ConfigFile - ConfigFile

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ConfigFile

Dependents: ConfigFile_TestProgram StarBoardOrangeExpansion1 StarBoardOrangeExpansion2 Drive2ChoroQ ... more

ConfigFile.cpp@1:f02e081afe42, 2010-09-12 (annotated)

Committer:: shintamainjp
Date:: Sun Sep 12 07:22:00 2010 +0000
Revision:: 1:f02e081afe42
Parent:: 0:6b4ba48753b9
Child:: 2:d8febae84a45

Who changed what in which revision?

User	Revision	Line number	New contents of line
shintamainjp	0:6b4ba48753b9	1	#include "ConfigFile.h"
shintamainjp	0:6b4ba48753b9	2
shintamainjp	0:6b4ba48753b9	3	ConfigFile::ConfigFile() {
shintamainjp	0:6b4ba48753b9	4	/*
shintamainjp	0:6b4ba48753b9	5	* Allocation for a config_t list.
shintamainjp	0:6b4ba48753b9	6	*/
shintamainjp	0:6b4ba48753b9	7	configlist = (config_t *)malloc(sizeof(config_t ) * MAXCONFIG);
shintamainjp	0:6b4ba48753b9	8	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	9	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	10	}
shintamainjp	0:6b4ba48753b9	11	}
shintamainjp	0:6b4ba48753b9	12
shintamainjp	0:6b4ba48753b9	13	ConfigFile::~ConfigFile() {
shintamainjp	0:6b4ba48753b9	14	/*
shintamainjp	0:6b4ba48753b9	15	* Remove all storage and the contents.
shintamainjp	0:6b4ba48753b9	16	*/
shintamainjp	0:6b4ba48753b9	17	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	18	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	19	if (cfg != NULL) {
shintamainjp	0:6b4ba48753b9	20	free(cfg->key);
shintamainjp	0:6b4ba48753b9	21	free(cfg->value);
shintamainjp	0:6b4ba48753b9	22	free(cfg);
shintamainjp	0:6b4ba48753b9	23	}
shintamainjp	0:6b4ba48753b9	24	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	25	}
shintamainjp	0:6b4ba48753b9	26
shintamainjp	0:6b4ba48753b9	27	/*
shintamainjp	0:6b4ba48753b9	28	* Remove cnofig_t list.
shintamainjp	0:6b4ba48753b9	29	*/
shintamainjp	0:6b4ba48753b9	30	free(configlist);
shintamainjp	0:6b4ba48753b9	31	configlist = NULL;
shintamainjp	0:6b4ba48753b9	32	}
shintamainjp	0:6b4ba48753b9	33
shintamainjp	1:f02e081afe42	34	bool ConfigFile::getValue(char key, char value, size_t siz) {
shintamainjp	0:6b4ba48753b9	35	/*
shintamainjp	0:6b4ba48753b9	36	* Null check.
shintamainjp	0:6b4ba48753b9	37	*/
shintamainjp	0:6b4ba48753b9	38	if (key == NULL) {
shintamainjp	1:f02e081afe42	39	return false;
shintamainjp	0:6b4ba48753b9	40	}
shintamainjp	0:6b4ba48753b9	41
shintamainjp	0:6b4ba48753b9	42	/*
shintamainjp	0:6b4ba48753b9	43	* Search a config_t object from the key.
shintamainjp	0:6b4ba48753b9	44	*/
shintamainjp	0:6b4ba48753b9	45	config_t *p = search(key);
shintamainjp	0:6b4ba48753b9	46	if (p == NULL) {
shintamainjp	1:f02e081afe42	47	return false;
shintamainjp	1:f02e081afe42	48	}
shintamainjp	1:f02e081afe42	49
shintamainjp	1:f02e081afe42	50	/*
shintamainjp	1:f02e081afe42	51	* Check the storage size.
shintamainjp	1:f02e081afe42	52	*/
shintamainjp	1:f02e081afe42	53	if (siz <= strlen(p->value)) {
shintamainjp	1:f02e081afe42	54	return false;
shintamainjp	0:6b4ba48753b9	55	}
shintamainjp	0:6b4ba48753b9	56
shintamainjp	0:6b4ba48753b9	57	/*
shintamainjp	1:f02e081afe42	58	* Copy the value to the storage.
shintamainjp	0:6b4ba48753b9	59	*/
shintamainjp	1:f02e081afe42	60	strcpy(value, p->value);
shintamainjp	1:f02e081afe42	61	return true;
shintamainjp	0:6b4ba48753b9	62	}
shintamainjp	0:6b4ba48753b9	63
shintamainjp	0:6b4ba48753b9	64	bool ConfigFile::setValue(char key, char value) {
shintamainjp	0:6b4ba48753b9	65	/*
shintamainjp	0:6b4ba48753b9	66	* Null check.
shintamainjp	0:6b4ba48753b9	67	*/
shintamainjp	0:6b4ba48753b9	68	if ((key == NULL) \|\| (value == NULL)) {
shintamainjp	0:6b4ba48753b9	69	return false;
shintamainjp	0:6b4ba48753b9	70	}
shintamainjp	0:6b4ba48753b9	71
shintamainjp	0:6b4ba48753b9	72	/*
shintamainjp	0:6b4ba48753b9	73	* Size check.
shintamainjp	0:6b4ba48753b9	74	*/
shintamainjp	0:6b4ba48753b9	75	if ((MAXLEN_KEY < strlen(key)) \|\| (MAXLEN_VALUE < strlen(value))) {
shintamainjp	0:6b4ba48753b9	76	return false;
shintamainjp	0:6b4ba48753b9	77	}
shintamainjp	0:6b4ba48753b9	78
shintamainjp	0:6b4ba48753b9	79	/*
shintamainjp	0:6b4ba48753b9	80	* Search a config_t object from the key.
shintamainjp	0:6b4ba48753b9	81	*/
shintamainjp	0:6b4ba48753b9	82	config_t *p = search(key);
shintamainjp	0:6b4ba48753b9	83	if (p == NULL) {
shintamainjp	0:6b4ba48753b9	84	/*
shintamainjp	0:6b4ba48753b9	85	* Allocation a memory for a new key.
shintamainjp	0:6b4ba48753b9	86	*/
shintamainjp	0:6b4ba48753b9	87	char k = (char )malloc(sizeof(char) * (strlen(key) + 1));
shintamainjp	0:6b4ba48753b9	88	if (k == NULL) {
shintamainjp	0:6b4ba48753b9	89	return false;
shintamainjp	0:6b4ba48753b9	90	}
shintamainjp	0:6b4ba48753b9	91	strcpy(k, key);
shintamainjp	0:6b4ba48753b9	92
shintamainjp	0:6b4ba48753b9	93	/*
shintamainjp	0:6b4ba48753b9	94	* Allocation a memory for a new value.
shintamainjp	0:6b4ba48753b9	95	*/
shintamainjp	0:6b4ba48753b9	96	char v = (char )malloc(sizeof(char) * (strlen(value) + 1));
shintamainjp	0:6b4ba48753b9	97	if (v == NULL) {
shintamainjp	0:6b4ba48753b9	98	free(k);
shintamainjp	0:6b4ba48753b9	99	return false;
shintamainjp	0:6b4ba48753b9	100	}
shintamainjp	0:6b4ba48753b9	101	strcpy(v, value);
shintamainjp	0:6b4ba48753b9	102
shintamainjp	0:6b4ba48753b9	103	/*
shintamainjp	0:6b4ba48753b9	104	* Allocation a memory for a new configuration.
shintamainjp	0:6b4ba48753b9	105	*/
shintamainjp	0:6b4ba48753b9	106	config_t cfg = (config_t )malloc(sizeof(config_t) * 1);
shintamainjp	0:6b4ba48753b9	107	if (cfg == NULL) {
shintamainjp	0:6b4ba48753b9	108	free(k);
shintamainjp	0:6b4ba48753b9	109	free(v);
shintamainjp	0:6b4ba48753b9	110	return false;
shintamainjp	0:6b4ba48753b9	111	}
shintamainjp	0:6b4ba48753b9	112	cfg->key = k;
shintamainjp	0:6b4ba48753b9	113	cfg->value = v;
shintamainjp	0:6b4ba48753b9	114
shintamainjp	0:6b4ba48753b9	115	/*
shintamainjp	0:6b4ba48753b9	116	* Add the new configuration.
shintamainjp	0:6b4ba48753b9	117	*/
shintamainjp	0:6b4ba48753b9	118	if (!add(cfg)) {
shintamainjp	0:6b4ba48753b9	119	free(k);
shintamainjp	0:6b4ba48753b9	120	free(v);
shintamainjp	0:6b4ba48753b9	121	free(cfg);
shintamainjp	0:6b4ba48753b9	122	return false;
shintamainjp	0:6b4ba48753b9	123	}
shintamainjp	0:6b4ba48753b9	124
shintamainjp	0:6b4ba48753b9	125	return true;
shintamainjp	0:6b4ba48753b9	126	} else {
shintamainjp	0:6b4ba48753b9	127	/*
shintamainjp	0:6b4ba48753b9	128	* The value is same.
shintamainjp	0:6b4ba48753b9	129	*/
shintamainjp	0:6b4ba48753b9	130	if (strcmp(value, p->value) == 0) {
shintamainjp	0:6b4ba48753b9	131	return true;
shintamainjp	0:6b4ba48753b9	132	}
shintamainjp	0:6b4ba48753b9	133
shintamainjp	0:6b4ba48753b9	134	/*
shintamainjp	0:6b4ba48753b9	135	* Free a memory for the value.
shintamainjp	0:6b4ba48753b9	136	*/
shintamainjp	0:6b4ba48753b9	137	free(p->value);
shintamainjp	0:6b4ba48753b9	138	p->value = NULL;
shintamainjp	0:6b4ba48753b9	139
shintamainjp	0:6b4ba48753b9	140	/*
shintamainjp	0:6b4ba48753b9	141	* Allocation memory for the new value.
shintamainjp	0:6b4ba48753b9	142	*/
shintamainjp	0:6b4ba48753b9	143	char v = (char )malloc(sizeof(char) * (strlen(value) + 1));
shintamainjp	0:6b4ba48753b9	144	if (v == NULL) {
shintamainjp	0:6b4ba48753b9	145	return false;
shintamainjp	0:6b4ba48753b9	146	}
shintamainjp	0:6b4ba48753b9	147
shintamainjp	0:6b4ba48753b9	148	/*
shintamainjp	0:6b4ba48753b9	149	* Store it.
shintamainjp	0:6b4ba48753b9	150	*/
shintamainjp	0:6b4ba48753b9	151	strcpy(v, value);
shintamainjp	0:6b4ba48753b9	152	p->value = v;
shintamainjp	0:6b4ba48753b9	153
shintamainjp	0:6b4ba48753b9	154	return true;
shintamainjp	0:6b4ba48753b9	155	}
shintamainjp	0:6b4ba48753b9	156	}
shintamainjp	0:6b4ba48753b9	157
shintamainjp	0:6b4ba48753b9	158	bool ConfigFile::remove(char *key) {
shintamainjp	0:6b4ba48753b9	159	if (key == NULL) {
shintamainjp	0:6b4ba48753b9	160	return false;
shintamainjp	0:6b4ba48753b9	161	}
shintamainjp	0:6b4ba48753b9	162	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	163	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	164	if (cfg != NULL) {
shintamainjp	0:6b4ba48753b9	165	if (strcmp(cfg->key, key) == 0) {
shintamainjp	0:6b4ba48753b9	166	free(cfg->key);
shintamainjp	0:6b4ba48753b9	167	free(cfg->value);
shintamainjp	0:6b4ba48753b9	168	free(cfg);
shintamainjp	0:6b4ba48753b9	169	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	170	return true;
shintamainjp	0:6b4ba48753b9	171	}
shintamainjp	0:6b4ba48753b9	172	}
shintamainjp	0:6b4ba48753b9	173	}
shintamainjp	0:6b4ba48753b9	174	return false;
shintamainjp	0:6b4ba48753b9	175	}
shintamainjp	0:6b4ba48753b9	176
shintamainjp	0:6b4ba48753b9	177	bool ConfigFile::removeAll(void) {
shintamainjp	0:6b4ba48753b9	178	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	179	config_t *p = configlist[i];
shintamainjp	0:6b4ba48753b9	180	if (p != NULL) {
shintamainjp	0:6b4ba48753b9	181	free(p->key);
shintamainjp	0:6b4ba48753b9	182	free(p->value);
shintamainjp	0:6b4ba48753b9	183	}
shintamainjp	0:6b4ba48753b9	184	free(p);
shintamainjp	0:6b4ba48753b9	185	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	186	}
shintamainjp	0:6b4ba48753b9	187	return true;
shintamainjp	0:6b4ba48753b9	188	}
shintamainjp	0:6b4ba48753b9	189
shintamainjp	0:6b4ba48753b9	190	bool ConfigFile::read(char *file) {
shintamainjp	0:6b4ba48753b9	191	/*
shintamainjp	0:6b4ba48753b9	192	* Open the target file.
shintamainjp	0:6b4ba48753b9	193	*/
shintamainjp	0:6b4ba48753b9	194	FILE *fp = fopen(file, "r");
shintamainjp	0:6b4ba48753b9	195	if (fp == NULL) {
shintamainjp	0:6b4ba48753b9	196	return false;
shintamainjp	0:6b4ba48753b9	197	}
shintamainjp	0:6b4ba48753b9	198
shintamainjp	0:6b4ba48753b9	199	/*
shintamainjp	0:6b4ba48753b9	200	* Remove all configuration.
shintamainjp	0:6b4ba48753b9	201	*/
shintamainjp	0:6b4ba48753b9	202	removeAll();
shintamainjp	0:6b4ba48753b9	203
shintamainjp	0:6b4ba48753b9	204	/*
shintamainjp	0:6b4ba48753b9	205	* Read from a file.
shintamainjp	0:6b4ba48753b9	206	*/
shintamainjp	0:6b4ba48753b9	207	char buf[MAXLEN_KEY + 8 + MAXLEN_VALUE];
shintamainjp	0:6b4ba48753b9	208	while (fgets(buf, sizeof(buf), fp) != NULL) {
shintamainjp	0:6b4ba48753b9	209	/*
shintamainjp	0:6b4ba48753b9	210	* Ignore a comment.
shintamainjp	0:6b4ba48753b9	211	*/
shintamainjp	0:6b4ba48753b9	212	if (buf[0] == '#') {
shintamainjp	0:6b4ba48753b9	213	continue;
shintamainjp	0:6b4ba48753b9	214	}
shintamainjp	0:6b4ba48753b9	215
shintamainjp	0:6b4ba48753b9	216	/*
shintamainjp	0:6b4ba48753b9	217	* Trim a return.
shintamainjp	0:6b4ba48753b9	218	*/
shintamainjp	0:6b4ba48753b9	219	const size_t len = strlen(buf);
shintamainjp	0:6b4ba48753b9	220	for (int i = 0; i < len; i++) {
shintamainjp	0:6b4ba48753b9	221	if ((buf[i] == '\r') \|\| (buf[i] == '\n')) {
shintamainjp	0:6b4ba48753b9	222	buf[i] = '\0';
shintamainjp	0:6b4ba48753b9	223	}
shintamainjp	0:6b4ba48753b9	224	}
shintamainjp	0:6b4ba48753b9	225
shintamainjp	0:6b4ba48753b9	226	/*
shintamainjp	0:6b4ba48753b9	227	* Separate key and value.
shintamainjp	0:6b4ba48753b9	228	*/
shintamainjp	0:6b4ba48753b9	229	char k[MAXLEN_KEY];
shintamainjp	0:6b4ba48753b9	230	char v[MAXLEN_VALUE];
shintamainjp	0:6b4ba48753b9	231	char *sp = strchr(buf, SEPARATOR);
shintamainjp	0:6b4ba48753b9	232	if (sp != NULL) {
shintamainjp	0:6b4ba48753b9	233	strcpy(v, sp + 1);
shintamainjp	0:6b4ba48753b9	234	*sp = '\0';
shintamainjp	0:6b4ba48753b9	235	strcpy(k, buf);
shintamainjp	0:6b4ba48753b9	236	setValue(k, v);
shintamainjp	0:6b4ba48753b9	237	}
shintamainjp	0:6b4ba48753b9	238	}
shintamainjp	0:6b4ba48753b9	239	fclose(fp);
shintamainjp	0:6b4ba48753b9	240	return true;
shintamainjp	0:6b4ba48753b9	241	}
shintamainjp	0:6b4ba48753b9	242
shintamainjp	0:6b4ba48753b9	243	bool ConfigFile::write(char *file) {
shintamainjp	0:6b4ba48753b9	244	FILE *fp = fopen(file, "w");
shintamainjp	0:6b4ba48753b9	245	if (fp == NULL) {
shintamainjp	0:6b4ba48753b9	246	return false;
shintamainjp	0:6b4ba48753b9	247	}
shintamainjp	0:6b4ba48753b9	248
shintamainjp	0:6b4ba48753b9	249	static const char *NEWLINE_UNIX = "\n";
shintamainjp	0:6b4ba48753b9	250	static const char *NEWLINE_DOS = "\r\n";
shintamainjp	0:6b4ba48753b9	251	static const char *NEWLINE_MAC = "\r";
shintamainjp	0:6b4ba48753b9	252	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	253	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	254	if (cfg != NULL) {
shintamainjp	0:6b4ba48753b9	255	fprintf(fp, "%s=%s%s", cfg->key, cfg->value, NEWLINE_UNIX);
shintamainjp	0:6b4ba48753b9	256	}
shintamainjp	0:6b4ba48753b9	257	}
shintamainjp	0:6b4ba48753b9	258	fclose(fp);
shintamainjp	0:6b4ba48753b9	259	return true;
shintamainjp	0:6b4ba48753b9	260	}
shintamainjp	0:6b4ba48753b9	261
shintamainjp	0:6b4ba48753b9	262	ConfigFile::config_t ConfigFile::search(char key) {
shintamainjp	0:6b4ba48753b9	263	if (key == NULL) {
shintamainjp	0:6b4ba48753b9	264	return NULL;
shintamainjp	0:6b4ba48753b9	265	}
shintamainjp	0:6b4ba48753b9	266	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	267	if (configlist[i] != NULL) {
shintamainjp	0:6b4ba48753b9	268	if (strcmp(configlist[i]->key, key) == 0) {
shintamainjp	0:6b4ba48753b9	269	return configlist[i];
shintamainjp	0:6b4ba48753b9	270	}
shintamainjp	0:6b4ba48753b9	271	}
shintamainjp	0:6b4ba48753b9	272	}
shintamainjp	0:6b4ba48753b9	273	return NULL;
shintamainjp	0:6b4ba48753b9	274	}
shintamainjp	0:6b4ba48753b9	275
shintamainjp	0:6b4ba48753b9	276	bool ConfigFile::add(config_t *cfg) {
shintamainjp	0:6b4ba48753b9	277	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	278	if (configlist[i] == NULL) {
shintamainjp	0:6b4ba48753b9	279	configlist[i] = cfg;
shintamainjp	0:6b4ba48753b9	280	return true;
shintamainjp	0:6b4ba48753b9	281	}
shintamainjp	0:6b4ba48753b9	282	}
shintamainjp	0:6b4ba48753b9	283	return false;
shintamainjp	0:6b4ba48753b9	284	}

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Type:	Library
Created:	12 Sep 2010
Imports:	2186
Forks:	5
Commits:	7
Dependents:	51
Dependencies:	0
Followers:	54

ConfigFile.cpp@1:f02e081afe42, 2010-09-12 (annotated)

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