diff options
Diffstat (limited to 'hicn-light/src/hicn/config/commandParser.c')
| -rw-r--r-- | hicn-light/src/hicn/config/commandParser.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/hicn-light/src/hicn/config/commandParser.c b/hicn-light/src/hicn/config/commandParser.c deleted file mode 100644 index f4652fe39..000000000 --- a/hicn-light/src/hicn/config/commandParser.c +++ /dev/null @@ -1,221 +0,0 @@ -/* - * Copyright (c) 2017-2019 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <hicn/hicn-light/config.h> - -#include <parc/assert/parc_Assert.h> -#include <stdbool.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <parc/security/parc_Security.h> - -#include <parc/algol/parc_List.h> -#include <parc/algol/parc_Memory.h> -#include <parc/algol/parc_Time.h> -#include <parc/algol/parc_TreeRedBlack.h> - -#include <hicn/config/commandParser.h> - -#ifndef __ANDROID__ -#ifdef HAVE_ERRNO_H -#include <errno.h> -#else -#ifndef _WIN32 -extern int errno; -#endif -#endif -#endif - -struct command_parser { - // key = command, value = CommandOps - PARCTreeRedBlack *commandTree; - bool debugFlag; -}; - -static int _stringCompare(const void *key1, const void *key2) { - return strcasecmp((const char *)key1, (const char *)key2); -} - -CommandParser *commandParser_Create(void) { - CommandParser *state = parcMemory_AllocateAndClear(sizeof(CommandParser)); - parcAssertNotNull(state, "parcMemory_AllocateAndClear(%zu) returned NULL", - sizeof(CommandParser)); - - state->commandTree = parcTreeRedBlack_Create(_stringCompare, // key compare - NULL, // key free - NULL, // key copy - NULL, // value equals - NULL, // value free - NULL // value copy - ); - state->debugFlag = false; - return state; -} - -void commandParser_Destroy(CommandParser **parserPtr) { - CommandParser *parser = *parserPtr; - - // destroy every element if it has a destroyer - PARCArrayList *values = parcTreeRedBlack_Values(parser->commandTree); - if (values) { - for (int i = 0; i < parcArrayList_Size(values); i++) { - CommandOps *ops = parcArrayList_Get(values, i); - parcTreeRedBlack_Remove(parser->commandTree, ops->command); - if (ops->destroyer) { - ops->destroyer(&ops); - } - } - parcArrayList_Destroy(&values); - } - - parcTreeRedBlack_Destroy(&parser->commandTree); - - parcMemory_Deallocate((void **)&parser); - *parserPtr = NULL; -} - -void commandParser_SetDebug(CommandParser *state, bool debugFlag) { - state->debugFlag = debugFlag; -} - -bool commandParser_GetDebug(CommandParser *state) { return state->debugFlag; } - -void commandParser_RegisterCommand(CommandParser *state, CommandOps *ops) { - parcAssertNotNull(state, "Parameter state must be non-null"); - parcAssertNotNull(ops, "Parameter ops must be non-null"); - parcAssertNotNull(ops->command, "Operation command string must be non-null"); - - void *exists = parcTreeRedBlack_Get(state->commandTree, ops->command); - parcAssertNull(exists, "Command '%s' already exists in the tree %p\n", - ops->command, (void *)exists); - - parcTreeRedBlack_Insert(state->commandTree, (void *)ops->command, - (void *)ops); - - // if the command being registered asked for an init function to be called, - // call it - if (ops->init != NULL) { - ops->init(state, ops); - } -} - -static PARCList *parseStringIntoTokens(const char *originalString) { - PARCList *list = - parcList(parcArrayList_Create(parcArrayList_StdlibFreeFunction), - PARCArrayListAsPARCList); - - char *token; - - char *tofree = - parcMemory_StringDuplicate(originalString, strlen(originalString) + 1); - char *string = tofree; - - token = strtok(string, " \t\n"); - while (token != NULL) { - if (strlen(token) > 0) { - parcList_Add(list, strdup(token)); - } - token = strtok(NULL, " \t\n"); - } - - parcMemory_Deallocate((void **)&tofree); - - return list; -} - -/** - * Matches the user arguments to available commands, returning the command or - * NULL if not found - * - * <#Paragraphs Of Explanation#> - * - * @param [<#in out in,out#>] <#name#> <#description#> - * - * @return <#value#> <#explanation#> - * - * Example: - * @code - * <#example#> - * @endcode - */ -static CommandOps *commandParser_MatchCommand(CommandParser *state, - PARCList *args) { - // Find the longest matching prefix command. - // Pretty wildly inefficient - - size_t longest_token_count = 0; - char *longest_command = NULL; - - PARCArrayList *commands = parcTreeRedBlack_Keys(state->commandTree); - for (int i = 0; i < parcArrayList_Size(commands); i++) { - char *command = parcArrayList_Get(commands, i); - PARCList *command_tokens = parseStringIntoTokens(command); - - // is it a prefix match? - if (parcList_Size(args) >= parcList_Size(command_tokens)) { - bool possible_match = true; - for (int i = 0; i < parcList_Size(command_tokens) && possible_match; - i++) { - const char *a = parcList_GetAtIndex(command_tokens, i); - const char *b = parcList_GetAtIndex(args, i); - if (strncasecmp(a, b, strlen(a) + 1) != 0) { - possible_match = false; - } - } - - if (possible_match && - parcList_Size(command_tokens) > longest_token_count) { - longest_token_count = parcList_Size(command_tokens); - longest_command = command; - } - } - - parcList_Release(&command_tokens); - } - - parcArrayList_Destroy(&commands); - - if (longest_token_count == 0) { - return NULL; - } else { - CommandOps *ops = parcTreeRedBlack_Get(state->commandTree, longest_command); - parcAssertNotNull(ops, "Got null operations for command '%s'\n", - longest_command); - return ops; - } -} - -CommandReturn commandParser_DispatchCommand(CommandParser *state, - PARCList *args, - char *output, - size_t output_size) { - parcAssertNotNull(output, "output buffer is null\n"); - CommandOps *ops = commandParser_MatchCommand(state, args); - - if (ops == NULL) { - snprintf(output, output_size, "Command not found.\n"); - return CommandReturn_Failure; - } else { - return ops->execute(state, ops, args, output, output_size); - } -} - -bool commandParser_ContainsCommand(CommandParser *parser, const char *command) { - CommandOps *ops = parcTreeRedBlack_Get(parser->commandTree, command); - return (ops != NULL); -} |