diff options
Diffstat (limited to 'src/mod_irc/iconv_erl.c')
| -rw-r--r-- | src/mod_irc/iconv_erl.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/mod_irc/iconv_erl.c b/src/mod_irc/iconv_erl.c index e845635b3..f301bd537 100644 --- a/src/mod_irc/iconv_erl.c +++ b/src/mod_irc/iconv_erl.c @@ -59,6 +59,7 @@ static int iconv_erl_control(ErlDrvData drv_data, ErlDrvBinary *b; char *from, *to, *string, *stmp, *rstring, *rtmp; iconv_t cd; + int invalid_utf8_as_latin1 = 0; ei_decode_version(buf, &index, &i); ei_decode_tuple_header(buf, &index, &i); @@ -74,6 +75,15 @@ static int iconv_erl_control(ErlDrvData drv_data, stmp = string = malloc(size + 1); ei_decode_string(buf, &index, string); + /* Special mode: parse as UTF-8 if possible; otherwise assume it's + Latin-1. Makes no difference when encoding. */ + if (strcmp(from, "utf-8+latin-1") == 0) { + from[5] = '\0'; + invalid_utf8_as_latin1 = 1; + } + if (strcmp(to, "utf-8+latin-1") == 0) { + to[5] = '\0'; + } cd = iconv_open(to, from); if (cd == (iconv_t) -1) { @@ -95,6 +105,12 @@ static int iconv_erl_control(ErlDrvData drv_data, rtmp = rstring = malloc(avail); while (inleft > 0) { if (iconv(cd, &stmp, &inleft, &rtmp, &outleft) == (size_t) -1) { + if (invalid_utf8_as_latin1 && (*stmp & 0x80) && outleft >= 2) { + /* Encode one byte of (assumed) Latin-1 into two bytes of UTF-8 */ + *rtmp++ = 0xc0 | ((*stmp & 0xc0) >> 6); + *rtmp++ = 0x80 | (*stmp & 0x3f); + outleft -= 2; + } stmp++; inleft--; } |