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Fixed memory leak on shutdown (Affects the embedded version & MyODBC) client/client_priv.h: Update copyright client/completion_hash.cc: Update copyright client/completion_hash.h: Update copyright client/connect_test.c: Update copyright client/errmsg.c: Update copyright client/get_password.c: Update copyright client/insert_test.c: Update copyright client/list_test.c: Update copyright client/my_readline.h: Update copyright client/mysql.cc: Update copyright client/mysqladmin.c: Update copyright client/mysqlbinlog.cc: Update copyright client/mysqlcheck.c: Update copyright client/mysqldump.c: Update copyright client/mysqlimport.c: Update copyright client/mysqlmanager-pwgen.c: Update copyright client/mysqlmanagerc.c: Update copyright client/mysqlshow.c: Update copyright client/mysqltest.c: Update copyright client/password.c: Update copyright client/readline.cc: Update copyright client/select_test.c: Update copyright client/showdb_test.c: Update copyright client/sql_string.cc: Update copyright client/sql_string.h: Update copyright client/ssl_test.c: Update copyright client/thimble.cc: Update copyright client/thread_test.c: Update copyright div/deadlock_test.c: Update copyright extra/comp_err.c: Update copyright extra/my_print_defaults.c: Update copyright extra/perror.c: Update copyright extra/replace.c: Update copyright extra/resolve_stack_dump.c: Update copyright extra/resolveip.c: Update copyright fs/database.c: Update copyright fs/libmysqlfs.c: Update copyright fs/mysqlcorbafs.c: Update copyright fs/mysqlcorbafs.h: Update copyright fs/mysqlcorbafs_test.c: Update copyright heap/_check.c: Update copyright heap/_rectest.c: Update copyright heap/heapdef.h: Update copyright heap/hp_block.c: Update copyright heap/hp_clear.c: Update copyright heap/hp_close.c: Update copyright heap/hp_create.c: Update copyright heap/hp_delete.c: Update copyright heap/hp_extra.c: Update copyright heap/hp_hash.c: Update copyright heap/hp_info.c: Update copyright heap/hp_open.c: Update copyright heap/hp_panic.c: Update copyright heap/hp_rename.c: Update copyright heap/hp_rfirst.c: Update copyright heap/hp_rkey.c: Update copyright heap/hp_rlast.c: Update copyright heap/hp_rnext.c: Update copyright heap/hp_rprev.c: Update copyright heap/hp_rrnd.c: Update copyright heap/hp_rsame.c: Update copyright heap/hp_scan.c: Update copyright heap/hp_static.c: Update copyright heap/hp_test1.c: Update copyright heap/hp_test2.c: Update copyright heap/hp_update.c: Update copyright heap/hp_write.c: Update copyright include/config-win.h: Update copyright include/dbug.h: Update copyright include/errmsg.h: Update copyright include/ft_global.h: Update copyright include/getopt.h: Update copyright include/hash.h: Update copyright include/heap.h: Update copyright include/m_ctype.h: Update copyright include/m_string.h: Update copyright include/md5.h: Update copyright include/merge.h: Update copyright include/my_alarm.h: Update copyright include/my_base.h: Update copyright include/my_bitmap.h: Update copyright include/my_dir.h: Update copyright include/my_global.h: Update copyright include/my_list.h: Update copyright include/my_net.h: Update copyright include/my_no_pthread.h: Update copyright include/my_nosys.h: Update copyright include/my_pthread.h: Update copyright include/my_sys.h: Update copyright include/my_tree.h: Update copyright include/myisam.h: Update copyright include/myisammrg.h: Update copyright include/myisampack.h: Update copyright include/mysql.h: Update copyright include/mysql_com.h: Update copyright include/mysql_embed.h: Update copyright include/mysqld_error.h: Update copyright include/mysys_err.h: Update copyright include/nisam.h: Update copyright include/queues.h: Update copyright include/raid.h: Update copyright include/sslopt-case.h: Update copyright include/sslopt-longopts.h: Update copyright include/sslopt-usage.h: Update copyright include/sslopt-vars.h: Update copyright include/t_ctype.h: Update copyright include/thr_alarm.h: Update copyright include/thr_lock.h: Update copyright include/violite.h: Update copyright isam/_cache.c: Update copyright isam/_dbug.c: Update copyright isam/_key.c: Update copyright isam/_locking.c: Update copyright isam/_packrec.c: Update copyright isam/_page.c: Update copyright isam/_search.c: Update copyright isam/_statrec.c: Update copyright isam/changed.c: Update copyright isam/close.c: Update copyright isam/create.c: Update copyright isam/delete.c: Update copyright isam/extra.c: Update copyright isam/info.c: Update copyright isam/isamchk.c: Update copyright isam/isamdef.h: Update copyright isam/log.c: Update copyright isam/open.c: Update copyright isam/panic.c: Update copyright isam/range.c: Update copyright isam/rfirst.c: Update copyright isam/rkey.c: Update copyright isam/rlast.c: Update copyright isam/rnext.c: Update copyright isam/rprev.c: Update copyright isam/rrnd.c: Update copyright isam/rsame.c: Update copyright isam/rsamepos.c: Update copyright isam/sort.c: Update copyright isam/static.c: Update copyright isam/test1.c: Update copyright isam/test2.c: Update copyright isam/test3.c: Update copyright isam/update.c: Update copyright isam/write.c: Update copyright libmysql/conf_to_src.c: Update copyright libmysql/dll.c: Update copyright libmysql/errmsg.c: Update copyright libmysql/get_password.c: Update copyright libmysql/libmysql.c: Update copyright libmysql/manager.c: Update copyright libmysql/net.c: Update copyright libmysql/password.c: Update copyright libmysqld/lib_sql.cc: Update copyright libmysqld/lib_vio.c: Update copyright libmysqld/libmysqld.c: Update copyright merge/mrg_close.c: Update copyright merge/mrg_create.c: Update copyright merge/mrg_def.h: Update copyright merge/mrg_delete.c: Update copyright merge/mrg_extra.c: Update copyright merge/mrg_info.c: Update copyright merge/mrg_locking.c: Update copyright merge/mrg_open.c: Update copyright merge/mrg_panic.c: Update copyright merge/mrg_rrnd.c: Update copyright merge/mrg_rsame.c: Update copyright merge/mrg_static.c: Update copyright merge/mrg_update.c: Update copyright myisam/ft_boolean_search.c: Update copyright myisam/ft_dump.c: Update copyright myisam/ft_eval.h: Update copyright myisam/ft_static.c: Update copyright myisam/ft_stem.c: Update copyright myisam/ft_stopwords.c: Update copyright myisam/ft_test1.h: Update copyright myisam/mi_cache.c: Update copyright myisam/mi_changed.c: Update copyright myisam/mi_check.c: Update copyright myisam/mi_checksum.c: Update copyright myisam/mi_close.c: Update copyright myisam/mi_create.c: Update copyright myisam/mi_dbug.c: Update copyright myisam/mi_delete.c: Update copyright myisam/mi_delete_all.c: Update copyright myisam/mi_delete_table.c: Update copyright myisam/mi_dynrec.c: Update copyright myisam/mi_extra.c: Update copyright myisam/mi_info.c: Update copyright myisam/mi_key.c: Update copyright myisam/mi_locking.c: Update copyright myisam/mi_log.c: Update copyright myisam/mi_open.c: Update copyright myisam/mi_packrec.c: Update copyright myisam/mi_page.c: Update copyright myisam/mi_panic.c: Update copyright myisam/mi_range.c: Update copyright myisam/mi_rename.c: Update copyright myisam/mi_rfirst.c: Update copyright myisam/mi_rlast.c: Update copyright myisam/mi_rnext_same.c: Update copyright myisam/mi_rrnd.c: Update copyright myisam/mi_rsame.c: Update copyright myisam/mi_rsamepos.c: Update copyright myisam/mi_scan.c: Update copyright myisam/mi_search.c: Update copyright myisam/mi_static.c: Update copyright myisam/mi_statrec.c: Update copyright myisam/mi_test1.c: Update copyright myisam/mi_test2.c: Update copyright myisam/mi_test3.c: Update copyright myisam/mi_unique.c: Update copyright myisam/mi_update.c: Update copyright myisam/mi_write.c: Update copyright myisam/myisamchk.c: Update copyright myisam/myisampack.c: Update copyright myisammrg/myrg_close.c: Update copyright myisammrg/myrg_create.c: Update copyright myisammrg/myrg_def.h: Update copyright myisammrg/myrg_delete.c: Update copyright myisammrg/myrg_locking.c: Update copyright myisammrg/myrg_open.c: Update copyright myisammrg/myrg_panic.c: Update copyright myisammrg/myrg_rsame.c: Update copyright myisammrg/myrg_static.c: Update copyright myisammrg/myrg_update.c: Update copyright myisammrg/myrg_write.c: Update copyright mysql-test/r/gcc296.result: Update of benchmark results mysql-test/r/innodb.result: Update of benchmark results mysql-test/r/join_outer.result: Update of benchmark results mysql-test/r/myisam.result: Update of benchmark results mysys/array.c: Update copyright mysys/charset.c: Fix for restart of character sets mysys/checksum.c: Update copyright mysys/default.c: Update copyright mysys/errors.c: Update copyright mysys/getopt.c: Cleanup mysys/getvar.c: Update copyright mysys/hash.c: Update copyright mysys/list.c: Update copyright mysys/make-conf.c: Update copyright mysys/md5.c: Update copyright mysys/mf_brkhant.c: Update copyright mysys/mf_cache.c: Update copyright mysys/mf_casecnv.c: Update copyright mysys/mf_dirname.c: Update copyright mysys/mf_fn_ext.c: Update copyright mysys/mf_format.c: Update copyright mysys/mf_getdate.c: Update copyright mysys/mf_iocache.c: Update copyright mysys/mf_iocache2.c: Update copyright mysys/mf_keycache.c: Update copyright mysys/mf_loadpath.c: Update copyright mysys/mf_pack.c: Update copyright mysys/mf_path.c: Update copyright mysys/mf_qsort.c: Update copyright mysys/mf_qsort2.c: Update copyright mysys/mf_radix.c: Update copyright mysys/mf_same.c: Update copyright mysys/mf_sleep.c: Update copyright mysys/mf_sort.c: Update copyright mysys/mf_soundex.c: Update copyright mysys/mf_stripp.c: Update copyright mysys/mf_tempfile.c: Update copyright mysys/mf_unixpath.c: Update copyright mysys/mf_util.c: Update copyright mysys/mf_wcomp.c: Update copyright mysys/mf_wfile.c: Update copyright mysys/mulalloc.c: Update copyright mysys/my_alarm.c: Update copyright mysys/my_alloc.c: Update copyright mysys/my_append.c: Update copyright mysys/my_bit.c: Update copyright mysys/my_bitmap.c: Update copyright mysys/my_chsize.c: Update copyright mysys/my_clock.c: Update copyright mysys/my_compress.c: Update copyright mysys/my_copy.c: Update copyright mysys/my_create.c: Update copyright mysys/my_delete.c: Update copyright mysys/my_div.c: Update copyright mysys/my_dup.c: Update copyright mysys/my_error.c: Update copyright mysys/my_fopen.c: Update copyright mysys/my_fstream.c: Update copyright mysys/my_getwd.c: Update copyright mysys/my_init.c: Free 'once_alloc' memory at shutdown. mysys/my_lib.c: Update copyright mysys/my_lock.c: Update copyright mysys/my_lockmem.c: Update copyright mysys/my_lread.c: Update copyright mysys/my_lwrite.c: Update copyright mysys/my_malloc.c: Update copyright mysys/my_messnc.c: Update copyright mysys/my_mkdir.c: Update copyright mysys/my_net.c: Update copyright mysys/my_once.c: Update copyright mysys/my_open.c: Update copyright mysys/my_pread.c: Update copyright mysys/my_pthread.c: Update copyright mysys/my_quick.c: Update copyright mysys/my_read.c: Update copyright mysys/my_realloc.c: Update copyright mysys/my_redel.c: Update copyright mysys/my_rename.c: Update copyright mysys/my_seek.c: Update copyright mysys/my_static.c: Update copyright mysys/my_static.h: Update copyright mysys/my_symlink.c: Update copyright mysys/my_symlink2.c: Update copyright mysys/my_tempnam.c: Update copyright mysys/my_thr_init.c: Update copyright mysys/my_vsnprintf.c: Update copyright mysys/my_wincond.c: Update copyright mysys/my_winthread.c: Update copyright mysys/my_write.c: Update copyright mysys/mysys_priv.h: Update copyright mysys/ptr_cmp.c: Update copyright mysys/queues.c: Update copyright mysys/raid.cc: Update copyright mysys/safemalloc.c: Update copyright mysys/string.c: Update copyright mysys/test_charset.c: Update copyright mysys/test_dir.c: Update copyright mysys/test_fn.c: Update copyright mysys/testhash.c: Update copyright mysys/thr_alarm.c: Update copyright mysys/thr_lock.c: Update copyright mysys/thr_mutex.c: Update copyright mysys/thr_rwlock.c: Update copyright mysys/tree.c: Update copyright mysys/typelib.c: Update copyright pstack/debug.c: Update copyright pstack/debug.h: Update copyright pstack/demangle.h: Update copyright pstack/ieee.c: Update copyright pstack/ieee.h: Update copyright pstack/pstack.c: Update copyright readline/bind.c: Cleanup empty lines readline/complete.c: Cleanup empty lines readline/display.c: Cleanup empty lines readline/funmap.c: Cleanup empty lines readline/histexpand.c: Cleanup empty lines readline/histfile.c: Cleanup empty lines readline/history.c: Cleanup empty lines readline/history.h: Cleanup empty lines readline/input.c: Cleanup empty lines readline/kill.c: Cleanup empty lines readline/readline.c: Cleanup empty lines readline/readline.h: Cleanup empty lines readline/vi_mode.c: Cleanup empty lines sql/cache_manager.cc: Update copyright sql/cache_manager.h: Update copyright sql/convert.cc: Update copyright sql/custom_conf.h: Update copyright sql/derror.cc: Update copyright sql/field.cc: Update copyright sql/field.h: Update copyright sql/field_conv.cc: Update copyright sql/filesort.cc: Update copyright sql/frm_crypt.cc: Update copyright sql/ha_berkeley.cc: Update copyright sql/ha_heap.cc: Update copyright sql/ha_heap.h: Update copyright sql/ha_innobase.cc: Update copyright sql/ha_isam.cc: Update copyright sql/ha_isam.h: Update copyright sql/ha_isammrg.cc: Update copyright sql/ha_isammrg.h: Update copyright sql/ha_myisam.cc: Update copyright sql/handler.cc: Update copyright sql/hash_filo.cc: Update copyright sql/hash_filo.h: Update copyright sql/hostname.cc: Update copyright sql/init.cc: Update copyright sql/item.cc: Update copyright sql/item.h: Update copyright sql/item_buff.cc: Update copyright sql/item_cmpfunc.cc: Update copyright sql/item_cmpfunc.h: Update copyright sql/item_create.cc: Update copyright sql/item_create.h: Update copyright sql/item_func.cc: Update copyright sql/item_strfunc.cc: Update copyright sql/item_sum.cc: Update copyright sql/item_sum.h: Update copyright sql/item_timefunc.cc: Update copyright sql/item_timefunc.h: Update copyright sql/item_uniq.cc: Update copyright sql/item_uniq.h: Update copyright sql/key.cc: Update copyright sql/lex_symbol.h: Update copyright sql/lock.cc: Update copyright sql/log.cc: Update copyright sql/log_event.cc: Update copyright sql/log_event.h: Update copyright sql/matherr.c: Update copyright sql/mf_iocache.cc: Update copyright sql/mini_client.cc: Update copyright sql/mini_client.h: Update copyright sql/my_lock.c: Update copyright sql/mysqld.cc: Update copyright sql/net_pkg.cc: Update copyright sql/net_serv.cc: Update copyright sql/opt_sum.cc: Update copyright sql/password.c: Update copyright sql/procedure.cc: Update copyright sql/procedure.h: Update copyright sql/records.cc: Update copyright sql/repl_failsafe.cc: Update copyright sql/slave.cc: Update copyright sql/slave.h: Update copyright sql/sql_acl.cc: Update copyright sql/sql_acl.h: Update copyright sql/sql_analyse.cc: Update copyright sql/sql_analyse.h: Update copyright sql/sql_base.cc: Update copyright sql/sql_cache.cc: Update copyright sql/sql_class.cc: Update copyright sql/sql_class.h: Update copyright sql/sql_crypt.cc: Update copyright sql/sql_crypt.h: Update copyright sql/sql_db.cc: Update copyright sql/sql_delete.cc: Update copyright sql/sql_handler.cc: Update copyright sql/sql_insert.cc: Update copyright sql/sql_lex.cc: Update copyright sql/sql_lex.h: Update copyright sql/sql_list.cc: Update copyright sql/sql_list.h: Update copyright sql/sql_load.cc: Update copyright sql/sql_map.cc: Update copyright sql/sql_map.h: Update copyright sql/sql_parse.cc: Update copyright sql/sql_rename.cc: Update copyright sql/sql_repl.cc: Update copyright sql/sql_select.h: Update copyright sql/sql_string.cc: Update copyright sql/sql_string.h: Update copyright sql/sql_table.cc: Update copyright sql/sql_test.cc: Update copyright sql/sql_udf.cc: Update copyright sql/sql_udf.h: Update copyright sql/stacktrace.c: Update copyright sql/structs.h: Update copyright sql/table.cc: Update copyright sql/table.h: Update copyright sql/thr_malloc.cc: Update copyright sql/time.cc: Update copyright sql/udf_example.cc: Update copyright sql/uniques.cc: Update copyright sql/unireg.cc: Update copyright sql/unireg.h: Update copyright strings/atof.c: Update copyright strings/bchange.c: Update copyright strings/bcmp.c: Update copyright strings/bcopy-duff.c: Update copyright strings/bfill.c: Update copyright strings/bmove.c: Update copyright strings/bmove512.c: Update copyright strings/bmove_upp.c: Update copyright strings/bzero.c: Update copyright strings/conf_to_src.c: Update copyright strings/ctype-big5.c: Update copyright strings/ctype-czech.c: Update copyright strings/ctype-euc_kr.c: Update copyright strings/ctype-gb2312.c: Update copyright strings/ctype-gbk.c: Update copyright strings/ctype-latin1_de.c: Update copyright strings/ctype-sjis.c: Update copyright strings/ctype-tis620.c: Update copyright strings/ctype-ujis.c: Update copyright strings/ctype.c: Update copyright strings/do_ctype.c: Update copyright strings/int2str.c: Update copyright strings/is_prefix.c: Update copyright strings/llstr.c: Update copyright strings/longlong2str.c: Update copyright strings/memcmp.c: Update copyright strings/memcpy.c: Update copyright strings/memset.c: Update copyright strings/r_strinstr.c: Update copyright strings/str2int.c: Update copyright strings/str_test.c: Update copyright strings/strappend.c: Update copyright strings/strcat.c: Update copyright strings/strcend.c: Update copyright strings/strchr.c: Update copyright strings/strcmp.c: Update copyright strings/strcont.c: Update copyright strings/strend.c: Update copyright strings/strfill.c: Update copyright strings/strings-not-used.h: Update copyright strings/strinstr.c: Update copyright strings/strlen.c: Update copyright strings/strmake.c: Update copyright strings/strmov.c: Update copyright strings/strnlen.c: Update copyright strings/strnmov.c: Update copyright strings/strrchr.c: Update copyright strings/strstr.c: Update copyright strings/strto.c: Update copyright strings/strtol.c: Update copyright strings/strtoll.c: Update copyright strings/strtoul.c: Update copyright strings/strtoull.c: Update copyright strings/strxmov.c: Update copyright strings/strxnmov.c: Update copyright strings/t_ctype.h: Update copyright strings/udiv.c: Update copyright tools/mysqlmanager.c: Update copyright vio/test-ssl.c: Update copyright vio/test-sslclient.c: Update copyright vio/test-sslserver.c: Update copyright vio/vio.c: Update copyright vio/viosocket.c: Update copyright vio/viossl.c: Update copyright vio/viosslfactories.c: Update copyright vio/viotest-ssl.c: Update copyright
201 lines
6.6 KiB
C
201 lines
6.6 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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str2int(src, radix, lower, upper, &val)
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converts the string pointed to by src to an integer and stores it in
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val. It skips leading spaces and tabs (but not newlines, formfeeds,
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backspaces), then it accepts an optional sign and a sequence of digits
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in the specified radix. The result should satisfy lower <= *val <= upper.
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The result is a pointer to the first character after the number;
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trailing spaces will NOT be skipped.
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If an error is detected, the result will be NullS, the value put
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in val will be 0, and errno will be set to
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EDOM if there are no digits
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ERANGE if the result would overflow or otherwise fail to lie
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within the specified bounds.
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Check that the bounds are right for your machine.
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This looks amazingly complicated for what you probably thought was an
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easy task. Coping with integer overflow and the asymmetric range of
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twos complement machines is anything but easy.
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So that users of atoi and atol can check whether an error occured,
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I have taken a wholly unprecedented step: errno is CLEARED if this
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call has no problems.
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*/
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#include <my_global.h>
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#include "m_string.h"
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#include "m_ctype.h"
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#include "my_sys.h" /* defines errno */
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#include <errno.h>
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#define char_val(X) (X >= '0' && X <= '9' ? X-'0' :\
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X >= 'A' && X <= 'Z' ? X-'A'+10 :\
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X >= 'a' && X <= 'z' ? X-'a'+10 :\
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'\177')
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char *str2int(register const char *src, register int radix, long int lower, long int upper, long int *val)
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{
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int sign; /* is number negative (+1) or positive (-1) */
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int n; /* number of digits yet to be converted */
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long limit; /* "largest" possible valid input */
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long scale; /* the amount to multiply next digit by */
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long sofar; /* the running value */
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register int d; /* (negative of) next digit */
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char *start;
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int digits[32]; /* Room for numbers */
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/* Make sure *val is sensible in case of error */
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*val = 0;
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/* Check that the radix is in the range 2..36 */
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#ifndef DBUG_OFF
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if (radix < 2 || radix > 36) {
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errno=EDOM;
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return NullS;
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}
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#endif
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/* The basic problem is: how do we handle the conversion of
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a number without resorting to machine-specific code to
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check for overflow? Obviously, we have to ensure that
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no calculation can overflow. We are guaranteed that the
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"lower" and "upper" arguments are valid machine integers.
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On sign-and-magnitude, twos-complement, and ones-complement
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machines all, if +|n| is representable, so is -|n|, but on
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twos complement machines the converse is not true. So the
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"maximum" representable number has a negative representative.
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Limit is set to min(-|lower|,-|upper|); this is the "largest"
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number we are concerned with. */
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/* Calculate Limit using Scale as a scratch variable */
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if ((limit = lower) > 0) limit = -limit;
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if ((scale = upper) > 0) scale = -scale;
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if (scale < limit) limit = scale;
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/* Skip leading spaces and check for a sign.
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Note: because on a 2s complement machine MinLong is a valid
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integer but |MinLong| is not, we have to keep the current
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converted value (and the scale!) as *negative* numbers,
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so the sign is the opposite of what you might expect.
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*/
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while (isspace(*src)) src++;
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sign = -1;
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if (*src == '+') src++; else
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if (*src == '-') src++, sign = 1;
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/* Skip leading zeros so that we never compute a power of radix
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in scale that we won't have a need for. Otherwise sticking
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enough 0s in front of a number could cause the multiplication
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to overflow when it neededn't.
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*/
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start=(char*) src;
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while (*src == '0') src++;
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/* Move over the remaining digits. We have to convert from left
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to left in order to avoid overflow. Answer is after last digit.
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*/
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for (n = 0; (digits[n]=char_val(*src)) < radix && n < 20; n++,src++) ;
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/* Check that there is at least one digit */
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if (start == src) {
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errno=EDOM;
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return NullS;
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}
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/* The invariant we want to maintain is that src is just
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to the right of n digits, we've converted k digits to
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sofar, scale = -radix**k, and scale < sofar < 0. Now
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if the final number is to be within the original
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Limit, we must have (to the left)*scale+sofar >= Limit,
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or (to the left)*scale >= Limit-sofar, i.e. the digits
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to the left of src must form an integer <= (Limit-sofar)/(scale).
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In particular, this is true of the next digit. In our
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incremental calculation of Limit,
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IT IS VITAL that (-|N|)/(-|D|) = |N|/|D|
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*/
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for (sofar = 0, scale = -1; --n >= 1;)
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{
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if ((long) -(d=digits[n]) < limit) {
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errno=ERANGE;
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return NullS;
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}
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limit = (limit+d)/radix, sofar += d*scale; scale *= radix;
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}
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if (n == 0)
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{
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if ((long) -(d=digits[n]) < limit) /* get last digit */
|
|
{
|
|
errno=ERANGE;
|
|
return NullS;
|
|
}
|
|
sofar+=d*scale;
|
|
}
|
|
|
|
/* Now it might still happen that sofar = -32768 or its equivalent,
|
|
so we can't just multiply by the sign and check that the result
|
|
is in the range lower..upper. All of this caution is a right
|
|
pain in the neck. If only there were a standard routine which
|
|
says generate thus and such a signal on integer overflow...
|
|
But not enough machines can do it *SIGH*.
|
|
*/
|
|
if (sign < 0)
|
|
{
|
|
if (sofar < -LONG_MAX || (sofar= -sofar) > upper)
|
|
{
|
|
errno=ERANGE;
|
|
return NullS;
|
|
}
|
|
}
|
|
else if (sofar < lower)
|
|
{
|
|
errno=ERANGE;
|
|
return NullS;
|
|
}
|
|
*val = sofar;
|
|
errno=0; /* indicate that all went well */
|
|
return (char*) src;
|
|
}
|
|
|
|
/* Theese are so slow compared with ordinary, optimized atoi */
|
|
|
|
#ifdef WANT_OUR_ATOI
|
|
|
|
int atoi(const char *src)
|
|
{
|
|
long val;
|
|
str2int(src, 10, (long) INT_MIN, (long) INT_MAX, &val);
|
|
return (int) val;
|
|
}
|
|
|
|
|
|
long atol(const char *src)
|
|
{
|
|
long val;
|
|
str2int(src, 10, LONG_MIN, LONG_MAX, &val);
|
|
return val;
|
|
}
|
|
|
|
#endif /* WANT_OUR_ATOI */
|