| package main |
|
|
| import ( |
| "fmt" |
| "strings" |
| ) |
|
|
| func repairInvalidJSONBackslashes(s string) string { |
| if !strings.Contains(s, "\\") { |
| return s |
| } |
| var out strings.Builder |
| out.Grow(len(s) + 10) |
| runes := []rune(s) |
| for i := 0; i < len(runes); i++ { |
| if runes[i] == '\\' { |
| if i+1 < len(runes) { |
| next := runes[i+1] |
| switch next { |
| case '"', '\\', '/', 'b', 'f', 'n', 'r', 't': |
| out.WriteRune('\\') |
| out.WriteRune(next) |
| i++ |
| continue |
| case 'u': |
| if i+5 < len(runes) { |
| isHex := true |
| for j := 1; j <= 4; j++ { |
| r := runes[i+1+j] |
| if (r < '0' || r > '9') && (r < 'a' || r > 'f') && (r < 'A' || r > 'F') { |
| isHex = false |
| break |
| } |
| } |
| if isHex { |
| out.WriteRune('\\') |
| out.WriteRune('u') |
| for j := 1; j <= 4; j++ { |
| out.WriteRune(runes[i+1+j]) |
| } |
| i += 5 |
| continue |
| } |
| } |
| } |
| } |
| |
| out.WriteString("\\\\") |
| } else { |
| out.WriteRune(runes[i]) |
| } |
| } |
| return out.String() |
| } |
|
|
| func main() { |
| tests := []struct { |
| input string |
| expected string |
| }{ |
| {`{"path": "C:\Users\name"}`, `{"path": "C:\\Users\\name"}`}, |
| {`{"cmd": "cd D:\git_codes"}`, `{"cmd": "cd D:\\git_codes"}`}, |
| {`{"text": "line1\nline2"}`, `{"text": "line1\nline2"}`}, |
| {`{"path": "D:\\back\\slash"}`, `{"path": "D:\\back\\slash"}`}, |
| {`{"unicode": "\u2705"}`, `{"unicode": "\u2705"}`}, |
| {`{"invalid_u": "\u123"}`, `{"invalid_u": "\\u123"}`}, |
| } |
|
|
| for _, tt := range tests { |
| got := repairInvalidJSONBackslashes(tt.input) |
| if got != tt.expected { |
| fmt.Printf("FAIL: input=%s\n got=%s\n exp=%s\n", tt.input, got, tt.expected) |
| } else { |
| fmt.Printf("PASS: input=%s\n", tt.input) |
| } |
| } |
| } |
|
|
