Hi,
How about using the value of mbstring.script_encoding to determine
whether to enable the encoding conversion feature? If the value is
the same as that of mbstring.internal_encoding, then no conversion
should be needed in the first place. Besides we can define some
singular value like "none" that completely disables the conversion.
Regarding the dependency on mbstring extension, I think it's time to
enable mbstring by default.
Regards,
Moriyoshi
On Thu, Nov 18, 2010 at 11:26 PM, Dmitry Stogov <dmi...@zend.com> wrote:
> Hi,
>
> The proposed patch allows compiling PHP with --enable-zend-multibyte and
> then enable or disable multibyte support at run-time using
> zend.multibyte=0/1 in php.ini. As result the single binary will be able to
> support multibyte encodings and run without zend-multibyte overhead
> dependent on configuration.
>
> The patch doesn't affect PHP compiled without --enable-zend-multibyte.
>
> I'm going to commit it into trunk before alpha.
> Any objections?
>
> Thanks. Dmitry.
>
> Index: ext/standard/info.c
> ===================================================================
> --- ext/standard/info.c (revision 305494)
> +++ ext/standard/info.c (working copy)
> @@ -760,7 +760,7 @@
> php_info_print_table_row(2, "Zend Memory Manager",
> is_zend_mm(TSRMLS_C) ? "enabled" : "disabled" );
>
> #ifdef ZEND_MULTIBYTE
> - php_info_print_table_row(2, "Zend Multibyte Support",
> "enabled");
> + php_info_print_table_row(2, "Zend Multibyte Support",
> CG(multibyte) ? "enabled" : "disabled");
> #else
> php_info_print_table_row(2, "Zend Multibyte Support",
> "disabled");
> #endif
> Index: ext/mbstring/mbstring.c
> ===================================================================
> --- ext/mbstring/mbstring.c (revision 305494)
> +++ ext/mbstring/mbstring.c (working copy)
> @@ -1132,6 +1132,9 @@
> {
> int *list, size;
>
> + if (!CG(multibyte)) {
> + return FAILURE;
> + }
> if (php_mb_parse_encoding_list(new_value, new_value_length, &list,
> &size, 1 TSRMLS_CC)) {
> if (MBSTRG(script_encoding_list) != NULL) {
> free(MBSTRG(script_encoding_list));
> @@ -1442,8 +1445,10 @@
> PHP_RINIT(mb_regex) (INIT_FUNC_ARGS_PASSTHRU);
> #endif
> #ifdef ZEND_MULTIBYTE
> -
> zend_multibyte_set_internal_encoding(mbfl_no_encoding2name(MBSTRG(internal_encoding))
> TSRMLS_CC);
> - php_mb_set_zend_encoding(TSRMLS_C);
> + if (CG(multibyte)) {
> +
> zend_multibyte_set_internal_encoding(mbfl_no_encoding2name(MBSTRG(internal_encoding))
> TSRMLS_CC);
> + php_mb_set_zend_encoding(TSRMLS_C);
> + }
> #endif /* ZEND_MULTIBYTE */
>
> return SUCCESS;
> @@ -1570,7 +1575,7 @@
> MBSTRG(current_internal_encoding) = no_encoding;
> #ifdef ZEND_MULTIBYTE
> /* TODO: make independent from
> mbstring.encoding_translation? */
> - if (MBSTRG(encoding_translation)) {
> + if (CG(multibyte) && MBSTRG(encoding_translation)) {
> zend_multibyte_set_internal_encoding(name
> TSRMLS_CC);
> }
> #endif /* ZEND_MULTIBYTE */
> Index: Zend/zend.c
> ===================================================================
> --- Zend/zend.c (revision 305494)
> +++ Zend/zend.c (working copy)
> @@ -93,6 +93,7 @@
> ZEND_INI_ENTRY("error_reporting", NULL,
> ZEND_INI_ALL, OnUpdateErrorReporting)
> STD_ZEND_INI_BOOLEAN("zend.enable_gc", "1",
> ZEND_INI_ALL, OnUpdateGCEnabled, gc_enabled,
> zend_gc_globals, gc_globals)
> #ifdef ZEND_MULTIBYTE
> + STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR,
> OnUpdateBool, multibyte, zend_compiler_globals, compiler_globals)
> STD_ZEND_INI_BOOLEAN("detect_unicode", "1", ZEND_INI_ALL,
> OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
> #endif
> ZEND_INI_END()
> Index: Zend/zend_language_scanner.l
> ===================================================================
> --- Zend/zend_language_scanner.l (revision 305494)
> +++ Zend/zend_language_scanner.l (working copy)
> @@ -181,7 +181,7 @@
> lex_state->filename = zend_get_compiled_filename(TSRMLS_C);
> lex_state->lineno = CG(zend_lineno);
>
> -#ifdef ZEND_MULTIBYTE
> +#ifdef ZEND_MULTIBYTE
> lex_state->script_org = SCNG(script_org);
> lex_state->script_org_size = SCNG(script_org_size);
> lex_state->script_filtered = SCNG(script_filtered);
> @@ -270,27 +270,32 @@
>
> if (size != -1) {
> #ifdef ZEND_MULTIBYTE
> - if (zend_multibyte_read_script((unsigned char *)buf, size
> TSRMLS_CC) != 0) {
> - return FAILURE;
> - }
> + if (CG(multibyte)) {
> + if (zend_multibyte_read_script((unsigned char *)buf,
> size TSRMLS_CC) != 0) {
> + return FAILURE;
> + }
>
> - SCNG(yy_in) = NULL;
> + SCNG(yy_in) = NULL;
>
> - zend_multibyte_set_filter(NULL TSRMLS_CC);
> + zend_multibyte_set_filter(NULL TSRMLS_CC);
>
> - if (!SCNG(input_filter)) {
> - SCNG(script_filtered) = (unsigned
> char*)emalloc(SCNG(script_org_size)+1);
> - memcpy(SCNG(script_filtered), SCNG(script_org),
> SCNG(script_org_size)+1);
> - SCNG(script_filtered_size) = SCNG(script_org_size);
> + if (!SCNG(input_filter)) {
> + SCNG(script_filtered) = (unsigned
> char*)emalloc(SCNG(script_org_size)+1);
> + memcpy(SCNG(script_filtered),
> SCNG(script_org), SCNG(script_org_size)+1);
> + SCNG(script_filtered_size) =
> SCNG(script_org_size);
> + } else {
> + SCNG(input_filter)(&SCNG(script_filtered),
> &SCNG(script_filtered_size), SCNG(script_org), SCNG(script_org_size)
> TSRMLS_CC);
> + if (SCNG(script_filtered) == NULL) {
> + zend_error_noreturn(E_COMPILE_ERROR,
> "Could not convert the script from the detected "
> + "encoding \"%s\" to
> a compatible encoding", LANG_SCNG(script_encoding)->name);
> + }
> + }
> + SCNG(yy_start) = SCNG(script_filtered) - offset;
> + yy_scan_buffer((char *)SCNG(script_filtered),
> SCNG(script_filtered_size) TSRMLS_CC);
> } else {
> - SCNG(input_filter)(&SCNG(script_filtered),
> &SCNG(script_filtered_size), SCNG(script_org), SCNG(script_org_size)
> TSRMLS_CC);
> - if (SCNG(script_filtered) == NULL) {
> - zend_error_noreturn(E_COMPILE_ERROR, "Could
> not convert the script from the detected "
> - "encoding \"%s\" to a
> compatible encoding", LANG_SCNG(script_encoding)->name);
> - }
> + SCNG(yy_start) = buf - offset;
> + yy_scan_buffer(buf, size TSRMLS_CC);
> }
> - SCNG(yy_start) = SCNG(script_filtered) - offset;
> - yy_scan_buffer((char *)SCNG(script_filtered),
> SCNG(script_filtered_size) TSRMLS_CC);
> #else /* !ZEND_MULTIBYTE */
> SCNG(yy_start) = buf - offset;
> yy_scan_buffer(buf, size TSRMLS_CC);
> @@ -438,20 +443,24 @@
> SCNG(yy_start) = NULL;
>
> #ifdef ZEND_MULTIBYTE
> - SCNG(script_org) = (unsigned char *)estrdup(str->value.str.val);
> - SCNG(script_org_size) = str->value.str.len;
> + if (CG(multibyte)) {
> + SCNG(script_org) = (unsigned char
> *)estrdup(str->value.str.val);
> + SCNG(script_org_size) = str->value.str.len;
>
> - zend_multibyte_set_filter(CG(internal_encoding) TSRMLS_CC);
> + zend_multibyte_set_filter(CG(internal_encoding) TSRMLS_CC);
>
> - if (!SCNG(input_filter)) {
> - SCNG(script_filtered) = (unsigned
> char*)emalloc(SCNG(script_org_size)+1);
> - memcpy(SCNG(script_filtered), SCNG(script_org),
> SCNG(script_org_size)+1);
> - SCNG(script_filtered_size) = SCNG(script_org_size);
> + if (!SCNG(input_filter)) {
> + SCNG(script_filtered) = (unsigned
> char*)emalloc(SCNG(script_org_size)+1);
> + memcpy(SCNG(script_filtered), SCNG(script_org),
> SCNG(script_org_size)+1);
> + SCNG(script_filtered_size) = SCNG(script_org_size);
> + } else {
> + SCNG(input_filter)(&SCNG(script_filtered),
> &SCNG(script_filtered_size), SCNG(script_org), SCNG(script_org_size)
> TSRMLS_CC);
> + }
> +
> + yy_scan_buffer((char *)SCNG(script_filtered),
> SCNG(script_filtered_size) TSRMLS_CC);
> } else {
> - SCNG(input_filter)(&SCNG(script_filtered),
> &SCNG(script_filtered_size), SCNG(script_org), SCNG(script_org_size)
> TSRMLS_CC);
> + yy_scan_buffer(str->value.str.val, str->value.str.len
> TSRMLS_CC);
> }
> -
> - yy_scan_buffer((char *)SCNG(script_filtered),
> SCNG(script_filtered_size) TSRMLS_CC);
> #else /* !ZEND_MULTIBYTE */
> yy_scan_buffer(str->value.str.val, str->value.str.len TSRMLS_CC);
> #endif /* ZEND_MULTIBYTE */
> Index: Zend/zend_compile.c
> ===================================================================
> --- Zend/zend_compile.c (revision 305494)
> +++ Zend/zend_compile.c (working copy)
> @@ -149,14 +149,12 @@
>
> /* NULL, name length, filename length, last accepting char position
> length */
> result->value.str.len = 1+name_length+strlen(filename)+char_pos_len;
> -#ifdef ZEND_MULTIBYTE
> +
> /* must be binary safe */
> result->value.str.val = (char *) safe_emalloc(result->value.str.len,
> 1, 1);
> result->value.str.val[0] = '\0';
> sprintf(result->value.str.val+1, "%s%s%s", name, filename,
> char_pos_buf);
> -#else
> - zend_spprintf(&result->value.str.val, 0, "%c%s%s%s", '\0', name,
> filename, char_pos_buf);
> -#endif /* ZEND_MULTIBYTE */
> +
> result->type = IS_STRING;
> Z_SET_REFCOUNT_P(result, 1);
> }
> @@ -5861,51 +5859,53 @@
> CG(declarables).ticks = val->u.constant;
> #ifdef ZEND_MULTIBYTE
> } else if (!zend_binary_strcasecmp(var->u.constant.value.str.val,
> var->u.constant.value.str.len, "encoding", sizeof("encoding")-1)) {
> - zend_encoding *new_encoding, *old_encoding;
> - zend_encoding_filter old_input_filter;
> + if (CG(multibyte)) {
> + zend_encoding *new_encoding, *old_encoding;
> + zend_encoding_filter old_input_filter;
>
> - if ((Z_TYPE(val->u.constant) & IS_CONSTANT_TYPE_MASK) ==
> IS_CONSTANT) {
> - zend_error(E_COMPILE_ERROR, "Cannot use constants as
> encoding");
> - }
> -
> - /*
> - * Check that the pragma comes before any opcodes. If the
> compilation
> - * got as far as this, the previous portion of the script
> must have been
> - * parseable according to the .ini script_encoding setting.
> We still
> - * want to tell them to put declare() at the top.
> - */
> - {
> - int num = CG(active_op_array)->last;
> - /* ignore ZEND_EXT_STMT and ZEND_TICKS */
> - while (num > 0 &&
> - (CG(active_op_array)->opcodes[num-1].opcode
> == ZEND_EXT_STMT ||
> - CG(active_op_array)->opcodes[num-1].opcode
> == ZEND_TICKS)) {
> - --num;
> + if ((Z_TYPE(val->u.constant) &
> IS_CONSTANT_TYPE_MASK) == IS_CONSTANT) {
> + zend_error(E_COMPILE_ERROR, "Cannot use
> constants as encoding");
> }
>
> - if (num > 0) {
> - zend_error(E_COMPILE_ERROR, "Encoding
> declaration pragma must be the very first statement in the script");
> + /*
> + * Check that the pragma comes before any opcodes.
> If the compilation
> + * got as far as this, the previous portion of the
> script must have been
> + * parseable according to the .ini script_encoding
> setting. We still
> + * want to tell them to put declare() at the top.
> + */
> + {
> + int num = CG(active_op_array)->last;
> + /* ignore ZEND_EXT_STMT and ZEND_TICKS */
> + while (num > 0 &&
> +
> (CG(active_op_array)->opcodes[num-1].opcode == ZEND_EXT_STMT ||
> +
> CG(active_op_array)->opcodes[num-1].opcode == ZEND_TICKS)) {
> + --num;
> + }
> +
> + if (num > 0) {
> + zend_error(E_COMPILE_ERROR,
> "Encoding declaration pragma must be the very first statement in the
> script");
> + }
> }
> - }
> - CG(encoding_declared) = 1;
> + CG(encoding_declared) = 1;
>
> - convert_to_string(&val->u.constant);
> - new_encoding =
> zend_multibyte_fetch_encoding(val->u.constant.value.str.val);
> - if (!new_encoding) {
> - zend_error(E_COMPILE_WARNING, "Unsupported encoding
> [%s]", val->u.constant.value.str.val);
> - } else {
> - old_input_filter = LANG_SCNG(input_filter);
> - old_encoding = LANG_SCNG(script_encoding);
> - zend_multibyte_set_filter(new_encoding TSRMLS_CC);
> + convert_to_string(&val->u.constant);
> + new_encoding =
> zend_multibyte_fetch_encoding(val->u.constant.value.str.val);
> + if (!new_encoding) {
> + zend_error(E_COMPILE_WARNING, "Unsupported
> encoding [%s]", val->u.constant.value.str.val);
> + } else {
> + old_input_filter = LANG_SCNG(input_filter);
> + old_encoding = LANG_SCNG(script_encoding);
> + zend_multibyte_set_filter(new_encoding
> TSRMLS_CC);
>
> - /* need to re-scan if input filter changed */
> - if (old_input_filter != LANG_SCNG(input_filter) ||
> - ((old_input_filter ==
> zend_multibyte_script_encoding_filter) &&
> - (new_encoding != old_encoding))) {
> -
> zend_multibyte_yyinput_again(old_input_filter, old_encoding TSRMLS_CC);
> + /* need to re-scan if input filter changed
> */
> + if (old_input_filter !=
> LANG_SCNG(input_filter) ||
> + ((old_input_filter ==
> zend_multibyte_script_encoding_filter) &&
> + (new_encoding != old_encoding))) {
> +
> zend_multibyte_yyinput_again(old_input_filter, old_encoding TSRMLS_CC);
> + }
> }
> }
> - efree(val->u.constant.value.str.val);
> + zval_dtor(&val->u.constant);
> #else /* !ZEND_MULTIBYTE */
> } else if (!zend_binary_strcasecmp(var->u.constant.value.str.val,
> var->u.constant.value.str.len, "encoding", sizeof("encoding")-1)) {
> /* Do not generate any kind of warning for encoding declares
> */
> Index: Zend/tests/multibyte/multibyte_encoding_002.phpt
> ===================================================================
> --- Zend/tests/multibyte/multibyte_encoding_002.phpt (revision 305496)
> +++ Zend/tests/multibyte/multibyte_encoding_002.phpt (working copy)
> @@ -10,6 +10,7 @@
> }
> ?>
> --INI--
> +zend.multibyte=1
> mbstring.internal_encoding=iso-8859-1
> --FILE--
> ï>¿<?php
> Index: Zend/tests/multibyte/multibyte_encoding_003.phpt
> ===================================================================
> --- Zend/tests/multibyte/multibyte_encoding_003.phpt (revision 305496)
> +++ Zend/tests/multibyte/multibyte_encoding_003.phpt (working copy)
> @@ -10,6 +10,7 @@
> }
> ?>
> --INI--
> +zend.multibyte=1
> mbstring.internal_encoding=iso-8859-1
> --FILE--
> ÿþ<
> Index: Zend/tests/multibyte/multibyte_encoding_004.phpt
> ===================================================================
> --- Zend/tests/multibyte/multibyte_encoding_004.phpt (revision 305496)
> +++ Zend/tests/multibyte/multibyte_encoding_004.phpt (working copy)
> @@ -10,6 +10,7 @@
> }
> ?>
> --INI--
> +zend.multibyte=1
> mbstring.script_encoding=Shift_JIS
> mbstring.internal_encoding=Shift_JIS
> --FILE--
> Index: Zend/tests/multibyte/multibyte_encoding_005.phpt
> ===================================================================
> --- Zend/tests/multibyte/multibyte_encoding_005.phpt (revision 305496)
> +++ Zend/tests/multibyte/multibyte_encoding_005.phpt (working copy)
> @@ -10,6 +10,7 @@
> }
> ?>
> --INI--
> +zend.multibyte=1
> mbstring.encoding_translation = On
> mbstring.script_encoding=Shift_JIS
> mbstring.internal_encoding=UTF-8
> Index: Zend/tests/multibyte/multibyte_encoding_001.phpt
> ===================================================================
> --- Zend/tests/multibyte/multibyte_encoding_001.phpt (revision 305496)
> +++ Zend/tests/multibyte/multibyte_encoding_001.phpt (working copy)
> @@ -10,6 +10,7 @@
> }
> ?>
> --INI--
> +zend.multibyte=1
> mbstring.internal_encoding=SJIS
> --FILE--
> <?php
> Index: Zend/zend_globals.h
> ===================================================================
> --- Zend/zend_globals.h (revision 305494)
> +++ Zend/zend_globals.h (working copy)
> @@ -153,6 +153,7 @@
> #ifdef ZEND_MULTIBYTE
> zend_encoding **script_encoding_list;
> size_t script_encoding_list_size;
> + zend_bool multibyte;
> zend_bool detect_unicode;
> zend_bool encoding_declared;
>
>
>
--
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