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Overview
Comment:Forward port the geopoly extension functions into the r-tree extension, with the idea of creating a new spatial index based on simply polygons.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | rtree-geopoly
Files: files | file ages | folders
SHA3-256: 0593aac88a8c25ddafba4c29a181ee083dfc3dab44335feb6f12fdea6ce7fb27
User & Date: drh 2018-05-25 19:22:47
Context
2018-05-25
20:53
Incremental check-in: Progress toward implementing the geopoly vtab. check-in: 9b7d6f98 user: drh tags: rtree-geopoly
19:22
Forward port the geopoly extension functions into the r-tree extension, with the idea of creating a new spatial index based on simply polygons. check-in: 0593aac8 user: drh tags: rtree-geopoly
2018-05-24
23:51
When doing a one-pass UPDATE or DELETE on virtual tables, close the cursor prior to running VUpdate. This allows one-pass to work on virtual tables that do not allow concurrent reads and writes. Enhance rtree to take advantage of this new capability. check-in: b816023c user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to Makefile.in.

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  $(TOP)/ext/fts3/fts3_unicode2.c \
  $(TOP)/ext/fts3/fts3_write.c
SRC += \
  $(TOP)/ext/icu/sqliteicu.h \
  $(TOP)/ext/icu/icu.c
SRC += \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/rtree.c

SRC += \
  $(TOP)/ext/session/sqlite3session.c \
  $(TOP)/ext/session/sqlite3session.h
SRC += \
  $(TOP)/ext/rbu/sqlite3rbu.h \
  $(TOP)/ext/rbu/sqlite3rbu.c
SRC += \
................................................................................
  $(TOP)/ext/fts2/fts2_tokenizer.h
EXTHDR += \
  $(TOP)/ext/fts3/fts3.h \
  $(TOP)/ext/fts3/fts3Int.h \
  $(TOP)/ext/fts3/fts3_hash.h \
  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h

EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/rtree/sqlite3rtree.h

# executables needed for testing
#







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  $(TOP)/ext/fts3/fts3_unicode2.c \
  $(TOP)/ext/fts3/fts3_write.c
SRC += \
  $(TOP)/ext/icu/sqliteicu.h \
  $(TOP)/ext/icu/icu.c
SRC += \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/rtree.c \
  $(TOP)/ext/rtree/geopoly.c
SRC += \
  $(TOP)/ext/session/sqlite3session.c \
  $(TOP)/ext/session/sqlite3session.h
SRC += \
  $(TOP)/ext/rbu/sqlite3rbu.h \
  $(TOP)/ext/rbu/sqlite3rbu.c
SRC += \
................................................................................
  $(TOP)/ext/fts2/fts2_tokenizer.h
EXTHDR += \
  $(TOP)/ext/fts3/fts3.h \
  $(TOP)/ext/fts3/fts3Int.h \
  $(TOP)/ext/fts3/fts3_hash.h \
  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/geopoly.c
EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/rtree/sqlite3rtree.h

# executables needed for testing
#

Changes to Makefile.msc.

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# These are the "standard" SQLite compilation options used when compiling for
# the Windows platform.
#
!IFNDEF OPT_FEATURE_FLAGS
!IF $(MINIMAL_AMALGAMATION)==0
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1
!ENDIF
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
!ENDIF

# Should the session extension be enabled?  If so, add compilation options
# to enable it.
#
................................................................................
SRC09 = \
  $(TOP)\ext\fts3\fts3.h \
  $(TOP)\ext\fts3\fts3Int.h \
  $(TOP)\ext\fts3\fts3_hash.h \
  $(TOP)\ext\fts3\fts3_tokenizer.h \
  $(TOP)\ext\icu\sqliteicu.h \
  $(TOP)\ext\rtree\rtree.h \

  $(TOP)\ext\rbu\sqlite3rbu.h \
  $(TOP)\ext\session\sqlite3session.h

# Generated source code files
#
SRC10 = \
  opcodes.c \
................................................................................
  $(TOP)\ext\fts2\fts2_tokenizer.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\fts3\fts3.h \
  $(TOP)\ext\fts3\fts3Int.h \
  $(TOP)\ext\fts3\fts3_hash.h \
  $(TOP)\ext\fts3\fts3_tokenizer.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\rtree\rtree.h

EXTHDR = $(EXTHDR) \
  $(TOP)\ext\icu\sqliteicu.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\rtree\sqlite3rtree.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\session\sqlite3session.h








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# These are the "standard" SQLite compilation options used when compiling for
# the Windows platform.
#
!IFNDEF OPT_FEATURE_FLAGS
!IF $(MINIMAL_AMALGAMATION)==0
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_FTS3=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_RTREE=1 -DSQLITE_ENABLE_GEOPOLY=1
!ENDIF
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
!ENDIF

# Should the session extension be enabled?  If so, add compilation options
# to enable it.
#
................................................................................
SRC09 = \
  $(TOP)\ext\fts3\fts3.h \
  $(TOP)\ext\fts3\fts3Int.h \
  $(TOP)\ext\fts3\fts3_hash.h \
  $(TOP)\ext\fts3\fts3_tokenizer.h \
  $(TOP)\ext\icu\sqliteicu.h \
  $(TOP)\ext\rtree\rtree.h \
  $(TOP)\ext\rtree\geopoly.c \
  $(TOP)\ext\rbu\sqlite3rbu.h \
  $(TOP)\ext\session\sqlite3session.h

# Generated source code files
#
SRC10 = \
  opcodes.c \
................................................................................
  $(TOP)\ext\fts2\fts2_tokenizer.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\fts3\fts3.h \
  $(TOP)\ext\fts3\fts3Int.h \
  $(TOP)\ext\fts3\fts3_hash.h \
  $(TOP)\ext\fts3\fts3_tokenizer.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\rtree\rtree.h \
  $(TOP)\ext\rtree\geopoly.c
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\icu\sqliteicu.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\rtree\sqlite3rtree.h
EXTHDR = $(EXTHDR) \
  $(TOP)\ext\session\sqlite3session.h

Changes to configure.

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enable_memsys5
enable_memsys3
enable_fts3
enable_fts4
enable_fts5
enable_json1
enable_update_limit

enable_rtree
enable_session
enable_gcov
'
      ac_precious_vars='build_alias
host_alias
target_alias
................................................................................
  --enable-memsys5        Enable MEMSYS5
  --enable-memsys3        Enable MEMSYS3
  --enable-fts3           Enable the FTS3 extension
  --enable-fts4           Enable the FTS4 extension
  --enable-fts5           Enable the FTS5 extension
  --enable-json1          Enable the JSON1 extension
  --enable-update-limit   Enable the UPDATE/DELETE LIMIT clause

  --enable-rtree          Enable the RTREE extension
  --enable-session        Enable the SESSION extension
  --enable-gcov           Enable coverage testing using gcov

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
................................................................................
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
$as_echo_n "checking the name lister ($NM) interface... " >&6; }
if ${lt_cv_nm_interface+:} false; then :
  $as_echo_n "(cached) " >&6
else
  lt_cv_nm_interface="BSD nm"
  echo "int some_variable = 0;" > conftest.$ac_ext
  (eval echo "\"\$as_me:3935: $ac_compile\"" >&5)
  (eval "$ac_compile" 2>conftest.err)
  cat conftest.err >&5
  (eval echo "\"\$as_me:3938: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
  cat conftest.err >&5
  (eval echo "\"\$as_me:3941: output\"" >&5)
  cat conftest.out >&5
  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
    lt_cv_nm_interface="MS dumpbin"
  fi
  rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
................................................................................
	;;
    esac
  fi
  rm -rf conftest*
  ;;
*-*-irix6*)
  # Find out which ABI we are using.
  echo '#line 5147 "configure"' > conftest.$ac_ext
  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; then
    if test "$lt_cv_prog_gnu_ld" = yes; then
      case `/usr/bin/file conftest.$ac_objext` in
................................................................................
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   # The option is referenced via a variable to avoid confusing sed.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:6672: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
   echo "$as_me:6676: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
       lt_cv_prog_compiler_rtti_exceptions=yes
................................................................................
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   # The option is referenced via a variable to avoid confusing sed.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7011: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
   echo "$as_me:7015: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
       lt_cv_prog_compiler_pic_works=yes
................................................................................
   # (2) before a word containing "conftest.", or (3) at the end.
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7116: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
   echo "$as_me:7120: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
................................................................................
   # (2) before a word containing "conftest.", or (3) at the end.
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7171: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
   echo "$as_me:7175: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
................................................................................
else
  	  if test "$cross_compiling" = yes; then :
  lt_cv_dlopen_self=cross
else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
#line 9551 "configure"
#include "confdefs.h"

#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif

#include <stdio.h>
................................................................................
else
  	  if test "$cross_compiling" = yes; then :
  lt_cv_dlopen_self_static=cross
else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
#line 9647 "configure"
#include "confdefs.h"

#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif

#include <stdio.h>
................................................................................
else
  enable_udlimit=no
fi

if test "${enable_udlimit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
fi















#########
# See whether we should enable RTREE
# Check whether --enable-rtree was given.
if test "${enable_rtree+set}" = set; then :
  enableval=$enable_rtree; enable_rtree=yes
else







>







 







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enable_memsys5
enable_memsys3
enable_fts3
enable_fts4
enable_fts5
enable_json1
enable_update_limit
enable_geopoly
enable_rtree
enable_session
enable_gcov
'
      ac_precious_vars='build_alias
host_alias
target_alias
................................................................................
  --enable-memsys5        Enable MEMSYS5
  --enable-memsys3        Enable MEMSYS3
  --enable-fts3           Enable the FTS3 extension
  --enable-fts4           Enable the FTS4 extension
  --enable-fts5           Enable the FTS5 extension
  --enable-json1          Enable the JSON1 extension
  --enable-update-limit   Enable the UPDATE/DELETE LIMIT clause
  --enable-geopoly        Enable the GEOPOLY extension
  --enable-rtree          Enable the RTREE extension
  --enable-session        Enable the SESSION extension
  --enable-gcov           Enable coverage testing using gcov

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
................................................................................
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
$as_echo_n "checking the name lister ($NM) interface... " >&6; }
if ${lt_cv_nm_interface+:} false; then :
  $as_echo_n "(cached) " >&6
else
  lt_cv_nm_interface="BSD nm"
  echo "int some_variable = 0;" > conftest.$ac_ext
  (eval echo "\"\$as_me:3937: $ac_compile\"" >&5)
  (eval "$ac_compile" 2>conftest.err)
  cat conftest.err >&5
  (eval echo "\"\$as_me:3940: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
  cat conftest.err >&5
  (eval echo "\"\$as_me:3943: output\"" >&5)
  cat conftest.out >&5
  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
    lt_cv_nm_interface="MS dumpbin"
  fi
  rm -f conftest*
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
................................................................................
	;;
    esac
  fi
  rm -rf conftest*
  ;;
*-*-irix6*)
  # Find out which ABI we are using.
  echo '#line 5149 "configure"' > conftest.$ac_ext
  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; then
    if test "$lt_cv_prog_gnu_ld" = yes; then
      case `/usr/bin/file conftest.$ac_objext` in
................................................................................
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   # The option is referenced via a variable to avoid confusing sed.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:6674: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
   echo "$as_me:6678: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
       lt_cv_prog_compiler_rtti_exceptions=yes
................................................................................
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   # The option is referenced via a variable to avoid confusing sed.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7013: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>conftest.err)
   ac_status=$?
   cat conftest.err >&5
   echo "$as_me:7017: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s "$ac_outfile"; then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings other than the usual output.
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' >conftest.exp
     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
       lt_cv_prog_compiler_pic_works=yes
................................................................................
   # (2) before a word containing "conftest.", or (3) at the end.
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7118: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
   echo "$as_me:7122: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
................................................................................
   # (2) before a word containing "conftest.", or (3) at the end.
   # Note that $ac_compile itself does not contain backslashes and begins
   # with a dollar sign (not a hyphen), so the echo should work correctly.
   lt_compile=`echo "$ac_compile" | $SED \
   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
   -e 's:$: $lt_compiler_flag:'`
   (eval echo "\"\$as_me:7173: $lt_compile\"" >&5)
   (eval "$lt_compile" 2>out/conftest.err)
   ac_status=$?
   cat out/conftest.err >&5
   echo "$as_me:7177: \$? = $ac_status" >&5
   if (exit $ac_status) && test -s out/conftest2.$ac_objext
   then
     # The compiler can only warn and ignore the option if not recognized
     # So say no if there are warnings
     $ECHO "X$_lt_compiler_boilerplate" | $Xsed -e '/^$/d' > out/conftest.exp
     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
................................................................................
else
  	  if test "$cross_compiling" = yes; then :
  lt_cv_dlopen_self=cross
else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
#line 9553 "configure"
#include "confdefs.h"

#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif

#include <stdio.h>
................................................................................
else
  	  if test "$cross_compiling" = yes; then :
  lt_cv_dlopen_self_static=cross
else
  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
  lt_status=$lt_dlunknown
  cat > conftest.$ac_ext <<_LT_EOF
#line 9649 "configure"
#include "confdefs.h"

#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif

#include <stdio.h>
................................................................................
else
  enable_udlimit=no
fi

if test "${enable_udlimit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
fi

#########
# See whether we should enable GEOPOLY
# Check whether --enable-geopoly was given.
if test "${enable_geopoly+set}" = set; then :
  enableval=$enable_geopoly; enable_geopoly=yes
else
  enable_geopoly=no
fi

if test "${enable_geopoly}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_GEOPOLY"
  enable_rtree=yes
fi

#########
# See whether we should enable RTREE
# Check whether --enable-rtree was given.
if test "${enable_rtree+set}" = set; then :
  enableval=$enable_rtree; enable_rtree=yes
else

Changes to configure.ac.

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# statements.
AC_ARG_ENABLE(update-limit, AC_HELP_STRING([--enable-update-limit],
      [Enable the UPDATE/DELETE LIMIT clause]),
      [enable_udlimit=yes],[enable_udlimit=no])
if test "${enable_udlimit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
fi











#########
# See whether we should enable RTREE
AC_ARG_ENABLE(rtree, AC_HELP_STRING([--enable-rtree],
      [Enable the RTREE extension]),
      [enable_rtree=yes],[enable_rtree=no])
if test "${enable_rtree}" = "yes" ; then







>
>
>
>
>
>
>
>
>
>







655
656
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# statements.
AC_ARG_ENABLE(update-limit, AC_HELP_STRING([--enable-update-limit],
      [Enable the UPDATE/DELETE LIMIT clause]),
      [enable_udlimit=yes],[enable_udlimit=no])
if test "${enable_udlimit}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT"
fi

#########
# See whether we should enable GEOPOLY
AC_ARG_ENABLE(geopoly, AC_HELP_STRING([--enable-geopoly],
      [Enable the GEOPOLY extension]),
      [enable_geopoly=yes],[enable_geopoly=no])
if test "${enable_geopoly}" = "yes" ; then
  OPT_FEATURE_FLAGS="${OPT_FEATURE_FLAGS} -DSQLITE_ENABLE_GEOPOLY"
  enable_rtree=yes
fi

#########
# See whether we should enable RTREE
AC_ARG_ENABLE(rtree, AC_HELP_STRING([--enable-rtree],
      [Enable the RTREE extension]),
      [enable_rtree=yes],[enable_rtree=no])
if test "${enable_rtree}" = "yes" ; then

Added ext/rtree/geopoly.c.











































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** 2018-05-25
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
******************************************************************************
**
** This file implements an alternative R-Tree virtual table that
** uses polygons to express the boundaries of 2-dimensional objects.
**
** This file is #include-ed onto the end of "rtree.c" so that it has
** access to all of the R-Tree internals.
*/
#include <stdlib.h>

/* Enable -DGEOPOLY_ENABLE_DEBUG for debugging facilities */
#ifdef GEOPOLY_ENABLE_DEBUG
  static int geo_debug = 0;
# define GEODEBUG(X) if(geo_debug)printf X
#else
# define GEODEBUG(X)
#endif

#ifndef JSON_NULL   /* The following stuff repeats things found in json1 */
/*
** Versions of isspace(), isalnum() and isdigit() to which it is safe
** to pass signed char values.
*/
#ifdef sqlite3Isdigit
   /* Use the SQLite core versions if this routine is part of the
   ** SQLite amalgamation */
#  define safe_isdigit(x)  sqlite3Isdigit(x)
#  define safe_isalnum(x)  sqlite3Isalnum(x)
#  define safe_isxdigit(x) sqlite3Isxdigit(x)
#else
   /* Use the standard library for separate compilation */
#include <ctype.h>  /* amalgamator: keep */
#  define safe_isdigit(x)  isdigit((unsigned char)(x))
#  define safe_isalnum(x)  isalnum((unsigned char)(x))
#  define safe_isxdigit(x) isxdigit((unsigned char)(x))
#endif

/*
** Growing our own isspace() routine this way is twice as fast as
** the library isspace() function.
*/
static const char geopolyIsSpace[] = {
  0, 0, 0, 0, 0, 0, 0, 0,     0, 1, 1, 0, 0, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  1, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
};
#define safe_isspace(x) (geopolyIsSpace[(unsigned char)x])
#endif /* JSON NULL - back to original code */

/* Compiler and version */
#ifndef GCC_VERSION
#if defined(__GNUC__) && !defined(SQLITE_DISABLE_INTRINSIC)
# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__)
#else
# define GCC_VERSION 0
#endif
#endif
#ifndef MSVC_VERSION
#if defined(_MSC_VER) && !defined(SQLITE_DISABLE_INTRINSIC)
# define MSVC_VERSION _MSC_VER
#else
# define MSVC_VERSION 0
#endif
#endif

/* Datatype for coordinates
*/
typedef float GeoCoord;

/*
** Internal representation of a polygon.
**
** The polygon consists of a sequence of vertexes.  There is a line
** segment between each pair of vertexes, and one final segment from
** the last vertex back to the first.  (This differs from the GeoJSON
** standard in which the final vertex is a repeat of the first.)
**
** The polygon follows the right-hand rule.  The area to the right of
** each segment is "outside" and the area to the left is "inside".
**
** The on-disk representation consists of a 4-byte header followed by
** the values.  The 4-byte header is:
**
**      encoding    (1 byte)   0=big-endian, 1=little-endian
**      nvertex     (3 bytes)  Number of vertexes as a big-endian integer
*/
typedef struct GeoPoly GeoPoly;
struct GeoPoly {
  int nVertex;          /* Number of vertexes */
  unsigned char hdr[4]; /* Header for on-disk representation */
  GeoCoord a[2];    /* 2*nVertex values. X (longitude) first, then Y */
};

/*
** State of a parse of a GeoJSON input.
*/
typedef struct GeoParse GeoParse;
struct GeoParse {
  const unsigned char *z;   /* Unparsed input */
  int nVertex;              /* Number of vertexes in a[] */
  int nAlloc;               /* Space allocated to a[] */
  int nErr;                 /* Number of errors encountered */
  GeoCoord *a;          /* Array of vertexes.  From sqlite3_malloc64() */
};

/* Do a 4-byte byte swap */
static void geopolySwab32(unsigned char *a){
  unsigned char t = a[0];
  a[0] = a[3];
  a[3] = t;
  t = a[1];
  a[1] = a[2];
  a[2] = t;
}

/* Skip whitespace.  Return the next non-whitespace character. */
static char geopolySkipSpace(GeoParse *p){
  while( p->z[0] && safe_isspace(p->z[0]) ) p->z++;
  return p->z[0];
}

/* Parse out a number.  Write the value into *pVal if pVal!=0.
** return non-zero on success and zero if the next token is not a number.
*/
static int geopolyParseNumber(GeoParse *p, GeoCoord *pVal){
  const unsigned char *z = p->z;
  char c = geopolySkipSpace(p);
  int j;
  int seenDP = 0;
  int seenE = 0;
  assert( '-' < '0' );
  if( c<='0' ){
    j = c=='-';
    if( z[j]=='0' && z[j+1]>='0' && z[j+1]<='9' ) return 0;
  }
  j = 1;
  for(;; j++){
    c = z[j];
    if( c>='0' && c<='9' ) continue;
    if( c=='.' ){
      if( z[j-1]=='-' ) return 0;
      if( seenDP ) return 0;
      seenDP = 1;
      continue;
    }
    if( c=='e' || c=='E' ){
      if( z[j-1]<'0' ) return 0;
      if( seenE ) return -1;
      seenDP = seenE = 1;
      c = z[j+1];
      if( c=='+' || c=='-' ){
        j++;
        c = z[j+1];
      }
      if( c<'0' || c>'9' ) return 0;
      continue;
    }
    break;
  }
  if( z[j-1]<'0' ) return 0;
  if( pVal ) *pVal = atof((const char*)p->z);
  p->z += j;
  return 1;
}

/*
** If the input is a well-formed JSON array of coordinates, where each
** coordinate is itself a two-value array, then convert the JSON into
** a GeoPoly object and return a pointer to that object.
**
** If any error occurs, return NULL.
*/
static GeoPoly *geopolyParseJson(const unsigned char *z){
  GeoParse s;
  memset(&s, 0, sizeof(s));
  s.z = z;
  if( geopolySkipSpace(&s)=='[' ){
    s.z++;
    while( geopolySkipSpace(&s)=='[' ){
      int ii = 0;
      char c;
      s.z++;
      if( s.nVertex<=s.nAlloc ){
        GeoCoord *aNew;
        s.nAlloc = s.nAlloc*2 + 16;
        aNew = sqlite3_realloc64(s.a, s.nAlloc*sizeof(GeoCoord)*2 );
        if( aNew==0 ){
          s.nErr++;
          break;
        }
        s.a = aNew;
      }
      while( geopolyParseNumber(&s, ii<=1 ? &s.a[s.nVertex*2+ii] : 0) ){
        ii++;
        if( ii==2 ) s.nVertex++;
        c = geopolySkipSpace(&s);
        s.z++;
        if( c==',' ) continue;
        if( c==']' ) break;
        s.nErr++;
        goto parse_json_err;
      }
      if( geopolySkipSpace(&s)==',' ){
        s.z++;
        continue;
      }
      break;
    }
    if( geopolySkipSpace(&s)==']' && s.nVertex>=4 ){
      int nByte;
      GeoPoly *pOut;
      int x = (s.nVertex-1)*2;
      if( s.a[x]==s.a[0] && s.a[x+1]==s.a[1] ) s.nVertex--;
      nByte = sizeof(GeoPoly) * (s.nVertex-1)*2*sizeof(GeoCoord);
      pOut = sqlite3_malloc64( nByte );
      x = 1;
      if( pOut==0 ) goto parse_json_err;
      pOut->nVertex = s.nVertex;
      memcpy(pOut->a, s.a, s.nVertex*2*sizeof(GeoCoord));
      pOut->hdr[0] = *(unsigned char*)&x;
      pOut->hdr[1] = (s.nVertex>>16)&0xff;
      pOut->hdr[2] = (s.nVertex>>8)&0xff;
      pOut->hdr[3] = s.nVertex&0xff;
      sqlite3_free(s.a);
      return pOut;
    }else{
      s.nErr++;
    }
  }
parse_json_err:
  sqlite3_free(s.a);
  return 0;
}

/*
** Given a function parameter, try to interpret it as a polygon, either
** in the binary format or JSON text.  Compute a GeoPoly object and
** return a pointer to that object.  Or if the input is not a well-formed
** polygon, put an error message in sqlite3_context and return NULL.
*/
static GeoPoly *geopolyFuncParam(sqlite3_context *pCtx, sqlite3_value *pVal){
  GeoPoly *p = 0;
  int nByte;
  if( sqlite3_value_type(pVal)==SQLITE_BLOB
   && (nByte = sqlite3_value_bytes(pVal))>=(4+6*sizeof(GeoCoord))
  ){
    const unsigned char *a = sqlite3_value_blob(pVal);
    int nVertex;
    nVertex = (a[1]<<16) + (a[2]<<8) + a[3];
    if( (a[0]==0 && a[0]==1)
     && (nVertex*2*sizeof(GeoCoord) + 4)==nByte
    ){
      p = sqlite3_malloc64( sizeof(*p) + (nVertex-1)*2*sizeof(GeoCoord) );
      if( p ){
        int x = 1;
        p->nVertex = nVertex;
        memcpy(p->hdr, a, nByte);
        if( a[0] != *(unsigned char*)&x ){
          int ii;
          for(ii=0; ii<nVertex*2; ii++){
            geopolySwab32((unsigned char*)&p->a[ii]);
          }
          p->hdr[0] ^= 1;
        }
      }
    }
  }else if( sqlite3_value_type(pVal)==SQLITE_TEXT ){
    p = geopolyParseJson(sqlite3_value_text(pVal));
  }
  if( p==0 ){
    sqlite3_result_error(pCtx, "not a valid polygon", -1);
  }
  return p;
}

/*
** Implementation of the geopoly_blob(X) function.
**
** If the input is a well-formed Geopoly BLOB or JSON string
** then return the BLOB representation of the polygon.  Otherwise
** return NULL.
*/
static void geopolyBlobFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p = geopolyFuncParam(context, argv[0]);
  if( p ){
    sqlite3_result_blob(context, p->hdr, 
       4+8*p->nVertex, SQLITE_TRANSIENT);
    sqlite3_free(p);
  }
}

/*
** SQL function:     geopoly_json(X)
**
** Interpret X as a polygon and render it as a JSON array
** of coordinates.  Or, if X is not a valid polygon, return NULL.
*/
static void geopolyJsonFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p = geopolyFuncParam(context, argv[0]);
  if( p ){
    sqlite3 *db = sqlite3_context_db_handle(context);
    sqlite3_str *x = sqlite3_str_new(db);
    int i;
    sqlite3_str_append(x, "[", 1);
    for(i=0; i<p->nVertex; i++){
      sqlite3_str_appendf(x, "[%!g,%!g],", p->a[i*2], p->a[i*2+1]);
    }
    sqlite3_str_appendf(x, "[%!g,%!g]]", p->a[0], p->a[1]);
    sqlite3_result_text(context, sqlite3_str_finish(x), -1, sqlite3_free);
    sqlite3_free(p);
  }
}

/*
** SQL function:     geopoly_svg(X, ....)
**
** Interpret X as a polygon and render it as a SVG <polyline>.
** Additional arguments are added as attributes to the <polyline>.
*/
static void geopolySvgFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p = geopolyFuncParam(context, argv[0]);
  if( p ){
    sqlite3 *db = sqlite3_context_db_handle(context);
    sqlite3_str *x = sqlite3_str_new(db);
    int i;
    char cSep = '\'';
    sqlite3_str_appendf(x, "<polyline points=");
    for(i=0; i<p->nVertex; i++){
      sqlite3_str_appendf(x, "%c%g,%g", cSep, p->a[i*2], p->a[i*2+1]);
      cSep = ' ';
    }
    sqlite3_str_appendf(x, " %g,%g'", p->a[0], p->a[1]);
    for(i=1; i<argc; i++){
      const char *z = (const char*)sqlite3_value_text(argv[i]);
      if( z && z[0] ){
        sqlite3_str_appendf(x, " %s", z);
      }
    }
    sqlite3_str_appendf(x, "></polyline>");
    sqlite3_result_text(context, sqlite3_str_finish(x), -1, sqlite3_free);
    sqlite3_free(p);
  }
}

/*
** Implementation of the geopoly_area(X) function.
**
** If the input is a well-formed Geopoly BLOB then return the area
** enclosed by the polygon.  If the polygon circulates clockwise instead
** of counterclockwise (as it should) then return the negative of the
** enclosed area.  Otherwise return NULL.
*/
static void geopolyAreaFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p = geopolyFuncParam(context, argv[0]);
  if( p ){
    double rArea = 0.0;
    int ii;
    for(ii=0; ii<p->nVertex-1; ii++){
      rArea += (p->a[ii*2] - p->a[ii*2+2])           /* (x0 - x1) */
                * (p->a[ii*2+1] + p->a[ii*2+3])      /* (y0 + y1) */
                * 0.5;
    }
    rArea += (p->a[ii*2] - p->a[0])                  /* (xN - x0) */
             * (p->a[ii*2+1] + p->a[1])              /* (yN + y0) */
             * 0.5;
    sqlite3_result_double(context, rArea);
    sqlite3_free(p);
  }            
}

/*
** Determine if point (x0,y0) is beneath line segment (x1,y1)->(x2,y2).
** Returns:
**
**    +2  x0,y0 is on the line segement
**
**    +1  x0,y0 is beneath line segment
**
**    0   x0,y0 is not on or beneath the line segment or the line segment
**        is vertical and x0,y0 is not on the line segment
**
** The left-most coordinate min(x1,x2) is not considered to be part of
** the line segment for the purposes of this analysis.
*/
static int pointBeneathLine(
  double x0, double y0,
  double x1, double y1,
  double x2, double y2
){
  double y;
  if( x0==x1 && y0==y1 ) return 2;
  if( x1<x2 ){
    if( x0<=x1 || x0>x2 ) return 0;
  }else if( x1>x2 ){
    if( x0<=x2 || x0>x1 ) return 0;
  }else{
    /* Vertical line segment */
    if( x0!=x1 ) return 0;
    if( y0<y1 && y0<y2 ) return 0;
    if( y0>y1 && y0>y2 ) return 0;
    return 2;
  }
  y = y1 + (y2-y1)*(x0-x1)/(x2-x1);
  if( y0==y ) return 2;
  if( y0<y ) return 1;
  return 0;
}

/*
** SQL function:    geopoly_within(P,X,Y)
**
** Return +2 if point X,Y is within polygon P.
** Return +1 if point X,Y is on the polygon boundary.
** Return 0 if point X,Y is outside the polygon
*/
static void geopolyWithinFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p = geopolyFuncParam(context, argv[0]);
  double x0 = sqlite3_value_double(argv[1]);
  double y0 = sqlite3_value_double(argv[2]);
  if( p ){
    int v = 0;
    int cnt = 0;
    int ii;
    for(ii=0; ii<p->nVertex-1; ii++){
      v = pointBeneathLine(x0,y0,p->a[ii*2],p->a[ii*2+1],
                                 p->a[ii*2+2],p->a[ii*2+3]);
      if( v==2 ) break;
      cnt += v;
    }
    if( v!=2 ){
      v = pointBeneathLine(x0,y0,p->a[ii*2],p->a[ii*2+1],
                                 p->a[0],p->a[1]);
    }
    if( v==2 ){
      sqlite3_result_int(context, 1);
    }else if( ((v+cnt)&1)==0 ){
      sqlite3_result_int(context, 0);
    }else{
      sqlite3_result_int(context, 2);
    }
    sqlite3_free(p);
  }            
}

/* Objects used by the overlap algorihm. */
typedef struct GeoEvent GeoEvent;
typedef struct GeoSegment GeoSegment;
typedef struct GeoOverlap GeoOverlap;
struct GeoEvent {
  double x;              /* X coordinate at which event occurs */
  int eType;             /* 0 for ADD, 1 for REMOVE */
  GeoSegment *pSeg;      /* The segment to be added or removed */
  GeoEvent *pNext;       /* Next event in the sorted list */
};
struct GeoSegment {
  double C, B;           /* y = C*x + B */
  double y;              /* Current y value */
  float y0;              /* Initial y value */
  unsigned char side;    /* 1 for p1, 2 for p2 */
  unsigned int idx;      /* Which segment within the side */
  GeoSegment *pNext;     /* Next segment in a list sorted by y */
};
struct GeoOverlap {
  GeoEvent *aEvent;          /* Array of all events */
  GeoSegment *aSegment;      /* Array of all segments */
  int nEvent;                /* Number of events */
  int nSegment;              /* Number of segments */
};

/*
** Add a single segment and its associated events.
*/
static void geopolyAddOneSegment(
  GeoOverlap *p,
  GeoCoord x0,
  GeoCoord y0,
  GeoCoord x1,
  GeoCoord y1,
  unsigned char side,
  unsigned int idx
){
  GeoSegment *pSeg;
  GeoEvent *pEvent;
  if( x0==x1 ) return;  /* Ignore vertical segments */
  if( x0>x1 ){
    GeoCoord t = x0;
    x0 = x1;
    x1 = t;
    t = y0;
    y0 = y1;
    y1 = t;
  }
  pSeg = p->aSegment + p->nSegment;
  p->nSegment++;
  pSeg->C = (y1-y0)/(x1-x0);
  pSeg->B = y1 - x1*pSeg->C;
  pSeg->y0 = y0;
  pSeg->side = side;
  pSeg->idx = idx;
  pEvent = p->aEvent + p->nEvent;
  p->nEvent++;
  pEvent->x = x0;
  pEvent->eType = 0;
  pEvent->pSeg = pSeg;
  pEvent = p->aEvent + p->nEvent;
  p->nEvent++;
  pEvent->x = x1;
  pEvent->eType = 1;
  pEvent->pSeg = pSeg;
}
  


/*
** Insert all segments and events for polygon pPoly.
*/
static void geopolyAddSegments(
  GeoOverlap *p,          /* Add segments to this Overlap object */
  GeoPoly *pPoly,         /* Take all segments from this polygon */
  unsigned char side      /* The side of pPoly */
){
  unsigned int i;
  GeoCoord *x;
  for(i=0; i<pPoly->nVertex-1; i++){
    x = pPoly->a + (i*2);
    geopolyAddOneSegment(p, x[0], x[1], x[2], x[3], side, i);
  }
  x = pPoly->a + (i*2);
  geopolyAddOneSegment(p, x[0], x[1], pPoly->a[0], pPoly->a[1], side, i);
}

/*
** Merge two lists of sorted events by X coordinate
*/
static GeoEvent *geopolyEventMerge(GeoEvent *pLeft, GeoEvent *pRight){
  GeoEvent head, *pLast;
  head.pNext = 0;
  pLast = &head;
  while( pRight && pLeft ){
    if( pRight->x <= pLeft->x ){
      pLast->pNext = pRight;
      pLast = pRight;
      pRight = pRight->pNext;
    }else{
      pLast->pNext = pLeft;
      pLast = pLeft;
      pLeft = pLeft->pNext;
    }
  }
  pLast->pNext = pRight ? pRight : pLeft;
  return head.pNext;  
}

/*
** Sort an array of nEvent event objects into a list.
*/
static GeoEvent *geopolySortEventsByX(GeoEvent *aEvent, int nEvent){
  int mx = 0;
  int i, j;
  GeoEvent *p;
  GeoEvent *a[50];
  for(i=0; i<nEvent; i++){
    p = &aEvent[i];
    p->pNext = 0;
    for(j=0; j<mx && a[j]; j++){
      p = geopolyEventMerge(a[j], p);
      a[j] = 0;
    }
    a[j] = p;
    if( j>=mx ) mx = j+1;
  }
  p = 0;
  for(i=0; i<mx; i++){
    p = geopolyEventMerge(a[i], p);
  }
  return p;
}

/*
** Merge two lists of sorted segments by Y, and then by C.
*/
static GeoSegment *geopolySegmentMerge(GeoSegment *pLeft, GeoSegment *pRight){
  GeoSegment head, *pLast;
  head.pNext = 0;
  pLast = &head;
  while( pRight && pLeft ){
    double r = pRight->y - pLeft->y;
    if( r==0.0 ) r = pRight->C - pLeft->C;
    if( r<0.0 ){
      pLast->pNext = pRight;
      pLast = pRight;
      pRight = pRight->pNext;
    }else{
      pLast->pNext = pLeft;
      pLast = pLeft;
      pLeft = pLeft->pNext;
    }
  }
  pLast->pNext = pRight ? pRight : pLeft;
  return head.pNext;  
}

/*
** Sort a list of GeoSegments in order of increasing Y and in the event of
** a tie, increasing C (slope).
*/
static GeoSegment *geopolySortSegmentsByYAndC(GeoSegment *pList){
  int mx = 0;
  int i;
  GeoSegment *p;
  GeoSegment *a[50];
  while( pList ){
    p = pList;
    pList = pList->pNext;
    p->pNext = 0;
    for(i=0; i<mx && a[i]; i++){
      p = geopolySegmentMerge(a[i], p);
      a[i] = 0;
    }
    a[i] = p;
    if( i>=mx ) mx = i+1;
  }
  p = 0;
  for(i=0; i<mx; i++){
    p = geopolySegmentMerge(a[i], p);
  }
  return p;
}

/*
** Determine the overlap between two polygons
*/
static int geopolyOverlap(GeoPoly *p1, GeoPoly *p2){
  int nVertex = p1->nVertex + p2->nVertex + 2;
  GeoOverlap *p;
  int nByte;
  GeoEvent *pThisEvent;
  double rX;
  int rc = 0;
  int needSort = 0;
  GeoSegment *pActive = 0;
  GeoSegment *pSeg;
  unsigned char aOverlap[4];

  nByte = sizeof(GeoEvent)*nVertex*2 
           + sizeof(GeoSegment)*nVertex 
           + sizeof(GeoOverlap);
  p = sqlite3_malloc( nByte );
  if( p==0 ) return -1;
  p->aEvent = (GeoEvent*)&p[1];
  p->aSegment = (GeoSegment*)&p->aEvent[nVertex*2];
  p->nEvent = p->nSegment = 0;
  geopolyAddSegments(p, p1, 1);
  geopolyAddSegments(p, p2, 2);
  pThisEvent = geopolySortEventsByX(p->aEvent, p->nEvent);
  rX = pThisEvent->x==0.0 ? -1.0 : 0.0;
  memset(aOverlap, 0, sizeof(aOverlap));
  while( pThisEvent ){
    if( pThisEvent->x!=rX ){
      GeoSegment *pPrev = 0;
      int iMask = 0;
      GEODEBUG(("Distinct X: %g\n", pThisEvent->x));
      rX = pThisEvent->x;
      if( needSort ){
        GEODEBUG(("SORT\n"));
        pActive = geopolySortSegmentsByYAndC(pActive);
        needSort = 0;
      }
      for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){
        if( pPrev ){
          if( pPrev->y!=pSeg->y ){
            GEODEBUG(("MASK: %d\n", iMask));
            aOverlap[iMask] = 1;
          }
        }
        iMask ^= pSeg->side;
        pPrev = pSeg;
      }
      pPrev = 0;
      for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){
        double y = pSeg->C*rX + pSeg->B;
        GEODEBUG(("Segment %d.%d %g->%g\n", pSeg->side, pSeg->idx, pSeg->y, y));
        pSeg->y = y;
        if( pPrev ){
          if( pPrev->y>pSeg->y && pPrev->side!=pSeg->side ){
            rc = 1;
            GEODEBUG(("Crossing: %d.%d and %d.%d\n",
                    pPrev->side, pPrev->idx,
                    pSeg->side, pSeg->idx));
            goto geopolyOverlapDone;
          }else if( pPrev->y!=pSeg->y ){
            GEODEBUG(("MASK: %d\n", iMask));
            aOverlap[iMask] = 1;
          }
        }
        iMask ^= pSeg->side;
        pPrev = pSeg;
      }
    }
    GEODEBUG(("%s %d.%d C=%g B=%g\n",
      pThisEvent->eType ? "RM " : "ADD",
      pThisEvent->pSeg->side, pThisEvent->pSeg->idx,
      pThisEvent->pSeg->C,
      pThisEvent->pSeg->B));
    if( pThisEvent->eType==0 ){
      /* Add a segment */
      pSeg = pThisEvent->pSeg;
      pSeg->y = pSeg->y0;
      pSeg->pNext = pActive;
      pActive = pSeg;
      needSort = 1;
    }else{
      /* Remove a segment */
      if( pActive==pThisEvent->pSeg ){
        pActive = pActive->pNext;
      }else{
        for(pSeg=pActive; pSeg; pSeg=pSeg->pNext){
          if( pSeg->pNext==pThisEvent->pSeg ){
            pSeg->pNext = pSeg->pNext->pNext;
            break;
          }
        }
      }
    }
    pThisEvent = pThisEvent->pNext;
  }
  if( aOverlap[3]==0 ){
    rc = 0;
  }else if( aOverlap[1]!=0 && aOverlap[2]==0 ){
    rc = 3;
  }else if( aOverlap[1]==0 && aOverlap[2]!=0 ){
    rc = 2;
  }else if( aOverlap[1]==0 && aOverlap[2]==0 ){
    rc = 4;
  }else{
    rc = 1;
  }

geopolyOverlapDone:
  sqlite3_free(p);
  return rc;
}

/*
** SQL function:    geopoly_overlap(P1,P2)
**
** Determine whether or not P1 and P2 overlap. Return value:
**
**   0     The two polygons are disjoint
**   1     They overlap
**   2     P1 is completely contained within P2
**   3     P2 is completely contained within P1
**   4     P1 and P2 are the same polygon
**   NULL  Either P1 or P2 or both are not valid polygons
*/
static void geopolyOverlapFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  GeoPoly *p1 = geopolyFuncParam(context, argv[0]);
  GeoPoly *p2 = geopolyFuncParam(context, argv[1]);
  if( p1 && p2 ){
    int x = geopolyOverlap(p1, p2);
    if( x<0 ){
      sqlite3_result_error_nomem(context);
    }else{
      sqlite3_result_int(context, x);
    }
  }
  sqlite3_free(p1);
  sqlite3_free(p2);
}

/*
** Enable or disable debugging output
*/
static void geopolyDebugFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
#ifdef GEOPOLY_ENABLE_DEBUG
  geo_debug = sqlite3_value_int(argv[0]);
#endif
}

static int sqlite3_geopoly_init(sqlite3 *db){
  int rc = SQLITE_OK;
  static const struct {
    void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
    int nArg;
    const char *zName;
  } aFunc[] = {
     { geopolyAreaFunc,          1,    "geopoly_area"     },
     { geopolyBlobFunc,          1,    "geopoly_blob"     },
     { geopolyJsonFunc,          1,    "geopoly_json"     },
     { geopolySvgFunc,          -1,    "geopoly_svg"      },
     { geopolyWithinFunc,        3,    "geopoly_within"   },
     { geopolyOverlapFunc,       2,    "geopoly_overlap"  },
     { geopolyDebugFunc,         1,    "geopoly_debug"    },
  };
  int i;
  for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){
    rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg,
                                 SQLITE_UTF8, 0,
                                 aFunc[i].xFunc, 0, 0);
  }
  return rc;
}

Changes to ext/rtree/rtree.c.

4218
4219
4220
4221
4222
4223
4224




4225
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4231
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4252
4253





4254
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4256
4257
4258
4259
4260
    }else{
      sqlite3_result_error_code(ctx, rc);
    }
    sqlite3_free(zReport);
  }
}






/*
** Register the r-tree module with database handle db. This creates the
** virtual table module "rtree" and the debugging/analysis scalar 
** function "rtreenode".
*/
int sqlite3RtreeInit(sqlite3 *db){
................................................................................
#endif
    rc = sqlite3_create_module_v2(db, "rtree", &rtreeModule, c, 0);
  }
  if( rc==SQLITE_OK ){
    void *c = (void *)RTREE_COORD_INT32;
    rc = sqlite3_create_module_v2(db, "rtree_i32", &rtreeModule, c, 0);
  }






  return rc;
}

/*
** This routine deletes the RtreeGeomCallback object that was attached
** one of the SQL functions create by sqlite3_rtree_geometry_callback()







>
>
>
>







 







>
>
>
>
>







4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
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4230
4231
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4234
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....
4251
4252
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4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
    }else{
      sqlite3_result_error_code(ctx, rc);
    }
    sqlite3_free(zReport);
  }
}

/* Conditionally include the geopoly code */
#ifdef SQLITE_ENABLE_GEOPOLY
# include "geopoly.c"
#endif

/*
** Register the r-tree module with database handle db. This creates the
** virtual table module "rtree" and the debugging/analysis scalar 
** function "rtreenode".
*/
int sqlite3RtreeInit(sqlite3 *db){
................................................................................
#endif
    rc = sqlite3_create_module_v2(db, "rtree", &rtreeModule, c, 0);
  }
  if( rc==SQLITE_OK ){
    void *c = (void *)RTREE_COORD_INT32;
    rc = sqlite3_create_module_v2(db, "rtree_i32", &rtreeModule, c, 0);
  }
#ifdef SQLITE_ENABLE_GEOPOLY
  if( rc==SQLITE_OK ){
    rc = sqlite3_geopoly_init(db);
  }
#endif

  return rc;
}

/*
** This routine deletes the RtreeGeomCallback object that was attached
** one of the SQL functions create by sqlite3_rtree_geometry_callback()

Changes to main.mk.

224
225
226
227
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229
230
231

232
233
234
235
236
237
238
...
469
470
471
472
473
474
475
476

477
478
479
480
481
482
483
  $(TOP)/ext/fts3/fts3_write.c
SRC += \
  $(TOP)/ext/icu/sqliteicu.h \
  $(TOP)/ext/icu/icu.c
SRC += \
  $(TOP)/ext/rtree/sqlite3rtree.h \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/rtree.c

SRC += \
  $(TOP)/ext/session/sqlite3session.c \
  $(TOP)/ext/session/sqlite3session.h
SRC += \
  $(TOP)/ext/userauth/userauth.c \
  $(TOP)/ext/userauth/sqlite3userauth.h 
SRC += \
................................................................................
  $(TOP)/ext/fts2/fts2_tokenizer.h
EXTHDR += \
  $(TOP)/ext/fts3/fts3.h \
  $(TOP)/ext/fts3/fts3Int.h \
  $(TOP)/ext/fts3/fts3_hash.h \
  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h

EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/fts5/fts5Int.h  \
  fts5parse.h                \
  $(TOP)/ext/fts5/fts5.h 
EXTHDR += \







|
>







 







|
>







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234
235
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237
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239
...
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
  $(TOP)/ext/fts3/fts3_write.c
SRC += \
  $(TOP)/ext/icu/sqliteicu.h \
  $(TOP)/ext/icu/icu.c
SRC += \
  $(TOP)/ext/rtree/sqlite3rtree.h \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/rtree.c \
  $(TOP)/ext/rtree/geopoly.c
SRC += \
  $(TOP)/ext/session/sqlite3session.c \
  $(TOP)/ext/session/sqlite3session.h
SRC += \
  $(TOP)/ext/userauth/userauth.c \
  $(TOP)/ext/userauth/sqlite3userauth.h 
SRC += \
................................................................................
  $(TOP)/ext/fts2/fts2_tokenizer.h
EXTHDR += \
  $(TOP)/ext/fts3/fts3.h \
  $(TOP)/ext/fts3/fts3Int.h \
  $(TOP)/ext/fts3/fts3_hash.h \
  $(TOP)/ext/fts3/fts3_tokenizer.h
EXTHDR += \
  $(TOP)/ext/rtree/rtree.h \
  $(TOP)/ext/rtree/geopoly.c
EXTHDR += \
  $(TOP)/ext/icu/sqliteicu.h
EXTHDR += \
  $(TOP)/ext/fts5/fts5Int.h  \
  fts5parse.h                \
  $(TOP)/ext/fts5/fts5.h 
EXTHDR += \

Changes to tool/mksqlite3c.tcl.

95
96
97
98
99
100
101

102
103
104
105
106
107
108
...
387
388
389
390
391
392
393

394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
foreach hdr {
   btree.h
   btreeInt.h
   fts3.h
   fts3Int.h
   fts3_hash.h
   fts3_tokenizer.h

   hash.h
   hwtime.h
   keywordhash.h
   msvc.h
   mutex.h
   opcodes.h
   os_common.h
................................................................................
   fts3_tokenizer1.c
   fts3_tokenize_vtab.c
   fts3_write.c
   fts3_snippet.c
   fts3_unicode.c
   fts3_unicode2.c


   rtree.c
   icu.c
   fts3_icu.c
   sqlite3rbu.c
   dbstat.c
   dbpage.c
   sqlite3session.c
   json1.c
   fts5.c
   stmt.c
} {
  copy_file tsrc/$file
}

# Synthesize an alternative sqlite3_sourceid() implementation that







>







 







>







<







95
96
97
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99
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...
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400
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402

403
404
405
406
407
408
409
foreach hdr {
   btree.h
   btreeInt.h
   fts3.h
   fts3Int.h
   fts3_hash.h
   fts3_tokenizer.h
   geopoly.c
   hash.h
   hwtime.h
   keywordhash.h
   msvc.h
   mutex.h
   opcodes.h
   os_common.h
................................................................................
   fts3_tokenizer1.c
   fts3_tokenize_vtab.c
   fts3_write.c
   fts3_snippet.c
   fts3_unicode.c
   fts3_unicode2.c

   json1.c
   rtree.c
   icu.c
   fts3_icu.c
   sqlite3rbu.c
   dbstat.c
   dbpage.c
   sqlite3session.c

   fts5.c
   stmt.c
} {
  copy_file tsrc/$file
}

# Synthesize an alternative sqlite3_sourceid() implementation that