-
Notifications
You must be signed in to change notification settings - Fork 33
/
htmlw.go
143 lines (121 loc) · 2.93 KB
/
htmlw.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
// Package htmlw implements a RecordWriter for HTML.
package htmlw
import (
"bytes"
"encoding/base64"
"fmt"
"html"
"io"
"strconv"
"time"
"github.com/neilotoole/sq/cli/output"
"github.com/neilotoole/sq/libsq/core/kind"
"github.com/neilotoole/sq/libsq/core/errz"
"github.com/neilotoole/sq/libsq/core/sqlz"
"github.com/neilotoole/sq/libsq/core/stringz"
)
// RecordWriter implements output.RecordWriter.
type recordWriter struct {
recMeta sqlz.RecordMeta
out io.Writer
buf *bytes.Buffer
}
// NewRecordWriter an output.RecordWriter for HTML.
func NewRecordWriter(out io.Writer) output.RecordWriter {
return &recordWriter{out: out}
}
// Open implements output.RecordWriter.
func (w *recordWriter) Open(recMeta sqlz.RecordMeta) error {
w.recMeta = recMeta
w.buf = &bytes.Buffer{}
const header = `<!doctype html>
<html>
<head>
<title>sq output</title>
</head>
<body>
<table>
<colgroup>
`
w.buf.WriteString(header)
for _, field := range recMeta {
w.buf.WriteString(" <col class=\"kind-")
w.buf.WriteString(field.Kind().String())
w.buf.WriteString("\" />\n")
}
w.buf.WriteString(" </colgroup>\n <thead>\n <tr>\n")
for _, field := range recMeta {
w.buf.WriteString(" <th scope=\"col\">")
w.buf.WriteString(field.Name())
w.buf.WriteString("</th>\n")
}
w.buf.WriteString(" </tr>\n </thead>\n <tbody>\n")
return nil
}
// Flush implements output.RecordWriter.
func (w *recordWriter) Flush() error {
_, err := w.buf.WriteTo(w.out) // resets buf
return errz.Err(err)
}
// Close implements output.RecordWriter.
func (w *recordWriter) Close() error {
err := w.Flush()
if err != nil {
return err
}
const footer = ` </tbody>
</table>
</body>
</html>
`
_, err = w.out.Write([]byte(footer))
return errz.Err(err)
}
func (w *recordWriter) writeRecord(rec sqlz.Record) error {
w.buf.WriteString(" <tr>\n")
var s string
for i, field := range rec {
w.buf.WriteString(" <td>")
switch val := field.(type) {
default:
s = html.EscapeString(fmt.Sprintf("%v", val))
// should never happen
case nil:
// nil is rendered as empty string, which this cell already is
case *int64:
s = strconv.FormatInt(*val, 10)
case *string:
s = html.EscapeString(*val)
case *bool:
s = strconv.FormatBool(*val)
case *float64:
s = stringz.FormatFloat(*val)
case *[]byte:
s = base64.StdEncoding.EncodeToString(*val)
case *time.Time:
switch w.recMeta[i].Kind() { //nolint:exhaustive
default:
s = val.Format(stringz.DatetimeFormat)
case kind.Time:
s = val.Format(stringz.TimeFormat)
case kind.Date:
s = val.Format(stringz.DateFormat)
}
}
w.buf.WriteString(s)
w.buf.WriteString("</td>\n")
}
w.buf.WriteString(" </tr>\n")
return nil
}
// WriteRecords implements output.RecordWriter.
func (w *recordWriter) WriteRecords(recs []sqlz.Record) error {
var err error
for _, rec := range recs {
err = w.writeRecord(rec)
if err != nil {
return err
}
}
return nil
}