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libjsonevt/jsonevt.c  view on Meta::CPAN

JSONEVT_INLINE_FUNC uint
jsonevt_get_line_num(jsonevt_ctx * ctx) {
    return CUR_LINE(ctx);
}
*/

static int
check_bom(json_context * ctx) {
    uint len = ctx->len;
    const char * buf = ctx->buf;
    char * error_fmt = "found BOM for unsupported %s encoding -- this parser requires UTF-8";

    /* check for UTF BOM signature */
    /* The signature, if present, is the U+FEFF character encoded the
       same as the rest of the buffer.
       See <http://www.unicode.org/unicode/faq/utf_bom.html#25>.
    */
    if (len >= 1) {
        switch (*buf) {

          case '\xEF': /* maybe utf-8 */
              if (len >= 3 && MEM_EQ(buf, "\xEF\xBB\xBF", 3)) {
                  /* UTF-8 signature */

libjsonevt/uni.h  view on Meta::CPAN

#define UNI_DO_CPLUSPLUS_WRAP_END
#endif

UNI_DO_CPLUSPLUS_WRAP_BEGIN

/* if the only set bits are in the lower 7, then the byte sequence in utf-8 is the same as ascii */
#define UNICODE_IS_INVARIANT(v) (((uint32_t)v) < 0x80)

/* the byte order mark is the code point 0xFEFF */
/* encoded as utf-8: "\xef\xbb\xbf" */
#define UNICODE_IS_BOM(v) ((v) == 0xFEFF);

UNI_DO_CPLUSPLUS_WRAP_END

#endif /* UNI_H */