#ifndef HEADER_STACK_H
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#define HEADER_STACK_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct stack_st {
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int num;
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char **data;
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int sorted;
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int num_alloc;
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int (*comp)(const char *const *, const char *const *);
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} STACK;
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#define M_sk_num(sk) ((sk) ? (sk)->num : -1)
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#define M_sk_value(sk, n) ((sk) ? (sk)->data[n] : NULL)
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int sk_num(const STACK *);
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char *sk_value(const STACK *, int);
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char *sk_set(STACK *, int, char *);
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STACK *sk_new(int (*cmp)(const char *const *, const char *const *));
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STACK *sk_new_null(void);
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void sk_free(STACK *);
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void sk_pop_free(STACK *st, void (*func)(void *));
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int sk_insert(STACK *sk, char *data, int where);
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char *sk_delete(STACK *st, int loc);
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char *sk_delete_ptr(STACK *st, char *p);
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int sk_find(STACK *st, char *data);
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int sk_find_ex(STACK *st, char *data);
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int sk_push(STACK *st, char *data);
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int sk_unshift(STACK *st, char *data);
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char *sk_shift(STACK *st);
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char *sk_pop(STACK *st);
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void sk_zero(STACK *st);
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int (*sk_set_cmp_func(STACK *sk,
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int (*c)(const char *const *,
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const char *const *)))(const char *const *,
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const char *const *);
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STACK *sk_dup(STACK *st);
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void sk_sort(STACK *st);
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int sk_is_sorted(const STACK *st);
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#ifdef __cplusplus
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}
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#endif
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#endif
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