chickenshell/main.h

#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>

#ifndef MAINH
#define MAINH

#define INITIAL_LINE_BUFFER 80
#define INITIAL_WORD_SIZE 80
#define INITIAL_NUM_ALIASES 50
#define INITIAL_NUM_VARIABLES 200 

// the minimum size of an array, the automaic array allocator will not make 
// arrays smaller than this
#define MIN_ARRAY_SIZE 50

#define NUM_BUILTINS 3

struct Alias {
    char *name;
    char *substitution;
};

struct ArrayElement {
    void *value;
    char *key;
};

typedef struct ArrayElement ArrayElement;

struct GrowingArray {
    struct ArrayElement *inner;
    int elements;
    int space;
};

typedef struct GrowingArray GrowingArray; 

struct State {
    struct Alias* aliases;
    struct GrowingArray variables;
    int num_aliases;
    FILE* code;

    FILE* input;
    FILE* output;

    bool interactive;
    char *ps1;
};

typedef struct State State;
typedef struct Alias Alias;

#endif