IniFileLib - Simple library of INI file parser.

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Simple library of INI file parser.

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IniFile.cpp@0:995403221573, 2010-11-16 (annotated)

Committer:: rinosh2
Date:: Tue Nov 16 16:34:45 2010 +0000
Revision:: 0:995403221573
Child:: 1:3601c7feb547

Who changed what in which revision?

User	Revision	Line number	New contents of line
rinosh2	0:995403221573	1	///////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	2	// IniFile: .ini file parser by rinos 2010
rinosh2	0:995403221573	3	///////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	4
rinosh2	0:995403221573	5	#include "IniFile.h"
rinosh2	0:995403221573	6	#include <string.h>
rinosh2	0:995403221573	7	#include <stdlib.h>
rinosh2	0:995403221573	8
rinosh2	0:995403221573	9	////////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	10	// defines
rinosh2	0:995403221573	11	const char INI_DELIM[] = " \t\r\n";
rinosh2	0:995403221573	12	const int INI_LINE_BUF= 256;
rinosh2	0:995403221573	13
rinosh2	0:995403221573	14	////////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	15	// IniFile
rinosh2	0:995403221573	16	IniFile::IniFile(const char* file): m_fp(0) {
rinosh2	0:995403221573	17	if(file) open(file);
rinosh2	0:995403221573	18	}
rinosh2	0:995403221573	19	IniFile::~IniFile(){
rinosh2	0:995403221573	20	close();
rinosh2	0:995403221573	21	}
rinosh2	0:995403221573	22
rinosh2	0:995403221573	23	////////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	24	// internal funcs
rinosh2	0:995403221573	25	IniFile::Status IniFile::strtrim(char* dst, const char* src, int dst_size){
rinosh2	0:995403221573	26	if(!dst_size) return S_BUFFER_TOO_SHORT; // myStrcpy needs more than 1 byte for '\0'.
rinosh2	0:995403221573	27
rinosh2	0:995403221573	28	// Find valid string area
rinosh2	0:995403221573	29	const char* p1 = strchr (src, '"');
rinosh2	0:995403221573	30	const char* p2 = p1? strrchr(++p1, '"') : 0;
rinosh2	0:995403221573	31	if(!p2){
rinosh2	0:995403221573	32	// trim space or tab
rinosh2	0:995403221573	33	for(p1 = src ; p1 && strchr(INI_DELIM, p1) ; p1++);
rinosh2	0:995403221573	34	if(!*p1){ // all char is space or tab
rinosh2	0:995403221573	35	*dst = 0;
rinosh2	0:995403221573	36	return S_SUCCESS;
rinosh2	0:995403221573	37	}
rinosh2	0:995403221573	38	for(p2 = p1 + strlen(p1) ; strchr(INI_DELIM, p2[-1]) ; --p2);
rinosh2	0:995403221573	39	}
rinosh2	0:995403221573	40
rinosh2	0:995403221573	41	// Check copy size
rinosh2	0:995403221573	42	Status ret;
rinosh2	0:995403221573	43	if(dst_size > p2 - p1){
rinosh2	0:995403221573	44	dst_size = p2 - p1;
rinosh2	0:995403221573	45	ret = S_SUCCESS;
rinosh2	0:995403221573	46	} else {
rinosh2	0:995403221573	47	dst_size--;
rinosh2	0:995403221573	48	ret = S_BUFFER_TOO_SHORT;
rinosh2	0:995403221573	49	}
rinosh2	0:995403221573	50
rinosh2	0:995403221573	51	// copy buffer
rinosh2	0:995403221573	52	if(dst != p1) memmove(dst, p1, dst_size);
rinosh2	0:995403221573	53	dst[dst_size] = 0;
rinosh2	0:995403221573	54	return ret;
rinosh2	0:995403221573	55	}
rinosh2	0:995403221573	56
rinosh2	0:995403221573	57	////////////////////////////////////////////////////////////////////////////////
rinosh2	0:995403221573	58	// Access methods
rinosh2	0:995403221573	59	IniFile::Status IniFile::open(const char* file){
rinosh2	0:995403221573	60	close();
rinosh2	0:995403221573	61	m_fp = fopen(file, "r");
rinosh2	0:995403221573	62	if(m_fp) return S_SUCCESS;
rinosh2	0:995403221573	63
rinosh2	0:995403221573	64	//printf("IniFile: Can't open %s\n", file);
rinosh2	0:995403221573	65	return S_OPEN_ERROR;
rinosh2	0:995403221573	66	}
rinosh2	0:995403221573	67
rinosh2	0:995403221573	68	IniFile::Status IniFile::close(){
rinosh2	0:995403221573	69	if(!m_fp) return S_NOT_OPENED;
rinosh2	0:995403221573	70
rinosh2	0:995403221573	71	fclose(m_fp);
rinosh2	0:995403221573	72	m_fp = 0;
rinosh2	0:995403221573	73	return S_SUCCESS;
rinosh2	0:995403221573	74	}
rinosh2	0:995403221573	75
rinosh2	0:995403221573	76	IniFile::Status IniFile::get(const char* key, char* ret, int ret_size){
rinosh2	0:995403221573	77	if(!m_fp) return S_OPEN_ERROR;
rinosh2	0:995403221573	78
rinosh2	0:995403221573	79	rewind(m_fp);
rinosh2	0:995403221573	80	char line[INI_LINE_BUF];
rinosh2	0:995403221573	81	while(fgets(line, sizeof(line), m_fp)){
rinosh2	0:995403221573	82	if(*line == '#') continue; // comment line
rinosh2	0:995403221573	83
rinosh2	0:995403221573	84	char* p = strchr(line, '=');
rinosh2	0:995403221573	85	if(!p \|\| line == p) continue; // invalid line
rinosh2	0:995403221573	86
rinosh2	0:995403221573	87	*p++ = 0;
rinosh2	0:995403221573	88	strtrim(line, line, p - line);
rinosh2	0:995403221573	89	if(strcmp(line, key)) continue; // different key
rinosh2	0:995403221573	90
rinosh2	0:995403221573	91	// check data type
rinosh2	0:995403221573	92	switch(ret_size){
rinosh2	0:995403221573	93	case DTYPE_INT:
rinosh2	0:995403221573	94	strtrim(line, p, INI_LINE_BUF);
rinosh2	0:995403221573	95	(int)ret = strtoul(line, &p, 0);
rinosh2	0:995403221573	96	//return p[0]? S_FORMAT_ERROR : S_SUCCESS; // check end
rinosh2	0:995403221573	97	return S_SUCCESS; // always success
rinosh2	0:995403221573	98
rinosh2	0:995403221573	99	case DTYPE_BOOL:
rinosh2	0:995403221573	100	strtrim(line, p, INI_LINE_BUF);
rinosh2	0:995403221573	101	switch(line[0]){
rinosh2	0:995403221573	102	case 'T':
rinosh2	0:995403221573	103	case 't': (bool)ret = true; break;
rinosh2	0:995403221573	104	case 'F':
rinosh2	0:995403221573	105	case 'f': (bool)ret = false; break;
rinosh2	0:995403221573	106	default: (bool)ret = strtoul(line, &p, 0)? true : false;
rinosh2	0:995403221573	107	}
rinosh2	0:995403221573	108	return S_SUCCESS;
rinosh2	0:995403221573	109
rinosh2	0:995403221573	110	default: // string
rinosh2	0:995403221573	111	return strtrim(ret, p, ret_size);
rinosh2	0:995403221573	112	}
rinosh2	0:995403221573	113	}
rinosh2	0:995403221573	114	return S_NO_KEY; // No key
rinosh2	0:995403221573	115	}
rinosh2	0:995403221573	116	IniFile::Status IniFile::get(const char* key, int& ret){
rinosh2	0:995403221573	117	return get(key, (char*)&ret, DTYPE_INT);
rinosh2	0:995403221573	118	}
rinosh2	0:995403221573	119	IniFile::Status IniFile::get(const char* key, bool& ret){
rinosh2	0:995403221573	120	return get(key, (char*)&ret, DTYPE_BOOL);
rinosh2	0:995403221573	121	}
rinosh2	0:995403221573	122
rinosh2	0:995403221573	123
rinosh2	0:995403221573	124	IniFile::Status IniFile::get(IniFile::IniList* inilist){
rinosh2	0:995403221573	125	Status ret = S_SUCCESS;
rinosh2	0:995403221573	126	for(; inilist->key ; ++inilist){
rinosh2	0:995403221573	127	Status sts = get(inilist->key, (char*)inilist->buf, inilist->typelen);
rinosh2	0:995403221573	128	switch(sts){
rinosh2	0:995403221573	129	case S_SUCCESS:
rinosh2	0:995403221573	130	break;
rinosh2	0:995403221573	131	case S_NO_KEY:
rinosh2	0:995403221573	132	ret = sts; // continue
rinosh2	0:995403221573	133	break;
rinosh2	0:995403221573	134	default:
rinosh2	0:995403221573	135	return sts; // fatal error
rinosh2	0:995403221573	136	}
rinosh2	0:995403221573	137	}
rinosh2	0:995403221573	138	return ret;
rinosh2	0:995403221573	139	}

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Type:	Library
Created:	16 Nov 2010
Imports:	127
Forks:	1
Commits:	3
Dependents:	4
Dependencies:	0
Followers:	7

IniFile.cpp@0:995403221573, 2010-11-16 (annotated)

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