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Minor utf8.c improvements

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* src/utf8.c: Minor rephrases for -1.
This commit is contained in:
Paul Eggert
2024-08-02 23:32:42 -07:00
parent 51c841b927
commit c26c2ea2e9
1 changed files with 4 additions and 3 deletions
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7
src/utf8.c
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@@ -35,7 +35,8 @@
# define iconv_open(tocode, fromcode) ((iconv_t) -1) # define iconv_open(tocode, fromcode) ((iconv_t) -1)
# undef iconv # undef iconv
# define iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft) (errno = ENOSYS, (size_t) -1) # define iconv(cd, inbuf, inbytesleft, outbuf, outbytesleft) \
(errno = ENOSYS, SIZE_MAX)
# undef iconv_close # undef iconv_close
# define iconv_close(cd) 0 # define iconv_close(cd) 0
@@ -77,7 +78,7 @@ utf8_convert (bool to_utf, char const *input, char **output)
*output = xstrdup (input); *output = xstrdup (input);
return true; return true;
} }
else if (cd == (iconv_t)-1) else if (cd == (iconv_t) -1)
return false; return false;
inlen = strlen (input) + 1; inlen = strlen (input) + 1;
@@ -93,7 +94,7 @@ utf8_convert (bool to_utf, char const *input, char **output)
implementation-defined conversion on this character." It will "update implementation-defined conversion on this character." It will "update
the variables pointed to by the arguments to reflect the extent of the the variables pointed to by the arguments to reflect the extent of the
conversion and return the number of non-identical conversions performed". conversion and return the number of non-identical conversions performed".
On error, it returns -1. On error, it returns SIZE_MAX.
In other words, non-zero return always indicates failure, either because In other words, non-zero return always indicates failure, either because
the input was not fully converted, or because it was converted in a the input was not fully converted, or because it was converted in a
non-reversible way. non-reversible way.