ConfigFile - Changed general file descriptors to specific for …

Engravity-CDU » Code » ConfigFile

Engravity-CDU / ConfigFile

Changed general file descriptors to specific for CDU

Dependents: CDUFinal CDU_Mbed_36

Fork of ConfigFile by Shinichiro Nakamura

ConfigFile.cpp@4:940510a29b44, 2010-09-12 (annotated)

Committer:: shintamainjp
Date:: Sun Sep 12 07:53:10 2010 +0000
Revision:: 4:940510a29b44
Parent:: 3:7250e339328c
Child:: 5:56d544b8e5c6

Who changed what in which revision?

User	Revision	Line number	New contents of line
shintamainjp	3:7250e339328c	1	/**
shintamainjp	3:7250e339328c	2	* Configuration file interface class (Version 0.0.1)
shintamainjp	3:7250e339328c	3	*
shintamainjp	3:7250e339328c	4	* Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
shintamainjp	3:7250e339328c	5	* http://shinta.main.jp/
shintamainjp	3:7250e339328c	6	*/
shintamainjp	0:6b4ba48753b9	7	#include "ConfigFile.h"
shintamainjp	0:6b4ba48753b9	8
shintamainjp	2:d8febae84a45	9	#define NEWLINE_UNIX "\n"
shintamainjp	2:d8febae84a45	10	#define NEWLINE_DOS "\r\n"
shintamainjp	2:d8febae84a45	11	#define NEWLINE_MAC "\r"
shintamainjp	2:d8febae84a45	12
shintamainjp	0:6b4ba48753b9	13	ConfigFile::ConfigFile() {
shintamainjp	0:6b4ba48753b9	14	/*
shintamainjp	0:6b4ba48753b9	15	* Allocation for a config_t list.
shintamainjp	0:6b4ba48753b9	16	*/
shintamainjp	0:6b4ba48753b9	17	configlist = (config_t *)malloc(sizeof(config_t ) * MAXCONFIG);
shintamainjp	0:6b4ba48753b9	18	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	19	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	20	}
shintamainjp	0:6b4ba48753b9	21	}
shintamainjp	0:6b4ba48753b9	22
shintamainjp	0:6b4ba48753b9	23	ConfigFile::~ConfigFile() {
shintamainjp	0:6b4ba48753b9	24	/*
shintamainjp	0:6b4ba48753b9	25	* Remove all storage and the contents.
shintamainjp	0:6b4ba48753b9	26	*/
shintamainjp	0:6b4ba48753b9	27	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	28	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	29	if (cfg != NULL) {
shintamainjp	0:6b4ba48753b9	30	free(cfg->key);
shintamainjp	0:6b4ba48753b9	31	free(cfg->value);
shintamainjp	0:6b4ba48753b9	32	free(cfg);
shintamainjp	0:6b4ba48753b9	33	}
shintamainjp	0:6b4ba48753b9	34	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	35	}
shintamainjp	0:6b4ba48753b9	36
shintamainjp	0:6b4ba48753b9	37	/*
shintamainjp	0:6b4ba48753b9	38	* Remove cnofig_t list.
shintamainjp	0:6b4ba48753b9	39	*/
shintamainjp	0:6b4ba48753b9	40	free(configlist);
shintamainjp	0:6b4ba48753b9	41	configlist = NULL;
shintamainjp	0:6b4ba48753b9	42	}
shintamainjp	0:6b4ba48753b9	43
shintamainjp	1:f02e081afe42	44	bool ConfigFile::getValue(char key, char value, size_t siz) {
shintamainjp	0:6b4ba48753b9	45	/*
shintamainjp	0:6b4ba48753b9	46	* Null check.
shintamainjp	0:6b4ba48753b9	47	*/
shintamainjp	0:6b4ba48753b9	48	if (key == NULL) {
shintamainjp	1:f02e081afe42	49	return false;
shintamainjp	0:6b4ba48753b9	50	}
shintamainjp	0:6b4ba48753b9	51
shintamainjp	0:6b4ba48753b9	52	/*
shintamainjp	0:6b4ba48753b9	53	* Search a config_t object from the key.
shintamainjp	0:6b4ba48753b9	54	*/
shintamainjp	0:6b4ba48753b9	55	config_t *p = search(key);
shintamainjp	0:6b4ba48753b9	56	if (p == NULL) {
shintamainjp	1:f02e081afe42	57	return false;
shintamainjp	1:f02e081afe42	58	}
shintamainjp	2:d8febae84a45	59
shintamainjp	1:f02e081afe42	60	/*
shintamainjp	1:f02e081afe42	61	* Check the storage size.
shintamainjp	1:f02e081afe42	62	*/
shintamainjp	1:f02e081afe42	63	if (siz <= strlen(p->value)) {
shintamainjp	1:f02e081afe42	64	return false;
shintamainjp	0:6b4ba48753b9	65	}
shintamainjp	0:6b4ba48753b9	66
shintamainjp	0:6b4ba48753b9	67	/*
shintamainjp	1:f02e081afe42	68	* Copy the value to the storage.
shintamainjp	0:6b4ba48753b9	69	*/
shintamainjp	1:f02e081afe42	70	strcpy(value, p->value);
shintamainjp	1:f02e081afe42	71	return true;
shintamainjp	0:6b4ba48753b9	72	}
shintamainjp	0:6b4ba48753b9	73
shintamainjp	0:6b4ba48753b9	74	bool ConfigFile::setValue(char key, char value) {
shintamainjp	0:6b4ba48753b9	75	/*
shintamainjp	0:6b4ba48753b9	76	* Null check.
shintamainjp	0:6b4ba48753b9	77	*/
shintamainjp	0:6b4ba48753b9	78	if ((key == NULL) \|\| (value == NULL)) {
shintamainjp	0:6b4ba48753b9	79	return false;
shintamainjp	0:6b4ba48753b9	80	}
shintamainjp	0:6b4ba48753b9	81
shintamainjp	0:6b4ba48753b9	82	/*
shintamainjp	0:6b4ba48753b9	83	* Size check.
shintamainjp	0:6b4ba48753b9	84	*/
shintamainjp	0:6b4ba48753b9	85	if ((MAXLEN_KEY < strlen(key)) \|\| (MAXLEN_VALUE < strlen(value))) {
shintamainjp	0:6b4ba48753b9	86	return false;
shintamainjp	0:6b4ba48753b9	87	}
shintamainjp	0:6b4ba48753b9	88
shintamainjp	0:6b4ba48753b9	89	/*
shintamainjp	0:6b4ba48753b9	90	* Search a config_t object from the key.
shintamainjp	0:6b4ba48753b9	91	*/
shintamainjp	0:6b4ba48753b9	92	config_t *p = search(key);
shintamainjp	0:6b4ba48753b9	93	if (p == NULL) {
shintamainjp	0:6b4ba48753b9	94	/*
shintamainjp	0:6b4ba48753b9	95	* Allocation a memory for a new key.
shintamainjp	0:6b4ba48753b9	96	*/
shintamainjp	0:6b4ba48753b9	97	char k = (char )malloc(sizeof(char) * (strlen(key) + 1));
shintamainjp	0:6b4ba48753b9	98	if (k == NULL) {
shintamainjp	0:6b4ba48753b9	99	return false;
shintamainjp	0:6b4ba48753b9	100	}
shintamainjp	0:6b4ba48753b9	101	strcpy(k, key);
shintamainjp	0:6b4ba48753b9	102
shintamainjp	0:6b4ba48753b9	103	/*
shintamainjp	0:6b4ba48753b9	104	* Allocation a memory for a new value.
shintamainjp	0:6b4ba48753b9	105	*/
shintamainjp	0:6b4ba48753b9	106	char v = (char )malloc(sizeof(char) * (strlen(value) + 1));
shintamainjp	0:6b4ba48753b9	107	if (v == NULL) {
shintamainjp	0:6b4ba48753b9	108	free(k);
shintamainjp	0:6b4ba48753b9	109	return false;
shintamainjp	0:6b4ba48753b9	110	}
shintamainjp	0:6b4ba48753b9	111	strcpy(v, value);
shintamainjp	0:6b4ba48753b9	112
shintamainjp	0:6b4ba48753b9	113	/*
shintamainjp	0:6b4ba48753b9	114	* Allocation a memory for a new configuration.
shintamainjp	0:6b4ba48753b9	115	*/
shintamainjp	0:6b4ba48753b9	116	config_t cfg = (config_t )malloc(sizeof(config_t) * 1);
shintamainjp	0:6b4ba48753b9	117	if (cfg == NULL) {
shintamainjp	0:6b4ba48753b9	118	free(k);
shintamainjp	0:6b4ba48753b9	119	free(v);
shintamainjp	0:6b4ba48753b9	120	return false;
shintamainjp	0:6b4ba48753b9	121	}
shintamainjp	0:6b4ba48753b9	122	cfg->key = k;
shintamainjp	0:6b4ba48753b9	123	cfg->value = v;
shintamainjp	0:6b4ba48753b9	124
shintamainjp	0:6b4ba48753b9	125	/*
shintamainjp	0:6b4ba48753b9	126	* Add the new configuration.
shintamainjp	0:6b4ba48753b9	127	*/
shintamainjp	0:6b4ba48753b9	128	if (!add(cfg)) {
shintamainjp	0:6b4ba48753b9	129	free(k);
shintamainjp	0:6b4ba48753b9	130	free(v);
shintamainjp	0:6b4ba48753b9	131	free(cfg);
shintamainjp	0:6b4ba48753b9	132	return false;
shintamainjp	0:6b4ba48753b9	133	}
shintamainjp	0:6b4ba48753b9	134
shintamainjp	0:6b4ba48753b9	135	return true;
shintamainjp	0:6b4ba48753b9	136	} else {
shintamainjp	0:6b4ba48753b9	137	/*
shintamainjp	0:6b4ba48753b9	138	* The value is same.
shintamainjp	0:6b4ba48753b9	139	*/
shintamainjp	0:6b4ba48753b9	140	if (strcmp(value, p->value) == 0) {
shintamainjp	0:6b4ba48753b9	141	return true;
shintamainjp	0:6b4ba48753b9	142	}
shintamainjp	0:6b4ba48753b9	143
shintamainjp	0:6b4ba48753b9	144	/*
shintamainjp	0:6b4ba48753b9	145	* Free a memory for the value.
shintamainjp	0:6b4ba48753b9	146	*/
shintamainjp	0:6b4ba48753b9	147	free(p->value);
shintamainjp	0:6b4ba48753b9	148	p->value = NULL;
shintamainjp	0:6b4ba48753b9	149
shintamainjp	0:6b4ba48753b9	150	/*
shintamainjp	0:6b4ba48753b9	151	* Allocation memory for the new value.
shintamainjp	0:6b4ba48753b9	152	*/
shintamainjp	0:6b4ba48753b9	153	char v = (char )malloc(sizeof(char) * (strlen(value) + 1));
shintamainjp	0:6b4ba48753b9	154	if (v == NULL) {
shintamainjp	0:6b4ba48753b9	155	return false;
shintamainjp	0:6b4ba48753b9	156	}
shintamainjp	0:6b4ba48753b9	157
shintamainjp	0:6b4ba48753b9	158	/*
shintamainjp	0:6b4ba48753b9	159	* Store it.
shintamainjp	0:6b4ba48753b9	160	*/
shintamainjp	0:6b4ba48753b9	161	strcpy(v, value);
shintamainjp	0:6b4ba48753b9	162	p->value = v;
shintamainjp	0:6b4ba48753b9	163
shintamainjp	0:6b4ba48753b9	164	return true;
shintamainjp	0:6b4ba48753b9	165	}
shintamainjp	0:6b4ba48753b9	166	}
shintamainjp	0:6b4ba48753b9	167
shintamainjp	0:6b4ba48753b9	168	bool ConfigFile::remove(char *key) {
shintamainjp	0:6b4ba48753b9	169	if (key == NULL) {
shintamainjp	0:6b4ba48753b9	170	return false;
shintamainjp	0:6b4ba48753b9	171	}
shintamainjp	0:6b4ba48753b9	172	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	173	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	174	if (cfg != NULL) {
shintamainjp	0:6b4ba48753b9	175	if (strcmp(cfg->key, key) == 0) {
shintamainjp	0:6b4ba48753b9	176	free(cfg->key);
shintamainjp	0:6b4ba48753b9	177	free(cfg->value);
shintamainjp	0:6b4ba48753b9	178	free(cfg);
shintamainjp	0:6b4ba48753b9	179	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	180	return true;
shintamainjp	0:6b4ba48753b9	181	}
shintamainjp	0:6b4ba48753b9	182	}
shintamainjp	0:6b4ba48753b9	183	}
shintamainjp	0:6b4ba48753b9	184	return false;
shintamainjp	0:6b4ba48753b9	185	}
shintamainjp	0:6b4ba48753b9	186
shintamainjp	0:6b4ba48753b9	187	bool ConfigFile::removeAll(void) {
shintamainjp	0:6b4ba48753b9	188	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	189	config_t *p = configlist[i];
shintamainjp	0:6b4ba48753b9	190	if (p != NULL) {
shintamainjp	0:6b4ba48753b9	191	free(p->key);
shintamainjp	0:6b4ba48753b9	192	free(p->value);
shintamainjp	0:6b4ba48753b9	193	}
shintamainjp	0:6b4ba48753b9	194	free(p);
shintamainjp	0:6b4ba48753b9	195	configlist[i] = NULL;
shintamainjp	0:6b4ba48753b9	196	}
shintamainjp	0:6b4ba48753b9	197	return true;
shintamainjp	0:6b4ba48753b9	198	}
shintamainjp	0:6b4ba48753b9	199
shintamainjp	0:6b4ba48753b9	200	bool ConfigFile::read(char *file) {
shintamainjp	0:6b4ba48753b9	201	/*
shintamainjp	0:6b4ba48753b9	202	* Open the target file.
shintamainjp	0:6b4ba48753b9	203	*/
shintamainjp	0:6b4ba48753b9	204	FILE *fp = fopen(file, "r");
shintamainjp	0:6b4ba48753b9	205	if (fp == NULL) {
shintamainjp	0:6b4ba48753b9	206	return false;
shintamainjp	0:6b4ba48753b9	207	}
shintamainjp	0:6b4ba48753b9	208
shintamainjp	0:6b4ba48753b9	209	/*
shintamainjp	0:6b4ba48753b9	210	* Remove all configuration.
shintamainjp	0:6b4ba48753b9	211	*/
shintamainjp	0:6b4ba48753b9	212	removeAll();
shintamainjp	0:6b4ba48753b9	213
shintamainjp	0:6b4ba48753b9	214	/*
shintamainjp	0:6b4ba48753b9	215	* Read from a file.
shintamainjp	0:6b4ba48753b9	216	*/
shintamainjp	0:6b4ba48753b9	217	char buf[MAXLEN_KEY + 8 + MAXLEN_VALUE];
shintamainjp	0:6b4ba48753b9	218	while (fgets(buf, sizeof(buf), fp) != NULL) {
shintamainjp	0:6b4ba48753b9	219	/*
shintamainjp	0:6b4ba48753b9	220	* Ignore a comment.
shintamainjp	0:6b4ba48753b9	221	*/
shintamainjp	0:6b4ba48753b9	222	if (buf[0] == '#') {
shintamainjp	0:6b4ba48753b9	223	continue;
shintamainjp	0:6b4ba48753b9	224	}
shintamainjp	2:d8febae84a45	225
shintamainjp	0:6b4ba48753b9	226	/*
shintamainjp	0:6b4ba48753b9	227	* Trim a return.
shintamainjp	0:6b4ba48753b9	228	*/
shintamainjp	0:6b4ba48753b9	229	const size_t len = strlen(buf);
shintamainjp	0:6b4ba48753b9	230	for (int i = 0; i < len; i++) {
shintamainjp	0:6b4ba48753b9	231	if ((buf[i] == '\r') \|\| (buf[i] == '\n')) {
shintamainjp	0:6b4ba48753b9	232	buf[i] = '\0';
shintamainjp	0:6b4ba48753b9	233	}
shintamainjp	0:6b4ba48753b9	234	}
shintamainjp	0:6b4ba48753b9	235
shintamainjp	0:6b4ba48753b9	236	/*
shintamainjp	0:6b4ba48753b9	237	* Separate key and value.
shintamainjp	2:d8febae84a45	238	*/
shintamainjp	0:6b4ba48753b9	239	char k[MAXLEN_KEY];
shintamainjp	0:6b4ba48753b9	240	char v[MAXLEN_VALUE];
shintamainjp	0:6b4ba48753b9	241	char *sp = strchr(buf, SEPARATOR);
shintamainjp	0:6b4ba48753b9	242	if (sp != NULL) {
shintamainjp	0:6b4ba48753b9	243	strcpy(v, sp + 1);
shintamainjp	0:6b4ba48753b9	244	*sp = '\0';
shintamainjp	0:6b4ba48753b9	245	strcpy(k, buf);
shintamainjp	0:6b4ba48753b9	246	setValue(k, v);
shintamainjp	0:6b4ba48753b9	247	}
shintamainjp	0:6b4ba48753b9	248	}
shintamainjp	0:6b4ba48753b9	249	fclose(fp);
shintamainjp	0:6b4ba48753b9	250	return true;
shintamainjp	0:6b4ba48753b9	251	}
shintamainjp	0:6b4ba48753b9	252
shintamainjp	4:940510a29b44	253	bool ConfigFile::write(char file, char header, FileFormat ff) {
shintamainjp	2:d8febae84a45	254	/*
shintamainjp	2:d8febae84a45	255	* Open the target file.
shintamainjp	2:d8febae84a45	256	*/
shintamainjp	0:6b4ba48753b9	257	FILE *fp = fopen(file, "w");
shintamainjp	0:6b4ba48753b9	258	if (fp == NULL) {
shintamainjp	0:6b4ba48753b9	259	return false;
shintamainjp	0:6b4ba48753b9	260	}
shintamainjp	0:6b4ba48753b9	261
shintamainjp	2:d8febae84a45	262	/*
shintamainjp	2:d8febae84a45	263	* Set a type of new line.
shintamainjp	2:d8febae84a45	264	*/
shintamainjp	2:d8febae84a45	265	char *newline = NEWLINE_UNIX;
shintamainjp	2:d8febae84a45	266	switch (ff) {
shintamainjp	2:d8febae84a45	267	case UNIX:
shintamainjp	2:d8febae84a45	268	newline = NEWLINE_UNIX;
shintamainjp	2:d8febae84a45	269	break;
shintamainjp	2:d8febae84a45	270	case MAC:
shintamainjp	2:d8febae84a45	271	newline = NEWLINE_MAC;
shintamainjp	2:d8febae84a45	272	break;
shintamainjp	2:d8febae84a45	273	case DOS:
shintamainjp	2:d8febae84a45	274	newline = NEWLINE_DOS;
shintamainjp	2:d8febae84a45	275	break;
shintamainjp	2:d8febae84a45	276	default:
shintamainjp	2:d8febae84a45	277	newline = NEWLINE_UNIX;
shintamainjp	2:d8febae84a45	278	break;
shintamainjp	2:d8febae84a45	279	}
shintamainjp	2:d8febae84a45	280
shintamainjp	2:d8febae84a45	281	/*
shintamainjp	4:940510a29b44	282	* Write the header.
shintamainjp	4:940510a29b44	283	*/
shintamainjp	4:940510a29b44	284	if (header != NULL) {
shintamainjp	4:940510a29b44	285	fprintf(fp, "%s%s", header, newline);
shintamainjp	4:940510a29b44	286	}
shintamainjp	4:940510a29b44	287
shintamainjp	4:940510a29b44	288	/*
shintamainjp	2:d8febae84a45	289	* Write the data.
shintamainjp	2:d8febae84a45	290	*/
shintamainjp	0:6b4ba48753b9	291	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	292	config_t *cfg = configlist[i];
shintamainjp	0:6b4ba48753b9	293	if (cfg != NULL) {
shintamainjp	2:d8febae84a45	294	fprintf(fp, "%s=%s%s", cfg->key, cfg->value, newline);
shintamainjp	0:6b4ba48753b9	295	}
shintamainjp	0:6b4ba48753b9	296	}
shintamainjp	0:6b4ba48753b9	297	fclose(fp);
shintamainjp	0:6b4ba48753b9	298	return true;
shintamainjp	0:6b4ba48753b9	299	}
shintamainjp	0:6b4ba48753b9	300
shintamainjp	0:6b4ba48753b9	301	ConfigFile::config_t ConfigFile::search(char key) {
shintamainjp	0:6b4ba48753b9	302	if (key == NULL) {
shintamainjp	0:6b4ba48753b9	303	return NULL;
shintamainjp	0:6b4ba48753b9	304	}
shintamainjp	0:6b4ba48753b9	305	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	306	if (configlist[i] != NULL) {
shintamainjp	0:6b4ba48753b9	307	if (strcmp(configlist[i]->key, key) == 0) {
shintamainjp	0:6b4ba48753b9	308	return configlist[i];
shintamainjp	0:6b4ba48753b9	309	}
shintamainjp	0:6b4ba48753b9	310	}
shintamainjp	0:6b4ba48753b9	311	}
shintamainjp	0:6b4ba48753b9	312	return NULL;
shintamainjp	0:6b4ba48753b9	313	}
shintamainjp	0:6b4ba48753b9	314
shintamainjp	0:6b4ba48753b9	315	bool ConfigFile::add(config_t *cfg) {
shintamainjp	0:6b4ba48753b9	316	for (int i = 0; i < MAXCONFIG; i++) {
shintamainjp	0:6b4ba48753b9	317	if (configlist[i] == NULL) {
shintamainjp	0:6b4ba48753b9	318	configlist[i] = cfg;
shintamainjp	0:6b4ba48753b9	319	return true;
shintamainjp	0:6b4ba48753b9	320	}
shintamainjp	0:6b4ba48753b9	321	}
shintamainjp	0:6b4ba48753b9	322	return false;
shintamainjp	0:6b4ba48753b9	323	}

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Type:	Library
Created:	01 Jul 2014
Imports:	2
Forks:	0
Commits:	8
Dependents:	2
Dependencies:	0
Followers:	3

ConfigFile.cpp@4:940510a29b44, 2010-09-12 (annotated)

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