diff options
Diffstat (limited to 'iconv/iconv_open.c')
| -rw-r--r-- | iconv/iconv_open.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/iconv/iconv_open.c b/iconv/iconv_open.c index dadf3d9dbb..82802b7451 100644 --- a/iconv/iconv_open.c +++ b/iconv/iconv_open.c @@ -18,19 +18,63 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <ctype.h> #include <errno.h> #include <iconv.h> +#include <string.h> #include <gconv.h> +static inline void +strip (char *s) +{ + int slash_count = 0; + char *wp; + wp = s; + + while (*s != '\0') + { + if (isalnum (*s) || *s == '_' || *s == '-' || *s == '.') + *wp++ = *s; + else if (*s == '/') + { + if (++slash_count == 2) + break; + *wp++ = '/'; + } + ++s; + } + + while (slash_count++ < 2) + *wp++ = '/'; + + *wp = '\0'; +} + + iconv_t iconv_open (const char *tocode, const char *fromcode) { + char *tocode_conv; + char *fromcode_conv; + size_t tocode_len; + size_t fromcode_len; gconv_t cd; int res; - res = __gconv_open (tocode, fromcode, &cd); + /* Normalize the name. We remove all characters beside alpha-numeric, + '_', '-', '/', and '.'. */ + tocode_len = strlen (tocode); + tocode_conv = alloca (tocode_len + 3); + strip (memcpy (tocode_conv, tocode, tocode_len + 1)); + + fromcode_len = strlen (fromcode); + fromcode_conv = alloca (fromcode_len + 3); + strip (memcpy (fromcode_conv, fromcode, fromcode_len + 1)); + + res = __gconv_open (tocode_conv[2] == '\0' ? tocode : tocode_conv, + fromcode_conv[2] == '\0' ? fromcode, fromcode_conv, &cd); if (res != GCONV_OK) { |