.Parser, "show", "movie", "")
}
tmpl, err := parseTemplate(d.Dir)
if err != nil {
return err
}
replacements, err := compileReplacements(d.Replacements)
if err != nil {
return err
}
itemParsers[d.Name] = itemParser{
parser: parserFunc,
replacements: replacements,
template: tmpl,
}
c.LocalDirs[i].Template = tmpl
}
for i := range c.Sites {
site := &c.Sites[i]
maxAge, err := time.ParseDuration(site.MaxAge)
if err != nil {
return err
}
site.maxAge = maxAge
patterns, err := compilePatterns(site.Patterns)
if err != nil {
return err
}
site.patterns = patterns
filters, err := compilePatterns(site.Filters)
if err != nil {
return err
}
site.filters = filters
priorities, err := compilePatterns(site.Priorities)
if err != nil {
return err
}
site.priorities = priorities
cmd, err := command(site.PostCommand)
if err != nil {
return err
}
site.postCommand = cmd
itemParser, ok := itemParsers[site.LocalDir]
if !ok {
return fmt.Errorf("site: %q: invalid local dir: %q", site.Name, site.LocalDir)
}
site.itemParser = itemParser
}
return nil
}
func (c *Config) SetLocalDir(name string) error {
newCfg := *c
newCfg.Sites = make([]Site, len(c.Sites))
for i, s := range c.Sites {
s.LocalDir = name
newCfg.Sites[i] = s
}
if err := newCfg.load(); err != nil {
return err
}
*c = newCfg
return nil
}
func (c *Config) JSON() ([]byte, error) {
return json.MarshalIndent(c, "", " ")
}
func readConfig(r io.Reader) (Config, error) {
data, err := ioutil.ReadAll(r)
if err != nil {
return Config{}, err
}
// Unmarshal config and replace every site with the default one
var defaults Config
if err := json.Unmarshal(data, &defaults); err != nil {
return Config{}, err
}
for i := range defaults.Sites {
defaults.Sites[i] = defaults.Default
}
// Unmarshal config again, letting individual sites override the defaults
cfg := defaults
if err := json.Unmarshal(data, &cfg); err != nil {
return Config{}, err
}
return cfg, nil
}
func ReadConfig(path string) (Config, error) {
path = expandUser(path)
var r io.Reader
if path == "-" {
r = bufio.NewReader(os.Stdin)
} else {
f, err := os.Open(path)
if err != nil {
return Config{}, err
}
defer f.Close()
r = f
}
cfg, err := readConfig(r)
if err != nil {
return Config{}, err
}
if err := cfg.load(); err != nil {
return Config{}, err
}
return cfg, nil
}
|
