Added example_test

noborus · Mar 21, 2023 · 15c739b · 15c739b
1 parent 450b298
commit 15c739b
Showing 1 changed file with 70 additions and 0 deletions.
diff --git a/example_test.go b/example_test.go
@@ -0,0 +1,70 @@
+package guesswidth_test
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"strings"
+
+	"github.com/noborus/guesswidth"
+)
+
+func ExampleReader() {
+	in := `USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
+root           1  0.0  0.0 168720 13788 ?        Ss   Mar11   0:50 /sbin/init splash
+root           2  0.0  0.0      0     0 ?        S    Mar11   0:00 [kthreadd]
+root           3  0.0  0.0      0     0 ?        I<   Mar11   0:00 [rcu_gp]
+noborus   660384  0.0  0.3 3505316 115544 ?      Sl   07:43   0:09 gjs /usr/share/gnome-shell/extensions/[email protected]/ding.js -E -P /usr/share/gnome-shell/extensions/[email protected] -M 1 -D 1920:0:1920:1080:1:0:0:0:0:0 -D 0:0:1920:1200:2:27:0:0:0:1
+noborus   735125  0.0  0.0  10268  2420 pts/3    S+   11:24   0:00 grep --color gnome-shell
+`
+	r := guesswidth.NewReader(strings.NewReader(in))
+
+	for {
+		record, err := r.Read()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println(record)
+	}
+	// Output:
+	// [USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND]
+	// [root 1 0.0 0.0 168720 13788 ? Ss Mar11 0:50 /sbin/init splash]
+	// [root 2 0.0 0.0 0 0 ? S Mar11 0:00 [kthreadd]]
+	// [root 3 0.0 0.0 0 0 ? I< Mar11 0:00 [rcu_gp]]
+	// [noborus 660384 0.0 0.3 3505316 115544 ? Sl 07:43 0:09 gjs /usr/share/gnome-shell/extensions/[email protected]/ding.js -E -P /usr/share/gnome-shell/extensions/[email protected] -M 1 -D 1920:0:1920:1080:1:0:0:0:0:0 -D 0:0:1920:1200:2:27:0:0:0:1]
+	// [noborus 735125 0.0 0.0 10268 2420 pts/3 S+ 11:24 0:00 grep --color gnome-shell]
+}
+
+func ExampleToTable() {
+	lines := []string{
+		"    PID TTY          TIME CMD",
+		"1595989 pts/6    00:00:01 zsh",
+		"1690373 pts/6    00:00:00 ps",
+	}
+	table := guesswidth.ToTable(lines, 1, true)
+	fmt.Println(table)
+	// Output:
+	// [[PID TTY TIME CMD] [1595989 pts/6 00:00:01 zsh] [1690373 pts/6 00:00:00 ps]]
+}
+
+func ExampleToTableN() {
+	lines := []string{
+		"2022-12-21T09:50:16+0000 WARN A warning that should be ignored is usually at this level and should be actionable.",
+		"2022-12-21T09:50:17+0000 INFO This is less important than debug log and is often used to provide context in the current task.",
+		"2022-12-10T05:33:53+0000 DEBUG This is a debug log that shows a log that can be ignored.",
+		"2022-12-10T05:33:53+0000 INFO This is less important than debug log and is often used to provide context in the current task.",
+	}
+	table := guesswidth.ToTableN(lines, 1, 2, true)
+	for _, columns := range table {
+		fmt.Println(strings.Join(columns, ","))
+	}
+	// Output:
+	// 2022-12-21T09:50:16+0000,WARN,A warning that should be ignored is usually at this level and should be actionable.
+	// 2022-12-21T09:50:17+0000,INFO,This is less important than debug log and is often used to provide context in the current task.
+	// 2022-12-10T05:33:53+0000,DEBUG,This is a debug log that shows a log that can be ignored.
+	// 2022-12-10T05:33:53+0000,INFO,This is less important than debug log and is often used to provide context in the current task.
+}