conf.c

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			if (strcmp(section,"ENV") == 0)
				{
				p=Getenv(name);
				if (p != NULL) return(p);
				}
			}
		vv.section="default";
		vv.name=name;
		v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
		if (v != NULL)
			return(v->value);
		else
			return(NULL);
		}
	else
		return(Getenv(name));
	}

static CONF_VALUE *get_section(conf,section)
LHASH *conf;
char *section;
	{
	CONF_VALUE *v,vv;

	if ((conf == NULL) || (section == NULL)) return(NULL);
	vv.name=NULL;
	vv.section=section;
	v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
	return(v);
	}

STACK *CONF_get_section(conf,section)
LHASH *conf;
char *section;
	{
	CONF_VALUE *v;

	v=get_section(conf,section);
	if (v != NULL)
		return((STACK *)v->value);
	else
		return(NULL);
	}

long CONF_get_number(conf,section,name)
LHASH *conf;
char *section;
char *name;
	{
	char *str;
	long ret=0;

	str=CONF_get_string(conf,section,name);
	if (str == NULL) return(0);
	for (;;)
		{
		if (IS_NUMER(*str))
			ret=ret*10+(*str -'0');
		else
			return(ret);
		str++;
		}
	}

void CONF_free(conf)
LHASH *conf;
	{
	if (conf == NULL) return;

	conf->down_load=0; 	/* evil thing to make sure the 'Free()'
				 * works as expected */
	lh_doall_arg(conf,(void (*)())value_free_hash,(char *)conf);

	/* We now have only 'section' entries in the hash table.
	 * Due to problems with */

	lh_doall_arg(conf,(void (*)())value_free_stack,(char *)conf);
	lh_free(conf);
	}

static void value_free_hash(a,conf)
CONF_VALUE *a;
LHASH *conf;
	{
	if (a->name != NULL)
		{
		a=(CONF_VALUE *)lh_delete(conf,(char *)a);
		}
	}

static void value_free_stack(a,conf)
CONF_VALUE *a;
LHASH *conf;
	{
	CONF_VALUE *vv;
	STACK *sk;
	int i;

	if (a->name != NULL) return;

	sk=(STACK *)a->value;
	for (i=sk_num(sk)-1; i>=0; i--)
		{
		vv=(CONF_VALUE *)sk_value(sk,i);
		Free(vv->value);
		Free(vv->name);
		Free(vv);
		}
	if (sk != NULL) sk_free(sk);
	Free(a->section);
	Free(a);
	}

static void clear_comments(p)
char *p;
	{
	char *to;

	to=p;
	for (;;)
		{
		if (IS_COMMENT(*p))
			{
			*p='\0';
			return;
			}
		if (IS_QUOTE(*p))
			{
			p=scan_quote(p);
			continue;
			}
		if (IS_ESC(*p))
			{
			p=scan_esc(p);
			continue;
			}
		if (IS_EOF(*p))
			return;
		else
			p++;
		}
	}

static int str_copy(conf,section,pto,from)
LHASH *conf;
char *section;
char **pto,*from;
	{
	int q,r,rr=0,to=0,len=0;
	char *s,*e,*rp,*p,*rrp,*np,*cp,v;
	BUF_MEM *buf;

	if ((buf=BUF_MEM_new()) == NULL) return(0);

	len=strlen(from)+1;
	if (!BUF_MEM_grow(buf,len)) goto err;

	for (;;)
		{
		if (IS_QUOTE(*from))
			{
			q= *from;
			from++;
			while ((*from != '\0') && (*from != q))
				{
				if (*from == '\\')
					{
					from++;
					if (*from == '\0') break;
					}
				buf->data[to++]= *(from++);
				}
			}
		else if (*from == '\\')
			{
			from++;
			v= *(from++);
			if (v == '\0') break;
			else if (v == 'r') v='\r';
			else if (v == 'n') v='\n';
			else if (v == 'b') v='\b';
			else if (v == 't') v='\t';
			buf->data[to++]= v;
			}
		else if (*from == '\0')
			break;
		else if (*from == '$')
			{
			/* try to expand it */
			rrp=NULL;
			s= &(from[1]);
			if (*s == '{')
				q='}';
			else if (*s == '(')
				q=')';
			else q=0;

			if (q) s++;
			cp=section;
			e=np=s;
			while (IS_ALPHA_NUMERIC(*e))
				e++;
			if ((e[0] == ':') && (e[1] == ':'))
				{
				cp=np;
				rrp=e;
				rr= *e;
				*rrp='\0';
				e+=2;
				np=e;
				while (IS_ALPHA_NUMERIC(*e))
					e++;
				}
			r= *e;
			*e='\0';
			rp=e;
			if (q)
				{
				if (r != q)
					{
					CONFerr(CONF_F_STR_COPY,CONF_R_NO_CLOSE_BRACE);
					goto err;
					}
				e++;
				}
			/* So at this point we have
			 * ns which is the start of the name string which is
			 *   '\0' terminated. 
			 * cs which is the start of the section string which is
			 *   '\0' terminated.
			 * e is the 'next point after'.
			 * r and s are the chars replaced by the '\0'
			 * rp and sp is where 'r' and 's' came from.
			 */
			p=CONF_get_string(conf,cp,np);
			if (rrp != NULL) *rrp=rr;
			*rp=r;
			if (p == NULL)
				{
				CONFerr(CONF_F_STR_COPY,CONF_R_VARIABLE_HAS_NO_VALUE);
				goto err;
				}
			BUF_MEM_grow(buf,(strlen(p)+len-(e-from)));
			while (*p)
				buf->data[to++]= *(p++);
			from=e;
			}
		else
			buf->data[to++]= *(from++);
		}
	buf->data[to]='\0';
	if (*pto != NULL) Free(*pto);
	*pto=buf->data;
	Free(buf);
	return(1);
err:
	if (buf != NULL) BUF_MEM_free(buf);
	return(0);
	}

static char *eat_ws(p)
char *p;
	{
	while (IS_WS(*p) && (!IS_EOF(*p)))
		p++;
	return(p);
	}

static char *eat_alpha_numeric(p)
char *p;
	{
	for (;;)
		{
		if (IS_ESC(*p))
			{
			p=scan_esc(p);
			continue;
			}
		if (!IS_ALPHA_NUMERIC_PUNCT(*p))
			return(p);
		p++;
		}
	}

static unsigned long hash(v)
CONF_VALUE *v;
	{
	return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
	}

static int cmp(a,b)
CONF_VALUE *a,*b;
	{
	int i;

	if (a->section != b->section)
		{
		i=strcmp(a->section,b->section);
		if (i) return(i);
		}

	if ((a->name != NULL) && (b->name != NULL))
		{
		i=strcmp(a->name,b->name);
		return(i);
		}
	else if (a->name == b->name)
		return(0);
	else
		return((a->name == NULL)?-1:1);
	}

static char *scan_quote(p)
char *p;
	{
	int q= *p;

	p++;
	while (!(IS_EOF(*p)) && (*p != q))
		{
		if (IS_ESC(*p))
			{
			p++;
			if (IS_EOF(*p)) return(p);
			}
		p++;
		}
	if (*p == q) p++;
	return(p);
	}

static CONF_VALUE *new_section(conf,section)
LHASH *conf;
char *section;
	{
	STACK *sk=NULL;
	int ok=0,i;
	CONF_VALUE *v=NULL,*vv;

	if ((sk=sk_new_null()) == NULL)
		goto err;
	if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
		goto err;
	i=strlen(section)+1;
	if ((v->section=(char *)Malloc(i)) == NULL)
		goto err;

	memcpy(v->section,section,i);
	v->name=NULL;
	v->value=(char *)sk;
	
	vv=(CONF_VALUE *)lh_insert(conf,(char *)v);
	if (vv != NULL)
		{
#if !defined(NO_STDIO) && !defined(WIN16)
		fprintf(stderr,"internal fault\n");
#endif
		abort();
		}
	ok=1;
err:
	if (!ok)
		{
		if (sk != NULL) sk_free(sk);
		if (v != NULL) Free(v);
		v=NULL;
		}
	return(v);
	}