[sql] Rewrite sqlite patching "system".

third_party/sqlite/mac_time_machine.patch

-Index: src/sqliteInt.h
-===================================================================
---- src/sqliteInt.h     (revision 87306)
-+++ src/sqliteInt.h     (working copy)
-@@ -2522,6 +2522,16 @@
- #endif
- 
- /*
-+** The CoreServices.h and CoreFoundation.h headers are needed for excluding a
-+** -journal file from Time Machine backups when its associated database has
-+** previously been excluded by the client code.
-+*/
-+#if defined(__APPLE__)
-+#include <CoreServices/CoreServices.h>
-+#include <CoreFoundation/CoreFoundation.h>
-+#endif
-+
-+/*
- ** The following macros mimic the standard library functions toupper(),
- ** isspace(), isalnum(), isdigit() and isxdigit(), respectively. The
- ** sqlite versions only work for ASCII characters, regardless of locale.
-Index: src/pager.c
-===================================================================
---- src/pager.c (revision 87306)
-+++ src/pager.c (working copy)
-@@ -5130,7 +5130,21 @@
-   }
- }
- 
-+#if defined(__APPLE__)
- /*
-+** Create and return a CFURLRef given a cstring containing the path to a file.
-+*/
-+static CFURLRef create_cfurl_from_cstring(const char* filePath){
-+  CFStringRef urlString = CFStringCreateWithFileSystemRepresentation(
-+      kCFAllocatorDefault, filePath);
-+  CFURLRef urlRef = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
-+      urlString, kCFURLPOSIXPathStyle, FALSE);
-+  CFRelease(urlString);
-+  return urlRef;
-+}
-+#endif
-+
-+/*
- ** This function is called at the start of every write transaction.
- ** There must already be a RESERVED or EXCLUSIVE lock on the database 
- ** file when this routine is called.
-@@ -5189,6 +5203,24 @@
-   #else
-         rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0);
-   #endif
-+#if defined(__APPLE__)
-+        /* Set the TimeMachine exclusion metadata for the journal if it has
-+        ** been set for the database. Only do this for unix-type vfs
-+        ** implementations. */
-+        if( rc==SQLITE_OK && pPager->zFilename!=NULL
-+         && strlen(pPager->zFilename)>0
-+         && strncmp(pVfs->zName, "unix", 4)==0
-+         && ( pVfs->zName[4]=='-' || pVfs->zName[4]=='\0' ) ){
-+          CFURLRef database = create_cfurl_from_cstring(pPager->zFilename);
-+          if( CSBackupIsItemExcluded(database, NULL) ){
-+            CFURLRef journal = create_cfurl_from_cstring(pPager->zJournal);
-+            /* Ignore errors from the following exclusion call. */
-+            CSBackupSetItemExcluded(journal, TRUE, FALSE);
-+            CFRelease(journal);
-+          }
-+          CFRelease(database);
-+        }
-+#endif
-       }
-       assert( rc!=SQLITE_OK || isOpen(pPager->jfd) );
-     }
-Index: ext/fts3/fts3_porter.c
-===================================================================
---- ext/fts3/fts3_porter.c      (revision 87306)
-+++ ext/fts3/fts3_porter.c      (working copy)
-@@ -129,7 +129,7 @@
- /*
- ** Vowel or consonant
- */
--static const char cType[] = {
-+static const char vOrCType[] = {
-    0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0,
-    1, 1, 1, 2, 1
- };
-@@ -153,7 +153,7 @@
-   char x = *z;
-   if( x==0 ) return 0;
-   assert( x>='a' && x<='z' );
--  j = cType[x-'a'];
-+  j = vOrCType[x-'a'];
-   if( j<2 ) return j;
-   return z[1]==0 || isVowel(z + 1);
- }
-@@ -162,7 +162,7 @@
-   char x = *z;
-   if( x==0 ) return 0;
-   assert( x>='a' && x<='z' );
--  j = cType[x-'a'];
-+  j = vOrCType[x-'a'];
-   if( j<2 ) return 1-j;
-   return isConsonant(z + 1);
- }