/* SPDX-License-Identifier: GPL-2.0+ *//* utils.h * originally written by: Kirk Reiser. * ** Copyright (C) 2002  Kirk Reiser. *  Copyright (C) 2003  David Borowski. */ #include <stdio.h> #define MAXKEYS 512#define MAXKEYVAL 160#define HASHSIZE 101#define is_shift -3#define is_spk -2#define is_input -1 struct st_key {	char *name;	struct st_key *next;	int value, shift;}; struct st_key key_table[MAXKEYS];struct st_key *extra_keys = key_table+HASHSIZE;char *def_name, *def_val;FILE *infile;int lc; char filename[256]; static inline void open_input(const char *dir_name, const char *name){	if (dir_name)		snprintf(filename, sizeof(filename), "%s/%s", dir_name, name);	else		snprintf(filename, sizeof(filename), "%s", name);	infile = fopen(filename, "r");	if (!infile) {		fprintf(stderr, "can't open %s\n", filename);		exit(1);	}	lc = 0;} static inline int oops(const char *msg, const char *info){	if (info == NULL)		info = "";	fprintf(stderr, "error: file %s line %d\n", filename, lc);	fprintf(stderr, "%s %s\n", msg, info);	exit(1);} static inline struct st_key *hash_name(char *name){	unsigned char *pn = (unsigned char *)name;	int hash = 0; 	while (*pn) {		hash = (hash * 17) & 0xfffffff;		if (isupper(*pn))			*pn = tolower(*pn);		hash += (int)*pn;		pn++;	}	hash %= HASHSIZE;	return &key_table[hash];} static inline struct st_key *find_key(char *name){	struct st_key *this = hash_name(name); 	while (this) {		if (this->name && !strcmp(name, this->name))			return this;		this = this->next;	}	return this;} static inline struct st_key *add_key(char *name, int value, int shift){	struct st_key *this = hash_name(name); 	if (extra_keys-key_table >= MAXKEYS)		oops("out of key table space, enlarge MAXKEYS", NULL);	if (this->name != NULL) {		while (this->next) {			if (!strcmp(name, this->name))				oops("attempt to add duplicate key", name);			this = this->next;		}		this->next = extra_keys++;		this = this->next;	}	this->name = strdup(name);	this->value = value;	this->shift = shift;	return this;}