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