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55 lines
889 B
Go
55 lines
889 B
Go
package main
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import (
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"strings"
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)
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func isHexDigit(ch byte) bool {
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return (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'f') || (ch >= 'A' && ch <= 'F')
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}
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func isDigit(ch byte) bool {
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return ch >= '0' && ch <= '9'
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}
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func max(i, j int) int {
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if i > j {
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return i
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}
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return j
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}
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func regexCase(code string) (string, bool) {
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if strings.HasSuffix(code, "/i") {
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return code[:len(code)-2], true
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} else if strings.HasSuffix(code, "/") {
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return code[:len(code)-1], false
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} else {
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return code, true
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}
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}
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func flex(width int, a, b string) string {
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return a + strings.Repeat(" ", max(1, width-len(a)-len(b))) + b
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}
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func safeSlice(b []byte, start, end int) []byte {
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length := len(b)
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if start > length {
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start = length
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}
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if end > length {
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end = length
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}
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if start < 0 {
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start = 0
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}
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if end < 0 {
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end = 0
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}
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if start > end {
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start = end
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}
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return b[start:end]
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}
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