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Diffstat (limited to 'src/parser.c')
| -rw-r--r-- | src/parser.c | 263 |
1 files changed, 0 insertions, 263 deletions
diff --git a/src/parser.c b/src/parser.c deleted file mode 100644 index af01ddcc..00000000 --- a/src/parser.c +++ /dev/null @@ -1,263 +0,0 @@ -/* - * parser.c - * - * Copyright (C) 2012, 2013 James Booth <boothj5@gmail.com> - * - * This file is part of Profanity. - * - * Profanity is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * Profanity is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with Profanity. If not, see <http://www.gnu.org/licenses/>. - * - */ - -#include <stdlib.h> -#include <string.h> - -#include <glib.h> - -/* - * Take a full line of input and return an array of strings representing - * the arguments of a command. - * If the number of arguments found is less than min, or more than max - * NULL is returned. - * - * inp - The line of input - * min - The minimum allowed number of arguments - * max - The maxmimum allowed number of arguments - * - * Returns - An NULL terminated array of strings representing the aguments - * of the command, or NULL if the validation fails. - * - * E.g. the following input line: - * - * /cmd arg1 arg2 - * - * Will return a pointer to the following array: - * - * { "arg1", "arg2", NULL } - * - */ -gchar ** -parse_args(const char * const inp, int min, int max) -{ - if (inp == NULL) { - return NULL; - } - - // copy and strip input of leading/trailing whitepsace - char *copy = strdup(inp); - g_strstrip(copy); - - int inp_size = strlen(copy); - gboolean in_token = FALSE; - gboolean in_quotes = FALSE; - char *token_start = ©[0]; - int token_size = 0; - GSList *tokens = NULL; - - // add tokens to GSList - int i; - for (i = 0; i <= inp_size; i++) { - if (!in_token) { - if (copy[i] == ' ') { - continue; - } else { - in_token = TRUE; - if (copy[i] == '"') { - in_quotes = TRUE; - i++; - } - token_start = ©[i]; - token_size++; - } - } else { - if (in_quotes) { - if ((copy[i] == '\0') || (copy[i] == '"')) { - tokens = g_slist_append(tokens, g_strndup(token_start, - token_size)); - token_size = 0; - in_token = FALSE; - in_quotes = FALSE; - } else { - token_size++; - } - } else { - if (copy[i] == ' ' || copy[i] == '\0') { - tokens = g_slist_append(tokens, g_strndup(token_start, - token_size)); - token_size = 0; - in_token = FALSE; - } else { - token_size++; - } - } - } - } - - int num = g_slist_length(tokens) - 1; - - // if num args not valid return NULL - if ((num < min) || (num > max)) { - g_slist_free_full(tokens, free); - g_free(copy); - return NULL; - - // if min allowed is 0 and 0 found, return empty char* array - } else if (min == 0 && num == 0) { - g_slist_free_full(tokens, free); - gchar **args = malloc((num + 1) * sizeof(*args)); - args[0] = NULL; - g_free(copy); - return args; - - // otherwise return args array - } else { - gchar **args = malloc((num + 1) * sizeof(*args)); - GSList *token = tokens; - token = g_slist_next(token); - int arg_count = 0; - - while (token != NULL) { - args[arg_count++] = strdup(token->data); - token = g_slist_next(token); - } - - args[arg_count] = NULL; - g_slist_free_full(tokens, free); - g_free(copy); - - return args; - } -} - -/* - * Take a full line of input and return an array of strings representing - * the arguments of a command. This function handles when the last parameter - * to the command is free text e.g. - * - * /msg user@host here is a message - * - * If the number of arguments found is less than min, or more than max - * NULL is returned. - * - * inp - The line of input - * min - The minimum allowed number of arguments - * max - The maxmimum allowed number of arguments - * - * Returns - An NULL terminated array of strings representing the aguments - * of the command, or NULL if the validation fails. - * - * E.g. the following input line: - * - * /cmd arg1 arg2 some free text - * - * Will return a pointer to the following array: - * - * { "arg1", "arg2", "some free text", NULL } - * - */ -gchar ** -parse_args_with_freetext(const char * const inp, int min, int max) -{ - if (inp == NULL) { - return NULL; - } - - // copy and strip input of leading/trailing whitepsace - char *copy = strdup(inp); - g_strstrip(copy); - - int inp_size = strlen(copy); - gboolean in_token = FALSE; - gboolean in_freetext = FALSE; - gboolean in_quotes = FALSE; - char *token_start = ©[0]; - int token_size = 0; - int num_tokens = 0; - GSList *tokens = NULL; - - // add tokens to GSList - int i; - for (i = 0; i <= inp_size; i++) { - if (!in_token) { - if (copy[i] == ' ') { - continue; - } else { - in_token = TRUE; - num_tokens++; - if (num_tokens == max + 1) { - in_freetext = TRUE; - } else if (copy[i] == '"') { - in_quotes = TRUE; - i++; - } - token_start = ©[i]; - token_size++; - } - } else { - if (in_quotes) { - if ((copy[i] == '\0') || (copy[i] == '"')) { - tokens = g_slist_append(tokens, g_strndup(token_start, - token_size)); - token_size = 0; - in_token = FALSE; - in_quotes = FALSE; - } else { - token_size++; - } - } else { - if ((!in_freetext && copy[i] == ' ') || copy[i] == '\0') { - tokens = g_slist_append(tokens, g_strndup(token_start, - token_size)); - token_size = 0; - in_token = FALSE; - } else { - token_size++; - } - } - } - } - - int num = g_slist_length(tokens) - 1; - - // if num args not valid return NULL - if ((num < min) || (num > max)) { - g_slist_free_full(tokens, free); - free(copy); - return NULL; - - // if min allowed is 0 and 0 found, return empty char* array - } else if (min == 0 && num == 0) { - gchar **args = malloc((num + 1) * sizeof(*args)); - args[0] = NULL; - return args; - - // otherwise return args array - } else { - gchar **args = malloc((num + 1) * sizeof(*args)); - GSList *token = tokens; - token = g_slist_next(token); - int arg_count = 0; - - while (token != NULL) { - args[arg_count++] = strdup(token->data); - token = g_slist_next(token); - } - - args[arg_count] = NULL; - g_slist_free_full(tokens, free); - free(copy); - - return args; - } -} |