/* Extended regular expression matching and search library.
- Copyright (C) 2002-2016 Free Software Foundation, Inc.
+ Copyright (C) 2002-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
#include <stdint.h>
static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
- int n) internal_function;
-static void match_ctx_clean (re_match_context_t *mctx) internal_function;
-static void match_ctx_free (re_match_context_t *cache) internal_function;
+ int n);
+static void match_ctx_clean (re_match_context_t *mctx);
+static void match_ctx_free (re_match_context_t *cache);
static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
- int str_idx, int from, int to)
- internal_function;
-static int search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
- internal_function;
+ int str_idx, int from, int to);
+static int search_cur_bkref_entry (const re_match_context_t *mctx,
+ int str_idx);
static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
- int str_idx) internal_function;
+ int str_idx);
static re_sub_match_last_t * match_ctx_add_sublast (re_sub_match_top_t *subtop,
- int node, int str_idx)
- internal_function;
+ int node, int str_idx);
static void sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
re_dfastate_t **limited_sts, int last_node,
- int last_str_idx)
- internal_function;
+ int last_str_idx);
static reg_errcode_t re_search_internal (const regex_t *preg,
const char *string, int length,
int start, int range, int stop,
size_t nmatch, regmatch_t pmatch[],
- int eflags) internal_function;
+ int eflags);
static int re_search_2_stub (struct re_pattern_buffer *bufp,
const char *string1, int length1,
const char *string2, int length2,
int start, int range, struct re_registers *regs,
- int stop, int ret_len) internal_function;
+ int stop, int ret_len);
static int re_search_stub (struct re_pattern_buffer *bufp,
const char *string, int length, int start,
int range, int stop, struct re_registers *regs,
- int ret_len) internal_function;
+ int ret_len);
static unsigned re_copy_regs (struct re_registers *regs, regmatch_t *pmatch,
- int nregs, int regs_allocated) internal_function;
-static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx)
- internal_function;
+ int nregs, int regs_allocated);
+static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx);
static int check_matching (re_match_context_t *mctx, int fl_longest_match,
- int *p_match_first) internal_function;
+ int *p_match_first);
static int check_halt_state_context (const re_match_context_t *mctx,
- const re_dfastate_t *state, int idx)
- internal_function;
+ const re_dfastate_t *state, int idx);
static void update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
regmatch_t *prev_idx_match, int cur_node,
- int cur_idx, int nmatch) internal_function;
+ int cur_idx, int nmatch);
static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
int str_idx, int dest_node, int nregs,
regmatch_t *regs,
- re_node_set *eps_via_nodes)
- internal_function;
+ re_node_set *eps_via_nodes);
static reg_errcode_t set_regs (const regex_t *preg,
const re_match_context_t *mctx,
size_t nmatch, regmatch_t *pmatch,
- int fl_backtrack) internal_function;
-static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs)
- internal_function;
+ int fl_backtrack);
+static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs);
#ifdef RE_ENABLE_I18N
static int sift_states_iter_mb (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int node_idx, int str_idx, int max_str_idx)
- internal_function;
+ int node_idx, int str_idx, int max_str_idx);
#endif /* RE_ENABLE_I18N */
static reg_errcode_t sift_states_backward (const re_match_context_t *mctx,
- re_sift_context_t *sctx)
- internal_function;
+ re_sift_context_t *sctx);
static reg_errcode_t build_sifted_states (const re_match_context_t *mctx,
re_sift_context_t *sctx, int str_idx,
- re_node_set *cur_dest)
- internal_function;
+ re_node_set *cur_dest);
static reg_errcode_t update_cur_sifted_state (const re_match_context_t *mctx,
re_sift_context_t *sctx,
int str_idx,
- re_node_set *dest_nodes)
- internal_function;
+ re_node_set *dest_nodes);
static reg_errcode_t add_epsilon_src_nodes (const re_dfa_t *dfa,
re_node_set *dest_nodes,
- const re_node_set *candidates)
- internal_function;
+ const re_node_set *candidates);
static int check_dst_limits (const re_match_context_t *mctx,
re_node_set *limits,
int dst_node, int dst_idx, int src_node,
- int src_idx) internal_function;
+ int src_idx);
static int check_dst_limits_calc_pos_1 (const re_match_context_t *mctx,
int boundaries, int subexp_idx,
- int from_node, int bkref_idx)
- internal_function;
+ int from_node, int bkref_idx);
static int check_dst_limits_calc_pos (const re_match_context_t *mctx,
int limit, int subexp_idx,
int node, int str_idx,
- int bkref_idx) internal_function;
+ int bkref_idx);
static reg_errcode_t check_subexp_limits (const re_dfa_t *dfa,
re_node_set *dest_nodes,
const re_node_set *candidates,
re_node_set *limits,
struct re_backref_cache_entry *bkref_ents,
- int str_idx) internal_function;
+ int str_idx);
static reg_errcode_t sift_states_bkref (const re_match_context_t *mctx,
re_sift_context_t *sctx,
- int str_idx, const re_node_set *candidates)
- internal_function;
+ int str_idx,
+ const re_node_set *candidates);
static reg_errcode_t merge_state_array (const re_dfa_t *dfa,
re_dfastate_t **dst,
- re_dfastate_t **src, int num)
- internal_function;
+ re_dfastate_t **src, int num);
static re_dfastate_t *find_recover_state (reg_errcode_t *err,
- re_match_context_t *mctx) internal_function;
+ re_match_context_t *mctx);
static re_dfastate_t *transit_state (reg_errcode_t *err,
re_match_context_t *mctx,
- re_dfastate_t *state) internal_function;
+ re_dfastate_t *state);
static re_dfastate_t *merge_state_with_log (reg_errcode_t *err,
re_match_context_t *mctx,
- re_dfastate_t *next_state)
- internal_function;
+ re_dfastate_t *next_state);
static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
re_node_set *cur_nodes,
- int str_idx) internal_function;
+ int str_idx);
#if 0
static re_dfastate_t *transit_state_sb (reg_errcode_t *err,
re_match_context_t *mctx,
- re_dfastate_t *pstate)
- internal_function;
+ re_dfastate_t *pstate);
#endif
#ifdef RE_ENABLE_I18N
static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
- re_dfastate_t *pstate)
- internal_function;
+ re_dfastate_t *pstate);
#endif /* RE_ENABLE_I18N */
static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
- const re_node_set *nodes)
- internal_function;
+ const re_node_set *nodes);
static reg_errcode_t get_subexp (re_match_context_t *mctx,
- int bkref_node, int bkref_str_idx)
- internal_function;
+ int bkref_node, int bkref_str_idx);
static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
const re_sub_match_top_t *sub_top,
re_sub_match_last_t *sub_last,
- int bkref_node, int bkref_str)
- internal_function;
+ int bkref_node, int bkref_str);
static int find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
- int subexp_idx, int type) internal_function;
+ int subexp_idx, int type);
static reg_errcode_t check_arrival (re_match_context_t *mctx,
state_array_t *path, int top_node,
int top_str, int last_node, int last_str,
- int type) internal_function;
+ int type);
static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
int str_idx,
re_node_set *cur_nodes,
- re_node_set *next_nodes)
- internal_function;
+ re_node_set *next_nodes);
static reg_errcode_t check_arrival_expand_ecl (const re_dfa_t *dfa,
re_node_set *cur_nodes,
- int ex_subexp, int type)
- internal_function;
+ int ex_subexp, int type);
static reg_errcode_t check_arrival_expand_ecl_sub (const re_dfa_t *dfa,
re_node_set *dst_nodes,
int target, int ex_subexp,
- int type) internal_function;
+ int type);
static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
re_node_set *cur_nodes, int cur_str,
- int subexp_num, int type)
- internal_function;
-static int build_trtable (const re_dfa_t *dfa,
- re_dfastate_t *state) internal_function;
+ int subexp_num, int type);
+static int build_trtable (const re_dfa_t *dfa, re_dfastate_t *state);
#ifdef RE_ENABLE_I18N
static int check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
- const re_string_t *input, int idx)
- internal_function;
+ const re_string_t *input, int idx);
# ifdef _LIBC
static unsigned int find_collation_sequence_value (const unsigned char *mbs,
- size_t name_len)
- internal_function;
+ size_t name_len);
# endif /* _LIBC */
#endif /* RE_ENABLE_I18N */
static int group_nodes_into_DFAstates (const re_dfa_t *dfa,
const re_dfastate_t *state,
re_node_set *states_node,
- bitset_t *states_ch) internal_function;
+ bitset_t *states_ch);
static int check_node_accept (const re_match_context_t *mctx,
- const re_token_t *node, int idx)
- internal_function;
-static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len)
- internal_function;
+ const re_token_t *node, int idx);
+static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len);
\f
/* Entry point for POSIX code. */
}
#ifdef _LIBC
+libc_hidden_def (__regexec)
+
# include <shlib-compat.h>
versioned_symbol (libc, __regexec, regexec, GLIBC_2_3_4);
concerned.
If REGS is not NULL, and BUFP->no_sub is not set, the offsets of the match
- and all groups is stroed in REGS. (For the "_2" variants, the offsets are
+ and all groups is stored in REGS. (For the "_2" variants, the offsets are
computed relative to the concatenation, not relative to the individual
strings.)
#endif
static int
-internal_function
re_search_2_stub (struct re_pattern_buffer *bufp, const char *string1,
int length1, const char *string2, int length2, int start,
int range, struct re_registers *regs,
otherwise the position of the match is returned. */
static int
-internal_function
re_search_stub (struct re_pattern_buffer *bufp, const char *string, int length,
int start, int range, int stop, struct re_registers *regs,
int ret_len)
}
static unsigned
-internal_function
re_copy_regs (struct re_registers *regs, regmatch_t *pmatch, int nregs,
int regs_allocated)
{
/* Searches for a compiled pattern PREG in the string STRING, whose
length is LENGTH. NMATCH, PMATCH, and EFLAGS have the same
- mingings with regexec. START, and RANGE have the same meanings
+ meaning as with regexec. START, and RANGE have the same meanings
with re_search.
Return REG_NOERROR if we find a match, and REG_NOMATCH if not,
otherwise return the error code.
(START + RANGE >= 0 && START + RANGE <= LENGTH) */
static reg_errcode_t
-__attribute_warn_unused_result__ internal_function
+__attribute_warn_unused_result__
re_search_internal (const regex_t *preg, const char *string, int length,
int start, int range, int stop, size_t nmatch,
regmatch_t pmatch[], int eflags)
goto free_return;
}
- /* At last, add the offset to the each registers, since we slided
+ /* At last, add the offset to each register, since we slid
the buffers so that we could assume that the matching starts
from 0. */
for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
}
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
prune_impossible_nodes (re_match_context_t *mctx)
{
const re_dfa_t *const dfa = mctx->dfa;
since initial states may have constraints like "\<", "^", etc.. */
static inline re_dfastate_t *
-__attribute ((always_inline)) internal_function
+__attribute ((always_inline))
acquire_init_state_context (reg_errcode_t *err, const re_match_context_t *mctx,
int idx)
{
index of the buffer. */
static int
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
check_matching (re_match_context_t *mctx, int fl_longest_match,
int *p_match_first)
{
/* Check NODE match the current context. */
static int
-internal_function
check_halt_node_context (const re_dfa_t *dfa, int node, unsigned int context)
{
re_token_type_t type = dfa->nodes[node].type;
match the context, return the node. */
static int
-internal_function
check_halt_state_context (const re_match_context_t *mctx,
const re_dfastate_t *state, int idx)
{
of errors. */
static int
-internal_function
proceed_next_node (const re_match_context_t *mctx, int nregs, regmatch_t *regs,
int *pidx, int node, re_node_set *eps_via_nodes,
struct re_fail_stack_t *fs)
}
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
int nregs, regmatch_t *regs, re_node_set *eps_via_nodes)
{
}
static int
-internal_function
pop_fail_stack (struct re_fail_stack_t *fs, int *pidx, int nregs,
regmatch_t *regs, re_node_set *eps_via_nodes)
{
pmatch[i].rm_so == pmatch[i].rm_eo == -1 for 0 < i < nmatch. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
set_regs (const regex_t *preg, const re_match_context_t *mctx, size_t nmatch,
regmatch_t *pmatch, int fl_backtrack)
{
}
static reg_errcode_t
-internal_function
free_fail_stack_return (struct re_fail_stack_t *fs)
{
if (fs)
}
static void
-internal_function
update_regs (const re_dfa_t *dfa, regmatch_t *pmatch,
regmatch_t *prev_idx_match, int cur_node, int cur_idx, int nmatch)
{
((state) != NULL && re_node_set_contains (&(state)->nodes, node))
static reg_errcode_t
-internal_function
sift_states_backward (const re_match_context_t *mctx, re_sift_context_t *sctx)
{
reg_errcode_t err;
}
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
build_sifted_states (const re_match_context_t *mctx, re_sift_context_t *sctx,
int str_idx, re_node_set *cur_dest)
{
/* Helper functions. */
static reg_errcode_t
-internal_function
clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
{
int top = mctx->state_log_top;
}
static reg_errcode_t
-internal_function
merge_state_array (const re_dfa_t *dfa, re_dfastate_t **dst,
re_dfastate_t **src, int num)
{
}
static reg_errcode_t
-internal_function
update_cur_sifted_state (const re_match_context_t *mctx,
re_sift_context_t *sctx, int str_idx,
re_node_set *dest_nodes)
}
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
add_epsilon_src_nodes (const re_dfa_t *dfa, re_node_set *dest_nodes,
const re_node_set *candidates)
{
}
static reg_errcode_t
-internal_function
sub_epsilon_src_nodes (const re_dfa_t *dfa, int node, re_node_set *dest_nodes,
const re_node_set *candidates)
{
}
static int
-internal_function
check_dst_limits (const re_match_context_t *mctx, re_node_set *limits,
int dst_node, int dst_idx, int src_node, int src_idx)
{
}
static int
-internal_function
check_dst_limits_calc_pos_1 (const re_match_context_t *mctx, int boundaries,
int subexp_idx, int from_node, int bkref_idx)
{
}
static int
-internal_function
check_dst_limits_calc_pos (const re_match_context_t *mctx, int limit,
int subexp_idx, int from_node, int str_idx,
int bkref_idx)
which are against limitations from DEST_NODES. */
static reg_errcode_t
-internal_function
check_subexp_limits (const re_dfa_t *dfa, re_node_set *dest_nodes,
const re_node_set *candidates, re_node_set *limits,
struct re_backref_cache_entry *bkref_ents, int str_idx)
}
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
sift_states_bkref (const re_match_context_t *mctx, re_sift_context_t *sctx,
int str_idx, const re_node_set *candidates)
{
#ifdef RE_ENABLE_I18N
static int
-internal_function
sift_states_iter_mb (const re_match_context_t *mctx, re_sift_context_t *sctx,
int node_idx, int str_idx, int max_str_idx)
{
update the destination of STATE_LOG. */
static re_dfastate_t *
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
transit_state (reg_errcode_t *err, re_match_context_t *mctx,
re_dfastate_t *state)
{
/* Update the state_log if we need */
re_dfastate_t *
-internal_function
merge_state_with_log (reg_errcode_t *err, re_match_context_t *mctx,
re_dfastate_t *next_state)
{
multi-byte match, then look in the log for a state
from which to restart matching. */
re_dfastate_t *
-internal_function
find_recover_state (reg_errcode_t *err, re_match_context_t *mctx)
{
re_dfastate_t *cur_state;
/* From the node set CUR_NODES, pick up the nodes whose types are
OP_OPEN_SUBEXP and which have corresponding back references in the regular
expression. And register them to use them later for evaluating the
- correspoding back references. */
+ corresponding back references. */
static reg_errcode_t
-internal_function
check_subexp_matching_top (re_match_context_t *mctx, re_node_set *cur_nodes,
int str_idx)
{
#ifdef RE_ENABLE_I18N
static reg_errcode_t
-internal_function
transit_state_mb (re_match_context_t *mctx, re_dfastate_t *pstate)
{
const re_dfa_t *const dfa = mctx->dfa;
#endif /* RE_ENABLE_I18N */
static reg_errcode_t
-internal_function
transit_state_bkref (re_match_context_t *mctx, const re_node_set *nodes)
{
const re_dfa_t *const dfa = mctx->dfa;
delay these checking for prune_impossible_nodes(). */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
{
const re_dfa_t *const dfa = mctx->dfa;
and SUB_LAST. */
static reg_errcode_t
-internal_function
get_subexp_sub (re_match_context_t *mctx, const re_sub_match_top_t *sub_top,
re_sub_match_last_t *sub_last, int bkref_node, int bkref_str)
{
E.g. RE: (a){2} */
static int
-internal_function
find_subexp_node (const re_dfa_t *dfa, const re_node_set *nodes,
int subexp_idx, int type)
{
Return REG_NOERROR if it can arrive, or REG_NOMATCH otherwise. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
check_arrival (re_match_context_t *mctx, state_array_t *path, int top_node,
int top_str, int last_node, int last_str, int type)
{
Can't we unify them? */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
re_node_set *cur_nodes, re_node_set *next_nodes)
{
const re_dfa_t *const dfa = mctx->dfa;
int result;
int cur_idx;
+#ifdef RE_ENABLE_I18N
reg_errcode_t err = REG_NOERROR;
+#endif
re_node_set union_set;
re_node_set_init_empty (&union_set);
for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
*/
static reg_errcode_t
-internal_function
check_arrival_expand_ecl (const re_dfa_t *dfa, re_node_set *cur_nodes,
int ex_subexp, int type)
{
problematic append it to DST_NODES. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
check_arrival_expand_ecl_sub (const re_dfa_t *dfa, re_node_set *dst_nodes,
int target, int ex_subexp, int type)
{
in MCTX->BKREF_ENTS. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
expand_bkref_cache (re_match_context_t *mctx, re_node_set *cur_nodes,
int cur_str, int subexp_num, int type)
{
Return 1 if succeeded, otherwise return NULL. */
static int
-internal_function
build_trtable (const re_dfa_t *dfa, re_dfastate_t *state)
{
reg_errcode_t err;
to DEST_CH[i]. This function return the number of destinations. */
static int
-internal_function
group_nodes_into_DFAstates (const re_dfa_t *dfa, const re_dfastate_t *state,
re_node_set *dests_node, bitset_t *dests_ch)
{
# endif
static int
-internal_function
check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
const re_string_t *input, int str_idx)
{
# ifdef _LIBC
static unsigned int
-internal_function
find_collation_sequence_value (const unsigned char *mbs, size_t mbs_len)
{
uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
byte of the INPUT. */
static int
-internal_function
check_node_accept (const re_match_context_t *mctx, const re_token_t *node,
int idx)
{
/* Extend the buffers, if the buffers have run out. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
extend_buffers (re_match_context_t *mctx, int min_len)
{
reg_errcode_t ret;
/* Initialize MCTX. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
match_ctx_init (re_match_context_t *mctx, int eflags, int n)
{
mctx->eflags = eflags;
of the input, or changes the input string. */
static void
-internal_function
match_ctx_clean (re_match_context_t *mctx)
{
int st_idx;
/* Free all the memory associated with MCTX. */
static void
-internal_function
match_ctx_free (re_match_context_t *mctx)
{
/* First, free all the memory associated with MCTX->SUB_TOPS. */
*/
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx, int from,
int to)
{
found. Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX. */
static int
-internal_function
search_cur_bkref_entry (const re_match_context_t *mctx, int str_idx)
{
int left, right, mid, last;
at STR_IDX. */
static reg_errcode_t
-internal_function __attribute_warn_unused_result__
+__attribute_warn_unused_result__
match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
{
#ifdef DEBUG
at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP. */
static re_sub_match_last_t *
-internal_function
match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
{
re_sub_match_last_t *new_entry;
}
static void
-internal_function
sift_ctx_init (re_sift_context_t *sctx, re_dfastate_t **sifted_sts,
re_dfastate_t **limited_sts, int last_node, int last_str_idx)
{
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