849684b013
Use the new unsupp warning level to detect the unsupported manpages in man(1)
3068 lines
68 KiB
C
3068 lines
68 KiB
C
/* $Id: roff.c,v 1.263 2015/02/21 14:46:58 schwarze Exp $ */
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/*
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* Copyright (c) 2010, 2011, 2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <assert.h>
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mandoc.h"
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#include "mandoc_aux.h"
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#include "libmandoc.h"
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#include "libroff.h"
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/* Maximum number of nested if-else conditionals. */
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#define RSTACK_MAX 128
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/* Maximum number of string expansions per line, to break infinite loops. */
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#define EXPAND_LIMIT 1000
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enum rofft {
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ROFF_ab,
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ROFF_ad,
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ROFF_af,
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ROFF_aln,
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ROFF_als,
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ROFF_am,
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ROFF_am1,
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ROFF_ami,
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ROFF_ami1,
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ROFF_as,
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ROFF_as1,
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ROFF_asciify,
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ROFF_backtrace,
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ROFF_bd,
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ROFF_bleedat,
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ROFF_blm,
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ROFF_box,
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ROFF_boxa,
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ROFF_bp,
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ROFF_BP,
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/* MAN_br, MDOC_br */
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ROFF_break,
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ROFF_breakchar,
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ROFF_brnl,
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ROFF_brp,
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ROFF_brpnl,
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ROFF_c2,
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ROFF_cc,
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ROFF_ce,
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ROFF_cf,
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ROFF_cflags,
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ROFF_ch,
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ROFF_char,
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ROFF_chop,
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ROFF_class,
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ROFF_close,
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ROFF_CL,
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ROFF_color,
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ROFF_composite,
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ROFF_continue,
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ROFF_cp,
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ROFF_cropat,
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ROFF_cs,
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ROFF_cu,
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ROFF_da,
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ROFF_dch,
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ROFF_Dd,
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ROFF_de,
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ROFF_de1,
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ROFF_defcolor,
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ROFF_dei,
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ROFF_dei1,
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ROFF_device,
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ROFF_devicem,
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ROFF_di,
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ROFF_do,
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ROFF_ds,
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ROFF_ds1,
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ROFF_dwh,
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ROFF_dt,
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ROFF_ec,
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ROFF_ecr,
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ROFF_ecs,
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ROFF_el,
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ROFF_em,
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ROFF_EN,
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ROFF_eo,
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ROFF_EP,
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ROFF_EQ,
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ROFF_errprint,
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ROFF_ev,
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ROFF_evc,
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ROFF_ex,
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ROFF_fallback,
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ROFF_fam,
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ROFF_fc,
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ROFF_fchar,
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ROFF_fcolor,
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ROFF_fdeferlig,
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ROFF_feature,
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/* MAN_fi; ignored in mdoc(7) */
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ROFF_fkern,
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ROFF_fl,
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ROFF_flig,
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ROFF_fp,
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ROFF_fps,
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ROFF_fschar,
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ROFF_fspacewidth,
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ROFF_fspecial,
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/* MAN_ft; ignored in mdoc(7) */
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ROFF_ftr,
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ROFF_fzoom,
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ROFF_gcolor,
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ROFF_hc,
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ROFF_hcode,
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ROFF_hidechar,
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ROFF_hla,
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ROFF_hlm,
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ROFF_hpf,
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ROFF_hpfa,
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ROFF_hpfcode,
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ROFF_hw,
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ROFF_hy,
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ROFF_hylang,
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ROFF_hylen,
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ROFF_hym,
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ROFF_hypp,
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ROFF_hys,
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ROFF_ie,
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ROFF_if,
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ROFF_ig,
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/* MAN_in; ignored in mdoc(7) */
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ROFF_index,
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ROFF_it,
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ROFF_itc,
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ROFF_IX,
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ROFF_kern,
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ROFF_kernafter,
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ROFF_kernbefore,
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ROFF_kernpair,
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ROFF_lc,
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ROFF_lc_ctype,
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ROFF_lds,
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ROFF_length,
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ROFF_letadj,
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ROFF_lf,
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ROFF_lg,
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ROFF_lhang,
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ROFF_linetabs,
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/* MAN_ll, MDOC_ll */
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ROFF_lnr,
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ROFF_lnrf,
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ROFF_lpfx,
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ROFF_ls,
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ROFF_lsm,
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ROFF_lt,
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ROFF_mc,
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ROFF_mediasize,
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ROFF_minss,
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ROFF_mk,
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ROFF_mso,
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ROFF_na,
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ROFF_ne,
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/* MAN_nf; ignored in mdoc(7) */
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ROFF_nh,
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ROFF_nhychar,
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ROFF_nm,
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ROFF_nn,
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ROFF_nop,
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ROFF_nr,
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ROFF_nrf,
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ROFF_nroff,
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ROFF_ns,
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ROFF_nx,
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ROFF_open,
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ROFF_opena,
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ROFF_os,
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ROFF_output,
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ROFF_padj,
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ROFF_papersize,
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ROFF_pc,
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ROFF_pev,
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ROFF_pi,
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ROFF_PI,
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ROFF_pl,
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ROFF_pm,
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ROFF_pn,
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ROFF_pnr,
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ROFF_po,
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ROFF_ps,
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ROFF_psbb,
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ROFF_pshape,
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ROFF_pso,
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ROFF_ptr,
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ROFF_pvs,
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ROFF_rchar,
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ROFF_rd,
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ROFF_recursionlimit,
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ROFF_return,
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ROFF_rfschar,
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ROFF_rhang,
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ROFF_rj,
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ROFF_rm,
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ROFF_rn,
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ROFF_rnn,
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ROFF_rr,
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ROFF_rs,
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ROFF_rt,
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ROFF_schar,
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ROFF_sentchar,
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ROFF_shc,
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ROFF_shift,
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ROFF_sizes,
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ROFF_so,
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/* MAN_sp, MDOC_sp */
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ROFF_spacewidth,
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ROFF_special,
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ROFF_spreadwarn,
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ROFF_ss,
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ROFF_sty,
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ROFF_substring,
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ROFF_sv,
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ROFF_sy,
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ROFF_T_,
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ROFF_ta,
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ROFF_tc,
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ROFF_TE,
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ROFF_TH,
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ROFF_ti,
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ROFF_tkf,
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ROFF_tl,
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ROFF_tm,
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ROFF_tm1,
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ROFF_tmc,
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ROFF_tr,
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ROFF_track,
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ROFF_transchar,
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ROFF_trf,
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ROFF_trimat,
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ROFF_trin,
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ROFF_trnt,
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ROFF_troff,
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ROFF_TS,
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ROFF_uf,
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ROFF_ul,
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ROFF_unformat,
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ROFF_unwatch,
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ROFF_unwatchn,
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ROFF_vpt,
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ROFF_vs,
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ROFF_warn,
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ROFF_warnscale,
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ROFF_watch,
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ROFF_watchlength,
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ROFF_watchn,
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ROFF_wh,
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ROFF_while,
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ROFF_write,
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ROFF_writec,
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ROFF_writem,
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ROFF_xflag,
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ROFF_cblock,
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ROFF_USERDEF,
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ROFF_MAX
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};
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/*
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* An incredibly-simple string buffer.
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*/
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struct roffstr {
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char *p; /* nil-terminated buffer */
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size_t sz; /* saved strlen(p) */
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};
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/*
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* A key-value roffstr pair as part of a singly-linked list.
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*/
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struct roffkv {
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struct roffstr key;
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struct roffstr val;
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struct roffkv *next; /* next in list */
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};
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/*
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* A single number register as part of a singly-linked list.
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*/
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struct roffreg {
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struct roffstr key;
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int val;
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struct roffreg *next;
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};
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struct roff {
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struct mparse *parse; /* parse point */
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const struct mchars *mchars; /* character table */
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struct roffnode *last; /* leaf of stack */
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int *rstack; /* stack of inverted `ie' values */
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struct roffreg *regtab; /* number registers */
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struct roffkv *strtab; /* user-defined strings & macros */
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struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
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struct roffstr *xtab; /* single-byte trans table (`tr') */
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const char *current_string; /* value of last called user macro */
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struct tbl_node *first_tbl; /* first table parsed */
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struct tbl_node *last_tbl; /* last table parsed */
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struct tbl_node *tbl; /* current table being parsed */
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struct eqn_node *last_eqn; /* last equation parsed */
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struct eqn_node *first_eqn; /* first equation parsed */
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struct eqn_node *eqn; /* current equation being parsed */
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int eqn_inline; /* current equation is inline */
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int options; /* parse options */
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int rstacksz; /* current size limit of rstack */
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int rstackpos; /* position in rstack */
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int format; /* current file in mdoc or man format */
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char control; /* control character */
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};
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struct roffnode {
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enum rofft tok; /* type of node */
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struct roffnode *parent; /* up one in stack */
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int line; /* parse line */
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int col; /* parse col */
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char *name; /* node name, e.g. macro name */
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char *end; /* end-rules: custom token */
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int endspan; /* end-rules: next-line or infty */
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int rule; /* current evaluation rule */
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};
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#define ROFF_ARGS struct roff *r, /* parse ctx */ \
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enum rofft tok, /* tok of macro */ \
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struct buf *buf, /* input buffer */ \
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int ln, /* parse line */ \
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int ppos, /* original pos in buffer */ \
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int pos, /* current pos in buffer */ \
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int *offs /* reset offset of buffer data */
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typedef enum rofferr (*roffproc)(ROFF_ARGS);
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struct roffmac {
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const char *name; /* macro name */
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roffproc proc; /* process new macro */
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roffproc text; /* process as child text of macro */
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roffproc sub; /* process as child of macro */
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int flags;
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#define ROFFMAC_STRUCT (1 << 0) /* always interpret */
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struct roffmac *next;
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};
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struct predef {
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const char *name; /* predefined input name */
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const char *str; /* replacement symbol */
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};
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#define PREDEF(__name, __str) \
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{ (__name), (__str) },
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static enum rofft roffhash_find(const char *, size_t);
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static void roffhash_init(void);
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static void roffnode_cleanscope(struct roff *);
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static void roffnode_pop(struct roff *);
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static void roffnode_push(struct roff *, enum rofft,
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const char *, int, int);
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static enum rofferr roff_block(ROFF_ARGS);
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static enum rofferr roff_block_text(ROFF_ARGS);
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static enum rofferr roff_block_sub(ROFF_ARGS);
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static enum rofferr roff_brp(ROFF_ARGS);
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static enum rofferr roff_cblock(ROFF_ARGS);
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static enum rofferr roff_cc(ROFF_ARGS);
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static void roff_ccond(struct roff *, int, int);
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static enum rofferr roff_cond(ROFF_ARGS);
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static enum rofferr roff_cond_text(ROFF_ARGS);
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static enum rofferr roff_cond_sub(ROFF_ARGS);
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static enum rofferr roff_ds(ROFF_ARGS);
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static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
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static int roff_evalcond(struct roff *r, int,
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const char *, int *);
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static int roff_evalnum(struct roff *, int,
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const char *, int *, int *, int);
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static int roff_evalpar(struct roff *, int,
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const char *, int *, int *, int);
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static int roff_evalstrcond(const char *, int *);
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static void roff_free1(struct roff *);
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static void roff_freereg(struct roffreg *);
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static void roff_freestr(struct roffkv *);
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static size_t roff_getname(struct roff *, char **, int, int);
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static int roff_getnum(const char *, int *, int *, int);
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static int roff_getop(const char *, int *, char *);
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static int roff_getregn(const struct roff *,
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const char *, size_t);
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static int roff_getregro(const char *name);
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static const char *roff_getstrn(const struct roff *,
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const char *, size_t);
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static enum rofferr roff_insec(ROFF_ARGS);
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static enum rofferr roff_it(ROFF_ARGS);
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static enum rofferr roff_line_ignore(ROFF_ARGS);
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static enum rofferr roff_nr(ROFF_ARGS);
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static enum rofft roff_parse(struct roff *, char *, int *,
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int, int);
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static enum rofferr roff_parsetext(struct buf *, int, int *);
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static enum rofferr roff_res(struct roff *, struct buf *, int, int);
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static enum rofferr roff_rm(ROFF_ARGS);
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static enum rofferr roff_rr(ROFF_ARGS);
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static void roff_setstr(struct roff *,
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const char *, const char *, int);
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static void roff_setstrn(struct roffkv **, const char *,
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size_t, const char *, size_t, int);
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static enum rofferr roff_so(ROFF_ARGS);
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static enum rofferr roff_tr(ROFF_ARGS);
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static enum rofferr roff_Dd(ROFF_ARGS);
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static enum rofferr roff_TH(ROFF_ARGS);
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static enum rofferr roff_TE(ROFF_ARGS);
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static enum rofferr roff_TS(ROFF_ARGS);
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static enum rofferr roff_EQ(ROFF_ARGS);
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static enum rofferr roff_EN(ROFF_ARGS);
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static enum rofferr roff_T_(ROFF_ARGS);
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static enum rofferr roff_unsupp(ROFF_ARGS);
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static enum rofferr roff_userdef(ROFF_ARGS);
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/* See roffhash_find() */
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#define ASCII_HI 126
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#define ASCII_LO 33
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#define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
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#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
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#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
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static struct roffmac *hash[HASHWIDTH];
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static struct roffmac roffs[ROFF_MAX] = {
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{ "ab", roff_unsupp, NULL, NULL, 0, NULL },
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{ "ad", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "af", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "aln", roff_unsupp, NULL, NULL, 0, NULL },
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{ "als", roff_unsupp, NULL, NULL, 0, NULL },
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{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
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{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
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{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
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{ "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
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{ "as", roff_ds, NULL, NULL, 0, NULL },
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{ "as1", roff_ds, NULL, NULL, 0, NULL },
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{ "asciify", roff_unsupp, NULL, NULL, 0, NULL },
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{ "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "bd", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "blm", roff_unsupp, NULL, NULL, 0, NULL },
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{ "box", roff_unsupp, NULL, NULL, 0, NULL },
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{ "boxa", roff_unsupp, NULL, NULL, 0, NULL },
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{ "bp", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "BP", roff_unsupp, NULL, NULL, 0, NULL },
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{ "break", roff_unsupp, NULL, NULL, 0, NULL },
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{ "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "brp", roff_brp, NULL, NULL, 0, NULL },
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{ "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "c2", roff_unsupp, NULL, NULL, 0, NULL },
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{ "cc", roff_cc, NULL, NULL, 0, NULL },
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{ "ce", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "cf", roff_insec, NULL, NULL, 0, NULL },
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{ "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "ch", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "char", roff_unsupp, NULL, NULL, 0, NULL },
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{ "chop", roff_unsupp, NULL, NULL, 0, NULL },
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{ "class", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "close", roff_insec, NULL, NULL, 0, NULL },
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{ "CL", roff_unsupp, NULL, NULL, 0, NULL },
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{ "color", roff_line_ignore, NULL, NULL, 0, NULL },
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{ "composite", roff_unsupp, NULL, NULL, 0, NULL },
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{ "continue", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "cp", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "cs", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "cu", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "da", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "dch", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "Dd", roff_Dd, NULL, NULL, 0, NULL },
|
|
{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
|
|
{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
|
|
{ "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
|
|
{ "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
|
|
{ "device", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "devicem", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "di", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "do", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ds", roff_ds, NULL, NULL, 0, NULL },
|
|
{ "ds1", roff_ds, NULL, NULL, 0, NULL },
|
|
{ "dwh", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "dt", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ec", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ecr", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ecs", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
|
|
{ "em", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "EN", roff_EN, NULL, NULL, 0, NULL },
|
|
{ "eo", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "EP", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "EQ", roff_EQ, NULL, NULL, 0, NULL },
|
|
{ "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ev", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "evc", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ex", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fam", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fc", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "fchar", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "feature", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fl", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "flig", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fp", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fps", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fschar", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hc", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hla", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hw", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hy", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hym", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "hys", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
|
|
{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
|
|
{ "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
|
|
{ "index", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "it", roff_it, NULL, NULL, 0, NULL },
|
|
{ "itc", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "IX", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "kern", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "lc", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lds", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "length", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "lf", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "lg", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lnr", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "ls", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "lsm", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "lt", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "mc", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "minss", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "mk", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "mso", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "na", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "nm", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "nn", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "nop", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "nr", roff_nr, NULL, NULL, 0, NULL },
|
|
{ "nrf", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ns", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "nx", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "open", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "opena", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "os", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "output", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "padj", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pc", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pev", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pi", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "PI", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "pl", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pm", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pn", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "po", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "psbb", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "pshape", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "pso", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "rchar", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "rd", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "return", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "rj", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "rm", roff_rm, NULL, NULL, 0, NULL },
|
|
{ "rn", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "rnn", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "rr", roff_rr, NULL, NULL, 0, NULL },
|
|
{ "rs", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "rt", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "schar", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "shc", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "shift", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "so", roff_so, NULL, NULL, 0, NULL },
|
|
{ "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "special", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ss", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "sty", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "substring", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "sv", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "sy", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "T&", roff_T_, NULL, NULL, 0, NULL },
|
|
{ "ta", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "tc", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "TE", roff_TE, NULL, NULL, 0, NULL },
|
|
{ "TH", roff_TH, NULL, NULL, 0, NULL },
|
|
{ "ti", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "tl", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "tm", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "tr", roff_tr, NULL, NULL, 0, NULL },
|
|
{ "track", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "trf", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "trin", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "trnt", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "troff", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "TS", roff_TS, NULL, NULL, 0, NULL },
|
|
{ "uf", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "ul", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "unformat", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "vs", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "warn", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "watch", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ "wh", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "while", roff_unsupp, NULL, NULL, 0, NULL },
|
|
{ "write", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "writec", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "writem", roff_insec, NULL, NULL, 0, NULL },
|
|
{ "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
|
|
{ ".", roff_cblock, NULL, NULL, 0, NULL },
|
|
{ NULL, roff_userdef, NULL, NULL, 0, NULL },
|
|
};
|
|
|
|
/* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
|
|
const char *const __mdoc_reserved[] = {
|
|
"Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
|
|
"Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
|
|
"Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
|
|
"Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
|
|
"Dt", "Dv", "Dx", "D1",
|
|
"Ec", "Ed", "Ef", "Ek", "El", "Em",
|
|
"En", "Eo", "Er", "Es", "Ev", "Ex",
|
|
"Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
|
|
"Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
|
|
"Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
|
|
"Oc", "Oo", "Op", "Os", "Ot", "Ox",
|
|
"Pa", "Pc", "Pf", "Po", "Pp", "Pq",
|
|
"Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
|
|
"Sc", "Sh", "Sm", "So", "Sq",
|
|
"Ss", "St", "Sx", "Sy",
|
|
"Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
|
|
"%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
|
|
"%P", "%Q", "%R", "%T", "%U", "%V",
|
|
NULL
|
|
};
|
|
|
|
/* not currently implemented: BT DE DS ME MT PT SY TQ YS */
|
|
const char *const __man_reserved[] = {
|
|
"AT", "B", "BI", "BR", "DT",
|
|
"EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
|
|
"LP", "OP", "P", "PD", "PP",
|
|
"R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
|
|
"TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
|
|
NULL
|
|
};
|
|
|
|
/* Array of injected predefined strings. */
|
|
#define PREDEFS_MAX 38
|
|
static const struct predef predefs[PREDEFS_MAX] = {
|
|
#include "predefs.in"
|
|
};
|
|
|
|
/* See roffhash_find() */
|
|
#define ROFF_HASH(p) (p[0] - ASCII_LO)
|
|
|
|
static int roffit_lines; /* number of lines to delay */
|
|
static char *roffit_macro; /* nil-terminated macro line */
|
|
|
|
|
|
static void
|
|
roffhash_init(void)
|
|
{
|
|
struct roffmac *n;
|
|
int buc, i;
|
|
|
|
for (i = 0; i < (int)ROFF_USERDEF; i++) {
|
|
assert(roffs[i].name[0] >= ASCII_LO);
|
|
assert(roffs[i].name[0] <= ASCII_HI);
|
|
|
|
buc = ROFF_HASH(roffs[i].name);
|
|
|
|
if (NULL != (n = hash[buc])) {
|
|
for ( ; n->next; n = n->next)
|
|
/* Do nothing. */ ;
|
|
n->next = &roffs[i];
|
|
} else
|
|
hash[buc] = &roffs[i];
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Look up a roff token by its name. Returns ROFF_MAX if no macro by
|
|
* the nil-terminated string name could be found.
|
|
*/
|
|
static enum rofft
|
|
roffhash_find(const char *p, size_t s)
|
|
{
|
|
int buc;
|
|
struct roffmac *n;
|
|
|
|
/*
|
|
* libroff has an extremely simple hashtable, for the time
|
|
* being, which simply keys on the first character, which must
|
|
* be printable, then walks a chain. It works well enough until
|
|
* optimised.
|
|
*/
|
|
|
|
if (p[0] < ASCII_LO || p[0] > ASCII_HI)
|
|
return(ROFF_MAX);
|
|
|
|
buc = ROFF_HASH(p);
|
|
|
|
if (NULL == (n = hash[buc]))
|
|
return(ROFF_MAX);
|
|
for ( ; n; n = n->next)
|
|
if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
|
|
return((enum rofft)(n - roffs));
|
|
|
|
return(ROFF_MAX);
|
|
}
|
|
|
|
/*
|
|
* Pop the current node off of the stack of roff instructions currently
|
|
* pending.
|
|
*/
|
|
static void
|
|
roffnode_pop(struct roff *r)
|
|
{
|
|
struct roffnode *p;
|
|
|
|
assert(r->last);
|
|
p = r->last;
|
|
|
|
r->last = r->last->parent;
|
|
free(p->name);
|
|
free(p->end);
|
|
free(p);
|
|
}
|
|
|
|
/*
|
|
* Push a roff node onto the instruction stack. This must later be
|
|
* removed with roffnode_pop().
|
|
*/
|
|
static void
|
|
roffnode_push(struct roff *r, enum rofft tok, const char *name,
|
|
int line, int col)
|
|
{
|
|
struct roffnode *p;
|
|
|
|
p = mandoc_calloc(1, sizeof(struct roffnode));
|
|
p->tok = tok;
|
|
if (name)
|
|
p->name = mandoc_strdup(name);
|
|
p->parent = r->last;
|
|
p->line = line;
|
|
p->col = col;
|
|
p->rule = p->parent ? p->parent->rule : 0;
|
|
|
|
r->last = p;
|
|
}
|
|
|
|
static void
|
|
roff_free1(struct roff *r)
|
|
{
|
|
struct tbl_node *tbl;
|
|
struct eqn_node *e;
|
|
int i;
|
|
|
|
while (NULL != (tbl = r->first_tbl)) {
|
|
r->first_tbl = tbl->next;
|
|
tbl_free(tbl);
|
|
}
|
|
r->first_tbl = r->last_tbl = r->tbl = NULL;
|
|
|
|
while (NULL != (e = r->first_eqn)) {
|
|
r->first_eqn = e->next;
|
|
eqn_free(e);
|
|
}
|
|
r->first_eqn = r->last_eqn = r->eqn = NULL;
|
|
|
|
while (r->last)
|
|
roffnode_pop(r);
|
|
|
|
free (r->rstack);
|
|
r->rstack = NULL;
|
|
r->rstacksz = 0;
|
|
r->rstackpos = -1;
|
|
|
|
roff_freereg(r->regtab);
|
|
r->regtab = NULL;
|
|
|
|
roff_freestr(r->strtab);
|
|
roff_freestr(r->xmbtab);
|
|
r->strtab = r->xmbtab = NULL;
|
|
|
|
if (r->xtab)
|
|
for (i = 0; i < 128; i++)
|
|
free(r->xtab[i].p);
|
|
free(r->xtab);
|
|
r->xtab = NULL;
|
|
}
|
|
|
|
void
|
|
roff_reset(struct roff *r)
|
|
{
|
|
|
|
roff_free1(r);
|
|
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->control = 0;
|
|
}
|
|
|
|
void
|
|
roff_free(struct roff *r)
|
|
{
|
|
|
|
roff_free1(r);
|
|
free(r);
|
|
}
|
|
|
|
struct roff *
|
|
roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
|
|
{
|
|
struct roff *r;
|
|
|
|
r = mandoc_calloc(1, sizeof(struct roff));
|
|
r->parse = parse;
|
|
r->mchars = mchars;
|
|
r->options = options;
|
|
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->rstackpos = -1;
|
|
|
|
roffhash_init();
|
|
|
|
return(r);
|
|
}
|
|
|
|
/*
|
|
* In the current line, expand escape sequences that tend to get
|
|
* used in numerical expressions and conditional requests.
|
|
* Also check the syntax of the remaining escape sequences.
|
|
*/
|
|
static enum rofferr
|
|
roff_res(struct roff *r, struct buf *buf, int ln, int pos)
|
|
{
|
|
char ubuf[24]; /* buffer to print the number */
|
|
const char *start; /* start of the string to process */
|
|
char *stesc; /* start of an escape sequence ('\\') */
|
|
const char *stnam; /* start of the name, after "[(*" */
|
|
const char *cp; /* end of the name, e.g. before ']' */
|
|
const char *res; /* the string to be substituted */
|
|
char *nbuf; /* new buffer to copy buf->buf to */
|
|
size_t maxl; /* expected length of the escape name */
|
|
size_t naml; /* actual length of the escape name */
|
|
enum mandoc_esc esc; /* type of the escape sequence */
|
|
int inaml; /* length returned from mandoc_escape() */
|
|
int expand_count; /* to avoid infinite loops */
|
|
int npos; /* position in numeric expression */
|
|
int arg_complete; /* argument not interrupted by eol */
|
|
char term; /* character terminating the escape */
|
|
|
|
expand_count = 0;
|
|
start = buf->buf + pos;
|
|
stesc = strchr(start, '\0') - 1;
|
|
while (stesc-- > start) {
|
|
|
|
/* Search backwards for the next backslash. */
|
|
|
|
if (*stesc != '\\')
|
|
continue;
|
|
|
|
/* If it is escaped, skip it. */
|
|
|
|
for (cp = stesc - 1; cp >= start; cp--)
|
|
if (*cp != '\\')
|
|
break;
|
|
|
|
if ((stesc - cp) % 2 == 0) {
|
|
stesc = (char *)cp;
|
|
continue;
|
|
}
|
|
|
|
/* Decide whether to expand or to check only. */
|
|
|
|
term = '\0';
|
|
cp = stesc + 1;
|
|
switch (*cp) {
|
|
case '*':
|
|
res = NULL;
|
|
break;
|
|
case 'B':
|
|
/* FALLTHROUGH */
|
|
case 'w':
|
|
term = cp[1];
|
|
/* FALLTHROUGH */
|
|
case 'n':
|
|
res = ubuf;
|
|
break;
|
|
default:
|
|
esc = mandoc_escape(&cp, &stnam, &inaml);
|
|
if (esc == ESCAPE_ERROR ||
|
|
(esc == ESCAPE_SPECIAL &&
|
|
mchars_spec2cp(r->mchars, stnam, inaml) < 0))
|
|
mandoc_vmsg(MANDOCERR_ESC_BAD,
|
|
r->parse, ln, (int)(stesc - buf->buf),
|
|
"%.*s", (int)(cp - stesc), stesc);
|
|
continue;
|
|
}
|
|
|
|
if (EXPAND_LIMIT < ++expand_count) {
|
|
mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
|
|
ln, (int)(stesc - buf->buf), NULL);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
/*
|
|
* The third character decides the length
|
|
* of the name of the string or register.
|
|
* Save a pointer to the name.
|
|
*/
|
|
|
|
if (term == '\0') {
|
|
switch (*++cp) {
|
|
case '\0':
|
|
maxl = 0;
|
|
break;
|
|
case '(':
|
|
cp++;
|
|
maxl = 2;
|
|
break;
|
|
case '[':
|
|
cp++;
|
|
term = ']';
|
|
maxl = 0;
|
|
break;
|
|
default:
|
|
maxl = 1;
|
|
break;
|
|
}
|
|
} else {
|
|
cp += 2;
|
|
maxl = 0;
|
|
}
|
|
stnam = cp;
|
|
|
|
/* Advance to the end of the name. */
|
|
|
|
naml = 0;
|
|
arg_complete = 1;
|
|
while (maxl == 0 || naml < maxl) {
|
|
if (*cp == '\0') {
|
|
mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
|
|
ln, (int)(stesc - buf->buf), stesc);
|
|
arg_complete = 0;
|
|
break;
|
|
}
|
|
if (maxl == 0 && *cp == term) {
|
|
cp++;
|
|
break;
|
|
}
|
|
if (*cp++ != '\\' || stesc[1] != 'w') {
|
|
naml++;
|
|
continue;
|
|
}
|
|
switch (mandoc_escape(&cp, NULL, NULL)) {
|
|
case ESCAPE_SPECIAL:
|
|
/* FALLTHROUGH */
|
|
case ESCAPE_UNICODE:
|
|
/* FALLTHROUGH */
|
|
case ESCAPE_NUMBERED:
|
|
/* FALLTHROUGH */
|
|
case ESCAPE_OVERSTRIKE:
|
|
naml++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Retrieve the replacement string; if it is
|
|
* undefined, resume searching for escapes.
|
|
*/
|
|
|
|
switch (stesc[1]) {
|
|
case '*':
|
|
if (arg_complete)
|
|
res = roff_getstrn(r, stnam, naml);
|
|
break;
|
|
case 'B':
|
|
npos = 0;
|
|
ubuf[0] = arg_complete &&
|
|
roff_evalnum(r, ln, stnam, &npos,
|
|
NULL, ROFFNUM_SCALE) &&
|
|
stnam + npos + 1 == cp ? '1' : '0';
|
|
ubuf[1] = '\0';
|
|
break;
|
|
case 'n':
|
|
if (arg_complete)
|
|
(void)snprintf(ubuf, sizeof(ubuf), "%d",
|
|
roff_getregn(r, stnam, naml));
|
|
else
|
|
ubuf[0] = '\0';
|
|
break;
|
|
case 'w':
|
|
/* use even incomplete args */
|
|
(void)snprintf(ubuf, sizeof(ubuf), "%d",
|
|
24 * (int)naml);
|
|
break;
|
|
}
|
|
|
|
if (res == NULL) {
|
|
mandoc_vmsg(MANDOCERR_STR_UNDEF,
|
|
r->parse, ln, (int)(stesc - buf->buf),
|
|
"%.*s", (int)naml, stnam);
|
|
res = "";
|
|
} else if (buf->sz + strlen(res) > SHRT_MAX) {
|
|
mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
|
|
ln, (int)(stesc - buf->buf), NULL);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
/* Replace the escape sequence by the string. */
|
|
|
|
*stesc = '\0';
|
|
buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
|
|
buf->buf, res, cp) + 1;
|
|
|
|
/* Prepare for the next replacement. */
|
|
|
|
start = nbuf + pos;
|
|
stesc = nbuf + (stesc - buf->buf) + strlen(res);
|
|
free(buf->buf);
|
|
buf->buf = nbuf;
|
|
}
|
|
return(ROFF_CONT);
|
|
}
|
|
|
|
/*
|
|
* Process text streams:
|
|
* Convert all breakable hyphens into ASCII_HYPH.
|
|
* Decrement and spring input line trap.
|
|
*/
|
|
static enum rofferr
|
|
roff_parsetext(struct buf *buf, int pos, int *offs)
|
|
{
|
|
size_t sz;
|
|
const char *start;
|
|
char *p;
|
|
int isz;
|
|
enum mandoc_esc esc;
|
|
|
|
start = p = buf->buf + pos;
|
|
|
|
while (*p != '\0') {
|
|
sz = strcspn(p, "-\\");
|
|
p += sz;
|
|
|
|
if (*p == '\0')
|
|
break;
|
|
|
|
if (*p == '\\') {
|
|
/* Skip over escapes. */
|
|
p++;
|
|
esc = mandoc_escape((const char **)&p, NULL, NULL);
|
|
if (esc == ESCAPE_ERROR)
|
|
break;
|
|
continue;
|
|
} else if (p == start) {
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
if (isalpha((unsigned char)p[-1]) &&
|
|
isalpha((unsigned char)p[1]))
|
|
*p = ASCII_HYPH;
|
|
p++;
|
|
}
|
|
|
|
/* Spring the input line trap. */
|
|
if (roffit_lines == 1) {
|
|
isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
|
|
free(buf->buf);
|
|
buf->buf = p;
|
|
buf->sz = isz + 1;
|
|
*offs = 0;
|
|
free(roffit_macro);
|
|
roffit_lines = 0;
|
|
return(ROFF_REPARSE);
|
|
} else if (roffit_lines > 1)
|
|
--roffit_lines;
|
|
return(ROFF_CONT);
|
|
}
|
|
|
|
enum rofferr
|
|
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
|
|
{
|
|
enum rofft t;
|
|
enum rofferr e;
|
|
int pos; /* parse point */
|
|
int spos; /* saved parse point for messages */
|
|
int ppos; /* original offset in buf->buf */
|
|
int ctl; /* macro line (boolean) */
|
|
|
|
ppos = pos = *offs;
|
|
|
|
/* Handle in-line equation delimiters. */
|
|
|
|
if (r->tbl == NULL &&
|
|
r->last_eqn != NULL && r->last_eqn->delim &&
|
|
(r->eqn == NULL || r->eqn_inline)) {
|
|
e = roff_eqndelim(r, buf, pos);
|
|
if (e == ROFF_REPARSE)
|
|
return(e);
|
|
assert(e == ROFF_CONT);
|
|
}
|
|
|
|
/* Expand some escape sequences. */
|
|
|
|
e = roff_res(r, buf, ln, pos);
|
|
if (e == ROFF_IGN)
|
|
return(e);
|
|
assert(e == ROFF_CONT);
|
|
|
|
ctl = roff_getcontrol(r, buf->buf, &pos);
|
|
|
|
/*
|
|
* First, if a scope is open and we're not a macro, pass the
|
|
* text through the macro's filter.
|
|
* Equations process all content themselves.
|
|
* Tables process almost all content themselves, but we want
|
|
* to warn about macros before passing it there.
|
|
*/
|
|
|
|
if (r->last != NULL && ! ctl) {
|
|
t = r->last->tok;
|
|
assert(roffs[t].text);
|
|
e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
|
|
assert(e == ROFF_IGN || e == ROFF_CONT);
|
|
if (e != ROFF_CONT)
|
|
return(e);
|
|
}
|
|
if (r->eqn != NULL)
|
|
return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
|
|
if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
|
|
return(tbl_read(r->tbl, ln, buf->buf, ppos));
|
|
if ( ! ctl)
|
|
return(roff_parsetext(buf, pos, offs));
|
|
|
|
/* Skip empty request lines. */
|
|
|
|
if (buf->buf[pos] == '"') {
|
|
mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
|
|
ln, pos, NULL);
|
|
return(ROFF_IGN);
|
|
} else if (buf->buf[pos] == '\0')
|
|
return(ROFF_IGN);
|
|
|
|
/*
|
|
* If a scope is open, go to the child handler for that macro,
|
|
* as it may want to preprocess before doing anything with it.
|
|
* Don't do so if an equation is open.
|
|
*/
|
|
|
|
if (r->last) {
|
|
t = r->last->tok;
|
|
assert(roffs[t].sub);
|
|
return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
|
|
}
|
|
|
|
/* No scope is open. This is a new request or macro. */
|
|
|
|
spos = pos;
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
/* Tables ignore most macros. */
|
|
|
|
if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
|
|
mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
|
|
ln, pos, buf->buf + spos);
|
|
if (t == ROFF_TS)
|
|
return(ROFF_IGN);
|
|
while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
|
|
pos++;
|
|
while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
|
|
pos++;
|
|
return(tbl_read(r->tbl, ln, buf->buf, pos));
|
|
}
|
|
|
|
/*
|
|
* This is neither a roff request nor a user-defined macro.
|
|
* Let the standard macro set parsers handle it.
|
|
*/
|
|
|
|
if (t == ROFF_MAX)
|
|
return(ROFF_CONT);
|
|
|
|
/* Execute a roff request or a user defined macro. */
|
|
|
|
assert(roffs[t].proc);
|
|
return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
|
|
}
|
|
|
|
void
|
|
roff_endparse(struct roff *r)
|
|
{
|
|
|
|
if (r->last)
|
|
mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
|
|
r->last->line, r->last->col,
|
|
roffs[r->last->tok].name);
|
|
|
|
if (r->eqn) {
|
|
mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
|
|
r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
|
|
eqn_end(&r->eqn);
|
|
}
|
|
|
|
if (r->tbl) {
|
|
mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
|
|
r->tbl->line, r->tbl->pos, "TS");
|
|
tbl_end(&r->tbl);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Parse a roff node's type from the input buffer. This must be in the
|
|
* form of ".foo xxx" in the usual way.
|
|
*/
|
|
static enum rofft
|
|
roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
|
|
{
|
|
char *cp;
|
|
const char *mac;
|
|
size_t maclen;
|
|
enum rofft t;
|
|
|
|
cp = buf + *pos;
|
|
|
|
if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
|
|
return(ROFF_MAX);
|
|
|
|
mac = cp;
|
|
maclen = roff_getname(r, &cp, ln, ppos);
|
|
|
|
t = (r->current_string = roff_getstrn(r, mac, maclen))
|
|
? ROFF_USERDEF : roffhash_find(mac, maclen);
|
|
|
|
if (ROFF_MAX != t)
|
|
*pos = cp - buf;
|
|
|
|
return(t);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_cblock(ROFF_ARGS)
|
|
{
|
|
|
|
/*
|
|
* A block-close `..' should only be invoked as a child of an
|
|
* ignore macro, otherwise raise a warning and just ignore it.
|
|
*/
|
|
|
|
if (r->last == NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "..");
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_am:
|
|
/* ROFF_am1 is remapped to ROFF_am in roff_block(). */
|
|
/* FALLTHROUGH */
|
|
case ROFF_ami:
|
|
/* FALLTHROUGH */
|
|
case ROFF_de:
|
|
/* ROFF_de1 is remapped to ROFF_de in roff_block(). */
|
|
/* FALLTHROUGH */
|
|
case ROFF_dei:
|
|
/* FALLTHROUGH */
|
|
case ROFF_ig:
|
|
break;
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "..");
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
|
|
".. %s", buf->buf + pos);
|
|
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
return(ROFF_IGN);
|
|
|
|
}
|
|
|
|
static void
|
|
roffnode_cleanscope(struct roff *r)
|
|
{
|
|
|
|
while (r->last) {
|
|
if (--r->last->endspan != 0)
|
|
break;
|
|
roffnode_pop(r);
|
|
}
|
|
}
|
|
|
|
static void
|
|
roff_ccond(struct roff *r, int ln, int ppos)
|
|
{
|
|
|
|
if (NULL == r->last) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "\\}");
|
|
return;
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_el:
|
|
/* FALLTHROUGH */
|
|
case ROFF_ie:
|
|
/* FALLTHROUGH */
|
|
case ROFF_if:
|
|
break;
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "\\}");
|
|
return;
|
|
}
|
|
|
|
if (r->last->endspan > -1) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "\\}");
|
|
return;
|
|
}
|
|
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
return;
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_block(ROFF_ARGS)
|
|
{
|
|
const char *name;
|
|
char *iname, *cp;
|
|
size_t namesz;
|
|
|
|
/* Ignore groff compatibility mode for now. */
|
|
|
|
if (tok == ROFF_de1)
|
|
tok = ROFF_de;
|
|
else if (tok == ROFF_dei1)
|
|
tok = ROFF_dei;
|
|
else if (tok == ROFF_am1)
|
|
tok = ROFF_am;
|
|
else if (tok == ROFF_ami1)
|
|
tok = ROFF_ami;
|
|
|
|
/* Parse the macro name argument. */
|
|
|
|
cp = buf->buf + pos;
|
|
if (tok == ROFF_ig) {
|
|
iname = NULL;
|
|
namesz = 0;
|
|
} else {
|
|
iname = cp;
|
|
namesz = roff_getname(r, &cp, ln, ppos);
|
|
iname[namesz] = '\0';
|
|
}
|
|
|
|
/* Resolve the macro name argument if it is indirect. */
|
|
|
|
if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
|
|
if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
|
|
mandoc_vmsg(MANDOCERR_STR_UNDEF,
|
|
r->parse, ln, (int)(iname - buf->buf),
|
|
"%.*s", (int)namesz, iname);
|
|
namesz = 0;
|
|
} else
|
|
namesz = strlen(name);
|
|
} else
|
|
name = iname;
|
|
|
|
if (namesz == 0 && tok != ROFF_ig) {
|
|
mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
|
|
ln, ppos, roffs[tok].name);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
roffnode_push(r, tok, name, ln, ppos);
|
|
|
|
/*
|
|
* At the beginning of a `de' macro, clear the existing string
|
|
* with the same name, if there is one. New content will be
|
|
* appended from roff_block_text() in multiline mode.
|
|
*/
|
|
|
|
if (tok == ROFF_de || tok == ROFF_dei)
|
|
roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
|
|
|
|
if (*cp == '\0')
|
|
return(ROFF_IGN);
|
|
|
|
/* Get the custom end marker. */
|
|
|
|
iname = cp;
|
|
namesz = roff_getname(r, &cp, ln, ppos);
|
|
|
|
/* Resolve the end marker if it is indirect. */
|
|
|
|
if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
|
|
if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
|
|
mandoc_vmsg(MANDOCERR_STR_UNDEF,
|
|
r->parse, ln, (int)(iname - buf->buf),
|
|
"%.*s", (int)namesz, iname);
|
|
namesz = 0;
|
|
} else
|
|
namesz = strlen(name);
|
|
} else
|
|
name = iname;
|
|
|
|
if (namesz)
|
|
r->last->end = mandoc_strndup(name, namesz);
|
|
|
|
if (*cp != '\0')
|
|
mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
|
|
ln, pos, ".%s ... %s", roffs[tok].name, cp);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_block_sub(ROFF_ARGS)
|
|
{
|
|
enum rofft t;
|
|
int i, j;
|
|
|
|
/*
|
|
* First check whether a custom macro exists at this level. If
|
|
* it does, then check against it. This is some of groff's
|
|
* stranger behaviours. If we encountered a custom end-scope
|
|
* tag and that tag also happens to be a "real" macro, then we
|
|
* need to try interpreting it again as a real macro. If it's
|
|
* not, then return ignore. Else continue.
|
|
*/
|
|
|
|
if (r->last->end) {
|
|
for (i = pos, j = 0; r->last->end[j]; j++, i++)
|
|
if (buf->buf[i] != r->last->end[j])
|
|
break;
|
|
|
|
if (r->last->end[j] == '\0' &&
|
|
(buf->buf[i] == '\0' ||
|
|
buf->buf[i] == ' ' ||
|
|
buf->buf[i] == '\t')) {
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
|
|
while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
|
|
i++;
|
|
|
|
pos = i;
|
|
if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
|
|
ROFF_MAX)
|
|
return(ROFF_RERUN);
|
|
return(ROFF_IGN);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we have no custom end-query or lookup failed, then try
|
|
* pulling it out of the hashtable.
|
|
*/
|
|
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
if (t != ROFF_cblock) {
|
|
if (tok != ROFF_ig)
|
|
roff_setstr(r, r->last->name, buf->buf + ppos, 2);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
assert(roffs[t].proc);
|
|
return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_block_text(ROFF_ARGS)
|
|
{
|
|
|
|
if (tok != ROFF_ig)
|
|
roff_setstr(r, r->last->name, buf->buf + pos, 2);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_cond_sub(ROFF_ARGS)
|
|
{
|
|
enum rofft t;
|
|
char *ep;
|
|
int rr;
|
|
|
|
rr = r->last->rule;
|
|
roffnode_cleanscope(r);
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
/*
|
|
* Fully handle known macros when they are structurally
|
|
* required or when the conditional evaluated to true.
|
|
*/
|
|
|
|
if ((t != ROFF_MAX) &&
|
|
(rr || roffs[t].flags & ROFFMAC_STRUCT)) {
|
|
assert(roffs[t].proc);
|
|
return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
|
|
}
|
|
|
|
/*
|
|
* If `\}' occurs on a macro line without a preceding macro,
|
|
* drop the line completely.
|
|
*/
|
|
|
|
ep = buf->buf + pos;
|
|
if (ep[0] == '\\' && ep[1] == '}')
|
|
rr = 0;
|
|
|
|
/* Always check for the closing delimiter `\}'. */
|
|
|
|
while ((ep = strchr(ep, '\\')) != NULL) {
|
|
if (*(++ep) == '}') {
|
|
*ep = '&';
|
|
roff_ccond(r, ln, ep - buf->buf - 1);
|
|
}
|
|
if (*ep != '\0')
|
|
++ep;
|
|
}
|
|
return(rr ? ROFF_CONT : ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_cond_text(ROFF_ARGS)
|
|
{
|
|
char *ep;
|
|
int rr;
|
|
|
|
rr = r->last->rule;
|
|
roffnode_cleanscope(r);
|
|
|
|
ep = buf->buf + pos;
|
|
while ((ep = strchr(ep, '\\')) != NULL) {
|
|
if (*(++ep) == '}') {
|
|
*ep = '&';
|
|
roff_ccond(r, ln, ep - buf->buf - 1);
|
|
}
|
|
if (*ep != '\0')
|
|
++ep;
|
|
}
|
|
return(rr ? ROFF_CONT : ROFF_IGN);
|
|
}
|
|
|
|
/*
|
|
* Parse a single signed integer number. Stop at the first non-digit.
|
|
* If there is at least one digit, return success and advance the
|
|
* parse point, else return failure and let the parse point unchanged.
|
|
* Ignore overflows, treat them just like the C language.
|
|
*/
|
|
static int
|
|
roff_getnum(const char *v, int *pos, int *res, int flags)
|
|
{
|
|
int myres, scaled, n, p;
|
|
|
|
if (NULL == res)
|
|
res = &myres;
|
|
|
|
p = *pos;
|
|
n = v[p] == '-';
|
|
if (n || v[p] == '+')
|
|
p++;
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[p]))
|
|
p++;
|
|
|
|
for (*res = 0; isdigit((unsigned char)v[p]); p++)
|
|
*res = 10 * *res + v[p] - '0';
|
|
if (p == *pos + n)
|
|
return 0;
|
|
|
|
if (n)
|
|
*res = -*res;
|
|
|
|
/* Each number may be followed by one optional scaling unit. */
|
|
|
|
switch (v[p]) {
|
|
case 'f':
|
|
scaled = *res * 65536;
|
|
break;
|
|
case 'i':
|
|
scaled = *res * 240;
|
|
break;
|
|
case 'c':
|
|
scaled = *res * 240 / 2.54;
|
|
break;
|
|
case 'v':
|
|
/* FALLTROUGH */
|
|
case 'P':
|
|
scaled = *res * 40;
|
|
break;
|
|
case 'm':
|
|
/* FALLTROUGH */
|
|
case 'n':
|
|
scaled = *res * 24;
|
|
break;
|
|
case 'p':
|
|
scaled = *res * 10 / 3;
|
|
break;
|
|
case 'u':
|
|
scaled = *res;
|
|
break;
|
|
case 'M':
|
|
scaled = *res * 6 / 25;
|
|
break;
|
|
default:
|
|
scaled = *res;
|
|
p--;
|
|
break;
|
|
}
|
|
if (flags & ROFFNUM_SCALE)
|
|
*res = scaled;
|
|
|
|
*pos = p + 1;
|
|
return(1);
|
|
}
|
|
|
|
/*
|
|
* Evaluate a string comparison condition.
|
|
* The first character is the delimiter.
|
|
* Succeed if the string up to its second occurrence
|
|
* matches the string up to its third occurence.
|
|
* Advance the cursor after the third occurrence
|
|
* or lacking that, to the end of the line.
|
|
*/
|
|
static int
|
|
roff_evalstrcond(const char *v, int *pos)
|
|
{
|
|
const char *s1, *s2, *s3;
|
|
int match;
|
|
|
|
match = 0;
|
|
s1 = v + *pos; /* initial delimiter */
|
|
s2 = s1 + 1; /* for scanning the first string */
|
|
s3 = strchr(s2, *s1); /* for scanning the second string */
|
|
|
|
if (NULL == s3) /* found no middle delimiter */
|
|
goto out;
|
|
|
|
while ('\0' != *++s3) {
|
|
if (*s2 != *s3) { /* mismatch */
|
|
s3 = strchr(s3, *s1);
|
|
break;
|
|
}
|
|
if (*s3 == *s1) { /* found the final delimiter */
|
|
match = 1;
|
|
break;
|
|
}
|
|
s2++;
|
|
}
|
|
|
|
out:
|
|
if (NULL == s3)
|
|
s3 = strchr(s2, '\0');
|
|
else if (*s3 != '\0')
|
|
s3++;
|
|
*pos = s3 - v;
|
|
return(match);
|
|
}
|
|
|
|
/*
|
|
* Evaluate an optionally negated single character, numerical,
|
|
* or string condition.
|
|
*/
|
|
static int
|
|
roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
|
|
{
|
|
int number, savepos, wanttrue;
|
|
|
|
if ('!' == v[*pos]) {
|
|
wanttrue = 0;
|
|
(*pos)++;
|
|
} else
|
|
wanttrue = 1;
|
|
|
|
switch (v[*pos]) {
|
|
case '\0':
|
|
return(0);
|
|
case 'n':
|
|
/* FALLTHROUGH */
|
|
case 'o':
|
|
(*pos)++;
|
|
return(wanttrue);
|
|
case 'c':
|
|
/* FALLTHROUGH */
|
|
case 'd':
|
|
/* FALLTHROUGH */
|
|
case 'e':
|
|
/* FALLTHROUGH */
|
|
case 'r':
|
|
/* FALLTHROUGH */
|
|
case 't':
|
|
/* FALLTHROUGH */
|
|
case 'v':
|
|
(*pos)++;
|
|
return(!wanttrue);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
savepos = *pos;
|
|
if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
|
|
return((number > 0) == wanttrue);
|
|
else if (*pos == savepos)
|
|
return(roff_evalstrcond(v, pos) == wanttrue);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_line_ignore(ROFF_ARGS)
|
|
{
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_insec(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
|
|
ln, ppos, roffs[tok].name);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_unsupp(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
|
|
ln, ppos, roffs[tok].name);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_cond(ROFF_ARGS)
|
|
{
|
|
|
|
roffnode_push(r, tok, NULL, ln, ppos);
|
|
|
|
/*
|
|
* An `.el' has no conditional body: it will consume the value
|
|
* of the current rstack entry set in prior `ie' calls or
|
|
* defaults to DENY.
|
|
*
|
|
* If we're not an `el', however, then evaluate the conditional.
|
|
*/
|
|
|
|
r->last->rule = tok == ROFF_el ?
|
|
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
|
|
roff_evalcond(r, ln, buf->buf, &pos);
|
|
|
|
/*
|
|
* An if-else will put the NEGATION of the current evaluated
|
|
* conditional into the stack of rules.
|
|
*/
|
|
|
|
if (tok == ROFF_ie) {
|
|
if (r->rstackpos + 1 == r->rstacksz) {
|
|
r->rstacksz += 16;
|
|
r->rstack = mandoc_reallocarray(r->rstack,
|
|
r->rstacksz, sizeof(int));
|
|
}
|
|
r->rstack[++r->rstackpos] = !r->last->rule;
|
|
}
|
|
|
|
/* If the parent has false as its rule, then so do we. */
|
|
|
|
if (r->last->parent && !r->last->parent->rule)
|
|
r->last->rule = 0;
|
|
|
|
/*
|
|
* Determine scope.
|
|
* If there is nothing on the line after the conditional,
|
|
* not even whitespace, use next-line scope.
|
|
*/
|
|
|
|
if (buf->buf[pos] == '\0') {
|
|
r->last->endspan = 2;
|
|
goto out;
|
|
}
|
|
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
|
|
/* An opening brace requests multiline scope. */
|
|
|
|
if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
|
|
r->last->endspan = -1;
|
|
pos += 2;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Anything else following the conditional causes
|
|
* single-line scope. Warn if the scope contains
|
|
* nothing but trailing whitespace.
|
|
*/
|
|
|
|
if (buf->buf[pos] == '\0')
|
|
mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
|
|
ln, ppos, roffs[tok].name);
|
|
|
|
r->last->endspan = 1;
|
|
|
|
out:
|
|
*offs = pos;
|
|
return(ROFF_RERUN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_ds(ROFF_ARGS)
|
|
{
|
|
char *string;
|
|
const char *name;
|
|
size_t namesz;
|
|
|
|
/* Ignore groff compatibility mode for now. */
|
|
|
|
if (tok == ROFF_ds1)
|
|
tok = ROFF_ds;
|
|
else if (tok == ROFF_as1)
|
|
tok = ROFF_as;
|
|
|
|
/*
|
|
* The first word is the name of the string.
|
|
* If it is empty or terminated by an escape sequence,
|
|
* abort the `ds' request without defining anything.
|
|
*/
|
|
|
|
name = string = buf->buf + pos;
|
|
if (*name == '\0')
|
|
return(ROFF_IGN);
|
|
|
|
namesz = roff_getname(r, &string, ln, pos);
|
|
if (name[namesz] == '\\')
|
|
return(ROFF_IGN);
|
|
|
|
/* Read past the initial double-quote, if any. */
|
|
if (*string == '"')
|
|
string++;
|
|
|
|
/* The rest is the value. */
|
|
roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
|
|
ROFF_as == tok);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
/*
|
|
* Parse a single operator, one or two characters long.
|
|
* If the operator is recognized, return success and advance the
|
|
* parse point, else return failure and let the parse point unchanged.
|
|
*/
|
|
static int
|
|
roff_getop(const char *v, int *pos, char *res)
|
|
{
|
|
|
|
*res = v[*pos];
|
|
|
|
switch (*res) {
|
|
case '+':
|
|
/* FALLTHROUGH */
|
|
case '-':
|
|
/* FALLTHROUGH */
|
|
case '*':
|
|
/* FALLTHROUGH */
|
|
case '/':
|
|
/* FALLTHROUGH */
|
|
case '%':
|
|
/* FALLTHROUGH */
|
|
case '&':
|
|
/* FALLTHROUGH */
|
|
case ':':
|
|
break;
|
|
case '<':
|
|
switch (v[*pos + 1]) {
|
|
case '=':
|
|
*res = 'l';
|
|
(*pos)++;
|
|
break;
|
|
case '>':
|
|
*res = '!';
|
|
(*pos)++;
|
|
break;
|
|
case '?':
|
|
*res = 'i';
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case '>':
|
|
switch (v[*pos + 1]) {
|
|
case '=':
|
|
*res = 'g';
|
|
(*pos)++;
|
|
break;
|
|
case '?':
|
|
*res = 'a';
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case '=':
|
|
if ('=' == v[*pos + 1])
|
|
(*pos)++;
|
|
break;
|
|
default:
|
|
return(0);
|
|
}
|
|
(*pos)++;
|
|
|
|
return(*res);
|
|
}
|
|
|
|
/*
|
|
* Evaluate either a parenthesized numeric expression
|
|
* or a single signed integer number.
|
|
*/
|
|
static int
|
|
roff_evalpar(struct roff *r, int ln,
|
|
const char *v, int *pos, int *res, int flags)
|
|
{
|
|
|
|
if ('(' != v[*pos])
|
|
return(roff_getnum(v, pos, res, flags));
|
|
|
|
(*pos)++;
|
|
if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
|
|
return(0);
|
|
|
|
/*
|
|
* Omission of the closing parenthesis
|
|
* is an error in validation mode,
|
|
* but ignored in evaluation mode.
|
|
*/
|
|
|
|
if (')' == v[*pos])
|
|
(*pos)++;
|
|
else if (NULL == res)
|
|
return(0);
|
|
|
|
return(1);
|
|
}
|
|
|
|
/*
|
|
* Evaluate a complete numeric expression.
|
|
* Proceed left to right, there is no concept of precedence.
|
|
*/
|
|
static int
|
|
roff_evalnum(struct roff *r, int ln, const char *v,
|
|
int *pos, int *res, int flags)
|
|
{
|
|
int mypos, operand2;
|
|
char operator;
|
|
|
|
if (NULL == pos) {
|
|
mypos = 0;
|
|
pos = &mypos;
|
|
}
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_evalpar(r, ln, v, pos, res, flags))
|
|
return(0);
|
|
|
|
while (1) {
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_getop(v, pos, &operator))
|
|
break;
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
|
|
return(0);
|
|
|
|
if (flags & ROFFNUM_WHITE)
|
|
while (isspace((unsigned char)v[*pos]))
|
|
(*pos)++;
|
|
|
|
if (NULL == res)
|
|
continue;
|
|
|
|
switch (operator) {
|
|
case '+':
|
|
*res += operand2;
|
|
break;
|
|
case '-':
|
|
*res -= operand2;
|
|
break;
|
|
case '*':
|
|
*res *= operand2;
|
|
break;
|
|
case '/':
|
|
if (operand2 == 0) {
|
|
mandoc_msg(MANDOCERR_DIVZERO,
|
|
r->parse, ln, *pos, v);
|
|
*res = 0;
|
|
break;
|
|
}
|
|
*res /= operand2;
|
|
break;
|
|
case '%':
|
|
if (operand2 == 0) {
|
|
mandoc_msg(MANDOCERR_DIVZERO,
|
|
r->parse, ln, *pos, v);
|
|
*res = 0;
|
|
break;
|
|
}
|
|
*res %= operand2;
|
|
break;
|
|
case '<':
|
|
*res = *res < operand2;
|
|
break;
|
|
case '>':
|
|
*res = *res > operand2;
|
|
break;
|
|
case 'l':
|
|
*res = *res <= operand2;
|
|
break;
|
|
case 'g':
|
|
*res = *res >= operand2;
|
|
break;
|
|
case '=':
|
|
*res = *res == operand2;
|
|
break;
|
|
case '!':
|
|
*res = *res != operand2;
|
|
break;
|
|
case '&':
|
|
*res = *res && operand2;
|
|
break;
|
|
case ':':
|
|
*res = *res || operand2;
|
|
break;
|
|
case 'i':
|
|
if (operand2 < *res)
|
|
*res = operand2;
|
|
break;
|
|
case 'a':
|
|
if (operand2 > *res)
|
|
*res = operand2;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
return(1);
|
|
}
|
|
|
|
void
|
|
roff_setreg(struct roff *r, const char *name, int val, char sign)
|
|
{
|
|
struct roffreg *reg;
|
|
|
|
/* Search for an existing register with the same name. */
|
|
reg = r->regtab;
|
|
|
|
while (reg && strcmp(name, reg->key.p))
|
|
reg = reg->next;
|
|
|
|
if (NULL == reg) {
|
|
/* Create a new register. */
|
|
reg = mandoc_malloc(sizeof(struct roffreg));
|
|
reg->key.p = mandoc_strdup(name);
|
|
reg->key.sz = strlen(name);
|
|
reg->val = 0;
|
|
reg->next = r->regtab;
|
|
r->regtab = reg;
|
|
}
|
|
|
|
if ('+' == sign)
|
|
reg->val += val;
|
|
else if ('-' == sign)
|
|
reg->val -= val;
|
|
else
|
|
reg->val = val;
|
|
}
|
|
|
|
/*
|
|
* Handle some predefined read-only number registers.
|
|
* For now, return -1 if the requested register is not predefined;
|
|
* in case a predefined read-only register having the value -1
|
|
* were to turn up, another special value would have to be chosen.
|
|
*/
|
|
static int
|
|
roff_getregro(const char *name)
|
|
{
|
|
|
|
switch (*name) {
|
|
case 'A': /* ASCII approximation mode is always off. */
|
|
return(0);
|
|
case 'g': /* Groff compatibility mode is always on. */
|
|
return(1);
|
|
case 'H': /* Fixed horizontal resolution. */
|
|
return (24);
|
|
case 'j': /* Always adjust left margin only. */
|
|
return(0);
|
|
case 'T': /* Some output device is always defined. */
|
|
return(1);
|
|
case 'V': /* Fixed vertical resolution. */
|
|
return (40);
|
|
default:
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
int
|
|
roff_getreg(const struct roff *r, const char *name)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
|
|
val = roff_getregro(name + 1);
|
|
if (-1 != val)
|
|
return (val);
|
|
}
|
|
|
|
for (reg = r->regtab; reg; reg = reg->next)
|
|
if (0 == strcmp(name, reg->key.p))
|
|
return(reg->val);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
roff_getregn(const struct roff *r, const char *name, size_t len)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && 2 == len) {
|
|
val = roff_getregro(name + 1);
|
|
if (-1 != val)
|
|
return (val);
|
|
}
|
|
|
|
for (reg = r->regtab; reg; reg = reg->next)
|
|
if (len == reg->key.sz &&
|
|
0 == strncmp(name, reg->key.p, len))
|
|
return(reg->val);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
roff_freereg(struct roffreg *reg)
|
|
{
|
|
struct roffreg *old_reg;
|
|
|
|
while (NULL != reg) {
|
|
free(reg->key.p);
|
|
old_reg = reg;
|
|
reg = reg->next;
|
|
free(old_reg);
|
|
}
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_nr(ROFF_ARGS)
|
|
{
|
|
char *key, *val;
|
|
size_t keysz;
|
|
int iv;
|
|
char sign;
|
|
|
|
key = val = buf->buf + pos;
|
|
if (*key == '\0')
|
|
return(ROFF_IGN);
|
|
|
|
keysz = roff_getname(r, &val, ln, pos);
|
|
if (key[keysz] == '\\')
|
|
return(ROFF_IGN);
|
|
key[keysz] = '\0';
|
|
|
|
sign = *val;
|
|
if (sign == '+' || sign == '-')
|
|
val++;
|
|
|
|
if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
|
|
roff_setreg(r, key, iv, sign);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_rr(ROFF_ARGS)
|
|
{
|
|
struct roffreg *reg, **prev;
|
|
char *name, *cp;
|
|
size_t namesz;
|
|
|
|
name = cp = buf->buf + pos;
|
|
if (*name == '\0')
|
|
return(ROFF_IGN);
|
|
namesz = roff_getname(r, &cp, ln, pos);
|
|
name[namesz] = '\0';
|
|
|
|
prev = &r->regtab;
|
|
while (1) {
|
|
reg = *prev;
|
|
if (reg == NULL || !strcmp(name, reg->key.p))
|
|
break;
|
|
prev = ®->next;
|
|
}
|
|
if (reg != NULL) {
|
|
*prev = reg->next;
|
|
free(reg->key.p);
|
|
free(reg);
|
|
}
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_rm(ROFF_ARGS)
|
|
{
|
|
const char *name;
|
|
char *cp;
|
|
size_t namesz;
|
|
|
|
cp = buf->buf + pos;
|
|
while (*cp != '\0') {
|
|
name = cp;
|
|
namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
|
|
roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
|
|
if (name[namesz] == '\\')
|
|
break;
|
|
}
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_it(ROFF_ARGS)
|
|
{
|
|
int iv;
|
|
|
|
/* Parse the number of lines. */
|
|
|
|
if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
|
|
mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
|
|
ln, ppos, buf->buf + 1);
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
while (isspace((unsigned char)buf->buf[pos]))
|
|
pos++;
|
|
|
|
/*
|
|
* Arm the input line trap.
|
|
* Special-casing "an-trap" is an ugly workaround to cope
|
|
* with DocBook stupidly fiddling with man(7) internals.
|
|
*/
|
|
|
|
roffit_lines = iv;
|
|
roffit_macro = mandoc_strdup(iv != 1 ||
|
|
strcmp(buf->buf + pos, "an-trap") ?
|
|
buf->buf + pos : "br");
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_Dd(ROFF_ARGS)
|
|
{
|
|
const char *const *cp;
|
|
|
|
if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
|
|
for (cp = __mdoc_reserved; *cp; cp++)
|
|
roff_setstr(r, *cp, NULL, 0);
|
|
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MDOC;
|
|
|
|
return(ROFF_CONT);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_TH(ROFF_ARGS)
|
|
{
|
|
const char *const *cp;
|
|
|
|
if ((r->options & MPARSE_QUICK) == 0)
|
|
for (cp = __man_reserved; *cp; cp++)
|
|
roff_setstr(r, *cp, NULL, 0);
|
|
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MAN;
|
|
|
|
return(ROFF_CONT);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_TE(ROFF_ARGS)
|
|
{
|
|
|
|
if (NULL == r->tbl)
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "TE");
|
|
else if ( ! tbl_end(&r->tbl)) {
|
|
free(buf->buf);
|
|
buf->buf = mandoc_strdup(".sp");
|
|
buf->sz = 4;
|
|
return(ROFF_REPARSE);
|
|
}
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_T_(ROFF_ARGS)
|
|
{
|
|
|
|
if (NULL == r->tbl)
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
|
|
ln, ppos, "T&");
|
|
else
|
|
tbl_restart(ppos, ln, r->tbl);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
/*
|
|
* Handle in-line equation delimiters.
|
|
*/
|
|
static enum rofferr
|
|
roff_eqndelim(struct roff *r, struct buf *buf, int pos)
|
|
{
|
|
char *cp1, *cp2;
|
|
const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
|
|
|
|
/*
|
|
* Outside equations, look for an opening delimiter.
|
|
* If we are inside an equation, we already know it is
|
|
* in-line, or this function wouldn't have been called;
|
|
* so look for a closing delimiter.
|
|
*/
|
|
|
|
cp1 = buf->buf + pos;
|
|
cp2 = strchr(cp1, r->eqn == NULL ?
|
|
r->last_eqn->odelim : r->last_eqn->cdelim);
|
|
if (cp2 == NULL)
|
|
return(ROFF_CONT);
|
|
|
|
*cp2++ = '\0';
|
|
bef_pr = bef_nl = aft_nl = aft_pr = "";
|
|
|
|
/* Handle preceding text, protecting whitespace. */
|
|
|
|
if (*buf->buf != '\0') {
|
|
if (r->eqn == NULL)
|
|
bef_pr = "\\&";
|
|
bef_nl = "\n";
|
|
}
|
|
|
|
/*
|
|
* Prepare replacing the delimiter with an equation macro
|
|
* and drop leading white space from the equation.
|
|
*/
|
|
|
|
if (r->eqn == NULL) {
|
|
while (*cp2 == ' ')
|
|
cp2++;
|
|
mac = ".EQ";
|
|
} else
|
|
mac = ".EN";
|
|
|
|
/* Handle following text, protecting whitespace. */
|
|
|
|
if (*cp2 != '\0') {
|
|
aft_nl = "\n";
|
|
if (r->eqn != NULL)
|
|
aft_pr = "\\&";
|
|
}
|
|
|
|
/* Do the actual replacement. */
|
|
|
|
buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
|
|
bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
|
|
free(buf->buf);
|
|
buf->buf = cp1;
|
|
|
|
/* Toggle the in-line state of the eqn subsystem. */
|
|
|
|
r->eqn_inline = r->eqn == NULL;
|
|
return(ROFF_REPARSE);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_EQ(ROFF_ARGS)
|
|
{
|
|
struct eqn_node *e;
|
|
|
|
assert(r->eqn == NULL);
|
|
e = eqn_alloc(ppos, ln, r->parse);
|
|
|
|
if (r->last_eqn) {
|
|
r->last_eqn->next = e;
|
|
e->delim = r->last_eqn->delim;
|
|
e->odelim = r->last_eqn->odelim;
|
|
e->cdelim = r->last_eqn->cdelim;
|
|
} else
|
|
r->first_eqn = r->last_eqn = e;
|
|
|
|
r->eqn = r->last_eqn = e;
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
|
|
".EQ %s", buf->buf + pos);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_EN(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_TS(ROFF_ARGS)
|
|
{
|
|
struct tbl_node *tbl;
|
|
|
|
if (r->tbl) {
|
|
mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
|
|
ln, ppos, "TS breaks TS");
|
|
tbl_end(&r->tbl);
|
|
}
|
|
|
|
tbl = tbl_alloc(ppos, ln, r->parse);
|
|
|
|
if (r->last_tbl)
|
|
r->last_tbl->next = tbl;
|
|
else
|
|
r->first_tbl = r->last_tbl = tbl;
|
|
|
|
r->tbl = r->last_tbl = tbl;
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_brp(ROFF_ARGS)
|
|
{
|
|
|
|
buf->buf[pos - 1] = '\0';
|
|
return(ROFF_CONT);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_cc(ROFF_ARGS)
|
|
{
|
|
const char *p;
|
|
|
|
p = buf->buf + pos;
|
|
|
|
if (*p == '\0' || (r->control = *p++) == '.')
|
|
r->control = 0;
|
|
|
|
if (*p != '\0')
|
|
mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
|
|
ln, p - buf->buf, "cc ... %s", p);
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_tr(ROFF_ARGS)
|
|
{
|
|
const char *p, *first, *second;
|
|
size_t fsz, ssz;
|
|
enum mandoc_esc esc;
|
|
|
|
p = buf->buf + pos;
|
|
|
|
if (*p == '\0') {
|
|
mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
while (*p != '\0') {
|
|
fsz = ssz = 1;
|
|
|
|
first = p++;
|
|
if (*first == '\\') {
|
|
esc = mandoc_escape(&p, NULL, NULL);
|
|
if (esc == ESCAPE_ERROR) {
|
|
mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
|
|
ln, (int)(p - buf->buf), first);
|
|
return(ROFF_IGN);
|
|
}
|
|
fsz = (size_t)(p - first);
|
|
}
|
|
|
|
second = p++;
|
|
if (*second == '\\') {
|
|
esc = mandoc_escape(&p, NULL, NULL);
|
|
if (esc == ESCAPE_ERROR) {
|
|
mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
|
|
ln, (int)(p - buf->buf), second);
|
|
return(ROFF_IGN);
|
|
}
|
|
ssz = (size_t)(p - second);
|
|
} else if (*second == '\0') {
|
|
mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
|
|
ln, first - buf->buf, "tr %s", first);
|
|
second = " ";
|
|
p--;
|
|
}
|
|
|
|
if (fsz > 1) {
|
|
roff_setstrn(&r->xmbtab, first, fsz,
|
|
second, ssz, 0);
|
|
continue;
|
|
}
|
|
|
|
if (r->xtab == NULL)
|
|
r->xtab = mandoc_calloc(128,
|
|
sizeof(struct roffstr));
|
|
|
|
free(r->xtab[(int)*first].p);
|
|
r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
|
|
r->xtab[(int)*first].sz = ssz;
|
|
}
|
|
|
|
return(ROFF_IGN);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_so(ROFF_ARGS)
|
|
{
|
|
char *name, *cp;
|
|
|
|
name = buf->buf + pos;
|
|
mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
|
|
|
|
/*
|
|
* Handle `so'. Be EXTREMELY careful, as we shouldn't be
|
|
* opening anything that's not in our cwd or anything beneath
|
|
* it. Thus, explicitly disallow traversing up the file-system
|
|
* or using absolute paths.
|
|
*/
|
|
|
|
if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
|
|
mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
|
|
".so %s", name);
|
|
buf->sz = mandoc_asprintf(&cp,
|
|
".sp\nSee the file %s.\n.sp", name) + 1;
|
|
free(buf->buf);
|
|
buf->buf = cp;
|
|
*offs = 0;
|
|
return(ROFF_REPARSE);
|
|
}
|
|
|
|
*offs = pos;
|
|
return(ROFF_SO);
|
|
}
|
|
|
|
static enum rofferr
|
|
roff_userdef(ROFF_ARGS)
|
|
{
|
|
const char *arg[9], *ap;
|
|
char *cp, *n1, *n2;
|
|
int i;
|
|
size_t asz, rsz;
|
|
|
|
/*
|
|
* Collect pointers to macro argument strings
|
|
* and NUL-terminate them.
|
|
*/
|
|
|
|
cp = buf->buf + pos;
|
|
for (i = 0; i < 9; i++)
|
|
arg[i] = *cp == '\0' ? "" :
|
|
mandoc_getarg(r->parse, &cp, ln, &pos);
|
|
|
|
/*
|
|
* Expand macro arguments.
|
|
*/
|
|
|
|
buf->sz = strlen(r->current_string) + 1;
|
|
n1 = cp = mandoc_malloc(buf->sz);
|
|
memcpy(n1, r->current_string, buf->sz);
|
|
while (*cp != '\0') {
|
|
|
|
/* Scan ahead for the next argument invocation. */
|
|
|
|
if (*cp++ != '\\')
|
|
continue;
|
|
if (*cp++ != '$')
|
|
continue;
|
|
i = *cp - '1';
|
|
if (0 > i || 8 < i)
|
|
continue;
|
|
cp -= 2;
|
|
|
|
/*
|
|
* Determine the size of the expanded argument,
|
|
* taking escaping of quotes into account.
|
|
*/
|
|
|
|
asz = 0;
|
|
for (ap = arg[i]; *ap != '\0'; ap++) {
|
|
asz++;
|
|
if (*ap == '"')
|
|
asz += 3;
|
|
}
|
|
if (asz != 3) {
|
|
|
|
/*
|
|
* Determine the size of the rest of the
|
|
* unexpanded macro, including the NUL.
|
|
*/
|
|
|
|
rsz = buf->sz - (cp - n1) - 3;
|
|
|
|
/*
|
|
* When shrinking, move before
|
|
* releasing the storage.
|
|
*/
|
|
|
|
if (asz < 3)
|
|
memmove(cp + asz, cp + 3, rsz);
|
|
|
|
/*
|
|
* Resize the storage for the macro
|
|
* and readjust the parse pointer.
|
|
*/
|
|
|
|
buf->sz += asz - 3;
|
|
n2 = mandoc_realloc(n1, buf->sz);
|
|
cp = n2 + (cp - n1);
|
|
n1 = n2;
|
|
|
|
/*
|
|
* When growing, make room
|
|
* for the expanded argument.
|
|
*/
|
|
|
|
if (asz > 3)
|
|
memmove(cp + asz, cp + 3, rsz);
|
|
}
|
|
|
|
/* Copy the expanded argument, escaping quotes. */
|
|
|
|
n2 = cp;
|
|
for (ap = arg[i]; *ap != '\0'; ap++) {
|
|
if (*ap == '"') {
|
|
memcpy(n2, "\\(dq", 4);
|
|
n2 += 4;
|
|
} else
|
|
*n2++ = *ap;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Replace the macro invocation
|
|
* by the expanded macro.
|
|
*/
|
|
|
|
free(buf->buf);
|
|
buf->buf = n1;
|
|
*offs = 0;
|
|
|
|
return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
|
|
ROFF_REPARSE : ROFF_APPEND);
|
|
}
|
|
|
|
static size_t
|
|
roff_getname(struct roff *r, char **cpp, int ln, int pos)
|
|
{
|
|
char *name, *cp;
|
|
size_t namesz;
|
|
|
|
name = *cpp;
|
|
if ('\0' == *name)
|
|
return(0);
|
|
|
|
/* Read until end of name and terminate it with NUL. */
|
|
for (cp = name; 1; cp++) {
|
|
if ('\0' == *cp || ' ' == *cp) {
|
|
namesz = cp - name;
|
|
break;
|
|
}
|
|
if ('\\' != *cp)
|
|
continue;
|
|
namesz = cp - name;
|
|
if ('{' == cp[1] || '}' == cp[1])
|
|
break;
|
|
cp++;
|
|
if ('\\' == *cp)
|
|
continue;
|
|
mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
|
|
"%.*s", (int)(cp - name + 1), name);
|
|
mandoc_escape((const char **)&cp, NULL, NULL);
|
|
break;
|
|
}
|
|
|
|
/* Read past spaces. */
|
|
while (' ' == *cp)
|
|
cp++;
|
|
|
|
*cpp = cp;
|
|
return(namesz);
|
|
}
|
|
|
|
/*
|
|
* Store *string into the user-defined string called *name.
|
|
* To clear an existing entry, call with (*r, *name, NULL, 0).
|
|
* append == 0: replace mode
|
|
* append == 1: single-line append mode
|
|
* append == 2: multiline append mode, append '\n' after each call
|
|
*/
|
|
static void
|
|
roff_setstr(struct roff *r, const char *name, const char *string,
|
|
int append)
|
|
{
|
|
|
|
roff_setstrn(&r->strtab, name, strlen(name), string,
|
|
string ? strlen(string) : 0, append);
|
|
}
|
|
|
|
static void
|
|
roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
|
|
const char *string, size_t stringsz, int append)
|
|
{
|
|
struct roffkv *n;
|
|
char *c;
|
|
int i;
|
|
size_t oldch, newch;
|
|
|
|
/* Search for an existing string with the same name. */
|
|
n = *r;
|
|
|
|
while (n && (namesz != n->key.sz ||
|
|
strncmp(n->key.p, name, namesz)))
|
|
n = n->next;
|
|
|
|
if (NULL == n) {
|
|
/* Create a new string table entry. */
|
|
n = mandoc_malloc(sizeof(struct roffkv));
|
|
n->key.p = mandoc_strndup(name, namesz);
|
|
n->key.sz = namesz;
|
|
n->val.p = NULL;
|
|
n->val.sz = 0;
|
|
n->next = *r;
|
|
*r = n;
|
|
} else if (0 == append) {
|
|
free(n->val.p);
|
|
n->val.p = NULL;
|
|
n->val.sz = 0;
|
|
}
|
|
|
|
if (NULL == string)
|
|
return;
|
|
|
|
/*
|
|
* One additional byte for the '\n' in multiline mode,
|
|
* and one for the terminating '\0'.
|
|
*/
|
|
newch = stringsz + (1 < append ? 2u : 1u);
|
|
|
|
if (NULL == n->val.p) {
|
|
n->val.p = mandoc_malloc(newch);
|
|
*n->val.p = '\0';
|
|
oldch = 0;
|
|
} else {
|
|
oldch = n->val.sz;
|
|
n->val.p = mandoc_realloc(n->val.p, oldch + newch);
|
|
}
|
|
|
|
/* Skip existing content in the destination buffer. */
|
|
c = n->val.p + (int)oldch;
|
|
|
|
/* Append new content to the destination buffer. */
|
|
i = 0;
|
|
while (i < (int)stringsz) {
|
|
/*
|
|
* Rudimentary roff copy mode:
|
|
* Handle escaped backslashes.
|
|
*/
|
|
if ('\\' == string[i] && '\\' == string[i + 1])
|
|
i++;
|
|
*c++ = string[i++];
|
|
}
|
|
|
|
/* Append terminating bytes. */
|
|
if (1 < append)
|
|
*c++ = '\n';
|
|
|
|
*c = '\0';
|
|
n->val.sz = (int)(c - n->val.p);
|
|
}
|
|
|
|
static const char *
|
|
roff_getstrn(const struct roff *r, const char *name, size_t len)
|
|
{
|
|
const struct roffkv *n;
|
|
int i;
|
|
|
|
for (n = r->strtab; n; n = n->next)
|
|
if (0 == strncmp(name, n->key.p, len) &&
|
|
'\0' == n->key.p[(int)len])
|
|
return(n->val.p);
|
|
|
|
for (i = 0; i < PREDEFS_MAX; i++)
|
|
if (0 == strncmp(name, predefs[i].name, len) &&
|
|
'\0' == predefs[i].name[(int)len])
|
|
return(predefs[i].str);
|
|
|
|
return(NULL);
|
|
}
|
|
|
|
static void
|
|
roff_freestr(struct roffkv *r)
|
|
{
|
|
struct roffkv *n, *nn;
|
|
|
|
for (n = r; n; n = nn) {
|
|
free(n->key.p);
|
|
free(n->val.p);
|
|
nn = n->next;
|
|
free(n);
|
|
}
|
|
}
|
|
|
|
const struct tbl_span *
|
|
roff_span(const struct roff *r)
|
|
{
|
|
|
|
return(r->tbl ? tbl_span(r->tbl) : NULL);
|
|
}
|
|
|
|
const struct eqn *
|
|
roff_eqn(const struct roff *r)
|
|
{
|
|
|
|
return(r->last_eqn ? &r->last_eqn->eqn : NULL);
|
|
}
|
|
|
|
/*
|
|
* Duplicate an input string, making the appropriate character
|
|
* conversations (as stipulated by `tr') along the way.
|
|
* Returns a heap-allocated string with all the replacements made.
|
|
*/
|
|
char *
|
|
roff_strdup(const struct roff *r, const char *p)
|
|
{
|
|
const struct roffkv *cp;
|
|
char *res;
|
|
const char *pp;
|
|
size_t ssz, sz;
|
|
enum mandoc_esc esc;
|
|
|
|
if (NULL == r->xmbtab && NULL == r->xtab)
|
|
return(mandoc_strdup(p));
|
|
else if ('\0' == *p)
|
|
return(mandoc_strdup(""));
|
|
|
|
/*
|
|
* Step through each character looking for term matches
|
|
* (remember that a `tr' can be invoked with an escape, which is
|
|
* a glyph but the escape is multi-character).
|
|
* We only do this if the character hash has been initialised
|
|
* and the string is >0 length.
|
|
*/
|
|
|
|
res = NULL;
|
|
ssz = 0;
|
|
|
|
while ('\0' != *p) {
|
|
if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
|
|
sz = r->xtab[(int)*p].sz;
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, r->xtab[(int)*p].p, sz);
|
|
ssz += sz;
|
|
p++;
|
|
continue;
|
|
} else if ('\\' != *p) {
|
|
res = mandoc_realloc(res, ssz + 2);
|
|
res[ssz++] = *p++;
|
|
continue;
|
|
}
|
|
|
|
/* Search for term matches. */
|
|
for (cp = r->xmbtab; cp; cp = cp->next)
|
|
if (0 == strncmp(p, cp->key.p, cp->key.sz))
|
|
break;
|
|
|
|
if (NULL != cp) {
|
|
/*
|
|
* A match has been found.
|
|
* Append the match to the array and move
|
|
* forward by its keysize.
|
|
*/
|
|
res = mandoc_realloc(res,
|
|
ssz + cp->val.sz + 1);
|
|
memcpy(res + ssz, cp->val.p, cp->val.sz);
|
|
ssz += cp->val.sz;
|
|
p += (int)cp->key.sz;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Handle escapes carefully: we need to copy
|
|
* over just the escape itself, or else we might
|
|
* do replacements within the escape itself.
|
|
* Make sure to pass along the bogus string.
|
|
*/
|
|
pp = p++;
|
|
esc = mandoc_escape(&p, NULL, NULL);
|
|
if (ESCAPE_ERROR == esc) {
|
|
sz = strlen(pp);
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, pp, sz);
|
|
break;
|
|
}
|
|
/*
|
|
* We bail out on bad escapes.
|
|
* No need to warn: we already did so when
|
|
* roff_res() was called.
|
|
*/
|
|
sz = (int)(p - pp);
|
|
res = mandoc_realloc(res, ssz + sz + 1);
|
|
memcpy(res + ssz, pp, sz);
|
|
ssz += sz;
|
|
}
|
|
|
|
res[(int)ssz] = '\0';
|
|
return(res);
|
|
}
|
|
|
|
int
|
|
roff_getformat(const struct roff *r)
|
|
{
|
|
|
|
return(r->format);
|
|
}
|
|
|
|
/*
|
|
* Find out whether a line is a macro line or not.
|
|
* If it is, adjust the current position and return one; if it isn't,
|
|
* return zero and don't change the current position.
|
|
* If the control character has been set with `.cc', then let that grain
|
|
* precedence.
|
|
* This is slighly contrary to groff, where using the non-breaking
|
|
* control character when `cc' has been invoked will cause the
|
|
* non-breaking macro contents to be printed verbatim.
|
|
*/
|
|
int
|
|
roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
|
|
{
|
|
int pos;
|
|
|
|
pos = *ppos;
|
|
|
|
if (0 != r->control && cp[pos] == r->control)
|
|
pos++;
|
|
else if (0 != r->control)
|
|
return(0);
|
|
else if ('\\' == cp[pos] && '.' == cp[pos + 1])
|
|
pos += 2;
|
|
else if ('.' == cp[pos] || '\'' == cp[pos])
|
|
pos++;
|
|
else
|
|
return(0);
|
|
|
|
while (' ' == cp[pos] || '\t' == cp[pos])
|
|
pos++;
|
|
|
|
*ppos = pos;
|
|
return(1);
|
|
}
|