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Diffstat (limited to 'contrib/perl5/ext/DB_File/DB_File.xs')
| -rw-r--r-- | contrib/perl5/ext/DB_File/DB_File.xs | 1497 |
1 files changed, 1497 insertions, 0 deletions
diff --git a/contrib/perl5/ext/DB_File/DB_File.xs b/contrib/perl5/ext/DB_File/DB_File.xs new file mode 100644 index 0000000..c661023 --- /dev/null +++ b/contrib/perl5/ext/DB_File/DB_File.xs @@ -0,0 +1,1497 @@ +/* + + DB_File.xs -- Perl 5 interface to Berkeley DB + + written by Paul Marquess (pmarquess@bfsec.bt.co.uk) + last modified 16th May 1998 + version 1.60 + + All comments/suggestions/problems are welcome + + Copyright (c) 1995, 1996, 1997, 1998 Paul Marquess. All rights reserved. + This program is free software; you can redistribute it and/or + modify it under the same terms as Perl itself. + + Changes: + 0.1 - Initial Release + 0.2 - No longer bombs out if dbopen returns an error. + 0.3 - Added some support for multiple btree compares + 1.0 - Complete support for multiple callbacks added. + Fixed a problem with pushing a value onto an empty list. + 1.01 - Fixed a SunOS core dump problem. + The return value from TIEHASH wasn't set to NULL when + dbopen returned an error. + 1.02 - Use ALIAS to define TIEARRAY. + Removed some redundant commented code. + Merged OS2 code into the main distribution. + Allow negative subscripts with RECNO interface. + Changed the default flags to O_CREAT|O_RDWR + 1.03 - Added EXISTS + 1.04 - fixed a couple of bugs in hash_cb. Patches supplied by + Dave Hammen, hammen@gothamcity.jsc.nasa.gov + 1.05 - Added logic to allow prefix & hash types to be specified via + Makefile.PL + 1.06 - Minor namespace cleanup: Localized PrintBtree. + 1.07 - Fixed bug with RECNO, where bval wasn't defaulting to "\n". + 1.08 - No change to DB_File.xs + 1.09 - Default mode for dbopen changed to 0666 + 1.10 - Fixed fd method so that it still returns -1 for + in-memory files when db 1.86 is used. + 1.11 - No change to DB_File.xs + 1.12 - No change to DB_File.xs + 1.13 - Tidied up a few casts. + 1.14 - Made it illegal to tie an associative array to a RECNO + database and an ordinary array to a HASH or BTREE database. + 1.50 - Make work with both DB 1.x or DB 2.x + 1.51 - Fixed a bug in mapping 1.x O_RDONLY flag to 2.x DB_RDONLY equivalent + 1.52 - Patch from Gisle Aas <gisle@aas.no> to suppress "use of + undefined value" warning with db_get and db_seq. + 1.53 - Added DB_RENUMBER to flags for recno. + 1.54 - Fixed bug in the fd method + 1.55 - Fix for AIX from Jarkko Hietaniemi + 1.56 - No change to DB_File.xs + 1.57 - added the #undef op to allow building with Threads support. + 1.58 - Fixed a problem with the use of sv_setpvn. When the + size is specified as 0, it does a strlen on the data. + This was ok for DB 1.x, but isn't for DB 2.x. + 1.59 - No change to DB_File.xs + 1.60 - Some code tidy up + + + +*/ + +#include "EXTERN.h" +#include "perl.h" +#include "XSUB.h" + +/* Being the Berkeley DB we prefer the <sys/cdefs.h> (which will be + * shortly #included by the <db.h>) __attribute__ to the possibly + * already defined __attribute__, for example by GNUC or by Perl. */ + +#undef __attribute__ + +/* If Perl has been compiled with Threads support,the symbol op will + be defined here. This clashes with a field name in db.h, so get rid of it. + */ +#ifdef op +#undef op +#endif +#include <db.h> + +#include <fcntl.h> + +/* #define TRACE */ + + + +#ifdef DB_VERSION_MAJOR + +/* map version 2 features & constants onto their version 1 equivalent */ + +#ifdef DB_Prefix_t +#undef DB_Prefix_t +#endif +#define DB_Prefix_t size_t + +#ifdef DB_Hash_t +#undef DB_Hash_t +#endif +#define DB_Hash_t u_int32_t + +/* DBTYPE stays the same */ +/* HASHINFO, RECNOINFO and BTREEINFO map to DB_INFO */ +typedef DB_INFO INFO ; + +/* version 2 has db_recno_t in place of recno_t */ +typedef db_recno_t recno_t; + + +#define R_CURSOR DB_SET_RANGE +#define R_FIRST DB_FIRST +#define R_IAFTER DB_AFTER +#define R_IBEFORE DB_BEFORE +#define R_LAST DB_LAST +#define R_NEXT DB_NEXT +#define R_NOOVERWRITE DB_NOOVERWRITE +#define R_PREV DB_PREV +#define R_SETCURSOR 0 +#define R_RECNOSYNC 0 +#define R_FIXEDLEN DB_FIXEDLEN +#define R_DUP DB_DUP + +#define db_HA_hash h_hash +#define db_HA_ffactor h_ffactor +#define db_HA_nelem h_nelem +#define db_HA_bsize db_pagesize +#define db_HA_cachesize db_cachesize +#define db_HA_lorder db_lorder + +#define db_BT_compare bt_compare +#define db_BT_prefix bt_prefix +#define db_BT_flags flags +#define db_BT_psize db_pagesize +#define db_BT_cachesize db_cachesize +#define db_BT_lorder db_lorder +#define db_BT_maxkeypage +#define db_BT_minkeypage + + +#define db_RE_reclen re_len +#define db_RE_flags flags +#define db_RE_bval re_pad +#define db_RE_bfname re_source +#define db_RE_psize db_pagesize +#define db_RE_cachesize db_cachesize +#define db_RE_lorder db_lorder + +#define TXN NULL, + +#define do_SEQ(db, key, value, flag) (db->cursor->c_get)(db->cursor, &key, &value, flag) + + +#define DBT_flags(x) x.flags = 0 +#define DB_flags(x, v) x |= v + +#else /* db version 1.x */ + +typedef union INFO { + HASHINFO hash ; + RECNOINFO recno ; + BTREEINFO btree ; + } INFO ; + + +#ifdef mDB_Prefix_t +#ifdef DB_Prefix_t +#undef DB_Prefix_t +#endif +#define DB_Prefix_t mDB_Prefix_t +#endif + +#ifdef mDB_Hash_t +#ifdef DB_Hash_t +#undef DB_Hash_t +#endif +#define DB_Hash_t mDB_Hash_t +#endif + +#define db_HA_hash hash.hash +#define db_HA_ffactor hash.ffactor +#define db_HA_nelem hash.nelem +#define db_HA_bsize hash.bsize +#define db_HA_cachesize hash.cachesize +#define db_HA_lorder hash.lorder + +#define db_BT_compare btree.compare +#define db_BT_prefix btree.prefix +#define db_BT_flags btree.flags +#define db_BT_psize btree.psize +#define db_BT_cachesize btree.cachesize +#define db_BT_lorder btree.lorder +#define db_BT_maxkeypage btree.maxkeypage +#define db_BT_minkeypage btree.minkeypage + +#define db_RE_reclen recno.reclen +#define db_RE_flags recno.flags +#define db_RE_bval recno.bval +#define db_RE_bfname recno.bfname +#define db_RE_psize recno.psize +#define db_RE_cachesize recno.cachesize +#define db_RE_lorder recno.lorder + +#define TXN + +#define do_SEQ(db, key, value, flag) (db->dbp->seq)(db->dbp, &key, &value, flag) +#define DBT_flags(x) +#define DB_flags(x, v) + +#endif /* db version 1 */ + + + +#define db_DELETE(db, key, flags) ((db->dbp)->del)(db->dbp, TXN &key, flags) +#define db_STORE(db, key, value, flags) ((db->dbp)->put)(db->dbp, TXN &key, &value, flags) +#define db_FETCH(db, key, flags) ((db->dbp)->get)(db->dbp, TXN &key, &value, flags) + +#define db_sync(db, flags) ((db->dbp)->sync)(db->dbp, flags) +#define db_get(db, key, value, flags) ((db->dbp)->get)(db->dbp, TXN &key, &value, flags) +#ifdef DB_VERSION_MAJOR +#define db_DESTROY(db) ((db->dbp)->close)(db->dbp, 0) +#define db_close(db) ((db->dbp)->close)(db->dbp, 0) +#define db_del(db, key, flags) ((flags & R_CURSOR) \ + ? ((db->cursor)->c_del)(db->cursor, 0) \ + : ((db->dbp)->del)(db->dbp, NULL, &key, flags) ) + +#else + +#define db_DESTROY(db) ((db->dbp)->close)(db->dbp) +#define db_close(db) ((db->dbp)->close)(db->dbp) +#define db_del(db, key, flags) ((db->dbp)->del)(db->dbp, &key, flags) +#define db_put(db, key, value, flags) ((db->dbp)->put)(db->dbp, &key, &value, flags) + +#endif + +#define db_seq(db, key, value, flags) do_SEQ(db, key, value, flags) + +typedef struct { + DBTYPE type ; + DB * dbp ; + SV * compare ; + SV * prefix ; + SV * hash ; + int in_memory ; + INFO info ; +#ifdef DB_VERSION_MAJOR + DBC * cursor ; +#endif + } DB_File_type; + +typedef DB_File_type * DB_File ; +typedef DBT DBTKEY ; + +#define my_sv_setpvn(sv, d, s) sv_setpvn(sv, (s ? d : (void*)""), s) + +#define OutputValue(arg, name) \ + { if (RETVAL == 0) { \ + my_sv_setpvn(arg, name.data, name.size) ; \ + } \ + } + +#define OutputKey(arg, name) \ + { if (RETVAL == 0) \ + { \ + if (db->type != DB_RECNO) { \ + my_sv_setpvn(arg, name.data, name.size); \ + } \ + else \ + sv_setiv(arg, (I32)*(I32*)name.data - 1); \ + } \ + } + + +/* Internal Global Data */ +static recno_t Value ; +static recno_t zero = 0 ; +static DB_File CurrentDB ; +static DBTKEY empty ; + +#ifdef DB_VERSION_MAJOR + +static int +db_put(db, key, value, flags) +DB_File db ; +DBTKEY key ; +DBT value ; +u_int flags ; + +{ + int status ; + + if (flags & R_CURSOR) { + status = ((db->cursor)->c_del)(db->cursor, 0); + if (status != 0) + return status ; + + flags &= ~R_CURSOR ; + } + + return ((db->dbp)->put)(db->dbp, NULL, &key, &value, flags) ; + +} + +#endif /* DB_VERSION_MAJOR */ + +static void +GetVersionInfo() +{ + SV * ver_sv = perl_get_sv("DB_File::db_version", TRUE) ; +#ifdef DB_VERSION_MAJOR + int Major, Minor, Patch ; + + (void)db_version(&Major, &Minor, &Patch) ; + + /* check that libdb is recent enough */ + if (Major == 2 && Minor == 0 && Patch < 5) + croak("DB_File needs Berkeley DB 2.0.5 or greater, you have %d.%d.%d\n", + Major, Minor, Patch) ; + +#if PATCHLEVEL > 3 + sv_setpvf(ver_sv, "%d.%d", Major, Minor) ; +#else + { + char buffer[40] ; + sprintf(buffer, "%d.%d", Major, Minor) ; + sv_setpv(ver_sv, buffer) ; + } +#endif + +#else + sv_setiv(ver_sv, 1) ; +#endif + +} + + +static int +btree_compare(key1, key2) +const DBT * key1 ; +const DBT * key2 ; +{ + dSP ; + void * data1, * data2 ; + int retval ; + int count ; + + data1 = key1->data ; + data2 = key2->data ; + + /* As newSVpv will assume that the data pointer is a null terminated C + string if the size parameter is 0, make sure that data points to an + empty string if the length is 0 + */ + if (key1->size == 0) + data1 = "" ; + if (key2->size == 0) + data2 = "" ; + + ENTER ; + SAVETMPS; + + PUSHMARK(SP) ; + EXTEND(SP,2) ; + PUSHs(sv_2mortal(newSVpv(data1,key1->size))); + PUSHs(sv_2mortal(newSVpv(data2,key2->size))); + PUTBACK ; + + count = perl_call_sv(CurrentDB->compare, G_SCALAR); + + SPAGAIN ; + + if (count != 1) + croak ("DB_File btree_compare: expected 1 return value from compare sub, got %d\n", count) ; + + retval = POPi ; + + PUTBACK ; + FREETMPS ; + LEAVE ; + return (retval) ; + +} + +static DB_Prefix_t +btree_prefix(key1, key2) +const DBT * key1 ; +const DBT * key2 ; +{ + dSP ; + void * data1, * data2 ; + int retval ; + int count ; + + data1 = key1->data ; + data2 = key2->data ; + + /* As newSVpv will assume that the data pointer is a null terminated C + string if the size parameter is 0, make sure that data points to an + empty string if the length is 0 + */ + if (key1->size == 0) + data1 = "" ; + if (key2->size == 0) + data2 = "" ; + + ENTER ; + SAVETMPS; + + PUSHMARK(SP) ; + EXTEND(SP,2) ; + PUSHs(sv_2mortal(newSVpv(data1,key1->size))); + PUSHs(sv_2mortal(newSVpv(data2,key2->size))); + PUTBACK ; + + count = perl_call_sv(CurrentDB->prefix, G_SCALAR); + + SPAGAIN ; + + if (count != 1) + croak ("DB_File btree_prefix: expected 1 return value from prefix sub, got %d\n", count) ; + + retval = POPi ; + + PUTBACK ; + FREETMPS ; + LEAVE ; + + return (retval) ; +} + +static DB_Hash_t +hash_cb(data, size) +const void * data ; +size_t size ; +{ + dSP ; + int retval ; + int count ; + + if (size == 0) + data = "" ; + + /* DGH - Next two lines added to fix corrupted stack problem */ + ENTER ; + SAVETMPS; + + PUSHMARK(SP) ; + + XPUSHs(sv_2mortal(newSVpv((char*)data,size))); + PUTBACK ; + + count = perl_call_sv(CurrentDB->hash, G_SCALAR); + + SPAGAIN ; + + if (count != 1) + croak ("DB_File hash_cb: expected 1 return value from hash sub, got %d\n", count) ; + + retval = POPi ; + + PUTBACK ; + FREETMPS ; + LEAVE ; + + return (retval) ; +} + + +#ifdef TRACE + +static void +PrintHash(hash) +INFO * hash ; +{ + printf ("HASH Info\n") ; + printf (" hash = %s\n", + (hash->db_HA_hash != NULL ? "redefined" : "default")) ; + printf (" bsize = %d\n", hash->db_HA_bsize) ; + printf (" ffactor = %d\n", hash->db_HA_ffactor) ; + printf (" nelem = %d\n", hash->db_HA_nelem) ; + printf (" cachesize = %d\n", hash->db_HA_cachesize) ; + printf (" lorder = %d\n", hash->db_HA_lorder) ; + +} + +static void +PrintRecno(recno) +INFO * recno ; +{ + printf ("RECNO Info\n") ; + printf (" flags = %d\n", recno->db_RE_flags) ; + printf (" cachesize = %d\n", recno->db_RE_cachesize) ; + printf (" psize = %d\n", recno->db_RE_psize) ; + printf (" lorder = %d\n", recno->db_RE_lorder) ; + printf (" reclen = %ul\n", (unsigned long)recno->db_RE_reclen) ; + printf (" bval = %d 0x%x\n", recno->db_RE_bval, recno->db_RE_bval) ; + printf (" bfname = %d [%s]\n", recno->db_RE_bfname, recno->db_RE_bfname) ; +} + +static void +PrintBtree(btree) +INFO * btree ; +{ + printf ("BTREE Info\n") ; + printf (" compare = %s\n", + (btree->db_BT_compare ? "redefined" : "default")) ; + printf (" prefix = %s\n", + (btree->db_BT_prefix ? "redefined" : "default")) ; + printf (" flags = %d\n", btree->db_BT_flags) ; + printf (" cachesize = %d\n", btree->db_BT_cachesize) ; + printf (" psize = %d\n", btree->db_BT_psize) ; +#ifndef DB_VERSION_MAJOR + printf (" maxkeypage = %d\n", btree->db_BT_maxkeypage) ; + printf (" minkeypage = %d\n", btree->db_BT_minkeypage) ; +#endif + printf (" lorder = %d\n", btree->db_BT_lorder) ; +} + +#else + +#define PrintRecno(recno) +#define PrintHash(hash) +#define PrintBtree(btree) + +#endif /* TRACE */ + + +static I32 +GetArrayLength(db) +DB_File db ; +{ + DBT key ; + DBT value ; + int RETVAL ; + + DBT_flags(key) ; + DBT_flags(value) ; + RETVAL = do_SEQ(db, key, value, R_LAST) ; + if (RETVAL == 0) + RETVAL = *(I32 *)key.data ; + else /* No key means empty file */ + RETVAL = 0 ; + + return ((I32)RETVAL) ; +} + +static recno_t +GetRecnoKey(db, value) +DB_File db ; +I32 value ; +{ + if (value < 0) { + /* Get the length of the array */ + I32 length = GetArrayLength(db) ; + + /* check for attempt to write before start of array */ + if (length + value + 1 <= 0) + croak("Modification of non-creatable array value attempted, subscript %ld", (long)value) ; + + value = length + value + 1 ; + } + else + ++ value ; + + return value ; +} + +static DB_File +ParseOpenInfo(isHASH, name, flags, mode, sv) +int isHASH ; +char * name ; +int flags ; +int mode ; +SV * sv ; +{ + SV ** svp; + HV * action ; + DB_File RETVAL = (DB_File)safemalloc(sizeof(DB_File_type)) ; + void * openinfo = NULL ; + INFO * info = &RETVAL->info ; + +/* printf("In ParseOpenInfo name=[%s] flags=[%d] mode = [%d]\n", name, flags, mode) ; */ + Zero(RETVAL, 1, DB_File_type) ; + + /* Default to HASH */ + RETVAL->hash = RETVAL->compare = RETVAL->prefix = NULL ; + RETVAL->type = DB_HASH ; + + /* DGH - Next line added to avoid SEGV on existing hash DB */ + CurrentDB = RETVAL; + + /* fd for 1.86 hash in memory files doesn't return -1 like 1.85 */ + RETVAL->in_memory = (name == NULL) ; + + if (sv) + { + if (! SvROK(sv) ) + croak ("type parameter is not a reference") ; + + svp = hv_fetch( (HV*)SvRV(sv), "GOT", 3, FALSE) ; + if (svp && SvOK(*svp)) + action = (HV*) SvRV(*svp) ; + else + croak("internal error") ; + + if (sv_isa(sv, "DB_File::HASHINFO")) + { + + if (!isHASH) + croak("DB_File can only tie an associative array to a DB_HASH database") ; + + RETVAL->type = DB_HASH ; + openinfo = (void*)info ; + + svp = hv_fetch(action, "hash", 4, FALSE); + + if (svp && SvOK(*svp)) + { + info->db_HA_hash = hash_cb ; + RETVAL->hash = newSVsv(*svp) ; + } + else + info->db_HA_hash = NULL ; + + svp = hv_fetch(action, "ffactor", 7, FALSE); + info->db_HA_ffactor = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "nelem", 5, FALSE); + info->db_HA_nelem = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "bsize", 5, FALSE); + info->db_HA_bsize = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "cachesize", 9, FALSE); + info->db_HA_cachesize = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "lorder", 6, FALSE); + info->db_HA_lorder = svp ? SvIV(*svp) : 0; + + PrintHash(info) ; + } + else if (sv_isa(sv, "DB_File::BTREEINFO")) + { + if (!isHASH) + croak("DB_File can only tie an associative array to a DB_BTREE database"); + + RETVAL->type = DB_BTREE ; + openinfo = (void*)info ; + + svp = hv_fetch(action, "compare", 7, FALSE); + if (svp && SvOK(*svp)) + { + info->db_BT_compare = btree_compare ; + RETVAL->compare = newSVsv(*svp) ; + } + else + info->db_BT_compare = NULL ; + + svp = hv_fetch(action, "prefix", 6, FALSE); + if (svp && SvOK(*svp)) + { + info->db_BT_prefix = btree_prefix ; + RETVAL->prefix = newSVsv(*svp) ; + } + else + info->db_BT_prefix = NULL ; + + svp = hv_fetch(action, "flags", 5, FALSE); + info->db_BT_flags = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "cachesize", 9, FALSE); + info->db_BT_cachesize = svp ? SvIV(*svp) : 0; + +#ifndef DB_VERSION_MAJOR + svp = hv_fetch(action, "minkeypage", 10, FALSE); + info->btree.minkeypage = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "maxkeypage", 10, FALSE); + info->btree.maxkeypage = svp ? SvIV(*svp) : 0; +#endif + + svp = hv_fetch(action, "psize", 5, FALSE); + info->db_BT_psize = svp ? SvIV(*svp) : 0; + + svp = hv_fetch(action, "lorder", 6, FALSE); + info->db_BT_lorder = svp ? SvIV(*svp) : 0; + + PrintBtree(info) ; + + } + else if (sv_isa(sv, "DB_File::RECNOINFO")) + { + if (isHASH) + croak("DB_File can only tie an array to a DB_RECNO database"); + + RETVAL->type = DB_RECNO ; + openinfo = (void *)info ; + + info->db_RE_flags = 0 ; + + svp = hv_fetch(action, "flags", 5, FALSE); + info->db_RE_flags = (u_long) (svp ? SvIV(*svp) : 0); + + svp = hv_fetch(action, "reclen", 6, FALSE); + info->db_RE_reclen = (size_t) (svp ? SvIV(*svp) : 0); + + svp = hv_fetch(action, "cachesize", 9, FALSE); + info->db_RE_cachesize = (u_int) (svp ? SvIV(*svp) : 0); + + svp = hv_fetch(action, "psize", 5, FALSE); + info->db_RE_psize = (u_int) (svp ? SvIV(*svp) : 0); + + svp = hv_fetch(action, "lorder", 6, FALSE); + info->db_RE_lorder = (int) (svp ? SvIV(*svp) : 0); + +#ifdef DB_VERSION_MAJOR + info->re_source = name ; + name = NULL ; +#endif + svp = hv_fetch(action, "bfname", 6, FALSE); + if (svp && SvOK(*svp)) { + char * ptr = SvPV(*svp,PL_na) ; +#ifdef DB_VERSION_MAJOR + name = (char*) PL_na ? ptr : NULL ; +#else + info->db_RE_bfname = (char*) (PL_na ? ptr : NULL) ; +#endif + } + else +#ifdef DB_VERSION_MAJOR + name = NULL ; +#else + info->db_RE_bfname = NULL ; +#endif + + svp = hv_fetch(action, "bval", 4, FALSE); +#ifdef DB_VERSION_MAJOR + if (svp && SvOK(*svp)) + { + int value ; + if (SvPOK(*svp)) + value = (int)*SvPV(*svp, PL_na) ; + else + value = SvIV(*svp) ; + + if (info->flags & DB_FIXEDLEN) { + info->re_pad = value ; + info->flags |= DB_PAD ; + } + else { + info->re_delim = value ; + info->flags |= DB_DELIMITER ; + } + + } +#else + if (svp && SvOK(*svp)) + { + if (SvPOK(*svp)) + info->db_RE_bval = (u_char)*SvPV(*svp, PL_na) ; + else + info->db_RE_bval = (u_char)(unsigned long) SvIV(*svp) ; + DB_flags(info->flags, DB_DELIMITER) ; + + } + else + { + if (info->db_RE_flags & R_FIXEDLEN) + info->db_RE_bval = (u_char) ' ' ; + else + info->db_RE_bval = (u_char) '\n' ; + DB_flags(info->flags, DB_DELIMITER) ; + } +#endif + +#ifdef DB_RENUMBER + info->flags |= DB_RENUMBER ; +#endif + + PrintRecno(info) ; + } + else + croak("type is not of type DB_File::HASHINFO, DB_File::BTREEINFO or DB_File::RECNOINFO"); + } + + + /* OS2 Specific Code */ +#ifdef OS2 +#ifdef __EMX__ + flags |= O_BINARY; +#endif /* __EMX__ */ +#endif /* OS2 */ + +#ifdef DB_VERSION_MAJOR + + { + int Flags = 0 ; + int status ; + + /* Map 1.x flags to 2.x flags */ + if ((flags & O_CREAT) == O_CREAT) + Flags |= DB_CREATE ; + +#ifdef O_NONBLOCK + if ((flags & O_NONBLOCK) == O_NONBLOCK) + Flags |= DB_EXCL ; +#endif + +#if O_RDONLY == 0 + if (flags == O_RDONLY) +#else + if (flags & O_RDONLY) == O_RDONLY) +#endif + Flags |= DB_RDONLY ; + +#ifdef O_NONBLOCK + if ((flags & O_TRUNC) == O_TRUNC) + Flags |= DB_TRUNCATE ; +#endif + + status = db_open(name, RETVAL->type, Flags, mode, NULL, openinfo, &RETVAL->dbp) ; + if (status == 0) + status = (RETVAL->dbp->cursor)(RETVAL->dbp, NULL, &RETVAL->cursor) ; + + if (status) + RETVAL->dbp = NULL ; + + } +#else + RETVAL->dbp = dbopen(name, flags, mode, RETVAL->type, openinfo) ; +#endif + + return (RETVAL) ; +} + + +static int +not_here(s) +char *s; +{ + croak("DB_File::%s not implemented on this architecture", s); + return -1; +} + +static double +constant(name, arg) +char *name; +int arg; +{ + errno = 0; + switch (*name) { + case 'A': + break; + case 'B': + if (strEQ(name, "BTREEMAGIC")) +#ifdef BTREEMAGIC + return BTREEMAGIC; +#else + goto not_there; +#endif + if (strEQ(name, "BTREEVERSION")) +#ifdef BTREEVERSION + return BTREEVERSION; +#else + goto not_there; +#endif + break; + case 'C': + break; + case 'D': + if (strEQ(name, "DB_LOCK")) +#ifdef DB_LOCK + return DB_LOCK; +#else + goto not_there; +#endif + if (strEQ(name, "DB_SHMEM")) +#ifdef DB_SHMEM + return DB_SHMEM; +#else + goto not_there; +#endif + if (strEQ(name, "DB_TXN")) +#ifdef DB_TXN + return (U32)DB_TXN; +#else + goto not_there; +#endif + break; + case 'E': + break; + case 'F': + break; + case 'G': + break; + case 'H': + if (strEQ(name, "HASHMAGIC")) +#ifdef HASHMAGIC + return HASHMAGIC; +#else + goto not_there; +#endif + if (strEQ(name, "HASHVERSION")) +#ifdef HASHVERSION + return HASHVERSION; +#else + goto not_there; +#endif + break; + case 'I': + break; + case 'J': + break; + case 'K': + break; + case 'L': + break; + case 'M': + if (strEQ(name, "MAX_PAGE_NUMBER")) +#ifdef MAX_PAGE_NUMBER + return (U32)MAX_PAGE_NUMBER; +#else + goto not_there; +#endif + if (strEQ(name, "MAX_PAGE_OFFSET")) +#ifdef MAX_PAGE_OFFSET + return MAX_PAGE_OFFSET; +#else + goto not_there; +#endif + if (strEQ(name, "MAX_REC_NUMBER")) +#ifdef MAX_REC_NUMBER + return (U32)MAX_REC_NUMBER; +#else + goto not_there; +#endif + break; + case 'N': + break; + case 'O': + break; + case 'P': + break; + case 'Q': + break; + case 'R': + if (strEQ(name, "RET_ERROR")) +#ifdef RET_ERROR + return RET_ERROR; +#else + goto not_there; +#endif + if (strEQ(name, "RET_SPECIAL")) +#ifdef RET_SPECIAL + return RET_SPECIAL; +#else + goto not_there; +#endif + if (strEQ(name, "RET_SUCCESS")) +#ifdef RET_SUCCESS + return RET_SUCCESS; +#else + goto not_there; +#endif + if (strEQ(name, "R_CURSOR")) +#ifdef R_CURSOR + return R_CURSOR; +#else + goto not_there; +#endif + if (strEQ(name, "R_DUP")) +#ifdef R_DUP + return R_DUP; +#else + goto not_there; +#endif + if (strEQ(name, "R_FIRST")) +#ifdef R_FIRST + return R_FIRST; +#else + goto not_there; +#endif + if (strEQ(name, "R_FIXEDLEN")) +#ifdef R_FIXEDLEN + return R_FIXEDLEN; +#else + goto not_there; +#endif + if (strEQ(name, "R_IAFTER")) +#ifdef R_IAFTER + return R_IAFTER; +#else + goto not_there; +#endif + if (strEQ(name, "R_IBEFORE")) +#ifdef R_IBEFORE + return R_IBEFORE; +#else + goto not_there; +#endif + if (strEQ(name, "R_LAST")) +#ifdef R_LAST + return R_LAST; +#else + goto not_there; +#endif + if (strEQ(name, "R_NEXT")) +#ifdef R_NEXT + return R_NEXT; +#else + goto not_there; +#endif + if (strEQ(name, "R_NOKEY")) +#ifdef R_NOKEY + return R_NOKEY; +#else + goto not_there; +#endif + if (strEQ(name, "R_NOOVERWRITE")) +#ifdef R_NOOVERWRITE + return R_NOOVERWRITE; +#else + goto not_there; +#endif + if (strEQ(name, "R_PREV")) +#ifdef R_PREV + return R_PREV; +#else + goto not_there; +#endif + if (strEQ(name, "R_RECNOSYNC")) +#ifdef R_RECNOSYNC + return R_RECNOSYNC; +#else + goto not_there; +#endif + if (strEQ(name, "R_SETCURSOR")) +#ifdef R_SETCURSOR + return R_SETCURSOR; +#else + goto not_there; +#endif + if (strEQ(name, "R_SNAPSHOT")) +#ifdef R_SNAPSHOT + return R_SNAPSHOT; +#else + goto not_there; +#endif + break; + case 'S': + break; + case 'T': + break; + case 'U': + break; + case 'V': + break; + case 'W': + break; + case 'X': + break; + case 'Y': + break; + case 'Z': + break; + case '_': + break; + } + errno = EINVAL; + return 0; + +not_there: + errno = ENOENT; + return 0; +} + +MODULE = DB_File PACKAGE = DB_File PREFIX = db_ + +BOOT: + { + GetVersionInfo() ; + + empty.data = &zero ; + empty.size = sizeof(recno_t) ; + DBT_flags(empty) ; + } + +double +constant(name,arg) + char * name + int arg + + +DB_File +db_DoTie_(isHASH, dbtype, name=undef, flags=O_CREAT|O_RDWR, mode=0666, type=DB_HASH) + int isHASH + char * dbtype + int flags + int mode + CODE: + { + char * name = (char *) NULL ; + SV * sv = (SV *) NULL ; + + if (items >= 3 && SvOK(ST(2))) + name = (char*) SvPV(ST(2), PL_na) ; + + if (items == 6) + sv = ST(5) ; + + RETVAL = ParseOpenInfo(isHASH, name, flags, mode, sv) ; + if (RETVAL->dbp == NULL) + RETVAL = NULL ; + } + OUTPUT: + RETVAL + +int +db_DESTROY(db) + DB_File db + INIT: + CurrentDB = db ; + CLEANUP: + if (db->hash) + SvREFCNT_dec(db->hash) ; + if (db->compare) + SvREFCNT_dec(db->compare) ; + if (db->prefix) + SvREFCNT_dec(db->prefix) ; + Safefree(db) ; +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; +#endif + + +int +db_DELETE(db, key, flags=0) + DB_File db + DBTKEY key + u_int flags + INIT: + CurrentDB = db ; + + +int +db_EXISTS(db, key) + DB_File db + DBTKEY key + CODE: + { + DBT value ; + + DBT_flags(value) ; + CurrentDB = db ; + RETVAL = (((db->dbp)->get)(db->dbp, TXN &key, &value, 0) == 0) ; + } + OUTPUT: + RETVAL + +int +db_FETCH(db, key, flags=0) + DB_File db + DBTKEY key + u_int flags + CODE: + { + DBT value ; + + DBT_flags(value) ; + CurrentDB = db ; + /* RETVAL = ((db->dbp)->get)(db->dbp, TXN &key, &value, flags) ; */ + RETVAL = db_get(db, key, value, flags) ; + ST(0) = sv_newmortal(); + OutputValue(ST(0), value) + } + +int +db_STORE(db, key, value, flags=0) + DB_File db + DBTKEY key + DBT value + u_int flags + INIT: + CurrentDB = db ; + + +int +db_FIRSTKEY(db) + DB_File db + CODE: + { + DBTKEY key ; + DBT value ; + DB * Db = db->dbp ; + + DBT_flags(key) ; + DBT_flags(value) ; + CurrentDB = db ; + RETVAL = do_SEQ(db, key, value, R_FIRST) ; + ST(0) = sv_newmortal(); + OutputKey(ST(0), key) ; + } + +int +db_NEXTKEY(db, key) + DB_File db + DBTKEY key + CODE: + { + DBT value ; + DB * Db = db->dbp ; + + DBT_flags(value) ; + CurrentDB = db ; + RETVAL = do_SEQ(db, key, value, R_NEXT) ; + ST(0) = sv_newmortal(); + OutputKey(ST(0), key) ; + } + +# +# These would be nice for RECNO +# + +int +unshift(db, ...) + DB_File db + ALIAS: UNSHIFT = 1 + CODE: + { + DBTKEY key ; + DBT value ; + int i ; + int One ; + DB * Db = db->dbp ; + + DBT_flags(key) ; + DBT_flags(value) ; + CurrentDB = db ; +#ifdef DB_VERSION_MAJOR + /* get the first value */ + RETVAL = do_SEQ(db, key, value, DB_FIRST) ; + RETVAL = 0 ; +#else + RETVAL = -1 ; +#endif + for (i = items-1 ; i > 0 ; --i) + { + value.data = SvPV(ST(i), PL_na) ; + value.size = PL_na ; + One = 1 ; + key.data = &One ; + key.size = sizeof(int) ; +#ifdef DB_VERSION_MAJOR + RETVAL = (db->cursor->c_put)(db->cursor, &key, &value, DB_BEFORE) ; +#else + RETVAL = (Db->put)(Db, &key, &value, R_IBEFORE) ; +#endif + if (RETVAL != 0) + break; + } + } + OUTPUT: + RETVAL + +I32 +pop(db) + DB_File db + ALIAS: POP = 1 + CODE: + { + DBTKEY key ; + DBT value ; + DB * Db = db->dbp ; + + DBT_flags(key) ; + DBT_flags(value) ; + CurrentDB = db ; + + /* First get the final value */ + RETVAL = do_SEQ(db, key, value, R_LAST) ; + ST(0) = sv_newmortal(); + /* Now delete it */ + if (RETVAL == 0) + { + /* the call to del will trash value, so take a copy now */ + OutputValue(ST(0), value) ; + RETVAL = db_del(db, key, R_CURSOR) ; + if (RETVAL != 0) + sv_setsv(ST(0), &PL_sv_undef); + } + } + +I32 +shift(db) + DB_File db + ALIAS: SHIFT = 1 + CODE: + { + DBT value ; + DBTKEY key ; + DB * Db = db->dbp ; + + DBT_flags(key) ; + DBT_flags(value) ; + CurrentDB = db ; + /* get the first value */ + RETVAL = do_SEQ(db, key, value, R_FIRST) ; + ST(0) = sv_newmortal(); + /* Now delete it */ + if (RETVAL == 0) + { + /* the call to del will trash value, so take a copy now */ + OutputValue(ST(0), value) ; + RETVAL = db_del(db, key, R_CURSOR) ; + if (RETVAL != 0) + sv_setsv (ST(0), &PL_sv_undef) ; + } + } + + +I32 +push(db, ...) + DB_File db + ALIAS: PUSH = 1 + CODE: + { + DBTKEY key ; + DBTKEY * keyptr = &key ; + DBT value ; + DB * Db = db->dbp ; + int i ; + + DBT_flags(key) ; + DBT_flags(value) ; + CurrentDB = db ; + /* Set the Cursor to the Last element */ + RETVAL = do_SEQ(db, key, value, R_LAST) ; + if (RETVAL >= 0) + { + if (RETVAL == 1) + keyptr = &empty ; +#ifdef DB_VERSION_MAJOR + for (i = 1 ; i < items ; ++i) + { + + ++ (* (int*)key.data) ; + value.data = SvPV(ST(i), PL_na) ; + value.size = PL_na ; + RETVAL = (Db->put)(Db, NULL, &key, &value, 0) ; + if (RETVAL != 0) + break; + } +#else + for (i = items - 1 ; i > 0 ; --i) + { + value.data = SvPV(ST(i), PL_na) ; + value.size = PL_na ; + RETVAL = (Db->put)(Db, keyptr, &value, R_IAFTER) ; + if (RETVAL != 0) + break; + } +#endif + } + } + OUTPUT: + RETVAL + + +I32 +length(db) + DB_File db + ALIAS: FETCHSIZE = 1 + CODE: + CurrentDB = db ; + RETVAL = GetArrayLength(db) ; + OUTPUT: + RETVAL + + +# +# Now provide an interface to the rest of the DB functionality +# + +int +db_del(db, key, flags=0) + DB_File db + DBTKEY key + u_int flags + CODE: + CurrentDB = db ; + RETVAL = db_del(db, key, flags) ; +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; + else if (RETVAL == DB_NOTFOUND) + RETVAL = 1 ; +#endif + OUTPUT: + RETVAL + + +int +db_get(db, key, value, flags=0) + DB_File db + DBTKEY key + DBT value = NO_INIT + u_int flags + CODE: + CurrentDB = db ; + DBT_flags(value) ; + RETVAL = db_get(db, key, value, flags) ; +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; + else if (RETVAL == DB_NOTFOUND) + RETVAL = 1 ; +#endif + OUTPUT: + RETVAL + value + +int +db_put(db, key, value, flags=0) + DB_File db + DBTKEY key + DBT value + u_int flags + CODE: + CurrentDB = db ; + RETVAL = db_put(db, key, value, flags) ; +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; + else if (RETVAL == DB_KEYEXIST) + RETVAL = 1 ; +#endif + OUTPUT: + RETVAL + key if (flags & (R_IAFTER|R_IBEFORE)) OutputKey(ST(1), key); + +int +db_fd(db) + DB_File db + int status = 0 ; + CODE: + CurrentDB = db ; +#ifdef DB_VERSION_MAJOR + RETVAL = -1 ; + status = (db->in_memory + ? -1 + : ((db->dbp)->fd)(db->dbp, &RETVAL) ) ; + if (status != 0) + RETVAL = -1 ; +#else + RETVAL = (db->in_memory + ? -1 + : ((db->dbp)->fd)(db->dbp) ) ; +#endif + OUTPUT: + RETVAL + +int +db_sync(db, flags=0) + DB_File db + u_int flags + CODE: + CurrentDB = db ; + RETVAL = db_sync(db, flags) ; +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; +#endif + OUTPUT: + RETVAL + + +int +db_seq(db, key, value, flags) + DB_File db + DBTKEY key + DBT value = NO_INIT + u_int flags + CODE: + CurrentDB = db ; + DBT_flags(value) ; + RETVAL = db_seq(db, key, value, flags); +#ifdef DB_VERSION_MAJOR + if (RETVAL > 0) + RETVAL = -1 ; + else if (RETVAL == DB_NOTFOUND) + RETVAL = 1 ; +#endif + OUTPUT: + RETVAL + key + value + |
