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-rw-r--r--drivers/accessibility/speakup/utils.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/utils.h b/drivers/accessibility/speakup/utils.h
new file mode 100644
index 0000000000..4ce9a12f76
--- /dev/null
+++ b/drivers/accessibility/speakup/utils.h
@@ -0,0 +1,102 @@
+/* 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 == 0) {
+ 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;
+}