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/*******************************************************************************
* libproxy - A library for proxy configuration
* Copyright (C) 2006 Nathaniel McCallum <nathaniel@natemccallum.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#ifndef MISC_H_
#define MISC_H_
#include <stdlib.h> // For type size_t
/**
* Allocates memory and always returns valid memory.
* @size Amount of memory to allocate in bytes
* @return Pointer to the allocated memory
*/
void *px_malloc0(size_t size);
/**
* Frees memory and doesn't crash if that memory is NULL
* @mem Memory to free or NULL
*/
void px_free(void *mem);
/**
* Duplicates the first n characters of the string s
* @s String to duplicate
* @n Number of characters of the string to duplicate
* @return Newly allocated string
*/
char *px_strndup(const char *s, size_t n);
/**
* Duplicates a string
* @s String to duplicate
* @return Newly allocated string
*/
char *px_strdup(const char *s);
/**
* Duplicates a string vector
* @sv String vector to duplicate
* @return Newly allocated string vector (free w/ px_strfreev())
*/
char **px_strdupv(const char **sv);
/**
* Concatenates two or more strings into a newly allocated string
* @s The first string to concatenate.
* @... Subsequent strings. The last argument must be NULL.
* @return Newly allocated string
*/
char *px_strcat(const char *s, ...);
/**
* Joins NULL terminated array of strings into one string separated by delimiter
* @strv NULL terminated array of string to join
* @delimiter The string to use in between each string in the array
* @return Newly allocated string
*/
char *px_strjoin(const char **strv, const char *delimiter);
/**
* Splits a string into a NULL terminated array based on delimiter
* @string The string to split
* @delimiter The delimiter to split on
* @return The NULL terminated array (free with px_strfreev())
*/
char **px_strsplit(const char *string, const char *delimiter);
/**
* Frees the memory used by a NULL terminated string array
* @strv The NULL terminated string array
*/
void px_strfreev(char **strv);
/**
* Reads a single line of text from the specified file descriptor
* @fd File descriptor to read from
* @return Newly allocated string containing one line only
*/
char *px_readline(int fd);
/**
* Trims off all the leading whitespace characters
* @string The string to strip
* @return A newly allocated copy of string without all the leading whitespace
*/
char *px_strlstrip(char *string);
/**
* Trims off all the trailing whitespace characters
* @string The string to strip
* @return A newly allocated copy of string without all the trailing whitespace
*/
char *px_strrstrip(char *string);
/**
* Trims off all the leading and trailing whitespace characters
* @string The string to strip
* @return A newly allocated copy of string without all the leading and trailing whitespace
*/
char *px_strstrip(char *string);
#endif /*MISC_H_*/
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