/* Value Setting */
void Dictionary_setValueForKey(SCDictionary* self, SCValue* value, const char* key) {
SCDictionary* temp = _Dictionary_findKey(self, key);
if (temp) {
Value_free(temp->value);
temp->value = value;
return;
}
temp = _Dictionary_findLast(self);
if (temp == self && !temp->key) {
self->key = strdup(key);
self->value = value;
return;
}
self = Dictionary_new();
self->tree_left = temp;
temp->tree_right = self;
self->key = strdup(key);
self->value = value;
}
/**
* \brief Read a configuration file into a Dictionary
*
* Parse the configuration file as described above and store all the key/value
* pairs into a Dictionary which is returned.
*
* \param filename The file to read
* \return A Dictionary mapping the key/value pairs or NULL if an error occurs
*/
Dictionary* Config_readFile(const char* filename) {
FILE* config_file = fopen(filename, "r");
Dictionary* config = NULL;
char* option;
char* value;
int i, tmp = 0;
char line[MAX_LINE];
bool comment;
/* Reset config_errno to success */
config_errno = CONFIG_SUCCESS;
config_lineno = 0;
/* Configuration file opened alright? */
if(config_file == NULL) {
config_errno = CONFIG_EFILEACCESS;
goto config_error;
}
/* Create the dictionary object */
config = Dictionary_new();
/* Read in line by line until EOF to get each configuration option */
while(true) {
line[0] = '\0';
/* Read until we find a non empty line */
while(strcmp(line, "") == 0) {
i = 0;
comment = false;
/* Read line */
while(true) {
tmp = fgetc(config_file);
/* End of input/line */
if(tmp == EOF || tmp == '\n') {
break;
}
/* Start of a comment */
if(tmp == '#') {
comment = true;
}
/* If we're in a comment discard characters */
if(!comment) {
line[i++] = tmp;
}
/* Ran out of space. Line too long */
if(i >= MAX_LINE) {
config_errno = CONFIG_ELINETOOLONG;
goto config_error;
}
}
config_lineno++;
line[i] = '\0';
/* Strip white space from entire line */
Util_strip(line);
/* If the line is empty and we have reached the end of file then
return */
if(tmp == EOF && strcmp(line, "") == 0) {
fclose(config_file);
return config;
}
}
/* Split the line */
option = value = line;
for(i = 0; line[i] != '\0'; i++) {
if(line[i] == '=') {
line[i] = '\0';
value = line + i + 1;
break;
}
}
/* Never found '=' in the line */
if(option == value) {
config_errno = CONFIG_EPARSE;
goto config_error;
}
/* Strip spaces from components */
Util_strip(option);
Util_strip(value);
/* Store the pair */
Dictionary_set(config, option, strdup(value));
}
config_error:
if(config != NULL) {
List* options = Dictionary_getKeys(config);
char* option;
/* Free memory allocated to config values */
while(List_getSize(options)) {
option = List_remove(options, 0);
free(Dictionary_get(config, option));
}
List_destroy(options);
Dictionary_destroy(config);
}
if(config_file != NULL) {
fclose(config_file);
}
return NULL;
}
/**
* \brief Process the configuration file
*
* Read the configuration file and populate the configuration dictionary
*/
static void Hub_Config_processConfig(void) {
Dictionary* temp_config;
List* options;
char* option;
char* value;
/* Initialize config table with default options */
config = Dictionary_new();
for(int i = 0; i < sizeof(valid_options) / sizeof(valid_options[0]); i++) {
Dictionary_set(config, valid_options[i].option, strdup(valid_options[i].default_value));
}
/* Locate a configuration file */
if(Hub_Config_chooseConfigFile() == false) {
Hub_Logging_log(WARNING, "Could not find configuration file! Continuing with default configuration!");
return;
}
/* Attempt to read the configuration file */
temp_config = Config_readFile(hub_config_file);
/* Error handling for Config_readFile */
if(temp_config == NULL) {
switch(Config_getError()) {
case CONFIG_EFILEACCESS:
Hub_Logging_log(WARNING, Util_format("Failed to open configuration file: %s", strerror(errno)));
break;
case CONFIG_ELINETOOLONG:
Hub_Logging_log(CRITICAL, Util_format("Line exceeded maximum allowable length at line %d", Config_getLineNumber()));
break;
case CONFIG_EPARSE:
Hub_Logging_log(CRITICAL, Util_format("Parse error occured on line %d", Config_getLineNumber()));
break;
default:
Hub_Logging_log(CRITICAL, "Unknown error occured while reading configuration file");
break;
}
/* Bail out and exit */
Hub_exitError();
}
/* Get the list of configuration options in the file */
options = Dictionary_getKeys(temp_config);
/* Check each configuration option and if it is valid store it in the real
configuration table */
while(List_getSize(options)) {
/* Remove the first item from the list */
option = List_remove(options, 0);
value = Dictionary_get(temp_config, option);
if(Dictionary_exists(config, option)) {
/* Valid option, free old value, store new value */
free(Dictionary_get(config, option));
Dictionary_set(config, option, value);
} else {
Hub_Logging_log(WARNING, Util_format("Unknown configuration option '%s'", option));
}
}
List_destroy(options);
Dictionary_destroy(temp_config);
}
/**
* \brief Var component initialization
* \private
*/
void Var_init(void) {
ro_cache = Dictionary_new();
subscriptions = Dictionary_new();
initialized = true;
}
