Escape token for output as JSON string.
| 165 | |
| 166 | // Escape token for output as JSON string. |
| 167 | static void JSON_escape(FILE *out, const char *p, unsigned len) |
| 168 | { |
| 169 | for (; len; len--, p++) { |
| 170 | char c = *p; |
| 171 | // A " which is not yet escaped, will be escaped: |
| 172 | if (c == '"') |
| 173 | // Insert a backslash before the double quote: |
| 174 | fputc('\\', out); |
| 175 | else |
| 176 | // A \ which is not followed by the JSON expected, is escaped |
| 177 | if (c == '\\') { |
| 178 | const char anything_but_valid_escape = '0'; // [^\\\"bfnrt] |
| 179 | const char peek = len ? *(p+1) : anything_but_valid_escape; // look ahead |
| 180 | fputc('\\', out); |
| 181 | if (strchr("\\\"bfnrt", peek)) { |
| 182 | // An valid JSON escape. Output it and skip peek: |
| 183 | c = peek; |
| 184 | p++; |
| 185 | len--; |
| 186 | } |
| 187 | //else Not a correct JSON escape, a standalone backslash; double it. |
| 188 | } |
| 189 | //else Not a " or \; default action. |
| 190 | fputc(c, out); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | // Escape token for output as CSV string. |
| 195 | static void CSV_escape(FILE *out, const char *p, unsigned len) |