/** function to generate a People "object" from a preferences description */
static NftResult _people_from_prefs(NftPrefs *p, void **newObj, NftPrefsNode *node, void *userptr)
{
people.people_count = sizeof(persons)/sizeof(struct Person);
/* call toObj() of child objects */
NftPrefsNode *child;
size_t i = 0;
for(child = nft_prefs_node_get_first_child(node);
child;
child = nft_prefs_node_get_next(child))
{
if(i >= sizeof(persons)/sizeof(struct Person))
{
NFT_LOG(L_ERROR, "more persons in prefs file than expected");
return NFT_FAILURE;
}
/* call toObj function of child node (should be a <person> node) */
if(!(people.people[i++] = nft_prefs_obj_from_node(p, child, userptr)))
{
NFT_LOG(L_ERROR, "Failed to create object from preference node");
return NFT_FAILURE;
}
}
/* save pointer to new object */
*newObj = &people;
return NFT_SUCCESS;
}
/**
* generate LedHardware from LedPrefsNode
*
* @param p LedPrefs context
* @param n LedPrefsNode
* @result newly created LedHardware
*/
LedHardware *led_prefs_hardware_from_node(LedPrefs * p, LedPrefsNode * n)
{
if(!p || !n)
NFT_LOG_NULL(NULL);
/* check if node is of expected class */
if(strcmp(nft_prefs_node_get_name(n), LED_HARDWARE_NAME) != 0)
{
NFT_LOG(L_ERROR,
"got wrong LedPrefsNode class. Expected \"%s\" but got \"%s\"",
LED_HARDWARE_NAME, nft_prefs_node_get_name(n));
return NULL;
}
return nft_prefs_obj_from_node(p, n, NULL);
}
/**
* generate LedChain from LedPrefsNode
*
* @param p LedPrefs context
* @param n LedPrefsNode
* @result newly created LedChain
*/
LedChain *led_prefs_chain_from_node(LedPrefs * p, LedPrefsNode * n)
{
if(!p || !n)
NFT_LOG_NULL(NULL);
/* check if node is of expected class */
if(!led_prefs_is_chain_node(n))
{
NFT_LOG(L_ERROR,
"got wrong LedPrefsNode class. Expected \"%s\" but got \"%s\"",
LED_CHAIN_NAME, nft_prefs_node_get_name(n));
return NULL;
}
return nft_prefs_obj_from_node(p, n, NULL);
}
/* save pointer to new object */
*newObj = &persons[i++];
return NFT_SUCCESS;
}
//~ /** create object from preferences definition */
int main(int argc, char *argv[])
{
/* do preliminary version checks */
NFT_PREFS_CHECK_VERSION
/* fail per default */
int result = EXIT_FAILURE;
/* initialize libniftyprefs */
NftPrefs *prefs;
if(!(prefs = nft_prefs_init()))
{
NFT_LOG(L_ERROR, "initialize prefs");
goto _deinit;
}
/* register "people" class to niftyprefs */
if(!(nft_prefs_class_register(prefs, PEOPLE_NAME, &_people_from_prefs, NULL)))
{
NFT_LOG(L_ERROR, "failed to register class");
goto _deinit;
}
/* register "person" class to niftyprefs */
if(!(nft_prefs_class_register(prefs, PERSON_NAME, &_person_from_prefs, NULL)))
{
NFT_LOG(L_ERROR, "failed to register class");
goto _deinit;
}
/* parse file to prefs node */
NftPrefsNode *node;
if(!(node = nft_prefs_node_from_file("test-prefs.xml")))
{
NFT_LOG(L_ERROR, "failed to parse prefs file \"test-prefs.xml\"");
goto _deinit;
}
/* create object from node */
struct People *people;
if(!(people = nft_prefs_obj_from_node(prefs, node, NULL)))
{
NFT_LOG(L_ERROR, "failed to create object from prefs node");
goto _deinit;
}
/* free node */
nft_prefs_node_free(node);
/* process all persons */
size_t n;
for(n=0; n < people->people_count; n++)
{
/* print info */
printf("\tperson(name=\"%s\",email=\"%s\", age=\"%d\", vitality=\"%s\")\n",
people->people[n]->name,
people->people[n]->email,
people->people[n]->age,
people->people[n]->alive ? "alive" : "dead");
}
/* we should get what we put in */
if((strcmp(people->people[0]->name, "Bob") != 0) ||
(strcmp(people->people[0]->email, "*****@*****.**") != 0) ||
(people->people[0]->age != 30) ||
(people->people[0]->alive != true) ||
(strcmp(people->people[1]->name, "Alice") != 0) ||
(strcmp(people->people[1]->email, "*****@*****.**") != 0) ||
(people->people[1]->age != 30) ||
(people->people[1]->alive != false))
{
NFT_LOG(L_ERROR, "Input from 01_obj-to-prefs.c doesn't match output!");
goto _deinit;
}
/** @todo check xml against DTD */
/* all went fine */
result = EXIT_SUCCESS;
_deinit:
nft_prefs_deinit(prefs);
return result;
}
/**
* Config-to-Object function.
* Creates a LedSetup model from a prefs node
* @note you shouldn't call this function directly
* It's used by nft_prefs_obj_from_node() etc.
*/
static NftResult _prefs_to_setup(LedPrefs * p, void **newObj,
NftPrefsNode * n, void *userptr)
{
if(!p || !newObj)
NFT_LOG_NULL(NFT_FAILURE);
/* new setup */
LedSetup *s;
/* new setup */
if(!(s = led_setup_new()))
{
NFT_LOG(L_ERROR, "Failed to create new LedSetup object");
return NFT_FAILURE;
}
/* walk all child nodes and process them */
NftPrefsNode *child;
for(child = nft_prefs_node_get_first_child(n);
child; child = nft_prefs_node_get_next(child))
{
/* check if node describes a LedHardware object */
if(!led_prefs_is_hardware_node(child))
{
NFT_LOG(L_ERROR,
"\"%s\" object may only contain \"%s\" children but got \"%s\"",
LED_SETUP_NAME, LED_HARDWARE_NAME,
nft_prefs_node_get_name(child));
goto _pts_error;
}
/* call toObj function of child node */
LedHardware *hw;
if(!(hw = nft_prefs_obj_from_node(p, child, userptr)))
{
NFT_LOG(L_ERROR,
"Failed to create object from preference node");
return NFT_FAILURE;
}
/* register first hardware */
if(!led_setup_get_hardware(s))
{
led_setup_set_hardware(s, hw);
}
/* attach hardware to list */
else
{
if(!led_hardware_list_append_head
(led_setup_get_hardware(s), hw))
{
NFT_LOG(L_ERROR,
"Failed to append LedHardware as sibling");
return NFT_FAILURE;
}
}
}
/* save new setup-object to "newObj" pointer */
*newObj = s;
return NFT_SUCCESS;
_pts_error:
led_setup_destroy(s);
return NFT_FAILURE;
}
int main(int argc, char *argv[])
{
int result = EXIT_FAILURE;
/* do preliminary version checks */
if(!NFT_PREFS_CHECK_VERSION)
return EXIT_FAILURE;
/* set loglevel */
nft_log_level_set(L_MAX);
/* initialize libniftyprefs */
NftPrefs *prefs;
if(!(prefs = nft_prefs_init(1)))
{
NFT_LOG(L_ERROR, "initialize prefs");
goto _deinit;
}
/* register "people" class to niftyprefs */
if(!
(nft_prefs_class_register
(prefs, PEOPLE_NAME, &_people_from_prefs, NULL)))
{
NFT_LOG(L_ERROR, "failed to register class");
goto _deinit;
}
/* register "person" class to niftyprefs */
if(!
(nft_prefs_class_register
(prefs, PERSON_NAME, &_person_from_prefs, NULL)))
{
NFT_LOG(L_ERROR, "failed to register class");
goto _deinit;
}
/* register updater for v0 "person" nodes */
if(!nft_prefs_updater_register(prefs, _update_person, PERSON_NAME, 0, NULL))
{
NFT_LOG(L_ERROR, "failed to register updater");
goto _deinit;
}
/* parse file to prefs node */
NftPrefsNode *node;
if(!(node = nft_prefs_node_from_file(prefs, "test-prefs.xml")))
{
NFT_LOG(L_ERROR,
"failed to parse prefs file \"test-prefs.xml\"");
goto _deinit;
}
/* dump updated node to file */
if(!nft_prefs_node_to_file(prefs, node, "test-prefs_updated.xml", true))
{
NFT_LOG(L_ERROR,
"failed to save prefs file \"test-prefs_updated.xml\"");
goto _deinit;
}
/* create object from node */
struct People *people;
if(!(people = nft_prefs_obj_from_node(prefs, node, NULL)))
{
NFT_LOG(L_ERROR, "failed to create object from prefs node");
goto _deinit;
}
/* free node */
nft_prefs_node_free(node);
/* process all persons */
size_t n;
for(n = 0; n < people->people_count; n++)
{
/* print info */
printf("\tperson(name=\"%s\", email=\"%s@%s\", age=\"%d\", vitality=\"%s\")\n",
people->people[n]->name,
people->people[n]->email_user,
people->people[n]->email_host,
people->people[n]->age,
people->people[n]->alive ? "alive" : "dead");
}
/* we should get what we put in */
if((strcmp(people->people[0]->name, "Bob") != 0) ||
(strcmp(people->people[0]->email_user, "bob") != 0) ||
(strcmp(people->people[0]->email_host, "example.com") != 0) ||
(people->people[0]->age != 30) ||
(people->people[0]->alive != true) ||
(strcmp(people->people[1]->name, "Alice") != 0) ||
(strcmp(people->people[1]->email_user, "alice") != 0) ||
(strcmp(people->people[1]->email_host, "example.com") != 0) ||
(people->people[1]->age != 30) ||
(people->people[1]->alive != false))
{
NFT_LOG(L_ERROR,
"Updated input doesn't match output!");
goto _deinit;
}
/* all good */
result = EXIT_SUCCESS;
_deinit:
nft_prefs_deinit(prefs);
return result;
}