freebsd-skq/contrib/mdocml/mdoc_man.c
2012-10-19 22:21:01 +00:00

638 lines
15 KiB
C

/* $Id: mdoc_man.c,v 1.9 2011/10/24 21:47:59 schwarze Exp $ */
/*
* Copyright (c) 2011 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include "mandoc.h"
#include "man.h"
#include "mdoc.h"
#include "main.h"
#define DECL_ARGS const struct mdoc_meta *m, \
const struct mdoc_node *n, \
struct mman *mm
struct mman {
int need_space; /* next word needs prior ws */
int need_nl; /* next word needs prior nl */
};
struct manact {
int (*cond)(DECL_ARGS); /* DON'T run actions */
int (*pre)(DECL_ARGS); /* pre-node action */
void (*post)(DECL_ARGS); /* post-node action */
const char *prefix; /* pre-node string constant */
const char *suffix; /* post-node string constant */
};
static int cond_body(DECL_ARGS);
static int cond_head(DECL_ARGS);
static void post_bd(DECL_ARGS);
static void post_dl(DECL_ARGS);
static void post_enc(DECL_ARGS);
static void post_nm(DECL_ARGS);
static void post_percent(DECL_ARGS);
static void post_pf(DECL_ARGS);
static void post_sect(DECL_ARGS);
static void post_sp(DECL_ARGS);
static int pre_ap(DECL_ARGS);
static int pre_bd(DECL_ARGS);
static int pre_br(DECL_ARGS);
static int pre_bx(DECL_ARGS);
static int pre_dl(DECL_ARGS);
static int pre_enc(DECL_ARGS);
static int pre_it(DECL_ARGS);
static int pre_nm(DECL_ARGS);
static int pre_ns(DECL_ARGS);
static int pre_pp(DECL_ARGS);
static int pre_sp(DECL_ARGS);
static int pre_sect(DECL_ARGS);
static int pre_ux(DECL_ARGS);
static int pre_xr(DECL_ARGS);
static void print_word(struct mman *, const char *);
static void print_node(DECL_ARGS);
static const struct manact manacts[MDOC_MAX + 1] = {
{ NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
{ NULL, NULL, NULL, NULL, NULL }, /* Dd */
{ NULL, NULL, NULL, NULL, NULL }, /* Dt */
{ NULL, NULL, NULL, NULL, NULL }, /* Os */
{ NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
{ NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
{ NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
{ cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
{ cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
{ cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
{ NULL, NULL, NULL, NULL, NULL }, /* Ed */
{ NULL, NULL, NULL, NULL, NULL }, /* Bl */
{ NULL, NULL, NULL, NULL, NULL }, /* El */
{ NULL, pre_it, NULL, NULL, NULL }, /* _It */
{ NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ad */
{ NULL, NULL, NULL, NULL, NULL }, /* _An */
{ NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Ar */
{ NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cd */
{ NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Cm */
{ NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Dv */
{ NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Er */
{ NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Ev */
{ NULL, pre_enc, post_enc, "The \\fB",
"\\fP\nutility exits 0 on success, and >0 if an error occurs."
}, /* Ex */
{ NULL, NULL, NULL, NULL, NULL }, /* _Fa */
{ NULL, NULL, NULL, NULL, NULL }, /* _Fd */
{ NULL, pre_enc, post_enc, "\\fB-", "\\fP" }, /* Fl */
{ NULL, NULL, NULL, NULL, NULL }, /* _Fn */
{ NULL, NULL, NULL, NULL, NULL }, /* _Ft */
{ NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ic */
{ NULL, NULL, NULL, NULL, NULL }, /* _In */
{ NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Li */
{ cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
{ NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
{ cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
{ NULL, NULL, NULL, NULL, NULL }, /* Ot */
{ NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Pa */
{ NULL, pre_enc, post_enc, "The \\fB",
"\\fP\nfunction returns the value 0 if successful;\n"
"otherwise the value -1 is returned and the global\n"
"variable \\fIerrno\\fP is set to indicate the error."
}, /* Rv */
{ NULL, NULL, NULL, NULL, NULL }, /* St */
{ NULL, NULL, NULL, NULL, NULL }, /* _Va */
{ NULL, NULL, NULL, NULL, NULL }, /* _Vt */
{ NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
{ NULL, NULL, post_percent, NULL, NULL }, /* _%A */
{ NULL, NULL, NULL, NULL, NULL }, /* _%B */
{ NULL, NULL, post_percent, NULL, NULL }, /* _%D */
{ NULL, NULL, NULL, NULL, NULL }, /* _%I */
{ NULL, pre_enc, post_percent, "\\fI", "\\fP" }, /* %J */
{ NULL, NULL, NULL, NULL, NULL }, /* _%N */
{ NULL, NULL, NULL, NULL, NULL }, /* _%O */
{ NULL, NULL, NULL, NULL, NULL }, /* _%P */
{ NULL, NULL, NULL, NULL, NULL }, /* _%R */
{ NULL, pre_enc, post_percent, "\"", "\"" }, /* %T */
{ NULL, NULL, NULL, NULL, NULL }, /* _%V */
{ NULL, NULL, NULL, NULL, NULL }, /* Ac */
{ cond_body, pre_enc, post_enc, "<", ">" }, /* Ao */
{ cond_body, pre_enc, post_enc, "<", ">" }, /* Aq */
{ NULL, NULL, NULL, NULL, NULL }, /* At */
{ NULL, NULL, NULL, NULL, NULL }, /* Bc */
{ NULL, NULL, NULL, NULL, NULL }, /* _Bf */
{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
{ NULL, pre_ux, NULL, "BSD/OS", NULL }, /* Bsx */
{ NULL, pre_bx, NULL, NULL, NULL }, /* Bx */
{ NULL, NULL, NULL, NULL, NULL }, /* Db */
{ NULL, NULL, NULL, NULL, NULL }, /* Dc */
{ cond_body, pre_enc, post_enc, "``", "''" }, /* Do */
{ cond_body, pre_enc, post_enc, "``", "''" }, /* Dq */
{ NULL, NULL, NULL, NULL, NULL }, /* _Ec */
{ NULL, NULL, NULL, NULL, NULL }, /* _Ef */
{ NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Em */
{ NULL, NULL, NULL, NULL, NULL }, /* _Eo */
{ NULL, pre_ux, NULL, "FreeBSD", NULL }, /* Fx */
{ NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Ms */
{ NULL, NULL, NULL, NULL, NULL }, /* No */
{ NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
{ NULL, pre_ux, NULL, "NetBSD", NULL }, /* Nx */
{ NULL, pre_ux, NULL, "OpenBSD", NULL }, /* Ox */
{ NULL, NULL, NULL, NULL, NULL }, /* Pc */
{ NULL, NULL, post_pf, NULL, NULL }, /* Pf */
{ cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
{ cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
{ NULL, NULL, NULL, NULL, NULL }, /* Qc */
{ cond_body, pre_enc, post_enc, "`", "'" }, /* Ql */
{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
{ NULL, NULL, NULL, NULL, NULL }, /* Re */
{ cond_body, pre_pp, NULL, NULL, NULL }, /* Rs */
{ NULL, NULL, NULL, NULL, NULL }, /* Sc */
{ cond_body, pre_enc, post_enc, "`", "'" }, /* So */
{ cond_body, pre_enc, post_enc, "`", "'" }, /* Sq */
{ NULL, NULL, NULL, NULL, NULL }, /* _Sm */
{ NULL, pre_enc, post_enc, "\\fI", "\\fP" }, /* Sx */
{ NULL, pre_enc, post_enc, "\\fB", "\\fP" }, /* Sy */
{ NULL, pre_enc, post_enc, "\\fR", "\\fP" }, /* Tn */
{ NULL, pre_ux, NULL, "UNIX", NULL }, /* Ux */
{ NULL, NULL, NULL, NULL, NULL }, /* _Xc */
{ NULL, NULL, NULL, NULL, NULL }, /* _Xo */
{ NULL, NULL, NULL, NULL, NULL }, /* _Fo */
{ NULL, NULL, NULL, NULL, NULL }, /* _Fc */
{ cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
{ NULL, NULL, NULL, NULL, NULL }, /* Oc */
{ NULL, NULL, NULL, NULL, NULL }, /* _Bk */
{ NULL, NULL, NULL, NULL, NULL }, /* _Ek */
{ NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
{ NULL, NULL, NULL, NULL, NULL }, /* Fr */
{ NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
{ NULL, NULL, NULL, NULL, NULL }, /* _Lb */
{ NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
{ NULL, NULL, NULL, NULL, NULL }, /* _Lk */
{ NULL, NULL, NULL, NULL, NULL }, /* _Mt */
{ cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
{ cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
{ NULL, NULL, NULL, NULL, NULL }, /* Brc */
{ NULL, NULL, NULL, NULL, NULL }, /* _%C */
{ NULL, NULL, NULL, NULL, NULL }, /* _Es */
{ NULL, NULL, NULL, NULL, NULL }, /* _En */
{ NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
{ NULL, NULL, NULL, NULL, NULL }, /* _%Q */
{ NULL, pre_br, NULL, NULL, NULL }, /* br */
{ NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
{ NULL, NULL, NULL, NULL, NULL }, /* _%U */
{ NULL, NULL, NULL, NULL, NULL }, /* _Ta */
{ NULL, NULL, NULL, NULL, NULL }, /* ROOT */
};
static void
print_word(struct mman *mm, const char *s)
{
if (mm->need_nl) {
/*
* If we need a newline, print it now and start afresh.
*/
putchar('\n');
mm->need_space = 0;
mm->need_nl = 0;
} else if (mm->need_space && '\0' != s[0])
/*
* If we need a space, only print it before
* (1) a nonzero length word;
* (2) a word that is non-punctuation; and
* (3) if punctuation, non-terminating puncutation.
*/
if (NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1])
putchar(' ');
/*
* Reassign needing space if we're not following opening
* punctuation.
*/
mm->need_space =
('(' != s[0] && '[' != s[0]) || '\0' != s[1];
for ( ; *s; s++) {
switch (*s) {
case (ASCII_NBRSP):
printf("\\~");
break;
case (ASCII_HYPH):
putchar('-');
break;
default:
putchar((unsigned char)*s);
break;
}
}
}
void
man_man(void *arg, const struct man *man)
{
/*
* Dump the keep buffer.
* We're guaranteed by now that this exists (is non-NULL).
* Flush stdout afterward, just in case.
*/
fputs(mparse_getkeep(man_mparse(man)), stdout);
fflush(stdout);
}
void
man_mdoc(void *arg, const struct mdoc *mdoc)
{
const struct mdoc_meta *m;
const struct mdoc_node *n;
struct mman mm;
m = mdoc_meta(mdoc);
n = mdoc_node(mdoc);
printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"",
m->title, m->msec, m->date, m->os, m->vol);
memset(&mm, 0, sizeof(struct mman));
mm.need_nl = 1;
print_node(m, n, &mm);
putchar('\n');
}
static void
print_node(DECL_ARGS)
{
const struct mdoc_node *prev, *sub;
const struct manact *act;
int cond, do_sub;
/*
* Break the line if we were parsed subsequent the current node.
* This makes the page structure be more consistent.
*/
prev = n->prev ? n->prev : n->parent;
if (prev && prev->line < n->line)
mm->need_nl = 1;
act = NULL;
cond = 0;
do_sub = 1;
if (MDOC_TEXT == n->type) {
/*
* Make sure that we don't happen to start with a
* control character at the start of a line.
*/
if (mm->need_nl && ('.' == *n->string ||
'\'' == *n->string)) {
print_word(mm, "\\&");
mm->need_space = 0;
}
print_word(mm, n->string);
} else {
/*
* Conditionally run the pre-node action handler for a
* node.
*/
act = manacts + n->tok;
cond = NULL == act->cond || (*act->cond)(m, n, mm);
if (cond && act->pre)
do_sub = (*act->pre)(m, n, mm);
}
/*
* Conditionally run all child nodes.
* Note that this iterates over children instead of using
* recursion. This prevents unnecessary depth in the stack.
*/
if (do_sub)
for (sub = n->child; sub; sub = sub->next)
print_node(m, sub, mm);
/*
* Lastly, conditionally run the post-node handler.
*/
if (cond && act->post)
(*act->post)(m, n, mm);
}
static int
cond_head(DECL_ARGS)
{
return(MDOC_HEAD == n->type);
}
static int
cond_body(DECL_ARGS)
{
return(MDOC_BODY == n->type);
}
/*
* Output a font encoding before a node, e.g., \fR.
* This obviously has no trailing space.
*/
static int
pre_enc(DECL_ARGS)
{
const char *prefix;
prefix = manacts[n->tok].prefix;
if (NULL == prefix)
return(1);
print_word(mm, prefix);
mm->need_space = 0;
return(1);
}
/*
* Output a font encoding subsequent a node, e.g., \fP.
*/
static void
post_enc(DECL_ARGS)
{
const char *suffix;
suffix = manacts[n->tok].suffix;
if (NULL == suffix)
return;
mm->need_space = 0;
print_word(mm, suffix);
}
/*
* Used in listings (percent = %A, e.g.).
* FIXME: this is incomplete.
* It doesn't print a nice ", and" for lists.
*/
static void
post_percent(DECL_ARGS)
{
post_enc(m, n, mm);
if (n->next)
print_word(mm, ",");
else {
print_word(mm, ".");
mm->need_nl = 1;
}
}
/*
* Print before a section header.
*/
static int
pre_sect(DECL_ARGS)
{
if (MDOC_HEAD != n->type)
return(1);
mm->need_nl = 1;
print_word(mm, manacts[n->tok].prefix);
print_word(mm, "\"");
mm->need_space = 0;
return(1);
}
/*
* Print subsequent a section header.
*/
static void
post_sect(DECL_ARGS)
{
if (MDOC_HEAD != n->type)
return;
mm->need_space = 0;
print_word(mm, "\"");
mm->need_nl = 1;
}
static int
pre_ap(DECL_ARGS)
{
mm->need_space = 0;
print_word(mm, "'");
mm->need_space = 0;
return(0);
}
static int
pre_bd(DECL_ARGS)
{
if (DISP_unfilled == n->norm->Bd.type ||
DISP_literal == n->norm->Bd.type) {
mm->need_nl = 1;
print_word(mm, ".nf");
}
mm->need_nl = 1;
return(1);
}
static void
post_bd(DECL_ARGS)
{
if (DISP_unfilled == n->norm->Bd.type ||
DISP_literal == n->norm->Bd.type) {
mm->need_nl = 1;
print_word(mm, ".fi");
}
mm->need_nl = 1;
}
static int
pre_br(DECL_ARGS)
{
mm->need_nl = 1;
print_word(mm, ".br");
mm->need_nl = 1;
return(0);
}
static int
pre_bx(DECL_ARGS)
{
n = n->child;
if (n) {
print_word(mm, n->string);
mm->need_space = 0;
n = n->next;
}
print_word(mm, "BSD");
if (NULL == n)
return(0);
mm->need_space = 0;
print_word(mm, "-");
mm->need_space = 0;
print_word(mm, n->string);
return(0);
}
static int
pre_dl(DECL_ARGS)
{
mm->need_nl = 1;
print_word(mm, ".RS 6n");
mm->need_nl = 1;
return(1);
}
static void
post_dl(DECL_ARGS)
{
mm->need_nl = 1;
print_word(mm, ".RE");
mm->need_nl = 1;
}
static int
pre_it(DECL_ARGS)
{
const struct mdoc_node *bln;
if (MDOC_HEAD == n->type) {
mm->need_nl = 1;
print_word(mm, ".TP");
bln = n->parent->parent->prev;
switch (bln->norm->Bl.type) {
case (LIST_bullet):
print_word(mm, "4n");
mm->need_nl = 1;
print_word(mm, "\\fBo\\fP");
break;
default:
if (bln->norm->Bl.width)
print_word(mm, bln->norm->Bl.width);
break;
}
mm->need_nl = 1;
}
return(1);
}
static int
pre_nm(DECL_ARGS)
{
if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
return(1);
print_word(mm, "\\fB");
mm->need_space = 0;
if (NULL == n->child)
print_word(mm, m->name);
return(1);
}
static void
post_nm(DECL_ARGS)
{
if (MDOC_ELEM != n->type && MDOC_HEAD != n->type)
return;
mm->need_space = 0;
print_word(mm, "\\fP");
}
static int
pre_ns(DECL_ARGS)
{
mm->need_space = 0;
return(0);
}
static void
post_pf(DECL_ARGS)
{
mm->need_space = 0;
}
static int
pre_pp(DECL_ARGS)
{
mm->need_nl = 1;
if (MDOC_It == n->parent->tok)
print_word(mm, ".sp");
else
print_word(mm, ".PP");
mm->need_nl = 1;
return(1);
}
static int
pre_sp(DECL_ARGS)
{
mm->need_nl = 1;
print_word(mm, ".sp");
return(1);
}
static void
post_sp(DECL_ARGS)
{
mm->need_nl = 1;
}
static int
pre_xr(DECL_ARGS)
{
n = n->child;
if (NULL == n)
return(0);
print_node(m, n, mm);
n = n->next;
if (NULL == n)
return(0);
mm->need_space = 0;
print_word(mm, "(");
print_node(m, n, mm);
print_word(mm, ")");
return(0);
}
static int
pre_ux(DECL_ARGS)
{
print_word(mm, manacts[n->tok].prefix);
if (NULL == n->child)
return(0);
mm->need_space = 0;
print_word(mm, "\\~");
mm->need_space = 0;
return(1);
}