Copied on 09 Aug 2012.
Fork of ConfigFile by
Diff: ConfigFile.cpp
- Revision:
- 0:6b4ba48753b9
- Child:
- 1:f02e081afe42
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ConfigFile.cpp Sun Sep 12 07:11:54 2010 +0000 @@ -0,0 +1,276 @@ +#include "ConfigFile.h" + +ConfigFile::ConfigFile() { + /* + * Allocation for a config_t list. + */ + configlist = (config_t **)malloc(sizeof(config_t *) * MAXCONFIG); + for (int i = 0; i < MAXCONFIG; i++) { + configlist[i] = NULL; + } +} + +ConfigFile::~ConfigFile() { + /* + * Remove all storage and the contents. + */ + for (int i = 0; i < MAXCONFIG; i++) { + config_t *cfg = configlist[i]; + if (cfg != NULL) { + free(cfg->key); + free(cfg->value); + free(cfg); + } + configlist[i] = NULL; + } + + /* + * Remove cnofig_t list. + */ + free(configlist); + configlist = NULL; +} + +char *ConfigFile::getValue(char *key) { + /* + * Null check. + */ + if (key == NULL) { + return NULL; + } + + /* + * Search a config_t object from the key. + */ + config_t *p = search(key); + if (p == NULL) { + return NULL; + } + + /* + * Return the value. + */ + return p->value; +} + +bool ConfigFile::setValue(char *key, char *value) { + /* + * Null check. + */ + if ((key == NULL) || (value == NULL)) { + return false; + } + + /* + * Size check. + */ + if ((MAXLEN_KEY < strlen(key)) || (MAXLEN_VALUE < strlen(value))) { + return false; + } + + /* + * Search a config_t object from the key. + */ + config_t *p = search(key); + if (p == NULL) { + /* + * Allocation a memory for a new key. + */ + char *k = (char *)malloc(sizeof(char) * (strlen(key) + 1)); + if (k == NULL) { + return false; + } + strcpy(k, key); + + /* + * Allocation a memory for a new value. + */ + char *v = (char *)malloc(sizeof(char) * (strlen(value) + 1)); + if (v == NULL) { + free(k); + return false; + } + strcpy(v, value); + + /* + * Allocation a memory for a new configuration. + */ + config_t *cfg = (config_t *)malloc(sizeof(config_t) * 1); + if (cfg == NULL) { + free(k); + free(v); + return false; + } + cfg->key = k; + cfg->value = v; + + /* + * Add the new configuration. + */ + if (!add(cfg)) { + free(k); + free(v); + free(cfg); + return false; + } + + return true; + } else { + /* + * The value is same. + */ + if (strcmp(value, p->value) == 0) { + return true; + } + + /* + * Free a memory for the value. + */ + free(p->value); + p->value = NULL; + + /* + * Allocation memory for the new value. + */ + char *v = (char *)malloc(sizeof(char) * (strlen(value) + 1)); + if (v == NULL) { + return false; + } + + /* + * Store it. + */ + strcpy(v, value); + p->value = v; + + return true; + } +} + +bool ConfigFile::remove(char *key) { + if (key == NULL) { + return false; + } + for (int i = 0; i < MAXCONFIG; i++) { + config_t *cfg = configlist[i]; + if (cfg != NULL) { + if (strcmp(cfg->key, key) == 0) { + free(cfg->key); + free(cfg->value); + free(cfg); + configlist[i] = NULL; + return true; + } + } + } + return false; +} + +bool ConfigFile::removeAll(void) { + for (int i = 0; i < MAXCONFIG; i++) { + config_t *p = configlist[i]; + if (p != NULL) { + free(p->key); + free(p->value); + } + free(p); + configlist[i] = NULL; + } + return true; +} + +bool ConfigFile::read(char *file) { + /* + * Open the target file. + */ + FILE *fp = fopen(file, "r"); + if (fp == NULL) { + return false; + } + + /* + * Remove all configuration. + */ + removeAll(); + + /* + * Read from a file. + */ + char buf[MAXLEN_KEY + 8 + MAXLEN_VALUE]; + while (fgets(buf, sizeof(buf), fp) != NULL) { + /* + * Ignore a comment. + */ + if (buf[0] == '#') { + continue; + } + + /* + * Trim a return. + */ + const size_t len = strlen(buf); + for (int i = 0; i < len; i++) { + if ((buf[i] == '\r') || (buf[i] == '\n')) { + buf[i] = '\0'; + } + } + + /* + * Separate key and value. + */ + char k[MAXLEN_KEY]; + char v[MAXLEN_VALUE]; + char *sp = strchr(buf, SEPARATOR); + if (sp != NULL) { + strcpy(v, sp + 1); + *sp = '\0'; + strcpy(k, buf); + setValue(k, v); + } + } + fclose(fp); + return true; +} + +bool ConfigFile::write(char *file) { + FILE *fp = fopen(file, "w"); + if (fp == NULL) { + return false; + } + + static const char *NEWLINE_UNIX = "\n"; + static const char *NEWLINE_DOS = "\r\n"; + static const char *NEWLINE_MAC = "\r"; + for (int i = 0; i < MAXCONFIG; i++) { + config_t *cfg = configlist[i]; + if (cfg != NULL) { + fprintf(fp, "%s=%s%s", cfg->key, cfg->value, NEWLINE_UNIX); + } + } + fclose(fp); + return true; +} + +ConfigFile::config_t *ConfigFile::search(char *key) { + if (key == NULL) { + return NULL; + } + for (int i = 0; i < MAXCONFIG; i++) { + if (configlist[i] != NULL) { + if (strcmp(configlist[i]->key, key) == 0) { + return configlist[i]; + } + } + } + return NULL; +} + +bool ConfigFile::add(config_t *cfg) { + for (int i = 0; i < MAXCONFIG; i++) { + if (configlist[i] == NULL) { + configlist[i] = cfg; + return true; + } + } + return false; +} \ No newline at end of file