First step towards the v0.5 API. New configfile routines in use.

Configfile adapted. For drivers: configfile routines are available.
2001-10-24 14:26:15 +00:00
parent 15325e8e3b
commit dc0f01850b
9 changed files with 1288 additions and 500 deletions
@@ -0,0 +1,184 @@
+/*
+ * Driver loader
+ *
+ * This code does all driver handling, loading, initializing, unloading.
+ *
+ */
+
+#include <malloc.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/errno.h>
+#include <syslog.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "shared/LL.h"
+#include "shared/debug.h"
+#include "configfile.h"
+
+#include "drivers/lcd.h"
+// lcd.h is used for the driver API definition
+
+
+LL * loaded_drivers = NULL;
+
+long int empty_function() { return 0; }
+
+static int fill_driver_functions( lcd_logical_driver * driver );
+
+static int store_private_ptr(struct lcd_logical_driver * driver, void * private_data);
+
+int
+load_driver ( char * name, char * filename, char * args )
+{
+	int res;
+	void (*driver_init)();
+	lcd_logical_driver * driver;
+
+	debug ("load_driver(%s,%s,%s)\n", name,filename,args);
+
+	// First driver ?
+	if( !loaded_drivers ) {
+		// Create linked list
+		loaded_drivers = LL_new ();
+		if( !loaded_drivers ) {
+			fprintf( stderr, "Error allocating driver list.\n" );
+			return -1;
+		}
+	}
+
+
+	// Find the driver in the array of driver types
+	if ((driver_init = (void *) lcd_find_init(name)) == NULL) {
+		// Driver not found
+		fprintf( stderr, "invalid driver: %s\n", name);
+		return -1;
+	}
+
+
+	// Allocate memory for new driver struct
+	driver = malloc( sizeof( lcd_logical_driver ));
+	//memset( driver, 0, sizeof (lcd_logical_driver ));
+
+	lcd_ptr = driver;
+
+	fill_driver_functions( driver );
+
+
+	// Rebind the init function and call it
+	driver->init = driver_init;
+
+	res = driver->init( driver, args );
+	if( res < 0 ) {
+		fprintf( stderr, "res<0\n" );
+		// driver load failed, don't add driver to list
+		return -1;
+	}
+
+	// Add driver to list
+	LL_Push( loaded_drivers, driver );
+
+	// Check the driver type
+	if( driver->daemonize ) {
+		return 2;
+	}
+
+	return 1; // We can't see if it's an input driver only...
+}
+
+
+int
+unload_all_drivers ()
+{
+	lcd_logical_driver * driver;
+
+	debug ("unload_all_driver()\n");
+
+	while( (driver = LL_Pop( loaded_drivers )) != NULL ) {
+		debug ("driver->close %p\n", driver );
+		driver->close();
+	}
+
+	return 0;
+}
+
+
+static int
+fill_driver_functions( lcd_logical_driver * driver )
+{
+	driver->wid = LCD_STD_WIDTH;
+	driver->hgt = LCD_STD_HEIGHT;
+
+	driver->cellwid = LCD_STD_CELL_WIDTH;
+	driver->cellhgt = LCD_STD_CELL_HEIGHT;
+
+	driver->framebuf = NULL;
+	driver->nextkey = NULL;
+
+	driver->daemonize = 1;
+
+	// Set pointers to empty function
+
+	// Basic functions
+	driver->init = empty_function;
+	driver->close = empty_function;
+
+	driver->getinfo = empty_function;
+	// and don't forget other get_* functions later...
+
+	driver->clear = empty_function;
+	driver->flush = empty_function;
+	driver->string = empty_function;
+	driver->chr = empty_function;
+
+	// Extended functions
+	driver->init_vbar = empty_function;
+	driver->vbar = empty_function;
+	driver->init_hbar = empty_function;
+	driver->hbar = empty_function;
+	driver->init_num = empty_function;
+	driver->num = empty_function;
+	driver->heartbeat = empty_function;
+
+	// Hardware functions
+	driver->contrast = empty_function;
+	driver->backlight = empty_function;
+	driver->output = empty_function;
+
+	// Uesrdef character functions
+	driver->set_char = empty_function;
+	driver->icon = empty_function;
+
+	// Key functions
+	driver->getkey = empty_function;
+
+	// Ancient functions
+	driver->flush_box = empty_function;
+	driver->draw_frame = empty_function;
+
+	// Config file functions
+	driver->config_get_bool		= config_get_bool;
+	driver->config_get_int		= config_get_int;
+	driver->config_get_float	= config_get_float;
+	driver->config_get_string	= config_get_string;
+	driver->config_has_section	= config_has_section;
+	driver->config_has_key		= config_has_key;
+
+	// Driver private data
+	driver->store_private_ptr	= store_private_ptr;
+
+	return 0;
+}
+
+
+static int
+store_private_ptr(struct lcd_logical_driver * driver, void * private_data)
+{
+	driver->private_data = private_data;
+	return 0;
+}