Split mdocterm.c -> main.c terminal.c.

Abstracted output with -T selector (default ascii).
Name change: mdocterm -> mandoc.
Re-imported tree with -Ttree.

1 files changed, 0 insertions, 1132 deletions

diff --git a/mdocterm.c b/mdocterm.c
deleted file mode 100644
index b996fe6c..00000000
--- a/mdocterm.c
+++ /dev/null
@@ -1,1132 +0,0 @@
-/* $Id: mdocterm.c,v 1.49 2009/03/19 11:49:00 kristaps Exp $ */
-/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@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 <sys/types.h>
-#include <sys/stat.h>
-
-#include <assert.h>
-#include <err.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "term.h"
-
-#define	WARN_WALL	  0x03		/* All-warnings mask. */
-#define	WARN_WCOMPAT	 (1 << 0)	/* Compatibility warnings. */
-#define	WARN_WSYNTAX	 (1 << 1)	/* Syntax warnings. */
-#define	WARN_WERR	 (1 << 2)	/* Warnings->errors. */
-
-enum	termt {
-	TERMT_ASCII,
-	TERMT_LINT,
-	TERMT_TREE
-};
-
-extern	char		 *__progname;
-
-__dead	static void	  version(void);
-__dead	static void	  usage(void);
-#if 0
-__dead	static void	  punt(struct cmdargs *, char **);
-#endif
-static	int		  foptions(int *, char *);
-static	int		  toptions(enum termt *, char *);
-static	int		  woptions(int *, char *);
-static	int		  merr(void *, int, int, const char *);
-static	int		  mwarn(void *, int, int, 
-				enum mdoc_warn, const char *);
-static	void		  body(struct termp *, struct termpair *,
-				const struct mdoc_meta *,
-				const struct mdoc_node *);
-static	void		  header(struct termp *,
-				const struct mdoc_meta *);
-static	void		  footer(struct termp *,
-				const struct mdoc_meta *);
-static	int		  file(char **, size_t *, char **, size_t *, 
-				const char *, struct mdoc *);
-static	int		  fdesc(char **, size_t *, char **, size_t *, 
-				const char *, int, struct mdoc *);
-static	void		  pword(struct termp *, const char *, int);
-static	void		  pescape(struct termp *, 
-				const char *, int *, int);
-static	void		  nescape(struct termp *,
-				const char *, size_t);
-static	void		  chara(struct termp *, char);
-static	void		  stringa(struct termp *, 
-				const char *, size_t);
-static	void		  sanity(const struct mdoc_node *);
-
-
-int
-main(int argc, char *argv[])
-{
-	struct termp	 termp;
-	int		 c, fflags, wflags;
-	struct mdoc_cb	 cb;
-	struct mdoc	*mdoc;
-	char		*buf, *line;
-	size_t		 bufsz, linesz;
-	enum termt	 termt;
-
-	bzero(&termp, sizeof(struct termp));
-	bzero(&cb, sizeof(struct mdoc_cb));
-
-	termt = TERMT_ASCII;
-	fflags = wflags = 0;
-
-	/* LINTED */
-	while (-1 != (c = getopt(argc, argv, "f:VW:T:")))
-		switch (c) {
-		case ('f'):
-			if ( ! foptions(&fflags, optarg))
-				return(0);
-			break;
-		case ('T'):
-			if ( ! toptions(&termt, optarg))
-				return(0);
-			break;
-		case ('W'):
-			if ( ! woptions(&wflags, optarg))
-				return(0);
-			break;
-		case ('V'):
-			version();
-			/* NOTREACHED */
-		default:
-			usage();
-			/* NOTREACHED */
-		}
-
-	argc -= optind;
-	argv += optind;
-
-	termp.maxrmargin = 78;			/* FIXME */
-
-	cb.mdoc_err = merr;
-	cb.mdoc_warn = mwarn;
-
-	/* Line and block buffers persist between parses. */
-
-	buf = line = NULL;
-	bufsz = linesz = 0;
-
-	/* Overall mdoc persists between parses. */
-
-	mdoc = mdoc_alloc(&wflags, fflags, &cb);
-
-	while (*argv) {
-		if ( ! file(&line, &linesz, &buf, &bufsz, *argv, mdoc))
-			break;
-
-		switch (termt) {
-		case (TERMT_ASCII):
-			if (NULL == termp.symtab)
-				termp.symtab = ascii2htab();
-			header(&termp, mdoc_meta(mdoc));
-			body(&termp, NULL, mdoc_meta(mdoc), 
-					mdoc_node(mdoc));
-			footer(&termp, mdoc_meta(mdoc));
-			break;
-		default:
-			break;
-		}
-
-		mdoc_reset(mdoc);
-		argv++;
-	}
-
-	if (buf)
-		free(buf);
-	if (line)
-		free(line);
-	if (termp.buf)
-		free(termp.buf);
-	if (termp.symtab)
-		asciifree(termp.symtab);
-
-	mdoc_free(mdoc);
-
-	return(0);
-}
-
-
-__dead static void
-version(void)
-{
-
-	(void)printf("%s %s\n", __progname, VERSION);
-	exit(0);
-	/* NOTREACHED */
-}
-
-
-__dead static void
-usage(void)
-{
-
-	(void)fprintf(stderr, "usage: %s\n", __progname);
-	exit(1);
-	/* NOTREACHED */
-}
-
-
-static int
-file(char **ln, size_t *lnsz, char **buf, size_t *bufsz, 
-		const char *file, struct mdoc *mdoc)
-{
-	int		 fd, c;
-
-	if (-1 == (fd = open(file, O_RDONLY, 0))) {
-		warn("%s", file);
-		return(0);
-	}
-
-	c = fdesc(ln, lnsz, buf, bufsz, file, fd, mdoc);
-
-	if (-1 == close(fd))
-		warn("%s", file);
-
-	return(c);
-}
-
-
-static int
-fdesc(char **lnp, size_t *lnsz, char **bufp, size_t *bufsz, 
-		const char *f, int fd, struct mdoc *mdoc)
-{
-	size_t		 sz;
-	ssize_t		 ssz;
-	struct stat	 st;
-	int		 j, i, pos, lnn;
-	char		*ln, *buf;
-
-	buf = *bufp;
-	ln = *lnp;
-
-	/*
-	 * Two buffers: ln and buf.  buf is the input buffer, optimised
-	 * for each file's block size.  ln is a line buffer.  Both
-	 * growable, hence passed in by ptr-ptr.
-	 */
-
-	if (-1 == fstat(fd, &st)) {
-		warnx("%s", f);
-		sz = BUFSIZ;
-	} else 
-		sz = (unsigned)BUFSIZ > st.st_blksize ?
-			(size_t)BUFSIZ : st.st_blksize;
-
-	if (sz > *bufsz) {
-		if (NULL == (buf = realloc(buf, sz)))
-			err(1, "realloc");
-		*bufp = buf;
-		*bufsz = sz;
-	}
-
-	/*
-	 * Fill buf with file blocksize and parse newlines into ln.
-	 */
-
-	for (lnn = 1, pos = 0; ; ) {
-		if (-1 == (ssz = read(fd, buf, sz))) {
-			warn("%s", f);
-			return(0);
-		} else if (0 == ssz) 
-			break;
-
-		for (i = 0; i < (int)ssz; i++) {
-			if (pos >= (int)*lnsz) {
-				*lnsz += 256; /* Step-size. */
-				ln = realloc(ln, *lnsz);
-				if (NULL == ln)
-					err(1, "realloc");
-				*lnp = ln;
-			}
-
-			if ('\n' != buf[i]) {
-				ln[pos++] = buf[i];
-				continue;
-			}
-
-			/* Check for CPP-escaped newline.  */
-
-			if (pos > 0 && '\\' == ln[pos - 1]) {
-				for (j = pos - 1; j >= 0; j--)
-					if ('\\' != ln[j])
-						break;
-
-				if ( ! ((pos - j) % 2)) {
-					pos--;
-					lnn++;
-					continue;
-				}
-			}
-
-			ln[pos] = 0;
-			if ( ! mdoc_parseln(mdoc, lnn, ln))
-				return(0);
-			lnn++;
-			pos = 0;
-		}
-	}
-
-	return(mdoc_endparse(mdoc));
-}
-
-
-static int
-toptions(enum termt *tflags, char *arg)
-{
-
-	if (0 == strcmp(arg, "ascii"))
-		*tflags = TERMT_ASCII;
-	else if (0 == strcmp(arg, "lint"))
-		*tflags = TERMT_LINT;
-	else if (0 == strcmp(arg, "tree"))
-		*tflags = TERMT_TREE;
-	else {
-		warnx("bad argument: -T%s", arg);
-		return(0);
-	}
-
-	return(1);
-}
-
-
-/*
- * Parse out the options for [-fopt...] setting compiler options.  These
- * can be comma-delimited or called again.
- */
-static int
-foptions(int *fflags, char *arg)
-{
-	char		*v;
-	char		*toks[] = { "ign-scope", "ign-escape", 
-				    "ign-macro", NULL };
-
-	while (*arg) 
-		switch (getsubopt(&arg, toks, &v)) {
-		case (0):
-			*fflags |= MDOC_IGN_SCOPE;
-			break;
-		case (1):
-			*fflags |= MDOC_IGN_ESCAPE;
-			break;
-		case (2):
-			*fflags |= MDOC_IGN_MACRO;
-			break;
-		default:
-			warnx("bad argument: -f%s", arg);
-			return(0);
-		}
-
-	return(1);
-}
-
-
-/* 
- * Parse out the options for [-Werr...], which sets warning modes.
- * These can be comma-delimited or called again.  XXX - should this be
- * using -w like troff?
- */
-static int
-woptions(int *wflags, char *arg)
-{
-	char		*v;
-	char		*toks[] = { "all", "compat", 
-			"syntax", "error", NULL };
-
-	while (*arg) 
-		switch (getsubopt(&arg, toks, &v)) {
-		case (0):
-			*wflags |= WARN_WALL;
-			break;
-		case (1):
-			*wflags |= WARN_WCOMPAT;
-			break;
-		case (2):
-			*wflags |= WARN_WSYNTAX;
-			break;
-		case (3):
-			*wflags |= WARN_WERR;
-			break;
-		default:
-			warnx("bad argument: -W%s", arg);
-			return(0);
-		}
-
-	return(1);
-}
-
-
-/*
- * Flush a line of text.  A "line" is loosely defined as being something
- * that should be followed by a newline, regardless of whether it's
- * broken apart by newlines getting there.  A line can also be a
- * fragment of a columnar list.
- *
- * Specifically, a line is whatever's in p->buf of length p->col, which
- * is zeroed after this function returns.
- *
- * The variables TERMP_NOLPAD, TERMP_LITERAL and TERMP_NOBREAK are of
- * critical importance here.  Their behaviour follows:
- *
- *  - TERMP_NOLPAD: when beginning to write the line, don't left-pad the
- *    offset value.  This is useful when doing columnar lists where the
- *    prior column has right-padded.
- *
- *  - TERMP_NOBREAK: this is the most important and is used when making
- *    columns.  In short: don't print a newline and instead pad to the
- *    right margin.  Used in conjunction with TERMP_NOLPAD.
- *
- *  - TERMP_NONOBREAK: don't newline when TERMP_NOBREAK is specified.
- *
- *  In-line line breaking:
- *
- *  If TERMP_NOBREAK is specified and the line overruns the right
- *  margin, it will break and pad-right to the right margin after
- *  writing.  If maxrmargin is violated, it will break and continue
- *  writing from the right-margin, which will lead to the above
- *  scenario upon exit.
- *
- *  Otherwise, the line will break at the right margin.  Extremely long
- *  lines will cause the system to emit a warning (TODO: hyphenate, if
- *  possible).
- */
-void
-flushln(struct termp *p)
-{
-	int		 i, j;
-	size_t		 vsz, vis, maxvis, mmax, bp;
-
-	/*
-	 * First, establish the maximum columns of "visible" content.
-	 * This is usually the difference between the right-margin and
-	 * an indentation, but can be, for tagged lists or columns, a
-	 * small set of values.
-	 */
-
-	assert(p->offset < p->rmargin);
-	maxvis = p->rmargin - p->offset;
-	mmax = p->maxrmargin - p->offset;
-	bp = TERMP_NOBREAK & p->flags ? mmax : maxvis;
-	vis = 0;
-
-	/*
-	 * If in the standard case (left-justified), then begin with our
-	 * indentation, otherwise (columns, etc.) just start spitting
-	 * out text.
-	 */
-
-	if ( ! (p->flags & TERMP_NOLPAD))
-		/* LINTED */
-		for (j = 0; j < (int)p->offset; j++)
-			putchar(' ');
-
-	for (i = 0; i < (int)p->col; i++) {
-		/*
-		 * Count up visible word characters.  Control sequences
-		 * (starting with the CSI) aren't counted.  A space
-		 * generates a non-printing word, which is valid (the
-		 * space is printed according to regular spacing rules).
-		 */
-
-		/* LINTED */
-		for (j = i, vsz = 0; j < (int)p->col; j++) {
-			if (' ' == p->buf[j])
-				break;
-			else if (8 == p->buf[j])
-				j += 1;
-			else
-				vsz++;
-		}
-
-		/*
-		 * Do line-breaking.  If we're greater than our
-		 * break-point and already in-line, break to the next
-		 * line and start writing.  If we're at the line start,
-		 * then write out the word (TODO: hyphenate) and break
-		 * in a subsequent loop invocation.
-		 */
-
-		if ( ! (TERMP_NOBREAK & p->flags)) {
-			if (vis && vis + vsz > bp) {
-				putchar('\n');
-				for (j = 0; j < (int)p->offset; j++)
-					putchar(' ');
-				vis = 0;
-			} else if (vis + vsz > bp)
-				warnx("word breaks right margin");
-
-			/* TODO: hyphenate. */
-
-		} else {
-			if (vis && vis + vsz > bp) {
-				putchar('\n');
-				for (j = 0; j < (int)p->rmargin; j++)
-					putchar(' ');
-				vis = p->rmargin - p->offset;
-			} else if (vis + vsz > bp) 
-				warnx("word breaks right margin");
-
-			/* TODO: hyphenate. */
-		}
-
-		/* 
-		 * Write out the word and a trailing space.  Omit the
-		 * space if we're the last word in the line or beyond
-		 * our breakpoint.
-		 */
-
-		for ( ; i < (int)p->col; i++) {
-			if (' ' == p->buf[i])
-				break;
-			putchar(p->buf[i]);
-		}
-		vis += vsz;
-		if (i < (int)p->col && vis <= bp) {
-			putchar(' ');
-			vis++;
-		}
-	}
-
-	/*
-	 * If we've overstepped our maximum visible no-break space, then
-	 * cause a newline and offset at the right margin.
-	 */
-
-	if ((TERMP_NOBREAK & p->flags) && vis >= maxvis) {
-		if ( ! (TERMP_NONOBREAK & p->flags)) {
-			putchar('\n');
-			for (i = 0; i < (int)p->rmargin; i++)
-				putchar(' ');
-		}
-		p->col = 0;
-		return;
-	}
-
-	/*
-	 * If we're not to right-marginalise it (newline), then instead
-	 * pad to the right margin and stay off.
-	 */
-
-	if (p->flags & TERMP_NOBREAK) {
-		if ( ! (TERMP_NONOBREAK & p->flags))
-			for ( ; vis < maxvis; vis++)
-				putchar(' ');
-	} else
-		putchar('\n');
-
-	p->col = 0;
-}
-
-
-/* 
- * A newline only breaks an existing line; it won't assert vertical
- * space.  All data in the output buffer is flushed prior to the newline
- * assertion.
- */
-void
-newln(struct termp *p)
-{
-
-	p->flags |= TERMP_NOSPACE;
-	if (0 == p->col) {
-		p->flags &= ~TERMP_NOLPAD;
-		return;
-	}
-	flushln(p);
-	p->flags &= ~TERMP_NOLPAD;
-}
-
-
-/*
- * Asserts a vertical space (a full, empty line-break between lines).
- * Note that if used twice, this will cause two blank spaces and so on.
- * All data in the output buffer is flushed prior to the newline
- * assertion.
- */
-void
-vspace(struct termp *p)
-{
-
-	newln(p);
-	putchar('\n');
-}
-
-
-/*
- * Break apart a word into "pwords" (partial-words, usually from
- * breaking up a phrase into individual words) and, eventually, put them
- * into the output buffer.  If we're a literal word, then don't break up
- * the word and put it verbatim into the output buffer.
- */
-void
-word(struct termp *p, const char *word)
-{
-	int 		 i, j, len;
-
-	if (p->flags & TERMP_LITERAL) {
-		pword(p, word, (int)strlen(word));
-		return;
-	}
-
-	if (0 == (len = (int)strlen(word)))
-		errx(1, "blank line not in literal context");
-
-	if (mdoc_isdelim(word)) {
-		if ( ! (p->flags & TERMP_IGNDELIM))
-			p->flags |= TERMP_NOSPACE;
-		p->flags &= ~TERMP_IGNDELIM;
-	}
-
-	/* LINTED */
-	for (j = i = 0; i < len; i++) {
-		if (' ' != word[i]) {
-			j++;
-			continue;
-		} 
-		
-		/* Escaped spaces don't delimit... */
-		if (i && ' ' == word[i] && '\\' == word[i - 1]) {
-			j++;
-			continue;
-		}
-
-		if (0 == j)
-			continue;
-		assert(i >= j);
-		pword(p, &word[i - j], j);
-		j = 0;
-	}
-	if (j > 0) {
-		assert(i >= j);
-		pword(p, &word[i - j], j);
-	}
-}
-
-
-/*
- * This is the main function for printing out nodes.  It's constituted
- * of PRE and POST functions, which correspond to prefix and infix
- * processing.  The termpair structure allows data to persist between
- * prefix and postfix invocations.
- */
-static void
-body(struct termp *p, struct termpair *ppair,
-		const struct mdoc_meta *meta,
-		const struct mdoc_node *node)
-{
-	int		 dochild;
-	struct termpair	 pair;
-
-	/* Some quick sanity-checking. */
-
-	sanity(node);
-
-	/* Pre-processing. */
-
-	dochild = 1;
-	pair.ppair = ppair;
-	pair.type = 0;
-	pair.offset = pair.rmargin = 0;
-	pair.flag = 0;
-	pair.count = 0;
-
-	if (MDOC_TEXT != node->type) {
-		if (termacts[node->tok].pre)
-			if ( ! (*termacts[node->tok].pre)(p, &pair, meta, node))
-				dochild = 0;
-	} else /* MDOC_TEXT == node->type */
-		word(p, node->string);
-
-	/* Children. */
-
-	if (TERMPAIR_FLAG & pair.type)
-		p->flags |= pair.flag;
-
-	if (dochild && node->child)
-		body(p, &pair, meta, node->child);
-
-	if (TERMPAIR_FLAG & pair.type)
-		p->flags &= ~pair.flag;
-
-	/* Post-processing. */
-
-	if (MDOC_TEXT != node->type)
-		if (termacts[node->tok].post)
-			(*termacts[node->tok].post)(p, &pair, meta, node);
-
-	/* Siblings. */
-
-	if (node->next)
-		body(p, ppair, meta, node->next);
-}
-
-
-static void
-footer(struct termp *p, const struct mdoc_meta *meta)
-{
-	struct tm	*tm;
-	char		*buf, *os;
-
-	if (NULL == (buf = malloc(p->rmargin)))
-		err(1, "malloc");
-	if (NULL == (os = malloc(p->rmargin)))
-		err(1, "malloc");
-
-	tm = localtime(&meta->date);
-
-#ifdef __OpenBSD__
-	if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm))
-#else
-	if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm))
-#endif
-		err(1, "strftime");
-
-	(void)strlcpy(os, meta->os, p->rmargin);
-
-	/*
-	 * This is /slightly/ different from regular groff output
-	 * because we don't have page numbers.  Print the following:
-	 *
-	 * OS                                            MDOCDATE
-	 */
-
-	vspace(p);
-
-	p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
-	p->rmargin = p->maxrmargin - strlen(buf);
-	p->offset = 0;
-
-	word(p, os);
-	flushln(p);
-
-	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
-	p->offset = p->rmargin;
-	p->rmargin = p->maxrmargin;
-	p->flags &= ~TERMP_NOBREAK;
-
-	word(p, buf);
-	flushln(p);
-
-	free(buf);
-	free(os);
-}
-
-
-static void
-header(struct termp *p, const struct mdoc_meta *meta)
-{
-	char		*buf, *title;
-
-	p->rmargin = p->maxrmargin;
-	p->offset = 0;
-
-	if (NULL == (buf = malloc(p->rmargin)))
-		err(1, "malloc");
-	if (NULL == (title = malloc(p->rmargin)))
-		err(1, "malloc");
-
-	/*
-	 * The header is strange.  It has three components, which are
-	 * really two with the first duplicated.  It goes like this:
-	 *
-	 * IDENTIFIER              TITLE                   IDENTIFIER
-	 *
-	 * The IDENTIFIER is NAME(SECTION), which is the command-name
-	 * (if given, or "unknown" if not) followed by the manual page
-	 * section.  These are given in `Dt'.  The TITLE is a free-form
-	 * string depending on the manual volume.  If not specified, it
-	 * switches on the manual section.
-	 */
-
-	assert(meta->vol);
-	(void)strlcpy(buf, meta->vol, p->rmargin);
-
-	if (meta->arch) {
-		(void)strlcat(buf, " (", p->rmargin);
-		(void)strlcat(buf, meta->arch, p->rmargin);
-		(void)strlcat(buf, ")", p->rmargin);
-	}
-
-	(void)snprintf(title, p->rmargin, "%s(%d)", 
-			meta->title, meta->msec);
-
-	p->offset = 0;
-	p->rmargin = (p->maxrmargin - strlen(buf)) / 2;
-	p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
-
-	word(p, title);
-	flushln(p);
-
-	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
-	p->offset = p->rmargin;
-	p->rmargin = p->maxrmargin - strlen(title);
-
-	word(p, buf);
-	flushln(p);
-
-	p->offset = p->rmargin;
-	p->rmargin = p->maxrmargin;
-	p->flags &= ~TERMP_NOBREAK;
-	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
-
-	word(p, title);
-	flushln(p);
-
-	p->rmargin = p->maxrmargin;
-	p->offset = 0;
-	p->flags &= ~TERMP_NOSPACE;
-
-	free(title);
-	free(buf);
-}
-
-
-/*
- * Determine the symbol indicated by an escape sequences, that is, one
- * starting with a backslash.  Once done, we pass this value into the
- * output buffer by way of the symbol table.
- */
-static void
-nescape(struct termp *p, const char *word, size_t len)
-{
-	const char	*rhs;
-	size_t		 sz;
-
-	if (NULL == (rhs = a2ascii(p->symtab, word, len, &sz))) 
-		return;
-	stringa(p, rhs, sz);
-}
-
-
-/*
- * Handle an escape sequence: determine its length and pass it to the
- * escape-symbol look table.  Note that we assume mdoc(3) has validated
- * the escape sequence (we assert upon badly-formed escape sequences).
- */
-static void
-pescape(struct termp *p, const char *word, int *i, int len)
-{
-	int		 j;
-
-	if (++(*i) >= len)
-		return;
-
-	if ('(' == word[*i]) {
-		(*i)++;
-		if (*i + 1 >= len)
-			return;
-
-		nescape(p, &word[*i], 2);
-		(*i)++;
-		return;
-
-	} else if ('*' == word[*i]) { 
-		(*i)++;
-		if (*i >= len)
-			return;
-
-		switch (word[*i]) {
-		case ('('):
-			(*i)++;
-			if (*i + 1 >= len)
-				return;
-
-			nescape(p, &word[*i], 2);
-			(*i)++;
-			return;
-		case ('['):
-			break;
-		default:
-			nescape(p, &word[*i], 1);
-			return;
-		}
-
-	} else if ('[' != word[*i]) {
-		nescape(p, &word[*i], 1);
-		return;
-	}
-
-	(*i)++;
-	for (j = 0; word[*i] && ']' != word[*i]; (*i)++, j++)
-		/* Loop... */ ;
-
-	if (0 == word[*i])
-		return;
-
-	nescape(p, &word[*i - j], (size_t)j);
-}
-
-
-/*
- * Handle pwords, partial words, which may be either a single word or a
- * phrase that cannot be broken down (such as a literal string).  This
- * handles word styling.
- */
-static void
-pword(struct termp *p, const char *word, int len)
-{
-	int		 i;
-
-	if ( ! (TERMP_NOSPACE & p->flags) && 
-			! (TERMP_LITERAL & p->flags))
-		chara(p, ' ');
-
-	if ( ! (p->flags & TERMP_NONOSPACE))
-		p->flags &= ~TERMP_NOSPACE;
-
-	/* 
-	 * If ANSI (word-length styling), then apply our style now,
-	 * before the word.
-	 */
-
-	for (i = 0; i < len; i++) {
-		if ('\\' == word[i]) {
-			pescape(p, word, &i, len);
-			continue;
-		}
-
-		if (TERMP_STYLE & p->flags) {
-			if (TERMP_BOLD & p->flags) {
-				chara(p, word[i]);
-				chara(p, 8);
-			}
-			if (TERMP_UNDER & p->flags) {
-				chara(p, '_');
-				chara(p, 8);
-			}
-		}
-
-		chara(p, word[i]);
-	}
-}
-
-
-/*
- * Like chara() but for arbitrary-length buffers.  Resize the buffer by
- * a factor of two (if the buffer is less than that) or the buffer's
- * size.
- */
-static void
-stringa(struct termp *p, const char *c, size_t sz)
-{
-	size_t		 s;
-
-	if (0 == sz)
-		return;
-
-	assert(c);
-	if (p->col + sz >= p->maxcols) {
-		if (0 == p->maxcols)
-			p->maxcols = 256;
-		s = sz > p->maxcols * 2 ? sz : p->maxcols * 2;
-		p->buf = realloc(p->buf, s);
-		if (NULL == p->buf)
-			err(1, "realloc");
-		p->maxcols = s;
-	}
-
-	(void)memcpy(&p->buf[(int)p->col], c, sz);
-	p->col += sz;
-}
-
-
-/*
- * Insert a single character into the line-buffer.  If the buffer's
- * space is exceeded, then allocate more space by doubling the buffer
- * size.
- */
-static void
-chara(struct termp *p, char c)
-{
-	size_t		 s;
-
-	if (p->col + 1 >= p->maxcols) {
-		if (0 == p->maxcols)
-			p->maxcols = 256;
-		s = p->maxcols * 2;
-		p->buf = realloc(p->buf, s);
-		if (NULL == p->buf)
-			err(1, "realloc");
-		p->maxcols = s;
-	}
-	p->buf[(int)(p->col)++] = c;
-}
-
-
-static void
-sanity(const struct mdoc_node *n)
-{
-
-	switch (n->type) {
-	case (MDOC_TEXT):
-		if (n->child) 
-			errx(1, "regular form violated (1)");
-		if (NULL == n->parent) 
-			errx(1, "regular form violated (2)");
-		if (NULL == n->string)
-			errx(1, "regular form violated (3)");
-		switch (n->parent->type) {
-		case (MDOC_TEXT):
-			/* FALLTHROUGH */
-		case (MDOC_ROOT):
-			errx(1, "regular form violated (4)");
-			/* NOTREACHED */
-		default:
-			break;
-		}
-		break;
-	case (MDOC_ELEM):
-		if (NULL == n->parent)
-			errx(1, "regular form violated (5)");
-		switch (n->parent->type) {
-		case (MDOC_TAIL):
-			/* FALLTHROUGH */
-		case (MDOC_BODY):
-			/* FALLTHROUGH */
-		case (MDOC_HEAD):
-			break;
-		default:
-			errx(1, "regular form violated (6)");
-			/* NOTREACHED */
-		}
-		if (n->child) switch (n->child->type) {
-		case (MDOC_TEXT):
-			break;
-		default:
-			errx(1, "regular form violated (7(");
-			/* NOTREACHED */
-		}
-		break;
-	case (MDOC_HEAD):
-		/* FALLTHROUGH */
-	case (MDOC_BODY):
-		/* FALLTHROUGH */
-	case (MDOC_TAIL):
-		if (NULL == n->parent)
-			errx(1, "regular form violated (8)");
-		if (MDOC_BLOCK != n->parent->type)
-			errx(1, "regular form violated (9)");
-		if (n->child) switch (n->child->type) {
-		case (MDOC_BLOCK):
-			/* FALLTHROUGH */
-		case (MDOC_ELEM):
-			/* FALLTHROUGH */
-		case (MDOC_TEXT):
-			break;
-		default:
-			errx(1, "regular form violated (a)");
-			/* NOTREACHED */
-		}
-		break;
-	case (MDOC_BLOCK):
-		if (NULL == n->parent)
-			errx(1, "regular form violated (b)");
-		if (NULL == n->child)
-			errx(1, "regular form violated (c)");
-		switch (n->parent->type) {
-		case (MDOC_ROOT):
-			/* FALLTHROUGH */
-		case (MDOC_HEAD):
-			/* FALLTHROUGH */
-		case (MDOC_BODY):
-			/* FALLTHROUGH */
-		case (MDOC_TAIL):
-			break;
-		default:
-			errx(1, "regular form violated (d)");
-			/* NOTREACHED */
-		}
-		switch (n->child->type) {
-		case (MDOC_ROOT):
-			/* FALLTHROUGH */
-		case (MDOC_ELEM):
-			errx(1, "regular form violated (e)");
-			/* NOTREACHED */
-		default:
-			break;
-		}
-		break;
-	case (MDOC_ROOT):
-		if (n->parent)
-			errx(1, "regular form violated (f)");
-		if (NULL == n->child)
-			errx(1, "regular form violated (10)");
-		switch (n->child->type) {
-		case (MDOC_BLOCK):
-			break;
-		default:
-			errx(1, "regular form violated (11)");
-			/* NOTREACHED */
-		}
-		break;
-	}
-}
-
-
-static int
-merr(void *arg, int line, int col, const char *msg)
-{
-
-	warnx("error: %s (line %d, column %d)", msg, line, col);
-	return(0);
-}
-
-
-static int
-mwarn(void *arg, int line, int col, 
-		enum mdoc_warn type, const char *msg)
-{
-	int		 flags;
-	char		*wtype;
-
-	flags = *(int *)arg;
-	wtype = NULL;
-
-	switch (type) {
-	case (WARN_COMPAT):
-		wtype = "compat";
-		if (flags & WARN_WCOMPAT)
-			break;
-		return(1);
-	case (WARN_SYNTAX):
-		wtype = "syntax";
-		if (flags & WARN_WSYNTAX)
-			break;
-		return(1);
-	}
-
-	assert(wtype);
-	warnx("%s warning: %s (line %d, column %d)", 
-			wtype, msg, line, col);
-
-	if ( ! (flags & WARN_WERR))
-		return(1);
-
-	warnx("%s: considering warnings as errors", 
-			__progname);
-	return(0);
-}
-
-