c_escape

A small unicode (UTF-8 + surrogate pairs) escaper and unescaper for C. Both C and JSON flavored escaping are available.

const char* str = "français\n日本 한국어";
printf("%s\n", str);
// français 
// 日本 한국어

// Escape the unicode!
char* escaped = escape(str, CE_JSON);
printf("%s\n", escaped);
// fran\u00E7ais\n\u65E5\u672C \uD55C\uAD6D\uC5B4

// Unescape the unicode!
char* unescaped = unescape(escaped, CE_JSON, NULL);
printf("%s\n", unescaped);
// français 
// 日本 한국어

free(escaped);
free(unescaped);

Warning

Invalid UTF-8/UTF-16 may cause escape to not work properly, and unescape to return NULL.

Flavor comparison

	CE_C	CE_JSON
\a	✔️	❌
\b	✔️	✔️
\e	✔️	❌
\f	✔️	✔️
\n	✔️	✔️
\r	✔️	✔️
\t	✔️	✔️
\u0000	✔️	✔️
\v	✔️	❌
\x00	✔️	❌
\'	✔️	✔️
\"	✔️	✔️
\\	✔️	✔️

Usage

Just plop the c_escape.h and c_escape.c file into your project and #include it! Make sure that c_escape.c is compiled.

Contributing

Of course! Just make a pull request.

Issues

If you find any bugs, just create an issue. I will fix it as soon as I can.