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-rw-r--r--erts/emulator/beam/erl_unicode.c38
1 files changed, 32 insertions, 6 deletions
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index 6d8e9ccd90..4f26f078ce 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -2104,7 +2104,11 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
}
-
+/*
+ * This internal bif converts a filename to whatever format is suitable for the file driver
+ * It also adds zero termination so that prim_file neednt bother with the character encoding
+ * of the file driver
+ */
BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
{
int encoding = erts_get_native_filename_encoding();
@@ -2119,28 +2123,36 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
Uint unipoint;
/* Uninterpreted encoding except if windows widechar, in case we convert from
utf8 to win_wchar */
+ size = binary_size(BIF_ARG_1);
+ bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc);
if (encoding != ERL_FILENAME_WIN_WCHAR) {
- BIF_RET(BIF_ARG_1);
+ /*Add 0 termination only*/
+ bin_term = new_binary(BIF_P, NULL, size+1);
+ bin_p = binary_bytes(bin_term);
+ memcpy(bin_p,bytes,size);
+ bin_p[size]=0;
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BIF_RET(bin_term);
}
/* In a wchar world, the emulator flags only affect how
binaries are interpreted when sent from the user. */
/* Determine real length and create a new binary */
- size = binary_size(BIF_ARG_1);
- bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc);
if (analyze_utf8(bytes,size,&err_pos,&num_chars,NULL) != UTF8_OK ||
erts_get_user_requested_filename_encoding() == ERL_FILENAME_LATIN1) {
/* What to do now? Maybe latin1, so just take byte for byte instead */
- bin_term = new_binary(BIF_P, 0, size*2);
+ bin_term = new_binary(BIF_P, 0, (size+1)*2);
bin_p = binary_bytes(bin_term);
while (size--) {
*bin_p++ = *bytes++;
*bin_p++ = 0;
}
+ *bin_p++ = 0;
+ *bin_p++ = 0;
erts_free_aligned_binary_bytes(temp_alloc);
BIF_RET(bin_term);
}
/* OK, UTF8 ok, number of characters is in num_chars */
- bin_term = new_binary(BIF_P, 0, num_chars*2);
+ bin_term = new_binary(BIF_P, 0, (num_chars+1)*2);
bin_p = binary_bytes(bin_term);
while (num_chars--) {
if (((*bytes) & ((byte) 0x80)) == 0) {
@@ -2170,6 +2182,9 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
*bin_p++ = (byte) (unipoint & 0xFF);
*bin_p++ = (byte) ((unipoint >> 8) & 0xFF);
}
+ /* zero termination */
+ *bin_p++ = 0;
+ *bin_p++ = 0;
erts_free_aligned_binary_bytes(temp_alloc);
BIF_RET(bin_term);
} /* binary */
@@ -2178,9 +2193,19 @@ BIF_RETTYPE prim_file_internal_name2native_1(BIF_ALIST_1)
if ((need = simple_char_need(BIF_ARG_1,encoding)) < 0) {
BIF_ERROR(BIF_P,BADARG);
}
+ if (encoding == ERL_FILENAME_WIN_WCHAR) {
+ need += 2;
+ } else {
+ ++need;
+ }
+
bin_term = new_binary(BIF_P, 0, need);
bin_p = binary_bytes(bin_term);
simple_put_chars(BIF_ARG_1,encoding,bin_p);
+ bin_p[need-1] = 0;
+ if (encoding == ERL_FILENAME_WIN_WCHAR) {
+ bin_p[need-2] = 0;
+ }
BIF_RET(bin_term);
}
@@ -2243,6 +2268,7 @@ BIF_RETTYPE prim_file_internal_native2name_1(BIF_ALIST_1)
Uint x = ((Uint) *bytes--) << 8;
x |= ((Uint) *bytes--);
ret = CONS(hp,make_small(x),ret);
+ hp += 2;
size -= 2;
}
erts_free_aligned_binary_bytes(temp_alloc);