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Name	Size	Permission	Date
.libs	[ DIR ]	drwxr-xr-x	2024-03-12 14:35
tests	[ DIR ]	drwxrwxr-x	2022-10-31 11:36
LICENSE	2.74 KB	-rw-rw-r--	2022-10-31 11:36
Makefile.frag	1.96 KB	-rw-rw-r--	2022-10-31 11:36
README.md	4.5 KB	-rw-rw-r--	2022-10-31 11:36
Zend.m4	13.84 KB	-rw-rw-r--	2022-10-31 11:36
bench.php	7.46 KB	-rw-rw-r--	2022-10-31 11:36
micro_bench.php	7.06 KB	-rw-rw-r--	2022-10-31 11:36
zend.c	49.6 KB	-rw-rw-r--	2022-10-31 11:36
zend.h	13.59 KB	-rw-rw-r--	2022-10-31 11:36
zend.lo	308 B	-rw-r--r--	2024-03-12 14:34
zend.o	258.71 KB	-rw-r--r--	2024-03-12 14:34
zend_API.c	129.43 KB	-rw-rw-r--	2022-10-31 11:36
zend_API.h	69.44 KB	-rw-rw-r--	2022-10-31 11:36
zend_API.lo	320 B	-rw-r--r--	2024-03-12 14:34
zend_API.o	802.77 KB	-rw-r--r--	2024-03-12 14:34
zend_alloc.c	89.53 KB	-rw-rw-r--	2022-10-31 11:36
zend_alloc.h	18.76 KB	-rw-rw-r--	2022-10-31 11:36
zend_alloc.lo	326 B	-rw-r--r--	2024-03-12 14:33
zend_alloc.o	533.58 KB	-rw-r--r--	2024-03-12 14:33
zend_alloc_sizes.h	2.57 KB	-rw-rw-r--	2022-10-31 11:36
zend_arena.h	5.93 KB	-rw-rw-r--	2022-10-31 11:36
zend_ast.c	58.76 KB	-rw-rw-r--	2022-10-31 11:36
zend_ast.h	11.42 KB	-rw-rw-r--	2022-10-31 11:36
zend_ast.lo	320 B	-rw-r--r--	2024-03-12 14:34
zend_ast.o	567.83 KB	-rw-r--r--	2024-03-12 14:34
zend_bitset.h	6.72 KB	-rw-rw-r--	2022-10-31 11:36
zend_build.h	1.59 KB	-rw-rw-r--	2022-10-31 11:36
zend_builtin_functions.c	73.69 KB	-rw-rw-r--	2022-10-31 11:36
zend_builtin_functions.h	1.47 KB	-rw-rw-r--	2022-10-31 11:36
zend_builtin_functions.lo	362 B	-rw-r--r--	2024-03-12 14:34
zend_builtin_functions.o	340.98 KB	-rw-r--r--	2024-03-12 14:34
zend_closures.c	26.62 KB	-rw-rw-r--	2022-10-31 11:36
zend_closures.h	2.16 KB	-rw-rw-r--	2022-10-31 11:36
zend_closures.lo	335 B	-rw-r--r--	2024-03-12 14:34
zend_closures.o	146.15 KB	-rw-r--r--	2024-03-12 14:34
zend_compile.c	261.93 KB	-rw-rw-r--	2022-10-31 11:36
zend_compile.h	42.62 KB	-rw-rw-r--	2022-10-31 11:36
zend_compile.lo	332 B	-rw-r--r--	2024-03-12 14:33
zend_compile.o	1.14 MB	-rw-r--r--	2024-03-12 14:33
zend_config.h	32 B	-rw-r--r--	2024-03-12 14:19
zend_config.w32.h	2.55 KB	-rw-rw-r--	2022-10-31 11:36
zend_constants.c	17.19 KB	-rw-rw-r--	2022-10-31 11:36
zend_constants.h	6.15 KB	-rw-rw-r--	2022-10-31 11:36
zend_constants.lo	338 B	-rw-r--r--	2024-03-12 14:33
zend_constants.o	106.83 KB	-rw-r--r--	2024-03-12 14:33
zend_cpuinfo.c	4.46 KB	-rw-rw-r--	2022-10-31 11:36
zend_cpuinfo.h	7.06 KB	-rw-rw-r--	2022-10-31 11:36
zend_cpuinfo.lo	332 B	-rw-r--r--	2024-03-12 14:34
zend_cpuinfo.o	35.52 KB	-rw-r--r--	2024-03-12 14:34
zend_default_classes.c	1.64 KB	-rw-rw-r--	2022-10-31 11:36
zend_default_classes.lo	356 B	-rw-r--r--	2024-03-12 14:34
zend_default_classes.o	52.27 KB	-rw-r--r--	2024-03-12 14:34
zend_dtrace.c	3.99 KB	-rw-rw-r--	2022-10-31 11:36
zend_dtrace.d	2.13 KB	-rw-rw-r--	2022-10-31 11:36
zend_dtrace.h	1.89 KB	-rw-rw-r--	2022-10-31 11:36
zend_dtrace.lo	329 B	-rw-r--r--	2024-03-12 14:33
zend_dtrace.o	49.02 KB	-rw-r--r--	2024-03-12 14:33
zend_errors.h	2 KB	-rw-rw-r--	2022-10-31 11:36
zend_exceptions.c	33.99 KB	-rw-rw-r--	2022-10-31 11:36
zend_exceptions.h	3.76 KB	-rw-rw-r--	2022-10-31 11:36
zend_exceptions.lo	341 B	-rw-r--r--	2024-03-12 14:34
zend_exceptions.o	329.01 KB	-rw-r--r--	2024-03-12 14:34
zend_execute.c	145.48 KB	-rw-rw-r--	2022-10-31 11:36
zend_execute.h	16.53 KB	-rw-rw-r--	2022-10-31 11:36
zend_execute.lo	332 B	-rw-r--r--	2024-03-12 14:35
zend_execute.o	5.96 MB	-rw-r--r--	2024-03-12 14:35
zend_execute_API.c	46.12 KB	-rw-rw-r--	2022-10-31 11:36
zend_execute_API.lo	344 B	-rw-r--r--	2024-03-12 14:33
zend_execute_API.o	245.2 KB	-rw-r--r--	2024-03-12 14:33
zend_extensions.c	9.94 KB	-rw-rw-r--	2022-10-31 11:36
zend_extensions.h	5.93 KB	-rw-rw-r--	2022-10-31 11:36
zend_extensions.lo	341 B	-rw-r--r--	2024-03-12 14:34
zend_extensions.o	71.02 KB	-rw-r--r--	2024-03-12 14:34
zend_float.c	1.75 KB	-rw-rw-r--	2022-10-31 11:36
zend_float.h	15.08 KB	-rw-rw-r--	2022-10-31 11:36
zend_float.lo	326 B	-rw-r--r--	2024-03-12 14:34
zend_float.o	48.54 KB	-rw-r--r--	2024-03-12 14:34
zend_gc.c	39.12 KB	-rw-rw-r--	2022-10-31 11:36
zend_gc.h	2.8 KB	-rw-rw-r--	2022-10-31 11:36
zend_gc.lo	317 B	-rw-r--r--	2024-03-12 14:34
zend_gc.o	111.8 KB	-rw-r--r--	2024-03-12 14:34
zend_generators.c	37.91 KB	-rw-rw-r--	2022-10-31 11:36
zend_generators.h	7.18 KB	-rw-rw-r--	2022-10-31 11:36
zend_generators.lo	341 B	-rw-r--r--	2024-03-12 14:34
zend_generators.o	227.82 KB	-rw-r--r--	2024-03-12 14:34
zend_globals.h	7.58 KB	-rw-rw-r--	2022-10-31 11:36
zend_globals_macros.h	2.74 KB	-rw-rw-r--	2022-10-31 11:36
zend_hash.c	70.2 KB	-rw-rw-r--	2022-10-31 11:36
zend_hash.h	35.58 KB	-rw-rw-r--	2022-10-31 11:36
zend_hash.lo	323 B	-rw-r--r--	2024-03-12 14:34
zend_hash.o	358.47 KB	-rw-r--r--	2024-03-12 14:34
zend_highlight.c	5.77 KB	-rw-rw-r--	2022-10-31 11:36
zend_highlight.h	2.21 KB	-rw-rw-r--	2022-10-31 11:36
zend_highlight.lo	338 B	-rw-r--r--	2024-03-12 14:33
zend_highlight.o	66.79 KB	-rw-r--r--	2024-03-12 14:33
zend_inheritance.c	90.02 KB	-rw-rw-r--	2022-10-31 11:36
zend_inheritance.h	1.98 KB	-rw-rw-r--	2022-10-31 11:36
zend_inheritance.lo	344 B	-rw-r--r--	2024-03-12 14:34
zend_inheritance.o	434.91 KB	-rw-r--r--	2024-03-12 14:34
zend_ini.c	17.4 KB	-rw-rw-r--	2022-10-31 11:36
zend_ini.h	9.59 KB	-rw-rw-r--	2022-10-31 11:36
zend_ini.lo	320 B	-rw-r--r--	2024-03-12 14:34
zend_ini.o	132.13 KB	-rw-r--r--	2024-03-12 14:34
zend_ini_parser.c	60.95 KB	-rw-r--r--	2022-10-31 11:36
zend_ini_parser.h	2.34 KB	-rw-r--r--	2022-10-31 11:36
zend_ini_parser.lo	341 B	-rw-r--r--	2024-03-12 14:33
zend_ini_parser.o	171.41 KB	-rw-r--r--	2024-03-12 14:33
zend_ini_parser.output	20.91 KB	-rw-r--r--	2022-10-31 11:36
zend_ini_parser.y	11.79 KB	-rw-rw-r--	2022-10-31 11:36
zend_ini_scanner.c	100.26 KB	-rw-r--r--	2022-10-31 11:36
zend_ini_scanner.h	1.83 KB	-rw-rw-r--	2022-10-31 11:36
zend_ini_scanner.l	16.77 KB	-rw-rw-r--	2022-10-31 11:36
zend_ini_scanner.lo	344 B	-rw-r--r--	2024-03-12 14:33
zend_ini_scanner.o	239.65 KB	-rw-r--r--	2024-03-12 14:33
zend_ini_scanner_defs.h	187 B	-rw-r--r--	2022-10-31 11:36
zend_interfaces.c	19.22 KB	-rw-rw-r--	2022-10-31 11:36
zend_interfaces.h	4.17 KB	-rw-rw-r--	2022-10-31 11:36
zend_interfaces.lo	341 B	-rw-r--r--	2024-03-12 14:34
zend_interfaces.o	107.88 KB	-rw-r--r--	2024-03-12 14:34
zend_istdiostream.h	1.5 KB	-rw-rw-r--	2022-10-31 11:36
zend_iterators.c	3.13 KB	-rw-rw-r--	2022-10-31 11:36
zend_iterators.h	3.32 KB	-rw-rw-r--	2022-10-31 11:36
zend_iterators.lo	338 B	-rw-r--r--	2024-03-12 14:34
zend_iterators.o	53.67 KB	-rw-r--r--	2024-03-12 14:34
zend_language_parser.c	246.84 KB	-rw-r--r--	2022-10-31 11:36
zend_language_parser.h	4.98 KB	-rw-r--r--	2022-10-31 11:36
zend_language_parser.lo	356 B	-rw-r--r--	2024-03-12 14:33
zend_language_parser.o	372.22 KB	-rw-r--r--	2024-03-12 14:33
zend_language_parser.output	1.29 MB	-rw-r--r--	2022-10-31 11:36
zend_language_parser.y	48.11 KB	-rw-rw-r--	2022-10-31 11:36
zend_language_scanner.c	194.82 KB	-rw-r--r--	2024-03-12 14:32
zend_language_scanner.h	2.67 KB	-rw-rw-r--	2022-10-31 11:36
zend_language_scanner.l	68.12 KB	-rw-rw-r--	2022-10-31 11:36
zend_language_scanner.lo	359 B	-rw-r--r--	2024-03-12 14:33
zend_language_scanner.o	477.44 KB	-rw-r--r--	2024-03-12 14:33
zend_language_scanner_defs.h	309 B	-rw-r--r--	2024-03-12 14:32
zend_list.c	9.12 KB	-rw-rw-r--	2022-10-31 11:36
zend_list.h	3.39 KB	-rw-rw-r--	2022-10-31 11:36
zend_list.lo	323 B	-rw-r--r--	2024-03-12 14:34
zend_list.o	82.94 KB	-rw-r--r--	2024-03-12 14:34
zend_llist.c	6.68 KB	-rw-rw-r--	2022-10-31 11:36
zend_llist.h	3.7 KB	-rw-rw-r--	2022-10-31 11:36
zend_llist.lo	326 B	-rw-r--r--	2024-03-12 14:33
zend_llist.o	45.31 KB	-rw-r--r--	2024-03-12 14:33
zend_long.h	4.2 KB	-rw-rw-r--	2022-10-31 11:36
zend_map_ptr.h	3.09 KB	-rw-rw-r--	2022-10-31 11:36
zend_modules.h	4.68 KB	-rw-rw-r--	2022-10-31 11:36
zend_multibyte.c	7.15 KB	-rw-rw-r--	2022-10-31 11:36
zend_multibyte.h	4.75 KB	-rw-rw-r--	2022-10-31 11:36
zend_multibyte.lo	338 B	-rw-r--r--	2024-03-12 14:34
zend_multibyte.o	68.26 KB	-rw-r--r--	2024-03-12 14:34
zend_multiply.h	9.61 KB	-rw-rw-r--	2022-10-31 11:36
zend_object_handlers.c	56.61 KB	-rw-rw-r--	2022-10-31 11:36
zend_object_handlers.h	13.19 KB	-rw-rw-r--	2022-10-31 11:36
zend_object_handlers.lo	356 B	-rw-r--r--	2024-03-12 14:34
zend_object_handlers.o	320.37 KB	-rw-r--r--	2024-03-12 14:34
zend_objects.c	9.55 KB	-rw-rw-r--	2022-10-31 11:36
zend_objects.h	1.76 KB	-rw-rw-r--	2022-10-31 11:36
zend_objects.lo	332 B	-rw-r--r--	2024-03-12 14:34
zend_objects.o	76.55 KB	-rw-r--r--	2024-03-12 14:34
zend_objects_API.c	6.57 KB	-rw-rw-r--	2022-10-31 11:36
zend_objects_API.h	4.57 KB	-rw-rw-r--	2022-10-31 11:36
zend_objects_API.lo	344 B	-rw-r--r--	2024-03-12 14:34
zend_objects_API.o	61.74 KB	-rw-r--r--	2024-03-12 14:34
zend_opcode.c	33.24 KB	-rw-rw-r--	2022-10-31 11:36
zend_opcode.lo	329 B	-rw-r--r--	2024-03-12 14:33
zend_opcode.o	127.59 KB	-rw-r--r--	2024-03-12 14:33
zend_operators.c	81.41 KB	-rw-rw-r--	2022-10-31 11:36
zend_operators.h	33.35 KB	-rw-rw-r--	2022-10-31 11:36
zend_operators.lo	338 B	-rw-r--r--	2024-03-12 14:33
zend_operators.o	517.25 KB	-rw-r--r--	2024-03-12 14:33
zend_portability.h	19.67 KB	-rw-rw-r--	2022-10-31 11:36
zend_ptr_stack.c	2.96 KB	-rw-rw-r--	2022-10-31 11:36
zend_ptr_stack.h	4.21 KB	-rw-rw-r--	2022-10-31 11:36
zend_ptr_stack.lo	338 B	-rw-r--r--	2024-03-12 14:33
zend_ptr_stack.o	35.73 KB	-rw-r--r--	2024-03-12 14:33
zend_range_check.h	2.93 KB	-rw-rw-r--	2022-10-31 11:36
zend_signal.c	12.73 KB	-rw-rw-r--	2022-10-31 11:36
zend_signal.h	3.99 KB	-rw-rw-r--	2022-10-31 11:36
zend_signal.lo	329 B	-rw-r--r--	2024-03-12 14:34
zend_signal.o	68.41 KB	-rw-r--r--	2024-03-12 14:34
zend_smart_str.c	5.54 KB	-rw-rw-r--	2022-10-31 11:36
zend_smart_str.h	5.4 KB	-rw-rw-r--	2022-10-31 11:36
zend_smart_str.lo	338 B	-rw-r--r--	2024-03-12 14:34
zend_smart_str.o	60.2 KB	-rw-r--r--	2024-03-12 14:34
zend_smart_str_public.h	1.25 KB	-rw-rw-r--	2022-10-31 11:36
zend_smart_string.h	4.29 KB	-rw-rw-r--	2022-10-31 11:36
zend_smart_string_public.h	1.36 KB	-rw-rw-r--	2022-10-31 11:36
zend_sort.c	10.6 KB	-rw-rw-r--	2022-10-31 11:36
zend_sort.h	1.6 KB	-rw-rw-r--	2022-10-31 11:36
zend_sort.lo	323 B	-rw-r--r--	2024-03-12 14:34
zend_sort.o	51.37 KB	-rw-r--r--	2024-03-12 14:34
zend_stack.c	3.89 KB	-rw-rw-r--	2022-10-31 11:36
zend_stack.h	2.3 KB	-rw-rw-r--	2022-10-31 11:36
zend_stack.lo	326 B	-rw-r--r--	2024-03-12 14:33
zend_stack.o	36.35 KB	-rw-r--r--	2024-03-12 14:33
zend_stream.c	7.04 KB	-rw-rw-r--	2022-10-31 11:36
zend_stream.h	3.46 KB	-rw-rw-r--	2022-10-31 11:36
zend_stream.lo	329 B	-rw-r--r--	2024-03-12 14:34
zend_stream.o	64.43 KB	-rw-r--r--	2024-03-12 14:34
zend_string.c	12.44 KB	-rw-rw-r--	2022-10-31 11:36
zend_string.h	17.06 KB	-rw-rw-r--	2022-10-31 11:36
zend_string.lo	329 B	-rw-r--r--	2024-03-12 14:34
zend_string.o	90.5 KB	-rw-r--r--	2024-03-12 14:34
zend_strtod.c	90.48 KB	-rw-rw-r--	2022-10-31 11:36
zend_strtod.h	1.81 KB	-rw-rw-r--	2022-10-31 11:36
zend_strtod.lo	329 B	-rw-r--r--	2024-03-12 14:34
zend_strtod.o	152.94 KB	-rw-r--r--	2024-03-12 14:34
zend_strtod_int.h	3.42 KB	-rw-rw-r--	2022-10-31 11:36
zend_ts_hash.c	7.98 KB	-rw-rw-r--	2022-10-31 11:36
zend_ts_hash.h	5.6 KB	-rw-rw-r--	2022-10-31 11:36
zend_ts_hash.lo	332 B	-rw-r--r--	2024-03-12 14:34
zend_ts_hash.o	50.75 KB	-rw-r--r--	2024-03-12 14:34
zend_type_info.h	3.02 KB	-rw-rw-r--	2022-10-31 11:36
zend_types.h	39.58 KB	-rw-rw-r--	2022-10-31 11:36
zend_variables.c	4.63 KB	-rw-rw-r--	2022-10-31 11:36
zend_variables.h	3.2 KB	-rw-rw-r--	2022-10-31 11:36
zend_variables.lo	338 B	-rw-r--r--	2024-03-12 14:33
zend_variables.o	60.51 KB	-rw-r--r--	2024-03-12 14:33
zend_virtual_cwd.c	42.65 KB	-rw-rw-r--	2022-10-31 11:36
zend_virtual_cwd.h	12.44 KB	-rw-rw-r--	2022-10-31 11:36
zend_virtual_cwd.lo	344 B	-rw-r--r--	2024-03-12 14:34
zend_virtual_cwd.o	102.16 KB	-rw-r--r--	2024-03-12 14:34
zend_vm.h	1.91 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_def.h	264.93 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_execute.h	1.92 MB	-rw-rw-r--	2022-10-31 11:36
zend_vm_execute.skl	3.53 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_gen.php	142.79 KB	-rwxrwxr-x	2022-10-31 11:36
zend_vm_handlers.h	85.91 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_opcodes.c	8.32 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_opcodes.h	11.8 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_opcodes.lo	341 B	-rw-r--r--	2024-03-12 14:33
zend_vm_opcodes.o	40.12 KB	-rw-r--r--	2024-03-12 14:33
zend_vm_trace_handlers.h	3.14 KB	-rw-rw-r--	2022-10-31 11:36
zend_vm_trace_map.h	2.59 KB	-rw-rw-r--	2022-10-31 11:36
zend_weakrefs.c	6.42 KB	-rw-rw-r--	2022-10-31 11:36
zend_weakrefs.h	1.41 KB	-rw-rw-r--	2022-10-31 11:36
zend_weakrefs.lo	335 B	-rw-r--r--	2024-03-12 14:34
zend_weakrefs.o	82.87 KB	-rw-r--r--	2024-03-12 14:34

Rename

/*
   +----------------------------------------------------------------------+
   | PHP Version 7                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) The PHP Group                                          |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Author: Dmitry Stogov <dmitry@php.net>                               |
   +----------------------------------------------------------------------+
 */

#include <zend.h>
#include "zend_smart_str.h"
#include "zend_smart_string.h"

#define SMART_STR_OVERHEAD   (ZEND_MM_OVERHEAD + _ZSTR_HEADER_SIZE + 1)
#define SMART_STR_START_SIZE 256
#define SMART_STR_START_LEN  (SMART_STR_START_SIZE - SMART_STR_OVERHEAD)
#define SMART_STR_PAGE       4096

#define SMART_STR_NEW_LEN(len) \
	(ZEND_MM_ALIGNED_SIZE_EX(len + SMART_STR_OVERHEAD, SMART_STR_PAGE) - SMART_STR_OVERHEAD)

ZEND_API void ZEND_FASTCALL smart_str_erealloc(smart_str *str, size_t len)
{
	if (UNEXPECTED(!str->s)) {
		str->a = len <= SMART_STR_START_LEN
				? SMART_STR_START_LEN
				: SMART_STR_NEW_LEN(len);
		str->s = zend_string_alloc(str->a, 0);
		ZSTR_LEN(str->s) = 0;
	} else {
		str->a = SMART_STR_NEW_LEN(len);
		str->s = (zend_string *) erealloc2(str->s, str->a + _ZSTR_HEADER_SIZE + 1, _ZSTR_HEADER_SIZE + ZSTR_LEN(str->s));
	}
}

ZEND_API void ZEND_FASTCALL smart_str_realloc(smart_str *str, size_t len)
{
	if (UNEXPECTED(!str->s)) {
		str->a = len <= SMART_STR_START_LEN
				? SMART_STR_START_LEN
				: SMART_STR_NEW_LEN(len);
		str->s = zend_string_alloc(str->a, 1);
		ZSTR_LEN(str->s) = 0;
	} else {
		str->a = SMART_STR_NEW_LEN(len);
		str->s = (zend_string *) perealloc(str->s, str->a + _ZSTR_HEADER_SIZE + 1, 1);
	}
}

/* Windows uses VK_ESCAPE instead of \e */
#ifndef VK_ESCAPE
#define VK_ESCAPE '\e'
#endif

static size_t zend_compute_escaped_string_len(const char *s, size_t l) {
	size_t i, len = l;
	for (i = 0; i < l; ++i) {
		char c = s[i];
		if (c == '\n' || c == '\r' || c == '\t' ||
			c == '\f' || c == '\v' || c == '\\' || c == VK_ESCAPE) {
			len += 1;
		} else if (c < 32 || c > 126) {
			len += 3;
		}
	}
	return len;
}

ZEND_API void ZEND_FASTCALL smart_str_append_escaped(smart_str *str, const char *s, size_t l) {
	char *res;
	size_t i, len = zend_compute_escaped_string_len(s, l);

smart_str_alloc(str, len, 0);
	res = &ZSTR_VAL(str->s)[ZSTR_LEN(str->s)];
	ZSTR_LEN(str->s) += len;

for (i = 0; i < l; ++i) {
		unsigned char c = s[i];
		if (c < 32 || c == '\\' || c > 126) {
			*res++ = '\\';
			switch (c) {
				case '\n': *res++ = 'n'; break;
				case '\r': *res++ = 'r'; break;
				case '\t': *res++ = 't'; break;
				case '\f': *res++ = 'f'; break;
				case '\v': *res++ = 'v'; break;
				case '\\': *res++ = '\\'; break;
				case VK_ESCAPE: *res++ = 'e'; break;
				default:
					*res++ = 'x';
					if ((c >> 4) < 10) {
						*res++ = (c >> 4) + '0';
					} else {
						*res++ = (c >> 4) + 'A' - 10;
					}
					if ((c & 0xf) < 10) {
						*res++ = (c & 0xf) + '0';
					} else {
						*res++ = (c & 0xf) + 'A' - 10;
					}
			}
		} else {
			*res++ = c;
		}
	}
}

ZEND_API void smart_str_append_printf(smart_str *dest, const char *format, ...) {
	va_list arg;
	va_start(arg, format);
	zend_printf_to_smart_str(dest, format, arg);
	va_end(arg);
}

#define SMART_STRING_OVERHEAD   (ZEND_MM_OVERHEAD + 1)
#define SMART_STRING_START_SIZE 256
#define SMART_STRING_START_LEN  (SMART_STRING_START_SIZE - SMART_STRING_OVERHEAD)
#define SMART_STRING_PAGE       4096

ZEND_API void ZEND_FASTCALL _smart_string_alloc_persistent(smart_string *str, size_t len)
{
	if (!str->c) {
		str->len = 0;
		if (len <= SMART_STRING_START_LEN) {
			str->a = SMART_STRING_START_LEN;
		} else {
			str->a = ZEND_MM_ALIGNED_SIZE_EX(len + SMART_STRING_OVERHEAD, SMART_STRING_PAGE) - SMART_STRING_OVERHEAD;
		}
		str->c = pemalloc(str->a + 1, 1);
	} else {
		if (UNEXPECTED((size_t) len > SIZE_MAX - str->len)) {
			zend_error(E_ERROR, "String size overflow");
		}
		len += str->len;
		str->a = ZEND_MM_ALIGNED_SIZE_EX(len + SMART_STRING_OVERHEAD, SMART_STRING_PAGE) - SMART_STRING_OVERHEAD;
		str->c = perealloc(str->c, str->a + 1, 1);
	}
}

ZEND_API void ZEND_FASTCALL _smart_string_alloc(smart_string *str, size_t len)
{
	if (!str->c) {
		str->len = 0;
		if (len <= SMART_STRING_START_LEN) {
			str->a = SMART_STRING_START_LEN;
			str->c = emalloc(SMART_STRING_START_LEN + 1);
		} else {
			str->a = ZEND_MM_ALIGNED_SIZE_EX(len + SMART_STRING_OVERHEAD, SMART_STRING_PAGE) - SMART_STRING_OVERHEAD;
			if (EXPECTED(str->a < (ZEND_MM_CHUNK_SIZE - SMART_STRING_OVERHEAD))) {
				str->c = emalloc_large(str->a + 1);
			} else {
				/* allocate a huge chunk */
				str->c = emalloc(str->a + 1);
			}
		}
	} else {
		if (UNEXPECTED((size_t) len > SIZE_MAX - str->len)) {
			zend_error(E_ERROR, "String size overflow");
		}
		len += str->len;
		str->a = ZEND_MM_ALIGNED_SIZE_EX(len + SMART_STRING_OVERHEAD, SMART_STRING_PAGE) - SMART_STRING_OVERHEAD;
		str->c = erealloc2(str->c, str->a + 1, str->len);
	}
}