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@ r9859:8c15dba58099
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Location: cpp/openttd-patchpack/source/src/driver.cpp
r9859:8c15dba58099
5.4 KiB
text/x-c
(svn r14004) -Codechange: Clean of drop down lists.
Move empty item drawing to base ListItem Draw() function.
Remove String() from base class.
Pass correct width to Draw().
Move empty item drawing to base ListItem Draw() function.
Remove String() from base class.
Pass correct width to Draw().
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/** @file driver.cpp Base for all driver handling. */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "driver.h"
#include "sound/sound_driver.hpp"
#include "music/music_driver.hpp"
#include "video/video_driver.hpp"
VideoDriver *_video_driver;
char _ini_videodriver[32];
int _num_resolutions;
Dimension _resolutions[32];
Dimension _cur_resolution;
SoundDriver *_sound_driver;
char _ini_sounddriver[32];
MusicDriver *_music_driver;
char _ini_musicdriver[32];
char _ini_blitter[32];
static const char* GetDriverParam(const char* const* parm, const char* name)
{
size_t len;
if (parm == NULL) return NULL;
len = strlen(name);
for (; *parm != NULL; parm++) {
const char* p = *parm;
if (strncmp(p, name, len) == 0) {
if (p[len] == '=') return p + len + 1;
if (p[len] == '\0') return p + len;
}
}
return NULL;
}
bool GetDriverParamBool(const char* const* parm, const char* name)
{
return GetDriverParam(parm, name) != NULL;
}
int GetDriverParamInt(const char* const* parm, const char* name, int def)
{
const char* p = GetDriverParam(parm, name);
return p != NULL ? atoi(p) : def;
}
/**
* Find the requested driver and return its class.
* @param name the driver to select.
* @post Sets the driver so GetCurrentDriver() returns it too.
*/
const Driver *DriverFactoryBase::SelectDriver(const char *name, Driver::Type type)
{
if (GetDrivers().size() == 0) return NULL;
if (*name == '\0') {
/* Probe for this driver */
for (int priority = 10; priority >= 0; priority--) {
Drivers::iterator it = GetDrivers().begin();
for (; it != GetDrivers().end(); ++it) {
DriverFactoryBase *d = (*it).second;
/* Check driver type */
if (d->type != type) continue;
if (d->priority != priority) continue;
Driver *newd = d->CreateInstance();
const char *err = newd->Start(NULL);
if (err == NULL) {
DEBUG(driver, 1, "Successfully probed %s driver '%s'", GetDriverTypeName(type), d->name);
delete *GetActiveDriver(type);
*GetActiveDriver(type) = newd;
return newd;
}
DEBUG(driver, 1, "Probing %s driver '%s' failed with error: %s", GetDriverTypeName(type), d->name, err);
delete newd;
}
}
usererror("Couldn't find any suitable %s driver", GetDriverTypeName(type));
} else {
char *parm;
char buffer[256];
const char *parms[32];
/* Extract the driver name and put parameter list in parm */
strecpy(buffer, name, lastof(buffer));
parm = strchr(buffer, ':');
parms[0] = NULL;
if (parm != NULL) {
uint np = 0;
/* Tokenize the parm. */
do {
*parm++ = '\0';
if (np < lengthof(parms) - 1) parms[np++] = parm;
while (*parm != '\0' && *parm != ',') parm++;
} while (*parm == ',');
parms[np] = NULL;
}
/* Find this driver */
Drivers::iterator it = GetDrivers().begin();
for (; it != GetDrivers().end(); ++it) {
DriverFactoryBase *d = (*it).second;
/* Check driver type */
if (d->type != type) continue;
/* Check driver name */
if (strcasecmp(buffer, d->name) != 0) continue;
/* Found our driver, let's try it */
Driver *newd = d->CreateInstance();
const char *err = newd->Start(parms);
if (err != NULL) {
delete newd;
usererror("Unable to load driver '%s'. The error was: %s", d->name, err);
}
DEBUG(driver, 1, "Successfully loaded %s driver '%s'", GetDriverTypeName(type), d->name);
delete *GetActiveDriver(type);
*GetActiveDriver(type) = newd;
return newd;
}
usererror("No such %s driver: %s\n", GetDriverTypeName(type), buffer);
}
}
/**
* Register a driver internally, based on its name.
* @param name the name of the driver.
* @note an assert() will be trigger if 2 driver with the same name try to register.
*/
void DriverFactoryBase::RegisterDriver(const char *name, Driver::Type type, int priority)
{
/* Don't register nameless Drivers */
if (name == NULL) return;
this->name = strdup(name);
this->type = type;
this->priority = priority;
/* Prefix the name with driver type to make it unique */
char buf[32];
strecpy(buf, GetDriverTypeName(type), lastof(buf));
strecpy(buf + 5, name, lastof(buf));
const char *longname = strdup(buf);
std::pair<Drivers::iterator, bool> P = GetDrivers().insert(Drivers::value_type(longname, this));
assert(P.second);
}
/**
* Build a human readable list of available drivers, grouped by type.
*/
char *DriverFactoryBase::GetDriversInfo(char *p, const char *last)
{
for (Driver::Type type = Driver::DT_BEGIN; type != Driver::DT_END; type++) {
p += snprintf(p, last - p, "List of %s drivers:\n", GetDriverTypeName(type));
for (int priority = 10; priority >= 0; priority--) {
Drivers::iterator it = GetDrivers().begin();
for (; it != GetDrivers().end(); it++) {
DriverFactoryBase *d = (*it).second;
if (d->type != type) continue;
if (d->priority != priority) continue;
p += snprintf(p, last - p, "%18s: %s\n", d->name, d->GetDescription());
}
}
p += snprintf(p, last - p, "\n");
}
return p;
}
/** Frees memory used for this->name
*/
DriverFactoryBase::~DriverFactoryBase() {
if (this->name == NULL) return;
/* Prefix the name with driver type to make it unique */
char buf[32];
strecpy(buf, GetDriverTypeName(type), lastof(buf));
strecpy(buf + 5, this->name, lastof(buf));
Drivers::iterator it = GetDrivers().find(buf);
assert(it != GetDrivers().end());
const char *longname = (*it).first;
GetDrivers().erase(it);
free((void *)longname);
if (GetDrivers().empty()) delete &GetDrivers();
free((void *)this->name);
}
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