PApp-SQL/SQL.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#if (PERL_VERSION < 5) || ((PERL_VERSION == 5) && (PERL_SUBVERSION <= 6))
# define get_sv      perl_get_sv
# define call_method perl_call_method
# define call_sv     perl_call_sv
#endif

#if (PERL_VERSION < 5) || ((PERL_VERSION == 5) && (PERL_SUBVERSION <= 5))
# define CAN_UTF8 1
#endif

static SV *
sql_upgrade_utf8 (SV *sv)
{
#if CAN_UTF8
  if (SvPOK (sv))
    sv_utf8_upgrade (sv);
#endif
  return sv;
}

static SV *
sql_force_utf8 (SV *sv)
{
#if CAN_UTF8
  if (SvPOK (sv))
    SvUTF8_on (sv);
#endif
  return sv;
}

#define maybe_upgrade_utf8(utf8,sv) ((utf8) ? sql_upgrade_utf8 (sv) : (sv))
#define maybe_force_utf8(utf8,sv)   ((utf8) ? sql_force_utf8   (sv) : (sv))

#define is_dbh(sv) ((sv) && sv_isobject (sv) && sv_derived_from ((sv), "DBI::db"))

typedef struct lru_node {
  struct lru_node *next;
  struct lru_node *prev;
  U32 hash;
  SV *dbh;
  SV *sql;

  SV *sth;
#if 0 /* method cache */
  GV *execute;
  GV *bind_columns;
  GV *fetch;
  GV *finish;
#endif
} lru_node;

static lru_node lru_list;
static int lru_size;
static int lru_maxsize;

#define lru_init lru_list.next = &lru_list; lru_list.prev = &lru_list /* other fields are zero */

/* this is primitive, yet effective */
/* the returned value must never be zero (or bad things will happen) */
#define lru_hash do {   \
        hash = (((U32)dbh)>>2); \
        hash += *statement;\
        hash += len;            \
} while (0)

/* fetch and "use" */
/* could be done using a single call (we could call prepare!) */
static SV *lru_fetch(SV *dbh, SV *sql)
{
  lru_node *n;

  U32 hash;
  STRLEN len;
  char *statement = SvPV (sql, len);

  dbh = SvRV (dbh);

  lru_hash;

  /*fprintf (stderr, "F: %08lx %s\n", hash, SvPV_nolen (sql));/*D*/

  n = &lru_list;
  do {
    n = n->next;
    if (!n->hash)
      return 0;
  } while (n->hash != hash
           || !sv_eq (n->sql, sql)
           || n->dbh != dbh);

  /* found, so return to the start of the list */
  n->prev->next = n->next;
  n->next->prev = n->prev;

  n->next = lru_list.next;
  n->prev = &lru_list;
  lru_list.next->prev = n;
  lru_list.next = n;

  return n->sth;
}

static void lru_nukeone(void)
{
  lru_node *n;
  /* nuke at the end */

  n = lru_list.prev;

  lru_list.prev = n->prev;
  n->prev->next = &lru_list;

  /*fprintf (stderr, "N: %s\n", SvPV_nolen (n->sql));/*D*/

  SvREFCNT_dec (n->dbh);
  SvREFCNT_dec (n->sql);
  SvREFCNT_dec (n->sth);
  Safefree (n);
  
  lru_size--;
}

/* store a not-yet existing entry(!) */
static void lru_store(SV *dbh, SV *sql, SV *sth)
{
  lru_node *n;

  U32 hash;
  STRLEN len;
  char *statement = SvPV (sql, len);

  dbh = SvRV (dbh);

  lru_hash;

  /*fprintf (stderr, "S: %08lx %s\n", hash, SvPV_nolen (sql));/*D*/

  lru_size++;
  if (lru_size > lru_maxsize)
    lru_nukeone ();

  New (0, n, 1, lru_node);

  n->hash = hash;
  n->dbh = dbh; SvREFCNT_inc (dbh); /* note: this is the dbi hash itself, not the reference */
  n->sql = newSVsv (sql);
  n->sth = sth; SvREFCNT_inc (sth);

  n->next = lru_list.next;
  n->prev = &lru_list;
  lru_list.next->prev = n;
  lru_list.next = n;
}

static void lru_cachesize (int size)
{
  if (size >= 0)
    {
      lru_maxsize = size;
      while (lru_size > lru_maxsize)
        lru_nukeone ();
    }
}

static GV *sql_exec;
static GV *DBH;
static SV *sv_prepare, *sv_execute, *sv_bind_columns,
          *sv_fetchrow_arrayref, *sv_fetchall_arrayref,
          *sv_finish;

#define newconstpv(str) newSVpvn ((str), sizeof (str))

MODULE = PApp::SQL              PACKAGE = PApp::SQL

PROTOTYPES: DISABLE

BOOT:
{
   sql_exec = gv_fetchpv ("PApp::SQL::sql_exec", TRUE, SVt_PV);
   DBH      = gv_fetchpv ("PApp::SQL::DBH"     , TRUE, SVt_PV);

   if (!sv_prepare)
     {
       sv_prepare           = newconstpv ("prepare");
       sv_execute           = newconstpv ("execute");
       sv_bind_columns      = newconstpv ("bind_columns");
       sv_fetchrow_arrayref = newconstpv ("fetchrow_arrayref");
       sv_fetchall_arrayref = newconstpv ("fetchall_arrayref");
       sv_finish            = newconstpv ("finish");
     }

   /* apache might BOOT: twice :( */
   if (lru_size)
     lru_cachesize (0);

   lru_init;
   lru_cachesize (50);
}

int
cachesize(size = -1)
        int     size
        CODE:
        RETVAL = lru_maxsize;
        lru_cachesize (size);
        OUTPUT:
        RETVAL

void
sql_exec(...)
        ALIAS:
                sql_uexec     = 1
                sql_fetch     = 2
                sql_ufetch    = 3
                sql_fetchall  = 4
                sql_ufetchall = 5
                sql_exists    = 6
                sql_uexists   = 7
        PPCODE:
{
        if (items == 0)
          croak ("Usage: sql_exec [database-handle,] [bind-var-refs,... ] \"sql-statement\", [arguments, ...]");
        else
          {
            int arg = 0;
            int bind_first, bind_last;
            int count;
            SV *dbh = ST(0);
            SV *sth;
            SV *sql;
            SV *execute;
            STRLEN dc;

            /* save our arguments against destruction through function calls */
            SP += items;
            
            /* first check wether we should use an explicit db handle */
            if (!is_dbh (dbh))
              {
                dbh = get_sv ("DBH", FALSE);
                if (!is_dbh (dbh))
                  {
                    dbh = GvSV(DBH);
                    if (!is_dbh (dbh))
                      croak ("sql_exec: no $DBH found in current package or in PApp::SQL::");
                  }
              }
            else
              arg++; /* we consumed one argument */

            /* count the remaining references (for bind_columns) */
            bind_first = arg;
            while (items > arg && SvROK (ST(arg)))
              arg++;

            bind_last = arg;

            /* consume the sql-statement itself */
            if (items <= arg)
              croak ("sql_exec: required argument \"sql-statement\" missing");

            if (!SvPOK (ST(arg)))
              croak ("sql_exec: sql-statement must be a string");

            sql = ST(arg); arg++;

            if ((ix & ~1) == 6)
              {
                SV *neu = sv_2mortal (newSVpv ("select count(*) > 0 from ", 0));
                sv_catsv (neu, sql);
                sv_catpv (neu, " limit 1");
                sql = neu;
                ix -= 4; /* sql_fetch */
              }

            /* check cache for existing statement handle */
            sth = lru_fetch (dbh, sql);
            if (!sth)
              {
                PUSHMARK (SP);
                EXTEND (SP, 2);
                PUSHs (dbh);
                PUSHs (sql);
                PUTBACK;
                count = call_sv (sv_prepare, G_METHOD | G_SCALAR);
                SPAGAIN;

                if (count != 1)
                  croak ("sql_exec: unable to prepare() statement '%s': %s",
                         SvPV (sql, dc),
                         SvPV (get_sv ("DBI::errstr", TRUE), dc));

                sth = POPs;

                lru_store (dbh, sql, sth);
              }

            PUSHMARK (SP);
            EXTEND (SP, items - arg + 1);
            PUSHs (sth);
            while (items > arg)
              {
                PUSHs (maybe_upgrade_utf8 (ix & 1, ST(arg)));
                arg++;
              }

            PUTBACK;
            /* { static GV *execute;
              if (!execute) execute = gv_fetchmethod_autoload(SvSTASH(SvRV(sth)), "execute", 0);
              count = call_sv(GvCV(execute), G_SCALAR);
             }*/
            count = call_sv (sv_execute, G_METHOD | G_SCALAR);
            SPAGAIN;

            if (count != 1)
              croak ("sql_exec: execute() didn't return any value ('%s'): %s",
                     SvPV (sql, dc),
                     SvPV (get_sv ("DBI::errstr", TRUE), dc));

            execute = POPs;

            if (!SvTRUE (execute))
              croak ("sql_exec: unable to execute statement '%s' (%s)",
                     SvPV (sql, dc),
                     SvPV (get_sv ("DBI::errstr", TRUE), dc));

            sv_setsv (GvSV(sql_exec), execute);

            if (bind_first != bind_last)
              {
                PUSHMARK (SP);
                EXTEND (SP, bind_last - bind_first + 2);
                PUSHs (sth);
                do {
                  PUSHs (ST(bind_first));
                  bind_first++;
                } while (bind_first != bind_last);

                PUTBACK;
                count = call_sv (sv_bind_columns, G_METHOD | G_SCALAR);
                SPAGAIN;

                if (count != 1)
                  croak ("sql_exec: bind_columns() didn't return any value ('%s'): %s",
                         SvPV (sql, dc),
                         SvPV (get_sv ("DBI::errstr", TRUE), dc));

                if (!SvOK (POPs))
                  croak ("sql_exec: bind_columns() didn't return a true ('%s'): %s",
                         SvPV (sql, dc),
                         SvPV (get_sv ("DBI::errstr", TRUE), dc));
              }

            /* free our arguments from the stack */
            SP -= items;

            if ((ix & ~1) == 2)
              { /* sql_fetch */
                SV *row;

                PUSHMARK (SP);
                XPUSHs (sth);
                PUTBACK;
                count = call_sv (sv_fetchrow_arrayref, G_METHOD | G_SCALAR);
                SPAGAIN;

                if (count != 1)
                  abort ();

                row = POPs;

                if (SvROK (row))
                  {
                    AV *av;

                    switch (GIMME_V)
                      {
                        case G_VOID:
                          /* no thing */
                          break;
                        case G_SCALAR:
                          /* the first element */
                          XPUSHs (maybe_force_utf8 (ix & 1, *av_fetch ((AV *)SvRV (row), 0, 1)));
                          break;
                        case G_ARRAY:
                          av = (AV *)SvRV (row);
                          count = AvFILL (av) + 1;
                          EXTEND (SP, count);
                          for (arg = 0; arg < count; arg++)
                            PUSHs (maybe_force_utf8 (ix & 1, AvARRAY (av)[arg]));

                          break;
                        default:
                          abort ();
                      }
                 }
              }
            else if ((ix & ~1) == 4)
              { /* sql_fetchall */
                SV *rows;

                PUSHMARK (SP);
                XPUSHs (sth);
                PUTBACK;
                count = call_sv (sv_fetchall_arrayref, G_METHOD | G_SCALAR);
                SPAGAIN;

                if (count != 1)
                  abort ();

                rows = POPs;

                if (SvROK (rows))
                  {
                    AV *av = (AV *)SvRV (rows);
                    count = AvFILL (av) + 1;

                    if (count)
                      {
                        int columns = AvFILL ((AV *) SvRV (AvARRAY (av)[0])) + 1; /* columns? */

                        EXTEND (SP, count);
                        if (columns == 1)
                          for (arg = 0; arg < count; arg++)
                            PUSHs (maybe_force_utf8 (ix & 1, AvARRAY ((AV *)SvRV (AvARRAY (av)[arg]))[0]));
                        else
                          for (arg = 0; arg < count; arg++)
                            PUSHs (maybe_force_utf8 (ix & 1, AvARRAY (av)[arg]));
                      }
                 }
              }
            else
              XPUSHs (sth);

            if (ix > 1 || GIMME_V == G_VOID)
              {
                PUSHMARK (SP);
                XPUSHs (sth);
                PUTBACK;
                (void) call_sv (sv_finish, G_METHOD | G_DISCARD);
                SPAGAIN;
              }
          }
}


Revision:	1.7
Committed:	Mon Apr 23 04:25:08 2001 UTC (25 years, 4 months ago) by root
Branch:	MAIN
CVS Tags:	papp_last_stable, pre_big_pcode_semantic_change, DEVEL9916
Changes since 1.6:	+1 -1 lines
Log Message:	* empty log message *
#	Content
1	#include "EXTERN.h"
2	#include "perl.h"
3	#include "XSUB.h"
4
5	#if (PERL_VERSION < 5) \|\| ((PERL_VERSION == 5) && (PERL_SUBVERSION <= 6))
6	# define get_sv perl_get_sv
7	# define call_method perl_call_method
8	# define call_sv perl_call_sv
9	#endif
10
11	#if (PERL_VERSION < 5) \|\| ((PERL_VERSION == 5) && (PERL_SUBVERSION <= 5))
12	# define CAN_UTF8 1
13	#endif
14
15	static SV *
16	sql_upgrade_utf8 (SV *sv)
17	{
18	#if CAN_UTF8
19	if (SvPOK (sv))
20	sv_utf8_upgrade (sv);
21	#endif
22	return sv;
23	}
24
25	static SV *
26	sql_force_utf8 (SV *sv)
27	{
28	#if CAN_UTF8
29	if (SvPOK (sv))
30	SvUTF8_on (sv);
31	#endif
32	return sv;
33	}
34
35	#define maybe_upgrade_utf8(utf8,sv) ((utf8) ? sql_upgrade_utf8 (sv) : (sv))
36	#define maybe_force_utf8(utf8,sv) ((utf8) ? sql_force_utf8 (sv) : (sv))
37
38	#define is_dbh(sv) ((sv) && sv_isobject (sv) && sv_derived_from ((sv), "DBI::db"))
39
40	typedef struct lru_node {
41	struct lru_node *next;
42	struct lru_node *prev;
43	U32 hash;
44	SV *dbh;
45	SV *sql;
46
47	SV *sth;
48	#if 0 /* method cache */
49	GV *execute;
50	GV *bind_columns;
51	GV *fetch;
52	GV *finish;
53	#endif
54	} lru_node;
55
56	static lru_node lru_list;
57	static int lru_size;
58	static int lru_maxsize;
59
60	#define lru_init lru_list.next = &lru_list; lru_list.prev = &lru_list /* other fields are zero */
61
62	/* this is primitive, yet effective */
63	/* the returned value must never be zero (or bad things will happen) */
64	#define lru_hash do { \
65	hash = (((U32)dbh)>>2); \
66	hash += *statement;\
67	hash += len; \
68	} while (0)
69
70	/* fetch and "use" */
71	/* could be done using a single call (we could call prepare!) */
72	static SV lru_fetch(SV dbh, SV *sql)
73	{
74	lru_node *n;
75
76	U32 hash;
77	STRLEN len;
78	char *statement = SvPV (sql, len);
79
80	dbh = SvRV (dbh);
81
82	lru_hash;
83
84	/fprintf (stderr, "F: %08lx %s\n", hash, SvPV_nolen (sql));/D*/
85
86	n = &lru_list;
87	do {
88	n = n->next;
89	if (!n->hash)
90	return 0;
91	} while (n->hash != hash
92	\|\| !sv_eq (n->sql, sql)
93	\|\| n->dbh != dbh);
94
95	/* found, so return to the start of the list */
96	n->prev->next = n->next;
97	n->next->prev = n->prev;
98
99	n->next = lru_list.next;
100	n->prev = &lru_list;
101	lru_list.next->prev = n;
102	lru_list.next = n;
103
104	return n->sth;
105	}
106
107	static void lru_nukeone(void)
108	{
109	lru_node *n;
110	/* nuke at the end */
111
112	n = lru_list.prev;
113
114	lru_list.prev = n->prev;
115	n->prev->next = &lru_list;
116
117	/fprintf (stderr, "N: %s\n", SvPV_nolen (n->sql));/D*/
118
119	SvREFCNT_dec (n->dbh);
120	SvREFCNT_dec (n->sql);
121	SvREFCNT_dec (n->sth);
122	Safefree (n);
123
124	lru_size--;
125	}
126
127	/* store a not-yet existing entry(!) */
128	static void lru_store(SV dbh, SV sql, SV *sth)
129	{
130	lru_node *n;
131
132	U32 hash;
133	STRLEN len;
134	char *statement = SvPV (sql, len);
135
136	dbh = SvRV (dbh);
137
138	lru_hash;
139
140	/fprintf (stderr, "S: %08lx %s\n", hash, SvPV_nolen (sql));/D*/
141
142	lru_size++;
143	if (lru_size > lru_maxsize)
144	lru_nukeone ();
145
146	New (0, n, 1, lru_node);
147
148	n->hash = hash;
149	n->dbh = dbh; SvREFCNT_inc (dbh); /* note: this is the dbi hash itself, not the reference */
150	n->sql = newSVsv (sql);
151	n->sth = sth; SvREFCNT_inc (sth);
152
153	n->next = lru_list.next;
154	n->prev = &lru_list;
155	lru_list.next->prev = n;
156	lru_list.next = n;
157	}
158
159	static void lru_cachesize (int size)
160	{
161	if (size >= 0)
162	{
163	lru_maxsize = size;
164	while (lru_size > lru_maxsize)
165	lru_nukeone ();
166	}
167	}
168
169	static GV *sql_exec;
170	static GV *DBH;
171	static SV sv_prepare, sv_execute, *sv_bind_columns,
172	sv_fetchrow_arrayref, sv_fetchall_arrayref,
173	*sv_finish;
174
175	#define newconstpv(str) newSVpvn ((str), sizeof (str))
176
177	MODULE = PApp::SQL PACKAGE = PApp::SQL
178
179	PROTOTYPES: DISABLE
180
181	BOOT:
182	{
183	sql_exec = gv_fetchpv ("PApp::SQL::sql_exec", TRUE, SVt_PV);
184	DBH = gv_fetchpv ("PApp::SQL::DBH" , TRUE, SVt_PV);
185
186	if (!sv_prepare)
187	{
188	sv_prepare = newconstpv ("prepare");
189	sv_execute = newconstpv ("execute");
190	sv_bind_columns = newconstpv ("bind_columns");
191	sv_fetchrow_arrayref = newconstpv ("fetchrow_arrayref");
192	sv_fetchall_arrayref = newconstpv ("fetchall_arrayref");
193	sv_finish = newconstpv ("finish");
194	}
195
196	/* apache might BOOT: twice :( */
197	if (lru_size)
198	lru_cachesize (0);
199
200	lru_init;
201	lru_cachesize (50);
202	}
203
204	int
205	cachesize(size = -1)
206	int size
207	CODE:
208	RETVAL = lru_maxsize;
209	lru_cachesize (size);
210	OUTPUT:
211	RETVAL
212
213	void
214	sql_exec(...)
215	ALIAS:
216	sql_uexec = 1
217	sql_fetch = 2
218	sql_ufetch = 3
219	sql_fetchall = 4
220	sql_ufetchall = 5
221	sql_exists = 6
222	sql_uexists = 7
223	PPCODE:
224	{
225	if (items == 0)
226	croak ("Usage: sql_exec [database-handle,] [bind-var-refs,... ] \"sql-statement\", [arguments, ...]");
227	else
228	{
229	int arg = 0;
230	int bind_first, bind_last;
231	int count;
232	SV *dbh = ST(0);
233	SV *sth;
234	SV *sql;
235	SV *execute;
236	STRLEN dc;
237
238	/* save our arguments against destruction through function calls */
239	SP += items;
240
241	/* first check wether we should use an explicit db handle */
242	if (!is_dbh (dbh))
243	{
244	dbh = get_sv ("DBH", FALSE);
245	if (!is_dbh (dbh))
246	{
247	dbh = GvSV(DBH);
248	if (!is_dbh (dbh))
249	croak ("sql_exec: no $DBH found in current package or in PApp::SQL::");
250	}
251	}
252	else
253	arg++; /* we consumed one argument */
254
255	/* count the remaining references (for bind_columns) */
256	bind_first = arg;
257	while (items > arg && SvROK (ST(arg)))
258	arg++;
259
260	bind_last = arg;
261
262	/* consume the sql-statement itself */
263	if (items <= arg)
264	croak ("sql_exec: required argument \"sql-statement\" missing");
265
266	if (!SvPOK (ST(arg)))
267	croak ("sql_exec: sql-statement must be a string");
268
269	sql = ST(arg); arg++;
270
271	if ((ix & ~1) == 6)
272	{
273	SV neu = sv_2mortal (newSVpv ("select count() > 0 from ", 0));
274	sv_catsv (neu, sql);
275	sv_catpv (neu, " limit 1");
276	sql = neu;
277	ix -= 4; /* sql_fetch */
278	}
279
280	/* check cache for existing statement handle */
281	sth = lru_fetch (dbh, sql);
282	if (!sth)
283	{
284	PUSHMARK (SP);
285	EXTEND (SP, 2);
286	PUSHs (dbh);
287	PUSHs (sql);
288	PUTBACK;
289	count = call_sv (sv_prepare, G_METHOD \| G_SCALAR);
290	SPAGAIN;
291
292	if (count != 1)
293	croak ("sql_exec: unable to prepare() statement '%s': %s",
294	SvPV (sql, dc),
295	SvPV (get_sv ("DBI::errstr", TRUE), dc));
296
297	sth = POPs;
298
299	lru_store (dbh, sql, sth);
300	}
301
302	PUSHMARK (SP);
303	EXTEND (SP, items - arg + 1);
304	PUSHs (sth);
305	while (items > arg)
306	{
307	PUSHs (maybe_upgrade_utf8 (ix & 1, ST(arg)));
308	arg++;
309	}
310
311	PUTBACK;
312	/* { static GV *execute;
313	if (!execute) execute = gv_fetchmethod_autoload(SvSTASH(SvRV(sth)), "execute", 0);
314	count = call_sv(GvCV(execute), G_SCALAR);
315	}*/
316	count = call_sv (sv_execute, G_METHOD \| G_SCALAR);
317	SPAGAIN;
318
319	if (count != 1)
320	croak ("sql_exec: execute() didn't return any value ('%s'): %s",
321	SvPV (sql, dc),
322	SvPV (get_sv ("DBI::errstr", TRUE), dc));
323
324	execute = POPs;
325
326	if (!SvTRUE (execute))
327	croak ("sql_exec: unable to execute statement '%s' (%s)",
328	SvPV (sql, dc),
329	SvPV (get_sv ("DBI::errstr", TRUE), dc));
330
331	sv_setsv (GvSV(sql_exec), execute);
332
333	if (bind_first != bind_last)
334	{
335	PUSHMARK (SP);
336	EXTEND (SP, bind_last - bind_first + 2);
337	PUSHs (sth);
338	do {
339	PUSHs (ST(bind_first));
340	bind_first++;
341	} while (bind_first != bind_last);
342
343	PUTBACK;
344	count = call_sv (sv_bind_columns, G_METHOD \| G_SCALAR);
345	SPAGAIN;
346
347	if (count != 1)
348	croak ("sql_exec: bind_columns() didn't return any value ('%s'): %s",
349	SvPV (sql, dc),
350	SvPV (get_sv ("DBI::errstr", TRUE), dc));
351
352	if (!SvOK (POPs))
353	croak ("sql_exec: bind_columns() didn't return a true ('%s'): %s",
354	SvPV (sql, dc),
355	SvPV (get_sv ("DBI::errstr", TRUE), dc));
356	}
357
358	/* free our arguments from the stack */
359	SP -= items;
360
361	if ((ix & ~1) == 2)
362	{ /* sql_fetch */
363	SV *row;
364
365	PUSHMARK (SP);
366	XPUSHs (sth);
367	PUTBACK;
368	count = call_sv (sv_fetchrow_arrayref, G_METHOD \| G_SCALAR);
369	SPAGAIN;
370
371	if (count != 1)
372	abort ();
373
374	row = POPs;
375
376	if (SvROK (row))
377	{
378	AV *av;
379
380	switch (GIMME_V)
381	{
382	case G_VOID:
383	/* no thing */
384	break;
385	case G_SCALAR:
386	/* the first element */
387	XPUSHs (maybe_force_utf8 (ix & 1, av_fetch ((AV )SvRV (row), 0, 1)));
388	break;
389	case G_ARRAY:
390	av = (AV *)SvRV (row);
391	count = AvFILL (av) + 1;
392	EXTEND (SP, count);
393	for (arg = 0; arg < count; arg++)
394	PUSHs (maybe_force_utf8 (ix & 1, AvARRAY (av)[arg]));
395
396	break;
397	default:
398	abort ();
399	}
400	}
401	}
402	else if ((ix & ~1) == 4)
403	{ /* sql_fetchall */
404	SV *rows;
405
406	PUSHMARK (SP);
407	XPUSHs (sth);
408	PUTBACK;
409	count = call_sv (sv_fetchall_arrayref, G_METHOD \| G_SCALAR);
410	SPAGAIN;
411
412	if (count != 1)
413	abort ();
414
415	rows = POPs;
416
417	if (SvROK (rows))
418	{
419	AV av = (AV )SvRV (rows);
420	count = AvFILL (av) + 1;
421
422	if (count)
423	{
424	int columns = AvFILL ((AV ) SvRV (AvARRAY (av)[0])) + 1; / columns? */
425
426	EXTEND (SP, count);
427	if (columns == 1)
428	for (arg = 0; arg < count; arg++)
429	PUSHs (maybe_force_utf8 (ix & 1, AvARRAY ((AV *)SvRV (AvARRAY (av)[arg]))[0]));
430	else
431	for (arg = 0; arg < count; arg++)
432	PUSHs (maybe_force_utf8 (ix & 1, AvARRAY (av)[arg]));
433	}
434	}
435	}
436	else
437	XPUSHs (sth);
438
439	if (ix > 1 \|\| GIMME_V == G_VOID)
440	{
441	PUSHMARK (SP);
442	XPUSHs (sth);
443	PUTBACK;
444	(void) call_sv (sv_finish, G_METHOD \| G_DISCARD);
445	SPAGAIN;
446	}
447	}
448	}
449
450
451