/usr/include/gwenhywfar4/gwenhywfar/path.h is in libgwenhywfar60-dev 4.12.0beta-3+b1.
This file is owned by root:root, with mode 0o644.
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begin : Tue Sep 09 2003
copyright : (C) 2003-2010 by Martin Preuss
email : martin@libchipcard.de
***************************************************************************
* *
* 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., 59 Temple Place, Suite 330, Boston, *
* MA 02111-1307 USA *
* *
***************************************************************************/
#ifndef GWENHYWFAR_PATH_H
#define GWENHYWFAR_PATH_H
#include <gwenhywfar/gwenhywfarapi.h>
#include <gwenhywfar/types.h>
#include <gwenhywfar/buffer.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @defgroup MOD_PATH Paths
* @ingroup MOD_PARSER
*
* @brief These functions work on general paths.
*
* A path consists of a list of elements separated by a slash, like in
* <i>/element1/element2/element3</i>.
* An element can either be a <i>group</i> or an <i>item</i>.
* Groups can contain multiple items and groups, but an item can not contain
* anything.
* So there can at most be <strong>one</strong> item, and it must be the
* last element.
* An example of how to use these functions is given in the module
* @ref MOD_DB. These functions can also be used with files and folders. In
* this case a group corresponds to a folder and items correspond to files.
*/
/*@{*/
/**
* @name Path Flags
*
* The path flags only use the lower word of the integer. The high word
* may be used/interpreted by the called function.
*/
/*@{*/
/**
* if this is set then all elements of the path must exist.
*/
#define GWEN_PATH_FLAGS_PATHMUSTEXIST 0x00000001
/**
* if this is set then none of the elements of the path must exist.
*/
#define GWEN_PATH_FLAGS_PATHMUSTNOTEXIST 0x00000002
/**
* if this bit is set then the whole path (at any depth!) will be created.
* This may lead to double entries at any part of the path.
* You need this in very rare cases, most likely you want
* @ref GWEN_PATH_FLAGS_NAMEMUSTEXIST.
*/
#define GWEN_PATH_FLAGS_PATHCREATE 0x00000004
/**
* if this bit is set then the last element of the path MUST exist.
* This implies @ref GWEN_PATH_FLAGS_PATHMUSTEXIST
*/
#define GWEN_PATH_FLAGS_NAMEMUSTEXIST 0x00000008
/**
* if this bit is set then the last element of the path MUST NOT exist.
*/
#define GWEN_PATH_FLAGS_NAMEMUSTNOTEXIST 0x00000010
/**
* if this bit is set then the last element of the path is created in any
* case (this is for groups).
* This may lead to double entries of the last element.
*/
#define GWEN_PATH_FLAGS_CREATE_GROUP 0x00000020
/**
* if this bit is set then the last element of the path is created in any
* case (this is for variables).
* This may lead to double entries of the last element.
*/
#define GWEN_PATH_FLAGS_CREATE_VAR 0x00000040
/**
* a variable is wanted (if this bit is 0 then a group is wanted).
* This flag is used internally, too. When the path handler function
* is called by @ref GWEN_Path_Handle then this flag is modified
* to reflect the type of the current path element.
*/
#define GWEN_PATH_FLAGS_VARIABLE 0x00000080
/**
* all elements of the path are to be escaped.
* This is usefull when used with file names etc. It makes sure that the
* path elements presented to the path element handler function only
* consist of alphanumeric characters. All other characters are escaped
* using @ref GWEN_Text_Escape.
*/
#define GWEN_PATH_FLAGS_ESCAPE 0x00000100
/** use the same flag for both escape and unescape */
#define GWEN_PATH_FLAGS_UNESCAPE 0x00000100
/* be more tolerant, don't escape common characters such as '.' */
#define GWEN_PATH_FLAGS_TOLERANT_ESCAPE 0x00000200
/**
* Allow to also escape/unescape the last path element (otherwise it will
* not be escaped/unescaped).
*/
#define GWEN_PATH_FLAGS_CONVERT_LAST 0x00000400
/**
* Allows checking for root. If the path begins with a slash ('/') and this
* flags is set the slash will be included in the first path element
* passed to the element handler function. Additionally the flag
* @ref GWEN_PATH_FLAGS_ROOT will be set. Otherwise there will be no check
* and special treatment of root entries.
*/
#define GWEN_PATH_FLAGS_CHECKROOT 0x00000800
/**
* This flag is only used with @ref GWEN_Path_HandleWithIdx to disable
* index handling.
*/
#define GWEN_PATH_FLAGS_NO_IDX 0x00001000
/**
*
*/
#define GWEN_PATH_FLAGS_RFU1 0x00002000
/**
* @internal
*/
#define GWEN_PATH_FLAGS_INTERNAL 0x0000c000
/**
* @internal
* this is flagged for the path function. If this is set then the
* element given is the last one, otherwise it is not.
*/
#define GWEN_PATH_FLAGS_LAST 0x00004000
/**
* @internal
* this is flagged for the path function. If this is set then the
* element given is within root (in this case the element passed to the
* element handler funcion will start with a slash), otherwise it is not.
*/
#define GWEN_PATH_FLAGS_ROOT 0x00008000
/*@}*/
typedef void* (*GWEN_PATHHANDLERPTR)(const char *entry,
void *data,
uint32_t flags);
typedef void* (*GWEN_PATHIDXHANDLERPTR)(const char *entry,
void *data,
int idx,
uint32_t flags);
/**
* This function works on a path according to the given flags.
* For every element the given function is called.
* A path consists of multiple elements separated by a slash ("/"),
* e.g. "first/second/element".
* This function is used by the DB module but may also be used for any
* type of path handling (like creating all directories along a given path).
* This function simply calls the given function for any element as long as
* that function returns a non-zero value or the path ends.
* The type of the returned value completely depends on the function called.
* @return 0 on error, !=0 otherwise
*/
GWENHYWFAR_API
void *GWEN_Path_Handle(const char *path,
void *data,
uint32_t flags,
GWEN_PATHHANDLERPTR elementFunction);
GWENHYWFAR_API
void *GWEN_Path_HandleWithIdx(const char *path,
void *data,
uint32_t flags,
GWEN_PATHIDXHANDLERPTR elementFunction);
/**
* Converts the given path according to the given flags.
* You can use this function to escape, unescape or simply store all path
* elements within a buffer. The converted path will simply be appended to
* the given buffer (without any leading slash).
*/
GWENHYWFAR_API
int GWEN_Path_Convert(const char *path,
GWEN_BUFFER *buffer,
uint32_t flags);
/*@}*/ /* defgroup */
#ifdef __cplusplus
}
#endif
#endif /* GWENHYWFAR_PATH_H */
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