fish-shell/src/wildcard.h
2020-02-29 15:56:52 -08:00

74 lines
3.1 KiB
C++

// My own globbing implementation. Needed to implement this instead of using libs globbing to
// support tab-expansion of globbed parameters.
#ifndef FISH_WILDCARD_H
#define FISH_WILDCARD_H
#include <vector>
#include "common.h"
#include "complete.h"
#include "expand.h"
// Enumeration of all wildcard types.
enum {
/// Character representing any character except '/' (slash).
ANY_CHAR = WILDCARD_RESERVED_BASE,
/// Character representing any character string not containing '/' (slash).
ANY_STRING,
/// Character representing any character string.
ANY_STRING_RECURSIVE,
/// This is a special pseudo-char that is not used other than to mark the
/// end of the the special characters so we can sanity check the enum range.
ANY_SENTINEL
};
/// Expand the wildcard by matching against the filesystem.
///
/// New strings are allocated using malloc and should be freed by the caller.
///
/// wildcard_expand works by dividing the wildcard into segments at each directory boundary. Each
/// segment is processed separatly. All except the last segment are handled by matching the wildcard
/// segment against all subdirectories of matching directories, and recursively calling
/// wildcard_expand for matches. On the last segment, matching is made to any file, and all matches
/// are inserted to the list.
///
/// If wildcard_expand encounters any errors (such as insufficient privileges) during matching, no
/// error messages will be printed and wildcard_expand will continue the matching process.
///
/// \param wc The wildcard string
/// \param working_directory The working directory
/// \param flags flags for the search. Can be any combination of for_completions and
/// executables_only
/// \param out The list in which to put the output
///
enum class wildcard_expand_result_t {
no_match, /// The wildcard did not match.
match, /// The wildcard did match.
cancel, /// Expansion was cancelled (e.g. control-C).
};
wildcard_expand_result_t wildcard_expand_string(const wcstring &wc,
const wcstring &working_directory,
expand_flags_t flags,
const cancel_checker_t &cancel_checker,
completion_list_t *out);
/// Test whether the given wildcard matches the string. Does not perform any I/O.
///
/// \param str The string to test
/// \param wc The wildcard to test against
/// \param leading_dots_fail_to_match if set, strings with leading dots are assumed to be hidden
/// files and are not matched
///
/// \return true if the wildcard matched
bool wildcard_match(const wcstring &str, const wcstring &wc,
bool leading_dots_fail_to_match = false);
/// Check if the specified string contains wildcards.
bool wildcard_has(const wcstring &, bool internal);
bool wildcard_has(const wchar_t *, bool internal);
/// Test wildcard completion.
bool wildcard_complete(const wcstring &str, const wchar_t *wc, const description_func_t &desc_func,
completion_list_t *out, expand_flags_t expand_flags, complete_flags_t flags);
#endif