[sql] Move time-machine support from third_party/sqlite to sql/

third_party/sqlite/patches/0003-Exclude-journal-file-from-Time-Machine-if-database-i.patch

-From bacae540479e7dc84bfbd059a20afa2ef00e8cdb Mon Sep 17 00:00:00 2001
-From: mrossetti <mrossetti@chromium.org>
-Date: Tue, 31 May 2011 23:12:11 +0000
-Subject: [PATCH 03/10] Exclude journal file from Time Machine if database is
- excluded.
-
-BUG=74053
-
-Original review URL: http://codereview.chromium.org/6990066
-
-TODO(shess): The fts3_porter.c change is due to a conflict with an included
-Apple library.  Perhaps move the operative code to a .c file, and firewall
-SQLite from that include.
-
-TODO(shess): Revisit this for -wal mode.  http://crbug.com/78507
----
- third_party/sqlite/src/Makefile.linux-gcc     |  4 ++++
- third_party/sqlite/src/ext/fts3/fts3_porter.c |  6 ++---
- third_party/sqlite/src/main.mk                |  2 +-
- third_party/sqlite/src/src/pager.c            | 32 +++++++++++++++++++++++++++
- third_party/sqlite/src/src/sqliteInt.h        | 10 +++++++++
- 5 files changed, 50 insertions(+), 4 deletions(-)
-
-diff --git a/third_party/sqlite/src/Makefile.linux-gcc b/third_party/sqlite/src/Makefile.linux-gcc
-index a1dec21..952e8d1 100644
---- a/third_party/sqlite/src/Makefile.linux-gcc
-+++ b/third_party/sqlite/src/Makefile.linux-gcc
-@@ -44,7 +44,11 @@ THREADLIB = -lpthread
- #### Specify any extra libraries needed to access required functions.
- #
- #TLIBS = -lrt    # fdatasync on Solaris 8
-+ifeq ($(shell uname -s),Darwin)
-+TLIBS = -framework CoreServices
-+else
- TLIBS = -ldl
-+endif
- 
- #### Leave SQLITE_DEBUG undefined for maximum speed.  Use SQLITE_DEBUG=1
- #    to check for memory leaks.  Use SQLITE_DEBUG=2 to print a log of all
-diff --git a/third_party/sqlite/src/ext/fts3/fts3_porter.c b/third_party/sqlite/src/ext/fts3/fts3_porter.c
-index 8fb4c25d..b180ee2 100644
---- a/third_party/sqlite/src/ext/fts3/fts3_porter.c
-+++ b/third_party/sqlite/src/ext/fts3/fts3_porter.c
-@@ -128,7 +128,7 @@ static int porterClose(sqlite3_tokenizer_cursor *pCursor){
- /*
- ** Vowel or consonant
- */
--static const char cType[] = {
-+static const char vOrCType[] = {
-    0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0,
-    1, 1, 1, 2, 1
- };
-@@ -152,7 +152,7 @@ static int isConsonant(const char *z){
-   char x = *z;
-   if( x==0 ) return 0;
-   assert( x>='a' && x<='z' );
--  j = cType[x-'a'];
-+  j = vOrCType[x-'a'];
-   if( j<2 ) return j;
-   return z[1]==0 || isVowel(z + 1);
- }
-@@ -161,7 +161,7 @@ static int isVowel(const char *z){
-   char x = *z;
-   if( x==0 ) return 0;
-   assert( x>='a' && x<='z' );
--  j = cType[x-'a'];
-+  j = vOrCType[x-'a'];
-   if( j<2 ) return 1-j;
-   return isConsonant(z + 1);
- }
-diff --git a/third_party/sqlite/src/main.mk b/third_party/sqlite/src/main.mk
-index fcc0270..6ff3bd4 100644
---- a/third_party/sqlite/src/main.mk
-+++ b/third_party/sqlite/src/main.mk
-@@ -724,7 +724,7 @@ TESTFIXTURE_FLAGS += -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE
- testfixture$(EXE): $(TESTSRC2) libsqlite3.a $(TESTSRC) $(TOP)/src/tclsqlite.c
-        $(TCCX) $(TCL_FLAGS) -DTCLSH=1 $(TESTFIXTURE_FLAGS)                  \
-                $(TESTSRC) $(TESTSRC2) $(TOP)/src/tclsqlite.c                \
--               -o testfixture$(EXE) $(LIBTCL) libsqlite3.a $(THREADLIB)
-+               -o testfixture$(EXE) $(LIBTCL) libsqlite3.a $(THREADLIB) $(TLIBS)
- 
- amalgamation-testfixture$(EXE): sqlite3.c $(TESTSRC) $(TOP)/src/tclsqlite.c
-        $(TCCX) $(TCL_FLAGS) -DTCLSH=1 $(TESTFIXTURE_FLAGS)                  \
-diff --git a/third_party/sqlite/src/src/pager.c b/third_party/sqlite/src/src/pager.c
-index 2c904d2..74c76f37 100644
---- a/third_party/sqlite/src/src/pager.c
-+++ b/third_party/sqlite/src/src/pager.c
-@@ -5497,6 +5497,20 @@ void sqlite3PagerUnref(DbPage *pPg){
-   if( pPg ) sqlite3PagerUnrefNotNull(pPg);
- }
- 
-+#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 
-@@ -5561,6 +5575,24 @@ static int pager_open_journal(Pager *pPager){
- #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) );
-diff --git a/third_party/sqlite/src/src/sqliteInt.h b/third_party/sqlite/src/src/sqliteInt.h
-index c01bbc7..745b910 100644
---- a/third_party/sqlite/src/src/sqliteInt.h
-+++ b/third_party/sqlite/src/src/sqliteInt.h
-@@ -3168,6 +3168,16 @@ int sqlite3CantopenError(int);
- #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.
--- 
-2.7.0
-