00001 /* 00002 * Asterisk -- An open source telephony toolkit. 00003 * 00004 * Copyright (C) 1999 - 2005, Digium, Inc. 00005 * 00006 * Mark Spencer <markster@digium.com> 00007 * 00008 * See http://www.asterisk.org for more information about 00009 * the Asterisk project. Please do not directly contact 00010 * any of the maintainers of this project for assistance; 00011 * the project provides a web site, mailing lists and IRC 00012 * channels for your use. 00013 * 00014 * This program is free software, distributed under the terms of 00015 * the GNU General Public License Version 2. See the LICENSE file 00016 * at the top of the source tree. 00017 */ 00018 00019 /*! \file 00020 * 00021 * \brief Channel Variables 00022 * 00023 */ 00024 00025 #include <stdlib.h> 00026 #include <string.h> 00027 00028 #include "asterisk.h" 00029 00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 7221 $") 00031 00032 #include "asterisk/chanvars.h" 00033 #include "asterisk/logger.h" 00034 #include "asterisk/strings.h" 00035 00036 struct ast_var_t *ast_var_assign(const char *name, const char *value) 00037 { 00038 int i; 00039 struct ast_var_t *var; 00040 00041 var = calloc(sizeof(struct ast_var_t) + strlen(name) + 1 + strlen(value) + 1, sizeof(char)); 00042 00043 if (var == NULL) { 00044 ast_log(LOG_WARNING, "Out of memory\n"); 00045 return NULL; 00046 } 00047 00048 i = strlen(name) + 1; 00049 ast_copy_string(var->name, name, i); 00050 var->value = var->name + i; 00051 ast_copy_string(var->value, value, strlen(value) + 1); 00052 00053 return var; 00054 } 00055 00056 void ast_var_delete(struct ast_var_t *var) 00057 { 00058 if (var) 00059 free(var); 00060 } 00061 00062 char *ast_var_name(struct ast_var_t *var) 00063 { 00064 char *name; 00065 00066 if (var == NULL) 00067 return NULL; 00068 if (var->name == NULL) 00069 return NULL; 00070 /* Return the name without the initial underscores */ 00071 if (var->name[0] == '_') { 00072 if (var->name[1] == '_') 00073 name = (char*)&(var->name[2]); 00074 else 00075 name = (char*)&(var->name[1]); 00076 } else 00077 name = var->name; 00078 return name; 00079 } 00080 00081 char *ast_var_full_name(struct ast_var_t *var) 00082 { 00083 return (var ? var->name : NULL); 00084 } 00085 00086 char *ast_var_value(struct ast_var_t *var) 00087 { 00088 return (var ? var->value : NULL); 00089 } 00090 00091