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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/mandoc/mdoc_argv.c	Lines:	0	164	0.0 %
Date:	2016-12-06	Branches:	0	153	0.0 %


/*	$OpenBSD: mdoc_argv.c,v 1.64 2016/07/15 18:02:32 schwarze Exp $ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2012, 2014, 2015 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.
 */
#include <sys/types.h>

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

#include "mandoc_aux.h"
#include "mandoc.h"
#include "roff.h"
#include "mdoc.h"
#include "libmandoc.h"
#include "roff_int.h"
#include "libmdoc.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 roff_man *, int, int *,
				char *, enum argsflag, char **);
static	int		 args_checkpunct(const char *, int);
static	void		 argv_multi(struct roff_man *, int,
				struct mdoc_argv *, int *, char *);
static	void		 argv_single(struct roff_man *, 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 roff_man *mdoc, int line, int 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   = *pos;
		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 roff_man *mdoc, int line, int *pos,
	char *buf, int tok, char **v)
{
	struct roff_node *n;
	char		 *v_local;
	enum argsflag	  fl;

	if (v == NULL)
		v = &v_local;
	fl = tok == TOKEN_NONE ? 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 roff_man *mdoc, int line, int *pos,
		char *buf, enum argsflag fl, char **v)
{
	char		*p;
	int		 pairs;

	if (buf[*pos] == '\0') {
		if (mdoc->flags & MDOC_PHRASELIT &&
		    ! (mdoc->flags & MDOC_PHRASE)) {
			mandoc_msg(MANDOCERR_ARG_QUOTE,
			    mdoc->parse, line, *pos, NULL);
			mdoc->flags &= ~MDOC_PHRASELIT;
		}
		return ARGS_EOLN;
	}

	*v = buf + *pos;

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

	/*
	 * Tabs in `It' lines in `Bl -column' can't be escaped.
	 * Phrases are reparsed for `Ta' and other macros later.
	 */

	if (fl == ARGSFL_TABSEP) {
		if ((p = strchr(*v, '\t')) != NULL) {

			/*
			 * Words right before and right after
			 * tab characters are not parsed,
			 * unless there is a blank in between.
			 */

			if (p[-1] != ' ')
				mdoc->flags |= MDOC_PHRASEQL;
			if (p[1] != ' ')
				mdoc->flags |= MDOC_PHRASEQN;

			/*
			 * One or more blanks after a tab cause
			 * one leading blank in the next column.
			 * So skip all but one of them.
			 */

			*pos += (int)(p - *v) + 1;
			while (buf[*pos] == ' ' && buf[*pos + 1] == ' ')
				(*pos)++;

			/*
			 * A tab at the end of an input line
			 * switches to the next column.
			 */

			if (buf[*pos] == '\0' || buf[*pos + 1] == '\0')
				mdoc->flags |= MDOC_PHRASEQN;
		} else {
			p = strchr(*v, '\0');
			if (p[-1] == ' ')
				mandoc_msg(MANDOCERR_SPACE_EOL,
				    mdoc->parse, line, *pos, NULL);
			*pos += (int)(p - *v);
		}

		/* Skip any trailing blank characters. */
		while (p > *v && p[-1] == ' ' &&
		    (p - 1 == *v || p[-2] != '\\'))
			p--;
		*p = '\0';

		return ARGS_PHRASE;
	}

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

		if (mdoc->flags & MDOC_PHRASE)
			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 (buf[*pos] == '\0') {
			if ( ! (mdoc->flags & MDOC_PHRASE))
				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);

	/*
	 * After parsing the last word in this phrase,
	 * tell lookup() whether or not to interpret it.
	 */

	if (*p == '\0' && mdoc->flags & MDOC_PHRASEQL) {
		mdoc->flags &= ~MDOC_PHRASEQL;
		mdoc->flags |= MDOC_PHRASEQF;
	}
	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 roff_man *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 roff_man *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);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mdoc_argv.c,v 1.64 2016/07/15 18:02:32 schwarze Exp $ */
2			/*
3			* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4			* Copyright (c) 2012, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18			#include <sys/types.h>
19
20			#include <assert.h>
21			#include <stdlib.h>
22			#include <stdio.h>
23			#include <string.h>
24
25			#include "mandoc_aux.h"
26			#include "mandoc.h"
27			#include "roff.h"
28			#include "mdoc.h"
29			#include "libmandoc.h"
30			#include "roff_int.h"
31			#include "libmdoc.h"
32
33			#define MULTI_STEP 5 /* pre-allocate argument values */
34			#define DELIMSZ 6 /* max possible size of a delimiter */
35
36			enum argsflag {
37			ARGSFL_NONE = 0,
38			ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
39			ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
40			};
41
42			enum argvflag {
43			ARGV_NONE, /* no args to flag (e.g., -split) */
44			ARGV_SINGLE, /* one arg to flag (e.g., -file xxx) */
45			ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */
46			};
47
48			struct mdocarg {
49			enum argsflag flags;
50			const enum mdocargt *argvs;
51			};
52
53			static void argn_free(struct mdoc_arg *, int);
54			static enum margserr args(struct roff_man , int, int ,
55			char , enum argsflag, char *);
56			static int args_checkpunct(const char *, int);
57			static void argv_multi(struct roff_man *, int,
58			struct mdoc_argv , int , char *);
59			static void argv_single(struct roff_man *, int,
60			struct mdoc_argv , int , char *);
61
62			static const enum argvflag argvflags[MDOC_ARG_MAX] = {
63			ARGV_NONE, /* MDOC_Split */
64			ARGV_NONE, /* MDOC_Nosplit */
65			ARGV_NONE, /* MDOC_Ragged */
66			ARGV_NONE, /* MDOC_Unfilled */
67			ARGV_NONE, /* MDOC_Literal */
68			ARGV_SINGLE, /* MDOC_File */
69			ARGV_SINGLE, /* MDOC_Offset */
70			ARGV_NONE, /* MDOC_Bullet */
71			ARGV_NONE, /* MDOC_Dash */
72			ARGV_NONE, /* MDOC_Hyphen */
73			ARGV_NONE, /* MDOC_Item */
74			ARGV_NONE, /* MDOC_Enum */
75			ARGV_NONE, /* MDOC_Tag */
76			ARGV_NONE, /* MDOC_Diag */
77			ARGV_NONE, /* MDOC_Hang */
78			ARGV_NONE, /* MDOC_Ohang */
79			ARGV_NONE, /* MDOC_Inset */
80			ARGV_MULTI, /* MDOC_Column */
81			ARGV_SINGLE, /* MDOC_Width */
82			ARGV_NONE, /* MDOC_Compact */
83			ARGV_NONE, /* MDOC_Std */
84			ARGV_NONE, /* MDOC_Filled */
85			ARGV_NONE, /* MDOC_Words */
86			ARGV_NONE, /* MDOC_Emphasis */
87			ARGV_NONE, /* MDOC_Symbolic */
88			ARGV_NONE /* MDOC_Symbolic */
89			};
90
91			static const enum mdocargt args_Ex[] = {
92			MDOC_Std,
93			MDOC_ARG_MAX
94			};
95
96			static const enum mdocargt args_An[] = {
97			MDOC_Split,
98			MDOC_Nosplit,
99			MDOC_ARG_MAX
100			};
101
102			static const enum mdocargt args_Bd[] = {
103			MDOC_Ragged,
104			MDOC_Unfilled,
105			MDOC_Filled,
106			MDOC_Literal,
107			MDOC_File,
108			MDOC_Offset,
109			MDOC_Compact,
110			MDOC_Centred,
111			MDOC_ARG_MAX
112			};
113
114			static const enum mdocargt args_Bf[] = {
115			MDOC_Emphasis,
116			MDOC_Literal,
117			MDOC_Symbolic,
118			MDOC_ARG_MAX
119			};
120
121			static const enum mdocargt args_Bk[] = {
122			MDOC_Words,
123			MDOC_ARG_MAX
124			};
125
126			static const enum mdocargt args_Bl[] = {
127			MDOC_Bullet,
128			MDOC_Dash,
129			MDOC_Hyphen,
130			MDOC_Item,
131			MDOC_Enum,
132			MDOC_Tag,
133			MDOC_Diag,
134			MDOC_Hang,
135			MDOC_Ohang,
136			MDOC_Inset,
137			MDOC_Column,
138			MDOC_Width,
139			MDOC_Offset,
140			MDOC_Compact,
141			MDOC_Nested,
142			MDOC_ARG_MAX
143			};
144
145			static const struct mdocarg mdocargs[MDOC_MAX] = {
146			{ ARGSFL_DELIM, NULL }, /* Ap */
147			{ ARGSFL_NONE, NULL }, /* Dd */
148			{ ARGSFL_NONE, NULL }, /* Dt */
149			{ ARGSFL_NONE, NULL }, /* Os */
150			{ ARGSFL_NONE, NULL }, /* Sh */
151			{ ARGSFL_NONE, NULL }, /* Ss */
152			{ ARGSFL_NONE, NULL }, /* Pp */
153			{ ARGSFL_DELIM, NULL }, /* D1 */
154			{ ARGSFL_DELIM, NULL }, /* Dl */
155			{ ARGSFL_NONE, args_Bd }, /* Bd */
156			{ ARGSFL_NONE, NULL }, /* Ed */
157			{ ARGSFL_NONE, args_Bl }, /* Bl */
158			{ ARGSFL_NONE, NULL }, /* El */
159			{ ARGSFL_NONE, NULL }, /* It */
160			{ ARGSFL_DELIM, NULL }, /* Ad */
161			{ ARGSFL_DELIM, args_An }, /* An */
162			{ ARGSFL_DELIM, NULL }, /* Ar */
163			{ ARGSFL_DELIM, NULL }, /* Cd */
164			{ ARGSFL_DELIM, NULL }, /* Cm */
165			{ ARGSFL_DELIM, NULL }, /* Dv */
166			{ ARGSFL_DELIM, NULL }, /* Er */
167			{ ARGSFL_DELIM, NULL }, /* Ev */
168			{ ARGSFL_NONE, args_Ex }, /* Ex */
169			{ ARGSFL_DELIM, NULL }, /* Fa */
170			{ ARGSFL_NONE, NULL }, /* Fd */
171			{ ARGSFL_DELIM, NULL }, /* Fl */
172			{ ARGSFL_DELIM, NULL }, /* Fn */
173			{ ARGSFL_DELIM, NULL }, /* Ft */
174			{ ARGSFL_DELIM, NULL }, /* Ic */
175			{ ARGSFL_DELIM, NULL }, /* In */
176			{ ARGSFL_DELIM, NULL }, /* Li */
177			{ ARGSFL_NONE, NULL }, /* Nd */
178			{ ARGSFL_DELIM, NULL }, /* Nm */
179			{ ARGSFL_DELIM, NULL }, /* Op */
180			{ ARGSFL_DELIM, NULL }, /* Ot */
181			{ ARGSFL_DELIM, NULL }, /* Pa */
182			{ ARGSFL_NONE, args_Ex }, /* Rv */
183			{ ARGSFL_DELIM, NULL }, /* St */
184			{ ARGSFL_DELIM, NULL }, /* Va */
185			{ ARGSFL_DELIM, NULL }, /* Vt */
186			{ ARGSFL_DELIM, NULL }, /* Xr */
187			{ ARGSFL_NONE, NULL }, /* %A */
188			{ ARGSFL_NONE, NULL }, /* %B */
189			{ ARGSFL_NONE, NULL }, /* %D */
190			{ ARGSFL_NONE, NULL }, /* %I */
191			{ ARGSFL_NONE, NULL }, /* %J */
192			{ ARGSFL_NONE, NULL }, /* %N */
193			{ ARGSFL_NONE, NULL }, /* %O */
194			{ ARGSFL_NONE, NULL }, /* %P */
195			{ ARGSFL_NONE, NULL }, /* %R */
196			{ ARGSFL_NONE, NULL }, /* %T */
197			{ ARGSFL_NONE, NULL }, /* %V */
198			{ ARGSFL_DELIM, NULL }, /* Ac */
199			{ ARGSFL_NONE, NULL }, /* Ao */
200			{ ARGSFL_DELIM, NULL }, /* Aq */
201			{ ARGSFL_DELIM, NULL }, /* At */
202			{ ARGSFL_DELIM, NULL }, /* Bc */
203			{ ARGSFL_NONE, args_Bf }, /* Bf */
204			{ ARGSFL_NONE, NULL }, /* Bo */
205			{ ARGSFL_DELIM, NULL }, /* Bq */
206			{ ARGSFL_DELIM, NULL }, /* Bsx */
207			{ ARGSFL_DELIM, NULL }, /* Bx */
208			{ ARGSFL_NONE, NULL }, /* Db */
209			{ ARGSFL_DELIM, NULL }, /* Dc */
210			{ ARGSFL_NONE, NULL }, /* Do */
211			{ ARGSFL_DELIM, NULL }, /* Dq */
212			{ ARGSFL_DELIM, NULL }, /* Ec */
213			{ ARGSFL_NONE, NULL }, /* Ef */
214			{ ARGSFL_DELIM, NULL }, /* Em */
215			{ ARGSFL_NONE, NULL }, /* Eo */
216			{ ARGSFL_DELIM, NULL }, /* Fx */
217			{ ARGSFL_DELIM, NULL }, /* Ms */
218			{ ARGSFL_DELIM, NULL }, /* No */
219			{ ARGSFL_DELIM, NULL }, /* Ns */
220			{ ARGSFL_DELIM, NULL }, /* Nx */
221			{ ARGSFL_DELIM, NULL }, /* Ox */
222			{ ARGSFL_DELIM, NULL }, /* Pc */
223			{ ARGSFL_DELIM, NULL }, /* Pf */
224			{ ARGSFL_NONE, NULL }, /* Po */
225			{ ARGSFL_DELIM, NULL }, /* Pq */
226			{ ARGSFL_DELIM, NULL }, /* Qc */
227			{ ARGSFL_DELIM, NULL }, /* Ql */
228			{ ARGSFL_NONE, NULL }, /* Qo */
229			{ ARGSFL_DELIM, NULL }, /* Qq */
230			{ ARGSFL_NONE, NULL }, /* Re */
231			{ ARGSFL_NONE, NULL }, /* Rs */
232			{ ARGSFL_DELIM, NULL }, /* Sc */
233			{ ARGSFL_NONE, NULL }, /* So */
234			{ ARGSFL_DELIM, NULL }, /* Sq */
235			{ ARGSFL_NONE, NULL }, /* Sm */
236			{ ARGSFL_DELIM, NULL }, /* Sx */
237			{ ARGSFL_DELIM, NULL }, /* Sy */
238			{ ARGSFL_DELIM, NULL }, /* Tn */
239			{ ARGSFL_DELIM, NULL }, /* Ux */
240			{ ARGSFL_DELIM, NULL }, /* Xc */
241			{ ARGSFL_NONE, NULL }, /* Xo */
242			{ ARGSFL_NONE, NULL }, /* Fo */
243			{ ARGSFL_DELIM, NULL }, /* Fc */
244			{ ARGSFL_NONE, NULL }, /* Oo */
245			{ ARGSFL_DELIM, NULL }, /* Oc */
246			{ ARGSFL_NONE, args_Bk }, /* Bk */
247			{ ARGSFL_NONE, NULL }, /* Ek */
248			{ ARGSFL_NONE, NULL }, /* Bt */
249			{ ARGSFL_NONE, NULL }, /* Hf */
250			{ ARGSFL_DELIM, NULL }, /* Fr */
251			{ ARGSFL_NONE, NULL }, /* Ud */
252			{ ARGSFL_DELIM, NULL }, /* Lb */
253			{ ARGSFL_NONE, NULL }, /* Lp */
254			{ ARGSFL_DELIM, NULL }, /* Lk */
255			{ ARGSFL_DELIM, NULL }, /* Mt */
256			{ ARGSFL_DELIM, NULL }, /* Brq */
257			{ ARGSFL_NONE, NULL }, /* Bro */
258			{ ARGSFL_DELIM, NULL }, /* Brc */
259			{ ARGSFL_NONE, NULL }, /* %C */
260			{ ARGSFL_NONE, NULL }, /* Es */
261			{ ARGSFL_DELIM, NULL }, /* En */
262			{ ARGSFL_DELIM, NULL }, /* Dx */
263			{ ARGSFL_NONE, NULL }, /* %Q */
264			{ ARGSFL_NONE, NULL }, /* br */
265			{ ARGSFL_NONE, NULL }, /* sp */
266			{ ARGSFL_NONE, NULL }, /* %U */
267			{ ARGSFL_NONE, NULL }, /* Ta */
268			{ ARGSFL_NONE, NULL }, /* ll */
269			};
270
271
272			/*
273			* Parse flags and their arguments from the input line.
274			* These come in the form -flag [argument ...].
275			* Some flags take no argument, some one, some multiple.
276			*/
277			void
278			mdoc_argv(struct roff_man *mdoc, int line, int tok,
279			struct mdoc_arg *reta, int pos, char *buf)
280			{
281			struct mdoc_argv tmpv;
282			struct mdoc_argv **retv;
283			const enum mdocargt *argtable;
284			char *argname;
285			int ipos, retc;
286			char savechar;
287
288			*reta = NULL;
289
290			/* Which flags does this macro support? */
291
292			argtable = mdocargs[tok].argvs;
293			if (argtable == NULL)
294			return;
295
296			/* Loop over the flags on the input line. */
297
298			ipos = *pos;
299			while (buf[ipos] == '-') {
300
301			/* Seek to the first unescaped space. */
302
303			for (argname = buf + ++ipos; buf[ipos] != '\0'; ipos++)
304			if (buf[ipos] == ' ' && buf[ipos - 1] != '\\')
305			break;
306
307			/*
308			* We want to nil-terminate the word to look it up.
309			* But we may not have a flag, in which case we need
310			* to restore the line as-is. So keep around the
311			* stray byte, which we'll reset upon exiting.
312			*/
313
314			if ((savechar = buf[ipos]) != '\0')
315			buf[ipos++] = '\0';
316
317			/*
318			* Now look up the word as a flag. Use temporary
319			* storage that we'll copy into the node's flags.
320			*/
321
322			while ((tmpv.arg = *argtable++) != MDOC_ARG_MAX)
323			if ( ! strcmp(argname, mdoc_argnames[tmpv.arg]))
324			break;
325
326			/* If it isn't a flag, restore the saved byte. */
327
328			if (tmpv.arg == MDOC_ARG_MAX) {
329			if (savechar != '\0')
330			buf[ipos - 1] = savechar;
331			break;
332			}
333
334			/* Read to the next word (the first argument). */
335
336			while (buf[ipos] == ' ')
337			ipos++;
338
339			/* Parse the arguments of the flag. */
340
341			tmpv.line = line;
342			tmpv.pos = *pos;
343			tmpv.sz = 0;
344			tmpv.value = NULL;
345
346			switch (argvflags[tmpv.arg]) {
347			case ARGV_SINGLE:
348			argv_single(mdoc, line, &tmpv, &ipos, buf);
349			break;
350			case ARGV_MULTI:
351			argv_multi(mdoc, line, &tmpv, &ipos, buf);
352			break;
353			case ARGV_NONE:
354			break;
355			}
356
357			/* Append to the return values. */
358
359			if (*reta == NULL)
360			reta = mandoc_calloc(1, sizeof(*reta));
361
362			retc = ++(*reta)->argc;
363			retv = &(*reta)->argv;
364			retv = mandoc_reallocarray(retv, retc, sizeof(**retv));
365			memcpy(retv + retc - 1, &tmpv, sizeof(*retv));
366
367			/* Prepare for parsing the next flag. */
368
369			*pos = ipos;
370			argtable = mdocargs[tok].argvs;
371			}
372			}
373
374			void
375			mdoc_argv_free(struct mdoc_arg *p)
376			{
377			int i;
378
379			if (NULL == p)
380			return;
381
382			if (p->refcnt) {
383			--(p->refcnt);
384			if (p->refcnt)
385			return;
386			}
387			assert(p->argc);
388
389			for (i = (int)p->argc - 1; i >= 0; i--)
390			argn_free(p, i);
391
392			free(p->argv);
393			free(p);
394			}
395
396			static void
397			argn_free(struct mdoc_arg *p, int iarg)
398			{
399			struct mdoc_argv *arg;
400			int j;
401
402			arg = &p->argv[iarg];
403
404			if (arg->sz && arg->value) {
405			for (j = (int)arg->sz - 1; j >= 0; j--)
406			free(arg->value[j]);
407			free(arg->value);
408			}
409
410			for (--p->argc; iarg < (int)p->argc; iarg++)
411			p->argv[iarg] = p->argv[iarg+1];
412			}
413
414			enum margserr
415			mdoc_args(struct roff_man mdoc, int line, int pos,
416			char buf, int tok, char *v)
417			{
418			struct roff_node *n;
419			char *v_local;
420			enum argsflag fl;
421
422			if (v == NULL)
423			v = &v_local;
424			fl = tok == TOKEN_NONE ? ARGSFL_NONE : mdocargs[tok].flags;
425			if (tok != MDOC_It)
426			return args(mdoc, line, pos, buf, fl, v);
427
428			/*
429			* We know that we're in an `It', so it's reasonable to expect
430			* us to be sitting in a `Bl'. Someday this may not be the case
431			* (if we allow random `It's sitting out there), so provide a
432			* safe fall-back into the default behaviour.
433			*/
434
435			for (n = mdoc->last; n; n = n->parent)
436			if (MDOC_Bl == n->tok)
437			if (LIST_column == n->norm->Bl.type) {
438			fl = ARGSFL_TABSEP;
439			break;
440			}
441
442			return args(mdoc, line, pos, buf, fl, v);
443			}
444
445			static enum margserr
446			args(struct roff_man mdoc, int line, int pos,
447			char buf, enum argsflag fl, char *v)
448			{
449			char *p;
450			int pairs;
451
452			if (buf[*pos] == '\0') {
453			if (mdoc->flags & MDOC_PHRASELIT &&
454			! (mdoc->flags & MDOC_PHRASE)) {
455			mandoc_msg(MANDOCERR_ARG_QUOTE,
456			mdoc->parse, line, *pos, NULL);
457			mdoc->flags &= ~MDOC_PHRASELIT;
458			}
459			return ARGS_EOLN;
460			}
461
462			v = buf + pos;
463
464			if (fl == ARGSFL_DELIM && args_checkpunct(buf, *pos))
465			return ARGS_PUNCT;
466
467			/*
468			* Tabs in `It' lines in `Bl -column' can't be escaped.
469			* Phrases are reparsed for `Ta' and other macros later.
470			*/
471
472			if (fl == ARGSFL_TABSEP) {
473			if ((p = strchr(*v, '\t')) != NULL) {
474
475			/*
476			* Words right before and right after
477			* tab characters are not parsed,
478			* unless there is a blank in between.
479			*/
480
481			if (p[-1] != ' ')
482			mdoc->flags \|= MDOC_PHRASEQL;
483			if (p[1] != ' ')
484			mdoc->flags \|= MDOC_PHRASEQN;
485
486			/*
487			* One or more blanks after a tab cause
488			* one leading blank in the next column.
489			* So skip all but one of them.
490			*/
491
492			pos += (int)(p - v) + 1;
493			while (buf[pos] == ' ' && buf[pos + 1] == ' ')
494			(*pos)++;
495
496			/*
497			* A tab at the end of an input line
498			* switches to the next column.
499			*/
500
501			if (buf[pos] == '\0' \|\| buf[pos + 1] == '\0')
502			mdoc->flags \|= MDOC_PHRASEQN;
503			} else {
504			p = strchr(*v, '\0');
505			if (p[-1] == ' ')
506			mandoc_msg(MANDOCERR_SPACE_EOL,
507			mdoc->parse, line, *pos, NULL);
508			pos += (int)(p - v);
509			}
510
511			/* Skip any trailing blank characters. */
512			while (p > *v && p[-1] == ' ' &&
513			(p - 1 == *v \|\| p[-2] != '\\'))
514			p--;
515			*p = '\0';
516
517			return ARGS_PHRASE;
518			}
519
520			/*
521			* Process a quoted literal. A quote begins with a double-quote
522			* and ends with a double-quote NOT preceded by a double-quote.
523			* NUL-terminate the literal in place.
524			* Collapse pairs of quotes inside quoted literals.
525			* Whitespace is NOT involved in literal termination.
526			*/
527
528			if (mdoc->flags & MDOC_PHRASELIT \|\| buf[*pos] == '\"') {
529			if ( ! (mdoc->flags & MDOC_PHRASELIT))
530			v = &buf[++(pos)];
531
532			if (mdoc->flags & MDOC_PHRASE)
533			mdoc->flags \|= MDOC_PHRASELIT;
534
535			pairs = 0;
536			for ( ; buf[pos]; (pos)++) {
537			/* Move following text left after quoted quotes. */
538			if (pairs)
539			buf[pos - pairs] = buf[pos];
540			if ('\"' != buf[*pos])
541			continue;
542			/* Unquoted quotes end quoted args. */
543			if ('\"' != buf[*pos + 1])
544			break;
545			/* Quoted quotes collapse. */
546			pairs++;
547			(*pos)++;
548			}
549			if (pairs)
550			buf[*pos - pairs] = '\0';
551
552			if (buf[*pos] == '\0') {
553			if ( ! (mdoc->flags & MDOC_PHRASE))
554			mandoc_msg(MANDOCERR_ARG_QUOTE,
555			mdoc->parse, line, *pos, NULL);
556			return ARGS_QWORD;
557			}
558
559			mdoc->flags &= ~MDOC_PHRASELIT;
560			buf[(*pos)++] = '\0';
561
562			if ('\0' == buf[*pos])
563			return ARGS_QWORD;
564
565			while (' ' == buf[*pos])
566			(*pos)++;
567
568			if ('\0' == buf[*pos])
569			mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse,
570			line, *pos, NULL);
571
572			return ARGS_QWORD;
573			}
574
575			p = &buf[*pos];
576			*v = mandoc_getarg(mdoc->parse, &p, line, pos);
577
578			/*
579			* After parsing the last word in this phrase,
580			* tell lookup() whether or not to interpret it.
581			*/
582
583			if (*p == '\0' && mdoc->flags & MDOC_PHRASEQL) {
584			mdoc->flags &= ~MDOC_PHRASEQL;
585			mdoc->flags \|= MDOC_PHRASEQF;
586			}
587			return ARGS_WORD;
588			}
589
590			/*
591			* Check if the string consists only of space-separated closing
592			* delimiters. This is a bit of a dance: the first must be a close
593			* delimiter, but it may be followed by middle delimiters. Arbitrary
594			* whitespace may separate these tokens.
595			*/
596			static int
597			args_checkpunct(const char *buf, int i)
598			{
599			int j;
600			char dbuf[DELIMSZ];
601			enum mdelim d;
602
603			/* First token must be a close-delimiter. */
604
605			for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
606			dbuf[j] = buf[i];
607
608			if (DELIMSZ == j)
609			return 0;
610
611			dbuf[j] = '\0';
612			if (DELIM_CLOSE != mdoc_isdelim(dbuf))
613			return 0;
614
615			while (' ' == buf[i])
616			i++;
617
618			/* Remaining must NOT be open/none. */
619
620			while (buf[i]) {
621			j = 0;
622			while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
623			dbuf[j++] = buf[i++];
624
625			if (DELIMSZ == j)
626			return 0;
627
628			dbuf[j] = '\0';
629			d = mdoc_isdelim(dbuf);
630			if (DELIM_NONE == d \|\| DELIM_OPEN == d)
631			return 0;
632
633			while (' ' == buf[i])
634			i++;
635			}
636
637			return '\0' == buf[i];
638			}
639
640			static void
641			argv_multi(struct roff_man *mdoc, int line,
642			struct mdoc_argv v, int pos, char *buf)
643			{
644			enum margserr ac;
645			char *p;
646
647			for (v->sz = 0; ; v->sz++) {
648			if (buf[*pos] == '-')
649			break;
650			ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
651			if (ac == ARGS_EOLN)
652			break;
653
654			if (v->sz % MULTI_STEP == 0)
655			v->value = mandoc_reallocarray(v->value,
656			v->sz + MULTI_STEP, sizeof(char *));
657
658			v->value[(int)v->sz] = mandoc_strdup(p);
659			}
660			}
661
662			static void
663			argv_single(struct roff_man *mdoc, int line,
664			struct mdoc_argv v, int pos, char *buf)
665			{
666			enum margserr ac;
667			char *p;
668
669			ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
670			if (ac == ARGS_EOLN)
671			return;
672
673			v->sz = 1;
674			v->value = mandoc_malloc(sizeof(char *));
675			v->value[0] = mandoc_strdup(p);
676			}