/************************************************* * 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) 2016-2022 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" #define PTR_STACK_SIZE … #define SUBSTITUTE_OPTIONS … /************************************************* * Find end of substitute text * *************************************************/ /* In extended mode, we recognize ${name:+set text:unset text} and similar constructions. This requires the identification of unescaped : and } characters. This function scans for such. It must deal with nested ${ constructions. The pointer to the text is updated, either to the required end character, or to where an error was detected. Arguments: code points to the compiled expression (for options) ptrptr points to the pointer to the start of the text (updated) ptrend end of the whole string last TRUE if the last expected string (only } recognized) Returns: 0 on success negative error code on failure */ static int find_text_end(const pcre2_code *code, PCRE2_SPTR *ptrptr, PCRE2_SPTR ptrend, BOOL last) { … } /************************************************* * Match and substitute * *************************************************/ /* This function applies a compiled re to a subject string and creates a new string with substitutions. The first 7 arguments are the same as for pcre2_match(). Either string length may be PCRE2_ZERO_TERMINATED. Arguments: code points to the compiled expression subject points to the subject string length length of subject string (may contain binary zeros) start_offset where to start in the subject string options option bits match_data points to a match_data block, or is NULL context points a PCRE2 context replacement points to the replacement string rlength length of replacement string buffer where to put the substituted string blength points to length of buffer; updated to length of string Returns: >= 0 number of substitutions made < 0 an error code PCRE2_ERROR_BADREPLACEMENT means invalid use of $ */ /* This macro checks for space in the buffer before copying into it. On overflow, either give an error immediately, or keep on, accumulating the length. */ #define CHECKMEMCPY(from,length) … /* Here's the function */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_substitute(const pcre2_code *code, PCRE2_SPTR subject, PCRE2_SIZE length, PCRE2_SIZE start_offset, uint32_t options, pcre2_match_data *match_data, pcre2_match_context *mcontext, PCRE2_SPTR replacement, PCRE2_SIZE rlength, PCRE2_UCHAR *buffer, PCRE2_SIZE *blength) { … } /* End of pcre2_substitute.c */
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