File: [cvsweb.bsd.lv] / mandoc / roff.c (download)
Revision 1.7, Wed Nov 26 21:42:59 2008 UTC (15 years, 5 months ago) by kristaps
Branch: MAIN
Changes since 1.6: +139 -63 lines
Considerable fixes.
|
/* $Id: roff.c,v 1.7 2008/11/26 21:42:59 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* 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 <assert.h>
#include <ctype.h>
#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "libmdocml.h"
#include "private.h"
/* FIXME: warn if Pp occurs before/after Sh etc. (see mdoc.samples). */
/* FIXME: warn about "X section only" macros. */
/* FIXME: warn about empty lists. */
/* FIXME: ; : } ) (etc.) after text macros? */
#define ROFF_MAXARG 10
enum roffd {
ROFF_ENTER = 0,
ROFF_EXIT
};
enum rofftype {
ROFF_COMMENT,
ROFF_TEXT,
ROFF_LAYOUT
};
#define ROFFCALL_ARGS \
int tok, struct rofftree *tree, \
const char *argv[], enum roffd type
struct rofftree;
struct rofftok {
int (*cb)(ROFFCALL_ARGS); /* Callback. */
const int *args; /* Args (or NULL). */
const int *parents;
const int *children;
int ctx;
enum rofftype type; /* Type of macro. */
int flags;
#define ROFF_PARSED (1 << 0) /* "Parsed". */
#define ROFF_CALLABLE (1 << 1) /* "Callable". */
#define ROFF_QUOTES (1 << 2) /* Quoted args. */
};
struct roffarg {
int flags;
#define ROFF_VALUE (1 << 0) /* Has a value. */
};
struct roffnode {
int tok; /* Token id. */
struct roffnode *parent; /* Parent (or NULL). */
size_t line; /* Parsed at line. */
};
struct rofftree {
struct roffnode *last; /* Last parsed node. */
time_t date; /* `Dd' results. */
char os[64]; /* `Os' results. */
char title[64]; /* `Dt' results. */
char section[64]; /* `Dt' results. */
char volume[64]; /* `Dt' results. */
int state;
#define ROFF_PRELUDE (1 << 1) /* In roff prelude. */
/* FIXME: if we had prev ptrs, this wouldn't be necessary. */
#define ROFF_PRELUDE_Os (1 << 2) /* `Os' is parsed. */
#define ROFF_PRELUDE_Dt (1 << 3) /* `Dt' is parsed. */
#define ROFF_PRELUDE_Dd (1 << 4) /* `Dd' is parsed. */
#define ROFF_BODY (1 << 5) /* In roff body. */
struct md_mbuf *mbuf; /* Output (or NULL). */
const struct md_args *args; /* Global args. */
const struct md_rbuf *rbuf; /* Input. */
const struct roffcb *cb;
};
static int roff_Dd(ROFFCALL_ARGS);
static int roff_Dt(ROFFCALL_ARGS);
static int roff_Os(ROFFCALL_ARGS);
static int roff_layout(ROFFCALL_ARGS);
static int roff_text(ROFFCALL_ARGS);
static int roff_comment(ROFFCALL_ARGS);
static struct roffnode *roffnode_new(int, struct rofftree *);
static void roffnode_free(int, struct rofftree *);
static int roffscan(int, const int *);
static int rofffindtok(const char *);
static int rofffindarg(const char *);
static int rofffindcallable(const char *);
static int roffargs(int, char *, char **);
static int roffargok(int, int);
static int roffnextopt(int, const char ***, char **);
static int roffparse(struct rofftree *, char *, size_t);
static int textparse(const struct rofftree *,
const char *, size_t);
static const int roffarg_An[] = { ROFF_Split, ROFF_Nosplit,
ROFF_ARGMAX };
static const int roffarg_Bd[] = { ROFF_Ragged, ROFF_Unfilled,
ROFF_Literal, ROFF_File, ROFF_Offset, ROFF_ARGMAX };
static const int roffarg_Ex[] = { ROFF_Std, ROFF_ARGMAX };
static const int roffarg_Rv[] = { ROFF_Std, ROFF_ARGMAX };
static const int roffarg_Bl[] = { ROFF_Bullet, ROFF_Dash,
ROFF_Hyphen, ROFF_Item, ROFF_Enum, ROFF_Tag, ROFF_Diag,
ROFF_Hang, ROFF_Ohang, ROFF_Inset, ROFF_Column, ROFF_Offset,
ROFF_ARGMAX };
static const int roffarg_St[] = {
ROFF_p1003_1_88, ROFF_p1003_1_90, ROFF_p1003_1_96,
ROFF_p1003_1_2001, ROFF_p1003_1_2004, ROFF_p1003_1,
ROFF_p1003_1b, ROFF_p1003_1b_93, ROFF_p1003_1c_95,
ROFF_p1003_1g_2000, ROFF_p1003_2_92, ROFF_p1387_2_95,
ROFF_p1003_2, ROFF_p1387_2, ROFF_isoC_90, ROFF_isoC_amd1,
ROFF_isoC_tcor1, ROFF_isoC_tcor2, ROFF_isoC_99, ROFF_ansiC,
ROFF_ansiC_89, ROFF_ansiC_99, ROFF_ieee754, ROFF_iso8802_3,
ROFF_xpg3, ROFF_xpg4, ROFF_xpg4_2, ROFF_xpg4_3, ROFF_xbd5,
ROFF_xcu5, ROFF_xsh5, ROFF_xns5, ROFF_xns5_2d2_0,
ROFF_xcurses4_2, ROFF_susv2, ROFF_susv3, ROFF_svid4,
ROFF_ARGMAX };
static const int roffchild_Oo[] = { ROFF_Op, ROFF_Oc, ROFF_MAX };
static const int roffchild_Bl[] = { ROFF_It, ROFF_El, ROFF_MAX };
static const int roffchild_Fo[] = { ROFF_Fa, ROFF_Fc, ROFF_MAX };
static const int roffparent_El[] = { ROFF_Bl, ROFF_It, ROFF_MAX };
static const int roffparent_Fc[] = { ROFF_Fo, ROFF_Fa, ROFF_MAX };
static const int roffparent_Oc[] = { ROFF_Oo, ROFF_Oc, ROFF_MAX };
static const int roffparent_It[] = { ROFF_Bl, ROFF_MAX };
/* Table of all known tokens. */
static const struct rofftok tokens[ROFF_MAX] = {
{roff_comment, NULL, NULL, NULL, 0, ROFF_COMMENT, 0 }, /* \" */
{ roff_Dd, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dd */
{ roff_Dt, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dt */
{ roff_Os, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Os */
{ roff_layout, NULL, NULL, NULL, ROFF_Sh, ROFF_LAYOUT, ROFF_PARSED }, /* Sh */
{ roff_layout, NULL, NULL, NULL, ROFF_Ss, ROFF_LAYOUT, ROFF_PARSED }, /* Ss */
{ roff_text, NULL, NULL, NULL, ROFF_Pp, ROFF_TEXT, 0 }, /* Pp */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* D1 */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dl */
{ NULL, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bd */
{ NULL, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Ed */
{ roff_layout, roffarg_Bl, NULL, roffchild_Bl, 0, ROFF_LAYOUT, 0 }, /* Bl */
{ roff_layout, NULL, roffparent_El, NULL, ROFF_Bl, ROFF_LAYOUT, 0 }, /* El */
{ roff_layout, NULL, roffparent_It, NULL, ROFF_It, ROFF_LAYOUT, 0 }, /* It */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ad */
{ roff_text, roffarg_An, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* An */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ar */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_QUOTES }, /* Cd */ /* XXX man.4 only */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Cm */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dv */ /* XXX needs arg */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Er */ /* XXX needs arg */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ev */ /* XXX needs arg */
{ roff_text, roffarg_Ex, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ex */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fa */ /* XXX needs arg */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Fd */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fl */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fn */ /* XXX needs arg */ /* FIXME */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ft */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ic */ /* XXX needs arg */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* In */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Li */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Nd */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Nm */ /* FIXME */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Op */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ot */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pa */
{ roff_text, roffarg_Rv, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Rv */
{ roff_text, roffarg_St, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* St */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Va */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Vt */ /* XXX needs arg */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xr */ /* XXX needs arg */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %A */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %B */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %D */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %I */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %J */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %N */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %O */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %P */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %R */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %T */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %V */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ac */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ao */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Aq */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* At */ /* XXX at most 2 args */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Bf */ /* FIXME */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bo */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bq */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Bsx */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Bx */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Db */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Do */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dq */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ec */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ef */ /* FIXME */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Em */ /* XXX needs arg */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Eo */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Fx */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ms */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* No */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ns */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Nx */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ox */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Pf */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Po */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pq */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ql */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qo */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qq */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Re */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Rs */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* So */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sq */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Sm */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sx */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sy */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Tn */
{ roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ux */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xc */
{ NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xo */
{ roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Fo */
{ roff_layout, NULL, roffparent_Fc, NULL, ROFF_Fo, ROFF_LAYOUT, 0 }, /* Fc */
{ roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Oo */
{ roff_layout, NULL, roffparent_Oc, NULL, ROFF_Oo, ROFF_LAYOUT, 0 }, /* Oc */
};
/* Table of all known token arguments. */
static const struct roffarg tokenargs[ROFF_ARGMAX] = {
{ 0 }, /* split */
{ 0 }, /* nosplit */
{ 0 }, /* ragged */
{ 0 }, /* unfilled */
{ 0 }, /* literal */
{ ROFF_VALUE }, /* file */
{ ROFF_VALUE }, /* offset */
{ 0 }, /* bullet */
{ 0 }, /* dash */
{ 0 }, /* hyphen */
{ 0 }, /* item */
{ 0 }, /* enum */
{ 0 }, /* tag */
{ 0 }, /* diag */
{ 0 }, /* hang */
{ 0 }, /* ohang */
{ 0 }, /* inset */
{ 0 }, /* column */
{ 0 }, /* width */
{ 0 }, /* compact */
};
const char *const toknamesp[ROFF_MAX] =
{
"\\\"",
"Dd", /* Title macros. */
"Dt",
"Os",
"Sh", /* Layout macros */
"Ss",
"Pp",
"D1",
"Dl",
"Bd",
"Ed",
"Bl",
"El",
"It",
"Ad", /* Text macros. */
"An",
"Ar",
"Cd",
"Cm",
"Dv",
"Er",
"Ev",
"Ex",
"Fa",
"Fd",
"Fl",
"Fn",
"Ft",
"Ic",
"In",
"Li",
"Nd",
"Nm",
"Op",
"Ot",
"Pa",
"Rv",
"St",
"Va",
"Vt",
"Xr",
"\%A", /* General text macros. */
"\%B",
"\%D",
"\%I",
"\%J",
"\%N",
"\%O",
"\%P",
"\%R",
"\%T",
"\%V",
"Ac",
"Ao",
"Aq",
"At",
"Bc",
"Bf",
"Bo",
"Bq",
"Bsx",
"Bx",
"Db",
"Dc",
"Do",
"Dq",
"Ec",
"Ef",
"Em",
"Eo",
"Fx",
"Ms",
"No",
"Ns",
"Nx",
"Ox",
"Pc",
"Pf",
"Po",
"Pq",
"Qc",
"Ql",
"Qo",
"Qq",
"Re",
"Rs",
"Sc",
"So",
"Sq",
"Sm",
"Sx",
"Sy",
"Tn",
"Ux",
"Xc", /* FIXME: do not support! */
"Xo", /* FIXME: do not support! */
"Fo",
"Fc",
"Oo",
"Oc",
};
const char *const tokargnamesp[ROFF_ARGMAX] =
{
"split",
"nosplit",
"ragged",
"unfilled",
"literal",
"file",
"offset",
"bullet",
"dash",
"hyphen",
"item",
"enum",
"tag",
"diag",
"hang",
"ohang",
"inset",
"column",
"width",
"compact",
"std",
"-p1003.1-88",
"-p1003.1-90",
"-p1003.1-96",
"-p1003.1-2001",
"-p1003.1-2004",
"-p1003.1",
"-p1003.1b",
"-p1003.1b-93",
"-p1003.1c-95",
"-p1003.1g-2000",
"-p1003.2-92",
"-p1387.2-95",
"-p1003.2",
"-p1387.2",
"-isoC-90",
"-isoC-amd1",
"-isoC-tcor1",
"-isoC-tcor2",
"-isoC-99",
"-ansiC",
"-ansiC-89",
"-ansiC-99",
"-ieee754",
"-iso8802-3",
"-xpg3",
"-xpg4",
"-xpg4.2",
"-xpg4.3",
"-xbd5",
"-xcu5",
"-xsh5",
"-xns5",
"-xns5.2d2.0",
"-xcurses4.2",
"-susv2",
"-susv3",
"-svid4",
};
const char *const *toknames = toknamesp;
const char *const *tokargnames = tokargnamesp;
int
roff_free(struct rofftree *tree, int flush)
{
int error;
assert(tree->mbuf);
if ( ! flush)
tree->mbuf = NULL;
/* LINTED */
while (tree->last)
if ( ! (*tokens[tree->last->tok].cb)
(tree->last->tok, tree, NULL, ROFF_EXIT))
/* Disallow flushing. */
tree->mbuf = NULL;
error = tree->mbuf ? 0 : 1;
if (tree->mbuf && (ROFF_PRELUDE & tree->state)) {
warnx("%s: prelude never finished",
tree->rbuf->name);
error = 1;
}
free(tree);
return(error ? 0 : 1);
}
struct rofftree *
roff_alloc(const struct md_args *args, struct md_mbuf *out,
const struct md_rbuf *in, const struct roffcb *cb)
{
struct rofftree *tree;
if (NULL == (tree = calloc(1, sizeof(struct rofftree)))) {
warn("malloc");
return(NULL);
}
tree->state = ROFF_PRELUDE;
tree->args = args;
tree->mbuf = out;
tree->rbuf = in;
tree->cb = cb;
return(tree);
}
int
roff_engine(struct rofftree *tree, char *buf, size_t sz)
{
if (0 == sz) {
warnx("%s: blank line (line %zu)",
tree->rbuf->name,
tree->rbuf->line);
return(0);
} else if ('.' != *buf)
return(textparse(tree, buf, sz));
return(roffparse(tree, buf, sz));
}
static int
textparse(const struct rofftree *tree, const char *buf, size_t sz)
{
if (NULL == tree->last) {
warnx("%s: unexpected text (line %zu)",
tree->rbuf->name,
tree->rbuf->line);
return(0);
} else if (NULL == tree->last->parent) {
warnx("%s: disallowed text (line %zu)",
tree->rbuf->name,
tree->rbuf->line);
return(0);
}
/* Print text. */
return(1);
}
static int
roffargs(int tok, char *buf, char **argv)
{
int i;
(void)tok;/* FIXME: quotable strings? */
assert(tok >= 0 && tok < ROFF_MAX);
assert('.' == *buf);
/* LINTED */
for (i = 0; *buf && i < ROFF_MAXARG; i++) {
argv[i] = buf++;
while (*buf && ! isspace(*buf))
buf++;
if (0 == *buf) {
continue;
}
*buf++ = 0;
while (*buf && isspace(*buf))
buf++;
}
assert(i > 0);
if (i < ROFF_MAXARG)
argv[i] = NULL;
return(ROFF_MAXARG > i);
}
/* XXX */
static int
roffscan(int tok, const int *tokv)
{
if (NULL == tokv)
return(1);
for ( ; ROFF_MAX != *tokv; tokv++)
if (tok == *tokv)
return(1);
return(0);
}
static int
roffparse(struct rofftree *tree, char *buf, size_t sz)
{
int tok, t;
struct roffnode *n;
char *argv[ROFF_MAXARG];
const char **argvp;
assert(sz > 0);
if (ROFF_MAX == (tok = rofffindtok(buf + 1))) {
warnx("%s: unknown line macro (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
} else if (NULL == tokens[tok].cb) {
warnx("%s: macro `%s' not supported (line %zu)",
tree->rbuf->name, toknames[tok],
tree->rbuf->line);
return(0);
} else if (ROFF_COMMENT == tokens[tok].type)
return(1);
if ( ! roffargs(tok, buf, argv)) {
warnx("%s: too many args to `%s' (line %zu)",
tree->rbuf->name, toknames[tok],
tree->rbuf->line);
return(0);
} else
argvp = (const char **)argv + 1;
/*
* Prelude macros break some assumptions: branch now.
*/
if (ROFF_PRELUDE & tree->state) {
assert(NULL == tree->last);
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
} else
assert(tree->last);
assert(ROFF_BODY & tree->state);
/*
* First check that our possible parents and parent's possible
* children are satisfied.
*/
if ( ! roffscan(tree->last->tok, tokens[tok].parents)) {
warnx("%s: invalid parent `%s' for `%s' (line %zu)",
tree->rbuf->name,
toknames[tree->last->tok],
toknames[tok], tree->rbuf->line);
return(0);
}
#if 0
(void)printf("parse: macro `%s' (%d), parent `%s' (%d)\n",
toknames[tok], tok,
toknames[tree->last->tok], tree->last->tok);
if ( ! roffscan(tok, tokens[tree->last->tok].children)) {
warnx("%s: invalid child `%s' for `%s' (line %zu)",
tree->rbuf->name, toknames[tok],
toknames[tree->last->tok],
tree->rbuf->line);
return(0);
}
#endif
/*
* Branch if we're not a layout token.
*/
if (ROFF_LAYOUT != tokens[tok].type)
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
/*
* Check our scope rules.
*/
if (0 == tokens[tok].ctx)
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
if (tok == tokens[tok].ctx) {
for (n = tree->last; n; n = n->parent) {
assert(0 == tokens[n->tok].ctx ||
n->tok == tokens[n->tok].ctx);
if (n->tok == tok)
break;
}
if (NULL == n) {
#ifdef DEBUG
(void)printf("scope: new `%s'\n",
toknames[tok]);
#endif
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
}
do {
t = tree->last->tok;
#ifdef DEBUG
(void)printf("scope: closing `%s'\n",
toknames[t]);
#endif
if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
return(0);
} while (t != tok);
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
}
assert(tok != tokens[tok].ctx && 0 != tokens[tok].ctx);
do {
t = tree->last->tok;
#ifdef DEBUG
(void)printf("scope: closing `%s'\n", toknames[t]);
#endif
if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
return(0);
} while (t != tokens[tok].ctx);
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
}
static int
rofffindarg(const char *name)
{
size_t i;
/* FIXME: use a table, this is slow but ok for now. */
/* LINTED */
for (i = 0; i < ROFF_ARGMAX; i++)
/* LINTED */
if (0 == strcmp(name, tokargnames[i]))
return((int)i);
return(ROFF_ARGMAX);
}
static int
rofffindtok(const char *buf)
{
char token[4];
size_t i;
for (i = 0; *buf && ! isspace(*buf) && i < 3; i++, buf++)
token[i] = *buf;
if (i == 3) {
#ifdef DEBUG
(void)printf("lookup: macro too long: `%s'\n", buf);
#endif
return(ROFF_MAX);
}
token[i] = 0;
/* FIXME: use a table, this is slow but ok for now. */
/* LINTED */
for (i = 0; i < ROFF_MAX; i++)
/* LINTED */
if (0 == strcmp(toknames[i], token)) {
#ifdef DEBUG
(void)printf("lookup (good): `%s' (%d)\n",
token, (int)i);
#endif
return((int)i);
}
#ifdef DEBUG
(void)printf("lookup (bad): `%s'\n", token);
#endif
return(ROFF_MAX);
}
static int
rofffindcallable(const char *name)
{
int c;
if (ROFF_MAX == (c = rofffindtok(name)))
return(ROFF_MAX);
return(ROFF_CALLABLE & tokens[c].flags ? c : ROFF_MAX);
}
static struct roffnode *
roffnode_new(int tokid, struct rofftree *tree)
{
struct roffnode *p;
if (NULL == (p = malloc(sizeof(struct roffnode)))) {
warn("malloc");
return(NULL);
}
p->line = tree->rbuf->line;
p->tok = tokid;
p->parent = tree->last;
tree->last = p;
return(p);
}
static int
roffargok(int tokid, int argid)
{
const int *c;
if (NULL == (c = tokens[tokid].args))
return(0);
for ( ; ROFF_ARGMAX != *c; c++)
if (argid == *c)
return(1);
return(0);
}
static void
roffnode_free(int tokid, struct rofftree *tree)
{
struct roffnode *p;
assert(tree->last);
assert(tree->last->tok == tokid);
p = tree->last;
tree->last = tree->last->parent;
free(p);
}
static int
roffnextopt(int tok, const char ***in, char **val)
{
const char *arg, **argv;
int v;
*val = NULL;
argv = *in;
assert(argv);
if (NULL == (arg = *argv))
return(-1);
if ('-' != *arg)
return(-1);
/* FIXME: should we let this slide... ? */
if (ROFF_ARGMAX == (v = rofffindarg(&arg[1])))
return(-1);
/* FIXME: should we let this slide... ? */
if ( ! roffargok(tok, v))
return(-1);
if ( ! (ROFF_VALUE & tokenargs[v].flags))
return(v);
*in = ++argv;
/* FIXME: what if this looks like a roff token or argument? */
return(*argv ? v : ROFF_ARGMAX);
}
/* ARGSUSED */
static int
roff_Dd(ROFFCALL_ARGS)
{
if (ROFF_BODY & tree->state) {
assert( ! (ROFF_PRELUDE & tree->state));
assert(ROFF_PRELUDE_Dd & tree->state);
return(roff_text(tok, tree, argv, type));
}
assert(ROFF_PRELUDE & tree->state);
assert( ! (ROFF_BODY & tree->state));
if (ROFF_PRELUDE_Dd & tree->state) {
warnx("%s: prelude `Dd' repeated (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
} else if (ROFF_PRELUDE_Dt & tree->state) {
warnx("%s: prelude `Dd' out-of-order (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
}
/* TODO: parse date. */
assert(NULL == tree->last);
tree->state |= ROFF_PRELUDE_Dd;
return(1);
}
/* ARGSUSED */
static int
roff_Dt(ROFFCALL_ARGS)
{
if (ROFF_BODY & tree->state) {
assert( ! (ROFF_PRELUDE & tree->state));
assert(ROFF_PRELUDE_Dt & tree->state);
return(roff_text(tok, tree, argv, type));
}
assert(ROFF_PRELUDE & tree->state);
assert( ! (ROFF_BODY & tree->state));
if ( ! (ROFF_PRELUDE_Dd & tree->state)) {
warnx("%s: prelude `Dt' out-of-order (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
} else if (ROFF_PRELUDE_Dt & tree->state) {
warnx("%s: prelude `Dt' repeated (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
}
/* TODO: parse date. */
assert(NULL == tree->last);
tree->state |= ROFF_PRELUDE_Dt;
return(1);
}
/* ARGSUSED */
static int
roff_Os(ROFFCALL_ARGS)
{
if (ROFF_EXIT == type) {
assert(ROFF_PRELUDE_Os & tree->state);
return(roff_layout(tok, tree, argv, type));
} else if (ROFF_BODY & tree->state) {
assert( ! (ROFF_PRELUDE & tree->state));
assert(ROFF_PRELUDE_Os & tree->state);
return(roff_text(tok, tree, argv, type));
}
assert(ROFF_PRELUDE & tree->state);
if ( ! (ROFF_PRELUDE_Dt & tree->state) ||
! (ROFF_PRELUDE_Dd & tree->state)) {
warnx("%s: prelude `Os' out-of-order (line %zu)",
tree->rbuf->name, tree->rbuf->line);
return(0);
}
/* TODO: extract OS. */
tree->state |= ROFF_PRELUDE_Os;
tree->state &= ~ROFF_PRELUDE;
tree->state |= ROFF_BODY;
assert(NULL == tree->last);
return(roff_layout(tok, tree, argv, type));
}
/* ARGSUSED */
static int
roff_layout(ROFFCALL_ARGS)
{
int i, c, argcp[ROFF_MAXARG];
char *v, *argvp[ROFF_MAXARG];
if (ROFF_PRELUDE & tree->state) {
warnx("%s: macro `%s' called in prelude (line %zu)",
tree->rbuf->name,
toknames[tok],
tree->rbuf->line);
return(0);
}
if (ROFF_EXIT == type) {
roffnode_free(tok, tree);
return((*tree->cb->roffblkout)(tok));
}
i = 0;
while (-1 != (c = roffnextopt(tok, &argv, &v))) {
if (ROFF_ARGMAX == c) {
warnx("%s: error parsing `%s' args (line %zu)",
tree->rbuf->name,
toknames[tok],
tree->rbuf->line);
return(0);
} else if ( ! roffargok(tok, c)) {
warnx("%s: arg `%s' not for `%s' (line %zu)",
tree->rbuf->name,
tokargnames[c],
toknames[tok],
tree->rbuf->line);
return(0);
}
argcp[i] = c;
argvp[i] = v;
i++;
argv++;
}
argcp[i] = ROFF_ARGMAX;
argvp[i] = NULL;
if (NULL == roffnode_new(tok, tree))
return(0);
if ( ! (*tree->cb->roffin)(tok, argcp, argvp))
return(0);
if ( ! (ROFF_PARSED & tokens[tok].flags)) {
/* TODO: print all tokens. */
if ( ! ((*tree->cb->roffout)(tok)))
return(0);
return((*tree->cb->roffblkin)(tok));
}
while (*argv) {
if (2 >= strlen(*argv) && ROFF_MAX !=
(c = rofffindcallable(*argv)))
if ( ! (*tokens[c].cb)(c, tree,
argv + 1, ROFF_ENTER))
return(0);
/* TODO: print token. */
argv++;
}
if ( ! ((*tree->cb->roffout)(tok)))
return(0);
return((*tree->cb->roffblkin)(tok));
}
/* ARGSUSED */
static int
roff_text(ROFFCALL_ARGS)
{
int i, c, argcp[ROFF_MAXARG];
char *v, *argvp[ROFF_MAXARG];
if (ROFF_PRELUDE & tree->state) {
warnx("%s: macro `%s' called in prelude (line %zu)",
tree->rbuf->name,
toknames[tok],
tree->rbuf->line);
return(0);
}
i = 0;
while (-1 != (c = roffnextopt(tok, &argv, &v))) {
if (ROFF_ARGMAX == c) {
warnx("%s: error parsing `%s' args (line %zu)",
tree->rbuf->name,
toknames[tok],
tree->rbuf->line);
return(0);
}
argcp[i] = c;
argvp[i] = v;
i++;
argv++;
}
argcp[i] = ROFF_ARGMAX;
argvp[i] = NULL;
if ( ! (*tree->cb->roffin)(tok, argcp, argvp))
return(0);
if ( ! (ROFF_PARSED & tokens[tok].flags)) {
/* TODO: print all tokens. */
return((*tree->cb->roffout)(tok));
}
while (*argv) {
if (2 >= strlen(*argv) && ROFF_MAX !=
(c = rofffindcallable(*argv)))
if ( ! (*tokens[c].cb)(c, tree,
argv + 1, ROFF_ENTER))
return(0);
/* TODO: print token. */
argv++;
}
return((*tree->cb->roffout)(tok));
}
/* ARGUSED */
static int
roff_comment(ROFFCALL_ARGS)
{
return(1);
}