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-rw-r--r--erts/emulator/beam/erl_unicode.c384
1 files changed, 383 insertions, 1 deletions
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index d01a3661f9..671c3c0cdf 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -463,7 +463,7 @@ L_Again: /* Restart with sublist, old listend was pushed on stack */
}
objp = list_val(ioterm);
obj = CAR(objp);
- if (!is_byte(obj))
+ if (!is_small(obj))
break;
}
} else if (is_nil(obj)) {
@@ -1813,3 +1813,385 @@ BIF_RETTYPE binary_to_existing_atom_2(BIF_ALIST_2)
{
return binary_to_atom(BIF_P, BIF_ARG_1, BIF_ARG_2, 1);
}
+
+/**********************************************************
+ * Simpler non-interruptable routines for UTF-8 and
+ * Windowish UTF-16 (restricted)
+ **********************************************************/
+static Sint simple_char_need(Eterm ioterm, int encoding)
+{
+ Eterm *objp;
+ Eterm obj;
+ DECLARE_ESTACK(stack);
+ Sint need = 0;
+
+ if (is_atom(ioterm)) {
+ Atom* ap;
+ int i;
+ ap = atom_tab(atom_val(ioterm));
+ switch (encoding) {
+ case ERL_FILENAME_LATIN1:
+ need = ap->len;
+ break;
+ case ERL_FILENAME_UTF8:
+ for (i = 0; i < ap->len; i++) {
+ need += (ap->name[i] >= 0x80) ? 2 : 1;
+ }
+ break;
+ case ERL_FILENAME_WIN_WCHAR:
+ need = 2*(ap->len);
+ break;
+ default:
+ need = -1;
+ }
+ DESTROY_ESTACK(stack);
+ return need;
+ }
+
+ if (is_nil(ioterm)) {
+ DESTROY_ESTACK(stack);
+ return need;
+ }
+ if (!is_list(ioterm)) {
+ DESTROY_ESTACK(stack);
+ return (Sint) -1;
+ }
+ /* OK a list, needs to be processed in order, handling each flat list-level
+ as they occur, just like io_list_to_binary would */
+ ESTACK_PUSH(stack,ioterm);
+ while (!ESTACK_ISEMPTY(stack)) {
+ ioterm = ESTACK_POP(stack);
+ if (is_nil(ioterm)) {
+ /* ignore empty lists */
+ continue;
+ }
+ if(is_list(ioterm)) {
+L_Again: /* Restart with sublist, old listend was pushed on stack */
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ for(;;) { /* loop over one flat list of bytes and binaries
+ until sublist or list end is encountered */
+ if (is_small(obj)) { /* Always small */
+ for(;;) {
+ Uint x = unsigned_val(obj);
+ switch (encoding) {
+ case ERL_FILENAME_LATIN1:
+ need += 1;
+ break;
+ case ERL_FILENAME_UTF8:
+ if (x < 0x80) {
+ need +=1;
+ } else if (x < 0x800) {
+ need += 2;
+ } else if (x < 0x10000) {
+ if ((x >= 0xD800 && x <= 0xDFFF) ||
+ (x == 0xFFFE) ||
+ (x == 0xFFFF)) { /* Invalid unicode range */
+ DESTROY_ESTACK(stack);
+ return ((Sint) -1);
+ }
+ need += 3;
+ } else if (x < 0x110000) {
+ need += 4;
+ } else {
+ DESTROY_ESTACK(stack);
+ return ((Sint) -1);
+ }
+ break;
+ case ERL_FILENAME_WIN_WCHAR:
+ if (x <= 0xffff) {
+ need += 2;
+ break;
+ } /* else fall throug to error */
+ default:
+ DESTROY_ESTACK(stack);
+ return ((Sint) -1);
+ }
+
+ /* everything else will give badarg later
+ in the process, so we dont check */
+ ioterm = CDR(objp);
+ if (!is_list(ioterm)) {
+ break;
+ }
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ if (!is_small(obj))
+ break;
+ }
+ } else if (is_nil(obj)) {
+ ioterm = CDR(objp);
+ if (!is_list(ioterm)) {
+ break;
+ }
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ } else if (is_list(obj)) {
+ /* push rest of list for later processing, start
+ again with sublist */
+ ESTACK_PUSH(stack,CDR(objp));
+ ioterm = obj;
+ goto L_Again;
+ } else {
+ DESTROY_ESTACK(stack);
+ return ((Sint) -1);
+ }
+ if (is_nil(ioterm) || !is_list(ioterm)) {
+ break;
+ }
+ } /* for(;;) */
+ } /* is_list(ioterm) */
+
+ if (!is_list(ioterm) && !is_nil(ioterm)) {
+ /* inproper list end */
+ DESTROY_ESTACK(stack);
+ return ((Sint) -1);
+ }
+ } /* while not estack empty */
+ DESTROY_ESTACK(stack);
+ return need;
+}
+
+static void simple_put_chars(Eterm ioterm, int encoding, byte *p)
+{
+ Eterm *objp;
+ Eterm obj;
+ DECLARE_ESTACK(stack);
+
+ if (is_atom(ioterm)) {
+ Atom* ap;
+ int i;
+ ap = atom_tab(atom_val(ioterm));
+ switch (encoding) {
+ case ERL_FILENAME_LATIN1:
+ for (i = 0; i < ap->len; i++) {
+ *p++ = ap->name[i];
+ }
+ break;
+ case ERL_FILENAME_UTF8:
+ for (i = 0; i < ap->len; i++) {
+ if(ap->name[i] < 0x80) {
+ *p++ = ap->name[i];
+ } else {
+ *p++ = (((ap->name[i]) >> 6) | ((byte) 0xC0));
+ *p++ = (((ap->name[i]) & 0x3F) | ((byte) 0x80));
+ }
+ }
+ break;
+ case ERL_FILENAME_WIN_WCHAR:
+ for (i = 0; i < ap->len; i++) {
+ /* Little endian */
+ *p++ = ap->name[i];
+ *p++ = 0;
+ }
+ break;
+ default:
+ ASSERT(0);
+ }
+ DESTROY_ESTACK(stack);
+ return;
+ }
+
+ if (is_nil(ioterm)) {
+ DESTROY_ESTACK(stack);
+ return;
+ }
+ ASSERT(is_list(ioterm));
+ /* OK a list, needs to be processed in order, handling each flat list-level
+ as they occur, just like io_list_to_binary would */
+ ESTACK_PUSH(stack,ioterm);
+ while (!ESTACK_ISEMPTY(stack)) {
+ ioterm = ESTACK_POP(stack);
+ if (is_nil(ioterm)) {
+ /* ignore empty lists */
+ continue;
+ }
+ if(is_list(ioterm)) {
+L_Again: /* Restart with sublist, old listend was pushed on stack */
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ for(;;) { /* loop over one flat list of bytes and binaries
+ until sublist or list end is encountered */
+ if (is_small(obj)) { /* Always small */
+ for(;;) {
+ Uint x = unsigned_val(obj);
+ switch (encoding) {
+ case ERL_FILENAME_LATIN1:
+ ASSERT( x < 256);
+ *p++ = (byte) x;
+ break;
+ case ERL_FILENAME_UTF8:
+ if (x < 0x80) {
+ *p++ = (byte) x;
+ }
+ else if (x < 0x800) {
+ *p++ = (((byte) (x >> 6)) |
+ ((byte) 0xC0));
+ *p++ = (((byte) (x & 0x3F)) |
+ ((byte) 0x80));
+ } else if (x < 0x10000) {
+ ASSERT(!((x >= 0xD800 && x <= 0xDFFF) ||
+ (x == 0xFFFE) ||
+ (x == 0xFFFF)));
+ *p++ = (((byte) (x >> 12)) |
+ ((byte) 0xE0));
+ *p++ = ((((byte) (x >> 6)) & 0x3F) |
+ ((byte) 0x80));
+ *p++ = (((byte) (x & 0x3F)) |
+ ((byte) 0x80));
+ } else {
+ ASSERT(x < 0x110000);
+ *p++ = (((byte) (x >> 18)) |
+ ((byte) 0xF0));
+ *p++ = ((((byte) (x >> 12)) & 0x3F) |
+ ((byte) 0x80));
+ *p++ = ((((byte) (x >> 6)) & 0x3F) |
+ ((byte) 0x80));
+ *p++ = (((byte) (x & 0x3F)) |
+ ((byte) 0x80));
+ }
+ break;
+ case ERL_FILENAME_WIN_WCHAR:
+ ASSERT(x <= 0xFFFF);
+ *p++ = (byte) (x & 0xFFU);
+ *p++ = (byte) ((x >> 8) & 0xFFU);
+ break;
+ default:
+ ASSERT(0);
+ }
+
+ /* everything else will give badarg later
+ in the process, so we dont check */
+ ioterm = CDR(objp);
+ if (!is_list(ioterm)) {
+ break;
+ }
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ if (!is_small(obj))
+ break;
+ }
+ } else if (is_nil(obj)) {
+ ioterm = CDR(objp);
+ if (!is_list(ioterm)) {
+ break;
+ }
+ objp = list_val(ioterm);
+ obj = CAR(objp);
+ } else if (is_list(obj)) {
+ /* push rest of list for later processing, start
+ again with sublist */
+ ESTACK_PUSH(stack,CDR(objp));
+ ioterm = obj;
+ goto L_Again;
+ } else {
+ ASSERT(0);
+ }
+ if (is_nil(ioterm) || !is_list(ioterm)) {
+ break;
+ }
+ } /* for(;;) */
+ } /* is_list(ioterm) */
+
+ ASSERT(is_list(ioterm) || is_nil(ioterm));
+ } /* while not estack empty */
+ DESTROY_ESTACK(stack);
+ return;
+}
+
+
+
+BIF_RETTYPE file_name2native_1(BIF_ALIST_1)
+{
+ int encoding = erts_get_native_filename_encoding();
+ Sint need;
+ Eterm bin_term;
+ byte* bin_p;
+ if ((need = simple_char_need(BIF_ARG_1,encoding)) < 0) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
+ bin_term = new_binary(BIF_P, 0, need);
+ bin_p = binary_bytes(bin_term);
+ simple_put_chars(BIF_ARG_1,encoding,bin_p);
+ BIF_RET(bin_term);
+}
+
+BIF_RETTYPE file_native2name_1(BIF_ALIST_1)
+{
+ Eterm real_bin;
+ Uint offset;
+ Uint size,num_chars;
+ Uint bitsize;
+ Uint bitoffs;
+ Eterm *hp;
+ byte *temp_alloc = NULL;
+ byte *bytes;
+ byte *err_pos;
+ Uint num_built; /* characters */
+ Uint num_eaten; /* bytes */
+ Eterm ret;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
+ size = binary_size(BIF_ARG_1);
+ ERTS_GET_REAL_BIN(BIF_ARG_1, real_bin, offset, bitoffs, bitsize);
+ if (bitsize != 0) {
+ BIF_ERROR(BIF_P,BADARG);
+ }
+ if (size == 0) {
+ BIF_RET(NIL);
+ }
+ switch (erts_get_native_filename_encoding()) {
+ case ERL_FILENAME_LATIN1:
+ goto simple;
+ case ERL_FILENAME_UTF8:
+ bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc);
+ if (analyze_utf8(bytes,size,&err_pos,&num_chars,NULL) != UTF8_OK) {
+ erts_free_aligned_binary_bytes(temp_alloc);
+ goto simple;
+ }
+ num_built = 0;
+ num_eaten = 0;
+ ret = do_utf8_to_list(BIF_P, num_chars, bytes, size, num_chars, &num_built, &num_eaten, NIL);
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BIF_RET(ret);
+ case ERL_FILENAME_WIN_WCHAR:
+ if ((size % 2) != 0) {
+ goto simple;
+ }
+ bytes = erts_get_aligned_binary_bytes(BIF_ARG_1, &temp_alloc);
+ hp = HAlloc(BIF_P, size);
+ ret = NIL;
+ bytes += size-1;
+ while (size > 0) {
+ Uint x = ((Uint) *bytes--) << 8;
+ x |= ((Uint) *bytes--);
+ ret = CONS(hp,make_small(x),ret);
+ size -= 2;
+ }
+ erts_free_aligned_binary_bytes(temp_alloc);
+ BIF_RET(ret);
+ default:
+ goto simple;
+ }
+ simple:
+ hp = HAlloc(BIF_P, 2 * size);
+ bytes = binary_bytes(real_bin)+offset;
+
+ BIF_RET(erts_bin_bytes_to_list(NIL, hp, bytes, size, bitoffs));
+}
+
+BIF_RETTYPE file_native_name_encoding_0(BIF_ALIST_0)
+{
+ switch (erts_get_native_filename_encoding()) {
+ case ERL_FILENAME_LATIN1:
+ BIF_RET(am_latin1);
+ case ERL_FILENAME_UTF8:
+ BIF_RET(am_utf8);
+ case ERL_FILENAME_WIN_WCHAR:
+ BIF_RET(am_win_wchar);
+ default:
+ BIF_RET(am_undefined);
+ }
+}
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