/*
 * Copyright (C) the libgit2 contributors. All rights reserved.
 *
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
 */
module libgit2_d.pathspec;


private static import libgit2_d.diff;
private static import libgit2_d.strarray;
private static import libgit2_d.types;

extern (C):
nothrow @nogc:
public:

/**
 * Compiled pathspec
 */
struct git_pathspec;

/**
 * List of filenames matching a pathspec
 */
struct git_pathspec_match_list;

/**
 * Options controlling how pathspec match should be executed
 */
enum git_pathspec_flag_t
{
	GIT_PATHSPEC_DEFAULT = 0,

	/**
	 * GIT_PATHSPEC_IGNORE_CASE forces match to ignore case; otherwise
	 * match will use native case sensitivity of platform filesystem
	 */
	GIT_PATHSPEC_IGNORE_CASE = 1u << 0,

	/**
	 * GIT_PATHSPEC_USE_CASE forces case sensitive match; otherwise
	 * match will use native case sensitivity of platform filesystem
	 */
	GIT_PATHSPEC_USE_CASE = 1u << 1,

	/**
	 * GIT_PATHSPEC_NO_GLOB disables glob patterns and just uses simple
	 * string comparison for matching
	 */
	GIT_PATHSPEC_NO_GLOB = 1u << 2,

	/**
	 * GIT_PATHSPEC_NO_MATCH_ERROR means the match functions return error
	 * code GIT_ENOTFOUND if no matches are found; otherwise no matches is
	 * still success (return 0) but `git_pathspec_match_list_entrycount`
	 * will indicate 0 matches.
	 */
	GIT_PATHSPEC_NO_MATCH_ERROR = 1u << 3,

	/**
	 * GIT_PATHSPEC_FIND_FAILURES means that the `git_pathspec_match_list`
	 * should track which patterns matched which files so that at the end of
	 * the match we can identify patterns that did not match any files.
	 */
	GIT_PATHSPEC_FIND_FAILURES = 1u << 4,

	/**
	 * GIT_PATHSPEC_FAILURES_ONLY means that the `git_pathspec_match_list`
	 * does not need to keep the actual matching filenames.  Use this to
	 * just test if there were any matches at all or in combination with
	 * GIT_PATHSPEC_FIND_FAILURES to validate a pathspec.
	 */
	GIT_PATHSPEC_FAILURES_ONLY = 1u << 5,
}

/**
 * Compile a pathspec
 *
 * Params:
 *      out_ = Output of the compiled pathspec
 *      pathspec = A git_strarray of the paths to match
 *
 * Returns: 0 on success, <0 on failure
 */
//GIT_EXTERN
int git_pathspec_new(.git_pathspec** out_, const (libgit2_d.strarray.git_strarray)* pathspec);

/**
 * Free a pathspec
 *
 * Params:
 *      ps = The compiled pathspec
 */
//GIT_EXTERN
void git_pathspec_free(.git_pathspec* ps);

/**
 * Try to match a path against a pathspec
 *
 * Unlike most of the other pathspec matching functions, this will not
 * fall back on the native case-sensitivity for your platform.  You must
 * explicitly pass flags to control case sensitivity or else this will
 * fall back on being case sensitive.
 *
 * Params:
 *      ps = The compiled pathspec
 *      flags = Combination of git_pathspec_flag_t options to control match
 *      path = The pathname to attempt to match
 *
 * Returns: 1 is path matches spec, 0 if it does not
 */
//GIT_EXTERN
int git_pathspec_matches_path(const (.git_pathspec)* ps, uint flags, const (char)* path);

/**
 * Match a pathspec against the working directory of a repository.
 *
 * This matches the pathspec against the current files in the working
 * directory of the repository.  It is an error to invoke this on a bare
 * repo.  This handles git ignores (i.e. ignored files will not be
 * considered to match the `pathspec` unless the file is tracked in the
 * index).
 *
 * If `out` is not null, this returns a `git_patchspec_match_list`.  That
 * contains the list of all matched filenames (unless you pass the
 * `git_pathspec_flag_t.GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
 * pathspecs with no match (if you used the `git_pathspec_flag_t.GIT_PATHSPEC_FIND_FAILURES`
 * flag).  You must call `git_pathspec_match_list_free()` on this object.
 *
 * Params:
 *      out_ = Output list of matches; pass null to just get return value
 *      repo = The repository in which to match; bare repo is an error
 *      flags = Combination of git_pathspec_flag_t options to control match
 *      ps = Pathspec to be matched
 *
 * Returns: 0 on success, -1 on error, git_error_code.GIT_ENOTFOUND if no matches and the git_pathspec_flag_t.GIT_PATHSPEC_NO_MATCH_ERROR flag was given
 */
//GIT_EXTERN
int git_pathspec_match_workdir(.git_pathspec_match_list** out_, libgit2_d.types.git_repository* repo, uint flags, .git_pathspec* ps);

/**
 * Match a pathspec against entries in an index.
 *
 * This matches the pathspec against the files in the repository index.
 *
 * NOTE: At the moment, the case sensitivity of this match is controlled
 * by the current case-sensitivity of the index object itself and the
 * USE_CASE and IGNORE_CASE flags will have no effect.  This behavior will
 * be corrected in a future release.
 *
 * If `out` is not null, this returns a `git_patchspec_match_list`.  That
 * contains the list of all matched filenames (unless you pass the
 * `git_pathspec_flag_t.GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
 * pathspecs with no match (if you used the `git_pathspec_flag_t.GIT_PATHSPEC_FIND_FAILURES`
 * flag).  You must call `git_pathspec_match_list_free()` on this object.
 *
 * Params:
 *      out_ = Output list of matches; pass null to just get return value
 *      index = The index to match against
 *      flags = Combination of git_pathspec_flag_t options to control match
 *      ps = Pathspec to be matched
 *
 * Returns: 0 on success, -1 on error, git_error_code.GIT_ENOTFOUND if no matches and the git_pathspec_flag_t.GIT_PATHSPEC_NO_MATCH_ERROR flag is used
 */
//GIT_EXTERN
int git_pathspec_match_index(.git_pathspec_match_list** out_, libgit2_d.types.git_index* index, uint flags, .git_pathspec* ps);

/**
 * Match a pathspec against files in a tree.
 *
 * This matches the pathspec against the files in the given tree.
 *
 * If `out` is not null, this returns a `git_patchspec_match_list`.  That
 * contains the list of all matched filenames (unless you pass the
 * `git_pathspec_flag_t.GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
 * pathspecs with no match (if you used the `git_pathspec_flag_t.GIT_PATHSPEC_FIND_FAILURES`
 * flag).  You must call `git_pathspec_match_list_free()` on this object.
 *
 * Params:
 *      out_ = Output list of matches; pass null to just get return value
 *      tree = The root-level tree to match against
 *      flags = Combination of git_pathspec_flag_t options to control match
 *      ps = Pathspec to be matched
 *
 * Returns: 0 on success, -1 on error, git_error_code.GIT_ENOTFOUND if no matches and the git_pathspec_flag_t.GIT_PATHSPEC_NO_MATCH_ERROR flag is used
 */
//GIT_EXTERN
int git_pathspec_match_tree(.git_pathspec_match_list** out_, libgit2_d.types.git_tree* tree, uint flags, .git_pathspec* ps);

/**
 * Match a pathspec against files in a diff list.
 *
 * This matches the pathspec against the files in the given diff list.
 *
 * If `out` is not null, this returns a `git_patchspec_match_list`.  That
 * contains the list of all matched filenames (unless you pass the
 * `git_pathspec_flag_t.GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
 * pathspecs with no match (if you used the `git_pathspec_flag_t.GIT_PATHSPEC_FIND_FAILURES`
 * flag).  You must call `git_pathspec_match_list_free()` on this object.
 *
 * Params:
 *      out_ = Output list of matches; pass null to just get return value
 *      diff = A generated diff list
 *      flags = Combination of git_pathspec_flag_t options to control match
 *      ps = Pathspec to be matched
 *
 * Returns: 0 on success, -1 on error, git_error_code.GIT_ENOTFOUND if no matches and the git_pathspec_flag_t.GIT_PATHSPEC_NO_MATCH_ERROR flag is used
 */
//GIT_EXTERN
int git_pathspec_match_diff(.git_pathspec_match_list** out_, libgit2_d.diff.git_diff* diff, uint flags, .git_pathspec* ps);

/**
 * Free memory associates with a git_pathspec_match_list
 *
 * Params:
 *      m = The git_pathspec_match_list to be freed
 */
//GIT_EXTERN
void git_pathspec_match_list_free(.git_pathspec_match_list* m);

/**
 * Get the number of items in a match list.
 *
 * Params:
 *      m = The git_pathspec_match_list object
 *
 * Returns: Number of items in match list
 */
//GIT_EXTERN
size_t git_pathspec_match_list_entrycount(const (.git_pathspec_match_list)* m);

/**
 * Get a matching filename by position.
 *
 * This routine cannot be used if the match list was generated by
 * `git_pathspec_match_diff`.  If so, it will always return null.
 *
 * Params:
 *      m = The git_pathspec_match_list object
 *      pos = The index into the list
 *
 * Returns: The filename of the match
 */
//GIT_EXTERN
const (char)* git_pathspec_match_list_entry(const (.git_pathspec_match_list)* m, size_t pos);

/**
 * Get a matching diff delta by position.
 *
 * This routine can only be used if the match list was generated by
 * `git_pathspec_match_diff`.  Otherwise it will always return null.
 *
 * Params:
 *      m = The git_pathspec_match_list object
 *      pos = The index into the list
 *
 * Returns: The filename of the match
 */
//GIT_EXTERN
const (libgit2_d.diff.git_diff_delta)* git_pathspec_match_list_diff_entry(const (.git_pathspec_match_list)* m, size_t pos);

/**
 * Get the number of pathspec items that did not match.
 *
 * This will be zero unless you passed git_pathspec_flag_t.GIT_PATHSPEC_FIND_FAILURES when
 * generating the git_pathspec_match_list.
 *
 * Params:
 *      m = The git_pathspec_match_list object
 *
 * Returns: Number of items in original pathspec that had no matches
 */
//GIT_EXTERN
size_t git_pathspec_match_list_failed_entrycount(const (.git_pathspec_match_list)* m);

/**
 * Get an original pathspec string that had no matches.
 *
 * This will be return null for positions out of range.
 *
 * Params:
 *      m = The git_pathspec_match_list object
 *      pos = The index into the failed items
 *
 * Returns: The pathspec pattern that didn't match anything
 */
//GIT_EXTERN
const (char)* git_pathspec_match_list_failed_entry(const (.git_pathspec_match_list)* m, size_t pos);