// By Marc Olivier Chouinard <mochouinard@m0c.com>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#define AST_MAX_EXTENSION 200

struct ast_params {
	char name;
	char *value;
	struct ast_params *next;

};
struct ast_params *ast_parseopts(char *data);
struct ast_params *ast_parseoptsadd(struct ast_params *params,char name,char *value);
char *ast_getparamvalue(struct ast_params *params,char name);
int ast_getparam(struct ast_params *params,char name);

int main(void) {
	struct ast_params *params;

	params = ast_parseopts("abcM(big\\)path)def\0");

	if (!ast_getparam(params,'z'))
		printf("It dont exist\n");
	if (ast_getparam(params,'M'))
		printf("M has this value '%s'\n",ast_getparamvalue(params,'M'));
	
}
char *ast_getparamvalue(struct ast_params *params,char name) {
        struct ast_params *tmp;
        tmp = params;
        while(tmp){
                if (tmp->name == name)
                        return tmp->value;
                tmp = tmp->next;
        }
        return NULL;
}
int ast_getparam(struct ast_params *params,char name) {
	struct ast_params *tmp;
	tmp = params;
        while(tmp){
		if (tmp->name == name)
			return 1;
                tmp = tmp->next;
        }
	return 0;
}
struct ast_params *ast_parseoptsadd(struct ast_params *params,char name,char *value) {
	struct ast_params *tmp;

	tmp = malloc(sizeof(struct ast_params*));
	if (params == NULL) {
		tmp->next = NULL;
	} else {
		tmp->next = params;
	}
	tmp->name = name;
	tmp->value = value;
	
	return tmp;
}
struct ast_params *ast_parseopts(char *data) {
	struct ast_params *params=NULL;
	char *tmp;
	char c;
	char *at;
	char *cur;
	int open=0;
	int cnt;
	

	at = data;
	
	while (*at) {
		if (open == 0 && *(at+1) && *(at+1) == '(') {
			c = *at;
			*(at++);
			open = 1;
			cnt=0;
			cur = at+1;	
		
		}
		if (open == 0) {
			c = *at;
			params = ast_parseoptsadd(params,c,NULL);
		}
		if (open == 1 && *at == ')' && *(at-1) != '\\') {
			tmp = malloc(cnt - 1 + sizeof(char *));
			memset(tmp,0,sizeof(tmp));
			strncpy(tmp, cur, cnt-1);
			params = ast_parseoptsadd(params,c,tmp);
			open = 0;
		}
		if (open == 1)
			cnt++;	
				
		*(at++);
	}
	return params;
}