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Add template helper library (#10500)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package template | ||
|
|
||
| import ( | ||
| "crypto/sha256" | ||
| "fmt" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
|
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| UUID "github.com/hashicorp/go-uuid" | ||
| ) | ||
|
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| func nowSeconds() string { | ||
| return strconv.FormatInt(time.Now().Unix(), 10) | ||
| } | ||
|
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| func nowNano() string { | ||
| return strconv.FormatInt(time.Now().UnixNano(), 10) | ||
| } | ||
|
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| func truncate(maxLen int, str string) (string, error) { | ||
| if maxLen <= 0 { | ||
| return "", fmt.Errorf("max length must be > 0 but was %d", maxLen) | ||
| } | ||
| if len(str) > maxLen { | ||
| return str[:maxLen], nil | ||
| } | ||
| return str, nil | ||
| } | ||
|
|
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| const ( | ||
| sha256HashLen = 8 | ||
| ) | ||
|
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| func truncateSHA256(maxLen int, str string) (string, error) { | ||
| if maxLen <= 8 { | ||
| return "", fmt.Errorf("max length must be > 8 but was %d", maxLen) | ||
| } | ||
|
|
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| if len(str) <= maxLen { | ||
| return str, nil | ||
| } | ||
|
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| truncIndex := maxLen - sha256HashLen | ||
| hash := hashSHA256(str[truncIndex:]) | ||
| result := fmt.Sprintf("%s%s", str[:truncIndex], hash[:sha256HashLen]) | ||
| return result, nil | ||
| } | ||
|
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| func hashSHA256(str string) string { | ||
| return fmt.Sprintf("%x", sha256.Sum256([]byte(str))) | ||
| } | ||
|
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| func uppercase(str string) string { | ||
| return strings.ToUpper(str) | ||
| } | ||
|
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| func lowercase(str string) string { | ||
| return strings.ToLower(str) | ||
| } | ||
|
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| func replace(find string, replace string, str string) string { | ||
| return strings.ReplaceAll(str, find, replace) | ||
| } | ||
|
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| func uuid() (string, error) { | ||
| return UUID.GenerateUUID() | ||
| } |
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