/*
 * libbrlapi - A library providing access to braille terminals for applications.
 *
 * Copyright (C) 2006-2023 by Dave Mielke <dave@mielke.cc>
 *
 * libbrlapi comes with ABSOLUTELY NO WARRANTY.
 *
 * This is free software, placed under the terms of the
 * GNU Lesser General Public License, as published by the Free Software
 * Foundation; either version 2.1 of the License, or (at your option) any
 * later version. Please see the file LICENSE-LGPL for details.
 *
 * Web Page: http://brltty.app/
 *
 * This software is maintained by Dave Mielke <dave@mielke.cc>.
 */

#define BRLAPI_NO_SINGLE_SESSION
#include "prologue.h"
#include <brlapi.h>
#include <emacs-module.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>

int plugin_is_GPL_compatible;

static const char *error_name = "brlapi-error";
static const char *error_message = "BrlAPI Error";

static inline emacs_value
cons(emacs_env *env, emacs_value car, emacs_value cdr) {
  emacs_value args[] = { car, cdr };

  return env->funcall(env, env->intern(env, "cons"), ARRAY_COUNT(args), args);
}

static inline emacs_value
list(emacs_env *env, ptrdiff_t nargs, emacs_value *args) {
  return env->funcall(env, env->intern(env, "list"), nargs, args);
}

static void
error(emacs_env *env) {
  const char *const str = brlapi_strerror(&brlapi_error);
  emacs_value error_symbol = env->intern(env, error_name);
  emacs_value data[] = {
    env->make_string(env, str, strlen(str)),
    env->make_integer(env, brlapi_errno),
    env->make_integer(env, brlapi_libcerrno),
    env->make_integer(env, brlapi_gaierrno)
  };

  env->non_local_exit_signal(env,
    error_symbol, list(env, ARRAY_COUNT(data), data)
  );
}

static emacs_value
getLibraryVersion(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  int major, minor, revision;

  brlapi_getLibraryVersion(&major, &minor, &revision);

  {
    emacs_value data[] = {
      env->intern(env, ":major"), env->make_integer(env, major),
      env->intern(env, ":minor"), env->make_integer(env, minor),
      env->intern(env, ":revision"), env->make_integer(env, revision)
    };

    return list(env, ARRAY_COUNT(data), data);
  }
}

static char *
extract_string(emacs_env *env, ptrdiff_t nargs, ptrdiff_t arg, emacs_value *args) {
  if (arg < nargs) {
    if (env->is_not_nil(env, args[arg])) {
      ptrdiff_t size;
      if (env->copy_string_contents(env, args[arg], NULL, &size)) {
        char *string = malloc(size);

        if (env->copy_string_contents(env, args[arg], string, &size)) {
          return string;
        }
      }
    }
  }

  return NULL;
}

static emacs_value
openConnection(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = malloc(brlapi_getHandleSize());
  char *host = extract_string(env, nargs, 0, args);
  char *auth = extract_string(env, nargs, 1, args);
  const brlapi_connectionSettings_t desiredSettings = {
    .host = host, .auth = auth
  };
  brlapi_connectionSettings_t actualSettings;
  int result;

  if (env->non_local_exit_check(env) != emacs_funcall_exit_return) {
    if (handle) free(handle);
    if (host) free(host);
    if (auth) free(auth);
    return NULL;
  }

  result = brlapi__openConnection(handle, &desiredSettings, &actualSettings);

  if (host) free(host);
  if (auth) free(auth);
  
  if (result == -1) {
    error(env);
    free(handle);
    return NULL;
  }

  return env->make_user_ptr(env, free, handle);
}

static emacs_value
getString(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  int BRLAPI_STDCALL (*get) (brlapi_handle_t *, char *, size_t)
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    char name[BRLAPI_MAXNAMELENGTH + 1];
    size_t length = get(handle, name, sizeof(name));

    if (length != -1) {
      if (length > 0) length--;

      return env->make_string(env, name, length);
    }

    error(env);
  }

  return NULL;
}

static emacs_value
getDriverName(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return getString(env, nargs, args, data, brlapi__getDriverName);
}

static emacs_value
getModelIdentifier(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return getString(env, nargs, args, data, brlapi__getModelIdentifier);
}

static emacs_value
getDisplaySize(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    unsigned int x, y;

    if (brlapi__getDisplaySize(handle, &x, &y) != -1) {
      return cons(env, env->make_integer(env, x), env->make_integer(env, y));
    }

    error(env);
  }

  return NULL;
}

static char *
extract_driver(emacs_env *env, emacs_value arg) {
  ptrdiff_t size;

  if (env->copy_string_contents(env, arg, NULL, &size)) {
    char *driver = malloc(size);

    if (env->copy_string_contents(env, arg, driver, &size)) {
      return driver;
    }
  }

  return NULL;
}

static emacs_value
enterTtyMode(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);
  emacs_value result = NULL;

  if (handle) {
    int tty = nargs > 1 && env->is_not_nil(env, args[1])?
              env->extract_integer(env, args[1]): BRLAPI_TTY_DEFAULT;
    char *driver = nargs > 2? extract_driver(env, args[2]): NULL;

    if (env->non_local_exit_check(env) == emacs_funcall_exit_return) {
      tty = brlapi__enterTtyMode(handle, tty, driver);
    
      if (tty != -1) {
        result = env->make_integer(env, tty);
      } else {
        error(env);
      }
    }

    if (driver) free(driver);
  }

  return result;
}

static emacs_value
leaveTtyMode(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    if (brlapi__leaveTtyMode(handle) != -1) {
      return env->intern(env, "nil");
    }

    error(env);
  }

  return NULL;
}

static inline int
extract_cursor(emacs_env *env, emacs_value arg) {
  if (!env->is_not_nil(env, arg)) return BRLAPI_CURSOR_OFF;
  if (env->eq(env, arg, env->intern(env, "leave"))) return BRLAPI_CURSOR_LEAVE;
  return env->extract_integer(env, arg);
}

static emacs_value
writeText(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    ptrdiff_t size;

    if (env->copy_string_contents(env, args[1], NULL, &size)) {
      char text[size];

      if (env->copy_string_contents(env, args[1], text, &size)) {
        int cursor = nargs > 2? extract_cursor(env, args[2]): BRLAPI_CURSOR_OFF;

        if (env->non_local_exit_check(env) == emacs_funcall_exit_return) {
          if (brlapi__writeText(handle, cursor, text) != -1) {
            return env->intern(env, "nil");
          }

          error(env);
        }
      }
    }
  }

  return NULL;
}

static emacs_value
readKey(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);
  const int wait = nargs > 1? env->is_not_nil(env, args[1]): 0;
  brlapi_keyCode_t keyCode;
  int result;

  if (handle == NULL) return NULL;

  do {
    if (env->process_input(env) != emacs_process_input_continue)
      return NULL;

    result = brlapi__readKey(handle, wait, &keyCode);
  } while (result == -1 &&
           brlapi_errno == BRLAPI_ERROR_LIBCERR &&
           brlapi_libcerrno == EINTR);
  
  if (result == -1) {
    error(env);
    return NULL;
  }

  if (result == 0) return env->intern(env, "nil");

  return env->make_integer(env, (intmax_t)keyCode);
}

static emacs_value
readKeyWithTimeout(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);
  const int timeout_ms = env->extract_integer(env, args[1]);
  brlapi_keyCode_t keyCode;
  int result;

  do {
    if (env->process_input(env) != emacs_process_input_continue)
      return NULL;

    result = brlapi__readKeyWithTimeout(handle, timeout_ms, &keyCode);
  } while (result == -1 &&
           timeout_ms < 0 &&
           brlapi_errno == BRLAPI_ERROR_LIBCERR &&
           brlapi_libcerrno == EINTR);
  
  if (result == -1) {
    error(env);
    return NULL;
  }

  if (result == 0) return env->intern(env, "nil");

  return env->make_integer(env, (intmax_t)keyCode);
}

static inline brlapi_keyCode_t
extract_keyCode(emacs_env *env, emacs_value value) {
  return (brlapi_keyCode_t)env->extract_integer(env, value);
}

static const ptrdiff_t changeKeysMinArity = 2;

static emacs_value
changeKeys (
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  int BRLAPI_STDCALL (*change) (
    brlapi_handle_t *, brlapi_rangeType_t, const brlapi_keyCode_t[], unsigned int
  )
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    static const char *rangeNames[] = {
      "all", "code", "command", "key", "type", NULL
    };
    static const brlapi_rangeType_t rangeTypes[] = {
      brlapi_rangeType_all,
      brlapi_rangeType_code,
      brlapi_rangeType_command,
      brlapi_rangeType_key,
      brlapi_rangeType_type
    };
    size_t rangeIndex = 0;

    while (rangeNames[rangeIndex]) {
      if (env->eq(env, args[1], env->intern(env, rangeNames[rangeIndex]))) {
        break;
      }
      rangeIndex++;
    }

    if (rangeNames[rangeIndex]) {
      const brlapi_rangeType_t range = rangeTypes[rangeIndex];

      if (range == brlapi_rangeType_all) {
        if (change(handle, range, NULL, 0) != -1) {
          return env->intern(env, "nil");
        }

        error(env);
      } else {
        brlapi_keyCode_t keys[nargs - changeKeysMinArity];

        for (ptrdiff_t index = 0; index < ARRAY_COUNT(keys); index++) {
          keys[index] = extract_keyCode(env, args[changeKeysMinArity + index]);

          if (env->non_local_exit_check(env) != emacs_funcall_exit_return)
            return NULL;
        }

        if (change(handle, range, keys, ARRAY_COUNT(keys)) != -1) {
          return env->intern(env, "nil");
        }

        error(env);
      }

      return NULL;
    }

    { /* (signal 'wrong-type-argument (list 'symbolp arg)) */
      emacs_value data[] = {
        env->intern(env, "symbolp"), args[1]
      };

      env->non_local_exit_signal(env,
        env->intern(env, "wrong-type-argument"),
        list(env, ARRAY_COUNT(data), data)
      );
    }
  }

  return NULL;
}

static emacs_value
acceptKeys(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return changeKeys(env, nargs, args, data, brlapi__acceptKeys);
}

static emacs_value
ignoreKeys(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return changeKeys(env, nargs, args, data, brlapi__ignoreKeys);
}

static emacs_value
describeKeyCode(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  const brlapi_keyCode_t keyCode = extract_keyCode(env, args[0]);

  if (env->non_local_exit_check(env) == emacs_funcall_exit_return) {
    brlapi_describedKeyCode_t description;

    if (brlapi_describeKeyCode(keyCode, &description) != -1) {
      static const size_t min_len = 3;
      emacs_value data[min_len + description.flags];
      
      data[0] = env->intern(env, description.type);
      data[1] = env->intern(env, description.command);
      data[2] = env->make_integer(env, description.argument);
      for (size_t index = 0; index < description.flags; index += 1) {
        data[min_len+index] = env->intern(env, description.flag[index]);
      }

      return list(env, ARRAY_COUNT(data), data);
    }

    error(env);
  }

  return NULL;
}

static emacs_value
getStringParameter(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  brlapi_param_t param
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    static const brlapi_param_flags_t flags = BRLAPI_PARAMF_GLOBAL;
    size_t count;
    char *string = brlapi__getParameterAlloc(handle, param, 0, flags, &count);

    if (string) {
      emacs_value result = env->make_string(env, string, count);

      free(string);

      return result;
    }

    error(env);
  }

  return NULL;
}

static emacs_value
setStringParameter(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  brlapi_param_t param
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    ptrdiff_t length;
    
    if (env->copy_string_contents(env, args[1], NULL, &length)) {
      char string[length];
      
      if (env->copy_string_contents(env, args[1], string, &length)) {
        static const brlapi_param_flags_t flags = BRLAPI_PARAMF_GLOBAL;

        if (brlapi__setParameter(handle, param, 0, flags, string, length) != -1) {
          return env->intern(env, "nil");
        }

        error(env);
      }
    }
  }

  return NULL;
}

static emacs_value
getDriverCode(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_DRIVER_CODE);
}

static emacs_value
getDriverVersion(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_DRIVER_VERSION);
}

static emacs_value
getClipboardContent(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_CLIPBOARD_CONTENT);
}

static emacs_value
setClipboardContent(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return setStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_CLIPBOARD_CONTENT);
}

static emacs_value
getComputerBrailleTable(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_COMPUTER_BRAILLE_TABLE);
}

static emacs_value
setComputerBrailleTable(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return setStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_COMPUTER_BRAILLE_TABLE);
}

static emacs_value
getLiteraryBrailleTable(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_LITERARY_BRAILLE_TABLE);
}

static emacs_value
setLiteraryBrailleTable(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return setStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_LITERARY_BRAILLE_TABLE);
}

static emacs_value
getMessageLocae(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_MESSAGE_LOCALE);
}

static emacs_value
setMessageLocale(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return setStringParameter(env, nargs, args, data,
                            BRLAPI_PARAM_MESSAGE_LOCALE);
}

static emacs_value
getKeycodes(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  brlapi_param_t param
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    static const brlapi_param_flags_t flags = BRLAPI_PARAMF_GLOBAL;
    size_t count;
    brlapi_keyCode_t *codes = brlapi__getParameterAlloc(
      handle, param, 0, flags, &count
    );

    if (codes != NULL) {
      count /= sizeof(brlapi_keyCode_t);

      {
        emacs_value data[count];
        for (size_t i = 0; i < count; i += 1) {
          data[i] = env->make_integer(env, (intmax_t)codes[i]);
        }
        free(codes);

        return list(env, ARRAY_COUNT(data), data);
      }
    }

    error(env);
  }

  return NULL;
}

static emacs_value
getBoundCommandKeycodes(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodes(env, nargs, args, data,
    BRLAPI_PARAM_BOUND_COMMAND_KEYCODES
  );
}

static emacs_value
getDefinedDriverKeycodes(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodes(env, nargs, args, data,
    BRLAPI_PARAM_DEFINED_DRIVER_KEYCODES
  );
}

static emacs_value
getKeycodeName(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  brlapi_param_t param
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    brlapi_keyCode_t keyCode = extract_keyCode(env, args[1]);

    if (env->non_local_exit_check(env) == emacs_funcall_exit_return) {
      char *name = brlapi__getParameterAlloc(handle,
        param, keyCode, BRLAPI_PARAMF_GLOBAL, NULL
      );
      
      if (name) {
        emacs_value result = env->intern(env, name);

        free(name);
        
        return result;
      }

      error(env);
    }
  }
  
  return NULL;
}

static emacs_value
getCommandKeycodeName(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodeName(env, nargs, args, data,
    BRLAPI_PARAM_COMMAND_KEYCODE_NAME
  );
}

static emacs_value
getDriverKeycodeName(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodeName(env, nargs, args, data,
    BRLAPI_PARAM_DRIVER_KEYCODE_NAME
  );
}

static emacs_value
getKeycodeSummary(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data,
  brlapi_param_t param
) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    brlapi_keyCode_t keyCode = extract_keyCode(env, args[1]);

    if (env->non_local_exit_check(env) == emacs_funcall_exit_return) {
      size_t count;
      char *summary = brlapi__getParameterAlloc(handle,
        param, keyCode, BRLAPI_PARAMF_GLOBAL, &count
      );
      
      if (summary) {
        emacs_value result = env->make_string(env, summary, count);

        free(summary);
        
        return result;
      }

      error(env);
    }
  }
  
  return NULL;
}

static emacs_value
getCommandKeycodeSummary(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodeSummary(env, nargs, args, data,
    BRLAPI_PARAM_COMMAND_KEYCODE_SUMMARY
  );
}

static emacs_value
getDriverKeycodeSummary(
  emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data
) {
  return getKeycodeSummary(env, nargs, args, data,
    BRLAPI_PARAM_DRIVER_KEYCODE_SUMMARY
  );
}

static emacs_value
closeConnection(emacs_env *env, ptrdiff_t nargs, emacs_value *args, void *data) {
  brlapi_handle_t *const handle = env->get_user_ptr(env, args[0]);

  if (handle) {
    brlapi__closeConnection(handle);

    return env->intern(env, "nil");
  }

  return NULL;
}

int
emacs_module_init(struct emacs_runtime *runtime) {
  emacs_env *const env = runtime->get_environment(runtime);

  if (runtime->size < sizeof(*runtime)) return 1;
  if (env->size < sizeof(*env)) return 2;

  { /* (define-error 'brlapi-error "BrlAPI Error") */
    emacs_value args[] = {
      env->intern(env, error_name),
      env->make_string(env, error_message, strlen(error_message))
    };

    env->funcall(env, env->intern(env, "define-error"), ARRAY_COUNT(args), args);
  }

#define register_function(func, minargs, maxargs, name, doc)                  \
  {                                                                           \
    emacs_value args[] = {                                                    \
      env->intern(env, "brlapi-" name),                                       \
      env->make_function(env, minargs, maxargs, func, doc, NULL)              \
    };                                                                        \
    env->funcall(env, env->intern(env, "defalias"), ARRAY_COUNT(args), args); \
  }

  register_function(getLibraryVersion, 0, 0, "get-library-version",
    "Get the version of BrlAPI."
  )
  register_function(openConnection, 0, 2, "open-connection",
    "Open a new connection to BRLTTY."
    "\n\nHOST is a string of the form \"host:0\" where the number after the colon"
    "\nspecifies the instance of BRLTTY on the given host."
    "\n\nIf AUTH is non-nil, specifies the path to the secret key."
    "\n\nAlso see `brlapi-close-connection'."
    "\n\n(fn &optional HOST AUTH)"
  )
  register_function(getDriverName, 1, 1, "get-driver-name",
    "Get the complete name of the driver used by BRLTTY."
    "\n\n(fn CONNECTION)"
  )
  register_function(getModelIdentifier, 1, 1, "get-model-identifier",
    "Get model identifier."
    "\n\n(fn CONNECTION)"
  )
  register_function(getDisplaySize, 1, 1, "get-display-size",
    "Get the size of the braille display reachable via CONNECTION."
    "\n\nReturns a `cons' where `car' is the x dimension and `cdr' the y dimension."
    "\n\n(fn CONNECTION)"
  )
  register_function(enterTtyMode, 1, 3, "enter-tty-mode",
    "Enter TTY mode."
    "\n\n(fn CONNECTION &optional TTY DRIVER)"
  )
  register_function(leaveTtyMode, 1, 1, "leave-tty-mode",
    "Leave TTY mode."
    "\n\n(fn CONNECTION)"
  )
  register_function(writeText, 2, 3, "write-text",
    "Write STRING to the braille display."
    "\n\nCURSOR is either an integer or the symbol `leave'."
    "\n\n(fn CONNECTION STRING CURSOR)"
  )
  register_function(readKey, 1, 2, "read-key",
    "Read a keypress from CONNECTION."
    "\n\nIf WAIT is non-nil, wait until a keypress actually arrives."
    "\n\n(fn CONNECTION WAIT)"
  )
  register_function(readKeyWithTimeout, 2, 2, "read-key-with-timeout",
    "Read a keypress from CONNECTION waiting MILISECONDS."
    "\n\n(fn CONNECTION MILISECONDS)"
  )
  register_function(acceptKeys, changeKeysMinArity, emacs_variadic_function, "accept-keys",
    "Ask the server to give KEY-CODES to the application."
    "\n\nTYPE should be one of the following symbols:"
    "\n  'all' for all keys"
    "\n  'type' for keys of a given type"
    "\n  'command' for keys of a given command block, i.e. matching the key type and command parts"
    "\n  'key' for a given key with any flags"
    "\n  'code' for a given key code"
    "\n\n(fn CONNECTION TYPE &rest KEY-CODES)"
  )
  register_function(ignoreKeys, changeKeysMinArity, emacs_variadic_function, "ignore-keys",
    "Ask the server to handle KEY-CODES by brltty."
    "\n\nSee `brlapi-accept-keys' for a description of the TYPE argument."
    "\n\n(fn CONNECTION TYPE &rest KEY-CODES)"
  )
  register_function(describeKeyCode, 1, 1, "describe-key-code",
    "Decode KEY-CODE into its individual symbolic components."
    "\n\n(fn KEY-CODE)"
  )
  register_function(getDriverCode, 1, 1, "get-driver-code",
    "Get the driver code (a 2 letter string) of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(getDriverVersion, 1, 1, "get-driver-version",
    "Get the driver version(a string) of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(getClipboardContent, 1, 1, "get-clipboard-content",
    "Get the content of the clipboard of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(setClipboardContent, 2, 2, "set-clipboard-content",
    "Set the content of the clipboard of CONNECTION to STRING."
    "\n\n(fn CONNECTION STRING)"
  )
  register_function(getComputerBrailleTable, 1, 1, "get-computer-braille-table",
    "Get the computer braille table of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(setComputerBrailleTable, 2, 2, "set-computer-braille-table",
    "Set the computer braille table of CONNECTION to STRING."
    "\n\n(fn CONNECTION STRING)"
  )
  register_function(getLiteraryBrailleTable, 1, 1, "get-literary-braille-table",
    "Get the literary braille table of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(setLiteraryBrailleTable, 2, 2, "set-literary-braille-table",
    "Set the literary braille table of CONNECTION to STRING."
    "\n\n(fn CONNECTION STRING)"
  )
  register_function(getMessageLocae, 1, 1, "get-message-locale",
    "Get the message locale of CONNECTION."
    "\n\n(fn CONNECTION)"
  )
  register_function(setMessageLocale, 2, 2, "set-message-locale",
    "Set the message locale of CONNECTION to STRING."
    "\n\n(fn CONNECTION STRING)"
  )
  register_function(getBoundCommandKeycodes, 1, 1, "get-bound-command-keycodes",
    "Get commands bound by the driver."
    "\n\n(fn CONNECTION)"
  )
  register_function(getCommandKeycodeName, 2, 2, "get-command-keycode-name",
    "Get the name (a symbol) of the given command KEYCODE."
    "\n\n(fn KEYCODE)"
  )
  register_function(getCommandKeycodeSummary, 2, 2, "get-command-keycode-summary",
    "Get a description for a command KEYCODE."
    "\n\n(fn KEYCODE)"
  )
  register_function(getDefinedDriverKeycodes, 1, 1, "get-defined-driver-keycodes",
    "Get a list of defined driver specific keycodes."
    "\n\n(fn CONNECTION)"
  )
  register_function(getDriverKeycodeName, 2, 2, "get-driver-keycode-name",
    "Get the name (a symbol) of the driver specific KEYCODE."
    "\n\n(fn KEYCODE)"
  )
  register_function(getDriverKeycodeSummary, 2, 2, "get-driver-keycode-summary",
    "Get a description for a driver specific KEYCODE."
    "\n\n(fn KEYCODE)"
  )
  register_function(closeConnection, 1, 1, "close-connection",
    "Close the connection."
    "\n\n(fn CONNECTION)"
  )
#undef register_function

  return 0;
}