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/****************** context.c ******************/
/****************** 1999.6.17 ******************/
#include <stdio.h>
#include <string.h>
#include "context.h"
#include "util.h"
AppContext::AppContext()
{
names = new List();
types = new List();
values = new List();
name_default = new List();
type_default = new List();
value_default = new List();
set_default_value("h_size","int",(void *)300);
set_default_value("v_size","int",(void *)200);
}
AppContext::~AppContext()
{
delete names;
delete types;
delete values;
delete name_default;
delete type_default;
delete value_default;
}
int AppContext::search_name(List * list,char * name)
{
int i,j;
j = list->get_size();
for (i = 0;i < j;i++)
if (!strcmp((char*)(list->get_item(i)),name)) break;
return (i<j)? i:-1;
}
int AppContext::set_value(char * _name, char * type, void * data)
{
int i;
if((i = search_name(name_default,_name)) != -1) {
if( !strcmp((char*)type_default->get_item(i),type)) {
if((i = search_name(names,_name)) != -1)
values->reset_item(i,data);
else{
values->add_item(data);
types->add_item(type);
names->add_item(_name);
}
}
else {
fprintf(stderr,"Warning: class AppContext: data type mismatch, "
" variable \"%s\" is a \"%s\" instead of \"%s\"\n",
name_default->get_item(i),type_default->get_item(i),type);
return 1;
}
}
else {
if((i = search_name(names,_name)) != -1)
values->reset_item(i,data);
else{
values->add_item(data);
types->add_item(type);
names->add_item(_name);
}
}
return 0;
}
void * AppContext::get_value(char * _name)
{
int i;
if((i = search_name(names,_name)) != -1)
return values->get_item(i);
else if ((i = search_name(name_default,_name)) != -1)
return value_default->get_item(i);
return 0;
}
char * AppContext::get_value_type(char * _name)
{
int i;
if((i = search_name(names,_name)) != -1)
return (char*)types->get_item(i);
else if ((i = search_name(name_default,_name)) != -1)
return (char*)type_default->get_item(i);
return NULL;
}
void AppContext::set_default_value(char * _name, char * type, void * data)
{
int i;
if((i = search_name(name_default,_name)) != -1) {
value_default->reset_item(i,data);
type_default->reset_item(i,type);
}
else{
name_default->add_item(_name);
type_default->add_item(type);
value_default->add_item(data);
}
}
void AppContext::restore_default(char * _name)
{
int i;
if((i = search_name(names,_name)) != -1) {
values->delete_item(i);
types->delete_item(i);
names->delete_item(i);
}
}
void AppContext::restore_all()
{
names->delete_all();
types->delete_all();
values->delete_all();
}
void AppContext::display_values()
{
int i,j;
printf("values:\n");
j = names->get_size();
for(i = 0; i<j;i++)
if(!strcmp((char*)types->get_item(i),"char*"))
printf("\"%s\" = \"%s\"\n",names->get_item(i),values->get_item(i));
else if(!strcmp((char*)types->get_item(i),"int"))
printf("\"%s\" = %d\n",names->get_item(i),values->get_item(i));
else
printf("\"%s\" = 0x%x\n",names->get_item(i),values->get_item(i));
printf("default values:\n");
j = name_default->get_size();
for(i = 0; i<j;i++)
if(!strcmp((char*)type_default->get_item(i),"char*"))
printf("\"%s\" = \"%s\"\n",name_default->get_item(i),value_default->get_item(i));
else if(!strcmp((char*)type_default->get_item(i),"int"))
printf("\"%s\" = %d\n",name_default->get_item(i),value_default->get_item(i));
else
printf("\"%s\" = 0x%x\n",name_default->get_item(i),value_default->get_item(i));
}
#define BUFFER_LENGTH 200
#define BEGIN 1
#define NAME 2
#define NAME_ESCAPE 4
#define VALUE 3
static int is_blank(char c) { return c==' ' || c==9;}
static int is_end(char c) { return c=='\n' || c == 0;}
static int is_number(char c) {return c<='9' && c>='0';}
static void * my_parser(char *a, char ** type)
{
char * b;
int n;
for(b = a; is_number(*b) && !is_blank(*b) && !is_end(*b);b++);
if(!(is_blank(*b)||is_end(*b))) {
for(;!is_blank(*b) && !is_end(*b);b++);
*b = '\0';
*type = "char*";
return (void*)my_strdup(a);
}
else {
*type = "int";
sscanf(a,"%d",&n);
return (void*) n;
}
}
void AppContext::load(FILE * fd)
{
int i,k;
long pos;
char *a,*b,*c,*name,*type;
void * value;
char buffer[BUFFER_LENGTH];
a = buffer;
pos = 0L;
for(k = 1;k;){
fseek(fd,pos,SEEK_SET);
i = fread(buffer,1,BUFFER_LENGTH-1,fd);
if (i == 0) break;
buffer[i] = '\0';
//printf(buffer);
b = strchr(buffer,(int)'\n');
if (b) {
pos += b - buffer +1;
*b = '\0';
}
else k = 0;
for(a = buffer;is_blank(*a) && !is_end(*a);a++);
if (*a == '#' || is_end(*a)) continue;
for(b = a;!is_blank(*b) && !is_end(*b) && *b != '=';b++);
if(is_end(*b)) continue;
c = strchr(b,(int)'=');
if(!c) continue;
c++;
for(;is_blank(*c) && !is_end(*c);c++);
if(is_end(*c)) continue;
*b = 0;
// printf("name = %s, value = %s",a,c);
name = my_strdup(a);
value = my_parser(c,&type);
set_value(name,type,value);
}
}
void AppContext::save(FILE * fp, char * header)
{
int i,j;
char * type;
if(header != NULL)
fprintf(fp,"#%s\n\n",header);
j = names->get_size();
for (i = 0;i<j;i++) {
type = (char*)types->get_item(i);
if (!strcmp(type,"char*"))
fprintf(fp,"%s = %s\n",names->get_item(i),values->get_item(i));
else if (!strcmp(type,"int"))
fprintf(fp,"%s = %d\n",names->get_item(i),values->get_item(i));
else fprintf(stderr,"class AppContext: save: type \"%s\" does not be supported yet.\n",type);
}
}
#undef BUFFER_LENGTH
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