option_list.c
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "option_list.h"
#include "utils.h"
list *read_data_cfg(char *filename)
{
FILE *file = fopen(filename, "r");
if(file == 0) file_error(filename);
char *line;
int nu = 0;
list *options = make_list();
while((line=fgetl(file)) != 0){
++ nu;
strip(line);
switch(line[0]){
case '\0':
case '#':
case ';':
free(line);
break;
default:
if(!read_option(line, options)){
fprintf(stderr, "Config file error line %d, could parse: %s\n", nu, line);
free(line);
}
break;
}
}
fclose(file);
return options;
}
metadata get_metadata(char *file)
{
metadata m = {0};
list *options = read_data_cfg(file);
char *name_list = option_find_str(options, "names", 0);
if(!name_list) name_list = option_find_str(options, "labels", 0);
if(!name_list) {
fprintf(stderr, "No names or labels found\n");
} else {
m.names = get_labels(name_list);
}
m.classes = option_find_int(options, "classes", 2);
free_list(options);
return m;
}
int read_option(char *s, list *options)
{
size_t i;
size_t len = strlen(s);
char *val = 0;
for(i = 0; i < len; ++i){
if(s[i] == '='){
s[i] = '\0';
val = s+i+1;
break;
}
}
if(i == len-1) return 0;
char *key = s;
option_insert(options, key, val);
return 1;
}
void option_insert(list *l, char *key, char *val)
{
kvp *p = malloc(sizeof(kvp));
p->key = key;
p->val = val;
p->used = 0;
list_insert(l, p);
}
void option_unused(list *l)
{
node *n = l->front;
while(n){
kvp *p = (kvp *)n->val;
if(!p->used){
fprintf(stderr, "Unused field: '%s = %s'\n", p->key, p->val);
}
n = n->next;
}
}
char *option_find(list *l, char *key)
{
node *n = l->front;
while(n){
kvp *p = (kvp *)n->val;
if(strcmp(p->key, key) == 0){
p->used = 1;
return p->val;
}
n = n->next;
}
return 0;
}
char *option_find_str(list *l, char *key, char *def)
{
char *v = option_find(l, key);
if(v) return v;
if(def) fprintf(stderr, "%s: Using default '%s'\n", key, def);
return def;
}
int option_find_int(list *l, char *key, int def)
{
char *v = option_find(l, key);
if(v) return atoi(v);
fprintf(stderr, "%s: Using default '%d'\n", key, def);
return def;
}
int option_find_int_quiet(list *l, char *key, int def)
{
char *v = option_find(l, key);
if(v) return atoi(v);
return def;
}
float option_find_float_quiet(list *l, char *key, float def)
{
char *v = option_find(l, key);
if(v) return atof(v);
return def;
}
float option_find_float(list *l, char *key, float def)
{
char *v = option_find(l, key);
if(v) return atof(v);
fprintf(stderr, "%s: Using default '%lf'\n", key, def);
return def;
}