/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */
 
// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage

/*
 * Conversion parameters:
 * inFile  = glib-Perl-compatible-regular-expressions.html
 * outPack = glib
 * outFile = Regex
 * strct   = GRegex
 * realStrct=
 * ctorStrct=
 * clss    = Regex
 * interf  = 
 * class Code: Yes
 * interface Code: No
 * template for:
 * extend  = 
 * implements:
 * prefixes:
 * 	- g_regex_
 * omit structs:
 * omit prefixes:
 * 	- g_match_info_
 * omit code:
 * omit signals:
 * imports:
 * 	- glib.Str
 * 	- glib.ErrorG
 * 	- glib.GException
 * 	- glib.MatchInfo
 * 	- gtkc.Loader
 * 	- gtkc.paths
 * structWrap:
 * 	- GMatchInfo* -> MatchInfo
 * 	- GRegex* -> Regex
 * module aliases:
 * local aliases:
 * overrides:
 */

module glib.Regex;

public  import gtkc.glibtypes;

private import gtkc.glib;
private import glib.ConstructionException;


private import glib.Str;
private import glib.ErrorG;
private import glib.GException;
private import glib.MatchInfo;
private import gtkc.Loader;
private import gtkc.paths;




/**
 * The g_regex_*() functions implement regular
 * expression pattern matching using syntax and semantics similar to
 * Perl regular expression.
 *
 * Some functions accept a start_position argument, setting it differs
 * from just passing over a shortened string and setting G_REGEX_MATCH_NOTBOL
 * in the case of a pattern that begins with any kind of lookbehind assertion.
 * For example, consider the pattern "\Biss\B" which finds occurrences of "iss"
 * in the middle of words. ("\B" matches only if the current position in the
 * subject is not a word boundary.) When applied to the string "Mississipi"
 * from the fourth byte, namely "issipi", it does not match, because "\B" is
 * always false at the start of the subject, which is deemed to be a word
 * boundary. However, if the entire string is passed , but with
 * start_position set to 4, it finds the second occurrence of "iss" because
 * it is able to look behind the starting point to discover that it is
 * preceded by a letter.
 *
 * Note that, unless you set the G_REGEX_RAW flag, all the strings passed
 * to these functions must be encoded in UTF-8. The lengths and the positions
 * inside the strings are in bytes and not in characters, so, for instance,
 * "\xc3\xa0" (i.e. "à") is two bytes long but it is treated as a
 * single character. If you set G_REGEX_RAW the strings can be non-valid
 * UTF-8 strings and a byte is treated as a character, so "\xc3\xa0" is two
 * bytes and two characters long.
 *
 * When matching a pattern, "\n" matches only against a "\n" character in
 * the string, and "\r" matches only a "\r" character. To match any newline
 * sequence use "\R". This particular group matches either the two-character
 * sequence CR + LF ("\r\n"), or one of the single characters LF (linefeed,
 * U+000A, "\n"), VT vertical tab, U+000B, "\v"), FF (formfeed, U+000C, "\f"),
 * CR (carriage return, U+000D, "\r"), NEL (next line, U+0085), LS (line
 * separator, U+2028), or PS (paragraph separator, U+2029).
 *
 * The behaviour of the dot, circumflex, and dollar metacharacters are
 * affected by newline characters, the default is to recognize any newline
 * character (the same characters recognized by "\R"). This can be changed
 * with G_REGEX_NEWLINE_CR, G_REGEX_NEWLINE_LF and G_REGEX_NEWLINE_CRLF
 * compile options, and with G_REGEX_MATCH_NEWLINE_ANY,
 * G_REGEX_MATCH_NEWLINE_CR, G_REGEX_MATCH_NEWLINE_LF and
 * G_REGEX_MATCH_NEWLINE_CRLF match options. These settings are also
 * relevant when compiling a pattern if G_REGEX_EXTENDED is set, and an
 * unescaped "#" outside a character class is encountered. This indicates
 * a comment that lasts until after the next newline.
 *
 * When setting the G_REGEX_JAVASCRIPT_COMPAT flag, pattern syntax and pattern
 * matching is changed to be compatible with the way that regular expressions
 * work in JavaScript. More precisely, a lonely ']' character in the pattern
 * is a syntax error; the '\x' escape only allows 0 to 2 hexadecimal digits, and
 * you must use the '\u' escape sequence with 4 hex digits to specify a unicode
 * codepoint instead of '\x' or 'x{....}'. If '\x' or '\u' are not followed by
 * the specified number of hex digits, they match 'x' and 'u' literally; also
 * '\U' always matches 'U' instead of being an error in the pattern. Finally,
 * pattern matching is modified so that back references to an unset subpattern
 * group produces a match with the empty string instead of an error. See
 * man:pcreapi(3) for more information.
 *
 * Creating and manipulating the same GRegex structure from different
 * threads is not a problem as GRegex does not modify its internal
 * state between creation and destruction, on the other hand GMatchInfo
 * is not threadsafe.
 *
 * The regular expressions low-level functionalities are obtained through
 * the excellent PCRE library
 * written by Philip Hazel.
 */
public class Regex
{
	
	/** the main Gtk struct */
	protected GRegex* gRegex;
	
	
	public GRegex* getRegexStruct()
	{
		return gRegex;
	}
	
	
	/** the main Gtk struct as a void* */
	protected void* getStruct()
	{
		return cast(void*)gRegex;
	}
	
	/**
	 * Sets our main struct and passes it to the parent class
	 */
	public this (GRegex* gRegex)
	{
		this.gRegex = gRegex;
	}
	
	~this ()
	{
		if ( Linker.isLoaded(LIBRARY.GLIB) && gRegex !is null )
		{
			g_regex_unref(gRegex);
		}
	}
	
	/**
	 */
	
	/**
	 * Compiles the regular expression to an internal form, and does
	 * the initial setup of the GRegex structure.
	 * Since 2.14
	 * Params:
	 * pattern = the regular expression
	 * compileOptions = compile options for the regular expression, or 0
	 * matchOptions = match options for the regular expression, or 0
	 * Throws: GException on failure.
	 * Throws: ConstructionException GTK+ fails to create the object.
	 */
	public this (string pattern, GRegexCompileFlags compileOptions, GRegexMatchFlags matchOptions)
	{
		// GRegex * g_regex_new (const gchar *pattern,  GRegexCompileFlags compile_options,  GRegexMatchFlags match_options,  GError **error);
		GError* err = null;
		
		auto p = g_regex_new(Str.toStringz(pattern), compileOptions, matchOptions, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		if(p is null)
		{
			throw new ConstructionException("null returned by g_regex_new(Str.toStringz(pattern), compileOptions, matchOptions, &err)");
		}
		this(cast(GRegex*) p);
	}
	
	/**
	 * Increases reference count of regex by 1.
	 * Since 2.14
	 * Returns: regex
	 */
	public Regex doref()
	{
		// GRegex * g_regex_ref (GRegex *regex);
		auto p = g_regex_ref(gRegex);
		
		if(p is null)
		{
			return null;
		}
		
		return new Regex(cast(GRegex*) p);
	}
	
	/**
	 * Decreases reference count of regex by 1. When reference count drops
	 * to zero, it frees all the memory associated with the regex structure.
	 * Since 2.14
	 */
	public void unref()
	{
		// void g_regex_unref (GRegex *regex);
		g_regex_unref(gRegex);
	}
	
	/**
	 * Gets the pattern string associated with regex, i.e. a copy of
	 * the string passed to g_regex_new().
	 * Since 2.14
	 * Returns: the pattern of regex
	 */
	public string getPattern()
	{
		// const gchar * g_regex_get_pattern (const GRegex *regex);
		return Str.toString(g_regex_get_pattern(gRegex));
	}
	
	/**
	 * Returns the number of the highest back reference
	 * in the pattern, or 0 if the pattern does not contain
	 * back references.
	 * Since 2.14
	 * Returns: the number of the highest back reference
	 */
	public int getMaxBackref()
	{
		// gint g_regex_get_max_backref (const GRegex *regex);
		return g_regex_get_max_backref(gRegex);
	}
	
	/**
	 * Returns the number of capturing subpatterns in the pattern.
	 * Since 2.14
	 * Returns: the number of capturing subpatterns
	 */
	public int getCaptureCount()
	{
		// gint g_regex_get_capture_count (const GRegex *regex);
		return g_regex_get_capture_count(gRegex);
	}
	
	/**
	 * Checks whether the pattern contains explicit CR or LF references.
	 * Since 2.34
	 * Returns: TRUE if the pattern contains explicit CR or LF references
	 */
	public int getHasCrOrLf()
	{
		// gboolean g_regex_get_has_cr_or_lf (const GRegex *regex);
		return g_regex_get_has_cr_or_lf(gRegex);
	}
	
	/**
	 * Gets the number of characters in the longest lookbehind assertion in the
	 * pattern. This information is useful when doing multi-segment matching using
	 * the partial matching facilities.
	 * Since 2.38
	 * Returns: the number of characters in the longest lookbehind assertion.
	 */
	public int getMaxLookbehind()
	{
		// gint g_regex_get_max_lookbehind (const GRegex *regex);
		return g_regex_get_max_lookbehind(gRegex);
	}
	
	/**
	 * Retrieves the number of the subexpression named name.
	 * Since 2.14
	 * Params:
	 * name = name of the subexpression
	 * Returns: The number of the subexpression or -1 if name does not exists
	 */
	public int getStringNumber(string name)
	{
		// gint g_regex_get_string_number (const GRegex *regex,  const gchar *name);
		return g_regex_get_string_number(gRegex, Str.toStringz(name));
	}
	
	/**
	 * Returns the compile options that regex was created with.
	 * Since 2.26
	 * Returns: flags from GRegexCompileFlags
	 */
	public GRegexCompileFlags getCompileFlags()
	{
		// GRegexCompileFlags g_regex_get_compile_flags (const GRegex *regex);
		return g_regex_get_compile_flags(gRegex);
	}
	
	/**
	 * Returns the match options that regex was created with.
	 * Since 2.26
	 * Returns: flags from GRegexMatchFlags
	 */
	public GRegexMatchFlags getMatchFlags()
	{
		// GRegexMatchFlags g_regex_get_match_flags (const GRegex *regex);
		return g_regex_get_match_flags(gRegex);
	}
	
	/**
	 * Escapes the special characters used for regular expressions
	 * in string, for instance "a.b*c" becomes "a\.b\*c". This
	 * function is useful to dynamically generate regular expressions.
	 * string can contain nul characters that are replaced with "\0",
	 * in this case remember to specify the correct length of string
	 * in length.
	 * Since 2.14
	 * Params:
	 * string = the string to escape. [array length=length]
	 * Returns: a newly-allocated escaped string
	 */
	public static string escapeString(string string)
	{
		// gchar * g_regex_escape_string (const gchar *string,  gint length);
		return Str.toString(g_regex_escape_string(cast(char*)string.ptr, cast(int) string.length));
	}
	
	/**
	 * Escapes the nul characters in string to "\x00". It can be used
	 * to compile a regex with embedded nul characters.
	 * For completeness, length can be -1 for a nul-terminated string.
	 * In this case the output string will be of course equal to string.
	 * Since 2.30
	 * Params:
	 * string = the string to escape
	 * Returns: a newly-allocated escaped string
	 */
	public static string escapeNul(string string)
	{
		// gchar * g_regex_escape_nul (const gchar *string,  gint length);
		return Str.toString(g_regex_escape_nul(cast(char*)string.ptr, cast(int) string.length));
	}
	
	/**
	 * Scans for a match in string for pattern.
	 * This function is equivalent to g_regex_match() but it does not
	 * require to compile the pattern with g_regex_new(), avoiding some
	 * lines of code when you need just to do a match without extracting
	 * substrings, capture counts, and so on.
	 * If this function is to be called on the same pattern more than
	 * once, it's more efficient to compile the pattern once with
	 * g_regex_new() and then use g_regex_match().
	 * Since 2.14
	 * Params:
	 * pattern = the regular expression
	 * string = the string to scan for matches
	 * compileOptions = compile options for the regular expression, or 0
	 * matchOptions = match options, or 0
	 * Returns: TRUE if the string matched, FALSE otherwise
	 */
	public static int matchSimple(string pattern, string string, GRegexCompileFlags compileOptions, GRegexMatchFlags matchOptions)
	{
		// gboolean g_regex_match_simple (const gchar *pattern,  const gchar *string,  GRegexCompileFlags compile_options,  GRegexMatchFlags match_options);
		return g_regex_match_simple(Str.toStringz(pattern), Str.toStringz(string), compileOptions, matchOptions);
	}
	
	/**
	 * Scans for a match in string for the pattern in regex.
	 * The match_options are combined with the match options specified
	 * when the regex structure was created, letting you have more
	 * flexibility in reusing GRegex structures.
	 * A GMatchInfo structure, used to get information on the match,
	 * is stored in match_info if not NULL. Note that if match_info
	 * is not NULL then it is created even if the function returns FALSE,
	 * i.e. you must free it regardless if regular expression actually matched.
	 * To retrieve all the non-overlapping matches of the pattern in
	 * string you can use g_match_info_next().
	 * $(DDOC_COMMENT example)
	 * string is not copied and is used in GMatchInfo internally. If
	 * you use any GMatchInfo method (except g_match_info_free()) after
	 * freeing or modifying string then the behaviour is undefined.
	 * Since 2.14
	 * Params:
	 * string = the string to scan for matches
	 * matchOptions = match options
	 * matchInfo = pointer to location where to store
	 * the GMatchInfo, or NULL if you do not need it. [out][allow-none]
	 * Returns: TRUE is the string matched, FALSE otherwise
	 */
	public int match(string string, GRegexMatchFlags matchOptions, out MatchInfo matchInfo)
	{
		// gboolean g_regex_match (const GRegex *regex,  const gchar *string,  GRegexMatchFlags match_options,  GMatchInfo **match_info);
		GMatchInfo* outmatchInfo = null;
		
		auto p = g_regex_match(gRegex, Str.toStringz(string), matchOptions, &outmatchInfo);
		
		matchInfo = new MatchInfo(outmatchInfo);
		return p;
	}
	
	/**
	 * Scans for a match in string for the pattern in regex.
	 * The match_options are combined with the match options specified
	 * when the regex structure was created, letting you have more
	 * flexibility in reusing GRegex structures.
	 * Setting start_position differs from just passing over a shortened
	 * string and setting G_REGEX_MATCH_NOTBOL in the case of a pattern
	 * that begins with any kind of lookbehind assertion, such as "\b".
	 * A GMatchInfo structure, used to get information on the match, is
	 * stored in match_info if not NULL. Note that if match_info is
	 * not NULL then it is created even if the function returns FALSE,
	 * i.e. you must free it regardless if regular expression actually
	 * matched.
	 * string is not copied and is used in GMatchInfo internally. If
	 * you use any GMatchInfo method (except g_match_info_free()) after
	 * freeing or modifying string then the behaviour is undefined.
	 * To retrieve all the non-overlapping matches of the pattern in
	 * string you can use g_match_info_next().
	 * $(DDOC_COMMENT example)
	 * Since 2.14
	 * Params:
	 * string = the string to scan for matches. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * matchOptions = match options
	 * matchInfo = pointer to location where to store
	 * the GMatchInfo, or NULL if you do not need it. [out][allow-none]
	 * Returns: TRUE is the string matched, FALSE otherwise
	 * Throws: GException on failure.
	 */
	public int matchFull(string string, int startPosition, GRegexMatchFlags matchOptions, out MatchInfo matchInfo)
	{
		// gboolean g_regex_match_full (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  GRegexMatchFlags match_options,  GMatchInfo **match_info,  GError **error);
		GMatchInfo* outmatchInfo = null;
		GError* err = null;
		
		auto p = g_regex_match_full(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, matchOptions, &outmatchInfo, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		matchInfo = new MatchInfo(outmatchInfo);
		return p;
	}
	
	/**
	 * Using the standard algorithm for regular expression matching only
	 * the longest match in the string is retrieved. This function uses
	 * a different algorithm so it can retrieve all the possible matches.
	 * For more documentation see g_regex_match_all_full().
	 * A GMatchInfo structure, used to get information on the match, is
	 * stored in match_info if not NULL. Note that if match_info is
	 * not NULL then it is created even if the function returns FALSE,
	 * i.e. you must free it regardless if regular expression actually
	 * matched.
	 * string is not copied and is used in GMatchInfo internally. If
	 * you use any GMatchInfo method (except g_match_info_free()) after
	 * freeing or modifying string then the behaviour is undefined.
	 * Since 2.14
	 * Params:
	 * string = the string to scan for matches
	 * matchOptions = match options
	 * matchInfo = pointer to location where to store
	 * the GMatchInfo, or NULL if you do not need it. [out][allow-none]
	 * Returns: TRUE is the string matched, FALSE otherwise
	 */
	public int matchAll(string string, GRegexMatchFlags matchOptions, out MatchInfo matchInfo)
	{
		// gboolean g_regex_match_all (const GRegex *regex,  const gchar *string,  GRegexMatchFlags match_options,  GMatchInfo **match_info);
		GMatchInfo* outmatchInfo = null;
		
		auto p = g_regex_match_all(gRegex, Str.toStringz(string), matchOptions, &outmatchInfo);
		
		matchInfo = new MatchInfo(outmatchInfo);
		return p;
	}
	
	/**
	 * Using the standard algorithm for regular expression matching only
	 * the longest match in the string is retrieved, it is not possible
	 * to obtain all the available matches. For instance matching
	 * "<a> <b> <c>" against the pattern "<.*>"
	 * you get "<a> <b> <c>".
	 * This function uses a different algorithm (called DFA, i.e. deterministic
	 * finite automaton), so it can retrieve all the possible matches, all
	 * starting at the same point in the string. For instance matching
	 * "<a> <b> <c>" against the pattern "<.*>"
	 * you would obtain three matches: "<a> <b> <c>",
	 * "<a> <b>" and "<a>".
	 * The number of matched strings is retrieved using
	 * g_match_info_get_match_count(). To obtain the matched strings and
	 * their position you can use, respectively, g_match_info_fetch() and
	 * g_match_info_fetch_pos(). Note that the strings are returned in
	 * reverse order of length; that is, the longest matching string is
	 * given first.
	 * Note that the DFA algorithm is slower than the standard one and it
	 * is not able to capture substrings, so backreferences do not work.
	 * Setting start_position differs from just passing over a shortened
	 * string and setting G_REGEX_MATCH_NOTBOL in the case of a pattern
	 * that begins with any kind of lookbehind assertion, such as "\b".
	 * A GMatchInfo structure, used to get information on the match, is
	 * stored in match_info if not NULL. Note that if match_info is
	 * not NULL then it is created even if the function returns FALSE,
	 * i.e. you must free it regardless if regular expression actually
	 * matched.
	 * string is not copied and is used in GMatchInfo internally. If
	 * you use any GMatchInfo method (except g_match_info_free()) after
	 * freeing or modifying string then the behaviour is undefined.
	 * Since 2.14
	 * Params:
	 * string = the string to scan for matches. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * matchOptions = match options
	 * matchInfo = pointer to location where to store
	 * the GMatchInfo, or NULL if you do not need it. [out][allow-none]
	 * Returns: TRUE is the string matched, FALSE otherwise
	 * Throws: GException on failure.
	 */
	public int matchAllFull(string string, int startPosition, GRegexMatchFlags matchOptions, out MatchInfo matchInfo)
	{
		// gboolean g_regex_match_all_full (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  GRegexMatchFlags match_options,  GMatchInfo **match_info,  GError **error);
		GMatchInfo* outmatchInfo = null;
		GError* err = null;
		
		auto p = g_regex_match_all_full(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, matchOptions, &outmatchInfo, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		matchInfo = new MatchInfo(outmatchInfo);
		return p;
	}
	
	/**
	 * Breaks the string on the pattern, and returns an array of
	 * the tokens. If the pattern contains capturing parentheses,
	 * then the text for each of the substrings will also be returned.
	 * If the pattern does not match anywhere in the string, then the
	 * whole string is returned as the first token.
	 * This function is equivalent to g_regex_split() but it does
	 * not require to compile the pattern with g_regex_new(), avoiding
	 * some lines of code when you need just to do a split without
	 * extracting substrings, capture counts, and so on.
	 * If this function is to be called on the same pattern more than
	 * once, it's more efficient to compile the pattern once with
	 * g_regex_new() and then use g_regex_split().
	 * As a special case, the result of splitting the empty string ""
	 * is an empty vector, not a vector containing a single string.
	 * The reason for this special case is that being able to represent
	 * a empty vector is typically more useful than consistent handling
	 * of empty elements. If you do need to represent empty elements,
	 * you'll need to check for the empty string before calling this
	 * function.
	 * A pattern that can match empty strings splits string into
	 * separate characters wherever it matches the empty string between
	 * characters. For example splitting "ab c" using as a separator
	 * "\s*", you will get "a", "b" and "c".
	 * Since 2.14
	 * Params:
	 * pattern = the regular expression
	 * string = the string to scan for matches
	 * compileOptions = compile options for the regular expression, or 0
	 * matchOptions = match options, or 0
	 * Returns: a NULL-terminated array of strings. Free it using g_strfreev(). [transfer full]
	 */
	public static string[] splitSimple(string pattern, string string, GRegexCompileFlags compileOptions, GRegexMatchFlags matchOptions)
	{
		// gchar ** g_regex_split_simple (const gchar *pattern,  const gchar *string,  GRegexCompileFlags compile_options,  GRegexMatchFlags match_options);
		return Str.toStringArray(g_regex_split_simple(Str.toStringz(pattern), Str.toStringz(string), compileOptions, matchOptions));
	}
	
	/**
	 * Breaks the string on the pattern, and returns an array of the tokens.
	 * If the pattern contains capturing parentheses, then the text for each
	 * of the substrings will also be returned. If the pattern does not match
	 * anywhere in the string, then the whole string is returned as the first
	 * token.
	 * As a special case, the result of splitting the empty string "" is an
	 * empty vector, not a vector containing a single string. The reason for
	 * this special case is that being able to represent a empty vector is
	 * typically more useful than consistent handling of empty elements. If
	 * you do need to represent empty elements, you'll need to check for the
	 * empty string before calling this function.
	 * A pattern that can match empty strings splits string into separate
	 * characters wherever it matches the empty string between characters.
	 * For example splitting "ab c" using as a separator "\s*", you will get
	 * "a", "b" and "c".
	 * Since 2.14
	 * Params:
	 * string = the string to split with the pattern
	 * matchOptions = match time option flags
	 * Returns: a NULL-terminated gchar ** array. Free it using g_strfreev(). [transfer full]
	 */
	public string[] split(string string, GRegexMatchFlags matchOptions)
	{
		// gchar ** g_regex_split (const GRegex *regex,  const gchar *string,  GRegexMatchFlags match_options);
		return Str.toStringArray(g_regex_split(gRegex, Str.toStringz(string), matchOptions));
	}
	
	/**
	 * Breaks the string on the pattern, and returns an array of the tokens.
	 * If the pattern contains capturing parentheses, then the text for each
	 * of the substrings will also be returned. If the pattern does not match
	 * anywhere in the string, then the whole string is returned as the first
	 * token.
	 * As a special case, the result of splitting the empty string "" is an
	 * empty vector, not a vector containing a single string. The reason for
	 * this special case is that being able to represent a empty vector is
	 * typically more useful than consistent handling of empty elements. If
	 * you do need to represent empty elements, you'll need to check for the
	 * empty string before calling this function.
	 * A pattern that can match empty strings splits string into separate
	 * characters wherever it matches the empty string between characters.
	 * For example splitting "ab c" using as a separator "\s*", you will get
	 * "a", "b" and "c".
	 * Setting start_position differs from just passing over a shortened
	 * string and setting G_REGEX_MATCH_NOTBOL in the case of a pattern
	 * that begins with any kind of lookbehind assertion, such as "\b".
	 * Since 2.14
	 * Params:
	 * string = the string to split with the pattern. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * matchOptions = match time option flags
	 * maxTokens = the maximum number of tokens to split string into.
	 * If this is less than 1, the string is split completely
	 * Returns: a NULL-terminated gchar ** array. Free it using g_strfreev(). [transfer full]
	 * Throws: GException on failure.
	 */
	public string[] splitFull(string string, int startPosition, GRegexMatchFlags matchOptions, int maxTokens)
	{
		// gchar ** g_regex_split_full (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  GRegexMatchFlags match_options,  gint max_tokens,  GError **error);
		GError* err = null;
		
		auto p = g_regex_split_full(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, matchOptions, maxTokens, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		return Str.toStringArray(p);
	}
	
	/**
	 * Replaces all occurrences of the pattern in regex with the
	 * replacement text. Backreferences of the form '\number' or
	 * '\g<number>' in the replacement text are interpolated by the
	 * number-th captured subexpression of the match, '\g<name>' refers
	 * to the captured subexpression with the given name. '\0' refers to the
	 * complete match, but '\0' followed by a number is the octal representation
	 * of a character. To include a literal '\' in the replacement, write '\\'.
	 * Since 2.14
	 * Params:
	 * string = the string to perform matches against. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * replacement = text to replace each match with
	 * matchOptions = options for the match
	 * Returns: a newly allocated string containing the replacements
	 * Throws: GException on failure.
	 */
	public string replace(string string, int startPosition, string replacement, GRegexMatchFlags matchOptions)
	{
		// gchar * g_regex_replace (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  const gchar *replacement,  GRegexMatchFlags match_options,  GError **error);
		GError* err = null;
		
		auto p = g_regex_replace(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, Str.toStringz(replacement), matchOptions, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		return Str.toString(p);
	}
	
	/**
	 * Replaces all occurrences of the pattern in regex with the
	 * replacement text. replacement is replaced literally, to
	 * include backreferences use g_regex_replace().
	 * Setting start_position differs from just passing over a
	 * shortened string and setting G_REGEX_MATCH_NOTBOL in the
	 * case of a pattern that begins with any kind of lookbehind
	 * assertion, such as "\b".
	 * Since 2.14
	 * Params:
	 * string = the string to perform matches against. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * replacement = text to replace each match with
	 * matchOptions = options for the match
	 * Returns: a newly allocated string containing the replacements
	 * Throws: GException on failure.
	 */
	public string replaceLiteral(string string, int startPosition, string replacement, GRegexMatchFlags matchOptions)
	{
		// gchar * g_regex_replace_literal (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  const gchar *replacement,  GRegexMatchFlags match_options,  GError **error);
		GError* err = null;
		
		auto p = g_regex_replace_literal(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, Str.toStringz(replacement), matchOptions, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		return Str.toString(p);
	}
	
	/**
	 * Replaces occurrences of the pattern in regex with the output of
	 * eval for that occurrence.
	 * Setting start_position differs from just passing over a shortened
	 * string and setting G_REGEX_MATCH_NOTBOL in the case of a pattern
	 * that begins with any kind of lookbehind assertion, such as "\b".
	 * The following example uses g_regex_replace_eval() to replace multiple
	 * Since 2.14
	 * Params:
	 * string = string to perform matches against. [array length=string_len]
	 * startPosition = starting index of the string to match
	 * matchOptions = options for the match
	 * eval = a function to call for each match
	 * userData = user data to pass to the function
	 * Returns: a newly allocated string containing the replacements
	 * Throws: GException on failure.
	 */
	public string replaceEval(string string, int startPosition, GRegexMatchFlags matchOptions, GRegexEvalCallback eval, void* userData)
	{
		// gchar * g_regex_replace_eval (const GRegex *regex,  const gchar *string,  gssize string_len,  gint start_position,  GRegexMatchFlags match_options,  GRegexEvalCallback eval,  gpointer user_data,  GError **error);
		GError* err = null;
		
		auto p = g_regex_replace_eval(gRegex, cast(char*)string.ptr, cast(int) string.length, startPosition, matchOptions, eval, userData, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		return Str.toString(p);
	}
	
	/**
	 * Checks whether replacement is a valid replacement string
	 * (see g_regex_replace()), i.e. that all escape sequences in
	 * it are valid.
	 * If has_references is not NULL then replacement is checked
	 * for pattern references. For instance, replacement text 'foo\n'
	 * does not contain references and may be evaluated without information
	 * about actual match, but '\0\1' (whole match followed by first
	 * subpattern) requires valid GMatchInfo object.
	 * Since 2.14
	 * Params:
	 * replacement = the replacement string
	 * hasReferences = location to store information about
	 * references in replacement or NULL. [out][allow-none]
	 * Returns: whether replacement is a valid replacement string
	 * Throws: GException on failure.
	 */
	public static int checkReplacement(string replacement, out int hasReferences)
	{
		// gboolean g_regex_check_replacement (const gchar *replacement,  gboolean *has_references,  GError **error);
		GError* err = null;
		
		auto p = g_regex_check_replacement(Str.toStringz(replacement), &hasReferences, &err);
		
		if (err !is null)
		{
			throw new GException( new ErrorG(err) );
		}
		
		return p;
	}
}