114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
// =========================================
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// | SilverMUD - messages.c |
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// | Copyright (C) 2023, Barra Ó Catháin |
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// | See end of file for copyright notice. |
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// =========================================
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#include <stdlib.h>
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#include <string.h>
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#include <libguile.h>
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#include "messages.h"
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// Allocate and initialize a client to server message using the passed values:
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struct ClientToServerMessage * createClientToServerMessage(char * content)
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{
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// Allocate the needed memory for the message:
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struct ClientToServerMessage * newMessage = calloc(1, sizeof(struct ClientToServerMessage));
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// Copy the string and terminate it:
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strncpy(newMessage->content, content, MESSAGE_CONTENT_LENGTH - 1);
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newMessage->content[MESSAGE_CONTENT_LENGTH - 1] = '\0';
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// Return the pointer:
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return newMessage;
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}
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// A Scheme wrapper for creating client to server messages:
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SCM scheme_createClientToServerMessage(SCM content)
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{
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// Check that we have been provided the right Scheme type:
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if (scm_string_p(content))
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{
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// Convert the Scheme string to a C string:
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char * contentString = scm_to_locale_stringn(content, NULL);
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// Create the message:
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struct ClientToServerMessage * message = createClientToServerMessage(contentString);
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// Free the converted string:
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free(contentString);
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// Return the pointer as a Scheme object:
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return scm_from_pointer(message);
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}
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else
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{
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return SCM_BOOL_F;
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}
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}
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// Allocate and initialize a server to client message using the passed values:
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struct ServerToClientMessage * createServerToClientMessage(uint8_t type, char * name, char * content)
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{
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// Allocate the needed memory for the message:
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struct ServerToClientMessage * newMessage = calloc(1, sizeof(struct ServerToClientMessage));
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// Copy the type:
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newMessage->type = type;
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// Copy the strings and terminate them:
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strncpy(newMessage->name, name, MESSAGE_NAME_LENGTH - 1);
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newMessage->name[MESSAGE_NAME_LENGTH - 1] = '\0';
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strncpy(newMessage->content, content, MESSAGE_CONTENT_LENGTH - 1);
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newMessage->content[MESSAGE_CONTENT_LENGTH - 1] = '\0';
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return newMessage;
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}
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// A Scheme wrapper for creating server to client messages:
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SCM scheme_createServerToClientMessage(SCM type, SCM name, SCM content)
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{
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// Check that we have been provided the right Scheme type:
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if (scm_integer_p(type) && scm_string_p(name) && scm_string_p(content))
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{
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// Convert the integer to a C integer:
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uint8_t typeInteger = scm_to_uint8(type);
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// Convert the Scheme strings to C strings:
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char * nameString = scm_to_locale_stringn(name, NULL);
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char * contentString = scm_to_locale_stringn(content, NULL);
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// Create the message:
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struct ServerToClientMessage * message =
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createServerToClientMessage(typeInteger, nameString, contentString);
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// Free the converted string:
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free(nameString);
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free(contentString);
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// Return the pointer as a Scheme object:
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return scm_from_pointer(message);
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}
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else
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{
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return SCM_BOOL_F;
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}
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}
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// ================================================
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// | End of messages.c, copyright notice follows. |
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// ================================================
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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