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* Copyright year bump 2021.Kaz Kylheku2021-01-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * METALICENSE: 2020 copyrights bumped to 2021. Added note about SHA-256 routines from Colin Percival. * LICENSE, LICENSE-CYG, Makefile, alloca.h, args.c, args.h, arith.c, arith.h, buf.c, buf.h, cadr.c, cadr.h, chksum.c, chksum.h, chksums/crc32.c, chksums/crc32.h, combi.c, combi.h, configure, debug.c, debug.h, eval.c, eval.h, ffi.c, ffi.h, filter.c, filter.h, ftw.c, ftw.h, gc.c, gc.h, glob.c, glob.h, hash.c, hash.h, itypes.c, itypes.h, jmp.S, lex.yy.c.shipped, lib.c, lib.h, linenoise/linenoise.c, linenoise/linenoise.h, lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h, parser.l, parser.y, protsym.c, rand.c, rand.h, regex.c, regex.h, share/txr/stdlib/asm.tl, share/txr/stdlib/awk.tl, share/txr/stdlib/build.tl, share/txr/stdlib/cadr.tl, share/txr/stdlib/compiler.tl, share/txr/stdlib/conv.tl, share/txr/stdlib/copy-file.tl, share/txr/stdlib/debugger.tl, share/txr/stdlib/defset.tl, share/txr/stdlib/doloop.tl, share/txr/stdlib/each-prod.tl, share/txr/stdlib/error.tl, share/txr/stdlib/except.tl, share/txr/stdlib/ffi.tl, share/txr/stdlib/getopts.tl, share/txr/stdlib/getput.tl, share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl, share/txr/stdlib/keyparams.tl, share/txr/stdlib/op.tl, share/txr/stdlib/package.tl, share/txr/stdlib/param.tl, share/txr/stdlib/path-test.tl, share/txr/stdlib/place.tl, share/txr/stdlib/pmac.tl, share/txr/stdlib/quips.tl, share/txr/stdlib/save-exe.tl, share/txr/stdlib/socket.tl, share/txr/stdlib/stream-wrap.tl, share/txr/stdlib/struct.tl, share/txr/stdlib/tagbody.tl, share/txr/stdlib/termios.tl, share/txr/stdlib/trace.tl, share/txr/stdlib/txr-case.tl, share/txr/stdlib/type.tl, share/txr/stdlib/vm-param.tl, share/txr/stdlib/with-resources.tl, share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl, signal.c, signal.h, socket.c, socket.h, stream.c, stream.h, struct.c, struct.h, strudel.c, strudel.h, sysif.c, sysif.h, syslog.c, syslog.h, termios.c, termios.h, time.c, time.h, tree.c, tree.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h, vm.c, vm.h, vmop.h, win/cleansvg.txr, y.tab.c.shipped: Copyright year bumped to 2021.
* listener: fix completion regression.Kaz Kylheku2020-08-121-1/+1
| | | | | | | | | This problem was was introduced in TXR 239 in commit 1f54ad5cc1d384d0818a6bf6cec20a95ecc5a5ae. The completion for package-qualified symbols and keywords is wonky. * parser.c (find_matching_syms): The first argument to scat is the separator, so we must specify it as nil.
* listener: new *-1, *-2 ... *-20 macros.Kaz Kylheku2020-07-111-0/+13
| | | | | | | | | | | | * arith.h (minus_s): Declared. * eval.c (reg_symacro): Changing to external linkage. * eval.h (macro_time_s, reg_symacro): Declared. * parser.c (repl): Bind the *-1 to *-20 symbol macros. * txr.1: Documented.
* c_num: now takes self argument.Kaz Kylheku2020-06-291-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The c_num and c_unum functions now take a self argument for identifying the calling function. This requires changes in a large number of places. In a few places, additional functions acquire a self argument. The ffi module has the most extensive example of this. Some functions mention their name in a larger string, or have scattered literals giving their name; with the introduction of the self local variable, these are replaced by references to self. In the following changelog, the notation TS stands for "take self argument", meaning that the functions acquires a new "val self" argument. The notation DS means "define self": the functions in question defines a self variable, which they pass down. The notation PS means that the functions pass down an existing self variable to functions that now require it. * args.h (args_count): TS. * arith.c (c_unum, c_num): TS. (toint, exptv): DS. * buf.c (buf_check_len, buf_check_alloc_size, buf_check_index, buf_do_set_len, replace_buf, buf_put_buf, buf_put_i8, buf_put_u8, buf_put_char, buf_put_uchar, buf_get_bytes, buf_get_i8, buf_get_u8, buf_get_cptr, buf_strm_get_byte_callback, buf_strm_unget_byte, buf_swap32, str_buf, buf_int, buf_uint, int_buf, uint_buf): PS. (make_duplicate_buf, buf_shrink, sub_buf, buf_print, buf_pprint): DS. * chskum.c (sha256_stream_impl, sha256_buf, crc32_buf, md5_stream_impl, md5_buf): TS. (chksum_ensure_buf, sha256_stream, sha256, sha256_hash, md5_stream, md5, md5_hash): PS. (crc32_stream): DS. * combi.c (perm_while_fun, perm_gen_fun_common, perm_str_gen_fun, rperm_gen_fun, comb_vec_gen_fun, comb_str_gen_fun, rcomb_vec_gen_fun, rcomb_str_gen_fun): DS. * diff.c (dbg_clear, dbg_set, dbg_restore): DS. * eval.c (do_eval, gather_free_refs, maprodv, maprendv, maprodo, do_args_apf, do_args_ipf): DS. (op_dwim, me_op, map_common): PS. (prod_common): TS. * ffi.c (struct txr_ffi_type): release member TS. (make_ffi_type_pointer): PS and release argument TS. (ffi_varray_dynsize, ffi_array_in, ffi_array_put_common, ffi_array_get_common, ffi_varray_in, ffi_varray_null_term): PS. (ffi_simple_release, ffi_ptr_in_release, ffi_struct_release, ffi_wchar_array_get, ffi_array_release_common, ffi_array_release, ffi_varray_release): TS. (ffi_float_put, double_put, ffi_be_i16_put, ffi_be_u16_put, ffi_le_i16_put, ffi_le_u16_put, ffi_be_i32_put, ffi_be_u32_put, ffi_le_i32_put, ffi_sbit_put, ffi_ubit_put, ffi_buf_d_put, make_ffi_type_array, make_ffi_type_enum, ffi_type_compile, make_ffi_type_desc, ffi_make_call_desc, ffi_call_wrap, ffi_closure_dispatch_save, ffi_put_into, ffi_in, ffi_get, ffi_put, carray_set_length, carray_blank, carray_buf, carray_buf_sync, carray_cptr, carray_refset, carray_sub, carray_replace, carray_uint, carray_int): PS. (carray_vec, carray_list): DS. * filter.c (url_encode, url_decode, base64_stream_enc_impl): DS. * ftw.c (ftw_callback, ftw_wrap): DS. * gc.c (mark_obj, gc_set_delta): DS. * glob.c (glob_wrap): DS. * hash.c (equal_hash, eql_hash, eq_hash, do_make_hash, hash_equal, set_hash_traversal_limit, gen_hash_seed): DS. * itypes.c (c_i8, c_u8, c_i16, c_u16, c_i32, c_u32, c_i64, c_u64, c_short, c_ushort, c_int, c_uint, c_long, c_ulong): PS. * lib.c (seq_iter_rewind): TS and becomes internal. (seq_iter_init_with_info, seq_setpos, replace_str, less, replace_vec, diff, isec, obj_print_impl): PS. (nthcdr, equal, mkstring, mkustring, upcase_str, downcase_str, search_str, sub_str, cat_str, scat2, scat3, fmt_join, split_str_keep, split_str_set, trim_str, int_str, chr_int, chr_str, chr_str_set, vector, vecref, vecref_l, list_vec, copy_vec, sub_vec, cat_vec, lazy_str_put, lazy_str_gt, length_str_ge, length_str_lt, length_str_le, cptr_size_hint, cptr_int, out_lazy_str, out_quasi_str, time_string_local_time, time_string_utc, time_fields_local_time, time_fields_utc, time_struct_local, time_struct_utc, make_time, time_meth, time_parse_meth): DS. (init_str, cat_str_init, cat_str_measure, cat_str_append, vscat, time_fields_to_tm, time_struct_to_tm, make_time_impl): TS. * lib.h (seq_iter_rewind): Declaration removed. (c_num, c_unum, init_str): Declarations updated. * match.c (LOG_MISMATCH, LOG_MATCH): PS. (h_skip, h_coll, do_output_line, do_output, v_skip, v_fuzz, v_collect): DS. * parser.c (parser, circ_backpatch, report_security_problem, hist_save, repl, lino_fileno, lino_getch, lineno_getl, lineno_gets, lineno_open): DS. (parser_set_lineno, lisp_parse_impl): PS. * parser.l (YY_INPUT): PS. * rand.c (make_random_state): PS. * regex.c (print_rec): DS. (search_regex): PS. * signal.c (kill_wrap, raise_wrap, get_sig_handler, getitimer_wrap, setitimer_wrap): DS. * socket.c (addrinfo_in, sockaddr_pack, fd_timeout, to_connect, open_sockfd, sock_mark_connected, sock_timeout): TS. (getaddrinfo_wrap, dgram_set_sock_peer, sock_bind, sock_connect, sock_listen, sock_accept, sock_shutdown, sock_send_timeout, sock_recv_timeout, socketpair_wrap): DS. * stream.c (generic_fill_buf, errno_to_string, stdio_truncate, string_out_put_string, open_fileno, open_command, base_name, dir-name): DS. (unget_byte, put_buf, fill_buf, fill_buf_adjust, get_line_as_buf, formatv, put_byte, test_set_indent_mode, test_neq_set_indent_mode, set_indent_mode, set_indent, inc_indent, set_max_length, set_max_depth, open_subprocess, run ): PS. (fds_subst, fds_swizzle): TS. * struct.c (make_struct_type, super, umethod_args_fun): PS. (method_args_fun): DS. * strudel.c (strudel_put_buf, strudel_fill_buf): DS. * sysif.c (errno_wrap, exit_wrap, usleep_wrap, mkdir_wrap, ensure_dir, makedev_wrap, minor_wrap, major_wrap, mknod_wrap, mkfifo_wrap, wait_wrap, wifexited, wexitstatus, wifsignaled, wtermsig, wcoredump, wifstopped, wstopsig, wifcontinued, dup_wrap, close_wrap, exit_star_wrap, umask_wrap, setuid_wrap, seteuid_wrap, setgid_wrap, setegid_wrap, simulate_setuid_setgid, getpwuid_wrap, fnmatch_wrap, dlopen_wrap): DS. (chmod_wrap, do_chown, flock_pack, do_utimes, poll_wrap, setgroups_wrap, setresuid_wrap, setresgid_wrap, getgrgid_wrap): PS. (c_time): TS. * sysif.h (c_time): Declaration updated. * syslog.c (openlog_wrap, syslog_wrap): DS. * termios.c (termios_pack): TS. (tcgetattr_wrap, tcsetattr_wrap, tcsendbreak_wrap, tcdrain_wrap, tcflush_wrap, tcflow_rap, encode_speeds, decode_speeds): DS. * txr.c (compato, array_dim, gc_delta): DS. * unwind.c (uw_find_frames_by_mask): DS. * vm.c (vm_make_desc): PS. (vm_make_closure, vm_swtch): DS.
* itypes: remove silly itypes_little_endian.Kaz Kylheku2020-06-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Curiously, the itypes_little_endian variable was introduced in April 2017, in a the first commit implementing buffers. The variable was initialized, but never referenced. About a month after that, I introduced HAVE_LITTLE_ENDIAN config.h macro, which is always present and defined as 0 or 1. This was used right away in the implementation of FFI bitfields, and later on in other FFI work. In spite of HAVE_LITTLE_ENDIAN, almost exactly a year after itypes_little_endian was introduced, I mistakenly put that variable to use instead of recognizing it as superfluous and removing it in favor of using HAVE_LITTLE_ENDIAN. That is what I'm doing now. * itypes.c (itypes_little_endian): Variable removed. (itypes_init): Function removed, since its only job is to initialize this variable. * itypesl.h (itypes_little_endian, itypes_init): Declarations removed. * lib.c (init): Call to itypes_init removed. * parser.c (read_file_common): Instead of itypes_little_indian, use HAVE_LITTLE_ENDIAN, which the configuration script always exists and is defined as 0 or 1.
* listener: perms complaint for missing .txr_historyKaz Kylheku2020-06-191-2/+4
| | | | | | | | | * parser.c (repl): The listener wrongly complains that .txr_history has bad permissions when it doesn't exist. New users of TXR won't have a history file, so this looks sloppy. Since we load the history file regardless of the check, let's do the check in the case when the file has successfully loaded.
* Replace trivial format(nil, ...) with simpler ops.Kaz Kylheku2020-05-301-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * gencadr.txr (cadr_register): Use scat2 to glue two strings. * cadr.c: Regenerated. * lib.c (scat2, scat3): New functions. * lib.h (scat2, scat3): Declared. * liblib.c (place_instantiate, ver_instantiate, ifa_instantiate, txr_case_instantiate, with_resources_instantiate, path_test_instantiate, struct_instantiate, with_stream_instantiate, hash_instantiate, except_instantiate, type_instantiate, yield_instantiate, sock_instantiate, termios_instantiate, awk_instantiate, build_instantiate, trace_instantiate, getopts_instantiate, package_instantiate, getput_instantiate, tagbody_instantiate, pmac_instantiate, error_instantiate, keyparams_instantiate, ffi_instantiate, doloop_instantiate, stream_wrap_instantiate, asm_instantiate, compiler_instantiate, debugger_instantiate, op_instantiate, save_exe_instantiate, defset_instantiate, copy_file_instantiate): Use scat2 to glue two strings instead of format. * parser.c (find_matching_syms, hist_save, repl): Replace trivial uses of format with scat2 or scat3. * sysif.c (ensure_dir): Likewise. * txr.c (get_self_path, substitute_basename, sysroot, sysroot_init, parse_once_noerr, read_compiled_file_noerr, read_eval_stream_noerr): Likewise. * unwind.c (uw_unwind_to_exit_point): Likewise.
* Remove unnecessary #include directives.Kaz Kylheku2020-04-221-1/+0
| | | | | | | | | | Time for some spring cleaning. * args.c, arith.c, buf.c, cadr.c, chksum.c, debug.c, ftw.c, gc.c, gencadr.txr, glob.c, hash.c, lisplib.c, match.c, parser.c, parser.l, parser.y, rand.c, signal.c, stream.c, strudel.c, syslog.c, tree.c, unwind.c, utf8.c, vm.c: Numerous unnecessary #include directives removed.
* listener: completion for Unicode identifiers.Kaz Kylheku2020-04-171-2/+4
| | | | | | * parser.c (provide_completions): Recognize U+0080 and higer characters as token constituents, allowing completion to work for symbols which use these characters.
* txr-parse: release deferred warnings.Kaz Kylheku2020-04-141-2/+11
| | | | | | | * parser.c (txr_parse): The function must ensure that deferred warnings are released, if it is not wrapped in a larger translation unit. If *load-recursive* is false, we release the warnings after the parser.
* repl: improve dotfile security tests.Kaz Kylheku2020-04-091-5/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We test the .txr_history file for bad permissions also, not only .txr_profile. Though commands are not automatically executed out of .txr_history, a user could execute a harmful command due to not noticing the malicious modification. An additional useful diagnostic is added: if a dotfile is found to have the wrong permission, it's possible that this is due to a poor umask setting. We check for a weak umask and warn the user. Note: the .txr_history check doesn't use the open stream, therefore it is vulnerable to TOCTTOU race condition: the file looks good, but between the time we verify this and open the file to load it, the file has been replaced by a malicious one. * parser.c (report_security_problem): New static function, factored out of load_rcfile. Includes umask test. (load_rcfile): Call report_security_problem if the .txr_profile is writable to others. Also, no need to call stat any more; the path testing function now takes a stream argument. (repl): Check .txr_history for inappropriate writepermissions also and call report_security_problem if so. * sysif.c (umask_wrap): Change static function to external linkage. * sysif.c (umask_wrap): Declaration updated.
* exceptions: use uw_rthrow for non-error exceptions.Kaz Kylheku2020-04-071-2/+2
| | | | | | | | | | | | | | | | | | | * eval.c (eval_exception): This function is shared by warnings and errors. Use uw_throw. The eval_error caller already has an abort() after its eval_exception call, which makes that code path continue to be equivalent to uw_throw. The behavior changes for the other caller, eval_warn, which will now return if the warning is not handled. (eval_defr_warn, gather_free_refs, gather_free_refs_nw): Throw non-error exception with uw_rthrow. * match.c (v_throw, v_assert, h_assert): Use uw_rthrow for these directives, just like the throw function. * parser.c (repl_intr, repl_warning): Use uw_rthrow. * unwind.c (uw_muffle_warning, uw_release_deferred_warnings): Likewise.
* warning cleanup: GNU C++ initializer warnings.Kaz Kylheku2020-04-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | This is the eight and final round of an effort to enable GCC's -Wextra option. The C++ compiler, with -Wextra, doesn't like C's universal struct initializer { 0 }, individually complaining about all the remaining members not being initialized. What works in C++ is the { } initializer. Conditional definition to the rescue. * lib.h (all_zero_init): New macro which expands to { } under C++, and { 0 } under C. * lib.c (make_time_impl, epoch_tm, time_string_meth, time_parse_meth): Use all_zero_init. * parser.c (prime_parser): Likewise. * socket.c (sock_mark_connected): Likewise. * sysif.c (fcntl_wrap): Likewise. * termios.c (encode_speeds, decode_speeds): Likewise. * configure (diag_flags): Add -Wextra.
* warning cleanup: missing member initializers.Kaz Kylheku2020-04-051-7/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the sixth round of an effort to enable GCC's -Wextra option. Warnings about uninitialized members are addressed. I am not happy with what had to be done in linenoise.c. We just need a dummy circular list node for the lino_list, which we achieved with a dummy all zero struture, with statially initialized next and prev pointers. There are way too many members to initialize, including one that has struct termios type containing a nonportable set of members. On the plus size, the lino_list structure now moves into the BSS section, reducing the executable size slightly. * lib.c (cptr_ops): Initialize using cobj_ops_init, which has all the initializers already, and should have been used for this in the first place. * linenoise/linenoise.c (lino_list): Remove initializer, which eliminates the warning about some members not being initialized. (lino_init): Initialize the next and prev pointers here. * parser.c (parser_ops): Initialize with cobj_ops_init. * stream.h (stdio_mode_init_blank, stdio_mode_init_r, stdio_mode_init_rpb): Add initializer corresponding to redir array member of struct stdio_mode. * sysif.c (cptr_dl_ops): Use cobj_ops_init. * tree.c (tree_iter_init): Add initializer for the path array member of struct tree_iter. (tr_rebuild): Initialize all fields of the dummy object. Since it's a union, we just have to deal with the any member. There are two layouts for the obj_common fields based on whether CONFIG_GEN_GC is enabled. This is ugly, but occurs in one place only.
* warning cleanup: signed/unsigned in ternaries.Kaz Kylheku2020-04-051-1/+1
| | | | | | | | | | | | | | | | | | | | | This is the third round of an effort to enable GCC's -Wextra option. Instances of signed/unsigned mismatch between the branches of ternary conditionals are addressed. * ffi.c (pad_retval): Add cast into the consequent of the conditional so it yields size_t, like the alternative. * lib.c (split_str_keep): Likewise. (vector): Cast -1 to ucnum so it has the same type as the alloc_plus opposite to it. * parser.c (lino_getch): Add a cast to wint_t to match return value and opposite WEOF operand. * stream.c (generic_get_line): Likewise. * sysif.c (c_time): Convert both consequent and alternative to time_t to silence warning.
* warning cleanup: add casts for unused parameters.Kaz Kylheku2020-04-051-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the first round of an effort to enable GCC's -Wextra option. All function parameters that are unused an that we cannot eliminate are treated with a cast to void in the function body. * args.c (args_key_check_store): Cast unused param to void. * combi.c (perm_list_gen_fill): Likewise. * eval.c (op_error, op_meta_error, op_quote op_qquote_error, op_unquote_error, op_load_time_lit, me_each, me_for, me_quasilist, me_flet_labels, hash_min_max, me_ignerr, me_whilet, me_iflet_whenlet, me_dotimes, me_mlet, me_load_time, me_load_for): Likewise. * ffi.c (ffi_void_put, ffi_fixed_dynsize, *ffi_fixed_alloc, ffi_noop_free, ffi_void_get, ffi_simple_release, ffi_i8_put, ffi_i8_get, ffi_u8_put, ffi_u8_get, ffi_i16_put, ffi_i16_get, ffi_u16_put, ffi_u16_get, ffi_i32_put, ffi_i32_get, ffi_u32_put, ffi_u32_get, ffi_i64_put, ffi_i64_get, ffi_u64_put, ffi_u64_get, ffi_char_put, ffi_char_get, ffi_uchar_put, ffi_uchar_get, ffi_bchar_get, ffi_short_put, ffi_short_get, ffi_ushort_put, ffi_ushort_get, ffi_int_put, ffi_int_get, ffi_uint_put, ffi_uint_get, ffi_long_put, ffi_long_get, ffi_ulong_put, ffi_ulong_get, ffi_float_put, ffi_float_get, ffi_double_put, ffi_double_get, ffi_val_put, ffi_val_get, ffi_be_i16_put, ffi_be_i16_get, ffi_be_u16_put, ffi_be_u16_get, ffi_le_i16_put, ffi_le_i16_get, ffi_le_u16_put, ffi_le_u16_get, ffi_be_i32_put, ffi_be_i32_get, ffi_be_u32_put, ffi_be_u32_get, ffi_le_i32_put, ffi_le_i32_get, ffi_le_u32_put, ffi_le_u32_get, ffi_be_i64_put, ffi_be_i64_get, ffi_be_u64_put, ffi_be_u64_get, ffi_le_i64_put, ffi_le_i64_get, ffi_le_u64_put, ffi_le_u64_get, ffi_wchar_put, ffi_wchar_get, ffi_sbit_get, ffi_ubit_get, ffi_cptr_get, ffi_str_in, ffi_str_put, ffi_str_get, ffi_str_d_get, ffi_wstr_in, ffi_wstr_get, ffi_wstr_put, ffi_wstr_d_get, ffi_bstr_in, ffi_bstr_put, ffi_bstr_get, ffi_bstr_d_get, ffi_buf_in, ffi_buf_put, ffi_buf_get, ffi_buf_d_in, ffi_buf_d_put, ffi_buf_d_get, ffi_closure_put, ffi_ptr_in_in, ffi_ptr_in_d_in, ffi_ptr_in_out, ffi_ptr_out_in, ffi_ptr_out_out, ffi_ptr_out_null_put, ffi_ptr_out_s_in, ffi_flex_struct_in, ffi_carray_get, ffi_union_get, make_ffi_type_builtin, make_ffi_type_array, ffi_closure_dispatch, ffi_closure_dispatch_safe): Likewise. * gc.c (cobj_destroy_stub_op, cobj_destroy_free_op, cobj_mark_op): Likewise. * lib.c (seq_iter_get_nil, seq_iter_peek_nil): Likewise. * linenoise/linenoise.c (sigwinch_handler): Likewise. * parser.c (repl_intr, read_eval_ret_last, repl_warning, is_balanced_line): Likewise. * parser.y (yydebug_onoff): Likewise. * socket.c (dgram_close): Likewise. * stream.c (unimpl_put_string, unimpl_put_char, unimpl_put_byte, unimpl_unget_char, unimpl_unget_byte, unimpl_put_buf, unimpl_fill_buf, unimpl_seek, unimpl_truncate, unimpl_set_sock_peer, null_put_string, null_put_char, null_put_byte, null_get_line, null_get_char, null_get_byte, null_close, null_flush, null_seek, null_set_prop, null_get_error, null_get_error_str, null_clear_error, null_get_fd, dir_close): Likewise. * struct.c (struct_type_print): Likewise. * unwind.c (me_defex): Likewise.
* New function: txr-parse.Kaz Kylheku2020-04-021-0/+41
| | | | | | | | | | | | txr-parse provides a way for Lisp code to programmatically parse the TXR language and obtain the Lisp represenation. This has hitherto not been available. * eval.c (eval_init): Register txr-parse intrinsic. * parser.c (txr_parse): New function. * parser.h (txr_parse): Declared.
* listener: if no new lines, don't save history.Kaz Kylheku2020-02-181-1/+1
| | | | | | | | | * linenoise/linenoise.c (lino_have_new_lines): New function. * linenoise/linenoise.h (lino_have_new_lines): Declared. * parser.c (hist_save): Do nothing if lino_have_new_lines returns false.
* listener: save history early with :save command.Kaz Kylheku2020-02-181-15/+26
| | | | | | | | | * parser.c (hist_save): New static function. (repl): Logic for savingn history when terminating has moved into hist_save. New save command also calls this function. * txr.1: Documented.
* listener: append to .txr_history instead of clobbering.Kaz Kyheku2020-02-181-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses the problem of history loss that occurs when a user juggles multiple TXR sessions that all clobber the same history file. * linenoise/linenoise.c (struct lino_state): New member, loaded_lines, keeping track of how many of the lines in the history came from loading the history file. Lines between [0] and [loaded_lines - 1] are loaded lines. New lines occur between [loaded_lines] and [history_len - 1]. (lino_hist_add): Reset loaded_lines to zero when creating history for the first time. Not really necessary since the structure starts zero-filled. When a line of history is erased, then it must be a loaded line, unless loaded_lines is zero. Thus, then decrement loaded_lines to account for a loss of a loaded line, but don't decrement below zero. (lino_hist_set_max_len): Setting the max length can cause history to be trimmed, so we must adjust loaded_lines to account for any loaded lines that get discarded. (lino_hist_save): Takes a new parameter which indicates whether to just save the new history by appending it to the given file, or to overwrite the file with the entire history. In either case, once we save the history, we assume that all of our lines are loaded lines and set loaded_lines to hist_len. In the future, this last step will help implement incremental saving mid-way through a sesssion. (lino_hist_load): Error out if there is already a history. With this loaded_lines logic, it really wouldn't make sense to read history more than once. After loading, set loaded_lines to hist_len. * linenoise/linenoise.h (enum lino_file_mode): New enumeration lino_append. (lino_hist_save): Declaration updated. * parser.c (repl): Implement new history saving protocol. The history file is read using a temporary instance of linenoise, which has the effect of trimming it to the required number of lines. This is written to a temporary file, to which the newly entered lines are appended, and which is finally renamed to replace the history file. (lino_mode_str): Add "a" entry corresponding to lino_append. (lino_open): Do the fchmod in the lino_append case also. * txr.1: Documented the new handling of the history file.
* repl: catch exceptions during completion.Kaz Kylheku2020-02-041-2/+14
| | | | | | | | | | | This fixes the issue that TXR exits if an exception occurs during Tab completion in the interactive listener. This could happen when loading a file fails for whatever reason, such as a corrupt or incomplete installation of the library files or whatever. * parser.c (provide_completions): Set up a catch all handler here around everything, like we already did in provide_atom.
* fstat: turn into true alias.Kaz Kylheku2020-02-041-1/+1
| | | | | | | | | | | | | | | | | | We can get rid of fstat_wrap entirely and make the lstat and fstat function bindings point to the same function. * parser.c (load_rcfile): Call stat_wrap instead of fstat_wrap. * sysif.c (stat_wrap): Static function becomes extern. Useless forward declaration removed. (fstat_wrap): Static function removed. (sysif_init): Bind fstat and lstat to the same function object. * sysif.h (fstat_wrap): Declaration removed. (stat_wrap): Declaration added.
* sysif: fix inappropriate use of w_ convention.Kaz Kylheku2020-01-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Some functions in utf8.c have w_ prefixes. They are wide character wrappers for functions that take multi-byte string inputs. The prefix is being inappropriately used in the names of a few sysif functions that should be named _wrap. * sysif.c (w_stat, w_lstat, w_fstat): Rename to do_stat, do_lstat and do_fstat, respectively. These are callbacks used with stat_impl. (statp, statl, statf): Rename to stat_wrap, lstat_wrap and fstat_wrap, following existing convention. Additionally, stat_wrap becomes static since nothing outside this file calls it. (sysif_init): Follow renames of statp, statl and statf. * sysif.h (statp): Declaration removed. (statf): Renamed to fstat_wrap. * parser.c (load_rcfile): Follow statf rename.
* Copyright year bump 2020.Kaz Kylheku2019-12-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * LICENSE, LICENSE-CYG, METALICENSE, Makefile, alloca.h, args.c, args.h, arith.c, arith.h, buf.c, buf.h, cadr.c, cadr.h, chksum.c, chksum.h, chksums/crc32.c, chksums/crc32.h, combi.c, combi.h, configure, debug.c, debug.h, eval.c, eval.h, ffi.c, ffi.h, filter.c, filter.h, ftw.c, ftw.h, gc.c, gc.h, glob.c, glob.h, hash.c, hash.h, itypes.c, itypes.h, jmp.S, lib.c, lib.h, linenoise/linenoise.c, linenoise/linenoise.h, lisplib.c, lisplib.h, match.c, match.h, parser.c, parser.h, parser.l, parser.y, protsym.c, rand.c, rand.h, regex.c, regex.h, share/txr/stdlib/asm.tl, share/txr/stdlib/awk.tl, share/txr/stdlib/build.tl, share/txr/stdlib/cadr.tl, share/txr/stdlib/compiler.tl, share/txr/stdlib/conv.tl, share/txr/stdlib/debugger.tl, share/txr/stdlib/defset.tl, share/txr/stdlib/doloop.tl, share/txr/stdlib/error.tl, share/txr/stdlib/except.tl, share/txr/stdlib/ffi.tl, share/txr/stdlib/getopts.tl, share/txr/stdlib/getput.tl, share/txr/stdlib/hash.tl, share/txr/stdlib/ifa.tl, share/txr/stdlib/keyparams.tl, share/txr/stdlib/op.tl, share/txr/stdlib/package.tl, share/txr/stdlib/param.tl, share/txr/stdlib/path-test.tl, share/txr/stdlib/place.tl, share/txr/stdlib/pmac.tl, share/txr/stdlib/save-exe.tl, share/txr/stdlib/socket.tl, share/txr/stdlib/stream-wrap.tl, share/txr/stdlib/struct.tl, share/txr/stdlib/tagbody.tl, share/txr/stdlib/termios.tl, share/txr/stdlib/trace.tl, share/txr/stdlib/txr-case.tl, share/txr/stdlib/type.tl, share/txr/stdlib/vm-param.tl, share/txr/stdlib/with-resources.tl, share/txr/stdlib/with-stream.tl, share/txr/stdlib/yield.tl, signal.c, signal.h, socket.c, socket.h, stream.c, stream.h, struct.c, struct.h, strudel.c, strudel.h, sysif.c, sysif.h, syslog.c, syslog.h, termios.c, termios.h, tree.c, tree.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h, vm.c, vm.h, vmop.h, win/cleansvg.txr: Extended copyright notices to 2020.
* listener: C++ enum issue.Kaz Kylheku2019-12-131-1/+1
| | | | | | * parser.c (is_balanced_line): don't initialize an "enum state" variable with 0, but with the equivalent enum constant.
* load: bug: source loc gathered for .tlo files.Kaz Kylheku2019-11-291-1/+3
| | | | | | | | | | | | Contrary to the belief expressed in the commit message of June 2018's 46480c25e62f60c761088c561d90b0f2f5a3143f, source location info is being recorded during the loading of compiled files. The reason is that the function used for processing the forms, lisp_parse_impl, overrides it. * parser.c (read_file_common): Use lisp_parse_impl directly, rather than lisp_parse. Specify that function's rlcp_p argument as false when processing compiled code.
* listener: fix buggy balanced line check.Kaz Kylheku2019-11-241-2/+7
| | | | | | | | | | * parser.c (is_balanced_line): When handling the closing characters, we must look for the state type which matches the character type, not state[sp]. Of course state[sp] == match, since we initialized it that way, and so state[sp] != match is always false. We want match to be derived from the character ch, not from state[sp]. Also, the polarity in the match-not-found return case is wrong; we must return 0.
* lib: use stack-allocated hash iterators everywhere.Kaz Kylheku2019-11-011-4/+9
| | | | | | | | | | | | | | | | | * eval.c (op_dohash): Use hash_iter instead of consing up heap-allocated hash iterator. * filter.c (trie_compress, regex_from_trie): Likewise. * hash.c (hash_equal_op, hash_hash_op, hash_print_op): Likewise. * lib.c (package_local_symbols, package_foreign_symbols, find_max, find_if, rfind_if, populate_obj_hash): Likewise. * parser.c (circ_backpatch, get_visible_syms): Likewise. * struct.c (method_name, get_slot_syms): Likewise.
* circle notation: use faster access in backpatch.Kaz Kylheku2019-10-251-7/+5
| | | | | | * parser.c (circ_backpatch): Since we know that we have a CONS or VEC object, use direct access instead of going through type-safe accessors.
* circle notation: recycle conses in backpatching.Kaz Kylheku2019-10-241-2/+8
| | | | | | * parser.c (circ_backpatch): Recycle the conses belonging to the temporary linked list allocated during hash table and tree backpatching.
* circle notation: some backpatching optimizations.Kaz Kylheku2019-10-211-6/+13
| | | | | | | * parser.c (circ_backpatch): For hashes and trees, if the count has not changed while traversing the elements, then it means nothing was backpatched: there is no need to do the extra expensive step of rebuilding the hash or tree.
* parser: use eq-based hash for circular notation.Kaz Kylheku2019-10-111-1/+1
| | | | | * parser.c (parser_circ_def): Instantiate p->circ_ref_hash as eq-based hash, not eql-based.
* tree: circular notation support.Kaz Kylheku2019-10-071-0/+25
| | | | | | * lib.c (populate_obj_hash): Handle tree object. * parser.c (circ_backpatch): Likewise.
* circle notation: bugfix for hash_userdata.Kaz Kylheku2019-10-071-0/+3
| | | | | | * parser.c (circ_backpatch): Fix neglect to recurse into hash table's userdata object to look for circle notation references.
* New data type: tnode.Kaz Kylheku2019-09-221-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Binary search tree nodes are being added as a basic heap data type. The C type tag is TNOD, and the Lisp type is tnode. Binary search tree nodes have three elements: a key, a left child and a right child. The printed notation is #N(key left right). Quasiquoting is supported: ^#N(,foo ,bar) but not splicing. Because tnodes have three elements, they they fit into TXR's four-word heap cell, not requiring any additional memory allocation. These nodes are going to be the basis for a binary search tree container, which will use the scapegoat tree algorithm for maintaining balance. * tree.c, tree.h: New files. * Makefile (OBJS): Adding tree.o. * eval.c (expand_qquote_rec): Recurse through tnode cells, so unquotes work inside #N syntax. * gc.c (finalize): Add TNOD to no-op case in switch; tnodes don't require finalization. (mark_obj): Traverse tnode cell. * hash.c (equal_hash): Add TNOD case. * lib.c (tnode_s): New symbol variable. (seq_kind_tab): New entry for TNOD, mapping to SEQ_NOTSEQ. (code2type, equal): Handle TNOD. (obj_init): Initialize tnode_s variable. (obj_print_impl, populate_obj_hash): Handle TNOD. (init): Call tree_init function in tree.c. * lib.h (enum type, type_t): New enumeration TNOD. (struct tnod): New struct type. (union obj, obj_t): New union member tn of type struct tnod. (tnode_s): Declard. * parserc.c (circ_backpatch): Handle TNOD, so circular notation works through tnode cells. * parser.l (grammar): Recognize #N prefix, mapping to HASH_N token. * parser.y (HASH_N): New grammar terminal symbol. (tnode): New nonterminal symbol. (i_expr, n_expr): Add tnode cases to productions. (yybadtoken): Map HASH_N to "#N" string.
* parser: bugfix: uninitialized ignore flag.Kaz Kylheku2019-08-201-0/+1
| | | | | | | | | | | | | | | * parser.c (parser_common_init): Initialize the ignore flag, which was until recently called circ_suppress. When the parser is invoked via parse_once or parse_once_noerror, rather than parse, the state of the flag is indeterminate. Thus this only affects the TXR Pattern Language, not TXR Lisp. As a result of this bug, which affects releases 157 through 223, if the circle notation like #1=(foo #1#) is used in Pattern Language syntax, it may not be handled properly. I discovered this bug now because there are new behaviors connected to the flag; it doesn't just affect the processing of the circle notation, but is involved in all symbol handling in the parser.
* parser: rename circ_suppress flag.Kaz Kylheku2019-08-181-1/+1
| | | | | | | | | | | * parser.h (struct parser): eof flag changed to unsigned char. circ_suppress flag renamed to ignore, changed to unsigned char and relocated next to eof to compact together. * parser.c (parser_circ_ref): Follow rename. * parser.y (hash_semi_or_n_expr, hash_semi_or_i_expr, n_exprs, parse): Likewise.
* listener: don't flush lines when writing files.Kaz Kylheku2019-08-121-1/+11
| | | | | | | | | | | | | | | | * linenoise/linenoise.h (struct lino_os): New virtual operation, puts_file_fn: like puts_fn, but not display-oriented: doesn't check for and ignore padding characters, and doesn't flush after each line. (lino_os_init): Initializer macro updated. * linenoise/linenoise.c (edit_it_editor): Use puts_file_fn to write to temporary file. (lino_hist_save): Likewise, when writing out history. * parser.c (lino_puts_file): New static function. (linenoise_txr_binding): Add lino_puts_file to initializer to wire in the operation.
* txr: regression: lack of file name in error messages.Kaz Kylheku2019-07-221-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was broken on April 21, 2019 in commit 2e36e0feae8d1dd75c8410b365d7dc33b30ce66b (April 21, 2019) which changed parse_once in such a way that the name being passed down was no longer stored in the parser. The ensure_parser function being relied upon doesn't take on the responsibility of propagating the name from the stream to the parser, so the parser ends up with a nil name. Let's just smooth this over by having ensure_parser take a name parameter. If ensure_parser creates a new parser, it puts in the name. If the name is nil, then it is taken from the stream. * eval.c (load): Pass name to ensure_parser. * match.c (v_load): Likewise. * parser.c (parser): Take name parameter, and plant into newly constructed parser. (ensure_parser): Take name parameter. When creating a parser, give it that name, or if name is specified as nil, then give it the name taken from the stream. (parser_set_lineno): Pass nil name to ensure_parser. (lisp_parse_impl, read_file_common): Pass name to ensure_parser. * parser.h (parser, ensure_parser): Declarations updated. * parser.y (parse_once): Pass name to ensure_parser. * txr.c (txr_main): Pass spec_file_str to ensure_parser.
* regression: unsuffixed cmdline arg treated as Lisp.Kaz Kylheku2019-06-101-8/+14
| | | | | | | | | | | | | | | | | | This broke in TXR 216. TXR files with no suffix run using #!/path/to/txr stopped working due to being interpreted as Lisp. The rearrangement done in open_txr_file function didn't respect the hacky treatment of the *txr_lisp_p flag, which depended on the original order. The flag ends up being set to t, because we tried (unsuccessfully) opening a .tl suffix, and that then falsely indicates "Lisp" when the unsuffixed file is open. That logic worked when we tried the unsuffixed file first, and fell back on the added suffixes last. * parser.c (open-txr_file): Instead of repeatedly testing for in == 0, we execute a forward goto when we successfully open a file. Only in those successful cases, set *txr_lisp_p to the appropriate value, not touching it otherwise.
* loading: try unsuffixed files directly last.Kaz Kylheku2019-05-011-34/+41
| | | | | | | | | | | | | | | | | | | | | | | | | In this patch we change the strategy for resolving unsuffixed paths in load and @(load). In load, an unsuffixed name is tried with a .tlo suffix, then .tl and only if those don't resolve to a file it is tried as-is. The previous order is as-is, .tlo, .tl. Similarly in @(load), but unsuffixed paths are tried as .txr, then .tlo, then .tl. The motivation for this is to avoid probing the filesystem multiple times the optimized case that we care about: loading .tlo files from Lisp. * parser.c (open_txr_file): Rearrange the probing strategy. Also recognize .txr_profile as a suffix, treating it like .tl. This is so that we don't probe for .txr_profile.tlo and .txr_profile.tl before finding the profile. (load_rcfile): Take advantage of the new path-not-found exception. We avoid wastefully checking with path-exists-p to avoid calling open_txr_file. We just let open_txr_file throw an exception if the file doesn't exist, and then distinguish the non-existence case in the handler. * txr.1: Updated @(load) and load documentation.
* lib: more nuanced file access errors.Kaz Kylheku2019-05-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several new more specific exception types are derived from file-error and used. Error handlers can distinguish unexpected non-existence, unexpected existence and permission errors from each other and other errors. * lib.c (path_not_found_s, path_exists_s, path_permission_s): New symbol variables. (obj_init): New variables initialized. * lib.h (path_not_found_s, path_exists_s, path_permission_s): Declared. * parser.c (open_txr_file): Use new errno_to_file_error function to convert errno to exception symbol. * socket.c (open_sockfd): Likewise. * stream.c (open_directory, open_file, open_fileno, open_command, open_process, run, remove_path, rename_path): Likewise, and process-error is used in open_process and run instead of file-error for problems related to creating the process. * sysif.c (errno_to_file_error): New function. (mkdir_wrap, ensure_dir, chdir_wrap, getcwd_wrap, mknod_wrap, chmod_wrap, symlink_wrap, link_wrap, readlink_wrap, stat_impl, umask_wrap, ): Use errno_to_file_error to convert errno to exception symbol. (exec_wrap): Use process-error instead of file-error. * sysif.c (errno_to_file_error): Declared. * unwind.c (uw_init): Register path-not-found, path-exists and path-permission as subtypes of file-error. * txr.1: Documented.
* bugfix: source lineno off by one under hash bang.Kaz Kylheku2019-04-211-0/+8
| | | | | | | | | | | | | | * eval.c (load): When we read and discard a hash bang line, we must set the parser line number to two. * parser.c (parser_set_lineno): New function. * parser.h (parser_set_lineno): Declared. * txr.c (check_hash_bang): New argument, occurs. (txr_main): Track whether hash bang has occurred in a new local variable hb_occurs. Then, before parsing, if hash bang has occurred, set the line number to two.
* parser: always use stream-associated parser for parse_once.Kaz Kylheku2019-04-211-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This refactoring is needed for fixing the off-by-one line number bug when the hash bang line is processed. * eval.c (load): Don't define parser locally; ensure there is one in the stream and use it. * match.c (v_load): Likewise. * parser.c (get_parser_impl): Renamed to parser_get_impl and changed from internal to external linkage. (ensure_parser): Changed to external linkage. (lisp_parser_impl, read_file_common): Follow rename of get_parser_impl. * parser.h (parse_once): Declaration updated. (parser_get_impl, ensure_parser): Declared. * parser.y (parse_once): Take self parameter; drop parser parameter. Ensure a parser to the stream, rather than declaring one locally. Don't clean up the parser when done, just let the stream clean it up. * txr.c (parse_once_noerr): Parser argument is dropped and not passed to parse_once. Program name is passed as self argument to parse_once. (txr_main): When parsing the TXR pattern query, don't define a parser locally; ensure there is one in the stream and use it, like in load and v_load.
* exceptions: allow description field in catch frames.Kaz Kylheku2019-04-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (op_catch): Extra argument in sys:catch syntax specifies an expression that evaluates to a description field. (expand_catch): Expand the desc expression in sys:catch syntax. * parser.c (read_file_common): Increase acceptance of compiled files from versions 1-4 to 1-5, since we are now marking compiled files with version 5.0 rather than 4.0. * share/txr/stdlib/asm.tl (op-catch catch): Support new argument in the opcode syntax. Turns out we have a spare field in the instruction format which was previously set to zero We can use that for the description. Thus, the instruction set and VM remain backward compatible: old code works. * share/txr/stdlib/compiler.tl (compiler comp-catch): Handle the desc argument introduced into the sys:catch form. We must compile it as an expression, then inject the code into the instruction template, and reference the output register of that code block in the catch instruction. (%tlo-ver%): Bump up the compiled file version to 5.0. * share/txr/stdlib/except.tl (usr:catch, catch*): Add desc argument to generated sys:catch form, specifying it as nil. * unwind.c (desc_s): New symbol variable. (uw_find_frames_impl): Set the desc member of the extracted catch structure from the corresponding field in the catch frame. (uw_late_init): Initialize desc_s with interned symbol. Add desc slot to catch-frame type. * unwind.h (struct uw_catch): New member, desc. (uw_catch_begin_w_desc): New macro. * vm.c (vm_catch): Extract the desc field from the catch instruction, and use uw_catch_begin_w_desc to propagate that to the catch frame.
* repl: groundwork for recursive listener invocation.Kaz Kylheku2019-04-081-7/+17
| | | | | | | | | | | | | | | | | * parser.c (lino_ctx, repl_level): New static variable. (repl): Increment repl_level on entry and decrement on exit. On the initial entry, allocate the lino_t object, storing it in the new static variable. Free it on outermost exit. The number of > characters in the prompt indicates the nesting level. The function now takes an environment parameter, which is applied to the evaluation of the input form. The intent is to be able to supply symbol macros which expand to function calls implementing debugger commands. (parser_init): Register sys:repl intrinsic. * parser.h (repl): Declaration updated. * txr.c (txr_main): Pass nil environment parameter to repl
* listener: ensure history and temp files are rw-------.Kaz Kylheku2019-03-261-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | For security, the temporary files used by the "edit in external editor" feature of the listener, as well as the listener history file, should be readable and writable only to the owner. This relates to Debian bug 832460 against the Linenoise library: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832460 In the TXR fork of the linenoise library, since we have an OS abstraction invoked by callback functions, we fix this entirely outside of linenoise. I don't agree with the upstream approach of fiddling with the umask and doing a chmod on the path. Since we are truncating and overwriting the file, all we have to do is, before writing any data, fchmod it to the required permissions. * parser.c (lino_open): If the file is being open for overwriting, then let's set its permissions so that it's readable and writable for the user only.
* listener: return value regression.Kaz Kylheku2019-03-011-2/+2
| | | | | * parser.c (lino_getl, lino_gets): Return null pointer on EOF, restoring original behavior that was broken by recent patches.
* listener: fix buffer overflow loading overlong history line.Kaz Kylheku2019-03-011-6/+1
| | | | | * parser.c (lino_getl): Same fixes that were applied two weeks ago to lino_gets in commit b76c5760. Always check for copy and paste!
* parser: gc bug in handling circular notation.Kaz Kylheku2019-02-241-1/+3
| | | | | | | * parser.c (parser_circ_def): When we lazily add the circ_ref_hash to the parser, this is possibly a wrong-way assignment (pointer to a baby object being stored into a mature object). The handling for this is missing.
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