4391 lines
101 KiB
C
4391 lines
101 KiB
C
/* $Id: roff.c,v 1.378 2021/08/10 12:55:04 schwarze Exp $ */
|
|
/*
|
|
* Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
|
|
* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* Implementation of the roff(7) parser for mandoc(1).
|
|
*/
|
|
#include "config.h"
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "mandoc_aux.h"
|
|
#include "mandoc_ohash.h"
|
|
#include "mandoc.h"
|
|
#include "roff.h"
|
|
#include "mandoc_parse.h"
|
|
#include "libmandoc.h"
|
|
#include "roff_int.h"
|
|
#include "tbl_parse.h"
|
|
#include "eqn_parse.h"
|
|
|
|
/*
|
|
* ASCII_ESC is used to signal from roff_getarg() to roff_expand()
|
|
* that an escape sequence resulted from copy-in processing and
|
|
* needs to be checked or interpolated. As it is used nowhere
|
|
* else, it is defined here rather than in a header file.
|
|
*/
|
|
#define ASCII_ESC 27
|
|
|
|
/* Maximum number of string expansions per line, to break infinite loops. */
|
|
#define EXPAND_LIMIT 1000
|
|
|
|
/* Types of definitions of macros and strings. */
|
|
#define ROFFDEF_USER (1 << 1) /* User-defined. */
|
|
#define ROFFDEF_PRE (1 << 2) /* Predefined. */
|
|
#define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
|
|
#define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
|
|
#define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
|
|
ROFFDEF_REN | ROFFDEF_STD)
|
|
#define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
|
|
|
|
/* --- data types --------------------------------------------------------- */
|
|
|
|
/*
|
|
* An incredibly-simple string buffer.
|
|
*/
|
|
struct roffstr {
|
|
char *p; /* nil-terminated buffer */
|
|
size_t sz; /* saved strlen(p) */
|
|
};
|
|
|
|
/*
|
|
* A key-value roffstr pair as part of a singly-linked list.
|
|
*/
|
|
struct roffkv {
|
|
struct roffstr key;
|
|
struct roffstr val;
|
|
struct roffkv *next; /* next in list */
|
|
};
|
|
|
|
/*
|
|
* A single number register as part of a singly-linked list.
|
|
*/
|
|
struct roffreg {
|
|
struct roffstr key;
|
|
int val;
|
|
int step;
|
|
struct roffreg *next;
|
|
};
|
|
|
|
/*
|
|
* Association of request and macro names with token IDs.
|
|
*/
|
|
struct roffreq {
|
|
enum roff_tok tok;
|
|
char name[];
|
|
};
|
|
|
|
/*
|
|
* A macro processing context.
|
|
* More than one is needed when macro calls are nested.
|
|
*/
|
|
struct mctx {
|
|
char **argv;
|
|
int argc;
|
|
int argsz;
|
|
};
|
|
|
|
struct roff {
|
|
struct roff_man *man; /* mdoc or man parser */
|
|
struct roffnode *last; /* leaf of stack */
|
|
struct mctx *mstack; /* stack of macro contexts */
|
|
int *rstack; /* stack of inverted `ie' values */
|
|
struct ohash *reqtab; /* request lookup table */
|
|
struct roffreg *regtab; /* number registers */
|
|
struct roffkv *strtab; /* user-defined strings & macros */
|
|
struct roffkv *rentab; /* renamed strings & macros */
|
|
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
|
|
struct roffstr *xtab; /* single-byte trans table (`tr') */
|
|
const char *current_string; /* value of last called user macro */
|
|
struct tbl_node *first_tbl; /* first table parsed */
|
|
struct tbl_node *last_tbl; /* last table parsed */
|
|
struct tbl_node *tbl; /* current table being parsed */
|
|
struct eqn_node *last_eqn; /* equation parser */
|
|
struct eqn_node *eqn; /* active equation parser */
|
|
int eqn_inline; /* current equation is inline */
|
|
int options; /* parse options */
|
|
int mstacksz; /* current size of mstack */
|
|
int mstackpos; /* position in mstack */
|
|
int rstacksz; /* current size limit of rstack */
|
|
int rstackpos; /* position in rstack */
|
|
int format; /* current file in mdoc or man format */
|
|
char control; /* control character */
|
|
char escape; /* escape character */
|
|
};
|
|
|
|
/*
|
|
* A macro definition, condition, or ignored block.
|
|
*/
|
|
struct roffnode {
|
|
enum roff_tok tok; /* type of node */
|
|
struct roffnode *parent; /* up one in stack */
|
|
int line; /* parse line */
|
|
int col; /* parse col */
|
|
char *name; /* node name, e.g. macro name */
|
|
char *end; /* custom end macro of the block */
|
|
int endspan; /* scope to: 1=eol 2=next line -1=\} */
|
|
int rule; /* content is: 1=evaluated 0=skipped */
|
|
};
|
|
|
|
#define ROFF_ARGS struct roff *r, /* parse ctx */ \
|
|
enum roff_tok tok, /* tok of macro */ \
|
|
struct buf *buf, /* input buffer */ \
|
|
int ln, /* parse line */ \
|
|
int ppos, /* original pos in buffer */ \
|
|
int pos, /* current pos in buffer */ \
|
|
int *offs /* reset offset of buffer data */
|
|
|
|
typedef int (*roffproc)(ROFF_ARGS);
|
|
|
|
struct roffmac {
|
|
roffproc proc; /* process new macro */
|
|
roffproc text; /* process as child text of macro */
|
|
roffproc sub; /* process as child of macro */
|
|
int flags;
|
|
#define ROFFMAC_STRUCT (1 << 0) /* always interpret */
|
|
};
|
|
|
|
struct predef {
|
|
const char *name; /* predefined input name */
|
|
const char *str; /* replacement symbol */
|
|
};
|
|
|
|
#define PREDEF(__name, __str) \
|
|
{ (__name), (__str) },
|
|
|
|
/* --- function prototypes ------------------------------------------------ */
|
|
|
|
static int roffnode_cleanscope(struct roff *);
|
|
static int roffnode_pop(struct roff *);
|
|
static void roffnode_push(struct roff *, enum roff_tok,
|
|
const char *, int, int);
|
|
static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
|
|
static int roff_als(ROFF_ARGS);
|
|
static int roff_block(ROFF_ARGS);
|
|
static int roff_block_text(ROFF_ARGS);
|
|
static int roff_block_sub(ROFF_ARGS);
|
|
static int roff_break(ROFF_ARGS);
|
|
static int roff_cblock(ROFF_ARGS);
|
|
static int roff_cc(ROFF_ARGS);
|
|
static int roff_ccond(struct roff *, int, int);
|
|
static int roff_char(ROFF_ARGS);
|
|
static int roff_cond(ROFF_ARGS);
|
|
static int roff_cond_checkend(ROFF_ARGS);
|
|
static int roff_cond_text(ROFF_ARGS);
|
|
static int roff_cond_sub(ROFF_ARGS);
|
|
static int roff_ds(ROFF_ARGS);
|
|
static int roff_ec(ROFF_ARGS);
|
|
static int roff_eo(ROFF_ARGS);
|
|
static int roff_eqndelim(struct roff *, struct buf *, int);
|
|
static int roff_evalcond(struct roff *, int, char *, int *);
|
|
static int roff_evalnum(struct roff *, int,
|
|
const char *, int *, int *, int);
|
|
static int roff_evalpar(struct roff *, int,
|
|
const char *, int *, int *, int);
|
|
static int roff_evalstrcond(const char *, int *);
|
|
static int roff_expand(struct roff *, struct buf *,
|
|
int, int, char);
|
|
static void roff_free1(struct roff *);
|
|
static void roff_freereg(struct roffreg *);
|
|
static void roff_freestr(struct roffkv *);
|
|
static size_t roff_getname(struct roff *, char **, int, int);
|
|
static int roff_getnum(const char *, int *, int *, int);
|
|
static int roff_getop(const char *, int *, char *);
|
|
static int roff_getregn(struct roff *,
|
|
const char *, size_t, char);
|
|
static int roff_getregro(const struct roff *,
|
|
const char *name);
|
|
static const char *roff_getstrn(struct roff *,
|
|
const char *, size_t, int *);
|
|
static int roff_hasregn(const struct roff *,
|
|
const char *, size_t);
|
|
static int roff_insec(ROFF_ARGS);
|
|
static int roff_it(ROFF_ARGS);
|
|
static int roff_line_ignore(ROFF_ARGS);
|
|
static void roff_man_alloc1(struct roff_man *);
|
|
static void roff_man_free1(struct roff_man *);
|
|
static int roff_manyarg(ROFF_ARGS);
|
|
static int roff_noarg(ROFF_ARGS);
|
|
static int roff_nop(ROFF_ARGS);
|
|
static int roff_nr(ROFF_ARGS);
|
|
static int roff_onearg(ROFF_ARGS);
|
|
static enum roff_tok roff_parse(struct roff *, char *, int *,
|
|
int, int);
|
|
static int roff_parsetext(struct roff *, struct buf *,
|
|
int, int *);
|
|
static int roff_renamed(ROFF_ARGS);
|
|
static int roff_return(ROFF_ARGS);
|
|
static int roff_rm(ROFF_ARGS);
|
|
static int roff_rn(ROFF_ARGS);
|
|
static int roff_rr(ROFF_ARGS);
|
|
static void roff_setregn(struct roff *, const char *,
|
|
size_t, int, char, int);
|
|
static void roff_setstr(struct roff *,
|
|
const char *, const char *, int);
|
|
static void roff_setstrn(struct roffkv **, const char *,
|
|
size_t, const char *, size_t, int);
|
|
static int roff_shift(ROFF_ARGS);
|
|
static int roff_so(ROFF_ARGS);
|
|
static int roff_tr(ROFF_ARGS);
|
|
static int roff_Dd(ROFF_ARGS);
|
|
static int roff_TE(ROFF_ARGS);
|
|
static int roff_TS(ROFF_ARGS);
|
|
static int roff_EQ(ROFF_ARGS);
|
|
static int roff_EN(ROFF_ARGS);
|
|
static int roff_T_(ROFF_ARGS);
|
|
static int roff_unsupp(ROFF_ARGS);
|
|
static int roff_userdef(ROFF_ARGS);
|
|
|
|
/* --- constant data ------------------------------------------------------ */
|
|
|
|
#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
|
|
#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
|
|
|
|
const char *__roff_name[MAN_MAX + 1] = {
|
|
"br", "ce", "fi", "ft",
|
|
"ll", "mc", "nf",
|
|
"po", "rj", "sp",
|
|
"ta", "ti", NULL,
|
|
"ab", "ad", "af", "aln",
|
|
"als", "am", "am1", "ami",
|
|
"ami1", "as", "as1", "asciify",
|
|
"backtrace", "bd", "bleedat", "blm",
|
|
"box", "boxa", "bp", "BP",
|
|
"break", "breakchar", "brnl", "brp",
|
|
"brpnl", "c2", "cc",
|
|
"cf", "cflags", "ch", "char",
|
|
"chop", "class", "close", "CL",
|
|
"color", "composite", "continue", "cp",
|
|
"cropat", "cs", "cu", "da",
|
|
"dch", "Dd", "de", "de1",
|
|
"defcolor", "dei", "dei1", "device",
|
|
"devicem", "di", "do", "ds",
|
|
"ds1", "dwh", "dt", "ec",
|
|
"ecr", "ecs", "el", "em",
|
|
"EN", "eo", "EP", "EQ",
|
|
"errprint", "ev", "evc", "ex",
|
|
"fallback", "fam", "fc", "fchar",
|
|
"fcolor", "fdeferlig", "feature", "fkern",
|
|
"fl", "flig", "fp", "fps",
|
|
"fschar", "fspacewidth", "fspecial", "ftr",
|
|
"fzoom", "gcolor", "hc", "hcode",
|
|
"hidechar", "hla", "hlm", "hpf",
|
|
"hpfa", "hpfcode", "hw", "hy",
|
|
"hylang", "hylen", "hym", "hypp",
|
|
"hys", "ie", "if", "ig",
|
|
"index", "it", "itc", "IX",
|
|
"kern", "kernafter", "kernbefore", "kernpair",
|
|
"lc", "lc_ctype", "lds", "length",
|
|
"letadj", "lf", "lg", "lhang",
|
|
"linetabs", "lnr", "lnrf", "lpfx",
|
|
"ls", "lsm", "lt",
|
|
"mediasize", "minss", "mk", "mso",
|
|
"na", "ne", "nh", "nhychar",
|
|
"nm", "nn", "nop", "nr",
|
|
"nrf", "nroff", "ns", "nx",
|
|
"open", "opena", "os", "output",
|
|
"padj", "papersize", "pc", "pev",
|
|
"pi", "PI", "pl", "pm",
|
|
"pn", "pnr", "ps",
|
|
"psbb", "pshape", "pso", "ptr",
|
|
"pvs", "rchar", "rd", "recursionlimit",
|
|
"return", "rfschar", "rhang",
|
|
"rm", "rn", "rnn", "rr",
|
|
"rs", "rt", "schar", "sentchar",
|
|
"shc", "shift", "sizes", "so",
|
|
"spacewidth", "special", "spreadwarn", "ss",
|
|
"sty", "substring", "sv", "sy",
|
|
"T&", "tc", "TE",
|
|
"TH", "tkf", "tl",
|
|
"tm", "tm1", "tmc", "tr",
|
|
"track", "transchar", "trf", "trimat",
|
|
"trin", "trnt", "troff", "TS",
|
|
"uf", "ul", "unformat", "unwatch",
|
|
"unwatchn", "vpt", "vs", "warn",
|
|
"warnscale", "watch", "watchlength", "watchn",
|
|
"wh", "while", "write", "writec",
|
|
"writem", "xflag", ".", NULL,
|
|
NULL, "text",
|
|
"Dd", "Dt", "Os", "Sh",
|
|
"Ss", "Pp", "D1", "Dl",
|
|
"Bd", "Ed", "Bl", "El",
|
|
"It", "Ad", "An", "Ap",
|
|
"Ar", "Cd", "Cm", "Dv",
|
|
"Er", "Ev", "Ex", "Fa",
|
|
"Fd", "Fl", "Fn", "Ft",
|
|
"Ic", "In", "Li", "Nd",
|
|
"Nm", "Op", "Ot", "Pa",
|
|
"Rv", "St", "Va", "Vt",
|
|
"Xr", "%A", "%B", "%D",
|
|
"%I", "%J", "%N", "%O",
|
|
"%P", "%R", "%T", "%V",
|
|
"Ac", "Ao", "Aq", "At",
|
|
"Bc", "Bf", "Bo", "Bq",
|
|
"Bsx", "Bx", "Db", "Dc",
|
|
"Do", "Dq", "Ec", "Ef",
|
|
"Em", "Eo", "Fx", "Ms",
|
|
"No", "Ns", "Nx", "Ox",
|
|
"Pc", "Pf", "Po", "Pq",
|
|
"Qc", "Ql", "Qo", "Qq",
|
|
"Re", "Rs", "Sc", "So",
|
|
"Sq", "Sm", "Sx", "Sy",
|
|
"Tn", "Ux", "Xc", "Xo",
|
|
"Fo", "Fc", "Oo", "Oc",
|
|
"Bk", "Ek", "Bt", "Hf",
|
|
"Fr", "Ud", "Lb", "Lp",
|
|
"Lk", "Mt", "Brq", "Bro",
|
|
"Brc", "%C", "Es", "En",
|
|
"Dx", "%Q", "%U", "Ta",
|
|
"Tg", NULL,
|
|
"TH", "SH", "SS", "TP",
|
|
"TQ",
|
|
"LP", "PP", "P", "IP",
|
|
"HP", "SM", "SB", "BI",
|
|
"IB", "BR", "RB", "R",
|
|
"B", "I", "IR", "RI",
|
|
"RE", "RS", "DT", "UC",
|
|
"PD", "AT", "in",
|
|
"SY", "YS", "OP",
|
|
"EX", "EE", "UR",
|
|
"UE", "MT", "ME", NULL
|
|
};
|
|
const char *const *roff_name = __roff_name;
|
|
|
|
static struct roffmac roffs[TOKEN_NONE] = {
|
|
{ roff_noarg, NULL, NULL, 0 }, /* br */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* ce */
|
|
{ roff_noarg, NULL, NULL, 0 }, /* fi */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* ft */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* ll */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* mc */
|
|
{ roff_noarg, NULL, NULL, 0 }, /* nf */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* po */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* rj */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* sp */
|
|
{ roff_manyarg, NULL, NULL, 0 }, /* ta */
|
|
{ roff_onearg, NULL, NULL, 0 }, /* ti */
|
|
{ NULL, NULL, NULL, 0 }, /* ROFF_MAX */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ab */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ad */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* af */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* aln */
|
|
{ roff_als, NULL, NULL, 0 }, /* als */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
|
|
{ roff_ds, NULL, NULL, 0 }, /* as */
|
|
{ roff_ds, NULL, NULL, 0 }, /* as1 */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* asciify */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* bd */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* blm */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* box */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* boxa */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* bp */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* BP */
|
|
{ roff_break, NULL, NULL, 0 }, /* break */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* brnl */
|
|
{ roff_noarg, NULL, NULL, 0 }, /* brp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* c2 */
|
|
{ roff_cc, NULL, NULL, 0 }, /* cc */
|
|
{ roff_insec, NULL, NULL, 0 }, /* cf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cflags */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ch */
|
|
{ roff_char, NULL, NULL, 0 }, /* char */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* chop */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* class */
|
|
{ roff_insec, NULL, NULL, 0 }, /* close */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* CL */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* color */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* composite */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* continue */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cropat */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* cu */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* da */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dch */
|
|
{ roff_Dd, NULL, NULL, 0 }, /* Dd */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* device */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* devicem */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* di */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* do */
|
|
{ roff_ds, NULL, NULL, 0 }, /* ds */
|
|
{ roff_ds, NULL, NULL, 0 }, /* ds1 */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dwh */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* dt */
|
|
{ roff_ec, NULL, NULL, 0 }, /* ec */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ecr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ecs */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* em */
|
|
{ roff_EN, NULL, NULL, 0 }, /* EN */
|
|
{ roff_eo, NULL, NULL, 0 }, /* eo */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* EP */
|
|
{ roff_EQ, NULL, NULL, 0 }, /* EQ */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* errprint */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ev */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* evc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* ex */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fallback */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fam */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* feature */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fkern */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* flig */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fps */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* fschar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ftr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hcode */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hla */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hlm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hw */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hy */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hylang */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hylen */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hym */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hypp */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* hys */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
|
|
{ roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* index */
|
|
{ roff_it, NULL, NULL, 0 }, /* it */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* itc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* IX */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kern */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lc */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lds */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* length */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* letadj */
|
|
{ roff_insec, NULL, NULL, 0 }, /* lf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lg */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lhang */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* linetabs */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lnr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lnrf */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lpfx */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ls */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* lsm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* lt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* minss */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* mk */
|
|
{ roff_insec, NULL, NULL, 0 }, /* mso */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* na */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ne */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nh */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nm */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nn */
|
|
{ roff_nop, NULL, NULL, 0 }, /* nop */
|
|
{ roff_nr, NULL, NULL, 0 }, /* nr */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* nrf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* nroff */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ns */
|
|
{ roff_insec, NULL, NULL, 0 }, /* nx */
|
|
{ roff_insec, NULL, NULL, 0 }, /* open */
|
|
{ roff_insec, NULL, NULL, 0 }, /* opena */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* os */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* output */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* padj */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* papersize */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pc */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pev */
|
|
{ roff_insec, NULL, NULL, 0 }, /* pi */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* PI */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pnr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ps */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* psbb */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* pshape */
|
|
{ roff_insec, NULL, NULL, 0 }, /* pso */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ptr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* pvs */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rd */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
|
|
{ roff_return, NULL, NULL, 0 }, /* return */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rfschar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rhang */
|
|
{ roff_rm, NULL, NULL, 0 }, /* rm */
|
|
{ roff_rn, NULL, NULL, 0 }, /* rn */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* rnn */
|
|
{ roff_rr, NULL, NULL, 0 }, /* rr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* rt */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* schar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* shc */
|
|
{ roff_shift, NULL, NULL, 0 }, /* shift */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sizes */
|
|
{ roff_so, NULL, NULL, 0 }, /* so */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* special */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ss */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sty */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* substring */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* sv */
|
|
{ roff_insec, NULL, NULL, 0 }, /* sy */
|
|
{ roff_T_, NULL, NULL, 0 }, /* T& */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* tc */
|
|
{ roff_TE, NULL, NULL, 0 }, /* TE */
|
|
{ roff_Dd, NULL, NULL, 0 }, /* TH */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tkf */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* tl */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tm */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* tmc */
|
|
{ roff_tr, NULL, NULL, 0 }, /* tr */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* track */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* transchar */
|
|
{ roff_insec, NULL, NULL, 0 }, /* trf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* trimat */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* trin */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* trnt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* troff */
|
|
{ roff_TS, NULL, NULL, 0 }, /* TS */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* uf */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* ul */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* unformat */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* vpt */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* vs */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* warn */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watch */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* watchn */
|
|
{ roff_unsupp, NULL, NULL, 0 }, /* wh */
|
|
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
|
|
{ roff_insec, NULL, NULL, 0 }, /* write */
|
|
{ roff_insec, NULL, NULL, 0 }, /* writec */
|
|
{ roff_insec, NULL, NULL, 0 }, /* writem */
|
|
{ roff_line_ignore, NULL, NULL, 0 }, /* xflag */
|
|
{ roff_cblock, NULL, NULL, 0 }, /* . */
|
|
{ roff_renamed, NULL, NULL, 0 },
|
|
{ roff_userdef, NULL, NULL, 0 }
|
|
};
|
|
|
|
/* Array of injected predefined strings. */
|
|
#define PREDEFS_MAX 38
|
|
static const struct predef predefs[PREDEFS_MAX] = {
|
|
#include "predefs.in"
|
|
};
|
|
|
|
static int roffce_lines; /* number of input lines to center */
|
|
static struct roff_node *roffce_node; /* active request */
|
|
static int roffit_lines; /* number of lines to delay */
|
|
static char *roffit_macro; /* nil-terminated macro line */
|
|
|
|
|
|
/* --- request table ------------------------------------------------------ */
|
|
|
|
struct ohash *
|
|
roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
|
|
{
|
|
struct ohash *htab;
|
|
struct roffreq *req;
|
|
enum roff_tok tok;
|
|
size_t sz;
|
|
unsigned int slot;
|
|
|
|
htab = mandoc_malloc(sizeof(*htab));
|
|
mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
|
|
|
|
for (tok = mintok; tok < maxtok; tok++) {
|
|
if (roff_name[tok] == NULL)
|
|
continue;
|
|
sz = strlen(roff_name[tok]);
|
|
req = mandoc_malloc(sizeof(*req) + sz + 1);
|
|
req->tok = tok;
|
|
memcpy(req->name, roff_name[tok], sz + 1);
|
|
slot = ohash_qlookup(htab, req->name);
|
|
ohash_insert(htab, slot, req);
|
|
}
|
|
return htab;
|
|
}
|
|
|
|
void
|
|
roffhash_free(struct ohash *htab)
|
|
{
|
|
struct roffreq *req;
|
|
unsigned int slot;
|
|
|
|
if (htab == NULL)
|
|
return;
|
|
for (req = ohash_first(htab, &slot); req != NULL;
|
|
req = ohash_next(htab, &slot))
|
|
free(req);
|
|
ohash_delete(htab);
|
|
free(htab);
|
|
}
|
|
|
|
enum roff_tok
|
|
roffhash_find(struct ohash *htab, const char *name, size_t sz)
|
|
{
|
|
struct roffreq *req;
|
|
const char *end;
|
|
|
|
if (sz) {
|
|
end = name + sz;
|
|
req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
|
|
} else
|
|
req = ohash_find(htab, ohash_qlookup(htab, name));
|
|
return req == NULL ? TOKEN_NONE : req->tok;
|
|
}
|
|
|
|
/* --- stack of request blocks -------------------------------------------- */
|
|
|
|
/*
|
|
* Pop the current node off of the stack of roff instructions currently
|
|
* pending. Return 1 if it is a loop or 0 otherwise.
|
|
*/
|
|
static int
|
|
roffnode_pop(struct roff *r)
|
|
{
|
|
struct roffnode *p;
|
|
int inloop;
|
|
|
|
p = r->last;
|
|
inloop = p->tok == ROFF_while;
|
|
r->last = p->parent;
|
|
free(p->name);
|
|
free(p->end);
|
|
free(p);
|
|
return inloop;
|
|
}
|
|
|
|
/*
|
|
* Push a roff node onto the instruction stack. This must later be
|
|
* removed with roffnode_pop().
|
|
*/
|
|
static void
|
|
roffnode_push(struct roff *r, enum roff_tok 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;
|
|
}
|
|
|
|
/* --- roff parser state data management ---------------------------------- */
|
|
|
|
static void
|
|
roff_free1(struct roff *r)
|
|
{
|
|
int i;
|
|
|
|
tbl_free(r->first_tbl);
|
|
r->first_tbl = r->last_tbl = r->tbl = NULL;
|
|
|
|
eqn_free(r->last_eqn);
|
|
r->last_eqn = r->eqn = NULL;
|
|
|
|
while (r->mstackpos >= 0)
|
|
roff_userret(r);
|
|
|
|
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->rentab);
|
|
roff_freestr(r->xmbtab);
|
|
r->strtab = r->rentab = 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->options |= MPARSE_COMMENT;
|
|
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->control = '\0';
|
|
r->escape = '\\';
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
roffit_lines = 0;
|
|
roffit_macro = NULL;
|
|
}
|
|
|
|
void
|
|
roff_free(struct roff *r)
|
|
{
|
|
int i;
|
|
|
|
roff_free1(r);
|
|
for (i = 0; i < r->mstacksz; i++)
|
|
free(r->mstack[i].argv);
|
|
free(r->mstack);
|
|
roffhash_free(r->reqtab);
|
|
free(r);
|
|
}
|
|
|
|
struct roff *
|
|
roff_alloc(int options)
|
|
{
|
|
struct roff *r;
|
|
|
|
r = mandoc_calloc(1, sizeof(struct roff));
|
|
r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
|
|
r->options = options | MPARSE_COMMENT;
|
|
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
|
|
r->mstackpos = -1;
|
|
r->rstackpos = -1;
|
|
r->escape = '\\';
|
|
return r;
|
|
}
|
|
|
|
/* --- syntax tree state data management ---------------------------------- */
|
|
|
|
static void
|
|
roff_man_free1(struct roff_man *man)
|
|
{
|
|
if (man->meta.first != NULL)
|
|
roff_node_delete(man, man->meta.first);
|
|
free(man->meta.msec);
|
|
free(man->meta.vol);
|
|
free(man->meta.os);
|
|
free(man->meta.arch);
|
|
free(man->meta.title);
|
|
free(man->meta.name);
|
|
free(man->meta.date);
|
|
free(man->meta.sodest);
|
|
}
|
|
|
|
void
|
|
roff_state_reset(struct roff_man *man)
|
|
{
|
|
man->last = man->meta.first;
|
|
man->last_es = NULL;
|
|
man->flags = 0;
|
|
man->lastsec = man->lastnamed = SEC_NONE;
|
|
man->next = ROFF_NEXT_CHILD;
|
|
roff_setreg(man->roff, "nS", 0, '=');
|
|
}
|
|
|
|
static void
|
|
roff_man_alloc1(struct roff_man *man)
|
|
{
|
|
memset(&man->meta, 0, sizeof(man->meta));
|
|
man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
|
|
man->meta.first->type = ROFFT_ROOT;
|
|
man->meta.macroset = MACROSET_NONE;
|
|
roff_state_reset(man);
|
|
}
|
|
|
|
void
|
|
roff_man_reset(struct roff_man *man)
|
|
{
|
|
roff_man_free1(man);
|
|
roff_man_alloc1(man);
|
|
}
|
|
|
|
void
|
|
roff_man_free(struct roff_man *man)
|
|
{
|
|
roff_man_free1(man);
|
|
free(man);
|
|
}
|
|
|
|
struct roff_man *
|
|
roff_man_alloc(struct roff *roff, const char *os_s, int quick)
|
|
{
|
|
struct roff_man *man;
|
|
|
|
man = mandoc_calloc(1, sizeof(*man));
|
|
man->roff = roff;
|
|
man->os_s = os_s;
|
|
man->quick = quick;
|
|
roff_man_alloc1(man);
|
|
roff->man = man;
|
|
return man;
|
|
}
|
|
|
|
/* --- syntax tree handling ----------------------------------------------- */
|
|
|
|
struct roff_node *
|
|
roff_node_alloc(struct roff_man *man, int line, int pos,
|
|
enum roff_type type, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = mandoc_calloc(1, sizeof(*n));
|
|
n->line = line;
|
|
n->pos = pos;
|
|
n->tok = tok;
|
|
n->type = type;
|
|
n->sec = man->lastsec;
|
|
|
|
if (man->flags & MDOC_SYNOPSIS)
|
|
n->flags |= NODE_SYNPRETTY;
|
|
else
|
|
n->flags &= ~NODE_SYNPRETTY;
|
|
if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
|
|
n->flags |= NODE_NOFILL;
|
|
else
|
|
n->flags &= ~NODE_NOFILL;
|
|
if (man->flags & MDOC_NEWLINE)
|
|
n->flags |= NODE_LINE;
|
|
man->flags &= ~MDOC_NEWLINE;
|
|
|
|
return n;
|
|
}
|
|
|
|
void
|
|
roff_node_append(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
switch (man->next) {
|
|
case ROFF_NEXT_SIBLING:
|
|
if (man->last->next != NULL) {
|
|
n->next = man->last->next;
|
|
man->last->next->prev = n;
|
|
} else
|
|
man->last->parent->last = n;
|
|
man->last->next = n;
|
|
n->prev = man->last;
|
|
n->parent = man->last->parent;
|
|
break;
|
|
case ROFF_NEXT_CHILD:
|
|
if (man->last->child != NULL) {
|
|
n->next = man->last->child;
|
|
man->last->child->prev = n;
|
|
} else
|
|
man->last->last = n;
|
|
man->last->child = n;
|
|
n->parent = man->last;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
man->last = n;
|
|
|
|
switch (n->type) {
|
|
case ROFFT_HEAD:
|
|
n->parent->head = n;
|
|
break;
|
|
case ROFFT_BODY:
|
|
if (n->end != ENDBODY_NOT)
|
|
return;
|
|
n->parent->body = n;
|
|
break;
|
|
case ROFFT_TAIL:
|
|
n->parent->tail = n;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Copy over the normalised-data pointer of our parent. Not
|
|
* everybody has one, but copying a null pointer is fine.
|
|
*/
|
|
|
|
n->norm = n->parent->norm;
|
|
assert(n->parent->type == ROFFT_BLOCK);
|
|
}
|
|
|
|
void
|
|
roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
|
|
n->string = roff_strdup(man->roff, word);
|
|
roff_node_append(man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
void
|
|
roff_word_append(struct roff_man *man, const char *word)
|
|
{
|
|
struct roff_node *n;
|
|
char *addstr, *newstr;
|
|
|
|
n = man->last;
|
|
addstr = roff_strdup(man->roff, word);
|
|
mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
|
|
free(addstr);
|
|
free(n->string);
|
|
n->string = newstr;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
void
|
|
roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
|
|
roff_node_append(man, n);
|
|
man->next = ROFF_NEXT_CHILD;
|
|
return n;
|
|
}
|
|
|
|
static void
|
|
roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
|
|
{
|
|
struct roff_node *n;
|
|
struct tbl_span *span;
|
|
|
|
if (man->meta.macroset == MACROSET_MAN)
|
|
man_breakscope(man, ROFF_TS);
|
|
while ((span = tbl_span(tbl)) != NULL) {
|
|
n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
|
|
n->span = span;
|
|
roff_node_append(man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
}
|
|
|
|
void
|
|
roff_node_unlink(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
/* Adjust siblings. */
|
|
|
|
if (n->prev)
|
|
n->prev->next = n->next;
|
|
if (n->next)
|
|
n->next->prev = n->prev;
|
|
|
|
/* Adjust parent. */
|
|
|
|
if (n->parent != NULL) {
|
|
if (n->parent->child == n)
|
|
n->parent->child = n->next;
|
|
if (n->parent->last == n)
|
|
n->parent->last = n->prev;
|
|
}
|
|
|
|
/* Adjust parse point. */
|
|
|
|
if (man == NULL)
|
|
return;
|
|
if (man->last == n) {
|
|
if (n->prev == NULL) {
|
|
man->last = n->parent;
|
|
man->next = ROFF_NEXT_CHILD;
|
|
} else {
|
|
man->last = n->prev;
|
|
man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
}
|
|
if (man->meta.first == n)
|
|
man->meta.first = NULL;
|
|
}
|
|
|
|
void
|
|
roff_node_relink(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
roff_node_unlink(man, n);
|
|
n->prev = n->next = NULL;
|
|
roff_node_append(man, n);
|
|
}
|
|
|
|
void
|
|
roff_node_free(struct roff_node *n)
|
|
{
|
|
|
|
if (n->args != NULL)
|
|
mdoc_argv_free(n->args);
|
|
if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
|
|
free(n->norm);
|
|
eqn_box_free(n->eqn);
|
|
free(n->string);
|
|
free(n->tag);
|
|
free(n);
|
|
}
|
|
|
|
void
|
|
roff_node_delete(struct roff_man *man, struct roff_node *n)
|
|
{
|
|
|
|
while (n->child != NULL)
|
|
roff_node_delete(man, n->child);
|
|
roff_node_unlink(man, n);
|
|
roff_node_free(n);
|
|
}
|
|
|
|
int
|
|
roff_node_transparent(struct roff_node *n)
|
|
{
|
|
if (n == NULL)
|
|
return 0;
|
|
if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
|
|
return 1;
|
|
return roff_tok_transparent(n->tok);
|
|
}
|
|
|
|
int
|
|
roff_tok_transparent(enum roff_tok tok)
|
|
{
|
|
switch (tok) {
|
|
case ROFF_ft:
|
|
case ROFF_ll:
|
|
case ROFF_mc:
|
|
case ROFF_po:
|
|
case ROFF_ta:
|
|
case MDOC_Db:
|
|
case MDOC_Es:
|
|
case MDOC_Sm:
|
|
case MDOC_Tg:
|
|
case MAN_DT:
|
|
case MAN_UC:
|
|
case MAN_PD:
|
|
case MAN_AT:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_child(struct roff_node *n)
|
|
{
|
|
for (n = n->child; roff_node_transparent(n); n = n->next)
|
|
continue;
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_prev(struct roff_node *n)
|
|
{
|
|
do {
|
|
n = n->prev;
|
|
} while (roff_node_transparent(n));
|
|
return n;
|
|
}
|
|
|
|
struct roff_node *
|
|
roff_node_next(struct roff_node *n)
|
|
{
|
|
do {
|
|
n = n->next;
|
|
} while (roff_node_transparent(n));
|
|
return n;
|
|
}
|
|
|
|
void
|
|
deroff(char **dest, const struct roff_node *n)
|
|
{
|
|
char *cp;
|
|
size_t sz;
|
|
|
|
if (n->string == NULL) {
|
|
for (n = n->child; n != NULL; n = n->next)
|
|
deroff(dest, n);
|
|
return;
|
|
}
|
|
|
|
/* Skip leading whitespace. */
|
|
|
|
for (cp = n->string; *cp != '\0'; cp++) {
|
|
if (cp[0] == '\\' && cp[1] != '\0' &&
|
|
strchr(" %&0^|~", cp[1]) != NULL)
|
|
cp++;
|
|
else if ( ! isspace((unsigned char)*cp))
|
|
break;
|
|
}
|
|
|
|
/* Skip trailing backslash. */
|
|
|
|
sz = strlen(cp);
|
|
if (sz > 0 && cp[sz - 1] == '\\')
|
|
sz--;
|
|
|
|
/* Skip trailing whitespace. */
|
|
|
|
for (; sz; sz--)
|
|
if ( ! isspace((unsigned char)cp[sz-1]))
|
|
break;
|
|
|
|
/* Skip empty strings. */
|
|
|
|
if (sz == 0)
|
|
return;
|
|
|
|
if (*dest == NULL) {
|
|
*dest = mandoc_strndup(cp, sz);
|
|
return;
|
|
}
|
|
|
|
mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
|
|
free(*dest);
|
|
*dest = cp;
|
|
}
|
|
|
|
/* --- main functions of the roff parser ---------------------------------- */
|
|
|
|
/*
|
|
* In the current line, expand escape sequences that produce parsable
|
|
* input text. Also check the syntax of the remaining escape sequences,
|
|
* which typically produce output glyphs or change formatter state.
|
|
*/
|
|
static int
|
|
roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
|
|
{
|
|
struct mctx *ctx; /* current macro call context */
|
|
char ubuf[24]; /* buffer to print the number */
|
|
struct roff_node *n; /* used for header comments */
|
|
const char *start; /* start of the string to process */
|
|
char *stesc; /* start of an escape sequence ('\\') */
|
|
const char *esct; /* type of esccape sequence */
|
|
char *ep; /* end of comment string */
|
|
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 */
|
|
size_t asz; /* length of the replacement */
|
|
size_t rsz; /* length of the rest of the string */
|
|
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 */
|
|
int quote_args; /* true for \\$@, false for \\$* */
|
|
int done; /* no more input available */
|
|
int deftype; /* type of definition to paste */
|
|
int rcsid; /* kind of RCS id seen */
|
|
enum mandocerr err; /* for escape sequence problems */
|
|
char sign; /* increment number register */
|
|
char term; /* character terminating the escape */
|
|
|
|
/* Search forward for comments. */
|
|
|
|
done = 0;
|
|
start = buf->buf + pos;
|
|
for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
|
|
if (stesc[0] != newesc || stesc[1] == '\0')
|
|
continue;
|
|
stesc++;
|
|
if (*stesc != '"' && *stesc != '#')
|
|
continue;
|
|
|
|
/* Comment found, look for RCS id. */
|
|
|
|
rcsid = 0;
|
|
if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
|
|
rcsid = 1 << MANDOC_OS_OPENBSD;
|
|
cp += 8;
|
|
} else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
|
|
rcsid = 1 << MANDOC_OS_NETBSD;
|
|
cp += 7;
|
|
}
|
|
if (cp != NULL &&
|
|
isalnum((unsigned char)*cp) == 0 &&
|
|
strchr(cp, '$') != NULL) {
|
|
if (r->man->meta.rcsids & rcsid)
|
|
mandoc_msg(MANDOCERR_RCS_REP, ln,
|
|
(int)(stesc - buf->buf) + 1,
|
|
"%s", stesc + 1);
|
|
r->man->meta.rcsids |= rcsid;
|
|
}
|
|
|
|
/* Handle trailing whitespace. */
|
|
|
|
ep = strchr(stesc--, '\0') - 1;
|
|
if (*ep == '\n') {
|
|
done = 1;
|
|
ep--;
|
|
}
|
|
if (*ep == ' ' || *ep == '\t')
|
|
mandoc_msg(MANDOCERR_SPACE_EOL,
|
|
ln, (int)(ep - buf->buf), NULL);
|
|
|
|
/*
|
|
* Save comments preceding the title macro
|
|
* in the syntax tree.
|
|
*/
|
|
|
|
if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
|
|
while (*ep == ' ' || *ep == '\t')
|
|
ep--;
|
|
ep[1] = '\0';
|
|
n = roff_node_alloc(r->man,
|
|
ln, stesc + 1 - buf->buf,
|
|
ROFFT_COMMENT, TOKEN_NONE);
|
|
n->string = mandoc_strdup(stesc + 2);
|
|
roff_node_append(r->man, n);
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
/* Line continuation with comment. */
|
|
|
|
if (stesc[1] == '#') {
|
|
*stesc = '\0';
|
|
return ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/* Discard normal comments. */
|
|
|
|
while (stesc > start && stesc[-1] == ' ' &&
|
|
(stesc == start + 1 || stesc[-2] != '\\'))
|
|
stesc--;
|
|
*stesc = '\0';
|
|
break;
|
|
}
|
|
if (stesc == start)
|
|
return ROFF_CONT;
|
|
stesc--;
|
|
|
|
/* Notice the end of the input. */
|
|
|
|
if (*stesc == '\n') {
|
|
*stesc-- = '\0';
|
|
done = 1;
|
|
}
|
|
|
|
expand_count = 0;
|
|
while (stesc >= start) {
|
|
if (*stesc != newesc) {
|
|
|
|
/*
|
|
* If we have a non-standard escape character,
|
|
* escape literal backslashes because all
|
|
* processing in subsequent functions uses
|
|
* the standard escaping rules.
|
|
*/
|
|
|
|
if (newesc != ASCII_ESC && *stesc == '\\') {
|
|
*stesc = '\0';
|
|
buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
|
|
buf->buf, stesc + 1) + 1;
|
|
start = nbuf + pos;
|
|
stesc = nbuf + (stesc - buf->buf);
|
|
free(buf->buf);
|
|
buf->buf = nbuf;
|
|
}
|
|
|
|
/* Search backwards for the next escape. */
|
|
|
|
stesc--;
|
|
continue;
|
|
}
|
|
|
|
/* If it is escaped, skip it. */
|
|
|
|
for (cp = stesc - 1; cp >= start; cp--)
|
|
if (*cp != r->escape)
|
|
break;
|
|
|
|
if ((stesc - cp) % 2 == 0) {
|
|
while (stesc > cp)
|
|
*stesc-- = '\\';
|
|
continue;
|
|
} else if (stesc[1] != '\0') {
|
|
*stesc = '\\';
|
|
} else {
|
|
*stesc-- = '\0';
|
|
if (done)
|
|
continue;
|
|
else
|
|
return ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/* Decide whether to expand or to check only. */
|
|
|
|
term = '\0';
|
|
cp = stesc + 1;
|
|
if (*cp == 'E')
|
|
cp++;
|
|
esct = cp;
|
|
switch (*esct) {
|
|
case '*':
|
|
case '$':
|
|
res = NULL;
|
|
break;
|
|
case 'B':
|
|
case 'w':
|
|
term = cp[1];
|
|
/* FALLTHROUGH */
|
|
case 'n':
|
|
sign = cp[1];
|
|
if (sign == '+' || sign == '-')
|
|
cp++;
|
|
res = ubuf;
|
|
break;
|
|
default:
|
|
err = MANDOCERR_OK;
|
|
switch(mandoc_escape(&cp, &stnam, &inaml)) {
|
|
case ESCAPE_SPECIAL:
|
|
if (mchars_spec2cp(stnam, inaml) >= 0)
|
|
break;
|
|
/* FALLTHROUGH */
|
|
case ESCAPE_ERROR:
|
|
err = MANDOCERR_ESC_BAD;
|
|
break;
|
|
case ESCAPE_UNDEF:
|
|
err = MANDOCERR_ESC_UNDEF;
|
|
break;
|
|
case ESCAPE_UNSUPP:
|
|
err = MANDOCERR_ESC_UNSUPP;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (err != MANDOCERR_OK)
|
|
mandoc_msg(err, ln, (int)(stesc - buf->buf),
|
|
"%.*s", (int)(cp - stesc), stesc);
|
|
stesc--;
|
|
continue;
|
|
}
|
|
|
|
if (EXPAND_LIMIT < ++expand_count) {
|
|
mandoc_msg(MANDOCERR_ROFFLOOP,
|
|
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, ln,
|
|
(int)(stesc - buf->buf), "%s", stesc);
|
|
arg_complete = 0;
|
|
break;
|
|
}
|
|
if (maxl == 0 && *cp == term) {
|
|
cp++;
|
|
break;
|
|
}
|
|
if (*cp++ != '\\' || *esct != 'w') {
|
|
naml++;
|
|
continue;
|
|
}
|
|
switch (mandoc_escape(&cp, NULL, NULL)) {
|
|
case ESCAPE_SPECIAL:
|
|
case ESCAPE_UNICODE:
|
|
case ESCAPE_NUMBERED:
|
|
case ESCAPE_UNDEF:
|
|
case ESCAPE_OVERSTRIKE:
|
|
naml++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Retrieve the replacement string; if it is
|
|
* undefined, resume searching for escapes.
|
|
*/
|
|
|
|
switch (*esct) {
|
|
case '*':
|
|
if (arg_complete) {
|
|
deftype = ROFFDEF_USER | ROFFDEF_PRE;
|
|
res = roff_getstrn(r, stnam, naml, &deftype);
|
|
|
|
/*
|
|
* If not overriden, let \*(.T
|
|
* through to the formatters.
|
|
*/
|
|
|
|
if (res == NULL && naml == 2 &&
|
|
stnam[0] == '.' && stnam[1] == 'T') {
|
|
roff_setstrn(&r->strtab,
|
|
".T", 2, NULL, 0, 0);
|
|
stesc--;
|
|
continue;
|
|
}
|
|
}
|
|
break;
|
|
case '$':
|
|
if (r->mstackpos < 0) {
|
|
mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
|
|
(int)(stesc - buf->buf), "%.3s", stesc);
|
|
break;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
npos = esct[1] - '1';
|
|
if (npos >= 0 && npos <= 8) {
|
|
res = npos < ctx->argc ?
|
|
ctx->argv[npos] : "";
|
|
break;
|
|
}
|
|
if (esct[1] == '*')
|
|
quote_args = 0;
|
|
else if (esct[1] == '@')
|
|
quote_args = 1;
|
|
else {
|
|
mandoc_msg(MANDOCERR_ARG_NONUM, ln,
|
|
(int)(stesc - buf->buf), "%.3s", stesc);
|
|
break;
|
|
}
|
|
asz = 0;
|
|
for (npos = 0; npos < ctx->argc; npos++) {
|
|
if (npos)
|
|
asz++; /* blank */
|
|
if (quote_args)
|
|
asz += 2; /* quotes */
|
|
asz += strlen(ctx->argv[npos]);
|
|
}
|
|
if (asz != 3) {
|
|
rsz = buf->sz - (stesc - buf->buf) - 3;
|
|
if (asz < 3)
|
|
memmove(stesc + asz, stesc + 3, rsz);
|
|
buf->sz += asz - 3;
|
|
nbuf = mandoc_realloc(buf->buf, buf->sz);
|
|
start = nbuf + pos;
|
|
stesc = nbuf + (stesc - buf->buf);
|
|
buf->buf = nbuf;
|
|
if (asz > 3)
|
|
memmove(stesc + asz, stesc + 3, rsz);
|
|
}
|
|
for (npos = 0; npos < ctx->argc; npos++) {
|
|
if (npos)
|
|
*stesc++ = ' ';
|
|
if (quote_args)
|
|
*stesc++ = '"';
|
|
cp = ctx->argv[npos];
|
|
while (*cp != '\0')
|
|
*stesc++ = *cp++;
|
|
if (quote_args)
|
|
*stesc++ = '"';
|
|
}
|
|
continue;
|
|
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, sign));
|
|
else
|
|
ubuf[0] = '\0';
|
|
break;
|
|
case 'w':
|
|
/* use even incomplete args */
|
|
(void)snprintf(ubuf, sizeof(ubuf), "%d",
|
|
24 * (int)naml);
|
|
break;
|
|
}
|
|
|
|
if (res == NULL) {
|
|
if (*esct == '*')
|
|
mandoc_msg(MANDOCERR_STR_UNDEF,
|
|
ln, (int)(stesc - buf->buf),
|
|
"%.*s", (int)naml, stnam);
|
|
res = "";
|
|
} else if (buf->sz + strlen(res) > SHRT_MAX) {
|
|
mandoc_msg(MANDOCERR_ROFFLOOP,
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Parse a quoted or unquoted roff-style request or macro argument.
|
|
* Return a pointer to the parsed argument, which is either the original
|
|
* pointer or advanced by one byte in case the argument is quoted.
|
|
* NUL-terminate the argument in place.
|
|
* Collapse pairs of quotes inside quoted arguments.
|
|
* Advance the argument pointer to the next argument,
|
|
* or to the NUL byte terminating the argument line.
|
|
*/
|
|
char *
|
|
roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
|
|
{
|
|
struct buf buf;
|
|
char *cp, *start;
|
|
int newesc, pairs, quoted, white;
|
|
|
|
/* Quoting can only start with a new word. */
|
|
start = *cpp;
|
|
quoted = 0;
|
|
if ('"' == *start) {
|
|
quoted = 1;
|
|
start++;
|
|
}
|
|
|
|
newesc = pairs = white = 0;
|
|
for (cp = start; '\0' != *cp; cp++) {
|
|
|
|
/*
|
|
* Move the following text left
|
|
* after quoted quotes and after "\\" and "\t".
|
|
*/
|
|
if (pairs)
|
|
cp[-pairs] = cp[0];
|
|
|
|
if ('\\' == cp[0]) {
|
|
/*
|
|
* In copy mode, translate double to single
|
|
* backslashes and backslash-t to literal tabs.
|
|
*/
|
|
switch (cp[1]) {
|
|
case 'a':
|
|
case 't':
|
|
cp[-pairs] = '\t';
|
|
pairs++;
|
|
cp++;
|
|
break;
|
|
case '\\':
|
|
newesc = 1;
|
|
cp[-pairs] = ASCII_ESC;
|
|
pairs++;
|
|
cp++;
|
|
break;
|
|
case ' ':
|
|
/* Skip escaped blanks. */
|
|
if (0 == quoted)
|
|
cp++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (0 == quoted) {
|
|
if (' ' == cp[0]) {
|
|
/* Unescaped blanks end unquoted args. */
|
|
white = 1;
|
|
break;
|
|
}
|
|
} else if ('"' == cp[0]) {
|
|
if ('"' == cp[1]) {
|
|
/* Quoted quotes collapse. */
|
|
pairs++;
|
|
cp++;
|
|
} else {
|
|
/* Unquoted quotes end quoted args. */
|
|
quoted = 2;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Quoted argument without a closing quote. */
|
|
if (1 == quoted)
|
|
mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
|
|
|
|
/* NUL-terminate this argument and move to the next one. */
|
|
if (pairs)
|
|
cp[-pairs] = '\0';
|
|
if ('\0' != *cp) {
|
|
*cp++ = '\0';
|
|
while (' ' == *cp)
|
|
cp++;
|
|
}
|
|
*pos += (int)(cp - start) + (quoted ? 1 : 0);
|
|
*cpp = cp;
|
|
|
|
if ('\0' == *cp && (white || ' ' == cp[-1]))
|
|
mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
|
|
|
|
start = mandoc_strdup(start);
|
|
if (newesc == 0)
|
|
return start;
|
|
|
|
buf.buf = start;
|
|
buf.sz = strlen(start) + 1;
|
|
buf.next = NULL;
|
|
if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
|
|
free(buf.buf);
|
|
buf.buf = mandoc_strdup("");
|
|
}
|
|
return buf.buf;
|
|
}
|
|
|
|
|
|
/*
|
|
* Process text streams.
|
|
*/
|
|
static int
|
|
roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
|
|
{
|
|
size_t sz;
|
|
const char *start;
|
|
char *p;
|
|
int isz;
|
|
enum mandoc_esc esc;
|
|
|
|
/* 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;
|
|
|
|
if (roffce_node != NULL && buf->buf[pos] != '\0') {
|
|
if (roffce_lines < 1) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
} else
|
|
roffce_lines--;
|
|
}
|
|
|
|
/* Convert all breakable hyphens into ASCII_HYPH. */
|
|
|
|
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;
|
|
while (*p == '-')
|
|
p++;
|
|
continue;
|
|
} else if (p == start) {
|
|
p++;
|
|
continue;
|
|
}
|
|
|
|
if (isalpha((unsigned char)p[-1]) &&
|
|
isalpha((unsigned char)p[1]))
|
|
*p = ASCII_HYPH;
|
|
p++;
|
|
}
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
int
|
|
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
|
|
{
|
|
enum roff_tok t;
|
|
int 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;
|
|
|
|
if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
|
|
(r->man->flags & ROFF_NOFILL) == 0 &&
|
|
strchr(" .\\", buf->buf[pos]) == NULL &&
|
|
buf->buf[pos] != r->control &&
|
|
strcspn(buf->buf, " ") < 80)
|
|
mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
|
|
"%.20s...", buf->buf + pos);
|
|
|
|
/* 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_expand(r, buf, ln, pos, r->escape);
|
|
if ((e & ROFF_MASK) == 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;
|
|
e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
|
|
if ((e & ROFF_MASK) == ROFF_IGN)
|
|
return e;
|
|
e &= ~ROFF_MASK;
|
|
} else
|
|
e = ROFF_IGN;
|
|
if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
|
|
eqn_read(r->eqn, buf->buf + ppos);
|
|
return e;
|
|
}
|
|
if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
|
|
tbl_read(r->tbl, ln, buf->buf, ppos);
|
|
roff_addtbl(r->man, ln, r->tbl);
|
|
return e;
|
|
}
|
|
if ( ! ctl) {
|
|
r->options &= ~MPARSE_COMMENT;
|
|
return roff_parsetext(r, buf, pos, offs) | e;
|
|
}
|
|
|
|
/* Skip empty request lines. */
|
|
|
|
if (buf->buf[pos] == '"') {
|
|
mandoc_msg(MANDOCERR_COMMENT_BAD, 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;
|
|
return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
|
|
}
|
|
|
|
/* No scope is open. This is a new request or macro. */
|
|
|
|
r->options &= ~MPARSE_COMMENT;
|
|
spos = pos;
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
/* Tables ignore most macros. */
|
|
|
|
if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
|
|
t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
|
|
mandoc_msg(MANDOCERR_TBLMACRO,
|
|
ln, pos, "%s", buf->buf + spos);
|
|
if (t != TOKEN_NONE)
|
|
return ROFF_IGN;
|
|
while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
|
|
pos++;
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
tbl_read(r->tbl, ln, buf->buf, pos);
|
|
roff_addtbl(r->man, ln, r->tbl);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/* For now, let high level macros abort .ce mode. */
|
|
|
|
if (ctl && roffce_node != NULL &&
|
|
(t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
|
|
t == ROFF_TH || t == ROFF_TS)) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
}
|
|
|
|
/*
|
|
* This is neither a roff request nor a user-defined macro.
|
|
* Let the standard macro set parsers handle it.
|
|
*/
|
|
|
|
if (t == TOKEN_NONE)
|
|
return ROFF_CONT;
|
|
|
|
/* Execute a roff request or a user defined macro. */
|
|
|
|
return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
|
|
}
|
|
|
|
/*
|
|
* Internal interface function to tell the roff parser that execution
|
|
* of the current macro ended. This is required because macro
|
|
* definitions usually do not end with a .return request.
|
|
*/
|
|
void
|
|
roff_userret(struct roff *r)
|
|
{
|
|
struct mctx *ctx;
|
|
int i;
|
|
|
|
assert(r->mstackpos >= 0);
|
|
ctx = r->mstack + r->mstackpos;
|
|
for (i = 0; i < ctx->argc; i++)
|
|
free(ctx->argv[i]);
|
|
ctx->argc = 0;
|
|
r->mstackpos--;
|
|
}
|
|
|
|
void
|
|
roff_endparse(struct roff *r)
|
|
{
|
|
if (r->last != NULL)
|
|
mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
|
|
r->last->col, "%s", roff_name[r->last->tok]);
|
|
|
|
if (r->eqn != NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOEND,
|
|
r->eqn->node->line, r->eqn->node->pos, "EQ");
|
|
eqn_parse(r->eqn);
|
|
r->eqn = NULL;
|
|
}
|
|
|
|
if (r->tbl != NULL) {
|
|
tbl_end(r->tbl, 1);
|
|
r->tbl = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 roff_tok
|
|
roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
|
|
{
|
|
char *cp;
|
|
const char *mac;
|
|
size_t maclen;
|
|
int deftype;
|
|
enum roff_tok t;
|
|
|
|
cp = buf + *pos;
|
|
|
|
if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
|
|
return TOKEN_NONE;
|
|
|
|
mac = cp;
|
|
maclen = roff_getname(r, &cp, ln, ppos);
|
|
|
|
deftype = ROFFDEF_USER | ROFFDEF_REN;
|
|
r->current_string = roff_getstrn(r, mac, maclen, &deftype);
|
|
switch (deftype) {
|
|
case ROFFDEF_USER:
|
|
t = ROFF_USERDEF;
|
|
break;
|
|
case ROFFDEF_REN:
|
|
t = ROFF_RENAMED;
|
|
break;
|
|
default:
|
|
t = roffhash_find(r->reqtab, mac, maclen);
|
|
break;
|
|
}
|
|
if (t != TOKEN_NONE)
|
|
*pos = cp - buf;
|
|
else if (deftype == ROFFDEF_UNDEF) {
|
|
/* Using an undefined macro defines it to be empty. */
|
|
roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
|
|
roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
|
|
}
|
|
return t;
|
|
}
|
|
|
|
/* --- handling of request blocks ----------------------------------------- */
|
|
|
|
/*
|
|
* Close a macro definition block or an "ignore" block.
|
|
*/
|
|
static int
|
|
roff_cblock(ROFF_ARGS)
|
|
{
|
|
int rr;
|
|
|
|
if (r->last == NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_am:
|
|
case ROFF_ami:
|
|
case ROFF_de:
|
|
case ROFF_dei:
|
|
case ROFF_ig:
|
|
break;
|
|
case ROFF_am1:
|
|
case ROFF_de1:
|
|
/* Remapped in roff_block(). */
|
|
abort();
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
roffnode_pop(r);
|
|
roffnode_cleanscope(r);
|
|
|
|
/*
|
|
* If a conditional block with braces is still open,
|
|
* check for "\}" block end markers.
|
|
*/
|
|
|
|
if (r->last != NULL && r->last->endspan < 0) {
|
|
rr = 1; /* If arguments follow "\}", warn about them. */
|
|
roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
}
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
".. %s", buf->buf + pos);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Pop all nodes ending at the end of the current input line.
|
|
* Return the number of loops ended.
|
|
*/
|
|
static int
|
|
roffnode_cleanscope(struct roff *r)
|
|
{
|
|
int inloop;
|
|
|
|
inloop = 0;
|
|
while (r->last != NULL && r->last->endspan > 0) {
|
|
if (--r->last->endspan != 0)
|
|
break;
|
|
inloop += roffnode_pop(r);
|
|
}
|
|
return inloop;
|
|
}
|
|
|
|
/*
|
|
* Handle the closing "\}" of a conditional block.
|
|
* Apart from generating warnings, this only pops nodes.
|
|
* Return the number of loops ended.
|
|
*/
|
|
static int
|
|
roff_ccond(struct roff *r, int ln, int ppos)
|
|
{
|
|
if (NULL == r->last) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
switch (r->last->tok) {
|
|
case ROFF_el:
|
|
case ROFF_ie:
|
|
case ROFF_if:
|
|
case ROFF_while:
|
|
break;
|
|
default:
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
if (r->last->endspan > -1) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
|
|
return 0;
|
|
}
|
|
|
|
return roffnode_pop(r) + roffnode_cleanscope(r);
|
|
}
|
|
|
|
static int
|
|
roff_block(ROFF_ARGS)
|
|
{
|
|
const char *name, *value;
|
|
char *call, *cp, *iname, *rname;
|
|
size_t csz, namesz, rsz;
|
|
int deftype;
|
|
|
|
/* 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)) {
|
|
deftype = ROFFDEF_USER;
|
|
name = roff_getstrn(r, iname, namesz, &deftype);
|
|
if (name == NULL) {
|
|
mandoc_msg(MANDOCERR_STR_UNDEF,
|
|
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,
|
|
ln, ppos, "%s", roff_name[tok]);
|
|
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);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
} else if (tok == ROFF_am || tok == ROFF_ami) {
|
|
deftype = ROFFDEF_ANY;
|
|
value = roff_getstrn(r, iname, namesz, &deftype);
|
|
switch (deftype) { /* Before appending, ... */
|
|
case ROFFDEF_PRE: /* copy predefined to user-defined. */
|
|
roff_setstrn(&r->strtab, name, namesz,
|
|
value, strlen(value), 0);
|
|
break;
|
|
case ROFFDEF_REN: /* call original standard macro. */
|
|
csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
|
|
(int)strlen(value), value);
|
|
roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
free(call);
|
|
break;
|
|
case ROFFDEF_STD: /* rename and call standard macro. */
|
|
rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
|
|
roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
|
|
csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
|
|
(int)rsz, rname);
|
|
roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
|
|
free(call);
|
|
free(rname);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
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)) {
|
|
deftype = ROFFDEF_USER;
|
|
name = roff_getstrn(r, iname, namesz, &deftype);
|
|
if (name == NULL) {
|
|
mandoc_msg(MANDOCERR_STR_UNDEF,
|
|
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_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, pos, ".%s ... %s", roff_name[tok], cp);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_block_sub(ROFF_ARGS)
|
|
{
|
|
enum roff_tok 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) !=
|
|
TOKEN_NONE)
|
|
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;
|
|
}
|
|
|
|
return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
|
|
}
|
|
|
|
static int
|
|
roff_block_text(ROFF_ARGS)
|
|
{
|
|
|
|
if (tok != ROFF_ig)
|
|
roff_setstr(r, r->last->name, buf->buf + pos, 2);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Check for a closing "\}" and handle it.
|
|
* In this function, the final "int *offs" argument is used for
|
|
* different purposes than elsewhere:
|
|
* Input: *offs == 0: caller wants to discard arguments following \}
|
|
* *offs == 1: caller wants to preserve text following \}
|
|
* Output: *offs = 0: tell caller to discard input line
|
|
* *offs = 1: tell caller to use input line
|
|
*/
|
|
static int
|
|
roff_cond_checkend(ROFF_ARGS)
|
|
{
|
|
char *ep;
|
|
int endloop, irc, rr;
|
|
|
|
irc = ROFF_IGN;
|
|
rr = r->last->rule;
|
|
endloop = tok != ROFF_while ? ROFF_IGN :
|
|
rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
|
|
if (roffnode_cleanscope(r))
|
|
irc |= endloop;
|
|
|
|
/*
|
|
* If "\}" occurs on a macro line without a preceding macro or
|
|
* a text line contains nothing else, drop the line completely.
|
|
*/
|
|
|
|
ep = buf->buf + pos;
|
|
if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
|
|
rr = 0;
|
|
|
|
/*
|
|
* The closing delimiter "\}" rewinds the conditional scope
|
|
* but is otherwise ignored when interpreting the line.
|
|
*/
|
|
|
|
while ((ep = strchr(ep, '\\')) != NULL) {
|
|
switch (ep[1]) {
|
|
case '}':
|
|
if (ep[2] == '\0')
|
|
ep[0] = '\0';
|
|
else if (rr)
|
|
ep[1] = '&';
|
|
else
|
|
memmove(ep, ep + 2, strlen(ep + 2) + 1);
|
|
if (roff_ccond(r, ln, ep - buf->buf))
|
|
irc |= endloop;
|
|
break;
|
|
case '\0':
|
|
++ep;
|
|
break;
|
|
default:
|
|
ep += 2;
|
|
break;
|
|
}
|
|
}
|
|
*offs = rr;
|
|
return irc;
|
|
}
|
|
|
|
/*
|
|
* Parse and process a request or macro line in conditional scope.
|
|
*/
|
|
static int
|
|
roff_cond_sub(ROFF_ARGS)
|
|
{
|
|
struct roffnode *bl;
|
|
int irc, rr;
|
|
enum roff_tok t;
|
|
|
|
rr = 0; /* If arguments follow "\}", skip them. */
|
|
irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
t = roff_parse(r, buf->buf, &pos, ln, ppos);
|
|
|
|
/* For now, let high level macros abort .ce mode. */
|
|
|
|
if (roffce_node != NULL &&
|
|
(t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
|
|
t == ROFF_TH || t == ROFF_TS)) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
roffce_lines = 0;
|
|
roffce_node = NULL;
|
|
}
|
|
|
|
/*
|
|
* Fully handle known macros when they are structurally
|
|
* required or when the conditional evaluated to true.
|
|
*/
|
|
|
|
if (t == ROFF_break) {
|
|
if (irc & ROFF_LOOPMASK)
|
|
irc = ROFF_IGN | ROFF_LOOPEXIT;
|
|
else if (rr) {
|
|
for (bl = r->last; bl != NULL; bl = bl->parent) {
|
|
bl->rule = 0;
|
|
if (bl->tok == ROFF_while)
|
|
break;
|
|
}
|
|
}
|
|
} else if (t != TOKEN_NONE &&
|
|
(rr || roffs[t].flags & ROFFMAC_STRUCT))
|
|
irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
|
|
else
|
|
irc |= rr ? ROFF_CONT : ROFF_IGN;
|
|
return irc;
|
|
}
|
|
|
|
/*
|
|
* Parse and process a text line in conditional scope.
|
|
*/
|
|
static int
|
|
roff_cond_text(ROFF_ARGS)
|
|
{
|
|
int irc, rr;
|
|
|
|
rr = 1; /* If arguments follow "\}", preserve them. */
|
|
irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
|
|
if (rr)
|
|
irc |= ROFF_CONT;
|
|
return irc;
|
|
}
|
|
|
|
/* --- handling of numeric and conditional expressions -------------------- */
|
|
|
|
/*
|
|
* 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':
|
|
case 'P':
|
|
scaled = *res * 40;
|
|
break;
|
|
case 'm':
|
|
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, char *v, int *pos)
|
|
{
|
|
const char *start, *end;
|
|
char *cp, *name;
|
|
size_t sz;
|
|
int deftype, len, number, savepos, istrue, wanttrue;
|
|
|
|
if ('!' == v[*pos]) {
|
|
wanttrue = 0;
|
|
(*pos)++;
|
|
} else
|
|
wanttrue = 1;
|
|
|
|
switch (v[*pos]) {
|
|
case '\0':
|
|
return 0;
|
|
case 'n':
|
|
case 'o':
|
|
(*pos)++;
|
|
return wanttrue;
|
|
case 'e':
|
|
case 't':
|
|
case 'v':
|
|
(*pos)++;
|
|
return !wanttrue;
|
|
case 'c':
|
|
do {
|
|
(*pos)++;
|
|
} while (v[*pos] == ' ');
|
|
|
|
/*
|
|
* Quirk for groff compatibility:
|
|
* The horizontal tab is neither available nor unavailable.
|
|
*/
|
|
|
|
if (v[*pos] == '\t') {
|
|
(*pos)++;
|
|
return 0;
|
|
}
|
|
|
|
/* Printable ASCII characters are available. */
|
|
|
|
if (v[*pos] != '\\') {
|
|
(*pos)++;
|
|
return wanttrue;
|
|
}
|
|
|
|
end = v + ++*pos;
|
|
switch (mandoc_escape(&end, &start, &len)) {
|
|
case ESCAPE_SPECIAL:
|
|
istrue = mchars_spec2cp(start, len) != -1;
|
|
break;
|
|
case ESCAPE_UNICODE:
|
|
istrue = 1;
|
|
break;
|
|
case ESCAPE_NUMBERED:
|
|
istrue = mchars_num2char(start, len) != -1;
|
|
break;
|
|
default:
|
|
istrue = !wanttrue;
|
|
break;
|
|
}
|
|
*pos = end - v;
|
|
return istrue == wanttrue;
|
|
case 'd':
|
|
case 'r':
|
|
cp = v + *pos + 1;
|
|
while (*cp == ' ')
|
|
cp++;
|
|
name = cp;
|
|
sz = roff_getname(r, &cp, ln, cp - v);
|
|
if (sz == 0)
|
|
istrue = 0;
|
|
else if (v[*pos] == 'r')
|
|
istrue = roff_hasregn(r, name, sz);
|
|
else {
|
|
deftype = ROFFDEF_ANY;
|
|
roff_getstrn(r, name, sz, &deftype);
|
|
istrue = !!deftype;
|
|
}
|
|
*pos = (name + sz) - v;
|
|
return istrue == 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 int
|
|
roff_line_ignore(ROFF_ARGS)
|
|
{
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_insec(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_unsupp(ROFF_ARGS)
|
|
{
|
|
|
|
mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_cond(ROFF_ARGS)
|
|
{
|
|
int irc;
|
|
|
|
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.
|
|
* Except that .while does not support next-line scope.
|
|
*/
|
|
|
|
if (buf->buf[pos] == '\0' && tok != ROFF_while) {
|
|
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;
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
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,
|
|
ln, ppos, "%s", roff_name[tok]);
|
|
|
|
r->last->endspan = 1;
|
|
|
|
out:
|
|
*offs = pos;
|
|
irc = ROFF_RERUN;
|
|
if (tok == ROFF_while)
|
|
irc |= ROFF_WHILE;
|
|
return irc;
|
|
}
|
|
|
|
static int
|
|
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);
|
|
switch (name[namesz]) {
|
|
case '\\':
|
|
return ROFF_IGN;
|
|
case '\t':
|
|
string = buf->buf + pos + namesz;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* 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);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
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 '+':
|
|
case '-':
|
|
case '*':
|
|
case '/':
|
|
case '%':
|
|
case '&':
|
|
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,
|
|
ln, *pos, "%s", v);
|
|
*res = 0;
|
|
break;
|
|
}
|
|
*res /= operand2;
|
|
break;
|
|
case '%':
|
|
if (operand2 == 0) {
|
|
mandoc_msg(MANDOCERR_DIVZERO,
|
|
ln, *pos, "%s", 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;
|
|
}
|
|
|
|
/* --- register management ------------------------------------------------ */
|
|
|
|
void
|
|
roff_setreg(struct roff *r, const char *name, int val, char sign)
|
|
{
|
|
roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
|
|
}
|
|
|
|
static void
|
|
roff_setregn(struct roff *r, const char *name, size_t len,
|
|
int val, char sign, int step)
|
|
{
|
|
struct roffreg *reg;
|
|
|
|
/* Search for an existing register with the same name. */
|
|
reg = r->regtab;
|
|
|
|
while (reg != NULL && (reg->key.sz != len ||
|
|
strncmp(reg->key.p, name, len) != 0))
|
|
reg = reg->next;
|
|
|
|
if (NULL == reg) {
|
|
/* Create a new register. */
|
|
reg = mandoc_malloc(sizeof(struct roffreg));
|
|
reg->key.p = mandoc_strndup(name, len);
|
|
reg->key.sz = len;
|
|
reg->val = 0;
|
|
reg->step = 0;
|
|
reg->next = r->regtab;
|
|
r->regtab = reg;
|
|
}
|
|
|
|
if ('+' == sign)
|
|
reg->val += val;
|
|
else if ('-' == sign)
|
|
reg->val -= val;
|
|
else
|
|
reg->val = val;
|
|
if (step != INT_MIN)
|
|
reg->step = step;
|
|
}
|
|
|
|
/*
|
|
* 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 struct roff *r, const char *name)
|
|
{
|
|
|
|
switch (*name) {
|
|
case '$': /* Number of arguments of the last macro evaluated. */
|
|
return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
|
|
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(struct roff *r, const char *name)
|
|
{
|
|
return roff_getregn(r, name, strlen(name), '\0');
|
|
}
|
|
|
|
static int
|
|
roff_getregn(struct roff *r, const char *name, size_t len, char sign)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && 2 == len) {
|
|
val = roff_getregro(r, 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)) {
|
|
switch (sign) {
|
|
case '+':
|
|
reg->val += reg->step;
|
|
break;
|
|
case '-':
|
|
reg->val -= reg->step;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return reg->val;
|
|
}
|
|
}
|
|
|
|
roff_setregn(r, name, len, 0, '\0', INT_MIN);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
roff_hasregn(const struct roff *r, const char *name, size_t len)
|
|
{
|
|
struct roffreg *reg;
|
|
int val;
|
|
|
|
if ('.' == name[0] && 2 == len) {
|
|
val = roff_getregro(r, name + 1);
|
|
if (-1 != val)
|
|
return 1;
|
|
}
|
|
|
|
for (reg = r->regtab; reg; reg = reg->next)
|
|
if (len == reg->key.sz &&
|
|
0 == strncmp(name, reg->key.p, len))
|
|
return 1;
|
|
|
|
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 int
|
|
roff_nr(ROFF_ARGS)
|
|
{
|
|
char *key, *val, *step;
|
|
size_t keysz;
|
|
int iv, is, len;
|
|
char sign;
|
|
|
|
key = val = buf->buf + pos;
|
|
if (*key == '\0')
|
|
return ROFF_IGN;
|
|
|
|
keysz = roff_getname(r, &val, ln, pos);
|
|
if (key[keysz] == '\\' || key[keysz] == '\t')
|
|
return ROFF_IGN;
|
|
|
|
sign = *val;
|
|
if (sign == '+' || sign == '-')
|
|
val++;
|
|
|
|
len = 0;
|
|
if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
|
|
return ROFF_IGN;
|
|
|
|
step = val + len;
|
|
while (isspace((unsigned char)*step))
|
|
step++;
|
|
if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
|
|
is = INT_MIN;
|
|
|
|
roff_setregn(r, key, keysz, iv, sign, is);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
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;
|
|
}
|
|
|
|
/* --- handler functions for roff requests -------------------------------- */
|
|
|
|
static int
|
|
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);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
if (name[namesz] == '\\' || name[namesz] == '\t')
|
|
break;
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
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,
|
|
ln, ppos, "%s", 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 int
|
|
roff_Dd(ROFF_ARGS)
|
|
{
|
|
int mask;
|
|
enum roff_tok t, te;
|
|
|
|
switch (tok) {
|
|
case ROFF_Dd:
|
|
tok = MDOC_Dd;
|
|
te = MDOC_MAX;
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MDOC;
|
|
mask = MPARSE_MDOC | MPARSE_QUICK;
|
|
break;
|
|
case ROFF_TH:
|
|
tok = MAN_TH;
|
|
te = MAN_MAX;
|
|
if (r->format == 0)
|
|
r->format = MPARSE_MAN;
|
|
mask = MPARSE_QUICK;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
if ((r->options & mask) == 0)
|
|
for (t = tok; t < te; t++)
|
|
roff_setstr(r, roff_name[t], NULL, 0);
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
static int
|
|
roff_TE(ROFF_ARGS)
|
|
{
|
|
r->man->flags &= ~ROFF_NONOFILL;
|
|
if (r->tbl == NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
|
|
return ROFF_IGN;
|
|
}
|
|
if (tbl_end(r->tbl, 0) == 0) {
|
|
r->tbl = NULL;
|
|
free(buf->buf);
|
|
buf->buf = mandoc_strdup(".sp");
|
|
buf->sz = 4;
|
|
*offs = 0;
|
|
return ROFF_REPARSE;
|
|
}
|
|
r->tbl = NULL;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_T_(ROFF_ARGS)
|
|
{
|
|
|
|
if (NULL == r->tbl)
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
|
|
else
|
|
tbl_restart(ln, ppos, r->tbl);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* Handle in-line equation delimiters.
|
|
*/
|
|
static int
|
|
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 int
|
|
roff_EQ(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
|
|
if (r->man->meta.macroset == MACROSET_MAN)
|
|
man_breakscope(r->man, ROFF_EQ);
|
|
n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
|
|
if (ln > r->man->last->line)
|
|
n->flags |= NODE_LINE;
|
|
n->eqn = eqn_box_new();
|
|
roff_node_append(r->man, n);
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
|
|
assert(r->eqn == NULL);
|
|
if (r->last_eqn == NULL)
|
|
r->last_eqn = eqn_alloc();
|
|
else
|
|
eqn_reset(r->last_eqn);
|
|
r->eqn = r->last_eqn;
|
|
r->eqn->node = n;
|
|
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
".EQ %s", buf->buf + pos);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_EN(ROFF_ARGS)
|
|
{
|
|
if (r->eqn != NULL) {
|
|
eqn_parse(r->eqn);
|
|
r->eqn = NULL;
|
|
} else
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
"EN %s", buf->buf + pos);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_TS(ROFF_ARGS)
|
|
{
|
|
if (r->tbl != NULL) {
|
|
mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
|
|
tbl_end(r->tbl, 0);
|
|
}
|
|
r->man->flags |= ROFF_NONOFILL;
|
|
r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
|
|
if (r->last_tbl == NULL)
|
|
r->first_tbl = r->tbl;
|
|
r->last_tbl = r->tbl;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_noarg(ROFF_ARGS)
|
|
{
|
|
if (r->man->flags & (MAN_BLINE | MAN_ELINE))
|
|
man_breakscope(r->man, tok);
|
|
if (tok == ROFF_brp)
|
|
tok = ROFF_br;
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
|
|
"%s %s", roff_name[tok], buf->buf + pos);
|
|
if (tok == ROFF_nf)
|
|
r->man->flags |= ROFF_NOFILL;
|
|
else if (tok == ROFF_fi)
|
|
r->man->flags &= ~ROFF_NOFILL;
|
|
r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_onearg(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
char *cp;
|
|
int npos;
|
|
|
|
if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
|
|
(tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
|
|
tok == ROFF_ti))
|
|
man_breakscope(r->man, tok);
|
|
|
|
if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
|
|
r->man->last = roffce_node;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
}
|
|
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
n = r->man->last;
|
|
|
|
cp = buf->buf + pos;
|
|
if (*cp != '\0') {
|
|
while (*cp != '\0' && *cp != ' ')
|
|
cp++;
|
|
while (*cp == ' ')
|
|
*cp++ = '\0';
|
|
if (*cp != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, (int)(cp - buf->buf),
|
|
"%s ... %s", roff_name[tok], cp);
|
|
roff_word_alloc(r->man, ln, pos, buf->buf + pos);
|
|
}
|
|
|
|
if (tok == ROFF_ce || tok == ROFF_rj) {
|
|
if (r->man->last->type == ROFFT_ELEM) {
|
|
roff_word_alloc(r->man, ln, pos, "1");
|
|
r->man->last->flags |= NODE_NOSRC;
|
|
}
|
|
npos = 0;
|
|
if (roff_evalnum(r, ln, r->man->last->string, &npos,
|
|
&roffce_lines, 0) == 0) {
|
|
mandoc_msg(MANDOCERR_CE_NONUM,
|
|
ln, pos, "ce %s", buf->buf + pos);
|
|
roffce_lines = 1;
|
|
}
|
|
if (roffce_lines < 1) {
|
|
r->man->last = r->man->last->parent;
|
|
roffce_node = NULL;
|
|
roffce_lines = 0;
|
|
} else
|
|
roffce_node = r->man->last->parent;
|
|
} else {
|
|
n->flags |= NODE_VALID | NODE_ENDED;
|
|
r->man->last = n;
|
|
}
|
|
n->flags |= NODE_LINE;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_manyarg(ROFF_ARGS)
|
|
{
|
|
struct roff_node *n;
|
|
char *sp, *ep;
|
|
|
|
roff_elem_alloc(r->man, ln, ppos, tok);
|
|
n = r->man->last;
|
|
|
|
for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
|
|
while (*ep != '\0' && *ep != ' ')
|
|
ep++;
|
|
while (*ep == ' ')
|
|
*ep++ = '\0';
|
|
roff_word_alloc(r->man, ln, sp - buf->buf, sp);
|
|
}
|
|
|
|
n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
|
|
r->man->last = n;
|
|
r->man->next = ROFF_NEXT_SIBLING;
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_als(ROFF_ARGS)
|
|
{
|
|
char *oldn, *newn, *end, *value;
|
|
size_t oldsz, newsz, valsz;
|
|
|
|
newn = oldn = buf->buf + pos;
|
|
if (*newn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
newsz = roff_getname(r, &oldn, ln, pos);
|
|
if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
end = oldn;
|
|
oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
|
|
if (oldsz == 0)
|
|
return ROFF_IGN;
|
|
|
|
valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
|
|
(int)oldsz, oldn);
|
|
roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
free(value);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
/*
|
|
* The .break request only makes sense inside conditionals,
|
|
* and that case is already handled in roff_cond_sub().
|
|
*/
|
|
static int
|
|
roff_break(ROFF_ARGS)
|
|
{
|
|
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_cc(ROFF_ARGS)
|
|
{
|
|
const char *p;
|
|
|
|
p = buf->buf + pos;
|
|
|
|
if (*p == '\0' || (r->control = *p++) == '.')
|
|
r->control = '\0';
|
|
|
|
if (*p != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS,
|
|
ln, p - buf->buf, "cc ... %s", p);
|
|
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_char(ROFF_ARGS)
|
|
{
|
|
const char *p, *kp, *vp;
|
|
size_t ksz, vsz;
|
|
int font;
|
|
|
|
/* Parse the character to be replaced. */
|
|
|
|
kp = buf->buf + pos;
|
|
p = kp + 1;
|
|
if (*kp == '\0' || (*kp == '\\' &&
|
|
mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
|
|
(*p != ' ' && *p != '\0')) {
|
|
mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
|
|
return ROFF_IGN;
|
|
}
|
|
ksz = p - kp;
|
|
while (*p == ' ')
|
|
p++;
|
|
|
|
/*
|
|
* If the replacement string contains a font escape sequence,
|
|
* we have to restore the font at the end.
|
|
*/
|
|
|
|
vp = p;
|
|
vsz = strlen(p);
|
|
font = 0;
|
|
while (*p != '\0') {
|
|
if (*p++ != '\\')
|
|
continue;
|
|
switch (mandoc_escape(&p, NULL, NULL)) {
|
|
case ESCAPE_FONT:
|
|
case ESCAPE_FONTROMAN:
|
|
case ESCAPE_FONTITALIC:
|
|
case ESCAPE_FONTBOLD:
|
|
case ESCAPE_FONTBI:
|
|
case ESCAPE_FONTCR:
|
|
case ESCAPE_FONTCB:
|
|
case ESCAPE_FONTCI:
|
|
case ESCAPE_FONTPREV:
|
|
font++;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
if (font > 1)
|
|
mandoc_msg(MANDOCERR_CHAR_FONT,
|
|
ln, (int)(vp - buf->buf), "%s", vp);
|
|
|
|
/*
|
|
* Approximate the effect of .char using the .tr tables.
|
|
* XXX In groff, .char and .tr interact differently.
|
|
*/
|
|
|
|
if (ksz == 1) {
|
|
if (r->xtab == NULL)
|
|
r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
|
|
assert((unsigned int)*kp < 128);
|
|
free(r->xtab[(int)*kp].p);
|
|
r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
|
|
"%s%s", vp, font ? "\fP" : "");
|
|
} else {
|
|
roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
|
|
if (font)
|
|
roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_ec(ROFF_ARGS)
|
|
{
|
|
const char *p;
|
|
|
|
p = buf->buf + pos;
|
|
if (*p == '\0')
|
|
r->escape = '\\';
|
|
else {
|
|
r->escape = *p;
|
|
if (*++p != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
|
|
(int)(p - buf->buf), "ec ... %s", p);
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_eo(ROFF_ARGS)
|
|
{
|
|
r->escape = '\0';
|
|
if (buf->buf[pos] != '\0')
|
|
mandoc_msg(MANDOCERR_ARG_SKIP,
|
|
ln, pos, "eo %s", buf->buf + pos);
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_nop(ROFF_ARGS)
|
|
{
|
|
while (buf->buf[pos] == ' ')
|
|
pos++;
|
|
*offs = pos;
|
|
return ROFF_RERUN;
|
|
}
|
|
|
|
static int
|
|
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, 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, ln,
|
|
(int)(p - buf->buf), "%s", 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, ln,
|
|
(int)(p - buf->buf), "%s", second);
|
|
return ROFF_IGN;
|
|
}
|
|
ssz = (size_t)(p - second);
|
|
} else if (*second == '\0') {
|
|
mandoc_msg(MANDOCERR_TR_ODD, ln,
|
|
(int)(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;
|
|
}
|
|
|
|
/*
|
|
* Implementation of the .return request.
|
|
* There is no need to call roff_userret() from here.
|
|
* The read module will call that after rewinding the reader stack
|
|
* to the place from where the current macro was called.
|
|
*/
|
|
static int
|
|
roff_return(ROFF_ARGS)
|
|
{
|
|
if (r->mstackpos >= 0)
|
|
return ROFF_IGN | ROFF_USERRET;
|
|
|
|
mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_rn(ROFF_ARGS)
|
|
{
|
|
const char *value;
|
|
char *oldn, *newn, *end;
|
|
size_t oldsz, newsz;
|
|
int deftype;
|
|
|
|
oldn = newn = buf->buf + pos;
|
|
if (*oldn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
oldsz = roff_getname(r, &newn, ln, pos);
|
|
if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
|
|
return ROFF_IGN;
|
|
|
|
end = newn;
|
|
newsz = roff_getname(r, &end, ln, newn - buf->buf);
|
|
if (newsz == 0)
|
|
return ROFF_IGN;
|
|
|
|
deftype = ROFFDEF_ANY;
|
|
value = roff_getstrn(r, oldn, oldsz, &deftype);
|
|
switch (deftype) {
|
|
case ROFFDEF_USER:
|
|
roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_PRE:
|
|
roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_REN:
|
|
roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
|
|
roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
case ROFFDEF_STD:
|
|
roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
default:
|
|
roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
|
|
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
|
|
break;
|
|
}
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_shift(ROFF_ARGS)
|
|
{
|
|
struct mctx *ctx;
|
|
int levels, i;
|
|
|
|
levels = 1;
|
|
if (buf->buf[pos] != '\0' &&
|
|
roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
|
|
mandoc_msg(MANDOCERR_CE_NONUM,
|
|
ln, pos, "shift %s", buf->buf + pos);
|
|
levels = 1;
|
|
}
|
|
if (r->mstackpos < 0) {
|
|
mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
|
|
return ROFF_IGN;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
if (levels > ctx->argc) {
|
|
mandoc_msg(MANDOCERR_SHIFT,
|
|
ln, pos, "%d, but max is %d", levels, ctx->argc);
|
|
levels = ctx->argc;
|
|
}
|
|
if (levels == 0)
|
|
return ROFF_IGN;
|
|
for (i = 0; i < levels; i++)
|
|
free(ctx->argv[i]);
|
|
ctx->argc -= levels;
|
|
for (i = 0; i < ctx->argc; i++)
|
|
ctx->argv[i] = ctx->argv[i + levels];
|
|
return ROFF_IGN;
|
|
}
|
|
|
|
static int
|
|
roff_so(ROFF_ARGS)
|
|
{
|
|
char *name, *cp;
|
|
|
|
name = buf->buf + pos;
|
|
mandoc_msg(MANDOCERR_SO, 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_msg(MANDOCERR_SO_PATH, 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;
|
|
}
|
|
|
|
/* --- user defined strings and macros ------------------------------------ */
|
|
|
|
static int
|
|
roff_userdef(ROFF_ARGS)
|
|
{
|
|
struct mctx *ctx;
|
|
char *arg, *ap, *dst, *src;
|
|
size_t sz;
|
|
|
|
/* If the macro is empty, ignore it altogether. */
|
|
|
|
if (*r->current_string == '\0')
|
|
return ROFF_IGN;
|
|
|
|
/* Initialize a new macro stack context. */
|
|
|
|
if (++r->mstackpos == r->mstacksz) {
|
|
r->mstack = mandoc_recallocarray(r->mstack,
|
|
r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
|
|
r->mstacksz += 8;
|
|
}
|
|
ctx = r->mstack + r->mstackpos;
|
|
ctx->argsz = 0;
|
|
ctx->argc = 0;
|
|
ctx->argv = NULL;
|
|
|
|
/*
|
|
* Collect pointers to macro argument strings,
|
|
* NUL-terminating them and escaping quotes.
|
|
*/
|
|
|
|
src = buf->buf + pos;
|
|
while (*src != '\0') {
|
|
if (ctx->argc == ctx->argsz) {
|
|
ctx->argsz += 8;
|
|
ctx->argv = mandoc_reallocarray(ctx->argv,
|
|
ctx->argsz, sizeof(*ctx->argv));
|
|
}
|
|
arg = roff_getarg(r, &src, ln, &pos);
|
|
sz = 1; /* For the terminating NUL. */
|
|
for (ap = arg; *ap != '\0'; ap++)
|
|
sz += *ap == '"' ? 4 : 1;
|
|
ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
|
|
for (ap = arg; *ap != '\0'; ap++) {
|
|
if (*ap == '"') {
|
|
memcpy(dst, "\\(dq", 4);
|
|
dst += 4;
|
|
} else
|
|
*dst++ = *ap;
|
|
}
|
|
*dst = '\0';
|
|
free(arg);
|
|
}
|
|
|
|
/* Replace the macro invocation by the macro definition. */
|
|
|
|
free(buf->buf);
|
|
buf->buf = mandoc_strdup(r->current_string);
|
|
buf->sz = strlen(buf->buf) + 1;
|
|
*offs = 0;
|
|
|
|
return buf->buf[buf->sz - 2] == '\n' ?
|
|
ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
|
|
}
|
|
|
|
/*
|
|
* Calling a high-level macro that was renamed with .rn.
|
|
* r->current_string has already been set up by roff_parse().
|
|
*/
|
|
static int
|
|
roff_renamed(ROFF_ARGS)
|
|
{
|
|
char *nbuf;
|
|
|
|
buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
|
|
buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
|
|
free(buf->buf);
|
|
buf->buf = nbuf;
|
|
*offs = 0;
|
|
return ROFF_CONT;
|
|
}
|
|
|
|
/*
|
|
* Measure the length in bytes of the roff identifier at *cpp
|
|
* and advance the pointer to the next word.
|
|
*/
|
|
static size_t
|
|
roff_getname(struct roff *r, char **cpp, int ln, int pos)
|
|
{
|
|
char *name, *cp;
|
|
size_t namesz;
|
|
|
|
name = *cpp;
|
|
if (*name == '\0')
|
|
return 0;
|
|
|
|
/* Advance cp to the byte after the end of the name. */
|
|
|
|
for (cp = name; 1; cp++) {
|
|
namesz = cp - name;
|
|
if (*cp == '\0')
|
|
break;
|
|
if (*cp == ' ' || *cp == '\t') {
|
|
cp++;
|
|
break;
|
|
}
|
|
if (*cp != '\\')
|
|
continue;
|
|
if (cp[1] == '{' || cp[1] == '}')
|
|
break;
|
|
if (*++cp == '\\')
|
|
continue;
|
|
mandoc_msg(MANDOCERR_NAMESC, 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)
|
|
{
|
|
size_t namesz;
|
|
|
|
namesz = strlen(name);
|
|
roff_setstrn(&r->strtab, name, namesz, string,
|
|
string ? strlen(string) : 0, append);
|
|
roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
|
|
}
|
|
|
|
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(struct roff *r, const char *name, size_t len,
|
|
int *deftype)
|
|
{
|
|
const struct roffkv *n;
|
|
int found, i;
|
|
enum roff_tok tok;
|
|
|
|
found = 0;
|
|
for (n = r->strtab; n != NULL; n = n->next) {
|
|
if (strncmp(name, n->key.p, len) != 0 ||
|
|
n->key.p[len] != '\0' || n->val.p == NULL)
|
|
continue;
|
|
if (*deftype & ROFFDEF_USER) {
|
|
*deftype = ROFFDEF_USER;
|
|
return n->val.p;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
for (n = r->rentab; n != NULL; n = n->next) {
|
|
if (strncmp(name, n->key.p, len) != 0 ||
|
|
n->key.p[len] != '\0' || n->val.p == NULL)
|
|
continue;
|
|
if (*deftype & ROFFDEF_REN) {
|
|
*deftype = ROFFDEF_REN;
|
|
return n->val.p;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; i < PREDEFS_MAX; i++) {
|
|
if (strncmp(name, predefs[i].name, len) != 0 ||
|
|
predefs[i].name[len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_PRE) {
|
|
*deftype = ROFFDEF_PRE;
|
|
return predefs[i].str;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (r->man->meta.macroset != MACROSET_MAN) {
|
|
for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
|
|
if (strncmp(name, roff_name[tok], len) != 0 ||
|
|
roff_name[tok][len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_STD) {
|
|
*deftype = ROFFDEF_STD;
|
|
return NULL;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (r->man->meta.macroset != MACROSET_MDOC) {
|
|
for (tok = MAN_TH; tok < MAN_MAX; tok++) {
|
|
if (strncmp(name, roff_name[tok], len) != 0 ||
|
|
roff_name[tok][len] != '\0')
|
|
continue;
|
|
if (*deftype & ROFFDEF_STD) {
|
|
*deftype = ROFFDEF_STD;
|
|
return NULL;
|
|
} else {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (found == 0 && *deftype != ROFFDEF_ANY) {
|
|
if (*deftype & ROFFDEF_REN) {
|
|
/*
|
|
* This might still be a request,
|
|
* so do not treat it as undefined yet.
|
|
*/
|
|
*deftype = ROFFDEF_UNDEF;
|
|
return NULL;
|
|
}
|
|
|
|
/* Using an undefined string defines it to be empty. */
|
|
|
|
roff_setstrn(&r->strtab, name, len, "", 0, 0);
|
|
roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
|
|
}
|
|
|
|
*deftype = 0;
|
|
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);
|
|
}
|
|
}
|
|
|
|
/* --- accessors and utility functions ------------------------------------ */
|
|
|
|
/*
|
|
* 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) {
|
|
assert((unsigned int)*p < 128);
|
|
if ('\\' != *p && r->xtab && r->xtab[(unsigned 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_expand() 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 (r->control != '\0' && cp[pos] == r->control)
|
|
pos++;
|
|
else if (r->control != '\0')
|
|
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;
|
|
}
|