File 0001-PCRE2.patch of Package renderdoc

From 9e0d3ac10d6630c7ba71fd482c8dbaeaa1ebaf9c Mon Sep 17 00:00:00 2001
From: Julien Schueller <schueller@phimeca.com>
Date: Tue, 4 Jan 2022 13:50:02 +0100
Subject: [PATCH] PCRE2

Closes #2120

(cherry picked from commit 15515f390c5e3316a7faf0cf85d661a297d45a50)
---
 Source/Swig/misc.c          | 41 ++++++++++++++++++++++++-------------
 Source/Swig/naming.c        | 22 ++++++++++++--------
 Tools/cmake/FindPCRE2.cmake | 21 +++++++++++++++++++
 configure.ac                | 19 +++++++++--------
 4 files changed, 72 insertions(+), 31 deletions(-)
 create mode 100644 Tools/cmake/FindPCRE2.cmake

diff --git a/swig-renderdoc-modified-7/Source/Swig/misc.c b/swig-renderdoc-modified-7/Source/Swig/misc.c
index 91f05c0a2288..c63f0a6c0da1 100644
--- a/swig-renderdoc-modified-7/Source/Swig/misc.c
+++ b/swig-renderdoc-modified-7/Source/Swig/misc.c
@@ -1269,7 +1269,8 @@ void Swig_offset_string(String *s, int number) {
 
 
 #ifdef HAVE_PCRE
-#include <pcre.h>
+#define PCRE2_CODE_UNIT_WIDTH 8
+#include <pcre2.h>
 
 static int split_regex_pattern_subst(String *s, String **pattern, String **subst, const char **input)
 {
@@ -1331,7 +1332,7 @@ static void copy_with_maybe_case_conversion(String *dst, const char *src, int le
   }
 }
 
-String *replace_captures(int num_captures, const char *input, String *subst, int captures[], String *pattern, String *s)
+String *replace_captures(int num_captures, const char *input, String *subst, size_t captures[], String *pattern, String *s)
 {
   int convertCase = 0, convertNextOnly = 0;
   String *result = NewStringEmpty();
@@ -1353,7 +1354,7 @@ String *replace_captures(int num_captures, const char *input, String *subst, int
     } else if (isdigit((unsigned char)*p)) {
       int group = *p++ - '0';
       if (group < num_captures) {
-	int l = captures[group*2], r = captures[group*2 + 1];
+	int l = (int)captures[group*2], r = (int)captures[group*2 + 1];
 	if (l != -1) {
 	  copy_with_maybe_case_conversion(result, input + l, r - l, &convertCase, convertNextOnly);
 	}
@@ -1405,26 +1406,31 @@ String *Swig_string_regex(String *s) {
   const int pcre_options = 0;
 
   String *res = 0;
-  pcre *compiled_pat = 0;
-  const char *pcre_error, *input;
-  int pcre_errorpos;
+  pcre2_code *compiled_pat = 0;
+  const char *input;
+  PCRE2_UCHAR pcre_error[256];
+  int pcre_errornum;
+  size_t pcre_errorpos;
   String *pattern = 0, *subst = 0;
-  int captures[30];
-
+  size_t *captures = 0;
+  pcre2_match_data *match_data = 0;
   if (split_regex_pattern_subst(s, &pattern, &subst, &input)) {
     int rc;
 
-    compiled_pat = pcre_compile(
-          Char(pattern), pcre_options, &pcre_error, &pcre_errorpos, NULL);
+    compiled_pat = pcre2_compile(
+          (PCRE2_SPTR8)Char(pattern), PCRE2_ZERO_TERMINATED, pcre_options, &pcre_errornum, &pcre_errorpos, NULL);
     if (!compiled_pat) {
+      pcre2_get_error_message (pcre_errornum, pcre_error, sizeof pcre_error);
       Swig_error("SWIG", Getline(s), "PCRE compilation failed: '%s' in '%s':%i.\n",
           pcre_error, Char(pattern), pcre_errorpos);
       exit(1);
     }
-    rc = pcre_exec(compiled_pat, NULL, input, (int)strlen(input), 0, 0, captures, 30);
+    match_data = pcre2_match_data_create_from_pattern (compiled_pat, NULL);
+    rc = pcre2_match(compiled_pat, (PCRE2_SPTR8)input, PCRE2_ZERO_TERMINATED, 0, 0, match_data, NULL);
+    captures = pcre2_get_ovector_pointer (match_data);
     if (rc >= 0) {
       res = replace_captures(rc, input, subst, captures, pattern, s);
-    } else if (rc != PCRE_ERROR_NOMATCH) {
+    } else if (rc != PCRE2_ERROR_NOMATCH) {
       Swig_error("SWIG", Getline(s), "PCRE execution failed: error %d while matching \"%s\" using \"%s\".\n",
 	rc, Char(pattern), input);
       exit(1);
@@ -1433,12 +1439,19 @@ String *Swig_string_regex(String *s) {
 
   DohDelete(pattern);
   DohDelete(subst);
-  pcre_free(compiled_pat);
+  pcre2_code_free(compiled_pat);
+  pcre2_match_data_free(match_data);
   return res ? res : NewStringEmpty();
 }
 
 String *Swig_pcre_version(void) {
-  return NewStringf("PCRE Version: %s", pcre_version());
+  int len = pcre2_config(PCRE2_CONFIG_VERSION, NULL);
+  char *buf = malloc(len);
+  String *result;
+  pcre2_config(PCRE2_CONFIG_VERSION, buf);
+  result = NewStringf("PCRE Version: %s", buf);
+  free(buf);
+  return result;
 }
 
 #else
diff --git a/swig-renderdoc-modified-7/Source/Swig/naming.c b/swig-renderdoc-modified-7/Source/Swig/naming.c
index ce1dbe8062c5..7b5c93e29662 100644
--- a/swig-renderdoc-modified-7/Source/Swig/naming.c
+++ b/swig-renderdoc-modified-7/Source/Swig/naming.c
@@ -1092,26 +1092,32 @@ static DOH *get_lattr(Node *n, List *lattr) {
 }
 
 #ifdef HAVE_PCRE
-#include <pcre.h>
+#define PCRE2_CODE_UNIT_WIDTH 8
+#include <pcre2.h>
 
 static int name_regexmatch_value(Node *n, String *pattern, String *s) {
-  pcre *compiled_pat;
-  const char *err;
-  int errpos;
+  pcre2_code *compiled_pat;
+  PCRE2_UCHAR err[256];
+  int errornum;
+  size_t errpos;
   int rc;
 
-  compiled_pat = pcre_compile(Char(pattern), 0, &err, &errpos, NULL);
+  compiled_pat = pcre2_compile((PCRE2_SPTR8)Char(pattern), PCRE2_ZERO_TERMINATED, 0, &errornum, &errpos, NULL);
   if (!compiled_pat) {
+    pcre2_get_error_message (errornum, err, sizeof err);
     Swig_error("SWIG", Getline(n),
                "Invalid regex \"%s\": compilation failed at %d: %s\n",
                Char(pattern), errpos, err);
     exit(1);
   }
 
-  rc = pcre_exec(compiled_pat, NULL, Char(s), Len(s), 0, 0, NULL, 0);
-  pcre_free(compiled_pat);
+  pcre2_match_data *match_data = 0;
+  match_data = pcre2_match_data_create_from_pattern (compiled_pat, NULL);
+  rc = pcre2_match(compiled_pat, (PCRE2_SPTR8)Char(s), PCRE2_ZERO_TERMINATED, 0, 0, match_data, 0);
+  pcre2_code_free(compiled_pat);
+  pcre2_match_data_free(match_data);
 
-  if (rc == PCRE_ERROR_NOMATCH)
+  if (rc == PCRE2_ERROR_NOMATCH)
     return 0;
 
   if (rc < 0 ) {
diff --git a/swig-renderdoc-modified-7/Tools/cmake/FindPCRE2.cmake b/swig-renderdoc-modified-7/Tools/cmake/FindPCRE2.cmake
new file mode 100644
index 000000000000..08c21634745d
--- /dev/null
+++ b/swig-renderdoc-modified-7/Tools/cmake/FindPCRE2.cmake
@@ -0,0 +1,21 @@
+# - Find PCRE2
+# Perl Compatible Regular Expressions
+# https://www.pcre.org/
+
+# The following variables are set:
+# PCRE2_FOUND - System has the PCRE library
+# PCRE2_LIBRARIES - The PCRE library file
+# PCRE2_INCLUDE_DIRS - The folder with the PCRE headers
+
+find_library(PCRE2_LIBRARY NAMES pcre2 pcre2-8)
+find_path(PCRE2_INCLUDE_DIR pcre2.h)
+
+set (PCRE2_LIBRARIES ${PCRE2_LIBRARY})
+set (PCRE2_INCLUDE_DIRS ${PCRE2_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(PCRE2 DEFAULT_MSG PCRE2_LIBRARIES PCRE2_INCLUDE_DIRS)
+
+mark_as_advanced (
+  PCRE2_LIBRARY
+  PCRE2_INCLUDE_DIR)
diff --git a/swig-renderdoc-modified-7/configure.ac b/swig-renderdoc-modified-7/configure.ac
index 4e8abde5fd7e..3e6e05c683b1 100644
--- a/swig-renderdoc-modified-7/configure.ac
+++ b/swig-renderdoc-modified-7/configure.ac
@@ -67,24 +67,24 @@ dnl To make configuring easier, check for a locally built PCRE using the Tools/p
 if test x"${with_pcre}" = xyes ; then
   AC_MSG_CHECKING([whether to use local PCRE])
   local_pcre_config=no
-  if test -z $PCRE_CONFIG; then
-    if test -f `pwd`/pcre/pcre-swig-install/bin/pcre-config; then
-      PCRE_CONFIG=`pwd`/pcre/pcre-swig-install/bin/pcre-config
-      local_pcre_config=$PCRE_CONFIG
+  if test -z $PCRE2_CONFIG; then
+    if test -f `pwd`/pcre/pcre-swig-install/bin/pcre2-config; then
+      PCRE2_CONFIG=`pwd`/pcre/pcre-swig-install/bin/pcre2-config
+      local_pcre_config=$PCRE2_CONFIG
     fi
   fi
   AC_MSG_RESULT([$local_pcre_config])
 fi
 AS_IF([test "x$with_pcre" != xno],
-  [AX_PATH_GENERIC([pcre],
+  [AX_PATH_GENERIC([pcre2],
     [], dnl Minimal version of PCRE we need -- accept any
     [], dnl custom sed script for version parsing is not needed
     [AC_DEFINE([HAVE_PCRE], [1], [Define if you have PCRE library])
-     LIBS="$LIBS $PCRE_LIBS"
-     CPPFLAGS="$CPPFLAGS $PCRE_CFLAGS"
+     LIBS="$LIBS $PCRE2_LIBS"
+     CPPFLAGS="$CPPFLAGS $PCRE2_CFLAGS"
     ],
     [AC_MSG_FAILURE([
-        Cannot find pcre-config script from PCRE (Perl Compatible Regular Expressions)
+        Cannot find pcre2-config script from PCRE (Perl Compatible Regular Expressions)
         library package. This dependency is needed for configure to complete,
         Either:
         - Install the PCRE developer package on your system (preferred approach).
@@ -95,7 +95,8 @@ AS_IF([test "x$with_pcre" != xno],
           (quite easy and does not require privileges to install PCRE on your system)
         - Use configure --without-pcre to disable regular expressions support in SWIG
           (not recommended).])
-    ])
+    ],
+    [],[],[--libs8])
   ])
 
 
-- 
2.49.0

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