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Refactor php_pcre_replace to return zend_string

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This commit is contained in:
Xinchen Hui 2014-03-16 08:44:07 +08:00
parent 6dd3d5cb36
commit ef1e006bd6
3 changed files with 66 additions and 79 deletions
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124
ext/pcre/php_pcre.c
View file

@ -963,10 +963,10 @@ static int preg_do_eval(char *eval_str, int eval_str_len, char *subject,
/* {{{ php_pcre_replace /* {{{ php_pcre_replace
*/ */
PHPAPI char *php_pcre_replace(zend_string *regex, PHPAPI zend_string *php_pcre_replace(zend_string *regex,
char *subject, int subject_len, char *subject, int subject_len,
zval *replace_val, int is_callable_replace, zval *replace_val, int is_callable_replace,
int *result_len, int limit, int *replace_count TSRMLS_DC) int limit, int *replace_count TSRMLS_DC)
{ {
pcre_cache_entry *pce; /* Compiled regular expression */ pcre_cache_entry *pce; /* Compiled regular expression */
@ -976,13 +976,13 @@ PHPAPI char *php_pcre_replace(zend_string *regex,
} }
return php_pcre_replace_impl(pce, subject, subject_len, replace_val, return php_pcre_replace_impl(pce, subject, subject_len, replace_val,
is_callable_replace, result_len, limit, replace_count TSRMLS_CC); is_callable_replace, limit, replace_count TSRMLS_CC);
} }
/* }}} */ /* }}} */
/* {{{ php_pcre_replace_impl() */ /* {{{ php_pcre_replace_impl() */
PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int subject_len, zval *replace_val, PHPAPI zend_string *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int subject_len, zval *replace_val,
int is_callable_replace, int *result_len, int limit, int *replace_count TSRMLS_DC) int is_callable_replace, int limit, int *replace_count TSRMLS_DC)
{ {
pcre_extra *extra = pce->extra;/* Holds results of studying */ pcre_extra *extra = pce->extra;/* Holds results of studying */
pcre_extra extra_data; /* Used locally for exec options */ pcre_extra extra_data; /* Used locally for exec options */
@ -1002,9 +1002,7 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
int start_offset; /* Where the new search starts */ int start_offset; /* Where the new search starts */
int g_notempty=0; /* If the match should not be empty */ int g_notempty=0; /* If the match should not be empty */
int replace_len=0; /* Length of replacement string */ int replace_len=0; /* Length of replacement string */
char *result, /* Result of replacement */ char *replace=NULL, /* Replacement string */
*replace=NULL, /* Replacement string */
*new_buf, /* Temporary buffer for re-allocation */
*walkbuf, /* Location of current replacement in the result */ *walkbuf, /* Location of current replacement in the result */
*walk, /* Used to walk the replacement string */ *walk, /* Used to walk the replacement string */
*match, /* The current match */ *match, /* The current match */
@ -1012,7 +1010,9 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
*replace_end=NULL, /* End of replacement string */ *replace_end=NULL, /* End of replacement string */
*eval_result, /* Result of eval or custom function */ *eval_result, /* Result of eval or custom function */
walk_last; /* Last walked character */ walk_last; /* Last walked character */
int rc; int rc,
result_len; /* Length of result */
zend_string *result; /* Result of replacement */
if (extra == NULL) { if (extra == NULL) {
extra_data.flags = PCRE_EXTRA_MATCH_LIMIT | PCRE_EXTRA_MATCH_LIMIT_RECURSION; extra_data.flags = PCRE_EXTRA_MATCH_LIMIT | PCRE_EXTRA_MATCH_LIMIT_RECURSION;
@ -1058,13 +1058,13 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
offsets = (int *)safe_emalloc(size_offsets, sizeof(int), 0); offsets = (int *)safe_emalloc(size_offsets, sizeof(int), 0);
alloc_len = 2 * subject_len + 1; alloc_len = 2 * subject_len;
result = safe_emalloc(alloc_len, sizeof(char), 0); result = STR_ALLOC(alloc_len * sizeof(char), 0);
/* Initialize */ /* Initialize */
match = NULL; match = NULL;
*result_len = 0;
start_offset = 0; start_offset = 0;
result_len = 0;
PCRE_G(error_code) = PHP_PCRE_NO_ERROR; PCRE_G(error_code) = PHP_PCRE_NO_ERROR;
while (1) { while (1) {
@ -1090,7 +1090,7 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
/* Set the match location in subject */ /* Set the match location in subject */
match = subject + offsets[0]; match = subject + offsets[0];
new_len = *result_len + offsets[0] - start_offset; /* part before the match */ new_len = result_len + offsets[0] - start_offset; /* part before the match */
/* If evaluating, do it and add the return string's length */ /* If evaluating, do it and add the return string's length */
if (eval) { if (eval) {
@ -1123,25 +1123,22 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
} }
} }
if (new_len + 1 > alloc_len) { if (new_len > alloc_len) {
alloc_len = 1 + alloc_len + 2 * new_len; alloc_len = alloc_len + 2 * new_len;
new_buf = emalloc(alloc_len); result = STR_REALLOC(result, alloc_len, 0);
memcpy(new_buf, result, *result_len);
efree(result);
result = new_buf;
} }
/* copy the part of the string before the match */ /* copy the part of the string before the match */
memcpy(&result[*result_len], piece, match-piece); memcpy(&result->val[result_len], piece, match-piece);
*result_len += match-piece; result_len += match-piece;
/* copy replacement and backrefs */ /* copy replacement and backrefs */
walkbuf = result + *result_len; walkbuf = result->val + result_len;
/* If evaluating or using custom function, copy result to the buffer /* If evaluating or using custom function, copy result to the buffer
* and clean up. */ * and clean up. */
if (eval || is_callable_replace) { if (eval || is_callable_replace) {
memcpy(walkbuf, eval_result, eval_result_len); memcpy(walkbuf, eval_result, eval_result_len);
*result_len += eval_result_len; result_len += eval_result_len;
if (eval_result) efree(eval_result); if (eval_result) efree(eval_result);
} else { /* do regular backreference copying */ } else { /* do regular backreference copying */
walk = replace; walk = replace;
@ -1167,7 +1164,7 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
} }
*walkbuf = '\0'; *walkbuf = '\0';
/* increment the result length by how much we've added to the string */ /* increment the result length by how much we've added to the string */
*result_len += walkbuf - (result + *result_len); result_len += walkbuf - (result->val + result_len);
} }
if (limit != -1) if (limit != -1)
@ -1181,26 +1178,23 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
if (g_notempty != 0 && start_offset < subject_len) { if (g_notempty != 0 && start_offset < subject_len) {
offsets[0] = start_offset; offsets[0] = start_offset;
offsets[1] = start_offset + 1; offsets[1] = start_offset + 1;
memcpy(&result[*result_len], piece, 1); memcpy(&result->val[result_len], piece, 1);
(*result_len)++; result_len++;
} else { } else {
new_len = *result_len + subject_len - start_offset; new_len = result_len + subject_len - start_offset;
if (new_len + 1 > alloc_len) { if (new_len > alloc_len) {
alloc_len = new_len + 1; /* now we know exactly how long it is */ alloc_len = new_len; /* now we know exactly how long it is */
new_buf = safe_emalloc(alloc_len, sizeof(char), 0); result = STR_REALLOC(result, alloc_len, 0);
memcpy(new_buf, result, *result_len);
efree(result);
result = new_buf;
} }
/* stick that last bit of string on our output */ /* stick that last bit of string on our output */
memcpy(&result[*result_len], piece, subject_len - start_offset); memcpy(&result->val[result_len], piece, subject_len - start_offset);
*result_len += subject_len - start_offset; result_len += subject_len - start_offset;
result[*result_len] = '\0'; result->val[result_len] = '\0';
break; break;
} }
} else { } else {
pcre_handle_exec_error(count TSRMLS_CC); pcre_handle_exec_error(count TSRMLS_CC);
efree(result); STR_FREE(result);
result = NULL; result = NULL;
break; break;
} }
@ -1215,6 +1209,9 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
start_offset = offsets[1]; start_offset = offsets[1];
} }
if (result) {
result->len = result_len;
}
efree(offsets); efree(offsets);
efree(subpat_names); efree(subpat_names);
@ -1224,15 +1221,14 @@ PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int sub
/* {{{ php_replace_in_subject /* {{{ php_replace_in_subject
*/ */
static char *php_replace_in_subject(zval *regex, zval *replace, zval *subject, int *result_len, int limit, int is_callable_replace, int *replace_count TSRMLS_DC) static zend_string *php_replace_in_subject(zval *regex, zval *replace, zval *subject, int limit, int is_callable_replace, int *replace_count TSRMLS_DC)
{ {
zval *regex_entry, zval *regex_entry,
*replace_entry = NULL, *replace_entry = NULL,
*replace_value, *replace_value,
empty_replace; empty_replace;
char *subject_value, zend_string *subject_value;
*result; zend_string *result;
int subject_len;
/* Make sure we're dealing with strings. */ /* Make sure we're dealing with strings. */
convert_to_string_ex(subject); convert_to_string_ex(subject);
@ -1243,9 +1239,7 @@ static char *php_replace_in_subject(zval *regex, zval *replace, zval *subject, i
/* If regex is an array */ /* If regex is an array */
if (Z_TYPE_P(regex) == IS_ARRAY) { if (Z_TYPE_P(regex) == IS_ARRAY) {
/* Duplicate subject string for repeated replacement */ /* Duplicate subject string for repeated replacement */
subject_value = estrndup(Z_STRVAL_P(subject), Z_STRLEN_P(subject)); subject_value = STR_INIT(Z_STRVAL_P(subject), Z_STRLEN_P(subject), 0);
subject_len = Z_STRLEN_P(subject);
*result_len = subject_len;
zend_hash_internal_pointer_reset(Z_ARRVAL_P(regex)); zend_hash_internal_pointer_reset(Z_ARRVAL_P(regex));
@ -1276,18 +1270,16 @@ static char *php_replace_in_subject(zval *regex, zval *replace, zval *subject, i
/* Do the actual replacement and put the result back into subject_value /* Do the actual replacement and put the result back into subject_value
for further replacements. */ for further replacements. */
if ((result = php_pcre_replace(Z_STR_P(regex_entry), if ((result = php_pcre_replace(Z_STR_P(regex_entry),
subject_value, subject_value->val,
subject_len, subject_value->len,
replace_value, replace_value,
is_callable_replace, is_callable_replace,
result_len,
limit, limit,
replace_count TSRMLS_CC)) != NULL) { replace_count TSRMLS_CC)) != NULL) {
efree(subject_value); STR_RELEASE(subject_value);
subject_value = result; subject_value = result;
subject_len = *result_len;
} else { } else {
efree(subject_value); STR_RELEASE(subject_value);
return NULL; return NULL;
} }
@ -1301,7 +1293,6 @@ static char *php_replace_in_subject(zval *regex, zval *replace, zval *subject, i
Z_STRLEN_P(subject), Z_STRLEN_P(subject),
replace, replace,
is_callable_replace, is_callable_replace,
result_len,
limit, limit,
replace_count TSRMLS_CC); replace_count TSRMLS_CC);
return result; return result;
@ -1318,10 +1309,9 @@ static void preg_replace_impl(INTERNAL_FUNCTION_PARAMETERS, int is_callable_repl
*subject, *subject,
*subject_entry, *subject_entry,
*zcount = NULL; *zcount = NULL;
char *result;
int result_len;
int limit_val = -1; int limit_val = -1;
long limit = -1; long limit = -1;
zend_string *result;
zend_string *string_key; zend_string *string_key;
ulong num_key; ulong num_key;
zend_string *callback_name; zend_string *callback_name;
@ -1371,24 +1361,21 @@ static void preg_replace_impl(INTERNAL_FUNCTION_PARAMETERS, int is_callable_repl
while ((subject_entry = zend_hash_get_current_data(Z_ARRVAL_P(subject))) != NULL) { while ((subject_entry = zend_hash_get_current_data(Z_ARRVAL_P(subject))) != NULL) {
SEPARATE_ZVAL(subject_entry); SEPARATE_ZVAL(subject_entry);
old_replace_count = replace_count; old_replace_count = replace_count;
if ((result = php_replace_in_subject(regex, replace, subject_entry, &result_len, limit_val, is_callable_replace, &replace_count TSRMLS_CC)) != NULL) { if ((result = php_replace_in_subject(regex, replace, subject_entry, limit_val, is_callable_replace, &replace_count TSRMLS_CC)) != NULL) {
if (!is_filter || replace_count > old_replace_count) { if (!is_filter || replace_count > old_replace_count) {
/* Add to return array */ /* Add to return array */
switch(zend_hash_get_current_key_ex(Z_ARRVAL_P(subject), &string_key, &num_key, 0, NULL)) switch(zend_hash_get_current_key_ex(Z_ARRVAL_P(subject), &string_key, &num_key, 0, NULL))
{ {
case HASH_KEY_IS_STRING: case HASH_KEY_IS_STRING:
//??? add_assoc_str_ex(return_value, string_key->val, string_key->len, result);
add_assoc_stringl_ex(return_value, string_key->val, string_key->len, result, result_len, 0);
efree(result);
break; break;
case HASH_KEY_IS_LONG: case HASH_KEY_IS_LONG:
add_index_stringl(return_value, num_key, result, result_len, 0); add_index_str(return_value, num_key, result);
efree(result);
break; break;
} }
} else { } else {
efree(result); STR_FREE(result);
} }
} }
@ -1396,14 +1383,11 @@ static void preg_replace_impl(INTERNAL_FUNCTION_PARAMETERS, int is_callable_repl
} }
} else { /* if subject is not an array */ } else { /* if subject is not an array */
old_replace_count = replace_count; old_replace_count = replace_count;
if ((result = php_replace_in_subject(regex, replace, subject, &result_len, limit_val, is_callable_replace, &replace_count TSRMLS_CC)) != NULL) { if ((result = php_replace_in_subject(regex, replace, subject, limit_val, is_callable_replace, &replace_count TSRMLS_CC)) != NULL) {
if (!is_filter || replace_count > old_replace_count) { if (!is_filter || replace_count > old_replace_count) {
//??? TODO: reimpplement to avoid double reallocation RETVAL_STR(result);
//??? RETVAL_STRINGL(result, result_len, 0);
RETVAL_STRINGL(result, result_len);
efree(result);
} else { } else {
efree(result); STR_FREE(result);
} }
} }
} }
@ -1791,7 +1775,11 @@ PHPAPI void php_pcre_grep_impl(pcre_cache_entry *pce, zval *input, zval *return
while ((entry = zend_hash_get_current_data(Z_ARRVAL_P(input))) != NULL) { while ((entry = zend_hash_get_current_data(Z_ARRVAL_P(input))) != NULL) {
zval subject; zval subject;
ZVAL_COPY_VALUE(&subject, entry); if (Z_TYPE_P(entry) == IS_REFERENCE) {
entry = Z_REFVAL_P(entry);
}
ZVAL_COPY_VALUE(&subject, entry);
if (Z_TYPE_P(entry) != IS_STRING) { if (Z_TYPE_P(entry) != IS_STRING) {
zval_copy_ctor(&subject); zval_copy_ctor(&subject);

6
ext/pcre/php_pcre.h
View file

@ -33,7 +33,7 @@
#include <locale.h> #include <locale.h>
#endif #endif
PHPAPI char *php_pcre_replace(zend_string *regex, char *subject, int subject_len, zval *replace_val, int is_callable_replace, int *result_len, int limit, int *replace_count TSRMLS_DC); PHPAPI zend_string *php_pcre_replace(zend_string *regex, char *subject, int subject_len, zval *replace_val, int is_callable_replace, int limit, int *replace_count TSRMLS_DC);
PHPAPI pcre* pcre_get_compiled_regex(zend_string *regex, pcre_extra **extra, int *options TSRMLS_DC); PHPAPI pcre* pcre_get_compiled_regex(zend_string *regex, pcre_extra **extra, int *options TSRMLS_DC);
PHPAPI pcre* pcre_get_compiled_regex_ex(zend_string *regex, pcre_extra **extra, int *preg_options, int *coptions TSRMLS_DC); PHPAPI pcre* pcre_get_compiled_regex_ex(zend_string *regex, pcre_extra **extra, int *preg_options, int *coptions TSRMLS_DC);
@ -57,8 +57,8 @@ PHPAPI pcre_cache_entry* pcre_get_compiled_regex_cache(zend_string *regex TSRMLS
PHPAPI void php_pcre_match_impl( pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value, PHPAPI void php_pcre_match_impl( pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value,
zval *subpats, int global, int use_flags, long flags, long start_offset TSRMLS_DC); zval *subpats, int global, int use_flags, long flags, long start_offset TSRMLS_DC);
PHPAPI char *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value, PHPAPI zend_string *php_pcre_replace_impl(pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value,
int is_callable_replace, int *result_len, int limit, int *replace_count TSRMLS_DC); int is_callable_replace, int limit, int *replace_count TSRMLS_DC);
PHPAPI void php_pcre_split_impl( pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value, PHPAPI void php_pcre_split_impl( pcre_cache_entry *pce, char *subject, int subject_len, zval *return_value,
long limit_val, long flags TSRMLS_DC); long limit_val, long flags TSRMLS_DC);

15
ext/spl/spl_iterators.c
View file

@ -1960,9 +1960,10 @@ SPL_METHOD(CallbackFilterIterator, accept)
SPL_METHOD(RegexIterator, accept) SPL_METHOD(RegexIterator, accept)
{ {
spl_dual_it_object *intern; spl_dual_it_object *intern;
char *subject, *result; char *subject;
int subject_len, use_copy, count = 0, result_len; zend_string *result;
zval *subject_ptr, subject_copy, zcount, *replacement, tmp_replacement; int subject_len, use_copy, count = 0;
zval *subject_ptr, subject_copy, zcount, *replacement, tmp_replacement;
if (zend_parse_parameters_none() == FAILURE) { if (zend_parse_parameters_none() == FAILURE) {
return; return;
@ -2033,16 +2034,14 @@ SPL_METHOD(RegexIterator, accept)
convert_to_string(&tmp_replacement); convert_to_string(&tmp_replacement);
replacement = &tmp_replacement; replacement = &tmp_replacement;
} }
result = php_pcre_replace_impl(intern->u.regex.pce, subject, subject_len, replacement, 0, &result_len, -1, &count TSRMLS_CC); result = php_pcre_replace_impl(intern->u.regex.pce, subject, subject_len, replacement, 0, -1, &count TSRMLS_CC);
if (intern->u.regex.flags & REGIT_USE_KEY) { if (intern->u.regex.flags & REGIT_USE_KEY) {
zval_ptr_dtor(&intern->current.key); zval_ptr_dtor(&intern->current.key);
//??? ZVAL_STRINGL(intern->current.key, result, result_len, 0); ZVAL_STR(&intern->current.key, result);
ZVAL_STRINGL(&intern->current.key, result, result_len);
} else { } else {
zval_ptr_dtor(&intern->current.data); zval_ptr_dtor(&intern->current.data);
//??? ZVAL_STRINGL(intern->current.data, result, result_len, 0); ZVAL_STR(&intern->current.data, result);
ZVAL_STRINGL(&intern->current.data, result, result_len);
} }
if (replacement == &tmp_replacement) { if (replacement == &tmp_replacement) {