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File: [cvsweb.bsd.lv] / mandoc / mandoc.h (download)

Revision 1.248, Sat Jul 28 18:34:15 2018 UTC (3 years ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_14_4
Changes since 1.247: +3 -2 lines

Issue a STYLE message when normalizing the date format in .Dd/.TH.
Leah Neukirchen pointed out that mdoclint(1) used to warn about a
leading zero before the day number, so we know that both NetBSD and
Void Linux want the message.  It does no harm on OpenBSD because
Mdocdate always does the right thing anyway.
jmc@ agrees that it makes sense in contexts not using Mdocdate.

/*	$Id: mandoc.h,v 1.248 2018/07/28 18:34:15 schwarze Exp $ */
/*
 * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2010-2018 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define ASCII_NBRSP	 31  /* non-breaking space */
#define	ASCII_HYPH	 30  /* breakable hyphen */
#define	ASCII_BREAK	 29  /* breakable zero-width space */

/*
 * Status level.  This refers to both internal status (i.e., whilst
 * running, when warnings/errors are reported) and an indicator of a
 * threshold of when to halt (when said internal state exceeds the
 * threshold).
 */
enum	mandoclevel {
	MANDOCLEVEL_OK = 0,
	MANDOCLEVEL_STYLE, /* style suggestions */
	MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
	MANDOCLEVEL_ERROR, /* input has been thrown away */
	MANDOCLEVEL_UNSUPP, /* input needs unimplemented features */
	MANDOCLEVEL_BADARG, /* bad argument in invocation */
	MANDOCLEVEL_SYSERR, /* system error */
	MANDOCLEVEL_MAX
};

/*
 * All possible things that can go wrong within a parse, be it libroff,
 * libmdoc, or libman.
 */
enum	mandocerr {
	MANDOCERR_OK,

	MANDOCERR_BASE, /* ===== start of base system conventions ===== */

	MANDOCERR_MDOCDATE, /* Mdocdate found: Dd ... */
	MANDOCERR_MDOCDATE_MISSING, /* Mdocdate missing: Dd ... */
	MANDOCERR_ARCH_BAD,  /* unknown architecture: Dt ... arch */
	MANDOCERR_OS_ARG,  /* operating system explicitly specified: Os ... */
	MANDOCERR_RCS_MISSING, /* RCS id missing */
	MANDOCERR_XR_BAD,  /* referenced manual not found: Xr name sec */

	MANDOCERR_STYLE, /* ===== start of style suggestions ===== */

	MANDOCERR_DATE_LEGACY, /* legacy man(7) date format: Dd ... */
	MANDOCERR_DATE_NORM, /* normalizing date format to: ... */
	MANDOCERR_TITLE_CASE, /* lower case character in document title */
	MANDOCERR_RCS_REP, /* duplicate RCS id: ... */
	MANDOCERR_SEC_TYPO,  /* possible typo in section name: Sh ... */
	MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */
	MANDOCERR_MACRO_USELESS, /* useless macro: macro */
	MANDOCERR_BX, /* consider using OS macro: macro */
	MANDOCERR_ER_ORDER, /* errnos out of order: Er ... */
	MANDOCERR_ER_REP, /* duplicate errno: Er ... */
	MANDOCERR_DELIM, /* trailing delimiter: macro ... */
	MANDOCERR_DELIM_NB, /* no blank before trailing delimiter: macro ... */
	MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */
	MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
	MANDOCERR_DASHDASH, /* verbatim "--", maybe consider using \(em */
	MANDOCERR_FUNC, /* function name without markup: name() */
	MANDOCERR_SPACE_EOL, /* whitespace at end of input line */
	MANDOCERR_COMMENT_BAD, /* bad comment style */

	MANDOCERR_WARNING, /* ===== start of warnings ===== */

	/* related to the prologue */
	MANDOCERR_DT_NOTITLE, /* missing manual title, using UNTITLED: line */
	MANDOCERR_TH_NOTITLE, /* missing manual title, using "": [macro] */
	MANDOCERR_MSEC_MISSING, /* missing manual section, using "": macro */
	MANDOCERR_MSEC_BAD, /* unknown manual section: Dt ... section */
	MANDOCERR_DATE_MISSING, /* missing date, using today's date */
	MANDOCERR_DATE_BAD, /* cannot parse date, using it verbatim: date */
	MANDOCERR_DATE_FUTURE, /* date in the future, using it anyway: date */
	MANDOCERR_OS_MISSING, /* missing Os macro, using "" */
	MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */
	MANDOCERR_PROLOG_ORDER, /* prologue macros out of order: macros */

	/* related to document structure */
	MANDOCERR_SO, /* .so is fragile, better use ln(1): so path */
	MANDOCERR_DOC_EMPTY, /* no document body */
	MANDOCERR_SEC_BEFORE, /* content before first section header: macro */
	MANDOCERR_NAMESEC_FIRST, /* first section is not NAME: Sh title */
	MANDOCERR_NAMESEC_NONM, /* NAME section without Nm before Nd */
	MANDOCERR_NAMESEC_NOND, /* NAME section without description */
	MANDOCERR_NAMESEC_ND, /* description not at the end of NAME */
	MANDOCERR_NAMESEC_BAD, /* bad NAME section content: macro */
	MANDOCERR_NAMESEC_PUNCT, /* missing comma before name: Nm name */
	MANDOCERR_ND_EMPTY, /* missing description line, using "" */
	MANDOCERR_ND_LATE, /* description line outside NAME section */
	MANDOCERR_SEC_ORDER, /* sections out of conventional order: Sh title */
	MANDOCERR_SEC_REP, /* duplicate section title: Sh title */
	MANDOCERR_SEC_MSEC, /* unexpected section: Sh title for ... only */
	MANDOCERR_XR_SELF,  /* cross reference to self: Xr name sec */
	MANDOCERR_XR_ORDER, /* unusual Xr order: ... after ... */
	MANDOCERR_XR_PUNCT, /* unusual Xr punctuation: ... after ... */
	MANDOCERR_AN_MISSING, /* AUTHORS section without An macro */

	/* related to macros and nesting */
	MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
	MANDOCERR_MACRO_CALL, /* macro neither callable nor escaped: macro */
	MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */
	MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */
	MANDOCERR_NS_SKIP, /* skipping no-space macro */
	MANDOCERR_BLK_NEST, /* blocks badly nested: macro ... */
	MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */
	MANDOCERR_BL_MOVE, /* moving content out of list: macro */
	MANDOCERR_TA_LINE, /* first macro on line: Ta */
	MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */
	MANDOCERR_BLK_BLANK, /* skipping blank line in line scope */

	/* related to missing arguments */
	MANDOCERR_REQ_EMPTY, /* skipping empty request: request */
	MANDOCERR_COND_EMPTY, /* conditional request controls empty scope */
	MANDOCERR_MACRO_EMPTY, /* skipping empty macro: macro */
	MANDOCERR_BLK_EMPTY, /* empty block: macro */
	MANDOCERR_ARG_EMPTY, /* empty argument, using 0n: macro arg */
	MANDOCERR_BD_NOTYPE, /* missing display type, using -ragged: Bd */
	MANDOCERR_BL_LATETYPE, /* list type is not the first argument: Bl arg */
	MANDOCERR_BL_NOWIDTH, /* missing -width in -tag list, using 6n */
	MANDOCERR_EX_NONAME, /* missing utility name, using "": Ex */
	MANDOCERR_FO_NOHEAD, /* missing function name, using "": Fo */
	MANDOCERR_IT_NOHEAD, /* empty head in list item: Bl -type It */
	MANDOCERR_IT_NOBODY, /* empty list item: Bl -type It */
	MANDOCERR_IT_NOARG, /* missing argument, using next line: Bl -c It */
	MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */
	MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */
	MANDOCERR_PF_SKIP, /* nothing follows prefix: Pf arg */
	MANDOCERR_RS_EMPTY, /* empty reference block: Rs */
	MANDOCERR_XR_NOSEC, /* missing section argument: Xr arg */
	MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */
	MANDOCERR_OP_EMPTY, /* missing option string, using "": OP */
	MANDOCERR_UR_NOHEAD, /* missing resource identifier, using "": UR */
	MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */

	/* related to bad arguments */
	MANDOCERR_ARG_REP, /* duplicate argument: macro arg */
	MANDOCERR_AN_REP, /* skipping duplicate argument: An -arg */
	MANDOCERR_BD_REP, /* skipping duplicate display type: Bd -type */
	MANDOCERR_BL_REP, /* skipping duplicate list type: Bl -type */
	MANDOCERR_BL_SKIPW, /* skipping -width argument: Bl -type */
	MANDOCERR_BL_COL, /* wrong number of cells */
	MANDOCERR_AT_BAD, /* unknown AT&T UNIX version: At version */
	MANDOCERR_FA_COMMA, /* comma in function argument: arg */
	MANDOCERR_FN_PAREN, /* parenthesis in function name: arg */
	MANDOCERR_LB_BAD, /* unknown library name: Lb ... */
	MANDOCERR_RS_BAD, /* invalid content in Rs block: macro */
	MANDOCERR_SM_BAD, /* invalid Boolean argument: macro arg */
	MANDOCERR_FT_BAD, /* unknown font, skipping request: ft font */
	MANDOCERR_TR_ODD, /* odd number of characters in request: tr char */

	/* related to plain text */
	MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */
	MANDOCERR_FI_TAB, /* tab in filled text */
	MANDOCERR_EOS, /* new sentence, new line */
	MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */
	MANDOCERR_STR_UNDEF, /* undefined string, using "": name */

	/* related to tables */
	MANDOCERR_TBLLAYOUT_SPAN, /* tbl line starts with span */
	MANDOCERR_TBLLAYOUT_DOWN, /* tbl column starts with span */
	MANDOCERR_TBLLAYOUT_VERT, /* skipping vertical bar in tbl layout */

	MANDOCERR_ERROR, /* ===== start of errors ===== */

	/* related to tables */
	MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */
	MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */
	MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */
	MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */
	MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */
	MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */
	MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */
	MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */
	MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */
	MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */
	MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */

	/* related to document structure and macros */
	MANDOCERR_FILE, /* cannot open file */
	MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
	MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
	MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
	MANDOCERR_CHAR_BAD, /* skipping bad character: number */
	MANDOCERR_MACRO, /* skipping unknown macro: macro */
	MANDOCERR_REQ_INSEC, /* skipping insecure request: request */
	MANDOCERR_IT_STRAY, /* skipping item outside list: It ... */
	MANDOCERR_TA_STRAY, /* skipping column outside column list: Ta */
	MANDOCERR_BLK_NOTOPEN, /* skipping end of block that is not open */
	MANDOCERR_RE_NOTOPEN, /* fewer RS blocks open, skipping: RE arg */
	MANDOCERR_BLK_BROKEN, /* inserting missing end of block: macro ... */
	MANDOCERR_BLK_NOEND, /* appending missing end of block: macro */

	/* related to request and macro arguments */
	MANDOCERR_NAMESC, /* escaped character not allowed in a name: name */
	MANDOCERR_BD_FILE, /* NOT IMPLEMENTED: Bd -file */
	MANDOCERR_BD_NOARG, /* skipping display without arguments: Bd */
	MANDOCERR_BL_NOTYPE, /* missing list type, using -item: Bl */
	MANDOCERR_CE_NONUM, /* argument is not numeric, using 1: ce ... */
	MANDOCERR_NM_NONAME, /* missing manual name, using "": Nm */
	MANDOCERR_OS_UNAME, /* uname(3) system call failed, using UNKNOWN */
	MANDOCERR_ST_BAD, /* unknown standard specifier: St standard */
	MANDOCERR_IT_NONUM, /* skipping request without numeric argument */
	MANDOCERR_SO_PATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
	MANDOCERR_SO_FAIL, /* .so request failed */
	MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */
	MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */
	MANDOCERR_DIVZERO, /* divide by zero */

	MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */

	MANDOCERR_TOOLARGE, /* input too large */
	MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */
	MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */
	MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */
	MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */
	MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */

	MANDOCERR_MAX
};

struct	tbl_opts {
	char		  tab; /* cell-separator */
	char		  decimal; /* decimal point */
	int		  opts;
#define	TBL_OPT_CENTRE	 (1 << 0)
#define	TBL_OPT_EXPAND	 (1 << 1)
#define	TBL_OPT_BOX	 (1 << 2)
#define	TBL_OPT_DBOX	 (1 << 3)
#define	TBL_OPT_ALLBOX	 (1 << 4)
#define	TBL_OPT_NOKEEP	 (1 << 5)
#define	TBL_OPT_NOSPACE	 (1 << 6)
#define	TBL_OPT_NOWARN	 (1 << 7)
	int		  cols; /* number of columns */
	int		  lvert; /* width of left vertical line */
	int		  rvert; /* width of right vertical line */
};

enum	tbl_cellt {
	TBL_CELL_CENTRE, /* c, C */
	TBL_CELL_RIGHT, /* r, R */
	TBL_CELL_LEFT, /* l, L */
	TBL_CELL_NUMBER, /* n, N */
	TBL_CELL_SPAN, /* s, S */
	TBL_CELL_LONG, /* a, A */
	TBL_CELL_DOWN, /* ^ */
	TBL_CELL_HORIZ, /* _, - */
	TBL_CELL_DHORIZ, /* = */
	TBL_CELL_MAX
};

/*
 * A cell in a layout row.
 */
struct	tbl_cell {
	struct tbl_cell	 *next;
	char		 *wstr; /* min width represented as a string */
	size_t		  width; /* minimum column width */
	size_t		  spacing; /* to the right of the column */
	int		  vert; /* width of subsequent vertical line */
	int		  col; /* column number, starting from 0 */
	int		  flags;
#define	TBL_CELL_TALIGN	 (1 << 0) /* t, T */
#define	TBL_CELL_BALIGN	 (1 << 1) /* d, D */
#define	TBL_CELL_BOLD	 (1 << 2) /* fB, B, b */
#define	TBL_CELL_ITALIC	 (1 << 3) /* fI, I, i */
#define	TBL_CELL_EQUAL	 (1 << 4) /* e, E */
#define	TBL_CELL_UP	 (1 << 5) /* u, U */
#define	TBL_CELL_WIGN	 (1 << 6) /* z, Z */
#define	TBL_CELL_WMAX	 (1 << 7) /* x, X */
	enum tbl_cellt	  pos;
};

/*
 * A layout row.
 */
struct	tbl_row {
	struct tbl_row	 *next;
	struct tbl_cell	 *first;
	struct tbl_cell	 *last;
	int		  vert; /* width of left vertical line */
};

enum	tbl_datt {
	TBL_DATA_NONE, /* has no data */
	TBL_DATA_DATA, /* consists of data/string */
	TBL_DATA_HORIZ, /* horizontal line */
	TBL_DATA_DHORIZ, /* double-horizontal line */
	TBL_DATA_NHORIZ, /* squeezed horizontal line */
	TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
};

/*
 * A cell within a row of data.  The "string" field contains the actual
 * string value that's in the cell.  The rest is layout.
 */
struct	tbl_dat {
	struct tbl_cell	 *layout; /* layout cell */
	struct tbl_dat	 *next;
	char		 *string; /* data (NULL if not TBL_DATA_DATA) */
	int		  spans; /* how many spans follow */
	int		  block; /* T{ text block T} */
	enum tbl_datt	  pos;
};

enum	tbl_spant {
	TBL_SPAN_DATA, /* span consists of data */
	TBL_SPAN_HORIZ, /* span is horizontal line */
	TBL_SPAN_DHORIZ /* span is double horizontal line */
};

/*
 * A row of data in a table.
 */
struct	tbl_span {
	struct tbl_opts	 *opts;
	struct tbl_row	 *layout; /* layout row */
	struct tbl_dat	 *first;
	struct tbl_dat	 *last;
	struct tbl_span	 *prev;
	struct tbl_span	 *next;
	int		  line; /* parse line */
	enum tbl_spant	  pos;
};

enum	eqn_boxt {
	EQN_TEXT, /* text (number, variable, whatever) */
	EQN_SUBEXPR, /* nested `eqn' subexpression */
	EQN_LIST, /* list (braces, etc.) */
	EQN_PILE, /* vertical pile */
	EQN_MATRIX /* pile of piles */
};

enum	eqn_fontt {
	EQNFONT_NONE = 0,
	EQNFONT_ROMAN,
	EQNFONT_BOLD,
	EQNFONT_FAT,
	EQNFONT_ITALIC,
	EQNFONT__MAX
};

enum	eqn_post {
	EQNPOS_NONE = 0,
	EQNPOS_SUP,
	EQNPOS_SUBSUP,
	EQNPOS_SUB,
	EQNPOS_TO,
	EQNPOS_FROM,
	EQNPOS_FROMTO,
	EQNPOS_OVER,
	EQNPOS_SQRT,
	EQNPOS__MAX
};

enum	eqn_pilet {
	EQNPILE_NONE = 0,
	EQNPILE_PILE,
	EQNPILE_CPILE,
	EQNPILE_RPILE,
	EQNPILE_LPILE,
	EQNPILE_COL,
	EQNPILE_CCOL,
	EQNPILE_RCOL,
	EQNPILE_LCOL,
	EQNPILE__MAX
};

 /*
 * A "box" is a parsed mathematical expression as defined by the eqn.7
 * grammar.
 */
struct	eqn_box {
	int		  size; /* font size of expression */
#define	EQN_DEFSIZE	  INT_MIN
	enum eqn_boxt	  type; /* type of node */
	struct eqn_box	 *first; /* first child node */
	struct eqn_box	 *last; /* last child node */
	struct eqn_box	 *next; /* node sibling */
	struct eqn_box	 *prev; /* node sibling */
	struct eqn_box	 *parent; /* node sibling */
	char		 *text; /* text (or NULL) */
	char		 *left; /* fence left-hand */
	char		 *right; /* fence right-hand */
	char		 *top; /* expression over-symbol */
	char		 *bottom; /* expression under-symbol */
	size_t		  args; /* arguments in parent */
	size_t		  expectargs; /* max arguments in parent */
	enum eqn_post	  pos; /* position of next box */
	enum eqn_fontt	  font; /* font of box */
	enum eqn_pilet	  pile; /* equation piling */
};

/*
 * Parse options.
 */
#define	MPARSE_MDOC	1  /* assume -mdoc */
#define	MPARSE_MAN	2  /* assume -man */
#define	MPARSE_SO	4  /* honour .so requests */
#define	MPARSE_QUICK	8  /* abort the parse early */
#define	MPARSE_UTF8	16 /* accept UTF-8 input */
#define	MPARSE_LATIN1	32 /* accept ISO-LATIN-1 input */

enum	mandoc_os {
	MANDOC_OS_OTHER = 0,
	MANDOC_OS_NETBSD,
	MANDOC_OS_OPENBSD
};

enum	mandoc_esc {
	ESCAPE_ERROR = 0, /* bail! unparsable escape */
	ESCAPE_IGNORE, /* escape to be ignored */
	ESCAPE_SPECIAL, /* a regular special character */
	ESCAPE_FONT, /* a generic font mode */
	ESCAPE_FONTBOLD, /* bold font mode */
	ESCAPE_FONTITALIC, /* italic font mode */
	ESCAPE_FONTBI, /* bold italic font mode */
	ESCAPE_FONTROMAN, /* roman font mode */
	ESCAPE_FONTPREV, /* previous font mode */
	ESCAPE_NUMBERED, /* a numbered glyph */
	ESCAPE_UNICODE, /* a unicode codepoint */
	ESCAPE_BREAK, /* break the output line */
	ESCAPE_NOSPACE, /* suppress space if the last on a line */
	ESCAPE_HORIZ, /* horizontal movement */
	ESCAPE_HLINE, /* horizontal line drawing */
	ESCAPE_SKIPCHAR, /* skip the next character */
	ESCAPE_OVERSTRIKE /* overstrike all chars in the argument */
};

typedef	void	(*mandocmsg)(enum mandocerr, enum mandoclevel,
			const char *, int, int, const char *);


struct	mparse;
struct	roff_man;

enum mandoc_esc	  mandoc_escape(const char **, const char **, int *);
void		  mchars_alloc(void);
void		  mchars_free(void);
int		  mchars_num2char(const char *, size_t);
const char	 *mchars_uc2str(int);
int		  mchars_num2uc(const char *, size_t);
int		  mchars_spec2cp(const char *, size_t);
const char	 *mchars_spec2str(const char *, size_t, size_t *);
struct mparse	 *mparse_alloc(int, enum mandocerr, mandocmsg,
			enum mandoc_os, const char *);
void		  mparse_free(struct mparse *);
void		  mparse_keep(struct mparse *);
int		  mparse_open(struct mparse *, const char *);
enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
enum mandoclevel  mparse_readmem(struct mparse *, void *, size_t,
			const char *);
void		  mparse_reset(struct mparse *);
void		  mparse_result(struct mparse *,
			struct roff_man **, char **);
const char	 *mparse_getkeep(const struct mparse *);
const char	 *mparse_strerror(enum mandocerr);
const char	 *mparse_strlevel(enum mandoclevel);
void		  mparse_updaterc(struct mparse *, enum mandoclevel *);