Copyright | Will Thompson and Iñaki García Etxebarria |
---|---|
License | LGPL-2.1 |
Maintainer | Iñaki García Etxebarria |
Safe Haskell | Safe-Inferred |
Language | Haskell2010 |
GPathBuf
is a helper type that allows you to easily build paths from
individual elements, using the platform specific conventions for path
separators.
C code
g_auto (GPathBuf) path; g_path_buf_init (&path); g_path_buf_push (&path, "usr"); g_path_buf_push (&path, "bin"); g_path_buf_push (&path, "echo"); g_autofree char *echo = g_path_buf_to_path (&path); g_assert_cmpstr (echo, ==, "/usr/bin/echo");
You can also load a full path and then operate on its components:
C code
g_auto (GPathBuf) path; g_path_buf_init_from_path (&path, "/usr/bin/echo"); g_path_buf_pop (&path); g_path_buf_push (&path, "sh"); g_autofree char *sh = g_path_buf_to_path (&path); g_assert_cmpstr (sh, ==, "/usr/bin/sh");
GPathBuf
is available since GLib 2.76.
Since: 2.76
Synopsis
- newtype PathBuf = PathBuf (ManagedPtr PathBuf)
- newZeroPathBuf :: MonadIO m => m PathBuf
- pathBufClear :: (HasCallStack, MonadIO m) => PathBuf -> m ()
- pathBufClearToPath :: (HasCallStack, MonadIO m) => PathBuf -> m (Maybe [Char])
- pathBufEqual :: (HasCallStack, MonadIO m) => Ptr () -> Ptr () -> m Bool
- pathBufFree :: (HasCallStack, MonadIO m) => PathBuf -> m ()
- pathBufFreeToPath :: (HasCallStack, MonadIO m) => PathBuf -> m (Maybe [Char])
- pathBufInit :: (HasCallStack, MonadIO m) => PathBuf -> m PathBuf
- pathBufInitFromPath :: (HasCallStack, MonadIO m) => PathBuf -> Maybe [Char] -> m PathBuf
- pathBufPop :: (HasCallStack, MonadIO m) => PathBuf -> m Bool
- pathBufPush :: (HasCallStack, MonadIO m) => PathBuf -> [Char] -> m PathBuf
- pathBufSetExtension :: (HasCallStack, MonadIO m) => PathBuf -> Maybe [Char] -> m Bool
- pathBufSetFilename :: (HasCallStack, MonadIO m) => PathBuf -> [Char] -> m Bool
- pathBufToPath :: (HasCallStack, MonadIO m) => PathBuf -> m (Maybe [Char])
Exported types
Memory-managed wrapper type.
Instances
Eq PathBuf Source # | |
BoxedPtr PathBuf Source # | |
Defined in GI.GLib.Structs.PathBuf boxedPtrCopy :: PathBuf -> IO PathBuf boxedPtrFree :: PathBuf -> IO () | |
CallocPtr PathBuf Source # | |
Defined in GI.GLib.Structs.PathBuf boxedPtrCalloc :: IO (Ptr PathBuf) | |
ManagedPtrNewtype PathBuf Source # | |
Defined in GI.GLib.Structs.PathBuf toManagedPtr :: PathBuf -> ManagedPtr PathBuf | |
tag ~ 'AttrSet => Constructible PathBuf tag Source # | |
Methods
Click to display all available methods, including inherited ones
Methods
clear, clearToPath, free, freeToPath, init, initFromPath, pop, push, toPath.
Getters
None.
Setters
clear
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m () |
Clears the contents of the path buffer.
This function should be use to free the resources in a stack-allocated
GPathBuf
initialized using pathBufInit
or
pathBufInitFromPath
.
Since: 2.76
clearToPath
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m (Maybe [Char]) | Returns: the built path |
Clears the contents of the path buffer and returns the built path.
This function returns NULL
if the GPathBuf
is empty.
See also: pathBufToPath
Since: 2.76
equal
:: (HasCallStack, MonadIO m) | |
=> Ptr () |
|
-> Ptr () |
|
-> m Bool | Returns: |
Compares two path buffers for equality and returns TRUE
if they are equal.
The path inside the paths buffers are not going to be normalized,
so X/Y/Z/A/..
, X/./Y/Z
and X/Y/Z
are not going to be considered
equal.
This function can be passed to g_hash_table_new()
as the
key_equal_func
parameter.
Since: 2.76
free
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m () |
Frees a GPathBuf
allocated by g_path_buf_new()
.
Since: 2.76
freeToPath
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m (Maybe [Char]) | Returns: the path |
Frees a GPathBuf
allocated by g_path_buf_new()
, and
returns the path inside the buffer.
This function returns NULL
if the GPathBuf
is empty.
See also: pathBufToPath
Since: 2.76
init
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m PathBuf | Returns: the initialized path builder |
Initializes a GPathBuf
instance.
Since: 2.76
initFromPath
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> Maybe [Char] |
|
-> m PathBuf | Returns: the initialized path builder |
Initializes a GPathBuf
instance with the given path.
Since: 2.76
pop
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m Bool | Returns: |
Removes the last element of the path buffer.
If there is only one element in the path buffer (for example, /
on
Unix-like operating systems or the drive on Windows systems), it will
not be removed and False
will be returned instead.
C code
GPathBuf buf, cmp; g_path_buf_init_from_path (&buf, "/bin/sh"); g_path_buf_pop (&buf); g_path_buf_init_from_path (&cmp, "/bin"); g_assert_true (g_path_buf_equal (&buf, &cmp)); g_path_buf_clear (&cmp); g_path_buf_pop (&buf); g_path_buf_init_from_path (&cmp, "/"); g_assert_true (g_path_buf_equal (&buf, &cmp)); g_path_buf_clear (&cmp); g_path_buf_clear (&buf);
Since: 2.76
push
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> [Char] |
|
-> m PathBuf | Returns: the same pointer to |
Extends the given path buffer with path
.
If path
is absolute, it replaces the current path.
If path
contains a directory separator, the buffer is extended by
as many elements the path provides.
On Windows, both forward slashes and backslashes are treated as
directory separators. On other platforms, DIR_SEPARATOR_S
is the
only directory separator.
C code
GPathBuf buf, cmp; g_path_buf_init_from_path (&buf, "/tmp"); g_path_buf_push (&buf, ".X11-unix/X0"); g_path_buf_init_from_path (&cmp, "/tmp/.X11-unix/X0"); g_assert_true (g_path_buf_equal (&buf, &cmp)); g_path_buf_clear (&cmp); g_path_buf_push (&buf, "/etc/locale.conf"); g_path_buf_init_from_path (&cmp, "/etc/locale.conf"); g_assert_true (g_path_buf_equal (&buf, &cmp)); g_path_buf_clear (&cmp); g_path_buf_clear (&buf);
Since: 2.76
setExtension
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> Maybe [Char] |
|
-> m Bool | Returns: |
Adds an extension to the file name in the path buffer.
If extension
is NULL
, the extension will be unset.
If the path buffer does not have a file name set, this function returns
FALSE
and leaves the path buffer unmodified.
Since: 2.76
setFilename
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> [Char] |
|
-> m Bool | Returns: |
Sets the file name of the path.
If the path buffer is empty, the filename is left unset and this
function returns FALSE
.
If the path buffer only contains the root element (on Unix-like operating
systems) or the drive (on Windows), this is the equivalent of pushing
the new fileName
.
If the path buffer contains a path, this is the equivalent of
popping the path buffer and pushing fileName
, creating a
sibling of the original path.
C code
GPathBuf buf, cmp; g_path_buf_init_from_path (&buf, "/"); g_path_buf_set_filename (&buf, "bar"); g_path_buf_init_from_path (&cmp, "/bar"); g_assert_true (g_path_buf_equal (&buf, &cmp)); g_path_buf_clear (&cmp); g_path_buf_set_filename (&buf, "baz.txt"); g_path_buf_init_from_path (&cmp, "/baz.txt"); g_assert_true (g_path_buf_equal (&buf, &cmp); g_path_buf_clear (&cmp); g_path_buf_clear (&buf);
Since: 2.76
toPath
:: (HasCallStack, MonadIO m) | |
=> PathBuf |
|
-> m (Maybe [Char]) | Returns: the path |
Retrieves the built path from the path buffer.
On Windows, the result contains backslashes as directory separators, even if forward slashes were used in input.
If the path buffer is empty, this function returns NULL
.
Since: 2.76