UV
Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen)
{
PERL_ARGS_ASSERT_UTF8_TO_UVUNI;
return NATIVE_TO_UNI(valid_utf8_to_uvchr(s, retlen));
}
STATIC bool
S_grok_bslash_o(pTHX_ const char *s,
UV *uv,
STRLEN *len,
const char** error_msg,
const bool output_warning)
{
/* Documentation to be supplied when interface nailed down finally
* This returns FALSE if there is an error which the caller need not recover
* from; , otherwise TRUE. In either case the caller should look at *len
* On input:
* s points to a string that begins with 'o', and the previous character
* was a backslash.
* uv points to a UV that will hold the output value, valid only if the
* return from the function is TRUE
* len on success will point to the next character in the string past the
* end of this construct.
* on failure, it will point to the failure
* error_msg is a pointer that will be set to an internal buffer giving an
* error message upon failure (the return is FALSE). Untouched if
* function succeeds
* output_warning says whether to output any warning messages, or suppress
* them
*/
const char* e;
STRLEN numbers_len;
I32 flags = PERL_SCAN_ALLOW_UNDERSCORES
| PERL_SCAN_DISALLOW_PREFIX
/* XXX Until the message is improved in grok_oct, handle errors
* ourselves */
| PERL_SCAN_SILENT_ILLDIGIT;
PERL_ARGS_ASSERT_GROK_BSLASH_O;
assert(*s == 'o');
s++;
if (*s != '{') {
*len = 1; /* Move past the o */
*error_msg = "Missing braces on \\o{}";
return FALSE;
}
e = strchr(s, '}');
if (!e) {
*len = 2; /* Move past the o{ */
*error_msg = "Missing right brace on \\o{";
return FALSE;
}
/* Return past the '}' no matter what is inside the braces */
*len = e - s + 2; /* 2 = 1 for the o + 1 for the '}' */
s++; /* Point to first digit */
numbers_len = e - s;
if (numbers_len == 0) {
*error_msg = "Number with no digits";
return FALSE;
}
*uv = NATIVE_TO_UNI(grok_oct(s, &numbers_len, &flags, NULL));
/* Note that if has non-octal, will ignore everything starting with that up
* to the '}' */
if (output_warning && numbers_len != (STRLEN) (e - s)) {
Perl_ck_warner(aTHX_ packWARN(WARN_DIGIT),
/* diag_listed_as: Non-octal character '%c'. Resolved as "%s" */
"Non-octal character '%c'. Resolved as \"\\o{%.*s}\"",
*(s + numbers_len),
(int) numbers_len,
s);
}
return TRUE;
}
