okk.moe
🖨️ esc/pos implementation in gleam
docs: update readme
+46
-3
README.md
+46
-3
README.md
···
13
gleam add escpos@1
14
```
15
16
+
## Usage
17
+
18
+
### Declarative API
19
+
20
+
The `escpos/document` module provides a high-level declarative API:
21
+
22
```gleam
23
+
import escpos/document.{bold, cut, justify, styled, writeln, Center}
24
+
import escpos/printer
25
+
26
+
pub fn main() {
27
+
let assert Ok(printer) = printer.connect("192.168.1.100", 9100)
28
+
29
+
document.build([
30
+
styled([justify(Center), bold()], [
31
+
writeln("Receipt"),
32
+
]),
33
+
writeln("Item 1 ... $5.00"),
34
+
writeln("Item 2 ... $3.50"),
35
+
cut(),
36
+
])
37
+
|> printer.print(printer)
38
+
}
39
+
```
40
+
41
+
### Imperative API
42
43
+
The `escpos` module provides a lower-level builder-style API:
44
+
45
+
```gleam
46
+
import escpos.{Center, Left}
47
+
import escpos/printer
48
+
49
+
pub fn main() {
50
+
let assert Ok(printer) = printer.connect("192.168.1.100", 9100)
51
+
52
+
escpos.new()
53
+
|> escpos.reset()
54
+
|> escpos.set_align(Center)
55
+
|> escpos.set_bold(True)
56
+
|> escpos.writeln("Receipt")
57
+
|> escpos.set_bold(False)
58
+
|> escpos.set_align(Left)
59
+
|> escpos.writeln("Item 1 ... $5.00")
60
+
|> escpos.writeln("Item 2 ... $3.50")
61
+
|> escpos.line_feed(3)
62
+
|> escpos.cut()
63
+
|> printer.print(printer)
64
}
65
```
66