path.h revision cda4a68d59969f27d3063ff91c9c3f887d34c8f9
/** @file
* IPRT - Path Manipulation.
*/
/*
* Copyright (C) 2006-2013 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___iprt_path_h
#define ___iprt_path_h
#ifdef IN_RING3
#endif
/** @defgroup grp_rt_path RTPath - Path Manipulation
* @ingroup grp_rt
* @{
*/
/**
* Host max path (the reasonable value).
*/
#if !defined(___iprt_param_h) || defined(DOXYGEN_RUNNING)
#endif
/** @def RTPATH_TAG
* The default allocation tag used by the RTPath allocation APIs.
*
* the pointer to the current file name. The string API will make of use of
* this as pointer to a volatile but read-only string.
*/
#ifndef RTPATH_TAG
# define RTPATH_TAG (__FILE__)
#endif
/** @name RTPATH_F_XXX - Generic flags for APIs working on the file system.
* @{ */
/** Last component: Work on the link. */
#define RTPATH_F_ON_LINK RT_BIT_32(0)
/** Last component: Follow if link. */
/** Don't allow symbolic links as part of the path.
* @remarks this flag is currently not implemented and will be ignored. */
/** @} */
/** Validates a flags parameter containing RTPATH_F_*.
* @remarks The parameters will be referenced multiple times. */
/** @name RTPATH_STR_F_XXX - Generic flags for APIs working with path strings.
* @{
*/
/** Host OS path style (default 0 value). */
/** DOS, OS/2 and Windows path style. */
/** Unix path style. */
/** Reserved path style. */
/** The path style mask. */
/** Partial path - no start.
* This causes the API to skip the root specification parsing. */
/** Partial path - no end.
* This causes the API to skip the filename and dir-slash parsing. */
/** Partial path - no start and no end. */
/** Reserved for future use. */
/** @} */
/** Validates a flags parameter containing RTPATH_FSTR_.
* @remarks The parameters will be references multiple times. */
&& ((a_fFlags) & RTPATH_STR_F_RESERVED_MASK) == 0 )
/** @def RTPATH_STYLE
* The host path style. This is set to RTPATH_STR_F_STYLE_DOS,
* RTPATH_STR_F_STYLE_UNIX, or other future styles. */
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
# define RTPATH_STYLE RTPATH_STR_F_STYLE_DOS
#else
# define RTPATH_STYLE RTPATH_STR_F_STYLE_UNIX
#endif
/** @def RTPATH_SLASH
* The preferred slash character.
*
* @remark IPRT will always accept unix slashes. So, normally you would
* never have to use this define.
*/
# define RTPATH_SLASH '\\'
# define RTPATH_SLASH '/'
#else
# error "Unsupported RTPATH_STYLE value."
#endif
/** @deprecated Use '/'! */
#define RTPATH_DELIMITER RTPATH_SLASH
/** @def RTPATH_SLASH_STR
* The preferred slash character as a string, handy for concatenations
* with other strings.
*
* @remark IPRT will always accept unix slashes. So, normally you would
* never have to use this define.
*/
# define RTPATH_SLASH_STR "\\"
# define RTPATH_SLASH_STR "/"
#else
# error "Unsupported RTPATH_STYLE value."
#endif
/** @def RTPATH_IS_SLASH
* Checks if a character is a slash.
*
* @returns true if it's a slash and false if not.
* @returns @param a_ch Char to check.
*/
#else
# error "Unsupported RTPATH_STYLE value."
#endif
/** @def RTPATH_IS_VOLSEP
* Checks if a character marks the end of the volume specification.
*
* @remark This is sufficient for the drive letter concept on PC.
* However it might be insufficient on other platforms
* and even on PC a UNC volume spec won't be detected this way.
* Use the RTPath@<too be created@>() instead.
*
* @returns true if it is and false if it isn't.
* @returns @param a_ch Char to check.
*/
# define RTPATH_IS_VOLSEP(a_ch) (false)
#else
# error "Unsupported RTPATH_STYLE value."
#endif
/** @def RTPATH_IS_SEP
* Checks if a character is path component separator
*
* @returns true if it is and false if it isn't.
* @returns @param a_ch Char to check.
* @
*/
/**
* Checks if the path exists.
*
* Symbolic links will all be attempted resolved and broken links means false.
*
* @returns true if it exists and false if it doesn't.
* @param pszPath The path to check.
*/
/**
* Checks if the path exists.
*
* @returns true if it exists and false if it doesn't.
* @param pszPath The path to check.
* @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK.
*/
/**
* Sets the current working directory of the process.
*
* @returns IPRT status code.
* @param pszPath The path to the new working directory.
*/
/**
* Gets the current working directory of the process.
*
* @returns IPRT status code.
* @param pszPath Where to store the path.
* @param cchPath The size of the buffer pszPath points to.
*/
/**
* Get the real path (no symlinks, no . or .. components), must exist.
*
* @returns iprt status code.
* @param pszPath The path to resolve.
* @param pszRealPath Where to store the real path.
* @param cchRealPath Size of the buffer.
*/
/**
* Same as RTPathReal only the result is RTStrDup()'ed.
*
* @returns Pointer to real path. Use RTStrFree() to free this string.
* @returns NULL if RTPathReal() or RTStrDup() fails.
* @param pszPath The path to resolve.
*/
/**
* Get the absolute path (starts from root, no . or .. components), doesn't have
* to exist. Note that this method is designed to never perform actual file
* system access, therefore symlinks are not resolved.
*
* @returns iprt status code.
* @param pszPath The path to resolve.
* @param pszAbsPath Where to store the absolute path.
* @param cchAbsPath Size of the buffer.
*/
/**
* Same as RTPathAbs only the result is RTStrDup()'ed.
*
* @returns Pointer to the absolute path. Use RTStrFree() to free this string.
* @returns NULL if RTPathAbs() or RTStrDup() fails.
* @param pszPath The path to resolve.
*/
/**
* Get the absolute path (no symlinks, no . or .. components), assuming the
* given base path as the current directory. The resulting path doesn't have
* to exist.
*
* @returns iprt status code.
* @param pszBase The base path to act like a current directory.
* When NULL, the actual cwd is used (i.e. the call
* is equivalent to RTPathAbs(pszPath, ...).
* @param pszPath The path to resolve.
* @param pszAbsPath Where to store the absolute path.
* @param cchAbsPath Size of the buffer.
*/
RTDECL(int) RTPathAbsEx(const char *pszBase, const char *pszPath, char *pszAbsPath, size_t cchAbsPath);
/**
* Same as RTPathAbsEx only the result is RTStrDup()'ed.
*
* @returns Pointer to the absolute path. Use RTStrFree() to free this string.
* @returns NULL if RTPathAbsEx() or RTStrDup() fails.
* @param pszBase The base path to act like a current directory.
* When NULL, the actual cwd is used (i.e. the call
* is equivalent to RTPathAbs(pszPath, ...).
* @param pszPath The path to resolve.
*/
/**
* Strips the filename from a path. Truncates the given string in-place by overwriting the
* last path separator character with a null byte in a platform-neutral way.
*
* @param pszPath Path from which filename should be extracted, will be truncated.
* If the string contains no path separator, it will be changed to a "." string.
*/
/**
* Strips the extension from a path.
*
* @param pszPath Path which extension should be stripped.
*/
/**
* Strips the trailing slashes of a path name.
*
* Won't strip root slashes.
*
* @returns The new length of pszPath.
* @param pszPath Path to strip.
*/
/**
* Changes all the slashes in the specified path to DOS style.
*
* Unless @a fForce is set, nothing will be done when on a UNIX flavored system
* since paths wont work with DOS style slashes there.
*
* @returns @a pszPath.
* @param pszPath The path to modify.
* @param fForce Whether to force the conversion on non-DOS OSes.
*/
/**
* Changes all the slashes in the specified path to unix style.
*
* Unless @a fForce is set, nothing will be done when on a UNIX flavored system
* since paths wont work with DOS style slashes there.
*
* @returns @a pszPath.
* @param pszPath The path to modify.
* @param fForce Whether to force the conversion on non-DOS OSes.
*/
/**
* Simple parsing of the a path.
*
* It figures the length of the directory component, the offset of
* the file name and the location of the suffix dot.
*
* @returns The path length.
*
* @param pszPath Path to find filename in.
* @param pcchDir Where to put the length of the directory component. If
* no directory, this will be 0. Optional.
* @param poffName Where to store the filename offset.
* If empty string or if it's ending with a slash this
* will be set to -1. Optional.
* @param poffSuff Where to store the suffix offset (the last dot).
* If empty string or if it's ending with a slash this
* will be set to -1. Optional.
*/
RTDECL(size_t) RTPathParseSimple(const char *pszPath, size_t *pcchDir, ssize_t *poffName, ssize_t *poffSuff);
/**
* Finds the filename in a path.
*
* @returns Pointer to filename within pszPath.
* @returns NULL if no filename (i.e. empty string or ends with a slash).
* @param pszPath Path to find filename in.
*/
/**
* Finds the extension part of in a path.
*
* @returns Pointer to extension within pszPath.
* @returns NULL if no extension.
* @param pszPath Path to find extension in.
*/
/**
* Checks if a path has an extension.
*
* @returns true if extension present.
* @returns false if no extension.
* @param pszPath Path to check.
*/
/** Misspelled, don't use. */
#define RTPathHaveExt RTPathHasExt
/**
* Checks if a path includes more than a filename.
*
* @returns true if path present.
* @returns false if no path.
* @param pszPath Path to check.
*/
/** Misspelled, don't use. */
#define RTPathHavePath RTPathHasPath
/**
* Checks if the path starts with a root specifier or not.
*
* @returns @c true if it starts with root, @c false if not.
*
* @param pszPath Path to check.
*/
/**
* Counts the components in the specified path.
*
* An empty string has zero components. A lone root slash is considered have
* one. The paths "/init" and "/bin/" are considered having two components. An
* UNC share specifier like "\\myserver\share" will be considered as one single
* component.
*
* @returns The number of path components.
* @param pszPath The path to parse.
*/
/**
* Copies the specified number of path components from @a pszSrc and into @a
* pszDst.
*
* @returns VINF_SUCCESS or VERR_BUFFER_OVERFLOW. In the latter case the buffer
* is not touched.
*
* @param pszDst The destination buffer.
* @param cbDst The size of the destination buffer.
* @param pszSrc The source path.
* @param cComponents The number of components to copy from @a pszSrc.
*/
RTDECL(int) RTPathCopyComponents(char *pszDst, size_t cbDst, const char *pszSrc, size_t cComponents);
/** @name Path properties returned by RTPathParse and RTPathSplit.
* @{ */
/** Indicates that there is a filename.
* If not set, either a lone root spec was given (RTPATH_PROP_UNC,
* RTPATH_PROP_ROOT_SLASH, or RTPATH_PROP_VOLUME) or the final component had a
* trailing slash (RTPATH_PROP_DIR_SLASH). */
/** Indicates that a directory was specified using a trailing slash.
* @note This is not set for lone root specifications (RTPATH_PROP_UNC,
* RTPATH_PROP_ROOT_SLASH, or RTPATH_PROP_VOLUME).
* @note The slash is not counted into the last component. However, it is
* counted into cchPath. */
/** The filename has a suffix (extension). */
/** Indicates that this is an UNC path (Windows and OS/2 only).
*
* UNC = Universal Naming Convention. It is on the form '//Computer/',
* '//Namespace/', '//ComputerName/Resource' and '//Namespace/Resource'.
* RTPathParse, RTPathSplit and friends does not consider the 'Resource' as
* part of the UNC root specifier. Thus the root specs for the above examples
* would be '//ComputerName/' or '//Namespace/'.
*
* Please note that '//something' is not a UNC path, there must be a slash
* following the computer or namespace.
*/
/** A root slash was specified (unix style root).
* (While the path must relative if not set, this being set doesn't make it
* absolute.)
*
* This will be set in the following examples: '/', '/bin', 'C:/', 'C:/Windows',
* '//./', '//./PhysicalDisk0', '//example.org/', and '//example.org/share'.
*
* 'C:Windows'.
*/
/** A volume is specified (Windows, DOS and OS/2).
* For examples: 'C:', 'C:/', and 'A:/AutoExec.bat'. */
/** The path is absolute, i.e. has a root specifier (root-slash,
* volume or UNC) and contains no winding '..' bits, though it may contain
* unnecessary slashes (RTPATH_PROP_EXTRA_SLASHES) and '.' components
* (RTPATH_PROP_DOT_REFS).
*
* On systems without volumes and UNC (unix style) it will be set for '/',
*
* On systems with volumes, it will be set for 'C:/', C:/Windows', and
* 'C:/./Windows//', but not for 'C:', 'C:Windows', or 'C:/Windows/../boot.ini'.
*
* On systems with UNC paths, it will be set for '//localhost/',
* '//localhost/C$//./AutoExec.bat', but not for
* '//localhost/C$/Windows/../AutoExec.bat'.
*
* @note For the RTPathAbs definition, this flag needs to be set while both
* RTPATH_PROP_EXTRA_SLASHES and RTPATH_PROP_DOT_REFS must be cleared.
*/
/** Relative path. Inverse of RTPATH_PROP_ABSOLUTE. */
/** The path contains unnecessary slashes. Meaning, that if */
/** The path contains references to the special '.' (dot) directory link. */
/** The path contains references to the special '..' (dot) directory link.
* RTPATH_PROP_RELATIVE will always be set together with this. */
/** Macro to determin whether to insert a slash after the first component when
* joining it with something else.
* (All other components in a split or parsed path requies slashes added.) */
#define RTPATH_PROP_FIRST_NEEDS_NO_SLASH(a_fProps) \
/** Macro to determin whether there is a root specification of any kind
* (unix, volumes, unc). */
#define RTPATH_PROP_HAS_ROOT_SPEC(a_fProps) \
/** @} */
/**
* Parsed path.
*
* The first component is the root, volume or UNC specifier, if present. Use
* RTPATH_PROP_HAS_ROOT_SPEC() on RTPATHPARSED::fProps to determine its
* precense.
*
* Other than the root component, no component will include directory separators
* (slashes).
*/
typedef struct RTPATHPARSED
{
/** Number of path components.
* This will always be set on VERR_BUFFER_OVERFLOW returns from RTPathParsed
* so the caller can calculate the required buffer size. */
/** Path property flags, RTPATH_PROP_XXX */
/** On success this is the length of the described path, i.e. sum of all
* component lengths and necessary separators.
* Do NOT use this to index in the source path in case it contains
* unnecessary slashes that RTPathParsed has ignored here. */
/** Reserved for future use. */
/** The offset of the filename suffix, offset of the NUL char if none. */
/** The lenght of the suffix. */
/** Array of component descriptors (variable size).
* @note Don't try figure the end of the input path by adding up off and cch
* of the last component. If RTPATH_PROP_DIR_SLASH is set, there may
* be one or more trailing slashes that are unaccounted for! */
struct
{
/** The offset of the component. */
/** The length of the component. */
} aComps[1];
} RTPATHPARSED;
/** Pointer to to a parsed path result. */
typedef RTPATHPARSED *PRTPATHPARSED;
/** Pointer to to a const parsed path result. */
typedef RTPATHPARSED *PCRTPATHPARSED;
/**
* Parses the path.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if pParsed or pszPath is an invalid pointer.
* @retval VERR_INVALID_PARAMETER if cbOutput is less than the RTPATHPARSED
* strucuture. No output. (asserted)
* @retval VERR_BUFFER_OVERFLOW there are more components in the path than
* there is space in aComps. The required amount of space can be
* determined from the pParsed->cComps:
* @code
* RT_OFFSETOF(RTPATHPARSED, aComps[pParsed->cComps])
* @endcode
* @retval VERR_PATH_ZERO_LENGTH if the path is empty.
*
* @param pszPath The path to parse.
* @param pParsed Where to store the details of the parsed path.
* @param cbParsed The size of the buffer. Must be at least the
* size of RTPATHPARSED.
* @param fFlags Combination of RTPATH_STR_F_XXX flags.
* Most users will pass 0.
* @sa RTPathSplit, RTPathSplitA.
*/
RTDECL(int) RTPathParse(const char *pszPath, PRTPATHPARSED pParsed, size_t cbParsed, uint32_t fFlags);
/**
* Output buffer for RTPathSplit and RTPathSplitA.
*/
typedef struct RTPATHSPLIT
{
/** Number of path components.
* This will always be set on VERR_BUFFER_OVERFLOW returns from RTPathParsed
* so the caller can calculate the required buffer size. */
/** Path property flags, RTPATH_PROP_XXX */
/** On success this is the length of the described path, i.e. sum of all
* component lengths and necessary separators.
* Do NOT use this to index in the source path in case it contains
* unnecessary slashes that RTPathSplit has ignored here. */
/** Reserved (internal use). */
/** The amount of memory used (on success) or required (on
* VERR_BUFFER_OVERFLOW) of this structure and it's strings. */
/** Pointer to the filename suffix (the dot), if any. Points to the NUL
* character of the last component if none or if RTPATH_PROP_DIR_SLASH is
* present. */
const char *pszSuffix;
/** Array of component strings (variable size). */
char *apszComps[1];
} RTPATHSPLIT;
/** Pointer to a split path buffer. */
typedef RTPATHSPLIT *PRTPATHSPLIT;
/** Pointer to a const split path buffer. */
typedef RTPATHSPLIT const *PCRTPATHSPLIT;
/**
* Splits the path into individual component strings, carved from user supplied
* the given buffer block.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if pParsed or pszPath is an invalid pointer.
* @retval VERR_INVALID_PARAMETER if cbOutput is less than the RTPATHSPLIT
* strucuture. No output. (asserted)
* @retval VERR_BUFFER_OVERFLOW there are more components in the path than
* there is space in aComps. The required amount of space can be
* determined from the pParsed->cComps:
* @code
* RT_OFFSETOF(RTPATHPARSED, aComps[pParsed->cComps])
* @endcode
* @retval VERR_PATH_ZERO_LENGTH if the path is empty.
* @retval VERR_FILENAME_TOO_LONG if the filename is too long (close to 64 KB).
*
* @param pszPath The path to parse.
* @param pSplit Where to store the details of the parsed path.
* @param cbSplit The size of the buffer pointed to by @a pSplit
* (variable sized array at the end). Must be at
* least the size of RTPATHSPLIT.
* @param fFlags Combination of RTPATH_STR_F_XXX flags.
* Most users will pass 0.
*
* @sa RTPathSplitA, RTPathParse.
*/
/**
* Splits the path into individual component strings, allocating the buffer on
* the default thread heap.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if pParsed or pszPath is an invalid pointer.
* @retval VERR_PATH_ZERO_LENGTH if the path is empty.
*
* @param pszPath The path to parse.
* @param ppSplit Where to return the pointer to the output on
* success. This must be freed by calling
* RTPathSplitFree().
* @param fFlags Combination of RTPATH_STR_F_XXX flags.
* Most users will pass 0.
* @sa RTPathSplitFree, RTPathSplit, RTPathParse.
*/
#define RTPathSplitA(pszPath, ppSplit, fFlags) RTPathSplitATag(pszPath, ppSplit, fFlags, RTPATH_TAG)
/**
* Splits the path into individual component strings, allocating the buffer on
* the default thread heap.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if pParsed or pszPath is an invalid pointer.
* @retval VERR_PATH_ZERO_LENGTH if the path is empty.
*
* @param pszPath The path to parse.
* @param ppSplit Where to return the pointer to the output on
* success. This must be freed by calling
* RTPathSplitFree().
* @param fFlags Combination of RTPATH_STR_F_XXX flags.
* Most users will pass 0.
* @param pszTag Allocation tag used for statistics and such.
* @sa RTPathSplitFree, RTPathSplit, RTPathParse.
*/
RTDECL(int) RTPathSplitATag(const char *pszPath, PRTPATHSPLIT *ppSplit, uint32_t fFlags, const char *pszTag);
/**
* Frees buffer returned by RTPathSplitA.
*
* @param pSplit What RTPathSplitA returned.
* @sa RTPathSplitA
*/
/**
* Compares two paths.
*
* The comparison takes platform-dependent details into account,
* such as:
* <ul>
* <li>On DOS-like platforms, both separator chars (|\| and |/|) are considered
* to be equal.
* <li>On platforms with case-insensitive file systems, mismatching characters
* are uppercased and compared again.
* </ul>
*
* @returns @< 0 if the first path less than the second path.
* @returns 0 if the first path identical to the second path.
* @returns @> 0 if the first path greater than the second path.
*
* @param pszPath1 Path to compare (must be an absolute path).
* @param pszPath2 Path to compare (must be an absolute path).
*
* @remarks File system details are currently ignored. This means that you won't
* get case-insensitive compares on unix systems when a path goes into a
* case-insensitive filesystem like FAT, HPFS, HFS, NTFS, JFS, or
* similar. For NT, OS/2 and similar you'll won't get case-sensitive
* compares on a case-sensitive file system.
*/
/**
* Checks if a path starts with the given parent path.
*
* This means that either the path and the parent path matches completely, or
* that the path is to some file or directory residing in the tree given by the
* parent directory.
*
* The path comparison takes platform-dependent details into account,
* see RTPathCompare() for details.
*
* @returns |true| when \a pszPath starts with \a pszParentPath (or when they
* are identical), or |false| otherwise.
*
* @param pszPath Path to check, must be an absolute path.
* @param pszParentPath Parent path, must be an absolute path.
* No trailing directory slash!
*
* @remarks This API doesn't currently handle root directory compares in a
* manner consistent with the other APIs. RTPathStartsWith(pszSomePath,
* "/") will not work if pszSomePath isn't "/".
*/
/**
* Appends one partial path to another.
*
* The main purpose of this function is to deal correctly with the slashes when
* concatenating the two partial paths.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the result is too big to fit within
* cbPathDst bytes. No changes has been made.
* @retval VERR_INVALID_PARAMETER if the string pointed to by pszPath is longer
* than cbPathDst-1 bytes (failed to find terminator). Asserted.
*
* @param pszPath The path to append pszAppend to. This serves as both
* input and output. This can be empty, in which case
* pszAppend is just copied over.
* @param cbPathDst The size of the buffer pszPath points to, terminator
* included. This should NOT be strlen(pszPath).
* @param pszAppend The partial path to append to pszPath. This can be
* NULL, in which case nothing is done.
*
* @remarks See the RTPathAppendEx remarks.
*/
/**
* Appends one partial path to another.
*
* The main purpose of this function is to deal correctly with the slashes when
* concatenating the two partial paths.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the result is too big to fit within
* cbPathDst bytes. No changes has been made.
* @retval VERR_INVALID_PARAMETER if the string pointed to by pszPath is longer
* than cbPathDst-1 bytes (failed to find terminator). Asserted.
*
* @param pszPath The path to append pszAppend to. This serves as both
* input and output. This can be empty, in which case
* pszAppend is just copied over.
* @param cbPathDst The size of the buffer pszPath points to, terminator
* included. This should NOT be strlen(pszPath).
* @param pszAppend The partial path to append to pszPath. This can be
* NULL, in which case nothing is done.
* @param cchAppendMax The maximum number or characters to take from @a
* pszAppend. RTSTR_MAX is fine.
*
* @remarks On OS/2, Window and similar systems, concatenating a drive letter
* specifier with a slash prefixed path will result in an absolute
* path. Meaning, RTPathAppend(strcpy(szBuf, "C:"), sizeof(szBuf),
* "/bar") will result in "C:/bar". (This follows directly from the
* behavior when pszPath is empty.)
*
* On the other hand, when joining a drive letter specifier with a
* partial path that does not start with a slash, the result is not an
* absolute path. Meaning, RTPathAppend(strcpy(szBuf, "C:"),
* sizeof(szBuf), "bar") will result in "C:bar".
*/
RTDECL(int) RTPathAppendEx(char *pszPath, size_t cbPathDst, const char *pszAppend, size_t cchAppendMax);
/**
* Like RTPathAppend, but with the base path as a separate argument instead of
* in the path buffer.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the result is too big to fit within
* cbPathDst bytes.
* @retval VERR_INVALID_PARAMETER if the string pointed to by pszPath is longer
* than cbPathDst-1 bytes (failed to find terminator). Asserted.
*
* @param pszPathDst Where to store the resulting path.
* @param cbPathDst The size of the buffer pszPathDst points to,
* terminator included.
* @param pszPathSrc The base path to copy into @a pszPathDst before
* appending @a pszAppend.
* @param pszAppend The partial path to append to pszPathSrc. This can
* be NULL, in which case nothing is done.
*
*/
const char *pszAppend);
/**
* Same as RTPathJoin, except that the output buffer is allocated.
*
* @returns Buffer containing the joined up path, call RTStrFree to free. NULL
* on allocation failure.
* @param pszPathSrc The base path to copy into @a pszPathDst before
* appending @a pszAppend.
* @param pszAppend The partial path to append to pszPathSrc. This can
* be NULL, in which case nothing is done.
*
*/
/**
* Extended version of RTPathJoin, both inputs can be specified as substrings.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the result is too big to fit within
* cbPathDst bytes.
* @retval VERR_INVALID_PARAMETER if the string pointed to by pszPath is longer
* than cbPathDst-1 bytes (failed to find terminator). Asserted.
*
* @param pszPathDst Where to store the resulting path.
* @param cbPathDst The size of the buffer pszPathDst points to,
* terminator included.
* @param pszPathSrc The base path to copy into @a pszPathDst before
* appending @a pszAppend.
* @param cchPathSrcMax The maximum number of bytes to copy from @a
* pszPathSrc. RTSTR_MAX is find.
* @param pszAppend The partial path to append to pszPathSrc. This can
* be NULL, in which case nothing is done.
* @param cchAppendMax The maximum number of bytes to copy from @a
* pszAppend. RTSTR_MAX is find.
*
*/
/**
* Callback for RTPathTraverseList that's called for each element.
*
* @returns IPRT style status code. Return VERR_TRY_AGAIN to continue, any other
* value will abort the traversing and be returned to the caller.
*
* @param pchPath Pointer to the start of the current path. This is
* not null terminated.
* @param cchPath The length of the path.
* @param pvUser1 The first user parameter.
* @param pvUser2 The second user parameter.
*/
typedef DECLCALLBACK(int) FNRTPATHTRAVERSER(char const *pchPath, size_t cchPath, void *pvUser1, void *pvUser2);
/** Pointer to a FNRTPATHTRAVERSER. */
typedef FNRTPATHTRAVERSER *PFNRTPATHTRAVERSER;
/**
* Traverses a string that can contain multiple paths separated by a special
* character.
*
* @returns IPRT style status code from the callback or VERR_END_OF_STRING if
* the callback returned VERR_TRY_AGAIN for all paths in the string.
*
* @param pszPathList The string to traverse.
* @param chSep The separator character. Using the null terminator
* is fine, but the result will simply be that there
* will only be one callback for the entire string
* (save any leading white space).
* @param pfnCallback The callback.
* @param pvUser1 First user argument for the callback.
* @param pvUser2 Second user argument for the callback.
*/
RTDECL(int) RTPathTraverseList(const char *pszPathList, char chSep, PFNRTPATHTRAVERSER pfnCallback, void *pvUser1, void *pvUser2);
/**
* Calculate a relative path between the two given paths.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the result is too big to fit within
* cbPathDst bytes.
* @retval VERR_NOT_SUPPORTED if both paths start with different volume specifiers.
* @param pszPathDst Where to store the resulting path.
* @param cbPathDst The size of the buffer pszPathDst points to,
* terminator included.
* @param pszPathFrom The path to start from creating the relative path.
* @param pszPathTo The path to reach with the created relative path.
*/
const char *pszPathFrom,
const char *pszPathTo);
#ifdef IN_RING3
/**
* Gets the path to the directory containing the executable.
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the user home directory.
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the user documents directory.
*
* The returned path isn't guaranteed to exist.
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the directory of shared libraries.
*
* This is not the same as RTPathAppPrivateArch() as Linux depends all shared
* libraries in a common global directory where ld.so can find them.
*
* Solaris: /opt/@<application@>/@<arch>@ or something
* Windows: @<program files directory@>/@<application@>
* Old path: same as RTPathExecDir()
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the directory for architecture-independent application data, for
* example NLS files, module sources, ...
*
* Solaris: /opt/@<application@>
* Windows: @<program files directory@>/@<application@>
* Old path: same as RTPathExecDir()
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the directory for architecture-dependent application data, for
* example modules which can be loaded at runtime.
*
* Solaris: /opt/@<application@>/@<arch>@ or something
* Windows: @<program files directory@>/@<application@>
* Old path: same as RTPathExecDir()
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the toplevel directory for architecture-dependent application data.
*
* This differs from RTPathAppPrivateArch on Solaris only where it will work
* around the /opt/@<application@>/amd64 and /opt/@<application@>/i386 multi
* architecture installation style.
*
* Solaris: /opt/@<application@>
* Windows: @<program files directory@>/@<application@>
* Old path: same as RTPathExecDir()
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the directory for documentation.
*
* Solaris: /opt/@<application@>
* Windows: @<program files directory@>/@<application@>
* Old path: same as RTPathExecDir()
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Gets the temporary directory path.
*
* @returns iprt status code.
* @param pszPath Buffer where to store the path.
* @param cchPath Buffer size in bytes.
*/
/**
* Query information about a file system object.
*
* This API will resolve NOT symbolic links in the last component (just like
* unix lstat()).
*
* @returns IPRT status code.
* @retval VINF_SUCCESS if the object exists, information returned.
* @retval VERR_PATH_NOT_FOUND if any but the last component in the specified
* path was not found or was not a directory.
* @retval VERR_FILE_NOT_FOUND if the object does not exist (but path to the
* parent directory exists).
*
* @param pszPath Path to the file system object.
* @param pObjInfo Object information structure to be filled on successful
* return.
* @param enmAdditionalAttribs
* Which set of additional attributes to request.
* Use RTFSOBJATTRADD_NOTHING if this doesn't matter.
*/
RTR3DECL(int) RTPathQueryInfo(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs);
/**
* Query information about a file system object.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS if the object exists, information returned.
* @retval VERR_PATH_NOT_FOUND if any but the last component in the specified
* path was not found or was not a directory.
* @retval VERR_FILE_NOT_FOUND if the object does not exist (but path to the
* parent directory exists).
*
* @param pszPath Path to the file system object.
* @param pObjInfo Object information structure to be filled on successful return.
* @param enmAdditionalAttribs
* Which set of additional attributes to request.
* Use RTFSOBJATTRADD_NOTHING if this doesn't matter.
* @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK.
*/
RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags);
/**
* Changes the mode flags of a file system object.
*
* be set. The type is ignored.
*
* This API will resolve symbolic links in the last component since
* mode isn't important for symbolic links.
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param fMode The new file mode, see @ref grp_rt_fs for details.
*/
/**
* Gets the mode flags of a file system object.
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param pfMode Where to store the file mode, see @ref grp_rt_fs for details.
*
* @remark This is wrapper around RTPathQueryInfoEx(RTPATH_F_FOLLOW_LINK) and
* exists to complement RTPathSetMode().
*/
/**
* Changes one or more of the timestamps associated of file system object.
*
* This API will not resolve symbolic links in the last component (just
* like unix lutimes()).
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param pAccessTime Pointer to the new access time.
* @param pModificationTime Pointer to the new modification time.
* @param pChangeTime Pointer to the new change time. NULL if not to be changed.
* @param pBirthTime Pointer to the new time of birth. NULL if not to be changed.
*
* @remark The file system might not implement all these time attributes,
* the API will ignore the ones which aren't supported.
*
* @remark The file system might not implement the time resolution
* employed by this interface, the time will be chopped to fit.
*
* @remark The file system may update the change time even if it's
* not specified.
*
* @remark POSIX can only set Access & Modification and will always set both.
*/
RTR3DECL(int) RTPathSetTimes(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
/**
* Changes one or more of the timestamps associated of file system object.
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param pAccessTime Pointer to the new access time.
* @param pModificationTime Pointer to the new modification time.
* @param pChangeTime Pointer to the new change time. NULL if not to be changed.
* @param pBirthTime Pointer to the new time of birth. NULL if not to be changed.
* @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK.
*
* @remark The file system might not implement all these time attributes,
* the API will ignore the ones which aren't supported.
*
* @remark The file system might not implement the time resolution
* employed by this interface, the time will be chopped to fit.
*
* @remark The file system may update the change time even if it's
* not specified.
*
* @remark POSIX can only set Access & Modification and will always set both.
*/
RTR3DECL(int) RTPathSetTimesEx(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
/**
* Gets one or more of the timestamps associated of file system object.
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param pAccessTime Where to store the access time. NULL is ok.
* @param pModificationTime Where to store the modification time. NULL is ok.
* @param pChangeTime Where to store the change time. NULL is ok.
* @param pBirthTime Where to store the creation time. NULL is ok.
*
* @remark This is wrapper around RTPathQueryInfo() and exists to complement
* RTPathSetTimes(). If the last component is a symbolic link, it will
* not be resolved.
*/
RTR3DECL(int) RTPathGetTimes(const char *pszPath, PRTTIMESPEC pAccessTime, PRTTIMESPEC pModificationTime,
/**
*
* This API will not resolve symbolic links in the last component (just
* like unix lchown()).
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param uid The new file owner user id. Pass NIL_RTUID to leave
* this unchanged.
* @param gid The new group id. Pass NIL_RTGUID to leave this
* unchanged.
*/
/**
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param uid The new file owner user id. Pass NIL_RTUID to leave
* this unchanged.
* @param gid The new group id. Pass NIL_RTGID to leave this
* unchanged.
* @param fFlags RTPATH_F_ON_LINK or RTPATH_F_FOLLOW_LINK.
*/
/**
*
* @returns iprt status code.
* @param pszPath Path to the file system object.
* @param pUid Where to store the owner user id. NULL is ok.
* @param pGid Where to store the group id. NULL is ok.
*
* @remark This is wrapper around RTPathQueryInfo() and exists to complement
* RTPathGetOwner(). If the last component is a symbolic link, it will
* not be resolved.
*/
/** @name RTPathRename, RTDirRename & RTFileRename flags.
* @{ */
/** Do not replace anything. */
#define RTPATHRENAME_FLAGS_NO_REPLACE UINT32_C(0)
/** This will replace attempt any target which isn't a directory. */
#define RTPATHRENAME_FLAGS_REPLACE RT_BIT(0)
/** Don't allow symbolic links as part of the path.
* @remarks this flag is currently not implemented and will be ignored. */
/** @} */
/**
* Renames a path within a filesystem.
*
* This will rename symbolic links. If RTPATHRENAME_FLAGS_REPLACE is used and
* pszDst is a symbolic link, it will be replaced and not its target.
*
* @returns IPRT status code.
* @param pszSrc The source path.
* @param pszDst The destination path.
* @param fRename Rename flags, RTPATHRENAME_FLAGS_*.
*/
/** @name RTPathUnlink flags.
* @{ */
/** Don't allow symbolic links as part of the path.
* @remarks this flag is currently not implemented and will be ignored. */
#define RTPATHUNLINK_FLAGS_NO_SYMLINKS RT_BIT(0)
/** @} */
/**
* Removes the last component of the path.
*
* @returns IPRT status code.
* @param pszPath The path.
* @param fUnlink Unlink flags, RTPATHUNLINK_FLAGS_*.
*/
/**
*
* @returns Program exit code.
*
* @param cArgs The number of arguments.
* @param papszArgs The argument vector. (Note that this may be
* reordered, so the memory must be writable.)
*/
#endif /* IN_RING3 */
/** @} */
#endif