[BACK]Return to mdoc_argv.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

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

Revision 1.99, Sat Nov 29 03:37:44 2014 UTC (6 years, 8 months ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_13_2
Changes since 1.98: +6 -11 lines

Provide a helper function macro_or_word() and use it to prune the
same chunk of argument parsing code out of five of the eight callback
functions.  The other three have too much special handling to
participate.
As a bonus, let lookup() and mdoc_args() deal with line macros and
retire the lookup_raw() helper and the mdoc_zargs() internal interface
function.
No functional change, minus 40 lines of code.

/*	$OpenBSD$ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2012, 2014 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 AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
 */
#include "config.h"

#include <sys/types.h>

#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "mdoc.h"
#include "mandoc.h"
#include "mandoc_aux.h"
#include "libmdoc.h"
#include "libmandoc.h"

#define	MULTI_STEP	 5 /* pre-allocate argument values */
#define	DELIMSZ		 6 /* max possible size of a delimiter */

enum	argsflag {
	ARGSFL_NONE = 0,
	ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
	ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
};

enum	argvflag {
	ARGV_NONE, /* no args to flag (e.g., -split) */
	ARGV_SINGLE, /* one arg to flag (e.g., -file xxx)  */
	ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */
};

struct	mdocarg {
	enum argsflag	 flags;
	const enum mdocargt *argvs;
};

static	void		 argn_free(struct mdoc_arg *, int);
static	enum margserr	 args(struct mdoc *, int, int *,
				char *, enum argsflag, char **);
static	int		 args_checkpunct(const char *, int);
static	void		 argv_multi(struct mdoc *, int,
				struct mdoc_argv *, int *, char *);
static	void		 argv_single(struct mdoc *, int,
				struct mdoc_argv *, int *, char *);

static	const enum argvflag argvflags[MDOC_ARG_MAX] = {
	ARGV_NONE,	/* MDOC_Split */
	ARGV_NONE,	/* MDOC_Nosplit */
	ARGV_NONE,	/* MDOC_Ragged */
	ARGV_NONE,	/* MDOC_Unfilled */
	ARGV_NONE,	/* MDOC_Literal */
	ARGV_SINGLE,	/* MDOC_File */
	ARGV_SINGLE,	/* MDOC_Offset */
	ARGV_NONE,	/* MDOC_Bullet */
	ARGV_NONE,	/* MDOC_Dash */
	ARGV_NONE,	/* MDOC_Hyphen */
	ARGV_NONE,	/* MDOC_Item */
	ARGV_NONE,	/* MDOC_Enum */
	ARGV_NONE,	/* MDOC_Tag */
	ARGV_NONE,	/* MDOC_Diag */
	ARGV_NONE,	/* MDOC_Hang */
	ARGV_NONE,	/* MDOC_Ohang */
	ARGV_NONE,	/* MDOC_Inset */
	ARGV_MULTI,	/* MDOC_Column */
	ARGV_SINGLE,	/* MDOC_Width */
	ARGV_NONE,	/* MDOC_Compact */
	ARGV_NONE,	/* MDOC_Std */
	ARGV_NONE,	/* MDOC_Filled */
	ARGV_NONE,	/* MDOC_Words */
	ARGV_NONE,	/* MDOC_Emphasis */
	ARGV_NONE,	/* MDOC_Symbolic */
	ARGV_NONE	/* MDOC_Symbolic */
};

static	const enum mdocargt args_Ex[] = {
	MDOC_Std,
	MDOC_ARG_MAX
};

static	const enum mdocargt args_An[] = {
	MDOC_Split,
	MDOC_Nosplit,
	MDOC_ARG_MAX
};

static	const enum mdocargt args_Bd[] = {
	MDOC_Ragged,
	MDOC_Unfilled,
	MDOC_Filled,
	MDOC_Literal,
	MDOC_File,
	MDOC_Offset,
	MDOC_Compact,
	MDOC_Centred,
	MDOC_ARG_MAX
};

static	const enum mdocargt args_Bf[] = {
	MDOC_Emphasis,
	MDOC_Literal,
	MDOC_Symbolic,
	MDOC_ARG_MAX
};

static	const enum mdocargt args_Bk[] = {
	MDOC_Words,
	MDOC_ARG_MAX
};

static	const enum mdocargt args_Bl[] = {
	MDOC_Bullet,
	MDOC_Dash,
	MDOC_Hyphen,
	MDOC_Item,
	MDOC_Enum,
	MDOC_Tag,
	MDOC_Diag,
	MDOC_Hang,
	MDOC_Ohang,
	MDOC_Inset,
	MDOC_Column,
	MDOC_Width,
	MDOC_Offset,
	MDOC_Compact,
	MDOC_Nested,
	MDOC_ARG_MAX
};

static	const struct mdocarg mdocargs[MDOC_MAX] = {
	{ ARGSFL_DELIM, NULL }, /* Ap */
	{ ARGSFL_NONE, NULL }, /* Dd */
	{ ARGSFL_NONE, NULL }, /* Dt */
	{ ARGSFL_NONE, NULL }, /* Os */
	{ ARGSFL_NONE, NULL }, /* Sh */
	{ ARGSFL_NONE, NULL }, /* Ss */
	{ ARGSFL_NONE, NULL }, /* Pp */
	{ ARGSFL_DELIM, NULL }, /* D1 */
	{ ARGSFL_DELIM, NULL }, /* Dl */
	{ ARGSFL_NONE, args_Bd }, /* Bd */
	{ ARGSFL_NONE, NULL }, /* Ed */
	{ ARGSFL_NONE, args_Bl }, /* Bl */
	{ ARGSFL_NONE, NULL }, /* El */
	{ ARGSFL_NONE, NULL }, /* It */
	{ ARGSFL_DELIM, NULL }, /* Ad */
	{ ARGSFL_DELIM, args_An }, /* An */
	{ ARGSFL_DELIM, NULL }, /* Ar */
	{ ARGSFL_DELIM, NULL }, /* Cd */
	{ ARGSFL_DELIM, NULL }, /* Cm */
	{ ARGSFL_DELIM, NULL }, /* Dv */
	{ ARGSFL_DELIM, NULL }, /* Er */
	{ ARGSFL_DELIM, NULL }, /* Ev */
	{ ARGSFL_NONE, args_Ex }, /* Ex */
	{ ARGSFL_DELIM, NULL }, /* Fa */
	{ ARGSFL_NONE, NULL }, /* Fd */
	{ ARGSFL_DELIM, NULL }, /* Fl */
	{ ARGSFL_DELIM, NULL }, /* Fn */
	{ ARGSFL_DELIM, NULL }, /* Ft */
	{ ARGSFL_DELIM, NULL }, /* Ic */
	{ ARGSFL_DELIM, NULL }, /* In */
	{ ARGSFL_DELIM, NULL }, /* Li */
	{ ARGSFL_NONE, NULL }, /* Nd */
	{ ARGSFL_DELIM, NULL }, /* Nm */
	{ ARGSFL_DELIM, NULL }, /* Op */
	{ ARGSFL_DELIM, NULL }, /* Ot */
	{ ARGSFL_DELIM, NULL }, /* Pa */
	{ ARGSFL_NONE, args_Ex }, /* Rv */
	{ ARGSFL_DELIM, NULL }, /* St */
	{ ARGSFL_DELIM, NULL }, /* Va */
	{ ARGSFL_DELIM, NULL }, /* Vt */
	{ ARGSFL_DELIM, NULL }, /* Xr */
	{ ARGSFL_NONE, NULL }, /* %A */
	{ ARGSFL_NONE, NULL }, /* %B */
	{ ARGSFL_NONE, NULL }, /* %D */
	{ ARGSFL_NONE, NULL }, /* %I */
	{ ARGSFL_NONE, NULL }, /* %J */
	{ ARGSFL_NONE, NULL }, /* %N */
	{ ARGSFL_NONE, NULL }, /* %O */
	{ ARGSFL_NONE, NULL }, /* %P */
	{ ARGSFL_NONE, NULL }, /* %R */
	{ ARGSFL_NONE, NULL }, /* %T */
	{ ARGSFL_NONE, NULL }, /* %V */
	{ ARGSFL_DELIM, NULL }, /* Ac */
	{ ARGSFL_NONE, NULL }, /* Ao */
	{ ARGSFL_DELIM, NULL }, /* Aq */
	{ ARGSFL_DELIM, NULL }, /* At */
	{ ARGSFL_DELIM, NULL }, /* Bc */
	{ ARGSFL_NONE, args_Bf }, /* Bf */
	{ ARGSFL_NONE, NULL }, /* Bo */
	{ ARGSFL_DELIM, NULL }, /* Bq */
	{ ARGSFL_DELIM, NULL }, /* Bsx */
	{ ARGSFL_DELIM, NULL }, /* Bx */
	{ ARGSFL_NONE, NULL }, /* Db */
	{ ARGSFL_DELIM, NULL }, /* Dc */
	{ ARGSFL_NONE, NULL }, /* Do */
	{ ARGSFL_DELIM, NULL }, /* Dq */
	{ ARGSFL_DELIM, NULL }, /* Ec */
	{ ARGSFL_NONE, NULL }, /* Ef */
	{ ARGSFL_DELIM, NULL }, /* Em */
	{ ARGSFL_NONE, NULL }, /* Eo */
	{ ARGSFL_DELIM, NULL }, /* Fx */
	{ ARGSFL_DELIM, NULL }, /* Ms */
	{ ARGSFL_DELIM, NULL }, /* No */
	{ ARGSFL_DELIM, NULL }, /* Ns */
	{ ARGSFL_DELIM, NULL }, /* Nx */
	{ ARGSFL_DELIM, NULL }, /* Ox */
	{ ARGSFL_DELIM, NULL }, /* Pc */
	{ ARGSFL_DELIM, NULL }, /* Pf */
	{ ARGSFL_NONE, NULL }, /* Po */
	{ ARGSFL_DELIM, NULL }, /* Pq */
	{ ARGSFL_DELIM, NULL }, /* Qc */
	{ ARGSFL_DELIM, NULL }, /* Ql */
	{ ARGSFL_NONE, NULL }, /* Qo */
	{ ARGSFL_DELIM, NULL }, /* Qq */
	{ ARGSFL_NONE, NULL }, /* Re */
	{ ARGSFL_NONE, NULL }, /* Rs */
	{ ARGSFL_DELIM, NULL }, /* Sc */
	{ ARGSFL_NONE, NULL }, /* So */
	{ ARGSFL_DELIM, NULL }, /* Sq */
	{ ARGSFL_NONE, NULL }, /* Sm */
	{ ARGSFL_DELIM, NULL }, /* Sx */
	{ ARGSFL_DELIM, NULL }, /* Sy */
	{ ARGSFL_DELIM, NULL }, /* Tn */
	{ ARGSFL_DELIM, NULL }, /* Ux */
	{ ARGSFL_DELIM, NULL }, /* Xc */
	{ ARGSFL_NONE, NULL }, /* Xo */
	{ ARGSFL_NONE, NULL }, /* Fo */
	{ ARGSFL_DELIM, NULL }, /* Fc */
	{ ARGSFL_NONE, NULL }, /* Oo */
	{ ARGSFL_DELIM, NULL }, /* Oc */
	{ ARGSFL_NONE, args_Bk }, /* Bk */
	{ ARGSFL_NONE, NULL }, /* Ek */
	{ ARGSFL_NONE, NULL }, /* Bt */
	{ ARGSFL_NONE, NULL }, /* Hf */
	{ ARGSFL_DELIM, NULL }, /* Fr */
	{ ARGSFL_NONE, NULL }, /* Ud */
	{ ARGSFL_DELIM, NULL }, /* Lb */
	{ ARGSFL_NONE, NULL }, /* Lp */
	{ ARGSFL_DELIM, NULL }, /* Lk */
	{ ARGSFL_DELIM, NULL }, /* Mt */
	{ ARGSFL_DELIM, NULL }, /* Brq */
	{ ARGSFL_NONE, NULL }, /* Bro */
	{ ARGSFL_DELIM, NULL }, /* Brc */
	{ ARGSFL_NONE, NULL }, /* %C */
	{ ARGSFL_NONE, NULL }, /* Es */
	{ ARGSFL_DELIM, NULL }, /* En */
	{ ARGSFL_DELIM, NULL }, /* Dx */
	{ ARGSFL_NONE, NULL }, /* %Q */
	{ ARGSFL_NONE, NULL }, /* br */
	{ ARGSFL_NONE, NULL }, /* sp */
	{ ARGSFL_NONE, NULL }, /* %U */
	{ ARGSFL_NONE, NULL }, /* Ta */
	{ ARGSFL_NONE, NULL }, /* ll */
};


/*
 * Parse flags and their arguments from the input line.
 * These come in the form -flag [argument ...].
 * Some flags take no argument, some one, some multiple.
 */
void
mdoc_argv(struct mdoc *mdoc, int line, enum mdoct tok,
	struct mdoc_arg **reta, int *pos, char *buf)
{
	struct mdoc_argv	  tmpv;
	struct mdoc_argv	**retv;
	const enum mdocargt	 *argtable;
	char			 *argname;
	int			  ipos, retc;
	char			  savechar;

	*reta = NULL;

	/* Which flags does this macro support? */

	argtable = mdocargs[tok].argvs;
	if (argtable == NULL)
		return;

	/* Loop over the flags on the input line. */

	ipos = *pos;
	while (buf[ipos] == '-') {

		/* Seek to the first unescaped space. */

		for (argname = buf + ++ipos; buf[ipos] != '\0'; ipos++)
			if (buf[ipos] == ' ' && buf[ipos - 1] != '\\')
				break;

		/*
		 * We want to nil-terminate the word to look it up.
		 * But we may not have a flag, in which case we need
		 * to restore the line as-is.  So keep around the
		 * stray byte, which we'll reset upon exiting.
		 */

		if ((savechar = buf[ipos]) != '\0')
			buf[ipos++] = '\0';

		/*
		 * Now look up the word as a flag.  Use temporary
		 * storage that we'll copy into the node's flags.
		 */

		while ((tmpv.arg = *argtable++) != MDOC_ARG_MAX)
			if ( ! strcmp(argname, mdoc_argnames[tmpv.arg]))
				break;

		/* If it isn't a flag, restore the saved byte. */

		if (tmpv.arg == MDOC_ARG_MAX) {
			if (savechar != '\0')
				buf[ipos - 1] = savechar;
			break;
		}

		/* Read to the next word (the first argument). */

		while (buf[ipos] == ' ')
			ipos++;

		/* Parse the arguments of the flag. */

		tmpv.line  = line;
		tmpv.pos   = ipos;
		tmpv.sz    = 0;
		tmpv.value = NULL;

		switch (argvflags[tmpv.arg]) {
		case ARGV_SINGLE:
			argv_single(mdoc, line, &tmpv, &ipos, buf);
			break;
		case ARGV_MULTI:
			argv_multi(mdoc, line, &tmpv, &ipos, buf);
			break;
		case ARGV_NONE:
			break;
		}

		/* Append to the return values. */

		if (*reta == NULL)
			*reta = mandoc_calloc(1, sizeof(**reta));

		retc = ++(*reta)->argc;
		retv = &(*reta)->argv;
		*retv = mandoc_reallocarray(*retv, retc, sizeof(**retv));
		memcpy(*retv + retc - 1, &tmpv, sizeof(**retv));

		/* Prepare for parsing the next flag. */

		*pos = ipos;
		argtable = mdocargs[tok].argvs;
	}
}

void
mdoc_argv_free(struct mdoc_arg *p)
{
	int		 i;

	if (NULL == p)
		return;

	if (p->refcnt) {
		--(p->refcnt);
		if (p->refcnt)
			return;
	}
	assert(p->argc);

	for (i = (int)p->argc - 1; i >= 0; i--)
		argn_free(p, i);

	free(p->argv);
	free(p);
}

static void
argn_free(struct mdoc_arg *p, int iarg)
{
	struct mdoc_argv *arg;
	int		  j;

	arg = &p->argv[iarg];

	if (arg->sz && arg->value) {
		for (j = (int)arg->sz - 1; j >= 0; j--)
			free(arg->value[j]);
		free(arg->value);
	}

	for (--p->argc; iarg < (int)p->argc; iarg++)
		p->argv[iarg] = p->argv[iarg+1];
}

enum margserr
mdoc_args(struct mdoc *mdoc, int line, int *pos,
		char *buf, enum mdoct tok, char **v)
{
	struct mdoc_node *n;
	char		 *v_local;
	enum argsflag	  fl;

	if (v == NULL)
		v = &v_local;
	fl = tok == MDOC_MAX ? ARGSFL_NONE : mdocargs[tok].flags;
	if (tok != MDOC_It)
		return(args(mdoc, line, pos, buf, fl, v));

	/*
	 * We know that we're in an `It', so it's reasonable to expect
	 * us to be sitting in a `Bl'.  Someday this may not be the case
	 * (if we allow random `It's sitting out there), so provide a
	 * safe fall-back into the default behaviour.
	 */

	for (n = mdoc->last; n; n = n->parent)
		if (MDOC_Bl == n->tok)
			if (LIST_column == n->norm->Bl.type) {
				fl = ARGSFL_TABSEP;
				break;
			}

	return(args(mdoc, line, pos, buf, fl, v));
}

static enum margserr
args(struct mdoc *mdoc, int line, int *pos,
		char *buf, enum argsflag fl, char **v)
{
	char		*p, *pp;
	int		 pairs;
	enum margserr	 rc;

	if ('\0' == buf[*pos]) {
		if (MDOC_PPHRASE & mdoc->flags)
			return(ARGS_EOLN);
		/*
		 * If we're not in a partial phrase and the flag for
		 * being a phrase literal is still set, the punctuation
		 * is unterminated.
		 */
		if (MDOC_PHRASELIT & mdoc->flags)
			mandoc_msg(MANDOCERR_ARG_QUOTE,
			    mdoc->parse, line, *pos, NULL);

		mdoc->flags &= ~MDOC_PHRASELIT;
		return(ARGS_EOLN);
	}

	*v = &buf[*pos];

	if (ARGSFL_DELIM == fl)
		if (args_checkpunct(buf, *pos))
			return(ARGS_PUNCT);

	/*
	 * First handle TABSEP items, restricted to `Bl -column'.  This
	 * ignores conventional token parsing and instead uses tabs or
	 * `Ta' macros to separate phrases.  Phrases are parsed again
	 * for arguments at a later phase.
	 */

	if (ARGSFL_TABSEP == fl) {
		/* Scan ahead to tab (can't be escaped). */
		p = strchr(*v, '\t');
		pp = NULL;

		/* Scan ahead to unescaped `Ta'. */
		if ( ! (MDOC_PHRASELIT & mdoc->flags))
			for (pp = *v; ; pp++) {
				if (NULL == (pp = strstr(pp, "Ta")))
					break;
				if (pp > *v && ' ' != *(pp - 1))
					continue;
				if (' ' == *(pp + 2) || '\0' == *(pp + 2))
					break;
			}

		/* By default, assume a phrase. */
		rc = ARGS_PHRASE;

		/*
		 * Adjust new-buffer position to be beyond delimiter
		 * mark (e.g., Ta -> end + 2).
		 */
		if (p && pp) {
			*pos += pp < p ? 2 : 1;
			rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
			p = pp < p ? pp : p;
		} else if (p && ! pp) {
			rc = ARGS_PPHRASE;
			*pos += 1;
		} else if (pp && ! p) {
			p = pp;
			*pos += 2;
		} else {
			rc = ARGS_PEND;
			p = strchr(*v, 0);
		}

		/* Whitespace check for eoln case... */
		if ('\0' == *p && ' ' == *(p - 1))
			mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
			    line, *pos, NULL);

		*pos += (int)(p - *v);

		/* Strip delimiter's preceding whitespace. */
		pp = p - 1;
		while (pp > *v && ' ' == *pp) {
			if (pp > *v && '\\' == *(pp - 1))
				break;
			pp--;
		}
		*(pp + 1) = 0;

		/* Strip delimiter's proceeding whitespace. */
		for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
			/* Skip ahead. */ ;

		return(rc);
	}

	/*
	 * Process a quoted literal.  A quote begins with a double-quote
	 * and ends with a double-quote NOT preceded by a double-quote.
	 * NUL-terminate the literal in place.
	 * Collapse pairs of quotes inside quoted literals.
	 * Whitespace is NOT involved in literal termination.
	 */

	if (MDOC_PHRASELIT & mdoc->flags || '\"' == buf[*pos]) {
		if ( ! (MDOC_PHRASELIT & mdoc->flags))
			*v = &buf[++(*pos)];

		if (MDOC_PPHRASE & mdoc->flags)
			mdoc->flags |= MDOC_PHRASELIT;

		pairs = 0;
		for ( ; buf[*pos]; (*pos)++) {
			/* Move following text left after quoted quotes. */
			if (pairs)
				buf[*pos - pairs] = buf[*pos];
			if ('\"' != buf[*pos])
				continue;
			/* Unquoted quotes end quoted args. */
			if ('\"' != buf[*pos + 1])
				break;
			/* Quoted quotes collapse. */
			pairs++;
			(*pos)++;
		}
		if (pairs)
			buf[*pos - pairs] = '\0';

		if ('\0' == buf[*pos]) {
			if (MDOC_PPHRASE & mdoc->flags)
				return(ARGS_QWORD);
			mandoc_msg(MANDOCERR_ARG_QUOTE,
			    mdoc->parse, line, *pos, NULL);
			return(ARGS_QWORD);
		}

		mdoc->flags &= ~MDOC_PHRASELIT;
		buf[(*pos)++] = '\0';

		if ('\0' == buf[*pos])
			return(ARGS_QWORD);

		while (' ' == buf[*pos])
			(*pos)++;

		if ('\0' == buf[*pos])
			mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
			    line, *pos, NULL);

		return(ARGS_QWORD);
	}

	p = &buf[*pos];
	*v = mandoc_getarg(mdoc->parse, &p, line, pos);

	return(ARGS_WORD);
}

/*
 * Check if the string consists only of space-separated closing
 * delimiters.  This is a bit of a dance: the first must be a close
 * delimiter, but it may be followed by middle delimiters.  Arbitrary
 * whitespace may separate these tokens.
 */
static int
args_checkpunct(const char *buf, int i)
{
	int		 j;
	char		 dbuf[DELIMSZ];
	enum mdelim	 d;

	/* First token must be a close-delimiter. */

	for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
		dbuf[j] = buf[i];

	if (DELIMSZ == j)
		return(0);

	dbuf[j] = '\0';
	if (DELIM_CLOSE != mdoc_isdelim(dbuf))
		return(0);

	while (' ' == buf[i])
		i++;

	/* Remaining must NOT be open/none. */

	while (buf[i]) {
		j = 0;
		while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
			dbuf[j++] = buf[i++];

		if (DELIMSZ == j)
			return(0);

		dbuf[j] = '\0';
		d = mdoc_isdelim(dbuf);
		if (DELIM_NONE == d || DELIM_OPEN == d)
			return(0);

		while (' ' == buf[i])
			i++;
	}

	return('\0' == buf[i]);
}

static void
argv_multi(struct mdoc *mdoc, int line,
		struct mdoc_argv *v, int *pos, char *buf)
{
	enum margserr	 ac;
	char		*p;

	for (v->sz = 0; ; v->sz++) {
		if (buf[*pos] == '-')
			break;
		ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
		if (ac == ARGS_EOLN)
			break;

		if (v->sz % MULTI_STEP == 0)
			v->value = mandoc_reallocarray(v->value,
			    v->sz + MULTI_STEP, sizeof(char *));

		v->value[(int)v->sz] = mandoc_strdup(p);
	}
}

static void
argv_single(struct mdoc *mdoc, int line,
		struct mdoc_argv *v, int *pos, char *buf)
{
	enum margserr	 ac;
	char		*p;

	ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
	if (ac == ARGS_EOLN)
		return;

	v->sz = 1;
	v->value = mandoc_malloc(sizeof(char *));
	v->value[0] = mandoc_strdup(p);
}