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/* $Id: demandoc.c,v 1.2 2011/09/01 10:47:47 kristaps Exp $ */
/*
* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "man.h"
#include "mdoc.h"
#include "mandoc.h"
static void pline(int, int *, int *);
static void pman(const struct man_node *, int *, int *);
static void pmandoc(struct mparse *, int, const char *);
static void pmdoc(const struct mdoc_node *, int *, int *);
static void pstring(const char *, int, int *);
static void usage(void);
static const char *progname;
int
main(int argc, char *argv[])
{
struct mparse *mp;
int ch, i;
extern int optind;
extern char *optarg;
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
++progname;
mp = NULL;
while (-1 != (ch = getopt(argc, argv, "")))
switch (ch) {
default:
usage();
return((int)MANDOCLEVEL_BADARG);
}
argc -= optind;
argv += optind;
mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL);
assert(mp);
if (0 == argc)
pmandoc(mp, STDIN_FILENO, "<stdin>");
for (i = 0; i < argc; i++) {
mparse_reset(mp);
pmandoc(mp, -1, argv[i]);
}
mparse_free(mp);
return(MANDOCLEVEL_OK);
}
static void
usage(void)
{
fprintf(stderr, "usage: %s [files...]\n", progname);
}
static void
pmandoc(struct mparse *mp, int fd, const char *fn)
{
struct mdoc *mdoc;
struct man *man;
int line, col;
if (mparse_readfd(mp, fd, fn) >= MANDOCLEVEL_FATAL) {
fprintf(stderr, "%s: Parse failure\n", fn);
return;
}
mparse_result(mp, &mdoc, &man);
line = 1;
col = 0;
if (mdoc)
pmdoc(mdoc_node(mdoc), &line, &col);
else if (man)
pman(man_node(man), &line, &col);
else
return;
putchar('\n');
}
/*
* Strip the escapes out of a string, emitting the results.
*/
static void
pstring(const char *p, int col, int *colp)
{
enum mandoc_esc esc;
while (*colp < col) {
putchar(' ');
(*colp)++;
}
while ('\0' != *p) {
if ('\\' == *p) {
p++;
esc = mandoc_escape(&p, NULL, NULL);
if (ESCAPE_ERROR == esc)
return;
} else {
putchar(*p++);
(*colp)++;
}
}
}
/*
* Emit lines until we're in sync with our input.
*/
static void
pline(int line, int *linep, int *col)
{
while (*linep < line) {
putchar('\n');
(*linep)++;
}
*col = 0;
}
static void
pmdoc(const struct mdoc_node *p, int *line, int *col)
{
for ( ; p; p = p->next) {
if (MDOC_LINE & p->flags)
pline(p->line, line, col);
if (MDOC_TEXT == p->type)
pstring(p->string, p->pos, col);
if (p->child)
pmdoc(p->child, line, col);
}
}
static void
pman(const struct man_node *p, int *line, int *col)
{
for ( ; p; p = p->next) {
if (MAN_LINE & p->flags)
pline(p->line, line, col);
if (MAN_TEXT == p->type)
pstring(p->string, p->pos, col);
if (p->child)
pman(p->child, line, col);
}
}
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