129 lines
6.1 KiB
C
129 lines
6.1 KiB
C
/* str.h - Common string-related functions
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*
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* Copyright (C)
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* 2000 Russell Kroll <rkroll@exploits.org>
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* 2015 Daniele Pezzini <hyouko@gmail.com>
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef STR_H
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#define STR_H
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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extern "C" {
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/* *INDENT-ON* */
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#endif
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/* Remove all
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* - leading and trailing (str_trim[_m]())
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* - leading (str_ltrim[_m]())
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* - trailing (str_rtrim[_m]))
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* instances of
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* - *character* (plain versions)
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* - each character in *characters* ('_m' versions)
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* from a string.
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* - *string*: null-terminated byte string from which characters are to be removed;
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* - *character*: character that has to be removed from *string*;
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* - *characters*: null-terminated byte string of characters to be removed from string.
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* Return:
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* - NULL, if *string* is NULL, otherwise
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* - *string* without the specified characters (upto an empty string). */
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char *str_trim(char *string, const char character);
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char *str_trim_m(char *string, const char *characters);
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char *str_ltrim(char *string, const char character);
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char *str_ltrim_m(char *string, const char *characters);
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char *str_rtrim(char *string, const char character);
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char *str_rtrim_m(char *string, const char *characters);
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/* Remove all
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* - leading and trailing (str_trim_space())
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* - leading (str_ltrim_space())
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* - trailing (str_rtrim_space())
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* spaces (as identified by isspace()) from a string.
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* - *string*: null-terminated byte string from which spaces are to be removed.
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* Return:
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* - NULL, if *string* is NULL, otherwise
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* - *string* without the specified spaces (upto an empty string). */
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char *str_trim_space(char *string);
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char *str_ltrim_space(char *string);
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char *str_rtrim_space(char *string);
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/* Tell whether a string can be converted to a number of type str_is_<type>[_strict]().
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* - *string*: the null-terminated byte string to check;
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* - *base*: the base the string must conform to.
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* The same restrictions of the corresponding str_to_<type>[_strict]() functions apply.
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* If *string* can be converted to a valid number of type <type>, return 1.
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* Otherwise, return 0 with errno set to:
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* - ENOMEM, if available memory is insufficient;
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* - EINVAL, if the value of *base* is not supported or no conversion could be performed;
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* - ERANGE, if the converted value would be out of the acceptable range of <type>. */
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int str_is_short(const char *string, const int base);
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int str_is_short_strict(const char *string, const int base);
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int str_is_ushort(const char *string, const int base);
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int str_is_ushort_strict(const char *string, const int base);
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int str_is_int(const char *string, const int base);
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int str_is_int_strict(const char *string, const int base);
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int str_is_uint(const char *string, const int base);
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int str_is_uint_strict(const char *string, const int base);
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int str_is_long(const char *string, const int base);
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int str_is_long_strict(const char *string, const int base);
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int str_is_ulong(const char *string, const int base);
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int str_is_ulong_strict(const char *string, const int base);
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int str_is_double(const char *string, const int base);
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int str_is_double_strict(const char *string, const int base);
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/* Convert a string to a number of type str_to_<type>[_strict]().
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* - *string*: the null-terminated byte string to convert,
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* 'strict' versions' strings shall not contain spaces (as identified by isspace()),
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* - short, int, long: strtol()'s restrictions apply,
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* - ushort, uint, ulong: strtoul()'s restrictions apply, plus:
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* - plus ('+') and minus ('-') signs (and hence negative values) are not supported,
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* - double: strtod()'s restrictions apply, plus:
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* - infinity and nan are not supported,
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* - radix character (decimal point character) must be a period ('.');
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* - *number*: a pointer to a <type> that will be filled upon execution;
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* - *base*: the base the string must conform to,
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* - short, ushort, int, uint, long, ulong: acceptable values as in strtol()/strtoul(),
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* - double: 0 for auto-select, 10 or 16.
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* On success, return 1 with *number* being the result of the conversion of *string*.
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* On failure, return 0 with *number* being 0 and errno set to:
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* - ENOMEM, if available memory is insufficient;
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* - EINVAL, if the value of *base* is not supported or no conversion can be performed;
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* - ERANGE, if the converted value is out of the acceptable range of <type>. */
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int str_to_short(const char *string, short *number, const int base);
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int str_to_short_strict(const char *string, short *number, const int base);
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int str_to_ushort(const char *string, unsigned short *number, const int base);
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int str_to_ushort_strict(const char *string, unsigned short *number, const int base);
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int str_to_int(const char *string, int *number, const int base);
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int str_to_int_strict(const char *string, int *number, const int base);
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int str_to_uint(const char *string, unsigned int *number, const int base);
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int str_to_uint_strict(const char *string, unsigned int *number, const int base);
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int str_to_long(const char *string, long *number, const int base);
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int str_to_long_strict(const char *string, long *number, const int base);
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int str_to_ulong(const char *string, unsigned long *number, const int base);
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int str_to_ulong_strict(const char *string, unsigned long *number, const int base);
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int str_to_double(const char *string, double *number, const int base);
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int str_to_double_strict(const char *string, double *number, const int base);
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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}
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/* *INDENT-ON* */
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#endif
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#endif /* STR_H */
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