version 1.8, 2009/03/26 11:16:21 |
version 1.93, 2015/01/24 01:58:33 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org> |
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2012, 2013, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org> |
|
* Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the |
* purpose with or without fee is hereby granted, provided that the above |
* above copyright notice and this permission notice appear in all |
* copyright notice and this permission notice appear in all copies. |
* copies. |
|
* |
* |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* PERFORMANCE OF THIS SOFTWARE. |
|
*/ |
*/ |
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#include "config.h" |
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#include <sys/types.h> |
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#include <assert.h> |
#include <assert.h> |
#include <ctype.h> |
#include <ctype.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <stdio.h> |
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#include <string.h> |
#include <string.h> |
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#include "man.h" |
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#include "mandoc.h" |
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#include "libmandoc.h" |
#include "libman.h" |
#include "libman.h" |
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static int man_args(struct man *, int, |
enum rew { |
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REW_REWIND, |
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REW_NOHALT, |
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REW_HALT |
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}; |
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static void blk_close(MACRO_PROT_ARGS); |
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static void blk_exp(MACRO_PROT_ARGS); |
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static void blk_imp(MACRO_PROT_ARGS); |
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static void in_line_eoln(MACRO_PROT_ARGS); |
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static int man_args(struct man *, int, |
int *, char *, char **); |
int *, char *, char **); |
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static void rew_scope(enum man_type, |
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struct man *, enum mant); |
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static enum rew rew_dohalt(enum mant, enum man_type, |
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const struct man_node *); |
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static enum rew rew_block(enum mant, enum man_type, |
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const struct man_node *); |
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int |
const struct man_macro __man_macros[MAN_MAX] = { |
man_macro(struct man *man, int tok, int line, |
{ in_line_eoln, MAN_NSCOPED }, /* br */ |
int ppos, int *pos, char *buf) |
{ in_line_eoln, MAN_BSCOPE }, /* TH */ |
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SH */ |
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SS */ |
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{ blk_imp, MAN_BSCOPE | MAN_SCOPED | MAN_FSCOPED }, /* TP */ |
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{ blk_imp, MAN_BSCOPE }, /* LP */ |
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{ blk_imp, MAN_BSCOPE }, /* PP */ |
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{ blk_imp, MAN_BSCOPE }, /* P */ |
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{ blk_imp, MAN_BSCOPE }, /* IP */ |
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{ blk_imp, MAN_BSCOPE }, /* HP */ |
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SM */ |
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SB */ |
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{ in_line_eoln, 0 }, /* BI */ |
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{ in_line_eoln, 0 }, /* IB */ |
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{ in_line_eoln, 0 }, /* BR */ |
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{ in_line_eoln, 0 }, /* RB */ |
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* R */ |
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* B */ |
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{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* I */ |
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{ in_line_eoln, 0 }, /* IR */ |
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{ in_line_eoln, 0 }, /* RI */ |
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{ in_line_eoln, MAN_NSCOPED }, /* na */ |
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{ in_line_eoln, MAN_NSCOPED }, /* sp */ |
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{ in_line_eoln, MAN_BSCOPE }, /* nf */ |
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{ in_line_eoln, MAN_BSCOPE }, /* fi */ |
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{ blk_close, MAN_BSCOPE }, /* RE */ |
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{ blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* RS */ |
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{ in_line_eoln, 0 }, /* DT */ |
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{ in_line_eoln, 0 }, /* UC */ |
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{ in_line_eoln, 0 }, /* PD */ |
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{ in_line_eoln, 0 }, /* AT */ |
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{ in_line_eoln, 0 }, /* in */ |
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{ in_line_eoln, 0 }, /* ft */ |
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{ in_line_eoln, 0 }, /* OP */ |
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{ in_line_eoln, MAN_BSCOPE }, /* EX */ |
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{ in_line_eoln, MAN_BSCOPE }, /* EE */ |
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{ blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* UR */ |
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{ blk_close, MAN_BSCOPE }, /* UE */ |
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{ in_line_eoln, 0 }, /* ll */ |
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}; |
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const struct man_macro * const man_macros = __man_macros; |
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void |
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man_unscope(struct man *man, const struct man_node *to) |
{ |
{ |
int w, la; |
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char *p; |
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struct man_node *n; |
struct man_node *n; |
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if ( ! man_elem_alloc(man, line, ppos, tok)) |
to = to->parent; |
return(0); |
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n = man->last; |
n = man->last; |
man->next = MAN_NEXT_CHILD; |
while (n != to) { |
|
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for (;;) { |
/* Reached the end of the document? */ |
la = *pos; |
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w = man_args(man, line, pos, buf, &p); |
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if (-1 == w) |
if (to == NULL && ! (n->flags & MAN_VALID)) { |
return(0); |
if (man->flags & (MAN_BLINE | MAN_ELINE) && |
if (0 == w) |
man_macros[n->tok].flags & MAN_SCOPED) { |
break; |
mandoc_vmsg(MANDOCERR_BLK_LINE, |
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man->parse, n->line, n->pos, |
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"EOF breaks %s", |
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man_macronames[n->tok]); |
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if (man->flags & MAN_ELINE) |
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man->flags &= ~MAN_ELINE; |
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else { |
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assert(n->type == MAN_HEAD); |
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n = n->parent; |
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man->flags &= ~MAN_BLINE; |
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} |
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man->last = n; |
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n = n->parent; |
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man_node_delete(man, man->last); |
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continue; |
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} |
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if (n->type == MAN_BLOCK && |
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man_macros[n->tok].flags & MAN_EXPLICIT) |
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mandoc_msg(MANDOCERR_BLK_NOEND, |
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man->parse, n->line, n->pos, |
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man_macronames[n->tok]); |
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} |
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if ( ! man_word_alloc(man, line, la, p)) |
/* |
return(0); |
* We might delete the man->last node |
man->next = MAN_NEXT_SIBLING; |
* in the post-validation phase. |
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* Save a pointer to the parent such that |
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* we know where to continue the iteration. |
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*/ |
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man->last = n; |
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n = n->parent; |
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man_valid_post(man); |
} |
} |
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/* |
/* |
* Note that when TH is pruned, we'll be back at the root, so |
* If we ended up at the parent of the node we were |
* make sure that we don't clobber as its sibling. |
* supposed to rewind to, that means the target node |
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* got deleted, so add the next node we parse as a child |
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* of the parent instead of as a sibling of the target. |
*/ |
*/ |
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for ( ; man->last; man->last = man->last->parent) { |
man->next = (man->last == to) ? |
if (man->last == n) |
MAN_NEXT_CHILD : MAN_NEXT_SIBLING; |
break; |
} |
if (man->last->type == MAN_ROOT) |
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break; |
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if ( ! man_valid_post(man)) |
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return(0); |
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if ( ! man_action_post(man)) |
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return(0); |
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} |
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assert(man->last); |
static enum rew |
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rew_block(enum mant ntok, enum man_type type, const struct man_node *n) |
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{ |
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if (type == MAN_BLOCK && ntok == n->parent->tok && |
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n->parent->type == MAN_BODY) |
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return(REW_REWIND); |
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return(ntok == n->tok ? REW_HALT : REW_NOHALT); |
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} |
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/* |
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* There are three scope levels: scoped to the root (all), scoped to the |
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* section (all less sections), and scoped to subsections (all less |
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* sections and subsections). |
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*/ |
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static enum rew |
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rew_dohalt(enum mant tok, enum man_type type, const struct man_node *n) |
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{ |
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enum rew c; |
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/* We cannot progress beyond the root ever. */ |
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if (MAN_ROOT == n->type) |
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return(REW_HALT); |
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assert(n->parent); |
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/* Normal nodes shouldn't go to the level of the root. */ |
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if (MAN_ROOT == n->parent->type) |
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return(REW_REWIND); |
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/* Already-validated nodes should be closed out. */ |
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if (MAN_VALID & n->flags) |
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return(REW_NOHALT); |
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/* First: rewind to ourselves. */ |
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if (type == n->type && tok == n->tok) { |
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if (MAN_EXPLICIT & man_macros[n->tok].flags) |
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return(REW_HALT); |
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else |
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return(REW_REWIND); |
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} |
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/* |
/* |
* Same here regarding whether we're back at the root. |
* Next follow the implicit scope-smashings as defined by man.7: |
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* section, sub-section, etc. |
*/ |
*/ |
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if (man->last->type != MAN_ROOT && ! man_valid_post(man)) |
switch (tok) { |
return(0); |
case MAN_SH: |
if (man->last->type != MAN_ROOT && ! man_action_post(man)) |
break; |
return(0); |
case MAN_SS: |
if (man->last->type != MAN_ROOT) |
/* Rewind to a section, if a block. */ |
man->next = MAN_NEXT_SIBLING; |
if (REW_NOHALT != (c = rew_block(MAN_SH, type, n))) |
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return(c); |
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break; |
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case MAN_RS: |
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/* Preserve empty paragraphs before RS. */ |
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if (0 == n->nchild && (MAN_P == n->tok || |
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MAN_PP == n->tok || MAN_LP == n->tok)) |
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return(REW_HALT); |
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/* Rewind to a subsection, if a block. */ |
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if (REW_NOHALT != (c = rew_block(MAN_SS, type, n))) |
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return(c); |
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/* Rewind to a section, if a block. */ |
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if (REW_NOHALT != (c = rew_block(MAN_SH, type, n))) |
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return(c); |
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break; |
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default: |
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/* Rewind to an offsetter, if a block. */ |
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if (REW_NOHALT != (c = rew_block(MAN_RS, type, n))) |
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return(c); |
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/* Rewind to a subsection, if a block. */ |
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if (REW_NOHALT != (c = rew_block(MAN_SS, type, n))) |
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return(c); |
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/* Rewind to a section, if a block. */ |
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if (REW_NOHALT != (c = rew_block(MAN_SH, type, n))) |
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return(c); |
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break; |
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} |
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return(1); |
return(REW_NOHALT); |
} |
} |
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/* |
int |
* Rewinding entails ascending the parse tree until a coherent point, |
man_macroend(struct man *m) |
* for example, the `SH' macro will close out any intervening `SS' |
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* scopes. When a scope is closed, it must be validated and actioned. |
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*/ |
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static void |
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rew_scope(enum man_type type, struct man *man, enum mant tok) |
{ |
{ |
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struct man_node *n; |
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enum rew c; |
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for ( ; m->last && m->last != m->first; |
for (n = man->last; n; n = n->parent) { |
m->last = m->last->parent) { |
/* |
if ( ! man_valid_post(m)) |
* Whether we should stop immediately (REW_HALT), stop |
return(0); |
* and rewind until this point (REW_REWIND), or keep |
if ( ! man_action_post(m)) |
* rewinding (REW_NOHALT). |
return(0); |
*/ |
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c = rew_dohalt(tok, type, n); |
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if (REW_HALT == c) |
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return; |
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if (REW_REWIND == c) |
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break; |
} |
} |
assert(m->last == m->first); |
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if ( ! man_valid_post(m)) |
/* |
return(0); |
* Rewind until the current point. Warn if we're a roff |
if ( ! man_action_post(m)) |
* instruction that's mowing over explicit scopes. |
return(0); |
*/ |
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return(1); |
man_unscope(man, n); |
} |
} |
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/* ARGSUSED */ |
/* |
static int |
* Close out a generic explicit macro. |
man_args(struct man *m, int line, |
*/ |
int *pos, char *buf, char **v) |
void |
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blk_close(MACRO_PROT_ARGS) |
{ |
{ |
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enum mant ntok; |
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const struct man_node *nn; |
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char *p; |
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int nrew, target; |
|
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if (0 == buf[*pos]) |
nrew = 1; |
return(0); |
switch (tok) { |
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case MAN_RE: |
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ntok = MAN_RS; |
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if ( ! man_args(man, line, pos, buf, &p)) |
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break; |
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for (nn = man->last->parent; nn; nn = nn->parent) |
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if (nn->tok == ntok && nn->type == MAN_BLOCK) |
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nrew++; |
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target = strtol(p, &p, 10); |
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if (*p != '\0') |
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mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse, |
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line, p - buf, "RE ... %s", p); |
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if (target == 0) |
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target = 1; |
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nrew -= target; |
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if (nrew < 1) { |
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mandoc_vmsg(MANDOCERR_RE_NOTOPEN, man->parse, |
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line, ppos, "RE %d", target); |
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return; |
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} |
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break; |
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case MAN_UE: |
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ntok = MAN_UR; |
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break; |
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default: |
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abort(); |
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/* NOTREACHED */ |
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} |
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/* First parse non-quoted strings. */ |
for (nn = man->last->parent; nn; nn = nn->parent) |
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if (nn->tok == ntok && nn->type == MAN_BLOCK && ! --nrew) |
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break; |
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if ('\"' != buf[*pos]) { |
if (nn == NULL) { |
*v = &buf[*pos]; |
mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse, |
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line, ppos, man_macronames[tok]); |
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rew_scope(MAN_BLOCK, man, MAN_PP); |
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} else |
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man_unscope(man, nn); |
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} |
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while (buf[*pos]) { |
void |
if (' ' == buf[*pos]) |
blk_exp(MACRO_PROT_ARGS) |
if ('\\' != buf[*pos - 1]) |
{ |
break; |
struct man_node *n; |
(*pos)++; |
int la; |
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char *p; |
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rew_scope(MAN_BLOCK, man, tok); |
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man_block_alloc(man, line, ppos, tok); |
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man_head_alloc(man, line, ppos, tok); |
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for (;;) { |
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la = *pos; |
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if ( ! man_args(man, line, pos, buf, &p)) |
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break; |
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man_word_alloc(man, line, la, p); |
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} |
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assert(man); |
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assert(tok != MAN_MAX); |
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for (n = man->last; n; n = n->parent) |
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if (n->tok == tok) { |
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assert(n->type == MAN_HEAD); |
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man_unscope(man, n); |
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break; |
} |
} |
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if (0 == buf[*pos]) |
man_body_alloc(man, line, ppos, tok); |
return(1); |
} |
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buf[(*pos)++] = 0; |
/* |
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* Parse an implicit-block macro. These contain a MAN_HEAD and a |
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* MAN_BODY contained within a MAN_BLOCK. Rules for closing out other |
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* scopes, such as `SH' closing out an `SS', are defined in the rew |
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* routines. |
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*/ |
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void |
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blk_imp(MACRO_PROT_ARGS) |
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{ |
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int la; |
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char *p; |
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struct man_node *n; |
|
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if (0 == buf[*pos]) |
rew_scope(MAN_BODY, man, tok); |
return(1); |
rew_scope(MAN_BLOCK, man, tok); |
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man_block_alloc(man, line, ppos, tok); |
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man_head_alloc(man, line, ppos, tok); |
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n = man->last; |
|
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while (buf[*pos] && ' ' == buf[*pos]) |
/* Add line arguments. */ |
(*pos)++; |
|
|
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if (buf[*pos]) |
for (;;) { |
return(1); |
la = *pos; |
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if ( ! man_args(man, line, pos, buf, &p)) |
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break; |
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man_word_alloc(man, line, la, p); |
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} |
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if ( ! man_vwarn(m, line, *pos, "trailing spaces")) |
/* Close out head and open body (unless MAN_SCOPE). */ |
return(-1); |
|
|
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return(1); |
if (man_macros[tok].flags & MAN_SCOPED) { |
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/* If we're forcing scope (`TP'), keep it open. */ |
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if (man_macros[tok].flags & MAN_FSCOPED) { |
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man->flags |= MAN_BLINE; |
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return; |
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} else if (n == man->last) { |
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man->flags |= MAN_BLINE; |
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return; |
|
} |
} |
} |
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rew_scope(MAN_HEAD, man, tok); |
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man_body_alloc(man, line, ppos, tok); |
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} |
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void |
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in_line_eoln(MACRO_PROT_ARGS) |
|
{ |
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int la; |
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char *p; |
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struct man_node *n; |
|
|
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man_elem_alloc(man, line, ppos, tok); |
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n = man->last; |
|
|
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for (;;) { |
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la = *pos; |
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if ( ! man_args(man, line, pos, buf, &p)) |
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break; |
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if (man_macros[tok].flags & MAN_JOIN && |
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man->last->type == MAN_TEXT) |
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man_word_append(man, p); |
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else |
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man_word_alloc(man, line, la, p); |
|
} |
|
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/* |
/* |
* If we're a quoted string (and quoted strings are allowed), |
* Append MAN_EOS in case the last snipped argument |
* then parse ahead to the next quote. If none's found, it's an |
* ends with a dot, e.g. `.IR syslog (3).' |
* error. After, parse to the next word. |
|
*/ |
*/ |
|
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*v = &buf[++(*pos)]; |
if (n != man->last && |
|
mandoc_eos(man->last->string, strlen(man->last->string))) |
|
man->last->flags |= MAN_EOS; |
|
|
while (buf[*pos] && '\"' != buf[*pos]) |
/* |
(*pos)++; |
* If no arguments are specified and this is MAN_SCOPED (i.e., |
|
* next-line scoped), then set our mode to indicate that we're |
|
* waiting for terms to load into our context. |
|
*/ |
|
|
if (0 == buf[*pos]) { |
if (n == man->last && man_macros[tok].flags & MAN_SCOPED) { |
if ( ! man_vwarn(m, line, *pos, "unterminated quote")) |
assert( ! (man_macros[tok].flags & MAN_NSCOPED)); |
return(-1); |
man->flags |= MAN_ELINE; |
return(1); |
return; |
} |
} |
|
|
buf[(*pos)++] = 0; |
assert(man->last->type != MAN_ROOT); |
if (0 == buf[*pos]) |
man->next = MAN_NEXT_SIBLING; |
return(1); |
|
|
|
while (buf[*pos] && ' ' == buf[*pos]) |
/* |
(*pos)++; |
* Rewind our element scope. Note that when TH is pruned, we'll |
|
* be back at the root, so make sure that we don't clobber as |
|
* its sibling. |
|
*/ |
|
|
if (buf[*pos]) |
for ( ; man->last; man->last = man->last->parent) { |
return(1); |
if (man->last == n) |
|
break; |
|
if (man->last->type == MAN_ROOT) |
|
break; |
|
man_valid_post(man); |
|
} |
|
|
if ( ! man_vwarn(m, line, *pos, "trailing spaces")) |
assert(man->last); |
return(-1); |
|
|
/* |
|
* Same here regarding whether we're back at the root. |
|
*/ |
|
|
|
if (man->last->type != MAN_ROOT) |
|
man_valid_post(man); |
|
} |
|
|
|
|
|
void |
|
man_macroend(struct man *man) |
|
{ |
|
|
|
man_unscope(man, man->first); |
|
} |
|
|
|
static int |
|
man_args(struct man *man, int line, int *pos, char *buf, char **v) |
|
{ |
|
char *start; |
|
|
|
assert(*pos); |
|
*v = start = buf + *pos; |
|
assert(' ' != *start); |
|
|
|
if ('\0' == *start) |
|
return(0); |
|
|
|
*v = mandoc_getarg(man->parse, v, line, pos); |
return(1); |
return(1); |
} |
} |