/************************************************* * Perl-Compatible Regular Expressions * *************************************************/ /* PCRE is a library of functions to support regular expressions whose syntax and semantics are as close as possible to those of the Perl 5 language. Written by Philip Hazel Original API code Copyright (c) 1997-2012 University of Cambridge New API code Copyright (c) 2016-2023 University of Cambridge ----------------------------------------------------------------------------- Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the University of Cambridge nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ----------------------------------------------------------------------------- */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "pcre2_internal.h" /************************************************* * Default malloc/free functions * *************************************************/ /* Ignore the "user data" argument in each case. */ static void *default_malloc(size_t size, void *data) { … } static void default_free(void *block, void *data) { … } /************************************************* * Get a block and save memory control * *************************************************/ /* This internal function is called to get a block of memory in which the memory control data is to be stored at the start for future use. Arguments: size amount of memory required memctl pointer to a memctl block or NULL Returns: pointer to memory or NULL on failure */ extern void * PRIV(memctl_malloc)(size_t size, pcre2_memctl *memctl) { … } /************************************************* * Create and initialize contexts * *************************************************/ /* Initializing for compile and match contexts is done in separate, private functions so that these can be called from functions such as pcre2_compile() when an external context is not supplied. The initializing functions have an option to set up default memory management. */ PCRE2_EXP_DEFN pcre2_general_context * PCRE2_CALL_CONVENTION pcre2_general_context_create(void *(*private_malloc)(size_t, void *), void (*private_free)(void *, void *), void *memory_data) { … } /* A default compile context is set up to save having to initialize at run time when no context is supplied to the compile function. */ const pcre2_compile_context PRIV(default_compile_context) = …; /* The create function copies the default into the new memory, but must override the default memory handling functions if a gcontext was provided. */ PCRE2_EXP_DEFN pcre2_compile_context * PCRE2_CALL_CONVENTION pcre2_compile_context_create(pcre2_general_context *gcontext) { … } /* A default match context is set up to save having to initialize at run time when no context is supplied to a match function. */ const pcre2_match_context PRIV(default_match_context) = …; /* The create function copies the default into the new memory, but must override the default memory handling functions if a gcontext was provided. */ PCRE2_EXP_DEFN pcre2_match_context * PCRE2_CALL_CONVENTION pcre2_match_context_create(pcre2_general_context *gcontext) { … } /* A default convert context is set up to save having to initialize at run time when no context is supplied to the convert function. */ const pcre2_convert_context PRIV(default_convert_context) = …; /* The create function copies the default into the new memory, but must override the default memory handling functions if a gcontext was provided. */ PCRE2_EXP_DEFN pcre2_convert_context * PCRE2_CALL_CONVENTION pcre2_convert_context_create(pcre2_general_context *gcontext) { … } /************************************************* * Context copy functions * *************************************************/ PCRE2_EXP_DEFN pcre2_general_context * PCRE2_CALL_CONVENTION pcre2_general_context_copy(pcre2_general_context *gcontext) { … } PCRE2_EXP_DEFN pcre2_compile_context * PCRE2_CALL_CONVENTION pcre2_compile_context_copy(pcre2_compile_context *ccontext) { … } PCRE2_EXP_DEFN pcre2_match_context * PCRE2_CALL_CONVENTION pcre2_match_context_copy(pcre2_match_context *mcontext) { … } PCRE2_EXP_DEFN pcre2_convert_context * PCRE2_CALL_CONVENTION pcre2_convert_context_copy(pcre2_convert_context *ccontext) { … } /************************************************* * Context free functions * *************************************************/ PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION pcre2_general_context_free(pcre2_general_context *gcontext) { … } PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION pcre2_compile_context_free(pcre2_compile_context *ccontext) { … } PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION pcre2_match_context_free(pcre2_match_context *mcontext) { … } PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION pcre2_convert_context_free(pcre2_convert_context *ccontext) { … } /************************************************* * Set values in contexts * *************************************************/ /* All these functions return 0 for success or PCRE2_ERROR_BADDATA if invalid data is given. Only some of the functions are able to test the validity of the data. */ /* ------------ Compile context ------------ */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_character_tables(pcre2_compile_context *ccontext, const uint8_t *tables) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_bsr(pcre2_compile_context *ccontext, uint32_t value) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_max_pattern_length(pcre2_compile_context *ccontext, PCRE2_SIZE length) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_newline(pcre2_compile_context *ccontext, uint32_t newline) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_max_varlookbehind(pcre2_compile_context *ccontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_parens_nest_limit(pcre2_compile_context *ccontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_compile_extra_options(pcre2_compile_context *ccontext, uint32_t options) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_compile_recursion_guard(pcre2_compile_context *ccontext, int (*guard)(uint32_t, void *), void *user_data) { … } /* ------------ Match context ------------ */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_callout(pcre2_match_context *mcontext, int (*callout)(pcre2_callout_block *, void *), void *callout_data) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_substitute_callout(pcre2_match_context *mcontext, int (*substitute_callout)(pcre2_substitute_callout_block *, void *), void *substitute_callout_data) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_heap_limit(pcre2_match_context *mcontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_match_limit(pcre2_match_context *mcontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_depth_limit(pcre2_match_context *mcontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_offset_limit(pcre2_match_context *mcontext, PCRE2_SIZE limit) { … } /* These functions became obsolete at release 10.30. The first is kept as a synonym for backwards compatibility. The second now does nothing. Exclude both from coverage reports. */ /* LCOV_EXCL_START */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_recursion_limit(pcre2_match_context *mcontext, uint32_t limit) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_recursion_memory_management(pcre2_match_context *mcontext, void *(*mymalloc)(size_t, void *), void (*myfree)(void *, void *), void *mydata) { … } /* LCOV_EXCL_STOP */ /* ------------ Convert context ------------ */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_glob_separator(pcre2_convert_context *ccontext, uint32_t separator) { … } PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_set_glob_escape(pcre2_convert_context *ccontext, uint32_t escape) { … } /* End of pcre2_context.c */
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