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Up to [cvsweb.bsd.lv] / mandoc

Fully support explicit tagging of .Sh and .Ss.
This fixes the offset of two lines in terminal output
and this improves HTML output by putting the id= attribute
and <a> element into the respective <h1> or <h2> element rather
than writing an additional <mark> element.

To that end, introduce node flags NODE_ID (to make the node a link
target, for example by writing an HTML id= attribute or by calling
tag_put()) and NODE_HREF (to make the node a link source, used only
in HTML output, used only to write an <a class="permalink"> element).

In particular:
* In the validator, generalize the concept of the "next node"
such that it also works before .Sh and .Ss.
* If the first argument of .Tg is empty, don't forget to complain
if there are additional arguments, which will be ignored.
* In the terminal formatter, support writing of explicit tags
for all kinds of nodes, not just for .Tg.
* In deroff(), allow nodes to have an explicit string representation
even when they aren't text nodes.  Use this for explicitly tagged
section headers.  Suprisingly, this is sufficient to make HTML
output work, without explicit code changes in the HTML formatter.
* In syntax tree output, display NODE_ID and NODE_HREF.

/*	$Id: roff.h,v 1.72 2020/02/27 21:43:45 schwarze Exp $	*/
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2013-2015, 2017-2020 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.
 *
 * Common data types for all syntax trees and related functions.
 */

struct	ohash;
struct	mdoc_arg;
union	mdoc_data;
struct	tbl_span;
struct	eqn_box;

enum	roff_macroset {
	MACROSET_NONE = 0,
	MACROSET_MDOC,
	MACROSET_MAN
};

enum	roff_sec {
	SEC_NONE = 0,
	SEC_NAME,
	SEC_LIBRARY,
	SEC_SYNOPSIS,
	SEC_DESCRIPTION,
	SEC_CONTEXT,
	SEC_IMPLEMENTATION,	/* IMPLEMENTATION NOTES */
	SEC_RETURN_VALUES,
	SEC_ENVIRONMENT,
	SEC_FILES,
	SEC_EXIT_STATUS,
	SEC_EXAMPLES,
	SEC_DIAGNOSTICS,
	SEC_COMPATIBILITY,
	SEC_ERRORS,
	SEC_SEE_ALSO,
	SEC_STANDARDS,
	SEC_HISTORY,
	SEC_AUTHORS,
	SEC_CAVEATS,
	SEC_BUGS,
	SEC_SECURITY,
	SEC_CUSTOM,
	SEC__MAX
};

enum	roff_type {
	ROFFT_ROOT,
	ROFFT_BLOCK,
	ROFFT_HEAD,
	ROFFT_BODY,
	ROFFT_TAIL,
	ROFFT_ELEM,
	ROFFT_TEXT,
	ROFFT_COMMENT,
	ROFFT_TBL,
	ROFFT_EQN
};

enum	roff_tok {
	ROFF_br = 0,
	ROFF_ce,
	ROFF_fi,
	ROFF_ft,
	ROFF_ll,
	ROFF_mc,
	ROFF_nf,
	ROFF_po,
	ROFF_rj,
	ROFF_sp,
	ROFF_ta,
	ROFF_ti,
	ROFF_MAX,
	ROFF_ab,
	ROFF_ad,
	ROFF_af,
	ROFF_aln,
	ROFF_als,
	ROFF_am,
	ROFF_am1,
	ROFF_ami,
	ROFF_ami1,
	ROFF_as,
	ROFF_as1,
	ROFF_asciify,
	ROFF_backtrace,
	ROFF_bd,
	ROFF_bleedat,
	ROFF_blm,
	ROFF_box,
	ROFF_boxa,
	ROFF_bp,
	ROFF_BP,
	ROFF_break,
	ROFF_breakchar,
	ROFF_brnl,
	ROFF_brp,
	ROFF_brpnl,
	ROFF_c2,
	ROFF_cc,
	ROFF_cf,
	ROFF_cflags,
	ROFF_ch,
	ROFF_char,
	ROFF_chop,
	ROFF_class,
	ROFF_close,
	ROFF_CL,
	ROFF_color,
	ROFF_composite,
	ROFF_continue,
	ROFF_cp,
	ROFF_cropat,
	ROFF_cs,
	ROFF_cu,
	ROFF_da,
	ROFF_dch,
	ROFF_Dd,
	ROFF_de,
	ROFF_de1,
	ROFF_defcolor,
	ROFF_dei,
	ROFF_dei1,
	ROFF_device,
	ROFF_devicem,
	ROFF_di,
	ROFF_do,
	ROFF_ds,
	ROFF_ds1,
	ROFF_dwh,
	ROFF_dt,
	ROFF_ec,
	ROFF_ecr,
	ROFF_ecs,
	ROFF_el,
	ROFF_em,
	ROFF_EN,
	ROFF_eo,
	ROFF_EP,
	ROFF_EQ,
	ROFF_errprint,
	ROFF_ev,
	ROFF_evc,
	ROFF_ex,
	ROFF_fallback,
	ROFF_fam,
	ROFF_fc,
	ROFF_fchar,
	ROFF_fcolor,
	ROFF_fdeferlig,
	ROFF_feature,
	ROFF_fkern,
	ROFF_fl,
	ROFF_flig,
	ROFF_fp,
	ROFF_fps,
	ROFF_fschar,
	ROFF_fspacewidth,
	ROFF_fspecial,
	ROFF_ftr,
	ROFF_fzoom,
	ROFF_gcolor,
	ROFF_hc,
	ROFF_hcode,
	ROFF_hidechar,
	ROFF_hla,
	ROFF_hlm,
	ROFF_hpf,
	ROFF_hpfa,
	ROFF_hpfcode,
	ROFF_hw,
	ROFF_hy,
	ROFF_hylang,
	ROFF_hylen,
	ROFF_hym,
	ROFF_hypp,
	ROFF_hys,
	ROFF_ie,
	ROFF_if,
	ROFF_ig,
	/* MAN_in; ignored in mdoc(7) */
	ROFF_index,
	ROFF_it,
	ROFF_itc,
	ROFF_IX,
	ROFF_kern,
	ROFF_kernafter,
	ROFF_kernbefore,
	ROFF_kernpair,
	ROFF_lc,
	ROFF_lc_ctype,
	ROFF_lds,
	ROFF_length,
	ROFF_letadj,
	ROFF_lf,
	ROFF_lg,
	ROFF_lhang,
	ROFF_linetabs,
	ROFF_lnr,
	ROFF_lnrf,
	ROFF_lpfx,
	ROFF_ls,
	ROFF_lsm,
	ROFF_lt,
	ROFF_mediasize,
	ROFF_minss,
	ROFF_mk,
	ROFF_mso,
	ROFF_na,
	ROFF_ne,
	ROFF_nh,
	ROFF_nhychar,
	ROFF_nm,
	ROFF_nn,
	ROFF_nop,
	ROFF_nr,
	ROFF_nrf,
	ROFF_nroff,
	ROFF_ns,
	ROFF_nx,
	ROFF_open,
	ROFF_opena,
	ROFF_os,
	ROFF_output,
	ROFF_padj,
	ROFF_papersize,
	ROFF_pc,
	ROFF_pev,
	ROFF_pi,
	ROFF_PI,
	ROFF_pl,
	ROFF_pm,
	ROFF_pn,
	ROFF_pnr,
	ROFF_ps,
	ROFF_psbb,
	ROFF_pshape,
	ROFF_pso,
	ROFF_ptr,
	ROFF_pvs,
	ROFF_rchar,
	ROFF_rd,
	ROFF_recursionlimit,
	ROFF_return,
	ROFF_rfschar,
	ROFF_rhang,
	ROFF_rm,
	ROFF_rn,
	ROFF_rnn,
	ROFF_rr,
	ROFF_rs,
	ROFF_rt,
	ROFF_schar,
	ROFF_sentchar,
	ROFF_shc,
	ROFF_shift,
	ROFF_sizes,
	ROFF_so,
	ROFF_spacewidth,
	ROFF_special,
	ROFF_spreadwarn,
	ROFF_ss,
	ROFF_sty,
	ROFF_substring,
	ROFF_sv,
	ROFF_sy,
	ROFF_T_,
	ROFF_tc,
	ROFF_TE,
	ROFF_TH,
	ROFF_tkf,
	ROFF_tl,
	ROFF_tm,
	ROFF_tm1,
	ROFF_tmc,
	ROFF_tr,
	ROFF_track,
	ROFF_transchar,
	ROFF_trf,
	ROFF_trimat,
	ROFF_trin,
	ROFF_trnt,
	ROFF_troff,
	ROFF_TS,
	ROFF_uf,
	ROFF_ul,
	ROFF_unformat,
	ROFF_unwatch,
	ROFF_unwatchn,
	ROFF_vpt,
	ROFF_vs,
	ROFF_warn,
	ROFF_warnscale,
	ROFF_watch,
	ROFF_watchlength,
	ROFF_watchn,
	ROFF_wh,
	ROFF_while,
	ROFF_write,
	ROFF_writec,
	ROFF_writem,
	ROFF_xflag,
	ROFF_cblock,
	ROFF_RENAMED,
	ROFF_USERDEF,
	TOKEN_NONE,
	MDOC_Dd,
	MDOC_Dt,
	MDOC_Os,
	MDOC_Sh,
	MDOC_Ss,
	MDOC_Pp,
	MDOC_D1,
	MDOC_Dl,
	MDOC_Bd,
	MDOC_Ed,
	MDOC_Bl,
	MDOC_El,
	MDOC_It,
	MDOC_Ad,
	MDOC_An,
	MDOC_Ap,
	MDOC_Ar,
	MDOC_Cd,
	MDOC_Cm,
	MDOC_Dv,
	MDOC_Er,
	MDOC_Ev,
	MDOC_Ex,
	MDOC_Fa,
	MDOC_Fd,
	MDOC_Fl,
	MDOC_Fn,
	MDOC_Ft,
	MDOC_Ic,
	MDOC_In,
	MDOC_Li,
	MDOC_Nd,
	MDOC_Nm,
	MDOC_Op,
	MDOC_Ot,
	MDOC_Pa,
	MDOC_Rv,
	MDOC_St,
	MDOC_Va,
	MDOC_Vt,
	MDOC_Xr,
	MDOC__A,
	MDOC__B,
	MDOC__D,
	MDOC__I,
	MDOC__J,
	MDOC__N,
	MDOC__O,
	MDOC__P,
	MDOC__R,
	MDOC__T,
	MDOC__V,
	MDOC_Ac,
	MDOC_Ao,
	MDOC_Aq,
	MDOC_At,
	MDOC_Bc,
	MDOC_Bf,
	MDOC_Bo,
	MDOC_Bq,
	MDOC_Bsx,
	MDOC_Bx,
	MDOC_Db,
	MDOC_Dc,
	MDOC_Do,
	MDOC_Dq,
	MDOC_Ec,
	MDOC_Ef,
	MDOC_Em,
	MDOC_Eo,
	MDOC_Fx,
	MDOC_Ms,
	MDOC_No,
	MDOC_Ns,
	MDOC_Nx,
	MDOC_Ox,
	MDOC_Pc,
	MDOC_Pf,
	MDOC_Po,
	MDOC_Pq,
	MDOC_Qc,
	MDOC_Ql,
	MDOC_Qo,
	MDOC_Qq,
	MDOC_Re,
	MDOC_Rs,
	MDOC_Sc,
	MDOC_So,
	MDOC_Sq,
	MDOC_Sm,
	MDOC_Sx,
	MDOC_Sy,
	MDOC_Tn,
	MDOC_Ux,
	MDOC_Xc,
	MDOC_Xo,
	MDOC_Fo,
	MDOC_Fc,
	MDOC_Oo,
	MDOC_Oc,
	MDOC_Bk,
	MDOC_Ek,
	MDOC_Bt,
	MDOC_Hf,
	MDOC_Fr,
	MDOC_Ud,
	MDOC_Lb,
	MDOC_Lp,
	MDOC_Lk,
	MDOC_Mt,
	MDOC_Brq,
	MDOC_Bro,
	MDOC_Brc,
	MDOC__C,
	MDOC_Es,
	MDOC_En,
	MDOC_Dx,
	MDOC__Q,
	MDOC__U,
	MDOC_Ta,
	MDOC_Tg,
	MDOC_MAX,
	MAN_TH,
	MAN_SH,
	MAN_SS,
	MAN_TP,
	MAN_TQ,
	MAN_LP,
	MAN_PP,
	MAN_P,
	MAN_IP,
	MAN_HP,
	MAN_SM,
	MAN_SB,
	MAN_BI,
	MAN_IB,
	MAN_BR,
	MAN_RB,
	MAN_R,
	MAN_B,
	MAN_I,
	MAN_IR,
	MAN_RI,
	MAN_RE,
	MAN_RS,
	MAN_DT,
	MAN_UC,
	MAN_PD,
	MAN_AT,
	MAN_in,
	MAN_SY,
	MAN_YS,
	MAN_OP,
	MAN_EX,
	MAN_EE,
	MAN_UR,
	MAN_UE,
	MAN_MT,
	MAN_ME,
	MAN_MAX
};

/*
 * Indicates that a BODY's formatting has ended, but
 * the scope is still open.  Used for badly nested blocks.
 */
enum	mdoc_endbody {
	ENDBODY_NOT = 0,
	ENDBODY_SPACE	/* Is broken: append a space. */
};

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

struct	roff_node {
	struct roff_node *parent;  /* Parent AST node. */
	struct roff_node *child;   /* First child AST node. */
	struct roff_node *last;    /* Last child AST node. */
	struct roff_node *next;    /* Sibling AST node. */
	struct roff_node *prev;    /* Prior sibling AST node. */
	struct roff_node *head;    /* BLOCK */
	struct roff_node *body;    /* BLOCK/ENDBODY */
	struct roff_node *tail;    /* BLOCK */
	struct mdoc_arg	 *args;    /* BLOCK/ELEM */
	union mdoc_data	 *norm;    /* Normalized arguments. */
	char		 *string;  /* TEXT */
	struct tbl_span	 *span;    /* TBL */
	struct eqn_box	 *eqn;     /* EQN */
	int		  line;    /* Input file line number. */
	int		  pos;     /* Input file column number. */
	int		  flags;
#define	NODE_VALID	 (1 << 0)  /* Has been validated. */
#define	NODE_ENDED	 (1 << 1)  /* Gone past body end mark. */
#define	NODE_BROKEN	 (1 << 2)  /* Must validate parent when ending. */
#define	NODE_LINE	 (1 << 3)  /* First macro/text on line. */
#define	NODE_DELIMO	 (1 << 4)
#define	NODE_DELIMC	 (1 << 5)
#define	NODE_EOS	 (1 << 6)  /* At sentence boundary. */
#define	NODE_SYNPRETTY	 (1 << 7)  /* SYNOPSIS-style formatting. */
#define	NODE_NOFILL	 (1 << 8)  /* Fill mode switched off. */
#define	NODE_NOSRC	 (1 << 9)  /* Generated node, not in input file. */
#define	NODE_NOPRT	 (1 << 10) /* Shall not print anything. */
#define	NODE_ID		 (1 << 11) /* Target for deep linking. */
#define	NODE_HREF	 (1 << 12) /* Link to another place in this page. */
	int		  prev_font; /* Before entering this node. */
	int		  aux;     /* Decoded node data, type-dependent. */
	enum roff_tok	  tok;     /* Request or macro ID. */
	enum roff_type	  type;    /* AST node type. */
	enum roff_sec	  sec;     /* Current named section. */
	enum mdoc_endbody end;     /* BODY */
};

struct	roff_meta {
	struct roff_node *first;   /* The first node parsed. */
	char		 *msec;    /* Manual section, usually a digit. */
	char		 *vol;     /* Manual volume title. */
	char		 *os;      /* Operating system. */
	char		 *arch;    /* Machine architecture. */
	char		 *title;   /* Manual title, usually CAPS. */
	char		 *name;    /* Leading manual name. */
	char		 *date;    /* Normalized date. */
	char		 *sodest;  /* .so target file name or NULL. */
	int		  hasbody; /* Document is not empty. */
	int		  rcsids;  /* Bits indexed by enum mandoc_os. */
	enum mandoc_os	  os_e;    /* Operating system. */
	enum roff_macroset macroset; /* Kind of high-level macros used. */
};

extern	const char *const *roff_name;


int		  arch_valid(const char *, enum mandoc_os);
void		  deroff(char **, const struct roff_node *);
struct roff_node *roff_node_child(struct roff_node *);
struct roff_node *roff_node_next(struct roff_node *);
struct roff_node *roff_node_prev(struct roff_node *);
int		  roff_node_transparent(struct roff_node *);