diff options
Diffstat (limited to 'src/tokenizer.c')
| -rw-r--r-- | src/tokenizer.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/src/tokenizer.c b/src/tokenizer.c deleted file mode 100644 index bbb34e100..000000000 --- a/src/tokenizer.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program 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 2 of the License, or - * (at your option) any later version. - * - * This program 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 this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "tokenizer.h" -#include "string_util.h" - -#include <stdbool.h> -#include <assert.h> -#include <string.h> - -G_GNUC_CONST -static GQuark -tokenizer_quark(void) -{ - return g_quark_from_static_string("tokenizer"); -} - -static inline bool -valid_word_first_char(char ch) -{ - return g_ascii_isalpha(ch); -} - -static inline bool -valid_word_char(char ch) -{ - return g_ascii_isalnum(ch) || ch == '_'; -} - -char * -tokenizer_next_word(char **input_p, GError **error_r) -{ - char *word, *input; - - assert(input_p != NULL); - assert(*input_p != NULL); - - word = input = *input_p; - - if (*input == 0) - return NULL; - - /* check the first character */ - - if (!valid_word_first_char(*input)) { - g_set_error(error_r, tokenizer_quark(), 0, - "Letter expected"); - return NULL; - } - - /* now iterate over the other characters until we find a - whitespace or end-of-string */ - - while (*++input != 0) { - if (g_ascii_isspace(*input)) { - /* a whitespace: the word ends here */ - *input = 0; - /* skip all following spaces, too */ - input = strchug_fast(input + 1); - break; - } - - if (!valid_word_char(*input)) { - *input_p = input; - g_set_error(error_r, tokenizer_quark(), 0, - "Invalid word character"); - return NULL; - } - } - - /* end of string: the string is already null-terminated - here */ - - *input_p = input; - return word; -} - -static inline bool -valid_unquoted_char(char ch) -{ - return (unsigned char)ch > 0x20 && ch != '"' && ch != '\''; -} - -char * -tokenizer_next_unquoted(char **input_p, GError **error_r) -{ - char *word, *input; - - assert(input_p != NULL); - assert(*input_p != NULL); - - word = input = *input_p; - - if (*input == 0) - return NULL; - - /* check the first character */ - - if (!valid_unquoted_char(*input)) { - g_set_error(error_r, tokenizer_quark(), 0, - "Invalid unquoted character"); - return NULL; - } - - /* now iterate over the other characters until we find a - whitespace or end-of-string */ - - while (*++input != 0) { - if (g_ascii_isspace(*input)) { - /* a whitespace: the word ends here */ - *input = 0; - /* skip all following spaces, too */ - input = strchug_fast(input + 1); - break; - } - - if (!valid_unquoted_char(*input)) { - *input_p = input; - g_set_error(error_r, tokenizer_quark(), 0, - "Invalid unquoted character"); - return NULL; - } - } - - /* end of string: the string is already null-terminated - here */ - - *input_p = input; - return word; -} - -char * -tokenizer_next_string(char **input_p, GError **error_r) -{ - char *word, *dest, *input; - - assert(input_p != NULL); - assert(*input_p != NULL); - - word = dest = input = *input_p; - - if (*input == 0) - /* end of line */ - return NULL; - - /* check for the opening " */ - - if (*input != '"') { - g_set_error(error_r, tokenizer_quark(), 0, - "'\"' expected"); - return NULL; - } - - ++input; - - /* copy all characters */ - - while (*input != '"') { - if (*input == '\\') - /* the backslash escapes the following - character */ - ++input; - - if (*input == 0) { - /* return input-1 so the caller can see the - difference between "end of line" and - "error" */ - *input_p = input - 1; - g_set_error(error_r, tokenizer_quark(), 0, - "Missing closing '\"'"); - return NULL; - } - - /* copy one character */ - *dest++ = *input++; - } - - /* the following character must be a whitespace (or end of - line) */ - - ++input; - if (*input != 0 && !g_ascii_isspace(*input)) { - *input_p = input; - g_set_error(error_r, tokenizer_quark(), 0, - "Space expected after closing '\"'"); - return NULL; - } - - /* finish the string and return it */ - - *dest = 0; - *input_p = strchug_fast(input); - return word; -} - -char * -tokenizer_next_param(char **input_p, GError **error_r) -{ - assert(input_p != NULL); - assert(*input_p != NULL); - - if (**input_p == '"') - return tokenizer_next_string(input_p, error_r); - else - return tokenizer_next_unquoted(input_p, error_r); -} |