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authorCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
committerCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
commit05dedace84ef8c93fea5309c3ac55f889011429b (patch)
tree4c7f513afbbc03060039a165d1770e11be711773 /src/interfaces/libpq/fe-exec.c
parentd84fe82230c593f3dc5d7f427849b99d1efa8a0a (diff)
This commit was manufactured by cvs2git to create branch 'ecpg_big_bison'.
Sprout from master 2002-06-20 20:29:54 UTC Bruce Momjian <bruce@momjian.us> 'Update copyright to 2002.' 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src/include/storage/buf.h src/include/storage/buf_internals.h src/include/storage/buffile.h src/include/storage/bufmgr.h src/include/storage/bufpage.h src/include/storage/fd.h src/include/storage/freespace.h src/include/storage/ipc.h src/include/storage/item.h src/include/storage/itemid.h src/include/storage/itempos.h src/include/storage/itemptr.h src/include/storage/large_object.h src/include/storage/lmgr.h src/include/storage/lock.h src/include/storage/lwlock.h src/include/storage/off.h src/include/storage/page.h src/include/storage/pg_sema.h src/include/storage/pg_shmem.h src/include/storage/pmsignal.h src/include/storage/pos.h src/include/storage/proc.h src/include/storage/relfilenode.h src/include/storage/s_lock.h src/include/storage/shmem.h src/include/storage/sinval.h src/include/storage/sinvaladt.h src/include/storage/smgr.h src/include/storage/spin.h src/include/strdup.h src/include/tcop/dest.h src/include/tcop/fastpath.h src/include/tcop/pquery.h src/include/tcop/tcopdebug.h src/include/tcop/tcopprot.h src/include/tcop/utility.h src/include/utils/acl.h src/include/utils/array.h src/include/utils/ascii.h src/include/utils/bit.h src/include/utils/builtins.h src/include/utils/cash.h src/include/utils/catcache.h src/include/utils/date.h src/include/utils/datetime.h src/include/utils/datum.h src/include/utils/dynahash.h src/include/utils/dynamic_loader.h src/include/utils/elog.h src/include/utils/exc.h src/include/utils/excid.h src/include/utils/fcache.h src/include/utils/fmgrtab.h src/include/utils/formatting.h src/include/utils/geo_decls.h src/include/utils/guc.h src/include/utils/hsearch.h src/include/utils/inet.h src/include/utils/int8.h src/include/utils/inval.h src/include/utils/logtape.h src/include/utils/lsyscache.h src/include/utils/memutils.h src/include/utils/nabstime.h src/include/utils/numeric.h src/include/utils/palloc.h src/include/utils/pg_crc.h src/include/utils/pg_locale.h src/include/utils/pg_lzcompress.h src/include/utils/portal.h src/include/utils/ps_status.h src/include/utils/rel.h src/include/utils/relcache.h src/include/utils/selfuncs.h src/include/utils/sets.h src/include/utils/syscache.h src/include/utils/timestamp.h src/include/utils/tqual.h src/include/utils/tuplesort.h src/include/utils/tuplestore.h src/include/utils/varbit.h src/interfaces/Makefile src/interfaces/cli/example1.c src/interfaces/cli/example2.c src/interfaces/cli/sqlcli.h src/interfaces/jdbc/CHANGELOG src/interfaces/jdbc/Implementation src/interfaces/jdbc/Makefile src/interfaces/jdbc/README src/interfaces/jdbc/build.xml src/interfaces/jdbc/example/ImageViewer.java src/interfaces/jdbc/example/Unicode.java src/interfaces/jdbc/example/basic.java src/interfaces/jdbc/example/blobtest.java src/interfaces/jdbc/example/corba/StockClient.java src/interfaces/jdbc/example/corba/StockDB.java src/interfaces/jdbc/example/corba/StockDispenserImpl.java src/interfaces/jdbc/example/corba/StockItemImpl.java src/interfaces/jdbc/example/corba/StockServer.java src/interfaces/jdbc/example/corba/readme src/interfaces/jdbc/example/corba/stock.idl src/interfaces/jdbc/example/corba/stock.sql src/interfaces/jdbc/example/datestyle.java src/interfaces/jdbc/example/metadata.java src/interfaces/jdbc/example/psql.java src/interfaces/jdbc/example/threadsafe.java src/interfaces/jdbc/jdbc.jpx src/interfaces/jdbc/org/postgresql/Connection.java src/interfaces/jdbc/org/postgresql/Driver.java.in src/interfaces/jdbc/org/postgresql/Field.java src/interfaces/jdbc/org/postgresql/PG_Stream.java src/interfaces/jdbc/org/postgresql/PostgresqlDataSource.java src/interfaces/jdbc/org/postgresql/ResultSet.java src/interfaces/jdbc/org/postgresql/Statement.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim1.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim2.java src/interfaces/jdbc/org/postgresql/core/Encoding.java src/interfaces/jdbc/org/postgresql/core/MemoryPool.java src/interfaces/jdbc/org/postgresql/core/ObjectPool.java src/interfaces/jdbc/org/postgresql/core/QueryExecutor.java src/interfaces/jdbc/org/postgresql/core/SimpleObjectPool.java src/interfaces/jdbc/org/postgresql/core/StartupPacket.java src/interfaces/jdbc/org/postgresql/errors.properties src/interfaces/jdbc/org/postgresql/errors_de.properties src/interfaces/jdbc/org/postgresql/errors_fr.properties src/interfaces/jdbc/org/postgresql/errors_it.properties src/interfaces/jdbc/org/postgresql/errors_nl.properties src/interfaces/jdbc/org/postgresql/errors_zh_TW.properties src/interfaces/jdbc/org/postgresql/fastpath/Fastpath.java src/interfaces/jdbc/org/postgresql/fastpath/FastpathArg.java src/interfaces/jdbc/org/postgresql/geometric/PGbox.java src/interfaces/jdbc/org/postgresql/geometric/PGcircle.java src/interfaces/jdbc/org/postgresql/geometric/PGline.java src/interfaces/jdbc/org/postgresql/geometric/PGlseg.java src/interfaces/jdbc/org/postgresql/geometric/PGpath.java src/interfaces/jdbc/org/postgresql/geometric/PGpoint.java src/interfaces/jdbc/org/postgresql/geometric/PGpolygon.java src/interfaces/jdbc/org/postgresql/jdbc1/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java src/interfaces/jdbc/org/postgresql/jdbc1/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/Array.java src/interfaces/jdbc/org/postgresql/jdbc2/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/Connection.java src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/PBatchUpdateException.java src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/UpdateableResultSet.java src/interfaces/jdbc/org/postgresql/largeobject/BlobInputStream.java src/interfaces/jdbc/org/postgresql/largeobject/BlobOutputStream.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObject.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObjectManager.java src/interfaces/jdbc/org/postgresql/largeobject/PGblob.java src/interfaces/jdbc/org/postgresql/largeobject/PGclob.java src/interfaces/jdbc/org/postgresql/test/JDBC2Tests.java src/interfaces/jdbc/org/postgresql/test/README src/interfaces/jdbc/org/postgresql/test/jdbc2/ANTTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BlobTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ConnectionTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DatabaseMetaDataTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DateTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DriverTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/EncodingTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/JBuilderTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/MiscTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ResultSetTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimeTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimestampTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/UpdateableResultTest.java src/interfaces/jdbc/org/postgresql/util/MD5Digest.java src/interfaces/jdbc/org/postgresql/util/MessageTranslator.java src/interfaces/jdbc/org/postgresql/util/PGbytea.java src/interfaces/jdbc/org/postgresql/util/PGmoney.java src/interfaces/jdbc/org/postgresql/util/PGobject.java src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java src/interfaces/jdbc/org/postgresql/util/PSQLException.java src/interfaces/jdbc/org/postgresql/util/Serialize.java src/interfaces/jdbc/org/postgresql/util/UnixCrypt.java src/interfaces/jdbc/org/postgresql/xa/ClientConnection.java src/interfaces/jdbc/org/postgresql/xa/TwoPhaseConnection.java src/interfaces/jdbc/org/postgresql/xa/TxConnection.java src/interfaces/jdbc/org/postgresql/xa/XAConnectionImpl.java src/interfaces/jdbc/org/postgresql/xa/XADataSourceImpl.java src/interfaces/jdbc/utils/CheckVersion.java src/interfaces/jdbc/utils/buildDriver src/interfaces/jdbc/utils/changelog.pl src/interfaces/libpgeasy/Makefile src/interfaces/libpgeasy/README src/interfaces/libpgeasy/examples/Makefile src/interfaces/libpgeasy/examples/pginsert.c src/interfaces/libpgeasy/examples/pgmultiresult.c src/interfaces/libpgeasy/examples/pgnulltest.c src/interfaces/libpgeasy/examples/pgwordcount.c src/interfaces/libpgeasy/halt.c src/interfaces/libpgeasy/halt.h src/interfaces/libpgeasy/libpgeasy.c src/interfaces/libpgeasy/libpgeasy.h src/interfaces/libpgtcl/Makefile src/interfaces/libpgtcl/README 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src/interfaces/libpq/ru.po src/interfaces/libpq/sv.po src/interfaces/libpq/win32.c src/interfaces/libpq/win32.h src/interfaces/libpq/win32.mak src/interfaces/libpq/zh_CN.po src/interfaces/libpq/zh_TW.po src/interfaces/libpq++/CHANGES src/interfaces/libpq++/Makefile src/interfaces/libpq++/README src/interfaces/libpq++/TODO src/interfaces/libpq++/examples/Makefile src/interfaces/libpq++/examples/testlibpq0.cc src/interfaces/libpq++/examples/testlibpq1.cc src/interfaces/libpq++/examples/testlibpq2.cc src/interfaces/libpq++/examples/testlibpq2.sql src/interfaces/libpq++/examples/testlibpq3.cc src/interfaces/libpq++/examples/testlibpq3.sql src/interfaces/libpq++/examples/testlibpq4.cc src/interfaces/libpq++/examples/testlibpq4.sql src/interfaces/libpq++/examples/testlibpq5.cc src/interfaces/libpq++/examples/testlibpq5.sql src/interfaces/libpq++/examples/testlibpq6.cc src/interfaces/libpq++/examples/testlo.cc src/interfaces/libpq++/libpq++.h src/interfaces/libpq++/libpq++dll.rc src/interfaces/libpq++/pgconnection.cc src/interfaces/libpq++/pgconnection.h src/interfaces/libpq++/pgcursordb.cc src/interfaces/libpq++/pgcursordb.h src/interfaces/libpq++/pgdatabase.cc src/interfaces/libpq++/pgdatabase.h src/interfaces/libpq++/pglobject.cc src/interfaces/libpq++/pglobject.h src/interfaces/libpq++/pgtransdb.cc src/interfaces/libpq++/pgtransdb.h src/interfaces/libpq++/win32.mak src/interfaces/odbc/GNUmakefile src/interfaces/odbc/bind.c src/interfaces/odbc/bind.h src/interfaces/odbc/columninfo.c src/interfaces/odbc/columninfo.h src/interfaces/odbc/connection.c src/interfaces/odbc/connection.h src/interfaces/odbc/convert.c src/interfaces/odbc/convert.h src/interfaces/odbc/descriptor.h src/interfaces/odbc/dlg_specific.c src/interfaces/odbc/dlg_specific.h src/interfaces/odbc/dlg_wingui.c src/interfaces/odbc/drvconn.c src/interfaces/odbc/environ.c src/interfaces/odbc/environ.h src/interfaces/odbc/execute.c src/interfaces/odbc/gpps.c src/interfaces/odbc/gpps.h src/interfaces/odbc/info.c src/interfaces/odbc/info30.c src/interfaces/odbc/iodbc.h src/interfaces/odbc/isql.h src/interfaces/odbc/isqlext.h src/interfaces/odbc/license.txt src/interfaces/odbc/lobj.c src/interfaces/odbc/lobj.h src/interfaces/odbc/md5.c src/interfaces/odbc/md5.h src/interfaces/odbc/misc.c src/interfaces/odbc/misc.h src/interfaces/odbc/multibyte.c src/interfaces/odbc/multibyte.h src/interfaces/odbc/notice.txt src/interfaces/odbc/odbc.sql src/interfaces/odbc/odbcapi.c src/interfaces/odbc/odbcapi25w.c src/interfaces/odbc/odbcapi30.c src/interfaces/odbc/odbcapi30w.c src/interfaces/odbc/odbcapiw.c src/interfaces/odbc/odbcinst.ini src/interfaces/odbc/options.c src/interfaces/odbc/parse.c src/interfaces/odbc/pgapi30.c src/interfaces/odbc/pgapifunc.h src/interfaces/odbc/pgtypes.c src/interfaces/odbc/pgtypes.h src/interfaces/odbc/psqlodbc.c src/interfaces/odbc/psqlodbc.h src/interfaces/odbc/psqlodbc.rc src/interfaces/odbc/psqlodbc.reg src/interfaces/odbc/psqlodbc30.reg src/interfaces/odbc/psqlodbc30w.reg src/interfaces/odbc/psqlodbc_api30.def src/interfaces/odbc/psqlodbc_api30w.def src/interfaces/odbc/psqlodbc_apiw.def src/interfaces/odbc/psqlodbc_win32.def src/interfaces/odbc/qresult.c src/interfaces/odbc/qresult.h src/interfaces/odbc/readme.txt src/interfaces/odbc/resource.h src/interfaces/odbc/results.c src/interfaces/odbc/setup.c src/interfaces/odbc/setup.rul src/interfaces/odbc/socket.c src/interfaces/odbc/socket.h src/interfaces/odbc/statement.c src/interfaces/odbc/statement.h src/interfaces/odbc/tuple.c src/interfaces/odbc/tuple.h src/interfaces/odbc/tuplelist.c src/interfaces/odbc/tuplelist.h src/interfaces/odbc/version.h src/interfaces/odbc/win32.mak src/interfaces/odbc/win32_30.mak src/interfaces/odbc/win32_30w.mak src/interfaces/odbc/win32w.mak src/interfaces/odbc/win_md5.c src/interfaces/odbc/win_setup.h src/interfaces/odbc/win_unicode.c src/interfaces/perl5/Changes src/interfaces/perl5/GNUmakefile src/interfaces/perl5/MANIFEST src/interfaces/perl5/Makefile.PL src/interfaces/perl5/Pg.pm src/interfaces/perl5/Pg.xs src/interfaces/perl5/README src/interfaces/perl5/examples/ApachePg.pl src/interfaces/perl5/examples/example.newstyle src/interfaces/perl5/examples/example.oldstyle src/interfaces/perl5/ppport.h src/interfaces/perl5/test.pl src/interfaces/perl5/typemap src/interfaces/python/Announce src/interfaces/python/ChangeLog src/interfaces/python/GNUmakefile src/interfaces/python/PyGreSQL.spec src/interfaces/python/README src/interfaces/python/README.linux src/interfaces/python/Setup.in.raw src/interfaces/python/pg.py src/interfaces/python/pgdb.py src/interfaces/python/pgmodule.c src/interfaces/python/setup.py src/interfaces/python/tutorial/advanced.py src/interfaces/python/tutorial/basics.py src/interfaces/python/tutorial/func.py src/interfaces/python/tutorial/syscat.py src/interfaces/ssl/client.conf src/interfaces/ssl/mkcert.sh src/interfaces/ssl/pgkeygen.sh src/interfaces/ssl/root.conf src/interfaces/ssl/server.conf src/makefiles/Makefile.aix src/makefiles/Makefile.beos src/makefiles/Makefile.bsdi src/makefiles/Makefile.darwin src/makefiles/Makefile.dgux src/makefiles/Makefile.freebsd src/makefiles/Makefile.hpux src/makefiles/Makefile.irix5 src/makefiles/Makefile.linux src/makefiles/Makefile.netbsd src/makefiles/Makefile.openbsd src/makefiles/Makefile.osf src/makefiles/Makefile.qnx4 src/makefiles/Makefile.sco src/makefiles/Makefile.solaris src/makefiles/Makefile.sunos4 src/makefiles/Makefile.svr4 src/makefiles/Makefile.ultrix4 src/makefiles/Makefile.univel src/makefiles/Makefile.unixware src/makefiles/Makefile.win src/nls-global.mk src/pl/Makefile src/pl/plperl/GNUmakefile src/pl/plperl/README src/pl/plperl/SPI.xs src/pl/plperl/eloglvl.c src/pl/plperl/eloglvl.h src/pl/plperl/plperl.c src/pl/plperl/ppport.h src/pl/plpgsql/Makefile src/pl/plpgsql/src/.cvsignore src/pl/plpgsql/src/INSTALL src/pl/plpgsql/src/Makefile src/pl/plpgsql/src/gram.y src/pl/plpgsql/src/pl_comp.c 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src/test/bench/query01 src/test/bench/query02 src/test/bench/query03 src/test/bench/query04 src/test/bench/query05 src/test/bench/query06 src/test/bench/query07 src/test/bench/query08 src/test/bench/query09 src/test/bench/query10 src/test/bench/query11 src/test/bench/query12 src/test/bench/query13 src/test/bench/query14 src/test/bench/query15 src/test/bench/query16 src/test/bench/query17 src/test/bench/query18 src/test/bench/query19 src/test/bench/query20 src/test/bench/query21 src/test/bench/query22 src/test/bench/query23 src/test/bench/query24 src/test/bench/query25 src/test/bench/query26 src/test/bench/query27 src/test/bench/query28 src/test/bench/query29 src/test/bench/query30 src/test/bench/query31 src/test/bench/query32 src/test/bench/runwisc.sh src/test/bench/wholebench.sh src/test/examples/Makefile src/test/examples/testlibpq.c src/test/examples/testlibpq2.c src/test/examples/testlibpq2.sql src/test/examples/testlibpq3.c src/test/examples/testlibpq3.sql src/test/examples/testlibpq4.c src/test/examples/testlo.c src/test/locale/Makefile src/test/locale/README src/test/locale/de_DE.ISO8859-1/Makefile src/test/locale/de_DE.ISO8859-1/README src/test/locale/de_DE.ISO8859-1/expected/de-ctype.out src/test/locale/de_DE.ISO8859-1/expected/test-de-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-select.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-sort.out src/test/locale/de_DE.ISO8859-1/expected/test-de-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-varchar.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-varchar.sql.out src/test/locale/de_DE.ISO8859-1/runall src/test/locale/de_DE.ISO8859-1/test-de-select.sql.in src/test/locale/de_DE.ISO8859-1/test-de-sort.in src/test/locale/de_DE.ISO8859-1/test-de-upper.sql.in src/test/locale/de_DE.ISO8859-1/test-de.sql.in src/test/locale/gr_GR.ISO8859-7/Makefile src/test/locale/gr_GR.ISO8859-7/README src/test/locale/gr_GR.ISO8859-7/expected/gr-ctype.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-char.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-select.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-sort.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-text.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-varchar.sql.out src/test/locale/gr_GR.ISO8859-7/runall src/test/locale/gr_GR.ISO8859-7/test-gr-select.sql.in src/test/locale/gr_GR.ISO8859-7/test-gr-sort.in src/test/locale/gr_GR.ISO8859-7/test-gr.sql.in src/test/locale/koi8-r/Makefile src/test/locale/koi8-r/expected/koi8-ctype.out src/test/locale/koi8-r/expected/test-koi8-char.sql.out src/test/locale/koi8-r/expected/test-koi8-select.sql.out src/test/locale/koi8-r/expected/test-koi8-sort.out src/test/locale/koi8-r/expected/test-koi8-text.sql.out src/test/locale/koi8-r/expected/test-koi8-varchar.sql.out src/test/locale/koi8-r/runall src/test/locale/koi8-r/test-koi8-select.sql.in src/test/locale/koi8-r/test-koi8-sort.in src/test/locale/koi8-r/test-koi8.sql.in src/test/locale/koi8-to-win1251/Makefile src/test/locale/koi8-to-win1251/README src/test/locale/koi8-to-win1251/expected/test-koi8-char.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-select.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-sort.out src/test/locale/koi8-to-win1251/expected/test-koi8-text.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-varchar.sql.out src/test/locale/koi8-to-win1251/runall src/test/locale/koi8-to-win1251/test-koi8-select.sql.in src/test/locale/koi8-to-win1251/test-koi8-sort.in src/test/locale/koi8-to-win1251/test-koi8.sql.in src/test/locale/sort-test.pl src/test/locale/sort-test.py src/test/locale/test-ctype.c src/test/locale/test-pgsql-locale.c src/test/mb/README src/test/mb/expected/big5.out src/test/mb/expected/euc_cn.out src/test/mb/expected/euc_jp.out src/test/mb/expected/euc_kr.out src/test/mb/expected/euc_tw.out src/test/mb/expected/mule_internal.out src/test/mb/expected/sjis.out src/test/mb/expected/unicode.out src/test/mb/mbregress.sh src/test/mb/sql/big5.sql src/test/mb/sql/euc_cn.sql src/test/mb/sql/euc_jp.sql src/test/mb/sql/euc_kr.sql src/test/mb/sql/euc_tw.sql src/test/mb/sql/mule_internal.sql src/test/mb/sql/sjis.sql src/test/mb/sql/unicode.sql src/test/performance/results/PgSQL.970926 src/test/performance/runtests.pl src/test/performance/sqls/connection src/test/performance/sqls/crtsimple src/test/performance/sqls/crtsimpleidx src/test/performance/sqls/drpsimple src/test/performance/sqls/inssimple src/test/performance/sqls/inssimple.data src/test/performance/sqls/orbsimple src/test/performance/sqls/slcsimple src/test/performance/sqls/slcsimple.data src/test/performance/sqls/vacuum src/test/performance/start-pgsql.sh src/test/regress/GNUmakefile src/test/regress/Makefile src/test/regress/README src/test/regress/data/agg.data src/test/regress/data/constrf.data src/test/regress/data/constro.data src/test/regress/data/dept.data src/test/regress/data/desc.data src/test/regress/data/emp.data src/test/regress/data/hash.data src/test/regress/data/onek.data src/test/regress/data/person.data src/test/regress/data/real_city.data src/test/regress/data/rect.data src/test/regress/data/streets.data src/test/regress/data/stud_emp.data src/test/regress/data/student.data src/test/regress/data/tenk.data src/test/regress/expected/abstime-solaris-1947.out src/test/regress/expected/abstime.out src/test/regress/expected/aggregates.out src/test/regress/expected/alter_table.out src/test/regress/expected/arrays.out src/test/regress/expected/bit.out src/test/regress/expected/boolean.out src/test/regress/expected/box.out src/test/regress/expected/btree_index.out src/test/regress/expected/case.out src/test/regress/expected/char.out src/test/regress/expected/char_1.out src/test/regress/expected/circle.out src/test/regress/expected/comments.out src/test/regress/expected/create_aggregate.out src/test/regress/expected/create_index.out src/test/regress/expected/create_misc.out src/test/regress/expected/create_operator.out src/test/regress/expected/create_table.out src/test/regress/expected/create_type.out src/test/regress/expected/create_view.out src/test/regress/expected/date.out src/test/regress/expected/domain.out src/test/regress/expected/errors.out src/test/regress/expected/euc_cn.out src/test/regress/expected/euc_jp.out src/test/regress/expected/euc_kr.out src/test/regress/expected/euc_tw.out src/test/regress/expected/float4-exp-three-digits.out src/test/regress/expected/float4.out src/test/regress/expected/float8-exp-three-digits.out src/test/regress/expected/float8-fp-exception.out src/test/regress/expected/float8-small-is-zero.out src/test/regress/expected/float8.out src/test/regress/expected/foreign_key.out src/test/regress/expected/geometry-alpha-precision.out src/test/regress/expected/geometry-bsdi-precision.out src/test/regress/expected/geometry-i86-gnulibc.out src/test/regress/expected/geometry-intel-beos.out src/test/regress/expected/geometry-irix.out src/test/regress/expected/geometry-positive-zeros-bsd.out src/test/regress/expected/geometry-positive-zeros.out src/test/regress/expected/geometry-powerpc-aix4.out src/test/regress/expected/geometry-powerpc-darwin.out src/test/regress/expected/geometry-powerpc-linux-gnulibc1.out src/test/regress/expected/geometry-solaris-i386-pc.out src/test/regress/expected/geometry-solaris-precision.out src/test/regress/expected/geometry-uw7-cc.out src/test/regress/expected/geometry-uw7-gcc.out src/test/regress/expected/geometry.out src/test/regress/expected/hash_index.out src/test/regress/expected/horology-no-DST-before-1970.out src/test/regress/expected/horology-solaris-1947.out src/test/regress/expected/horology.out src/test/regress/expected/inet.out src/test/regress/expected/inherit.out src/test/regress/expected/insert.out src/test/regress/expected/int2.out src/test/regress/expected/int4.out src/test/regress/expected/int8-exp-three-digits.out src/test/regress/expected/int8.out src/test/regress/expected/interval.out src/test/regress/expected/join.out src/test/regress/expected/limit.out src/test/regress/expected/lseg.out src/test/regress/expected/mule_internal.out src/test/regress/expected/name.out src/test/regress/expected/numeric.out src/test/regress/expected/numeric_big.out src/test/regress/expected/numerology.out src/test/regress/expected/oid.out src/test/regress/expected/oidjoins.out src/test/regress/expected/opr_sanity.out src/test/regress/expected/path.out src/test/regress/expected/plpgsql.out src/test/regress/expected/point.out src/test/regress/expected/polygon.out src/test/regress/expected/portals.out src/test/regress/expected/portals_p2.out src/test/regress/expected/privileges.out src/test/regress/expected/random.out src/test/regress/expected/reltime.out src/test/regress/expected/rules.out src/test/regress/expected/sanity_check.out src/test/regress/expected/select.out src/test/regress/expected/select_distinct.out src/test/regress/expected/select_distinct_on.out src/test/regress/expected/select_having.out src/test/regress/expected/select_having_1.out src/test/regress/expected/select_implicit.out src/test/regress/expected/select_implicit_1.out src/test/regress/expected/select_into.out src/test/regress/expected/select_views.out src/test/regress/expected/select_views_1.out src/test/regress/expected/sql_ascii.out src/test/regress/expected/strings.out src/test/regress/expected/subselect.out src/test/regress/expected/temp.out src/test/regress/expected/text.out src/test/regress/expected/time.out src/test/regress/expected/timestamp.out src/test/regress/expected/timestamptz.out src/test/regress/expected/timetz.out src/test/regress/expected/tinterval-solaris-1947.out src/test/regress/expected/tinterval.out src/test/regress/expected/transactions.out src/test/regress/expected/triggers.out src/test/regress/expected/type_sanity.out src/test/regress/expected/union.out src/test/regress/expected/varchar.out src/test/regress/expected/varchar_1.out src/test/regress/input/constraints.source src/test/regress/input/copy.source src/test/regress/input/create_function_1.source src/test/regress/input/create_function_2.source src/test/regress/input/misc.source src/test/regress/output/constraints.source src/test/regress/output/copy.source src/test/regress/output/create_function_1.source src/test/regress/output/create_function_2.source src/test/regress/output/misc.source src/test/regress/parallel_schedule src/test/regress/pg_regress.sh src/test/regress/regress.c src/test/regress/regressplans.sh src/test/regress/resultmap src/test/regress/serial_schedule src/test/regress/sql/abstime.sql src/test/regress/sql/aggregates.sql src/test/regress/sql/alter_table.sql src/test/regress/sql/arrays.sql src/test/regress/sql/bit.sql src/test/regress/sql/boolean.sql src/test/regress/sql/box.sql src/test/regress/sql/btree_index.sql src/test/regress/sql/case.sql src/test/regress/sql/char.sql src/test/regress/sql/circle.sql src/test/regress/sql/comments.sql src/test/regress/sql/create_aggregate.sql src/test/regress/sql/create_index.sql src/test/regress/sql/create_misc.sql src/test/regress/sql/create_operator.sql src/test/regress/sql/create_table.sql src/test/regress/sql/create_type.sql src/test/regress/sql/create_view.sql src/test/regress/sql/date.sql src/test/regress/sql/domain.sql src/test/regress/sql/drop.sql src/test/regress/sql/errors.sql src/test/regress/sql/euc_cn.sql src/test/regress/sql/euc_jp.sql src/test/regress/sql/euc_kr.sql src/test/regress/sql/euc_tw.sql src/test/regress/sql/float4.sql src/test/regress/sql/float8.sql src/test/regress/sql/foreign_key.sql src/test/regress/sql/geometry.sql src/test/regress/sql/hash_index.sql src/test/regress/sql/horology.sql src/test/regress/sql/inet.sql src/test/regress/sql/inherit.sql src/test/regress/sql/insert.sql src/test/regress/sql/int2.sql src/test/regress/sql/int4.sql src/test/regress/sql/int8.sql src/test/regress/sql/interval.sql src/test/regress/sql/join.sql src/test/regress/sql/limit.sql src/test/regress/sql/lseg.sql src/test/regress/sql/mule_internal.sql src/test/regress/sql/name.sql src/test/regress/sql/numeric.sql src/test/regress/sql/numeric_big.sql src/test/regress/sql/numerology.sql src/test/regress/sql/oid.sql src/test/regress/sql/oidjoins.sql src/test/regress/sql/opr_sanity.sql src/test/regress/sql/path.sql src/test/regress/sql/plpgsql.sql src/test/regress/sql/point.sql src/test/regress/sql/polygon.sql src/test/regress/sql/portals.sql src/test/regress/sql/portals_p2.sql src/test/regress/sql/privileges.sql src/test/regress/sql/random.sql src/test/regress/sql/reltime.sql src/test/regress/sql/rules.sql src/test/regress/sql/sanity_check.sql src/test/regress/sql/select.sql src/test/regress/sql/select_distinct.sql src/test/regress/sql/select_distinct_on.sql src/test/regress/sql/select_having.sql src/test/regress/sql/select_implicit.sql src/test/regress/sql/select_into.sql src/test/regress/sql/select_views.sql src/test/regress/sql/sql_ascii.sql src/test/regress/sql/strings.sql src/test/regress/sql/subselect.sql src/test/regress/sql/temp.sql src/test/regress/sql/text.sql src/test/regress/sql/time.sql src/test/regress/sql/timestamp.sql src/test/regress/sql/timestamptz.sql src/test/regress/sql/timetz.sql src/test/regress/sql/tinterval.sql src/test/regress/sql/transactions.sql src/test/regress/sql/triggers.sql src/test/regress/sql/type_sanity.sql src/test/regress/sql/union.sql src/test/regress/sql/varchar.sql src/tools/RELEASE_CHANGES src/tools/backend/README src/tools/backend/backend_dirs.html src/tools/backend/flow.fig src/tools/backend/flow.gif src/tools/backend/index.html src/tools/ccsym src/tools/copyright src/tools/entab/Makefile src/tools/entab/entab.c src/tools/entab/entab.man src/tools/entab/halt.c src/tools/find_badmacros src/tools/find_static src/tools/find_typedef src/tools/make_ctags src/tools/make_diff/README src/tools/make_diff/cporig src/tools/make_diff/difforig src/tools/make_diff/rmorig src/tools/make_etags src/tools/make_keywords src/tools/make_mkid src/tools/pgcvslog src/tools/pginclude/README src/tools/pginclude/pgcompinclude src/tools/pginclude/pgdefine src/tools/pginclude/pgfixinclude src/tools/pginclude/pgrminclude src/tools/pgindent/README src/tools/pgindent/indent.bsd.patch src/tools/pgindent/pgcppindent src/tools/pgindent/pgindent src/tools/pgindent/pgjindent src/tutorial/Makefile src/tutorial/README src/tutorial/advanced.source src/tutorial/basics.source src/tutorial/beard.c src/tutorial/complex.c src/tutorial/complex.source src/tutorial/funcs.c src/tutorial/funcs.source src/tutorial/funcs_new.c src/tutorial/syscat.source src/utils/Makefile src/utils/README src/utils/dllinit.c src/utils/getopt.c src/utils/strdup.c src/win32.mak
Diffstat (limited to 'src/interfaces/libpq/fe-exec.c')
-rw-r--r--src/interfaces/libpq/fe-exec.c2451
1 files changed, 0 insertions, 2451 deletions
diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c
deleted file mode 100644
index 3ff32daaeb1..00000000000
--- a/src/interfaces/libpq/fe-exec.c
+++ /dev/null
@@ -1,2451 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * fe-exec.c
- * functions related to sending a query down to the backend
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.120 2002/06/20 20:29:53 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres_fe.h"
-
-#include <errno.h>
-#include <ctype.h>
-#include <fcntl.h>
-
-#include "libpq-fe.h"
-#include "libpq-int.h"
-
-#ifdef WIN32
-#include "win32.h"
-#else
-#include <unistd.h>
-#endif
-
-/* keep this in same order as ExecStatusType in libpq-fe.h */
-char *const pgresStatus[] = {
- "PGRES_EMPTY_QUERY",
- "PGRES_COMMAND_OK",
- "PGRES_TUPLES_OK",
- "PGRES_COPY_OUT",
- "PGRES_COPY_IN",
- "PGRES_BAD_RESPONSE",
- "PGRES_NONFATAL_ERROR",
- "PGRES_FATAL_ERROR"
-};
-
-
-/* Note: DONOTICE macro will work if applied to either PGconn or PGresult */
-#define DONOTICE(conn,message) \
- ((*(conn)->noticeHook) ((conn)->noticeArg, (message)))
-
-
-static void pqCatenateResultError(PGresult *res, const char *msg);
-static void saveErrorResult(PGconn *conn);
-static PGresult *prepareAsyncResult(PGconn *conn);
-static int addTuple(PGresult *res, PGresAttValue * tup);
-static void parseInput(PGconn *conn);
-static void handleSendFailure(PGconn *conn);
-static int getRowDescriptions(PGconn *conn);
-static int getAnotherTuple(PGconn *conn, int binary);
-static int getNotify(PGconn *conn);
-static int getNotice(PGconn *conn);
-
-/* ---------------
- * Escaping arbitrary strings to get valid SQL strings/identifiers.
- *
- * Replaces "\\" with "\\\\" and "'" with "''".
- * length is the length of the buffer pointed to by
- * from. The buffer at to must be at least 2*length + 1 characters
- * long. A terminating NUL character is written.
- * ---------------
- */
-
-size_t
-PQescapeString(char *to, const char *from, size_t length)
-{
- const char *source = from;
- char *target = to;
- unsigned int remaining = length;
-
- while (remaining > 0)
- {
- switch (*source)
- {
- case '\\':
- *target = '\\';
- target++;
- *target = '\\';
- /* target and remaining are updated below. */
- break;
-
- case '\'':
- *target = '\'';
- target++;
- *target = '\'';
- /* target and remaining are updated below. */
- break;
-
- default:
- *target = *source;
- /* target and remaining are updated below. */
- }
- source++;
- target++;
- remaining--;
- }
-
- /* Write the terminating NUL character. */
- *target = '\0';
-
- return target - to;
-}
-
-/*
- * PQescapeBytea - converts from binary string to the
- * minimal encoding necessary to include the string in an SQL
- * INSERT statement with a bytea type column as the target.
- *
- * The following transformations are applied
- * '\0' == ASCII 0 == \\000
- * '\'' == ASCII 39 == \'
- * '\\' == ASCII 92 == \\\\
- * anything >= 0x80 ---> \\ooo (where ooo is an octal expression)
- */
-unsigned char *
-PQescapeBytea(unsigned char *bintext, size_t binlen, size_t *bytealen)
-{
- unsigned char *vp;
- unsigned char *rp;
- unsigned char *result;
- size_t i;
- size_t len;
-
- /*
- * empty string has 1 char ('\0')
- */
- len = 1;
-
- vp = bintext;
- for (i = binlen; i > 0; i--, vp++)
- {
- if (*vp == 0 || *vp >= 0x80)
- len += 5; /* '5' is for '\\ooo' */
- else if (*vp == '\'')
- len += 2;
- else if (*vp == '\\')
- len += 4;
- else
- len++;
- }
-
- rp = result = (unsigned char *) malloc(len);
- if (rp == NULL)
- return NULL;
-
- vp = bintext;
- *bytealen = len;
-
- for (i = binlen; i > 0; i--, vp++)
- {
- if (*vp == 0 || *vp >= 0x80)
- {
- (void)sprintf(rp,"\\\\%03o",*vp);
- rp += 5;
- }
- else if (*vp == '\'')
- {
- rp[0] = '\\';
- rp[1] = '\'';
- rp += 2;
- }
- else if (*vp == '\\')
- {
- rp[0] = '\\';
- rp[1] = '\\';
- rp[2] = '\\';
- rp[3] = '\\';
- rp += 4;
- }
- else
- *rp++ = *vp;
- }
- *rp = '\0';
-
- return result;
-}
-
-/*
- * PQunescapeBytea - converts the null terminated string representation
- * of a bytea, strtext, into binary, filling a buffer. It returns a
- * pointer to the buffer which is NULL on error, and the size of the
- * buffer in retbuflen. The pointer may subsequently be used as an
- * argument to the function free(3). It is the reverse of PQescapeBytea.
- *
- * The following transformations are reversed:
- * '\0' == ASCII 0 == \000
- * '\'' == ASCII 39 == \'
- * '\\' == ASCII 92 == \\
- *
- * States:
- * 0 normal 0->1->2->3->4
- * 1 \ 1->5
- * 2 \0 1->6
- * 3 \00
- * 4 \000
- * 5 \'
- * 6 \\
- */
-unsigned char *
-PQunescapeBytea(unsigned char *strtext, size_t *retbuflen)
-{
- size_t buflen;
- unsigned char *buffer, *sp, *bp;
- unsigned int state=0;
-
- if(strtext == NULL)return NULL;
- buflen = strlen(strtext); /* will shrink, also we discover if strtext */
- buffer = (unsigned char *) malloc(buflen); /* isn't NULL terminated */
- if(buffer == NULL)return NULL;
- for(bp = buffer, sp = strtext; *sp != '\0'; bp++, sp++)
- {
- switch(state)
- {
- case 0:
- if(*sp == '\\')state=1;
- *bp = *sp;
- break;
- case 1:
- if(*sp == '\'') /* state=5 */
- { /* replace \' with 39 */
- bp--;
- *bp = '\'';
- buflen--;
- state=0;
- }
- else if(*sp == '\\') /* state=6 */
- { /* replace \\ with 92 */
- bp--;
- *bp = '\\';
- buflen--;
- state=0;
- }
- else
- {
- if(isdigit(*sp))state=2;
- else state=0;
- *bp = *sp;
- }
- break;
- case 2:
- if(isdigit(*sp))state=3;
- else state=0;
- *bp = *sp;
- break;
- case 3:
- if(isdigit(*sp)) /* state=4 */
- {
- int v;
- bp -= 3;
- sscanf(sp-2, "%03o", &v);
- *bp = v;
- buflen -= 3;
- state=0;
- }
- else
- {
- *bp = *sp;
- state=0;
- }
- break;
- }
- }
- buffer = realloc(buffer,buflen);
- if (buffer == NULL)
- return NULL;
-
- *retbuflen=buflen;
- return buffer;
-}
-
-/* ----------------
- * Space management for PGresult.
- *
- * Formerly, libpq did a separate malloc() for each field of each tuple
- * returned by a query. This was remarkably expensive --- malloc/free
- * consumed a sizable part of the application's runtime. And there is
- * no real need to keep track of the fields separately, since they will
- * all be freed together when the PGresult is released. So now, we grab
- * large blocks of storage from malloc and allocate space for query data
- * within these blocks, using a trivially simple allocator. This reduces
- * the number of malloc/free calls dramatically, and it also avoids
- * fragmentation of the malloc storage arena.
- * The PGresult structure itself is still malloc'd separately. We could
- * combine it with the first allocation block, but that would waste space
- * for the common case that no extra storage is actually needed (that is,
- * the SQL command did not return tuples).
- *
- * We also malloc the top-level array of tuple pointers separately, because
- * we need to be able to enlarge it via realloc, and our trivial space
- * allocator doesn't handle that effectively. (Too bad the FE/BE protocol
- * doesn't tell us up front how many tuples will be returned.)
- * All other subsidiary storage for a PGresult is kept in PGresult_data blocks
- * of size PGRESULT_DATA_BLOCKSIZE. The overhead at the start of each block
- * is just a link to the next one, if any. Free-space management info is
- * kept in the owning PGresult.
- * A query returning a small amount of data will thus require three malloc
- * calls: one for the PGresult, one for the tuples pointer array, and one
- * PGresult_data block.
- *
- * Only the most recently allocated PGresult_data block is a candidate to
- * have more stuff added to it --- any extra space left over in older blocks
- * is wasted. We could be smarter and search the whole chain, but the point
- * here is to be simple and fast. Typical applications do not keep a PGresult
- * around very long anyway, so some wasted space within one is not a problem.
- *
- * Tuning constants for the space allocator are:
- * PGRESULT_DATA_BLOCKSIZE: size of a standard allocation block, in bytes
- * PGRESULT_ALIGN_BOUNDARY: assumed alignment requirement for binary data
- * PGRESULT_SEP_ALLOC_THRESHOLD: objects bigger than this are given separate
- * blocks, instead of being crammed into a regular allocation block.
- * Requirements for correct function are:
- * PGRESULT_ALIGN_BOUNDARY must be a multiple of the alignment requirements
- * of all machine data types. (Currently this is set from configure
- * tests, so it should be OK automatically.)
- * PGRESULT_SEP_ALLOC_THRESHOLD + PGRESULT_BLOCK_OVERHEAD <=
- * PGRESULT_DATA_BLOCKSIZE
- * pqResultAlloc assumes an object smaller than the threshold will fit
- * in a new block.
- * The amount of space wasted at the end of a block could be as much as
- * PGRESULT_SEP_ALLOC_THRESHOLD, so it doesn't pay to make that too large.
- * ----------------
- */
-
-#ifdef MAX
-#undef MAX
-#endif
-#define MAX(a,b) ((a) > (b) ? (a) : (b))
-
-#define PGRESULT_DATA_BLOCKSIZE 2048
-#define PGRESULT_ALIGN_BOUNDARY MAXIMUM_ALIGNOF /* from configure */
-#define PGRESULT_BLOCK_OVERHEAD MAX(sizeof(PGresult_data), PGRESULT_ALIGN_BOUNDARY)
-#define PGRESULT_SEP_ALLOC_THRESHOLD (PGRESULT_DATA_BLOCKSIZE / 2)
-
-
-/*
- * PQmakeEmptyPGresult
- * returns a newly allocated, initialized PGresult with given status.
- * If conn is not NULL and status indicates an error, the conn's
- * errorMessage is copied.
- *
- * Note this is exported --- you wouldn't think an application would need
- * to build its own PGresults, but this has proven useful in both libpgtcl
- * and the Perl5 interface, so maybe it's not so unreasonable.
- */
-
-PGresult *
-PQmakeEmptyPGresult(PGconn *conn, ExecStatusType status)
-{
- PGresult *result;
-
- result = (PGresult *) malloc(sizeof(PGresult));
-
- result->xconn = conn; /* might be NULL */
- result->ntups = 0;
- result->numAttributes = 0;
- result->attDescs = NULL;
- result->tuples = NULL;
- result->tupArrSize = 0;
- result->resultStatus = status;
- result->cmdStatus[0] = '\0';
- result->binary = 0;
- result->errMsg = NULL;
- result->null_field[0] = '\0';
- result->curBlock = NULL;
- result->curOffset = 0;
- result->spaceLeft = 0;
-
- if (conn)
- {
- /* copy connection data we might need for operations on PGresult */
- result->noticeHook = conn->noticeHook;
- result->noticeArg = conn->noticeArg;
- result->client_encoding = conn->client_encoding;
-
- /* consider copying conn's errorMessage */
- switch (status)
- {
- case PGRES_EMPTY_QUERY:
- case PGRES_COMMAND_OK:
- case PGRES_TUPLES_OK:
- case PGRES_COPY_OUT:
- case PGRES_COPY_IN:
- /* non-error cases */
- break;
- default:
- pqSetResultError(result, conn->errorMessage.data);
- break;
- }
- }
- else
- {
- /* defaults... */
- result->noticeHook = NULL;
- result->noticeArg = NULL;
- result->client_encoding = 0; /* should be SQL_ASCII */
- }
-
- return result;
-}
-
-/*
- * pqResultAlloc -
- * Allocate subsidiary storage for a PGresult.
- *
- * nBytes is the amount of space needed for the object.
- * If isBinary is true, we assume that we need to align the object on
- * a machine allocation boundary.
- * If isBinary is false, we assume the object is a char string and can
- * be allocated on any byte boundary.
- */
-void *
-pqResultAlloc(PGresult *res, size_t nBytes, bool isBinary)
-{
- char *space;
- PGresult_data *block;
-
- if (!res)
- return NULL;
-
- if (nBytes <= 0)
- return res->null_field;
-
- /*
- * If alignment is needed, round up the current position to an
- * alignment boundary.
- */
- if (isBinary)
- {
- int offset = res->curOffset % PGRESULT_ALIGN_BOUNDARY;
-
- if (offset)
- {
- res->curOffset += PGRESULT_ALIGN_BOUNDARY - offset;
- res->spaceLeft -= PGRESULT_ALIGN_BOUNDARY - offset;
- }
- }
-
- /* If there's enough space in the current block, no problem. */
- if (nBytes <= (size_t) res->spaceLeft)
- {
- space = res->curBlock->space + res->curOffset;
- res->curOffset += nBytes;
- res->spaceLeft -= nBytes;
- return space;
- }
-
- /*
- * If the requested object is very large, give it its own block; this
- * avoids wasting what might be most of the current block to start a
- * new block. (We'd have to special-case requests bigger than the
- * block size anyway.) The object is always given binary alignment in
- * this case.
- */
- if (nBytes >= PGRESULT_SEP_ALLOC_THRESHOLD)
- {
- block = (PGresult_data *) malloc(nBytes + PGRESULT_BLOCK_OVERHEAD);
- if (!block)
- return NULL;
- space = block->space + PGRESULT_BLOCK_OVERHEAD;
- if (res->curBlock)
- {
- /*
- * Tuck special block below the active block, so that we don't
- * have to waste the free space in the active block.
- */
- block->next = res->curBlock->next;
- res->curBlock->next = block;
- }
- else
- {
- /* Must set up the new block as the first active block. */
- block->next = NULL;
- res->curBlock = block;
- res->spaceLeft = 0; /* be sure it's marked full */
- }
- return space;
- }
-
- /* Otherwise, start a new block. */
- block = (PGresult_data *) malloc(PGRESULT_DATA_BLOCKSIZE);
- if (!block)
- return NULL;
- block->next = res->curBlock;
- res->curBlock = block;
- if (isBinary)
- {
- /* object needs full alignment */
- res->curOffset = PGRESULT_BLOCK_OVERHEAD;
- res->spaceLeft = PGRESULT_DATA_BLOCKSIZE - PGRESULT_BLOCK_OVERHEAD;
- }
- else
- {
- /* we can cram it right after the overhead pointer */
- res->curOffset = sizeof(PGresult_data);
- res->spaceLeft = PGRESULT_DATA_BLOCKSIZE - sizeof(PGresult_data);
- }
-
- space = block->space + res->curOffset;
- res->curOffset += nBytes;
- res->spaceLeft -= nBytes;
- return space;
-}
-
-/*
- * pqResultStrdup -
- * Like strdup, but the space is subsidiary PGresult space.
- */
-char *
-pqResultStrdup(PGresult *res, const char *str)
-{
- char *space = (char *) pqResultAlloc(res, strlen(str) + 1, FALSE);
-
- if (space)
- strcpy(space, str);
- return space;
-}
-
-/*
- * pqSetResultError -
- * assign a new error message to a PGresult
- */
-void
-pqSetResultError(PGresult *res, const char *msg)
-{
- if (!res)
- return;
- if (msg && *msg)
- res->errMsg = pqResultStrdup(res, msg);
- else
- res->errMsg = NULL;
-}
-
-/*
- * pqCatenateResultError -
- * concatenate a new error message to the one already in a PGresult
- */
-static void
-pqCatenateResultError(PGresult *res, const char *msg)
-{
- PQExpBufferData errorBuf;
-
- if (!res || !msg)
- return;
- initPQExpBuffer(&errorBuf);
- if (res->errMsg)
- appendPQExpBufferStr(&errorBuf, res->errMsg);
- appendPQExpBufferStr(&errorBuf, msg);
- pqSetResultError(res, errorBuf.data);
- termPQExpBuffer(&errorBuf);
-}
-
-/*
- * PQclear -
- * free's the memory associated with a PGresult
- */
-void
-PQclear(PGresult *res)
-{
- PGresult_data *block;
-
- if (!res)
- return;
-
- /* Free all the subsidiary blocks */
- while ((block = res->curBlock) != NULL)
- {
- res->curBlock = block->next;
- free(block);
- }
-
- /* Free the top-level tuple pointer array */
- if (res->tuples)
- free(res->tuples);
-
- /* Free the PGresult structure itself */
- free(res);
-}
-
-/*
- * Handy subroutine to deallocate any partially constructed async result.
- */
-
-void
-pqClearAsyncResult(PGconn *conn)
-{
- if (conn->result)
- PQclear(conn->result);
- conn->result = NULL;
- conn->curTuple = NULL;
-}
-
-/*
- * This subroutine deletes any existing async result, sets conn->result
- * to a PGresult with status PGRES_FATAL_ERROR, and stores the current
- * contents of conn->errorMessage into that result. It differs from a
- * plain call on PQmakeEmptyPGresult() in that if there is already an
- * async result with status PGRES_FATAL_ERROR, the current error message
- * is APPENDED to the old error message instead of replacing it. This
- * behavior lets us report multiple error conditions properly, if necessary.
- * (An example where this is needed is when the backend sends an 'E' message
- * and immediately closes the connection --- we want to report both the
- * backend error and the connection closure error.)
- */
-static void
-saveErrorResult(PGconn *conn)
-{
- /*
- * If no old async result, just let PQmakeEmptyPGresult make one.
- * Likewise if old result is not an error message.
- */
- if (conn->result == NULL ||
- conn->result->resultStatus != PGRES_FATAL_ERROR ||
- conn->result->errMsg == NULL)
- {
- pqClearAsyncResult(conn);
- conn->result = PQmakeEmptyPGresult(conn, PGRES_FATAL_ERROR);
- }
- else
- {
- /* Else, concatenate error message to existing async result. */
- pqCatenateResultError(conn->result, conn->errorMessage.data);
- }
-}
-
-/*
- * This subroutine prepares an async result object for return to the caller.
- * If there is not already an async result object, build an error object
- * using whatever is in conn->errorMessage. In any case, clear the async
- * result storage and make sure PQerrorMessage will agree with the result's
- * error string.
- */
-static PGresult *
-prepareAsyncResult(PGconn *conn)
-{
- PGresult *res;
-
- /*
- * conn->result is the PGresult to return. If it is NULL (which
- * probably shouldn't happen) we assume there is an appropriate error
- * message in conn->errorMessage.
- */
- res = conn->result;
- conn->result = NULL; /* handing over ownership to caller */
- conn->curTuple = NULL; /* just in case */
- if (!res)
- res = PQmakeEmptyPGresult(conn, PGRES_FATAL_ERROR);
- else
- {
- /*
- * Make sure PQerrorMessage agrees with result; it could be
- * different if we have concatenated messages.
- */
- resetPQExpBuffer(&conn->errorMessage);
- appendPQExpBufferStr(&conn->errorMessage,
- PQresultErrorMessage(res));
- }
- return res;
-}
-
-/*
- * addTuple
- * add a row pointer to the PGresult structure, growing it if necessary
- * Returns TRUE if OK, FALSE if not enough memory to add the row
- */
-static int
-addTuple(PGresult *res, PGresAttValue * tup)
-{
- if (res->ntups >= res->tupArrSize)
- {
- /*
- * Try to grow the array.
- *
- * We can use realloc because shallow copying of the structure is
- * okay. Note that the first time through, res->tuples is NULL.
- * While ANSI says that realloc() should act like malloc() in that
- * case, some old C libraries (like SunOS 4.1.x) coredump instead.
- * On failure realloc is supposed to return NULL without damaging
- * the existing allocation. Note that the positions beyond
- * res->ntups are garbage, not necessarily NULL.
- */
- int newSize = (res->tupArrSize > 0) ? res->tupArrSize * 2 : 128;
- PGresAttValue **newTuples;
-
- if (res->tuples == NULL)
- newTuples = (PGresAttValue **)
- malloc(newSize * sizeof(PGresAttValue *));
- else
- newTuples = (PGresAttValue **)
- realloc(res->tuples, newSize * sizeof(PGresAttValue *));
- if (!newTuples)
- return FALSE; /* malloc or realloc failed */
- res->tupArrSize = newSize;
- res->tuples = newTuples;
- }
- res->tuples[res->ntups] = tup;
- res->ntups++;
- return TRUE;
-}
-
-
-/*
- * PQsendQuery
- * Submit a query, but don't wait for it to finish
- *
- * Returns: 1 if successfully submitted
- * 0 if error (conn->errorMessage is set)
- */
-
-int
-PQsendQuery(PGconn *conn, const char *query)
-{
- if (!conn)
- return 0;
-
- /* clear the error string */
- resetPQExpBuffer(&conn->errorMessage);
-
- if (!query)
- {
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("command string is a null pointer\n"));
- return 0;
- }
-
- /* Don't try to send if we know there's no live connection. */
- if (conn->status != CONNECTION_OK)
- {
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("no connection to the server\n"));
- return 0;
- }
- /* Can't send while already busy, either. */
- if (conn->asyncStatus != PGASYNC_IDLE)
- {
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("another command is already in progress\n"));
- return 0;
- }
-
- /* initialize async result-accumulation state */
- conn->result = NULL;
- conn->curTuple = NULL;
-
- /* send the query to the backend; */
-
- /*
- * in order to guarantee that we don't send a partial query where we
- * would become out of sync with the backend and/or block during a
- * non-blocking connection we must first flush the send buffer before
- * sending more data
- *
- * an alternative is to implement 'queue reservations' where we are able
- * to roll up a transaction (the 'Q' along with our query) and make
- * sure we have enough space for it all in the send buffer.
- */
- if (pqIsnonblocking(conn))
- {
- /*
- * the buffer must have emptied completely before we allow a new
- * query to be buffered
- */
- if (pqFlush(conn))
- return 0;
- /* 'Q' == queries */
- /* XXX: if we fail here we really ought to not block */
- if (pqPutc('Q', conn) != 0 || pqPuts(query, conn) != 0)
- {
- handleSendFailure(conn);
- return 0;
- }
-
- /*
- * give the data a push, ignore the return value as ConsumeInput()
- * will do any aditional flushing if needed
- */
- pqFlush(conn);
- }
- else
- {
- /*
- * the frontend-backend protocol uses 'Q' to designate queries
- */
- if (pqPutc('Q', conn) != 0 || pqPuts(query, conn) != 0 ||
- pqFlush(conn) != 0)
- {
- handleSendFailure(conn);
- return 0;
- }
- }
-
- /* OK, it's launched! */
- conn->asyncStatus = PGASYNC_BUSY;
- return 1;
-}
-
-/*
- * handleSendFailure: try to clean up after failure to send command.
- *
- * Primarily, what we want to accomplish here is to process an async
- * WARNING message that the backend might have sent just before it died.
- *
- * NOTE: this routine should only be called in PGASYNC_IDLE state.
- */
-
-static void
-handleSendFailure(PGconn *conn)
-{
- /*
- * Accept any available input data, ignoring errors. Note that if
- * pqReadData decides the backend has closed the channel, it will
- * close our side of the socket --- that's just what we want here.
- */
- while (pqReadData(conn) > 0)
- /* loop until no more data readable */ ;
-
- /*
- * Parse any available input messages. Since we are in PGASYNC_IDLE
- * state, only WARNING and NOTIFY messages will be eaten.
- */
- parseInput(conn);
-}
-
-/*
- * Consume any available input from the backend
- * 0 return: some kind of trouble
- * 1 return: no problem
- */
-
-int
-PQconsumeInput(PGconn *conn)
-{
- if (!conn)
- return 0;
-
- /*
- * Load more data, if available. We do this no matter what state we
- * are in, since we are probably getting called because the
- * application wants to get rid of a read-select condition. Note that
- * we will NOT block waiting for more input.
- */
- if (pqReadData(conn) < 0)
- {
- /*
- * for non-blocking connections try to flush the send-queue
- * otherwise we may never get a responce for something that may
- * not have already been sent because it's in our write buffer!
- */
- if (pqIsnonblocking(conn))
- (void) pqFlush(conn);
- return 0;
- }
- /* Parsing of the data waits till later. */
- return 1;
-}
-
-
-/*
- * parseInput: if appropriate, parse input data from backend
- * until input is exhausted or a stopping state is reached.
- * Note that this function will NOT attempt to read more data from the backend.
- */
-
-static void
-parseInput(PGconn *conn)
-{
- char id;
- char noticeWorkspace[128];
-
- /*
- * Loop to parse successive complete messages available in the buffer.
- */
- for (;;)
- {
- /*
- * Quit if in COPY_OUT state: we expect raw data from the server
- * until PQendcopy is called. Don't try to parse it according to
- * the normal protocol. (This is bogus. The data lines ought to
- * be part of the protocol and have identifying leading
- * characters.)
- */
- if (conn->asyncStatus == PGASYNC_COPY_OUT)
- return;
-
- /*
- * OK to try to read a message type code.
- */
- conn->inCursor = conn->inStart;
- if (pqGetc(&id, conn))
- return;
-
- /*
- * NOTIFY and WARNING messages can happen in any state besides COPY
- * OUT; always process them right away.
- *
- * Most other messages should only be processed while in BUSY state.
- * (In particular, in READY state we hold off further parsing
- * until the application collects the current PGresult.)
- *
- * However, if the state is IDLE then we got trouble; we need to deal
- * with the unexpected message somehow.
- */
- if (id == 'A')
- {
- if (getNotify(conn))
- return;
- }
- else if (id == 'N')
- {
- if (getNotice(conn))
- return;
- }
- else if (conn->asyncStatus != PGASYNC_BUSY)
- {
- /* If not IDLE state, just wait ... */
- if (conn->asyncStatus != PGASYNC_IDLE)
- return;
-
- /*
- * Unexpected message in IDLE state; need to recover somehow.
- * ERROR messages are displayed using the notice processor;
- * anything else is just dropped on the floor after displaying
- * a suitable warning notice. (An ERROR is very possibly the
- * backend telling us why it is about to close the connection,
- * so we don't want to just discard it...)
- */
- if (id == 'E')
- {
- if (getNotice(conn))
- return;
- }
- else
- {
- snprintf(noticeWorkspace, sizeof(noticeWorkspace),
- libpq_gettext("message type 0x%02x arrived from server while idle\n"),
- id);
- DONOTICE(conn, noticeWorkspace);
- /* Discard the unexpected message; good idea?? */
- conn->inStart = conn->inEnd;
- break;
- }
- }
- else
- {
- /*
- * In BUSY state, we can process everything.
- */
- switch (id)
- {
- case 'C': /* command complete */
- if (pqGets(&conn->workBuffer, conn))
- return;
- if (conn->result == NULL)
- conn->result = PQmakeEmptyPGresult(conn,
- PGRES_COMMAND_OK);
- strncpy(conn->result->cmdStatus, conn->workBuffer.data,
- CMDSTATUS_LEN);
- conn->asyncStatus = PGASYNC_READY;
- break;
- case 'E': /* error return */
- if (pqGets(&conn->errorMessage, conn))
- return;
- /* build an error result holding the error message */
- saveErrorResult(conn);
- conn->asyncStatus = PGASYNC_READY;
- break;
- case 'Z': /* backend is ready for new query */
- conn->asyncStatus = PGASYNC_IDLE;
- break;
- case 'I': /* empty query */
- /* read and throw away the closing '\0' */
- if (pqGetc(&id, conn))
- return;
- if (id != '\0')
- {
- snprintf(noticeWorkspace, sizeof(noticeWorkspace),
- libpq_gettext("unexpected character %c following empty query response (\"I\" message)\n"),
- id);
- DONOTICE(conn, noticeWorkspace);
- }
- if (conn->result == NULL)
- conn->result = PQmakeEmptyPGresult(conn,
- PGRES_EMPTY_QUERY);
- conn->asyncStatus = PGASYNC_READY;
- break;
- case 'K': /* secret key data from the backend */
-
- /*
- * This is expected only during backend startup, but
- * it's just as easy to handle it as part of the main
- * loop. Save the data and continue processing.
- */
- if (pqGetInt(&(conn->be_pid), 4, conn))
- return;
- if (pqGetInt(&(conn->be_key), 4, conn))
- return;
- break;
- case 'P': /* synchronous (normal) portal */
- if (pqGets(&conn->workBuffer, conn))
- return;
- /* We pretty much ignore this message type... */
- break;
- case 'T': /* row descriptions (start of query
- * results) */
- if (conn->result == NULL)
- {
- /* First 'T' in a query sequence */
- if (getRowDescriptions(conn))
- return;
- }
- else
- {
- /*
- * A new 'T' message is treated as the start of
- * another PGresult. (It is not clear that this
- * is really possible with the current backend.)
- * We stop parsing until the application accepts
- * the current result.
- */
- conn->asyncStatus = PGASYNC_READY;
- return;
- }
- break;
- case 'D': /* ASCII data tuple */
- if (conn->result != NULL)
- {
- /* Read another tuple of a normal query response */
- if (getAnotherTuple(conn, FALSE))
- return;
- }
- else
- {
- snprintf(noticeWorkspace, sizeof(noticeWorkspace),
- libpq_gettext("server sent data (\"D\" message) without prior row description (\"T\" message)\n"));
- DONOTICE(conn, noticeWorkspace);
- /* Discard the unexpected message; good idea?? */
- conn->inStart = conn->inEnd;
- return;
- }
- break;
- case 'B': /* Binary data tuple */
- if (conn->result != NULL)
- {
- /* Read another tuple of a normal query response */
- if (getAnotherTuple(conn, TRUE))
- return;
- }
- else
- {
- snprintf(noticeWorkspace, sizeof(noticeWorkspace),
- libpq_gettext("server sent binary data (\"B\" message) without prior row description (\"T\" message)\n"));
- DONOTICE(conn, noticeWorkspace);
- /* Discard the unexpected message; good idea?? */
- conn->inStart = conn->inEnd;
- return;
- }
- break;
- case 'G': /* Start Copy In */
- conn->asyncStatus = PGASYNC_COPY_IN;
- break;
- case 'H': /* Start Copy Out */
- conn->asyncStatus = PGASYNC_COPY_OUT;
- break;
- default:
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext(
- "unexpected response from server; first received character was \"%c\"\n"),
- id);
- /* build an error result holding the error message */
- saveErrorResult(conn);
- /* Discard the unexpected message; good idea?? */
- conn->inStart = conn->inEnd;
- conn->asyncStatus = PGASYNC_READY;
- return;
- } /* switch on protocol character */
- }
- /* Successfully consumed this message */
- conn->inStart = conn->inCursor;
- }
-}
-
-
-/*
- * parseInput subroutine to read a 'T' (row descriptions) message.
- * We build a PGresult structure containing the attribute data.
- * Returns: 0 if completed message, EOF if not enough data yet.
- *
- * Note that if we run out of data, we have to release the partially
- * constructed PGresult, and rebuild it again next time. Fortunately,
- * that shouldn't happen often, since 'T' messages usually fit in a packet.
- */
-
-static int
-getRowDescriptions(PGconn *conn)
-{
- PGresult *result;
- int nfields;
- int i;
-
- result = PQmakeEmptyPGresult(conn, PGRES_TUPLES_OK);
-
- /* parseInput already read the 'T' label. */
- /* the next two bytes are the number of fields */
- if (pqGetInt(&(result->numAttributes), 2, conn))
- {
- PQclear(result);
- return EOF;
- }
- nfields = result->numAttributes;
-
- /* allocate space for the attribute descriptors */
- if (nfields > 0)
- {
- result->attDescs = (PGresAttDesc *)
- pqResultAlloc(result, nfields * sizeof(PGresAttDesc), TRUE);
- MemSet((char *) result->attDescs, 0, nfields * sizeof(PGresAttDesc));
- }
-
- /* get type info */
- for (i = 0; i < nfields; i++)
- {
- int typid;
- int typlen;
- int atttypmod;
-
- if (pqGets(&conn->workBuffer, conn) ||
- pqGetInt(&typid, 4, conn) ||
- pqGetInt(&typlen, 2, conn) ||
- pqGetInt(&atttypmod, 4, conn))
- {
- PQclear(result);
- return EOF;
- }
-
- /*
- * Since pqGetInt treats 2-byte integers as unsigned, we need to
- * coerce the special value "-1" to signed form. (-1 is sent for
- * variable-length fields.) Formerly, libpq effectively did a
- * sign-extension on the 2-byte value by storing it in a signed
- * short. Now we only coerce the single value 65535 == -1; values
- * 32768..65534 are taken as valid field lengths.
- */
- if (typlen == 0xFFFF)
- typlen = -1;
- result->attDescs[i].name = pqResultStrdup(result,
- conn->workBuffer.data);
- result->attDescs[i].typid = typid;
- result->attDescs[i].typlen = typlen;
- result->attDescs[i].atttypmod = atttypmod;
- }
-
- /* Success! */
- conn->result = result;
- return 0;
-}
-
-/*
- * parseInput subroutine to read a 'B' or 'D' (row data) message.
- * We add another tuple to the existing PGresult structure.
- * Returns: 0 if completed message, EOF if error or not enough data yet.
- *
- * Note that if we run out of data, we have to suspend and reprocess
- * the message after more data is received. We keep a partially constructed
- * tuple in conn->curTuple, and avoid reallocating already-allocated storage.
- */
-
-static int
-getAnotherTuple(PGconn *conn, int binary)
-{
- PGresult *result = conn->result;
- int nfields = result->numAttributes;
- PGresAttValue *tup;
-
- /* the backend sends us a bitmap of which attributes are null */
- char std_bitmap[64]; /* used unless it doesn't fit */
- char *bitmap = std_bitmap;
- int i;
- size_t nbytes; /* the number of bytes in bitmap */
- char bmap; /* One byte of the bitmap */
- int bitmap_index; /* Its index */
- int bitcnt; /* number of bits examined in current byte */
- int vlen; /* length of the current field value */
-
- result->binary = binary;
-
- /* Allocate tuple space if first time for this data message */
- if (conn->curTuple == NULL)
- {
- conn->curTuple = (PGresAttValue *)
- pqResultAlloc(result, nfields * sizeof(PGresAttValue), TRUE);
- if (conn->curTuple == NULL)
- goto outOfMemory;
- MemSet((char *) conn->curTuple, 0, nfields * sizeof(PGresAttValue));
- }
- tup = conn->curTuple;
-
- /* Get the null-value bitmap */
- nbytes = (nfields + BYTELEN - 1) / BYTELEN;
- /* malloc() only for unusually large field counts... */
- if (nbytes > sizeof(std_bitmap))
- bitmap = (char *) malloc(nbytes);
-
- if (pqGetnchar(bitmap, nbytes, conn))
- goto EOFexit;
-
- /* Scan the fields */
- bitmap_index = 0;
- bmap = bitmap[bitmap_index];
- bitcnt = 0;
-
- for (i = 0; i < nfields; i++)
- {
- if (!(bmap & 0200))
- {
- /* if the field value is absent, make it a null string */
- tup[i].value = result->null_field;
- tup[i].len = NULL_LEN;
- }
- else
- {
- /* get the value length (the first four bytes are for length) */
- if (pqGetInt(&vlen, 4, conn))
- goto EOFexit;
- if (binary == 0)
- vlen = vlen - 4;
- if (vlen < 0)
- vlen = 0;
- if (tup[i].value == NULL)
- {
- tup[i].value = (char *) pqResultAlloc(result, vlen + 1, (bool) binary);
- if (tup[i].value == NULL)
- goto outOfMemory;
- }
- tup[i].len = vlen;
- /* read in the value */
- if (vlen > 0)
- if (pqGetnchar((char *) (tup[i].value), vlen, conn))
- goto EOFexit;
- /* we have to terminate this ourselves */
- tup[i].value[vlen] = '\0';
- }
- /* advance the bitmap stuff */
- bitcnt++;
- if (bitcnt == BYTELEN)
- {
- bitmap_index++;
- bmap = bitmap[bitmap_index];
- bitcnt = 0;
- }
- else
- bmap <<= 1;
- }
-
- /* Success! Store the completed tuple in the result */
- if (!addTuple(result, tup))
- goto outOfMemory;
- /* and reset for a new message */
- conn->curTuple = NULL;
-
- if (bitmap != std_bitmap)
- free(bitmap);
- return 0;
-
-outOfMemory:
- /* Replace partially constructed result with an error result */
-
- /*
- * we do NOT use saveErrorResult() here, because of the likelihood
- * that there's not enough memory to concatenate messages...
- */
- pqClearAsyncResult(conn);
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("out of memory\n"));
- conn->result = PQmakeEmptyPGresult(conn, PGRES_FATAL_ERROR);
- conn->asyncStatus = PGASYNC_READY;
- /* Discard the failed message --- good idea? */
- conn->inStart = conn->inEnd;
-
-EOFexit:
- if (bitmap != std_bitmap)
- free(bitmap);
- return EOF;
-}
-
-
-/*
- * PQisBusy
- * Return TRUE if PQgetResult would block waiting for input.
- */
-
-int
-PQisBusy(PGconn *conn)
-{
- if (!conn)
- return FALSE;
-
- /* Parse any available data, if our state permits. */
- parseInput(conn);
-
- /* PQgetResult will return immediately in all states except BUSY. */
- return conn->asyncStatus == PGASYNC_BUSY;
-}
-
-
-/*
- * PQgetResult
- * Get the next PGresult produced by a query.
- * Returns NULL if and only if no query work remains.
- */
-
-PGresult *
-PQgetResult(PGconn *conn)
-{
- PGresult *res;
-
- if (!conn)
- return NULL;
-
- /* Parse any available data, if our state permits. */
- parseInput(conn);
-
- /* If not ready to return something, block until we are. */
- while (conn->asyncStatus == PGASYNC_BUSY)
- {
- /* Wait for some more data, and load it. */
- if (pqWait(TRUE, FALSE, conn) ||
- pqReadData(conn) < 0)
- {
- /*
- * conn->errorMessage has been set by pqWait or pqReadData. We
- * want to append it to any already-received error message.
- */
- saveErrorResult(conn);
- conn->asyncStatus = PGASYNC_IDLE;
- return prepareAsyncResult(conn);
- }
- /* Parse it. */
- parseInput(conn);
- }
-
- /* Return the appropriate thing. */
- switch (conn->asyncStatus)
- {
- case PGASYNC_IDLE:
- res = NULL; /* query is complete */
- break;
- case PGASYNC_READY:
- res = prepareAsyncResult(conn);
- /* Set the state back to BUSY, allowing parsing to proceed. */
- conn->asyncStatus = PGASYNC_BUSY;
- break;
- case PGASYNC_COPY_IN:
- res = PQmakeEmptyPGresult(conn, PGRES_COPY_IN);
- break;
- case PGASYNC_COPY_OUT:
- res = PQmakeEmptyPGresult(conn, PGRES_COPY_OUT);
- break;
- default:
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("unexpected asyncStatus: %d\n"),
- (int) conn->asyncStatus);
- res = PQmakeEmptyPGresult(conn, PGRES_FATAL_ERROR);
- break;
- }
-
- return res;
-}
-
-
-/*
- * PQexec
- * send a query to the backend and package up the result in a PGresult
- *
- * If the query was not even sent, return NULL; conn->errorMessage is set to
- * a relevant message.
- * If the query was sent, a new PGresult is returned (which could indicate
- * either success or failure).
- * The user is responsible for freeing the PGresult via PQclear()
- * when done with it.
- */
-
-PGresult *
-PQexec(PGconn *conn, const char *query)
-{
- PGresult *result;
- PGresult *lastResult;
- bool savedblocking;
-
- /*
- * we assume anyone calling PQexec wants blocking behaviour, we force
- * the blocking status of the connection to blocking for the duration
- * of this function and restore it on return
- */
- savedblocking = pqIsnonblocking(conn);
- if (PQsetnonblocking(conn, FALSE) == -1)
- return NULL;
-
- /*
- * Silently discard any prior query result that application didn't
- * eat. This is probably poor design, but it's here for backward
- * compatibility.
- */
- while ((result = PQgetResult(conn)) != NULL)
- {
- if (result->resultStatus == PGRES_COPY_IN ||
- result->resultStatus == PGRES_COPY_OUT)
- {
- PQclear(result);
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("COPY state must be terminated first\n"));
- /* restore blocking status */
- goto errout;
- }
- PQclear(result);
- }
-
- /* OK to send the message */
- if (!PQsendQuery(conn, query))
- goto errout; /* restore blocking status */
-
- /*
- * For backwards compatibility, return the last result if there are
- * more than one --- but merge error messages if we get more than one
- * error result.
- *
- * We have to stop if we see copy in/out, however. We will resume parsing
- * when application calls PQendcopy.
- */
- lastResult = NULL;
- while ((result = PQgetResult(conn)) != NULL)
- {
- if (lastResult)
- {
- if (lastResult->resultStatus == PGRES_FATAL_ERROR &&
- result->resultStatus == PGRES_FATAL_ERROR)
- {
- pqCatenateResultError(lastResult, result->errMsg);
- PQclear(result);
- result = lastResult;
- /* Make sure PQerrorMessage agrees with catenated result */
- resetPQExpBuffer(&conn->errorMessage);
- appendPQExpBufferStr(&conn->errorMessage, result->errMsg);
- }
- else
- PQclear(lastResult);
- }
- lastResult = result;
- if (result->resultStatus == PGRES_COPY_IN ||
- result->resultStatus == PGRES_COPY_OUT)
- break;
- }
-
- if (PQsetnonblocking(conn, savedblocking) == -1)
- return NULL;
- return lastResult;
-
-errout:
- if (PQsetnonblocking(conn, savedblocking) == -1)
- return NULL;
- return NULL;
-}
-
-
-/*
- * Attempt to read a Notice response message.
- * This is possible in several places, so we break it out as a subroutine.
- * Entry: 'N' flag character has already been consumed.
- * Exit: returns 0 if successfully consumed Notice message.
- * returns EOF if not enough data.
- */
-static int
-getNotice(PGconn *conn)
-{
- /*
- * Since the Notice might be pretty long, we create a temporary
- * PQExpBuffer rather than using conn->workBuffer. workBuffer is
- * intended for stuff that is expected to be short.
- */
- PQExpBufferData noticeBuf;
-
- initPQExpBuffer(&noticeBuf);
- if (pqGets(&noticeBuf, conn))
- {
- termPQExpBuffer(&noticeBuf);
- return EOF;
- }
- DONOTICE(conn, noticeBuf.data);
- termPQExpBuffer(&noticeBuf);
- return 0;
-}
-
-/*
- * Attempt to read a Notify response message.
- * This is possible in several places, so we break it out as a subroutine.
- * Entry: 'A' flag character has already been consumed.
- * Exit: returns 0 if successfully consumed Notify message.
- * returns EOF if not enough data.
- */
-static int
-getNotify(PGconn *conn)
-{
- int be_pid;
- PGnotify *newNotify;
-
- if (pqGetInt(&be_pid, 4, conn))
- return EOF;
- if (pqGets(&conn->workBuffer, conn))
- return EOF;
-
- /*
- * Store the relation name right after the PQnotify structure so it can
- * all be freed at once. We don't use NAMEDATALEN because we don't
- * want to tie this interface to a specific server name length.
- */
- newNotify = (PGnotify *) malloc(sizeof(PGnotify) +
- strlen(conn->workBuffer.data) + 1);
- newNotify->relname = (char *)newNotify + sizeof(PGnotify);
- strcpy(newNotify->relname, conn->workBuffer.data);
- newNotify->be_pid = be_pid;
- DLAddTail(conn->notifyList, DLNewElem(newNotify));
- return 0;
-}
-
-/*
- * PQnotifies
- * returns a PGnotify* structure of the latest async notification
- * that has not yet been handled
- *
- * returns NULL, if there is currently
- * no unhandled async notification from the backend
- *
- * the CALLER is responsible for FREE'ing the structure returned
- */
-
-PGnotify *
-PQnotifies(PGconn *conn)
-{
- Dlelem *e;
- PGnotify *event;
-
- if (!conn)
- return NULL;
-
- /* Parse any available data to see if we can extract NOTIFY messages. */
- parseInput(conn);
-
- /* RemHead returns NULL if list is empty */
- e = DLRemHead(conn->notifyList);
- if (!e)
- return NULL;
- event = (PGnotify *) DLE_VAL(e);
- DLFreeElem(e);
- return event;
-}
-
-/*
- * PQfreeNotify - free's the memory associated with a PGnotify
- *
- * This function is needed on Windows when using libpq.dll and
- * for example libpgtcl.dll: All memory allocated inside a dll
- * should be freed in the context of the same dll.
- *
- */
-void
-PQfreeNotify(PGnotify *notify)
-{
- free(notify);
-}
-
-/*
- * PQgetline - gets a newline-terminated string from the backend.
- *
- * Chiefly here so that applications can use "COPY <rel> to stdout"
- * and read the output string. Returns a null-terminated string in s.
- *
- * PQgetline reads up to maxlen-1 characters (like fgets(3)) but strips
- * the terminating \n (like gets(3)).
- *
- * CAUTION: the caller is responsible for detecting the end-of-copy signal
- * (a line containing just "\.") when using this routine.
- *
- * RETURNS:
- * EOF if it is detected or invalid arguments are given
- * 0 if EOL is reached (i.e., \n has been read)
- * (this is required for backward-compatibility -- this
- * routine used to always return EOF or 0, assuming that
- * the line ended within maxlen bytes.)
- * 1 in other cases (i.e., the buffer was filled before \n is reached)
- */
-int
-PQgetline(PGconn *conn, char *s, int maxlen)
-{
- int result = 1; /* return value if buffer overflows */
-
- if (!s || maxlen <= 0)
- return EOF;
-
- if (!conn || conn->sock < 0)
- {
- *s = '\0';
- return EOF;
- }
-
- /*
- * Since this is a purely synchronous routine, we don't bother to
- * maintain conn->inCursor; there is no need to back up.
- */
- while (maxlen > 1)
- {
- if (conn->inStart < conn->inEnd)
- {
- char c = conn->inBuffer[conn->inStart++];
-
- if (c == '\n')
- {
- result = 0; /* success exit */
- break;
- }
- *s++ = c;
- maxlen--;
- }
- else
- {
- /* need to load more data */
- if (pqWait(TRUE, FALSE, conn) ||
- pqReadData(conn) < 0)
- {
- result = EOF;
- break;
- }
- }
- }
- *s = '\0';
-
- return result;
-}
-
-/*
- * PQgetlineAsync - gets a newline-terminated string without blocking.
- *
- * This routine is for applications that want to do "COPY <rel> to stdout"
- * asynchronously, that is without blocking. Having issued the COPY command
- * and gotten a PGRES_COPY_OUT response, the app should call PQconsumeInput
- * and this routine until the end-of-data signal is detected. Unlike
- * PQgetline, this routine takes responsibility for detecting end-of-data.
- *
- * On each call, PQgetlineAsync will return data if a complete newline-
- * terminated data line is available in libpq's input buffer, or if the
- * incoming data line is too long to fit in the buffer offered by the caller.
- * Otherwise, no data is returned until the rest of the line arrives.
- *
- * If -1 is returned, the end-of-data signal has been recognized (and removed
- * from libpq's input buffer). The caller *must* next call PQendcopy and
- * then return to normal processing.
- *
- * RETURNS:
- * -1 if the end-of-copy-data marker has been recognized
- * 0 if no data is available
- * >0 the number of bytes returned.
- * The data returned will not extend beyond a newline character. If possible
- * a whole line will be returned at one time. But if the buffer offered by
- * the caller is too small to hold a line sent by the backend, then a partial
- * data line will be returned. This can be detected by testing whether the
- * last returned byte is '\n' or not.
- * The returned string is *not* null-terminated.
- */
-
-int
-PQgetlineAsync(PGconn *conn, char *buffer, int bufsize)
-{
- int avail;
-
- if (!conn || conn->asyncStatus != PGASYNC_COPY_OUT)
- return -1; /* we are not doing a copy... */
-
- /*
- * Move data from libpq's buffer to the caller's. We want to accept
- * data only in units of whole lines, not partial lines. This ensures
- * that we can recognize the terminator line "\\.\n". (Otherwise, if
- * it happened to cross a packet/buffer boundary, we might hand the
- * first one or two characters off to the caller, which we shouldn't.)
- */
-
- conn->inCursor = conn->inStart;
-
- avail = bufsize;
- while (avail > 0 && conn->inCursor < conn->inEnd)
- {
- char c = conn->inBuffer[conn->inCursor++];
-
- *buffer++ = c;
- --avail;
- if (c == '\n')
- {
- /* Got a complete line; mark the data removed from libpq */
- conn->inStart = conn->inCursor;
- /* Is it the endmarker line? */
- if (bufsize - avail == 3 && buffer[-3] == '\\' && buffer[-2] == '.')
- return -1;
- /* No, return the data line to the caller */
- return bufsize - avail;
- }
- }
-
- /*
- * We don't have a complete line. We'd prefer to leave it in libpq's
- * buffer until the rest arrives, but there is a special case: what if
- * the line is longer than the buffer the caller is offering us? In
- * that case we'd better hand over a partial line, else we'd get into
- * an infinite loop. Do this in a way that ensures we can't
- * misrecognize a terminator line later: leave last 3 characters in
- * libpq buffer.
- */
- if (avail == 0 && bufsize > 3)
- {
- conn->inStart = conn->inCursor - 3;
- return bufsize - 3;
- }
- return 0;
-}
-
-/*
- * PQputline -- sends a string to the backend.
- * Returns 0 if OK, EOF if not.
- *
- * Chiefly here so that applications can use "COPY <rel> from stdin".
- */
-int
-PQputline(PGconn *conn, const char *s)
-{
- if (!conn || conn->sock < 0)
- return EOF;
- return pqPutnchar(s, strlen(s), conn);
-}
-
-/*
- * PQputnbytes -- like PQputline, but buffer need not be null-terminated.
- * Returns 0 if OK, EOF if not.
- */
-int
-PQputnbytes(PGconn *conn, const char *buffer, int nbytes)
-{
- if (!conn || conn->sock < 0)
- return EOF;
- return pqPutnchar(buffer, nbytes, conn);
-}
-
-/*
- * PQendcopy
- * After completing the data transfer portion of a copy in/out,
- * the application must call this routine to finish the command protocol.
- *
- * RETURNS:
- * 0 on success
- * 1 on failure
- */
-int
-PQendcopy(PGconn *conn)
-{
- PGresult *result;
-
- if (!conn)
- return 0;
-
- if (conn->asyncStatus != PGASYNC_COPY_IN &&
- conn->asyncStatus != PGASYNC_COPY_OUT)
- {
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("no COPY in progress\n"));
- return 1;
- }
-
- /*
- * make sure no data is waiting to be sent, abort if we are
- * non-blocking and the flush fails
- */
- if (pqFlush(conn) && pqIsnonblocking(conn))
- return (1);
-
- /* non blocking connections may have to abort at this point. */
- if (pqIsnonblocking(conn) && PQisBusy(conn))
- return (1);
-
- /* Return to active duty */
- conn->asyncStatus = PGASYNC_BUSY;
- resetPQExpBuffer(&conn->errorMessage);
-
- /* Wait for the completion response */
- result = PQgetResult(conn);
-
- /* Expecting a successful result */
- if (result && result->resultStatus == PGRES_COMMAND_OK)
- {
- PQclear(result);
- return 0;
- }
-
- /*
- * Trouble. The worst case is that we've lost sync with the backend
- * entirely due to application screwup of the copy in/out protocol. To
- * recover, reset the connection (talk about using a sledgehammer...)
- */
- PQclear(result);
-
- if (conn->errorMessage.len > 0)
- DONOTICE(conn, conn->errorMessage.data);
-
- DONOTICE(conn, libpq_gettext("lost synchronization with server, resetting connection\n"));
-
- /*
- * Users doing non-blocking connections need to handle the reset
- * themselves, they'll need to check the connection status if we
- * return an error.
- */
- if (pqIsnonblocking(conn))
- PQresetStart(conn);
- else
- PQreset(conn);
-
- return 1;
-}
-
-
-/* ----------------
- * PQfn - Send a function call to the POSTGRES backend.
- *
- * conn : backend connection
- * fnid : function id
- * result_buf : pointer to result buffer (&int if integer)
- * result_len : length of return value.
- * actual_result_len: actual length returned. (differs from result_len
- * for varlena structures.)
- * result_type : If the result is an integer, this must be 1,
- * otherwise this should be 0
- * args : pointer to an array of function arguments.
- * (each has length, if integer, and value/pointer)
- * nargs : # of arguments in args array.
- *
- * RETURNS
- * PGresult with status = PGRES_COMMAND_OK if successful.
- * *actual_result_len is > 0 if there is a return value, 0 if not.
- * PGresult with status = PGRES_FATAL_ERROR if backend returns an error.
- * NULL on communications failure. conn->errorMessage will be set.
- * ----------------
- */
-
-PGresult *
-PQfn(PGconn *conn,
- int fnid,
- int *result_buf,
- int *actual_result_len,
- int result_is_int,
- const PQArgBlock *args,
- int nargs)
-{
- bool needInput = false;
- ExecStatusType status = PGRES_FATAL_ERROR;
- char id;
- int i;
-
- *actual_result_len = 0;
-
- if (!conn)
- return NULL;
-
- /* clear the error string */
- resetPQExpBuffer(&conn->errorMessage);
-
- if (conn->sock < 0 || conn->asyncStatus != PGASYNC_IDLE ||
- conn->result != NULL)
- {
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("connection in wrong state\n"));
- return NULL;
- }
-
- if (pqPuts("F ", conn) != 0 || /* function */
- pqPutInt(fnid, 4, conn) != 0 || /* function id */
- pqPutInt(nargs, 4, conn) != 0) /* # of args */
- {
- handleSendFailure(conn);
- return NULL;
- }
-
- for (i = 0; i < nargs; ++i)
- { /* len.int4 + contents */
- if (pqPutInt(args[i].len, 4, conn))
- {
- handleSendFailure(conn);
- return NULL;
- }
-
- if (args[i].isint)
- {
- if (pqPutInt(args[i].u.integer, 4, conn))
- {
- handleSendFailure(conn);
- return NULL;
- }
- }
- else
- {
- if (pqPutnchar((char *) args[i].u.ptr, args[i].len, conn))
- {
- handleSendFailure(conn);
- return NULL;
- }
- }
- }
- if (pqFlush(conn))
- {
- handleSendFailure(conn);
- return NULL;
- }
-
- for (;;)
- {
- if (needInput)
- {
- /* Wait for some data to arrive (or for the channel to close) */
- if (pqWait(TRUE, FALSE, conn) ||
- pqReadData(conn) < 0)
- break;
- }
-
- /*
- * Scan the message. If we run out of data, loop around to try
- * again.
- */
- conn->inCursor = conn->inStart;
- needInput = true;
-
- if (pqGetc(&id, conn))
- continue;
-
- /*
- * We should see V or E response to the command, but might get N
- * and/or A notices first. We also need to swallow the final Z
- * before returning.
- */
- switch (id)
- {
- case 'V': /* function result */
- if (pqGetc(&id, conn))
- continue;
- if (id == 'G')
- {
- /* function returned nonempty value */
- if (pqGetInt(actual_result_len, 4, conn))
- continue;
- if (result_is_int)
- {
- if (pqGetInt(result_buf, 4, conn))
- continue;
- }
- else
- {
- if (pqGetnchar((char *) result_buf,
- *actual_result_len,
- conn))
- continue;
- }
- if (pqGetc(&id, conn)) /* get the last '0' */
- continue;
- }
- if (id == '0')
- {
- /* correctly finished function result message */
- status = PGRES_COMMAND_OK;
- }
- else
- {
- /* The backend violates the protocol. */
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("protocol error: id=0x%x\n"),
- id);
- saveErrorResult(conn);
- conn->inStart = conn->inCursor;
- return prepareAsyncResult(conn);
- }
- break;
- case 'E': /* error return */
- if (pqGets(&conn->errorMessage, conn))
- continue;
- /* build an error result holding the error message */
- saveErrorResult(conn);
- status = PGRES_FATAL_ERROR;
- break;
- case 'A': /* notify message */
- /* handle notify and go back to processing return values */
- if (getNotify(conn))
- continue;
- break;
- case 'N': /* notice */
- /* handle notice and go back to processing return values */
- if (getNotice(conn))
- continue;
- break;
- case 'Z': /* backend is ready for new query */
- /* consume the message and exit */
- conn->inStart = conn->inCursor;
- /* if we saved a result object (probably an error), use it */
- if (conn->result)
- return prepareAsyncResult(conn);
- return PQmakeEmptyPGresult(conn, status);
- default:
- /* The backend violates the protocol. */
- printfPQExpBuffer(&conn->errorMessage,
- libpq_gettext("protocol error: id=0x%x\n"),
- id);
- saveErrorResult(conn);
- conn->inStart = conn->inCursor;
- return prepareAsyncResult(conn);
- }
- /* Completed this message, keep going */
- conn->inStart = conn->inCursor;
- needInput = false;
- }
-
- /*
- * We fall out of the loop only upon failing to read data.
- * conn->errorMessage has been set by pqWait or pqReadData. We want to
- * append it to any already-received error message.
- */
- saveErrorResult(conn);
- return prepareAsyncResult(conn);
-}
-
-
-/* ====== accessor funcs for PGresult ======== */
-
-ExecStatusType
-PQresultStatus(const PGresult *res)
-{
- if (!res)
- return PGRES_NONFATAL_ERROR;
- return res->resultStatus;
-}
-
-char *
-PQresStatus(ExecStatusType status)
-{
- if (status < 0 || status >= sizeof pgresStatus / sizeof pgresStatus[0])
- return libpq_gettext("invalid ExecStatusType code");
- return pgresStatus[status];
-}
-
-char *
-PQresultErrorMessage(const PGresult *res)
-{
- if (!res || !res->errMsg)
- return "";
- return res->errMsg;
-}
-
-int
-PQntuples(const PGresult *res)
-{
- if (!res)
- return 0;
- return res->ntups;
-}
-
-int
-PQnfields(const PGresult *res)
-{
- if (!res)
- return 0;
- return res->numAttributes;
-}
-
-int
-PQbinaryTuples(const PGresult *res)
-{
- if (!res)
- return 0;
- return res->binary;
-}
-
-/*
- * Helper routines to range-check field numbers and tuple numbers.
- * Return TRUE if OK, FALSE if not
- */
-
-static int
-check_field_number(const PGresult *res, int field_num)
-{
- char noticeBuf[128];
-
- if (!res)
- return FALSE; /* no way to display error message... */
- if (field_num < 0 || field_num >= res->numAttributes)
- {
- if (res->noticeHook)
- {
- snprintf(noticeBuf, sizeof(noticeBuf),
- libpq_gettext("column number %d is out of range 0..%d\n"),
- field_num, res->numAttributes - 1);
- DONOTICE(res, noticeBuf);
- }
- return FALSE;
- }
- return TRUE;
-}
-
-static int
-check_tuple_field_number(const PGresult *res,
- int tup_num, int field_num)
-{
- char noticeBuf[128];
-
- if (!res)
- return FALSE; /* no way to display error message... */
- if (tup_num < 0 || tup_num >= res->ntups)
- {
- if (res->noticeHook)
- {
- snprintf(noticeBuf, sizeof(noticeBuf),
- libpq_gettext("row number %d is out of range 0..%d\n"),
- tup_num, res->ntups - 1);
- DONOTICE(res, noticeBuf);
- }
- return FALSE;
- }
- if (field_num < 0 || field_num >= res->numAttributes)
- {
- if (res->noticeHook)
- {
- snprintf(noticeBuf, sizeof(noticeBuf),
- libpq_gettext("column number %d is out of range 0..%d\n"),
- field_num, res->numAttributes - 1);
- DONOTICE(res, noticeBuf);
- }
- return FALSE;
- }
- return TRUE;
-}
-
-/*
- returns NULL if the field_num is invalid
-*/
-char *
-PQfname(const PGresult *res, int field_num)
-{
- if (!check_field_number(res, field_num))
- return NULL;
- if (res->attDescs)
- return res->attDescs[field_num].name;
- else
- return NULL;
-}
-
-/*
- returns -1 on a bad field name
-*/
-int
-PQfnumber(const PGresult *res, const char *field_name)
-{
- int i;
- char *field_case;
-
- if (!res)
- return -1;
-
- if (field_name == NULL ||
- field_name[0] == '\0' ||
- res->attDescs == NULL)
- return -1;
-
- field_case = strdup(field_name);
- if (*field_case == '"')
- {
- strcpy(field_case, field_case + 1);
- *(field_case + strlen(field_case) - 1) = '\0';
- }
- else
- for (i = 0; field_case[i]; i++)
- if (isupper((unsigned char) field_case[i]))
- field_case[i] = tolower((unsigned char) field_case[i]);
-
- for (i = 0; i < res->numAttributes; i++)
- {
- if (strcmp(field_case, res->attDescs[i].name) == 0)
- {
- free(field_case);
- return i;
- }
- }
- free(field_case);
- return -1;
-}
-
-Oid
-PQftype(const PGresult *res, int field_num)
-{
- if (!check_field_number(res, field_num))
- return InvalidOid;
- if (res->attDescs)
- return res->attDescs[field_num].typid;
- else
- return InvalidOid;
-}
-
-int
-PQfsize(const PGresult *res, int field_num)
-{
- if (!check_field_number(res, field_num))
- return 0;
- if (res->attDescs)
- return res->attDescs[field_num].typlen;
- else
- return 0;
-}
-
-int
-PQfmod(const PGresult *res, int field_num)
-{
- if (!check_field_number(res, field_num))
- return 0;
- if (res->attDescs)
- return res->attDescs[field_num].atttypmod;
- else
- return 0;
-}
-
-char *
-PQcmdStatus(PGresult *res)
-{
- if (!res)
- return NULL;
- return res->cmdStatus;
-}
-
-/*
- PQoidStatus -
- if the last command was an INSERT, return the oid string
- if not, return ""
-*/
-char *
-PQoidStatus(const PGresult *res)
-{
- /*
- * This must be enough to hold the result. Don't laugh, this is better
- * than what this function used to do.
- */
- static char buf[24];
-
- size_t len;
-
- if (!res || !res->cmdStatus || strncmp(res->cmdStatus, "INSERT ", 7) != 0)
- return "";
-
- len = strspn(res->cmdStatus + 7, "0123456789");
- if (len > 23)
- len = 23;
- strncpy(buf, res->cmdStatus + 7, len);
- buf[len] = '\0';
-
- return buf;
-}
-
-/*
- PQoidValue -
- a perhaps preferable form of the above which just returns
- an Oid type
-*/
-Oid
-PQoidValue(const PGresult *res)
-{
- char *endptr = NULL;
- unsigned long result;
-
- if (!res || !res->cmdStatus || strncmp(res->cmdStatus, "INSERT ", 7) != 0)
- return InvalidOid;
-
-#ifdef WIN32
- SetLastError(0);
-#else
- errno = 0;
-#endif
- result = strtoul(res->cmdStatus + 7, &endptr, 10);
-
- if (!endptr || (*endptr != ' ' && *endptr != '\0') || errno == ERANGE)
- return InvalidOid;
- else
- return (Oid) result;
-}
-
-
-/*
- PQcmdTuples -
- if the last command was an INSERT/UPDATE/DELETE, return number
- of inserted/affected tuples, if not, return ""
-*/
-char *
-PQcmdTuples(PGresult *res)
-{
- char noticeBuf[128];
-
- if (!res)
- return "";
-
- if (strncmp(res->cmdStatus, "INSERT", 6) == 0 ||
- strncmp(res->cmdStatus, "DELETE", 6) == 0 ||
- strncmp(res->cmdStatus, "UPDATE", 6) == 0)
- {
- char *p = res->cmdStatus + 6;
-
- if (*p == 0)
- {
- if (res->noticeHook)
- {
- snprintf(noticeBuf, sizeof(noticeBuf),
- libpq_gettext("could not interpret result from server: %s\n"),
- res->cmdStatus);
- DONOTICE(res, noticeBuf);
- }
- return "";
- }
- p++;
- if (*(res->cmdStatus) != 'I') /* UPDATE/DELETE */
- return p;
- while (*p != ' ' && *p)
- p++; /* INSERT: skip oid */
- if (*p == 0)
- {
- if (res->noticeHook)
- {
- snprintf(noticeBuf, sizeof(noticeBuf),
- libpq_gettext("no row count available\n"));
- DONOTICE(res, noticeBuf);
- }
- return "";
- }
- p++;
- return p;
- }
- return "";
-}
-
-/*
- PQgetvalue:
- return the value of field 'field_num' of row 'tup_num'
-
- If res is binary, then the value returned is NOT a null-terminated
- ASCII string, but the binary representation in the server's native
- format.
-
- if res is not binary, a null-terminated ASCII string is returned.
-*/
-char *
-PQgetvalue(const PGresult *res, int tup_num, int field_num)
-{
- if (!check_tuple_field_number(res, tup_num, field_num))
- return NULL;
- return res->tuples[tup_num][field_num].value;
-}
-
-/* PQgetlength:
- returns the length of a field value in bytes. If res is binary,
- i.e. a result of a binary portal, then the length returned does
- NOT include the size field of the varlena. (The data returned
- by PQgetvalue doesn't either.)
-*/
-int
-PQgetlength(const PGresult *res, int tup_num, int field_num)
-{
- if (!check_tuple_field_number(res, tup_num, field_num))
- return 0;
- if (res->tuples[tup_num][field_num].len != NULL_LEN)
- return res->tuples[tup_num][field_num].len;
- else
- return 0;
-}
-
-/* PQgetisnull:
- returns the null status of a field value.
-*/
-int
-PQgetisnull(const PGresult *res, int tup_num, int field_num)
-{
- if (!check_tuple_field_number(res, tup_num, field_num))
- return 1; /* pretend it is null */
- if (res->tuples[tup_num][field_num].len == NULL_LEN)
- return 1;
- else
- return 0;
-}
-
-/* PQsetnonblocking:
- sets the PGconn's database connection non-blocking if the arg is TRUE
- or makes it non-blocking if the arg is FALSE, this will not protect
- you from PQexec(), you'll only be safe when using the non-blocking
- API
- Needs to be called only on a connected database connection.
-*/
-
-int
-PQsetnonblocking(PGconn *conn, int arg)
-{
-
- arg = (arg == TRUE) ? 1 : 0;
- /* early out if the socket is already in the state requested */
- if (arg == conn->nonblocking)
- return (0);
-
- /*
- * to guarantee constancy for flushing/query/result-polling behavior
- * we need to flush the send queue at this point in order to guarantee
- * proper behavior. this is ok because either they are making a
- * transition _from_ or _to_ blocking mode, either way we can block
- * them.
- */
- /* if we are going from blocking to non-blocking flush here */
- if (pqFlush(conn))
- return (-1);
-
- conn->nonblocking = arg;
-
- return (0);
-}
-
-/* return the blocking status of the database connection, TRUE == nonblocking,
- FALSE == blocking
-*/
-int
-PQisnonblocking(const PGconn *conn)
-{
-
- return (pqIsnonblocking(conn));
-}
-
-/* try to force data out, really only useful for non-blocking users */
-int
-PQflush(PGconn *conn)
-{
-
- return (pqFlush(conn));
-}
-
-/* try to force data out, really only useful for non-blocking users.
- * This implementation actually works for non-blocking connections */
-int
-PQsendSome(PGconn *conn)
-{
- return pqSendSome(conn);
-}