/
fshow.go
148 lines (121 loc) · 2.62 KB
/
fshow.go
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
// fshow.go - show RSS Content
package main
import (
"crypto/sha1"
"fmt"
"log"
"os"
"os/exec"
"strconv"
"github.com/dhn/feedme/lib/config"
"github.com/dhn/feedme/thirdparty/getopt"
"github.com/dhn/feedme/thirdparty/sqlite3"
)
// A Args set getopt arguments
type Args struct {
read int
editor string
}
var cursor *sqlite3.Conn
var args = Args{0, os.Getenv("EDITOR")}
func die(format string, args ...interface{}) {
fmt.Printf(format, args...)
os.Exit(1)
}
func checkErr(err error) {
if err != nil {
panic(err)
}
}
func checkSystemEnv(env string) bool {
if len(os.Getenv(env)) == 0 {
return false
}
return true
}
func checkFileExist(filename string) bool {
if _, err := os.Stat(filename); os.IsNotExist(err) {
return false
}
return true
}
func initSQL() {
if !checkFileExist(config.SQLDatabase) {
die("%s not found, please run first ffetch\n", config.SQLDatabase)
} else {
cursor, _ = sqlite3.Open(config.SQLDatabase)
}
}
func getTitle(id int) string {
var row sqlite3.RowMap
var result *sqlite3.Stmt
var err error
// If id is empty (0) show the last row entry.
if id == 0 {
query := "SELECT title from feed ORDER BY date DESC LIMIT 1;"
row = make(sqlite3.RowMap)
result, err = cursor.Query(query)
} else {
query := "SELECT title from feed WHERE id = $id;"
sql := sqlite3.NamedArgs{"$id": id}
row = make(sqlite3.RowMap)
result, err = cursor.Query(query, sql)
if err != nil {
die("Id: %d not found.\n", id)
}
}
checkErr(err)
result.Scan(row)
return row["title"].(string)
}
func hash(str string) string {
hash := sha1.New()
hash.Write([]byte(str))
bs := hash.Sum(nil)
return fmt.Sprintf("%x", bs)
}
func openArticle(article string) {
cmd := exec.Command(args.editor, article)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
log.Fatal(err)
}
}
func usage() {
fmt.Println("usage: fshow [options]")
fmt.Println(" -r, Show article n in your $EDITOR (default the newest).")
fmt.Println(" -h, Show this help and exit.")
}
func main() {
if checkSystemEnv("EDITOR") {
var c int
getopt.OptErr = 0
for {
if c = getopt.Getopt("r:h"); c == getopt.EOF {
break
}
switch c {
case 'r':
args.read, _ = strconv.Atoi(getopt.OptArg)
case 'h':
usage()
os.Exit(0)
}
}
if checkFileExist(config.FilePath) {
initSQL()
article := getTitle(args.read)
file := config.FilePath + hash(article)
if checkFileExist(file) {
openArticle(file)
}
} else {
die("%s not found\n", config.FilePath)
}
} else {
die("Your $EDITOR value is not set\n")
}
}
/* vim: set noet sw=4 sts=4: */