diff options
Diffstat (limited to 'lib/erl_interface/src/encode/encode_atom.c')
| -rw-r--r-- | lib/erl_interface/src/encode/encode_atom.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/lib/erl_interface/src/encode/encode_atom.c b/lib/erl_interface/src/encode/encode_atom.c index 32f5ae2af1..46d34c3bf0 100644 --- a/lib/erl_interface/src/encode/encode_atom.c +++ b/lib/erl_interface/src/encode/encode_atom.c @@ -25,7 +25,7 @@ static int verify_ascii_atom(const char* src, int slen); static int verify_utf8_atom(const char* src, int slen); - +static int is_latin1_as_utf8(const char *p, int len); int ei_encode_atom(char *buf, int *index, const char *p) { @@ -45,15 +45,15 @@ int ei_encode_atom_len(char *buf, int *index, const char *p, int len) } int ei_encode_atom_as(char *buf, int *index, const char *p, - enum erlang_char_encoding from_enc, - enum erlang_char_encoding to_enc) + erlang_char_encoding from_enc, + erlang_char_encoding to_enc) { return ei_encode_atom_len_as(buf, index, p, strlen(p), from_enc, to_enc); } int ei_encode_atom_len_as(char *buf, int *index, const char *p, int len, - enum erlang_char_encoding from_enc, - enum erlang_char_encoding to_enc) + erlang_char_encoding from_enc, + erlang_char_encoding to_enc) { char *s = buf + *index; char *s0 = s; @@ -63,6 +63,14 @@ int ei_encode_atom_len_as(char *buf, int *index, const char *p, int len, return -1; } + if (to_enc == (ERLANG_LATIN1 | ERLANG_UTF8)) { + if (from_enc == ERLANG_UTF8) { + to_enc = is_latin1_as_utf8(p, len) ? ERLANG_LATIN1 : ERLANG_UTF8; + } + else { + to_enc = from_enc; + } + } switch(to_enc) { case ERLANG_LATIN1: if (buf) { @@ -138,7 +146,7 @@ int ei_encode_atom_len_as(char *buf, int *index, const char *p, int len, int ei_internal_put_atom(char** bufp, const char* p, int slen, - enum erlang_char_encoding to_enc) + erlang_char_encoding to_enc) { int ix = 0; if (ei_encode_atom_len_as(*bufp, &ix, p, slen, ERLANG_UTF8, to_enc) < 0) @@ -148,7 +156,7 @@ ei_internal_put_atom(char** bufp, const char* p, int slen, } -int verify_ascii_atom(const char* src, int slen) +static int verify_ascii_atom(const char* src, int slen) { while (slen > 0) { if ((src[0] & 0x80) != 0) return -1; @@ -158,7 +166,7 @@ int verify_ascii_atom(const char* src, int slen) return 0; } -int verify_utf8_atom(const char* src, int slen) +static int verify_utf8_atom(const char* src, int slen) { int num_chars = 0; @@ -188,3 +196,13 @@ int verify_utf8_atom(const char* src, int slen) return 0; } +/* Only latin1 code points in utf8 string? + */ +static int is_latin1_as_utf8(const char *p, int len) +{ + int i; + for (i=0; i<len; i++) { + if ((unsigned char)p[i] > 0xC3) return 0; + } + return 1; +} |