Added the PDO pseudo-engine

This commit is contained in:
Pierre Pronchery 2012-10-29 21:16:33 +01:00
parent 6e710609f7
commit 3b63c88c3f
4 changed files with 222 additions and 3 deletions

View File

@ -24,6 +24,7 @@ dist:
$(PACKAGE)-$(VERSION)/src/database.c \
$(PACKAGE)-$(VERSION)/src/Makefile \
$(PACKAGE)-$(VERSION)/src/project.conf \
$(PACKAGE)-$(VERSION)/src/database/pdo.c \
$(PACKAGE)-$(VERSION)/src/database/pgsql.c \
$(PACKAGE)-$(VERSION)/src/database/sqlite2.c \
$(PACKAGE)-$(VERSION)/src/database/sqlite3.c \

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@ -1,4 +1,4 @@
TARGETS = pgsql.so sqlite2.so sqlite3.so template.so
TARGETS = pdo.so pgsql.so sqlite2.so sqlite3.so template.so
PREFIX = /usr/local
DESTDIR =
LIBDIR = $(PREFIX)/lib
@ -18,6 +18,13 @@ INSTALL ?= install
all: $(TARGETS)
pdo_OBJS = pdo.o
pdo_CFLAGS = $(CPPFLAGSF) $(CPPFLAGS) $(CFLAGSF) $(CFLAGS)
pdo_LDFLAGS = $(LDFLAGSF) $(LDFLAGS)
pdo.so: $(pdo_OBJS)
$(CCSHARED) -o pdo.so $(pdo_OBJS) $(pdo_LDFLAGS)
pgsql_OBJS = pgsql.o
pgsql_CFLAGS = $(CPPFLAGSF) $(CPPFLAGS) -I `pg_config --includedir` $(CFLAGSF) $(CFLAGS)
pgsql_LDFLAGS = $(LDFLAGSF) $(LDFLAGS) -L `pg_config --libdir` -Wl,-rpath,`pg_config --libdir` `pg_config --libs` -lpq
@ -46,6 +53,9 @@ template_LDFLAGS = $(LDFLAGSF) $(LDFLAGS)
template.so: $(template_OBJS)
$(CCSHARED) -o template.so $(template_OBJS) $(template_LDFLAGS)
pdo.o: pdo.c database.h ../../config.h
$(CC) $(pdo_CFLAGS) -c pdo.c
pgsql.o: pgsql.c database.h
$(CC) $(pgsql_CFLAGS) -c pgsql.c
@ -59,12 +69,14 @@ template.o: template.c database.h
$(CC) $(template_CFLAGS) -c template.c
clean:
$(RM) -- $(pgsql_OBJS) $(sqlite2_OBJS) $(sqlite3_OBJS) $(template_OBJS)
$(RM) -- $(pdo_OBJS) $(pgsql_OBJS) $(sqlite2_OBJS) $(sqlite3_OBJS) $(template_OBJS)
distclean: clean
$(RM) -- $(TARGETS)
install: $(TARGETS)
$(MKDIR) $(DESTDIR)$(LIBDIR)/Database/engine
$(INSTALL) -m 0644 -- pdo.so $(DESTDIR)$(LIBDIR)/Database/engine/pdo.so
$(MKDIR) $(DESTDIR)$(LIBDIR)/Database/engine
$(INSTALL) -m 0644 -- pgsql.so $(DESTDIR)$(LIBDIR)/Database/engine/pgsql.so
$(MKDIR) $(DESTDIR)$(LIBDIR)/Database/engine
@ -73,6 +85,7 @@ install: $(TARGETS)
$(INSTALL) -m 0644 -- sqlite3.so $(DESTDIR)$(LIBDIR)/Database/engine/sqlite3.so
uninstall:
$(RM) -- $(DESTDIR)$(LIBDIR)/Database/engine/pdo.so
$(RM) -- $(DESTDIR)$(LIBDIR)/Database/engine/pgsql.so
$(RM) -- $(DESTDIR)$(LIBDIR)/Database/engine/sqlite2.so
$(RM) -- $(DESTDIR)$(LIBDIR)/Database/engine/sqlite3.so

197
src/database/pdo.c Normal file
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@ -0,0 +1,197 @@
/* $Id$ */
/* Copyright (c) 2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Database libDatabase */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdarg.h>
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <string.h>
#include <System.h>
#include "database.h"
#include "../../config.h"
#ifndef PREFIX
# define PREFIX "/usr/local"
#endif
#ifndef LIBDIR
# define LIBDIR PREFIX "/lib"
#endif
/* PDO */
/* private */
/* types */
typedef struct _DatabasePlugin
{
Plugin * plugin;
DatabasePluginDefinition * dplugin;
DatabasePlugin * database;
} PDO;
typedef struct _DatabaseStatement
{
DatabaseStatement * statement;
} PDOStatement;
/* protected */
/* prototypes */
/* plug-in */
static PDO * _pdo_init(Config * config, char const * section);
static void _pdo_destroy(PDO * pdo);
static int _pdo_get_last_id(PDO * pdo);
static int _pdo_query(PDO * pdo, char const * query, DatabaseCallback callback,
void * data);
static PDOStatement * _pdo_prepare_new(PDO * pdo, char const * query);
static void _pdo_prepare_delete(PDO * pdo, PDOStatement * statement);
static int _pdo_prepare_query(PDO * pdo, PDOStatement * statement,
DatabaseCallback callback, void * data, va_list args);
/* public */
/* variables */
DatabasePluginDefinition database =
{
"PDO",
NULL,
_pdo_init,
_pdo_destroy,
_pdo_get_last_id,
_pdo_query,
_pdo_prepare_new,
_pdo_prepare_delete,
_pdo_prepare_query
};
/* private */
/* functions */
/* _pdo_init */
static PDO * _pdo_init(Config * config, char const * section)
{
PDO * pdo;
char const * dsn;
char const sqlite3[] = "sqlite:";
char const * backend = NULL;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, section);
#endif
if((dsn = config_get(config, section, "dsn")) == NULL
|| (config = config_new()) == NULL)
return NULL;
/* FIXME implement more backends */
if(strncmp(dsn, sqlite3, sizeof(sqlite3) - 1) == 0)
{
backend = "sqlite3";
section = "database::sqlite3";
/* XXX may fail */
config_set(config, section, "filename",
&dsn[sizeof(sqlite3) - 1]);
}
else
/* XXX report error */
return NULL;
if((pdo = object_new(sizeof(*pdo))) == NULL)
{
config_delete(config);
return NULL;
}
pdo->database = NULL;
if((pdo->plugin = plugin_new(LIBDIR, PACKAGE, "database", backend))
== NULL
|| (pdo->dplugin = plugin_lookup(pdo->plugin,
"database")) == NULL
|| (pdo->database = pdo->dplugin->init(config, section))
== NULL)
{
config_delete(config);
_pdo_destroy(pdo);
return NULL;
}
config_delete(config);
return pdo;
}
/* _pdo_destroy */
static void _pdo_destroy(PDO * pdo)
{
if(pdo->database != NULL)
pdo->dplugin->destroy(pdo->database);
if(pdo->plugin != NULL)
plugin_delete(pdo->plugin);
object_delete(pdo);
}
/* accessors */
/* _pdo_get_last_id */
static int _pdo_get_last_id(PDO * pdo)
{
return pdo->dplugin->get_last_id(pdo->database);
}
/* useful */
/* _pdo_prepare_new */
static PDOStatement * _pdo_prepare_new(PDO * pdo, char const * query)
{
PDOStatement * statement;
if((statement = object_new(sizeof(*statement))) == NULL)
return NULL;
if((statement->statement = pdo->dplugin->prepare_new(pdo->database,
query)) == NULL)
{
object_delete(statement);
return NULL;
}
return statement;
}
/* _pdo_prepare_delete */
static void _pdo_prepare_delete(PDO * pdo, PDOStatement * statement)
{
pdo->dplugin->prepare_delete(pdo->database, statement->statement);
object_delete(statement);
}
/* _pdo_prepare_query */
static int _pdo_prepare_query(PDO * pdo, PDOStatement * statement,
DatabaseCallback callback, void * data, va_list args)
{
return pdo->dplugin->prepare_query(pdo->database, statement->statement,
callback, data, args);
}
/* _pdo_query */
static int _pdo_query(PDO * pdo, char const * query, DatabaseCallback callback,
void * data)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s(\"%s\")\n", __func__, query);
#endif
return pdo->dplugin->query(pdo->database, query, callback, data);
}

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@ -1,8 +1,16 @@
targets=pgsql,sqlite2,sqlite3,template
targets=pdo,pgsql,sqlite2,sqlite3,template
cflags_force=-W -fPIC
cflags=-Wall -g -O2 -pedantic
dist=Makefile,database.h
[pdo]
type=plugin
sources=pdo.c
install=$(LIBDIR)/Database/engine
[pdo.c]
depends=database.h,../../config.h
[pgsql]
type=plugin
cppflags=-I `pg_config --includedir`