mdtable.gno

 1// Package mdtable provides a simple way to create Markdown tables.
 2//
 3// Example usage:
 4//
 5//	import "gno.land/p/moul/mdtable"
 6//
 7//	func Render(path string) string {
 8//	    table := mdtable.Table{
 9//	        Headers: []string{"ID", "Title", "Status", "Date"},
10//	    }
11//	    table.Append([]string{"#1", "Add a new validator", "succeed", "2024-01-01"})
12//	    table.Append([]string{"#2", "Change parameter", "timed out", "2024-01-02"})
13//	    return table.String()
14//	}
15//
16// Output:
17//
18//	| ID | Title | Status | Date |
19//	| --- | --- | --- | --- |
20//	| #1 | Add a new validator | succeed | 2024-01-01 |
21//	| #2 | Change parameter | timed out | 2024-01-02 |
22package mdtable
23
24import (
25	"strings"
26)
27
28type Table struct {
29	Headers []string
30	Rows    [][]string
31	// XXX: optional headers alignment.
32}
33
34func (t *Table) Append(row []string) {
35	t.Rows = append(t.Rows, row)
36}
37
38func (t Table) String() string {
39	// XXX: switch to using text/tabwriter when porting to Gno to support
40	// better-formatted raw Markdown output.
41
42	if len(t.Headers) == 0 && len(t.Rows) == 0 {
43		return ""
44	}
45
46	var sb strings.Builder
47
48	if len(t.Headers) == 0 {
49		t.Headers = make([]string, len(t.Rows[0]))
50	}
51
52	// Print header.
53	sb.WriteString("| " + strings.Join(t.Headers, " | ") + " |\n")
54	sb.WriteString("|" + strings.Repeat(" --- |", len(t.Headers)) + "\n")
55
56	// Print rows.
57	for _, row := range t.Rows {
58		escapedRow := make([]string, len(row))
59		for i, cell := range row {
60			escapedRow[i] = strings.ReplaceAll(cell, "|", "|") // Escape pipe characters.
61		}
62		sb.WriteString("| " + strings.Join(escapedRow, " | ") + " |\n")
63	}
64
65	return sb.String()
66}