diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-kv/format/util.go')
-rw-r--r-- | vendor/codeberg.org/gruf/go-kv/format/util.go | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/codeberg.org/gruf/go-kv/format/util.go b/vendor/codeberg.org/gruf/go-kv/format/util.go new file mode 100644 index 000000000..c4c42329e --- /dev/null +++ b/vendor/codeberg.org/gruf/go-kv/format/util.go @@ -0,0 +1,56 @@ +package format + +import ( + "strings" + "unsafe" +) + +// ContainsSpaceOrTab checks if "s" contains space or tabs. +func ContainsSpaceOrTab(s string) bool { + if i := strings.IndexByte(s, ' '); i != -1 { + return true // note using indexbyte as it is ASM. + } else if i := strings.IndexByte(s, '\t'); i != -1 { + return true + } + return false +} + +// ContainsDoubleQuote checks if "s" contains a double quote. +func ContainsDoubleQuote(s string) bool { + return (strings.IndexByte(s, '"') != -1) +} + +// AppendEscape will append 's' to 'dst' and escape any double quotes. +func AppendEscape(dst []byte, str string) []byte { + var delim bool + for i := range str { + if str[i] == '\\' && !delim { + // Set delim flag + delim = true + continue + } else if str[i] == '"' && !delim { + // Append escaped double quote + dst = append(dst, `\"`...) + continue + } else if delim { + // Append skipped slash + dst = append(dst, `\`...) + delim = false + } + + // Append char as-is + dst = append(dst, str[i]) + } + return dst +} + +// isNil will safely check if 'v' is nil without dealing with weird Go interface nil bullshit. +func isNil(i interface{}) bool { + type eface struct{ _type, data unsafe.Pointer } //nolint + return (*(*eface)(unsafe.Pointer(&i))).data == nil //nolint +} + +// b2s converts a byteslice to string without allocation. +func b2s(b []byte) string { + return *(*string)(unsafe.Pointer(&b)) +} |