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86 lines
4.1 KiB
C
86 lines
4.1 KiB
C
// Directory utilities. This library contains functions for locating configuration directories, for
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// testing if a command with a given name can be found in the PATH, and various other path-related
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// issues.
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#ifndef FISH_PATH_H
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#define FISH_PATH_H
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#include <stddef.h>
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#include "common.h"
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#include "env.h"
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/// Return value for path_cdpath_get when locatied a rotten symlink.
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#define EROTTEN 1
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/// Returns the user configuration directory for fish. If the directory or one of its parents
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/// doesn't exist, they are first created.
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///
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/// \param path The directory as an out param
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/// \return whether the directory was returned successfully
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bool path_get_config(wcstring &path);
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/// Returns the user data directory for fish. If the directory or one of its parents doesn't exist,
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/// they are first created.
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///
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/// Volatile files presumed to be local to the machine, such as the fish_history and all the
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/// generated_completions, will be stored in this directory.
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///
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/// \param path The directory as an out param
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/// \return whether the directory was returned successfully
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bool path_get_data(wcstring &path);
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/// Finds the full path of an executable. Returns YES if successful.
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///
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/// \param cmd The name of the executable.
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/// \param output_or_NULL If non-NULL, store the full path.
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/// \param vars The environment variables snapshot to use
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/// \return 0 if the command can not be found, the path of the command otherwise. The result should
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/// be freed with free().
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bool path_get_path(const wcstring &cmd, wcstring *output_or_NULL,
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const env_vars_snapshot_t &vars = env_vars_snapshot_t::current());
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/// Returns the full path of the specified directory, using the CDPATH variable as a list of base
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/// directories for relative paths. The returned string is allocated using halloc and the specified
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/// context.
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///
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/// If no valid path is found, null is returned and errno is set to ENOTDIR if at least one such
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/// path was found, but it did not point to a directory, EROTTEN if a arotten symbolic link was
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/// found, or ENOENT if no file of the specified name was found. If both a rotten symlink and a file
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/// are found, it is undefined which error status will be returned.
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///
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/// \param dir The name of the directory.
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/// \param out_or_NULL If non-NULL, return the path to the resolved directory
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/// \param wd The working directory, or NULL to use the default. The working directory should have a
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/// slash appended at the end.
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/// \param vars The environment variable snapshot to use (for the CDPATH variable)
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/// \return 0 if the command can not be found, the path of the command otherwise. The path should be
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/// free'd with free().
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bool path_get_cdpath(const wcstring &dir, wcstring *out_or_NULL, const wchar_t *wd = NULL,
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const env_vars_snapshot_t &vars = env_vars_snapshot_t::current());
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/// Returns whether the path can be used for an implicit cd command; if so, also returns the path by
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/// reference (if desired). This requires it to start with one of the allowed prefixes (., .., ~)
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/// and resolve to a directory.
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bool path_can_be_implicit_cd(const wcstring &path, wcstring *out_path = NULL,
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const wchar_t *wd = NULL,
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const env_vars_snapshot_t &vars = env_vars_snapshot_t::current());
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/// Remove double slashes and trailing slashes from a path, e.g. transform foo//bar/ into foo/bar.
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/// The string is modified in-place.
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void path_make_canonical(wcstring &path);
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/// Check if two paths are equivalent, which means to ignore runs of multiple slashes (or trailing
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/// slashes).
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bool paths_are_equivalent(const wcstring &p1, const wcstring &p2);
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bool path_is_valid(const wcstring &path, const wcstring &working_directory);
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/// Returns whether the two paths refer to the same file.
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bool paths_are_same_file(const wcstring &path1, const wcstring &path2);
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/// If the given path looks like it's relative to the working directory, then prepend that working
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/// directory. This operates on unescaped paths only (so a ~ means a literal ~).
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wcstring path_apply_working_directory(const wcstring &path, const wcstring &working_directory);
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#endif
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