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Diffstat (limited to 'erts/emulator/beam/erl_bif_binary.c')
-rw-r--r--erts/emulator/beam/erl_bif_binary.c228
1 files changed, 149 insertions, 79 deletions
diff --git a/erts/emulator/beam/erl_bif_binary.c b/erts/emulator/beam/erl_bif_binary.c
index 63c82443c5..a635280ac1 100644
--- a/erts/emulator/beam/erl_bif_binary.c
+++ b/erts/emulator/beam/erl_bif_binary.c
@@ -984,7 +984,7 @@ BIF_RETTYPE binary_compile_pattern_1(BIF_ALIST_1)
#define DO_BIN_MATCH_BADARG -1
#define DO_BIN_MATCH_RESTART -2
-static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hslen,
+static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hsend,
Eterm type, Binary *bin, Eterm state_term,
Eterm *res_term)
{
@@ -1018,7 +1018,7 @@ static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hslen,
dump_bm_data(bm);
#endif
if (state_term == NIL) {
- bm_init_find_first_match(&state, hsstart, hslen);
+ bm_init_find_first_match(&state, hsstart, hsend);
} else {
Eterm *ptr = big_val(state_term);
memcpy(&state,ptr+2,sizeof(state));
@@ -1068,7 +1068,7 @@ static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hslen,
dump_ac_trie(act);
#endif
if (state_term == NIL) {
- ac_init_find_first_match(&state, act, hsstart, hslen);
+ ac_init_find_first_match(&state, act, hsstart, hsend);
} else {
Eterm *ptr = big_val(state_term);
memcpy(&state,ptr+2,sizeof(state));
@@ -1105,7 +1105,7 @@ static int do_binary_match(Process *p, Eterm subject, Uint hsstart, Uint hslen,
}
static int do_binary_matches(Process *p, Eterm subject, Uint hsstart,
- Uint hslen, Eterm type, Binary *bin,
+ Uint hsend, Eterm type, Binary *bin,
Eterm state_term, Eterm *res_term)
{
byte *bytes;
@@ -1138,7 +1138,7 @@ static int do_binary_matches(Process *p, Eterm subject, Uint hsstart,
dump_bm_data(bm);
#endif
if (state_term == NIL) {
- bm_init_find_all(&state, hsstart, hslen);
+ bm_init_find_all(&state, hsstart, hsend);
} else {
Eterm *ptr = big_val(state_term);
bm_restore_find_all(&state,(char *) (ptr+2));
@@ -1197,7 +1197,7 @@ static int do_binary_matches(Process *p, Eterm subject, Uint hsstart,
dump_ac_trie(act);
#endif
if (state_term == NIL) {
- ac_init_find_all(&state, act, hsstart, hslen);
+ ac_init_find_all(&state, act, hsstart, hsend);
} else {
Eterm *ptr = big_val(state_term);
ac_restore_find_all(&state,(char *) (ptr+2));
@@ -1246,6 +1246,67 @@ static int do_binary_matches(Process *p, Eterm subject, Uint hsstart,
return DO_BIN_MATCH_BADARG;
}
+static int parse_match_opts_list(Eterm l, Eterm bin, Uint *posp, Uint *endp)
+{
+ Eterm *tp;
+ Uint pos;
+ Sint len;
+ if (l == ((Eterm) 0) || l == NIL) {
+ /* Invalid term or NIL, we're called from binary_match(es)_2 or
+ have no options*/
+ *posp = 0;
+ *endp = binary_size(bin);
+ return 0;
+ } else if (is_list(l)) {
+ while(is_list(l)) {
+ Eterm t = CAR(list_val(l));
+ Uint orig_size;
+ if (!is_tuple(t)) {
+ goto badarg;
+ }
+ tp = tuple_val(t);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ if (tp[1] != am_scope || is_not_tuple(tp[2])) {
+ goto badarg;
+ }
+ tp = tuple_val(tp[2]);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ if (!term_to_Uint(tp[1], &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(tp[2], &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ if (-lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ pos -= len;
+ }
+ if (((pos + len) - len) != pos) {
+ goto badarg;
+ }
+ *endp = len + pos;
+ *posp = pos;
+ if ((orig_size = binary_size(bin)) < pos ||
+ orig_size < (*endp)) {
+ goto badarg;
+ }
+ l = CDR(list_val(l));
+ }
+ return 0;
+ } else {
+ badarg:
+ return 1;
+ }
+}
+
static BIF_RETTYPE binary_match_trap(BIF_ALIST_3)
{
int runres;
@@ -1289,7 +1350,8 @@ static BIF_RETTYPE binary_matches_trap(BIF_ALIST_3)
BIF_RETTYPE binary_match_3(BIF_ALIST_3)
{
- Uint hsstart, hslen;
+ Uint hsstart;
+ Uint hsend;
Eterm *tp;
Eterm type;
Binary *bin;
@@ -1300,42 +1362,10 @@ BIF_RETTYPE binary_match_3(BIF_ALIST_3)
if (is_not_binary(BIF_ARG_1)) {
goto badarg;
}
- if (BIF_ARG_3 == ((Eterm) 0)) {
- /* Invalid term, we're called from binary_match_2... */
- hsstart = 0;
- hslen = binary_size(BIF_ARG_1);
- } else if (is_list(BIF_ARG_3)) {
- Eterm l = BIF_ARG_3;
- while(is_list(l)) {
- Eterm t = CAR(list_val(l));
- if (!is_tuple(t)) {
- goto badarg;
- }
- tp = tuple_val(t);
- if (arityval(*tp) != 2) {
- goto badarg;
- }
- if (!term_to_Uint(tp[1], &hsstart) ||
- ((hsstart >> 16) >> 15) != 0) {
- goto badarg;
- }
- if (!term_to_Uint(tp[2], &hslen) ||
- ((hslen >> 16) >> 15) != 0) {
- goto badarg;
- }
- if (hslen < hsstart) {
- goto badarg;
- }
- if (hslen > binary_size(BIF_ARG_1)-1) {
- goto badarg; /* XXX:PaN or should we take as much as we have ? */
- }
- hslen = hslen + 1 - hsstart;
- l = CDR(list_val(l));
- }
- } else if (BIF_ARG_3 != NIL) {
+ if (parse_match_opts_list(BIF_ARG_3,BIF_ARG_1,&hsstart,&hsend)) {
goto badarg;
}
- if (hslen == 0) {
+ if (hsend == 0) {
BIF_RET(am_nomatch);
}
if (is_tuple(BIF_ARG_2)) {
@@ -1356,7 +1386,7 @@ BIF_RETTYPE binary_match_3(BIF_ALIST_3)
} else if (do_binary_match_compile(BIF_ARG_2,&type,&bin)) {
goto badarg;
}
- runres = do_binary_match(BIF_P,BIF_ARG_1,hsstart,hslen,type,bin,NIL,&result);
+ runres = do_binary_match(BIF_P,BIF_ARG_1,hsstart,hsend,type,bin,NIL,&result);
if (runres == DO_BIN_MATCH_RESTART && bin_term == NIL) {
Eterm *hp = HAlloc(BIF_P, PROC_BIN_SIZE);
bin_term = erts_mk_magic_binary_term(&hp, &MSO(BIF_P), bin);
@@ -1378,7 +1408,7 @@ BIF_RETTYPE binary_match_3(BIF_ALIST_3)
BIF_RETTYPE binary_matches_3(BIF_ALIST_3)
{
- Uint hsstart, hslen;
+ Uint hsstart, hsend;
Eterm *tp;
Eterm type;
Binary *bin;
@@ -1389,43 +1419,10 @@ BIF_RETTYPE binary_matches_3(BIF_ALIST_3)
if (is_not_binary(BIF_ARG_1)) {
goto badarg;
}
- if (BIF_ARG_3 == ((Eterm) 0)) {
- /* Invalid term, we're called from binary_matches_2... */
- hsstart = 0;
- hslen = binary_size(BIF_ARG_1);
- } else if (is_list(BIF_ARG_3)) {
- Eterm l = BIF_ARG_3;
- while(is_list(l)) {
- Eterm t = CAR(list_val(l));
- if (!is_tuple(t)) {
- goto badarg;
- }
- tp = tuple_val(t);
- if (arityval(*tp) != 2) {
- goto badarg;
- }
- if (!term_to_Uint(tp[1], &hsstart) ||
- ((hsstart >> 16) >> 15) != 0) {
- goto badarg;
- }
- if (!term_to_Uint(tp[2], &hslen) ||
- ((hslen >> 16) >> 15) != 0) {
- goto badarg;
- }
- if (hslen < hsstart) {
- goto badarg;
- }
- if (hslen > binary_size(BIF_ARG_1)-1) {
- goto badarg; /* XXX:PaN or should we take as much as we
- have ? */
- }
- hslen = hslen + 1 - hsstart;
- l = CDR(list_val(l));
- }
- } else if (BIF_ARG_3 != NIL) {
+ if (parse_match_opts_list(BIF_ARG_3,BIF_ARG_1,&hsstart,&hsend)) {
goto badarg;
}
- if (hslen == 0) {
+ if (hsend == 0) {
BIF_RET(am_nomatch);
}
if (is_tuple(BIF_ARG_2)) {
@@ -1446,7 +1443,7 @@ BIF_RETTYPE binary_matches_3(BIF_ALIST_3)
} else if (do_binary_match_compile(BIF_ARG_2,&type,&bin)) {
goto badarg;
}
- runres = do_binary_matches(BIF_P,BIF_ARG_1,hsstart,hslen,type,bin,
+ runres = do_binary_matches(BIF_P,BIF_ARG_1,hsstart,hsend,type,bin,
NIL,&result);
if (runres == DO_BIN_MATCH_RESTART && bin_term == NIL) {
Eterm *hp = HAlloc(BIF_P, PROC_BIN_SIZE);
@@ -1480,6 +1477,79 @@ BIF_RETTYPE binary_matches_2(BIF_ALIST_2)
return binary_matches_3(BIF_P,BIF_ARG_1,BIF_ARG_2,((Eterm) 0));
}
+BIF_RETTYPE binary_part_3(BIF_ALIST_3)
+{
+ Uint pos;
+ Sint len;
+ size_t orig_size;
+ Eterm orig;
+ Uint offset;
+ Uint bit_offset;
+ Uint bit_size;
+ Eterm* hp;
+ ErlSubBin* sb;
+
+ if (is_not_binary(BIF_ARG_1)) {
+ goto badarg;
+ }
+ if (!term_to_Uint(BIF_ARG_2, &pos)) {
+ goto badarg;
+ }
+ if (!term_to_Sint(BIF_ARG_3, &len)) {
+ goto badarg;
+ }
+ if (len < 0) {
+ Sint lentmp = -len;
+ if (-lentmp != len) {
+ goto badarg;
+ }
+ len = lentmp;
+ pos -= len;
+ }
+ if (((pos + len) - len) != pos) {
+ goto badarg;
+ }
+ if ((orig_size = binary_size(BIF_ARG_1)) < pos ||
+ orig_size < (pos + len)) {
+ goto badarg;
+ }
+
+
+
+ hp = HAlloc(BIF_P, ERL_SUB_BIN_SIZE);
+
+ ERTS_GET_REAL_BIN(BIF_ARG_1, orig, offset, bit_offset, bit_size);
+ sb = (ErlSubBin *) hp;
+ sb->thing_word = HEADER_SUB_BIN;
+ sb->size = len;
+ sb->offs = offset + pos;
+ sb->orig = orig;
+ sb->bitoffs = bit_offset;
+ sb->bitsize = 0;
+ sb->is_writable = 0;
+
+ BIF_RET(make_binary(sb));
+
+ badarg:
+ BIF_ERROR(BIF_P, BADARG);
+}
+
+BIF_RETTYPE binary_part_2(BIF_ALIST_2)
+{
+ Eterm *tp;
+ if (is_not_tuple(BIF_ARG_2)) {
+ goto badarg;
+ }
+ tp = tuple_val(BIF_ARG_2);
+ if (arityval(*tp) != 2) {
+ goto badarg;
+ }
+ return binary_part_3(BIF_P,BIF_ARG_1,tp[1], tp[2]);
+ badarg:
+ BIF_ERROR(BIF_P,BADARG);
+}
+
+
/*
* Hard debug functions (dump) for the search structures
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 11:16:08 +0000