version 1.2, 2008/11/24 18:32:39 |
version 1.160, 2011/07/27 14:23:27 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se> |
* Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the |
* purpose with or without fee is hereby granted, provided that the above |
* above copyright notice and this permission notice appear in all |
* copyright notice and this permission notice appear in all copies. |
* copies. |
|
* |
* |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES |
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR |
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* PERFORMANCE OF THIS SOFTWARE. |
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*/ |
*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <assert.h> |
#include <assert.h> |
#include <ctype.h> |
#include <ctype.h> |
#include <err.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
#include <stdio.h> |
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#include <string.h> |
#include <string.h> |
#include <time.h> |
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#include "libmdocml.h" |
#include "mandoc.h" |
#include "private.h" |
#include "libroff.h" |
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#include "libmandoc.h" |
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#define ROFF_MAXARG 10 |
/* Maximum number of nested if-else conditionals. */ |
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#define RSTACK_MAX 128 |
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enum roffd { |
enum rofft { |
ROFF_ENTER = 0, |
ROFF_ad, |
ROFF_EXIT |
ROFF_am, |
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ROFF_ami, |
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ROFF_am1, |
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ROFF_de, |
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ROFF_dei, |
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ROFF_de1, |
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ROFF_ds, |
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ROFF_el, |
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ROFF_hy, |
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ROFF_ie, |
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ROFF_if, |
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ROFF_ig, |
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ROFF_it, |
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ROFF_ne, |
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ROFF_nh, |
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ROFF_nr, |
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ROFF_ns, |
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ROFF_ps, |
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ROFF_rm, |
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ROFF_so, |
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ROFF_ta, |
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ROFF_tr, |
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ROFF_TS, |
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ROFF_TE, |
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ROFF_T_, |
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ROFF_EQ, |
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ROFF_EN, |
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ROFF_cblock, |
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ROFF_ccond, |
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ROFF_USERDEF, |
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ROFF_MAX |
}; |
}; |
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enum rofftype { |
enum roffrule { |
ROFF_TITLE, |
ROFFRULE_ALLOW, |
ROFF_COMMENT, |
ROFFRULE_DENY |
ROFF_TEXT, |
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ROFF_LAYOUT |
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}; |
}; |
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#define ROFFCALL_ARGS \ |
/* |
int tok, struct rofftree *tree, \ |
* A single register entity. If "set" is zero, the value of the |
const char *argv[], enum roffd type |
* register should be the default one, which is per-register. |
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* Registers are assumed to be unsigned ints for now. |
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*/ |
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struct reg { |
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int set; /* whether set or not */ |
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unsigned int u; /* unsigned integer */ |
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}; |
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struct rofftree; |
struct roffstr { |
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char *key; /* key of symbol */ |
struct rofftok { |
char *val; /* current value */ |
char *name; |
struct roffstr *next; /* next in list */ |
int (*cb)(ROFFCALL_ARGS); |
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enum rofftype type; |
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int flags; |
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#define ROFF_NESTED (1 << 0) |
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#define ROFF_PARSED (1 << 1) |
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#define ROFF_CALLABLE (1 << 2) |
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#define ROFF_QUOTES (1 << 3) |
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}; |
}; |
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struct roffarg { |
struct roff { |
char *name; |
struct mparse *parse; /* parse point */ |
int flags; |
struct roffnode *last; /* leaf of stack */ |
#define ROFF_VALUE (1 << 0) |
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */ |
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int rstackpos; /* position in rstack */ |
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struct reg regs[REG__MAX]; |
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struct roffstr *first_string; /* user-defined strings & macros */ |
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const char *current_string; /* value of last called user macro */ |
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struct tbl_node *first_tbl; /* first table parsed */ |
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struct tbl_node *last_tbl; /* last table parsed */ |
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struct tbl_node *tbl; /* current table being parsed */ |
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struct eqn_node *last_eqn; /* last equation parsed */ |
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struct eqn_node *first_eqn; /* first equation parsed */ |
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struct eqn_node *eqn; /* current equation being parsed */ |
}; |
}; |
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struct roffnode { |
struct roffnode { |
int tok; |
enum rofft tok; /* type of node */ |
struct roffnode *parent; |
struct roffnode *parent; /* up one in stack */ |
size_t line; |
int line; /* parse line */ |
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int col; /* parse col */ |
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char *name; /* node name, e.g. macro name */ |
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char *end; /* end-rules: custom token */ |
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int endspan; /* end-rules: next-line or infty */ |
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enum roffrule rule; /* current evaluation rule */ |
}; |
}; |
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struct rofftree { |
#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
struct roffnode *last; |
enum rofft tok, /* tok of macro */ \ |
time_t date; |
char **bufp, /* input buffer */ \ |
char title[256]; |
size_t *szp, /* size of input buffer */ \ |
char section[256]; |
int ln, /* parse line */ \ |
char volume[256]; |
int ppos, /* original pos in buffer */ \ |
int state; |
int pos, /* current pos in buffer */ \ |
#define ROFF_PRELUDE (1 << 1) |
int *offs /* reset offset of buffer data */ |
#define ROFF_PRELUDE_Os (1 << 2) |
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#define ROFF_PRELUDE_Dt (1 << 3) |
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#define ROFF_PRELUDE_Dd (1 << 4) |
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#define ROFF_BODY (1 << 5) |
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struct md_mbuf *mbuf; /* NULL if ROFF_EXIT and error. */ |
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const struct md_args *args; |
typedef enum rofferr (*roffproc)(ROFF_ARGS); |
const struct md_rbuf *rbuf; |
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const roffin *roffin; |
struct roffmac { |
const roffblkin *roffblkin; |
const char *name; /* macro name */ |
const roffout *roffout; |
roffproc proc; /* process new macro */ |
const roffblkout *roffblkout; |
roffproc text; /* process as child text of macro */ |
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roffproc sub; /* process as child of macro */ |
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int flags; |
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#define ROFFMAC_STRUCT (1 << 0) /* always interpret */ |
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struct roffmac *next; |
}; |
}; |
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static int roff_Dd(ROFFCALL_ARGS); |
struct predef { |
static int roff_Dt(ROFFCALL_ARGS); |
const char *name; /* predefined input name */ |
static int roff_Os(ROFFCALL_ARGS); |
const char *str; /* replacement symbol */ |
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}; |
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static int roff_layout(ROFFCALL_ARGS); |
#define PREDEF(__name, __str) \ |
static int roff_text(ROFFCALL_ARGS); |
{ (__name), (__str) }, |
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static struct roffnode *roffnode_new(int, size_t, |
static enum rofft roffhash_find(const char *, size_t); |
struct rofftree *); |
static void roffhash_init(void); |
static void roffnode_free(int, struct rofftree *); |
static void roffnode_cleanscope(struct roff *); |
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static void roffnode_pop(struct roff *); |
static int rofffindtok(const char *); |
static void roffnode_push(struct roff *, enum rofft, |
static int rofffindarg(const char *); |
const char *, int, int); |
static int rofffindcallable(const char *); |
static enum rofferr roff_block(ROFF_ARGS); |
static int roffargs(int, char *, char **); |
static enum rofferr roff_block_text(ROFF_ARGS); |
static int roffparse(struct rofftree *, char *, size_t); |
static enum rofferr roff_block_sub(ROFF_ARGS); |
static int textparse(const struct rofftree *, |
static enum rofferr roff_cblock(ROFF_ARGS); |
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static enum rofferr roff_ccond(ROFF_ARGS); |
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static enum rofferr roff_cond(ROFF_ARGS); |
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static enum rofferr roff_cond_text(ROFF_ARGS); |
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static enum rofferr roff_cond_sub(ROFF_ARGS); |
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static enum rofferr roff_ds(ROFF_ARGS); |
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static enum roffrule roff_evalcond(const char *, int *); |
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static void roff_free1(struct roff *); |
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static void roff_freestr(struct roff *); |
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static char *roff_getname(struct roff *, char **, int, int); |
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static const char *roff_getstrn(const struct roff *, |
const char *, size_t); |
const char *, size_t); |
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static enum rofferr roff_line_ignore(ROFF_ARGS); |
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static enum rofferr roff_nr(ROFF_ARGS); |
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static void roff_openeqn(struct roff *, const char *, |
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int, int, const char *); |
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static enum rofft roff_parse(struct roff *, const char *, int *); |
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static enum rofferr roff_parsetext(char *); |
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static void roff_res(struct roff *, |
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char **, size_t *, int, int); |
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static enum rofferr roff_rm(ROFF_ARGS); |
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static void roff_setstr(struct roff *, |
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const char *, const char *, int); |
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static enum rofferr roff_so(ROFF_ARGS); |
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static enum rofferr roff_TE(ROFF_ARGS); |
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static enum rofferr roff_TS(ROFF_ARGS); |
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static enum rofferr roff_EQ(ROFF_ARGS); |
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static enum rofferr roff_EN(ROFF_ARGS); |
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static enum rofferr roff_T_(ROFF_ARGS); |
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static enum rofferr roff_userdef(ROFF_ARGS); |
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/* See roffhash_find() */ |
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static const struct rofftok tokens[ROFF_MAX] = { |
#define ASCII_HI 126 |
{ "\\\"", NULL, ROFF_COMMENT, 0 }, |
#define ASCII_LO 33 |
{ "Dd", roff_Dd, ROFF_TITLE, 0 }, |
#define HASHWIDTH (ASCII_HI - ASCII_LO + 1) |
{ "Dt", roff_Dt, ROFF_TITLE, 0 }, |
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{ "Os", roff_Os, ROFF_TITLE, 0 }, |
static struct roffmac *hash[HASHWIDTH]; |
{ "Sh", roff_layout, ROFF_LAYOUT, ROFF_PARSED }, |
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{ "An", roff_text, ROFF_TEXT, ROFF_PARSED }, |
static struct roffmac roffs[ROFF_MAX] = { |
{ "Li", roff_text, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, |
{ "ad", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "ds", roff_ds, NULL, NULL, 0, NULL }, |
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{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "hy", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "it", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "ne", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "nh", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "nr", roff_nr, NULL, NULL, 0, NULL }, |
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{ "ns", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "ps", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "rm", roff_rm, NULL, NULL, 0, NULL }, |
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{ "so", roff_so, NULL, NULL, 0, NULL }, |
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{ "ta", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "tr", roff_line_ignore, NULL, NULL, 0, NULL }, |
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{ "TS", roff_TS, NULL, NULL, 0, NULL }, |
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{ "TE", roff_TE, NULL, NULL, 0, NULL }, |
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{ "T&", roff_T_, NULL, NULL, 0, NULL }, |
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{ "EQ", roff_EQ, NULL, NULL, 0, NULL }, |
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{ "EN", roff_EN, NULL, NULL, 0, NULL }, |
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{ ".", roff_cblock, NULL, NULL, 0, NULL }, |
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{ "\\}", roff_ccond, NULL, NULL, 0, NULL }, |
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{ NULL, roff_userdef, NULL, NULL, 0, NULL }, |
}; |
}; |
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static const struct roffarg tokenargs[ROFF_ARGMAX] = { |
/* Array of injected predefined strings. */ |
{ "split", 0 }, |
#define PREDEFS_MAX 38 |
{ "nosplit", 0 }, |
static const struct predef predefs[PREDEFS_MAX] = { |
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#include "predefs.in" |
}; |
}; |
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/* See roffhash_find() */ |
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#define ROFF_HASH(p) (p[0] - ASCII_LO) |
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int |
static void |
roff_free(struct rofftree *tree, int flush) |
roffhash_init(void) |
{ |
{ |
int error; |
struct roffmac *n; |
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int buc, i; |
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assert(tree->mbuf); |
for (i = 0; i < (int)ROFF_USERDEF; i++) { |
if ( ! flush) |
assert(roffs[i].name[0] >= ASCII_LO); |
tree->mbuf = NULL; |
assert(roffs[i].name[0] <= ASCII_HI); |
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/* LINTED */ |
buc = ROFF_HASH(roffs[i].name); |
while (tree->last) |
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if ( ! (*tokens[tree->last->tok].cb) |
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(tree->last->tok, tree, NULL, ROFF_EXIT)) |
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/* Disallow flushing. */ |
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tree->mbuf = NULL; |
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error = tree->mbuf ? 0 : 1; |
if (NULL != (n = hash[buc])) { |
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for ( ; n->next; n = n->next) |
if (tree->mbuf && (ROFF_PRELUDE & tree->state)) { |
/* Do nothing. */ ; |
warnx("%s: prelude never finished", |
n->next = &roffs[i]; |
tree->rbuf->name); |
} else |
error = 1; |
hash[buc] = &roffs[i]; |
} |
} |
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} |
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free(tree); |
/* |
return(error ? 0 : 1); |
* Look up a roff token by its name. Returns ROFF_MAX if no macro by |
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* the nil-terminated string name could be found. |
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*/ |
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static enum rofft |
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roffhash_find(const char *p, size_t s) |
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{ |
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int buc; |
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struct roffmac *n; |
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/* |
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* libroff has an extremely simple hashtable, for the time |
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* being, which simply keys on the first character, which must |
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* be printable, then walks a chain. It works well enough until |
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* optimised. |
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*/ |
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if (p[0] < ASCII_LO || p[0] > ASCII_HI) |
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return(ROFF_MAX); |
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buc = ROFF_HASH(p); |
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if (NULL == (n = hash[buc])) |
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return(ROFF_MAX); |
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for ( ; n; n = n->next) |
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if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s]) |
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return((enum rofft)(n - roffs)); |
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return(ROFF_MAX); |
} |
} |
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struct rofftree * |
/* |
roff_alloc(const struct md_args *args, struct md_mbuf *out, |
* Pop the current node off of the stack of roff instructions currently |
const struct md_rbuf *in, |
* pending. |
const roffin *roffin, const roffout *roffout, |
*/ |
const roffblkin *roffblkin, |
static void |
const roffblkout *roffblkout) |
roffnode_pop(struct roff *r) |
{ |
{ |
struct rofftree *tree; |
struct roffnode *p; |
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if (NULL == (tree = calloc(1, sizeof(struct rofftree)))) { |
assert(r->last); |
warn("malloc"); |
p = r->last; |
return(NULL); |
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r->last = r->last->parent; |
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free(p->name); |
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free(p->end); |
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free(p); |
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} |
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/* |
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* Push a roff node onto the instruction stack. This must later be |
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* removed with roffnode_pop(). |
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*/ |
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static void |
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roffnode_push(struct roff *r, enum rofft tok, const char *name, |
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int line, int col) |
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{ |
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struct roffnode *p; |
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p = mandoc_calloc(1, sizeof(struct roffnode)); |
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p->tok = tok; |
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if (name) |
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p->name = mandoc_strdup(name); |
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p->parent = r->last; |
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p->line = line; |
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p->col = col; |
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p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY; |
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r->last = p; |
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} |
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static void |
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roff_free1(struct roff *r) |
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{ |
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struct tbl_node *t; |
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struct eqn_node *e; |
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while (NULL != (t = r->first_tbl)) { |
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r->first_tbl = t->next; |
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tbl_free(t); |
} |
} |
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tree->state = ROFF_PRELUDE; |
r->first_tbl = r->last_tbl = r->tbl = NULL; |
tree->args = args; |
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tree->mbuf = out; |
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tree->rbuf = in; |
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tree->roffin = roffin; |
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tree->roffout = roffout; |
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tree->roffblkin = roffblkin; |
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tree->roffblkout = roffblkout; |
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return(tree); |
while (NULL != (e = r->first_eqn)) { |
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r->first_eqn = e->next; |
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eqn_free(e); |
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} |
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r->first_eqn = r->last_eqn = r->eqn = NULL; |
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while (r->last) |
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roffnode_pop(r); |
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roff_freestr(r); |
} |
} |
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int |
void |
roff_engine(struct rofftree *tree, char *buf, size_t sz) |
roff_reset(struct roff *r) |
{ |
{ |
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int i; |
|
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if (0 == sz) { |
roff_free1(r); |
warnx("%s: blank line (line %zu)", |
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tree->rbuf->name, |
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tree->rbuf->line); |
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return(0); |
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} else if ('.' != *buf) |
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return(textparse(tree, buf, sz)); |
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return(roffparse(tree, buf, sz)); |
memset(&r->regs, 0, sizeof(struct reg) * REG__MAX); |
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for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
} |
} |
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static int |
void |
textparse(const struct rofftree *tree, const char *buf, size_t sz) |
roff_free(struct roff *r) |
{ |
{ |
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roff_free1(r); |
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free(r); |
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} |
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struct roff * |
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roff_alloc(struct mparse *parse) |
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{ |
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struct roff *r; |
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int i; |
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r = mandoc_calloc(1, sizeof(struct roff)); |
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r->parse = parse; |
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r->rstackpos = -1; |
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if (NULL == tree->last) { |
roffhash_init(); |
warnx("%s: unexpected text (line %zu)", |
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tree->rbuf->name, |
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tree->rbuf->line); |
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return(0); |
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} else if (NULL == tree->last->parent) { |
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warnx("%s: disallowed text (line %zu)", |
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tree->rbuf->name, |
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tree->rbuf->line); |
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return(0); |
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} |
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/* Print text. */ |
for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
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return(1); |
return(r); |
} |
} |
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|
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/* |
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* Pre-filter each and every line for reserved words (one beginning with |
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* `\*', e.g., `\*(ab'). These must be handled before the actual line |
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* is processed. |
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* This also checks the syntax of regular escapes. |
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*/ |
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static void |
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roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) |
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{ |
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enum mandoc_esc esc; |
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const char *stesc; /* start of an escape sequence ('\\') */ |
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const char *stnam; /* start of the name, after "[(*" */ |
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const char *cp; /* end of the name, e.g. before ']' */ |
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const char *res; /* the string to be substituted */ |
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int i, maxl; |
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size_t nsz; |
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char *n; |
|
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static int |
again: |
roffargs(int tok, char *buf, char **argv) |
cp = *bufp + pos; |
|
while (NULL != (cp = strchr(cp, '\\'))) { |
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stesc = cp++; |
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|
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/* |
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* The second character must be an asterisk. |
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* If it isn't, skip it anyway: It is escaped, |
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* so it can't start another escape sequence. |
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*/ |
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|
|
if ('\0' == *cp) |
|
return; |
|
|
|
if ('*' != *cp) { |
|
res = cp; |
|
esc = mandoc_escape(&cp, NULL, NULL); |
|
if (ESCAPE_ERROR != esc) |
|
continue; |
|
cp = res; |
|
mandoc_msg |
|
(MANDOCERR_BADESCAPE, r->parse, |
|
ln, (int)(stesc - *bufp), NULL); |
|
return; |
|
} |
|
|
|
cp++; |
|
|
|
/* |
|
* The third character decides the length |
|
* of the name of the string. |
|
* Save a pointer to the name. |
|
*/ |
|
|
|
switch (*cp) { |
|
case ('\0'): |
|
return; |
|
case ('('): |
|
cp++; |
|
maxl = 2; |
|
break; |
|
case ('['): |
|
cp++; |
|
maxl = 0; |
|
break; |
|
default: |
|
maxl = 1; |
|
break; |
|
} |
|
stnam = cp; |
|
|
|
/* Advance to the end of the name. */ |
|
|
|
for (i = 0; 0 == maxl || i < maxl; i++, cp++) { |
|
if ('\0' == *cp) { |
|
mandoc_msg |
|
(MANDOCERR_BADESCAPE, |
|
r->parse, ln, |
|
(int)(stesc - *bufp), NULL); |
|
return; |
|
} |
|
if (0 == maxl && ']' == *cp) |
|
break; |
|
} |
|
|
|
/* |
|
* Retrieve the replacement string; if it is |
|
* undefined, resume searching for escapes. |
|
*/ |
|
|
|
res = roff_getstrn(r, stnam, (size_t)i); |
|
|
|
if (NULL == res) { |
|
mandoc_msg |
|
(MANDOCERR_BADESCAPE, r->parse, |
|
ln, (int)(stesc - *bufp), NULL); |
|
res = ""; |
|
} |
|
|
|
/* Replace the escape sequence by the string. */ |
|
|
|
pos += (stesc - *bufp); |
|
|
|
nsz = *szp + strlen(res) + 1; |
|
n = mandoc_malloc(nsz); |
|
|
|
strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1)); |
|
strlcat(n, res, nsz); |
|
strlcat(n, cp + (maxl ? 0 : 1), nsz); |
|
|
|
free(*bufp); |
|
|
|
*bufp = n; |
|
*szp = nsz; |
|
goto again; |
|
} |
|
} |
|
|
|
/* |
|
* Process text streams: convert all breakable hyphens into ASCII_HYPH. |
|
*/ |
|
static enum rofferr |
|
roff_parsetext(char *p) |
{ |
{ |
int i; |
char l, r; |
|
size_t sz; |
|
const char *start; |
|
enum mandoc_esc esc; |
|
|
(void)tok;/* FIXME: quotable strings? */ |
start = p; |
|
|
assert(tok >= 0 && tok < ROFF_MAX); |
while ('\0' != *p) { |
assert('.' == *buf); |
sz = strcspn(p, "-\\"); |
|
p += sz; |
|
|
/* LINTED */ |
if ('\0' == *p) |
for (i = 0; *buf && i < ROFF_MAXARG; i++) { |
break; |
argv[i] = buf++; |
|
while (*buf && ! isspace(*buf)) |
if ('\\' == *p) { |
buf++; |
/* Skip over escapes. */ |
if (0 == *buf) { |
p++; |
|
esc = mandoc_escape |
|
((const char **)&p, NULL, NULL); |
|
if (ESCAPE_ERROR == esc) |
|
break; |
continue; |
continue; |
|
} else if (p == start) { |
|
p++; |
|
continue; |
} |
} |
*buf++ = 0; |
|
while (*buf && isspace(*buf)) |
l = *(p - 1); |
buf++; |
r = *(p + 1); |
|
if ('\\' != l && |
|
'\t' != r && '\t' != l && |
|
' ' != r && ' ' != l && |
|
'-' != r && '-' != l && |
|
! isdigit((unsigned char)l) && |
|
! isdigit((unsigned char)r)) |
|
*p = ASCII_HYPH; |
|
p++; |
} |
} |
|
|
assert(i > 0); |
|
if (i < ROFF_MAXARG) |
|
argv[i] = NULL; |
|
|
|
return(ROFF_MAXARG > i); |
return(ROFF_CONT); |
} |
} |
|
|
|
enum rofferr |
|
roff_parseln(struct roff *r, int ln, char **bufp, |
|
size_t *szp, int pos, int *offs) |
|
{ |
|
enum rofft t; |
|
enum rofferr e; |
|
int ppos, ctl; |
|
|
static int |
/* |
roffparse(struct rofftree *tree, char *buf, size_t sz) |
* Run the reserved-word filter only if we have some reserved |
|
* words to fill in. |
|
*/ |
|
|
|
roff_res(r, bufp, szp, ln, pos); |
|
|
|
ppos = pos; |
|
ctl = mandoc_getcontrol(*bufp, &pos); |
|
|
|
/* |
|
* First, if a scope is open and we're not a macro, pass the |
|
* text through the macro's filter. If a scope isn't open and |
|
* we're not a macro, just let it through. |
|
* Finally, if there's an equation scope open, divert it into it |
|
* no matter our state. |
|
*/ |
|
|
|
if (r->last && ! ctl) { |
|
t = r->last->tok; |
|
assert(roffs[t].text); |
|
e = (*roffs[t].text) |
|
(r, t, bufp, szp, ln, pos, pos, offs); |
|
assert(ROFF_IGN == e || ROFF_CONT == e); |
|
if (ROFF_CONT != e) |
|
return(e); |
|
if (r->eqn) |
|
return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
|
if (r->tbl) |
|
return(tbl_read(r->tbl, ln, *bufp, pos)); |
|
return(roff_parsetext(*bufp + pos)); |
|
} else if ( ! ctl) { |
|
if (r->eqn) |
|
return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
|
if (r->tbl) |
|
return(tbl_read(r->tbl, ln, *bufp, pos)); |
|
return(roff_parsetext(*bufp + pos)); |
|
} else if (r->eqn) |
|
return(eqn_read(&r->eqn, ln, *bufp, ppos, offs)); |
|
|
|
/* |
|
* If a scope is open, go to the child handler for that macro, |
|
* as it may want to preprocess before doing anything with it. |
|
* Don't do so if an equation is open. |
|
*/ |
|
|
|
if (r->last) { |
|
t = r->last->tok; |
|
assert(roffs[t].sub); |
|
return((*roffs[t].sub) |
|
(r, t, bufp, szp, |
|
ln, ppos, pos, offs)); |
|
} |
|
|
|
/* |
|
* Lastly, as we've no scope open, try to look up and execute |
|
* the new macro. If no macro is found, simply return and let |
|
* the compilers handle it. |
|
*/ |
|
|
|
if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) |
|
return(ROFF_CONT); |
|
|
|
assert(roffs[t].proc); |
|
return((*roffs[t].proc) |
|
(r, t, bufp, szp, |
|
ln, ppos, pos, offs)); |
|
} |
|
|
|
|
|
void |
|
roff_endparse(struct roff *r) |
{ |
{ |
int tok, t; |
|
struct roffnode *node; |
|
char *argv[ROFF_MAXARG]; |
|
const char **argvp; |
|
|
|
assert(sz > 0); |
if (r->last) |
|
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
|
r->last->line, r->last->col, NULL); |
|
|
|
if (r->eqn) { |
|
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
|
r->eqn->eqn.ln, r->eqn->eqn.pos, NULL); |
|
eqn_end(&r->eqn); |
|
} |
|
|
|
if (r->tbl) { |
|
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
|
r->tbl->line, r->tbl->pos, NULL); |
|
tbl_end(&r->tbl); |
|
} |
|
} |
|
|
|
/* |
|
* Parse a roff node's type from the input buffer. This must be in the |
|
* form of ".foo xxx" in the usual way. |
|
*/ |
|
static enum rofft |
|
roff_parse(struct roff *r, const char *buf, int *pos) |
|
{ |
|
const char *mac; |
|
size_t maclen; |
|
enum rofft t; |
|
|
|
if ('\0' == buf[*pos] || '"' == buf[*pos] || |
|
'\t' == buf[*pos] || ' ' == buf[*pos]) |
|
return(ROFF_MAX); |
|
|
/* |
/* |
* Extract the token identifier from the buffer. If there's no |
* We stop the macro parse at an escape, tab, space, or nil. |
* callback for the token (comment, etc.) then exit immediately. |
* However, `\}' is also a valid macro, so make sure we don't |
* We don't do any error handling (yet), so if the token doesn't |
* clobber it by seeing the `\' as the end of token. |
* exist, die. |
|
*/ |
*/ |
|
|
if (3 > sz) { |
mac = buf + *pos; |
warnx("%s: malformed line (line %zu)", |
maclen = strcspn(mac + 1, " \\\t\0") + 1; |
tree->rbuf->name, |
|
tree->rbuf->line); |
t = (r->current_string = roff_getstrn(r, mac, maclen)) |
return(0); |
? ROFF_USERDEF : roffhash_find(mac, maclen); |
} else if (ROFF_MAX == (tok = rofffindtok(buf + 1))) { |
|
warnx("%s: unknown line token `%c%c' (line %zu)", |
*pos += (int)maclen; |
tree->rbuf->name, |
|
*(buf + 1), *(buf + 2), |
while (buf[*pos] && ' ' == buf[*pos]) |
tree->rbuf->line); |
(*pos)++; |
return(0); |
|
} else if (ROFF_COMMENT == tokens[tok].type) |
return(t); |
/* Ignore comment tokens. */ |
} |
return(1); |
|
|
/* ARGSUSED */ |
if ( ! roffargs(tok, buf, argv)) { |
static enum rofferr |
warnx("%s: too many arguments to `%s' (line %zu)", |
roff_cblock(ROFF_ARGS) |
tree->rbuf->name, tokens[tok].name, |
{ |
tree->rbuf->line); |
|
return(0); |
/* |
|
* A block-close `..' should only be invoked as a child of an |
|
* ignore macro, otherwise raise a warning and just ignore it. |
|
*/ |
|
|
|
if (NULL == r->last) { |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
} |
} |
|
|
/* Domain cross-contamination (and sanity) checks. */ |
switch (r->last->tok) { |
|
case (ROFF_am): |
|
/* FALLTHROUGH */ |
|
case (ROFF_ami): |
|
/* FALLTHROUGH */ |
|
case (ROFF_am1): |
|
/* FALLTHROUGH */ |
|
case (ROFF_de): |
|
/* ROFF_de1 is remapped to ROFF_de in roff_block(). */ |
|
/* FALLTHROUGH */ |
|
case (ROFF_dei): |
|
/* FALLTHROUGH */ |
|
case (ROFF_ig): |
|
break; |
|
default: |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
|
} |
|
|
switch (tokens[tok].type) { |
if ((*bufp)[pos]) |
case (ROFF_TITLE): |
mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); |
if (ROFF_PRELUDE & tree->state) { |
|
assert( ! (ROFF_BODY & tree->state)); |
roffnode_pop(r); |
|
roffnode_cleanscope(r); |
|
return(ROFF_IGN); |
|
|
|
} |
|
|
|
|
|
static void |
|
roffnode_cleanscope(struct roff *r) |
|
{ |
|
|
|
while (r->last) { |
|
if (--r->last->endspan < 0) |
break; |
break; |
} |
roffnode_pop(r); |
assert(ROFF_BODY & tree->state); |
} |
warnx("%s: prelude token `%s' in body (line %zu)", |
} |
tree->rbuf->name, tokens[tok].name, |
|
tree->rbuf->line); |
|
return(0); |
/* ARGSUSED */ |
case (ROFF_LAYOUT): |
static enum rofferr |
|
roff_ccond(ROFF_ARGS) |
|
{ |
|
|
|
if (NULL == r->last) { |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
|
} |
|
|
|
switch (r->last->tok) { |
|
case (ROFF_el): |
/* FALLTHROUGH */ |
/* FALLTHROUGH */ |
case (ROFF_TEXT): |
case (ROFF_ie): |
if (ROFF_BODY & tree->state) { |
/* FALLTHROUGH */ |
assert( ! (ROFF_PRELUDE & tree->state)); |
case (ROFF_if): |
break; |
break; |
} |
|
assert(ROFF_PRELUDE & tree->state); |
|
warnx("%s: body token `%s' in prelude (line %zu)", |
|
tree->rbuf->name, tokens[tok].name, |
|
tree->rbuf->line); |
|
return(0); |
|
case (ROFF_COMMENT): |
|
return(1); |
|
default: |
default: |
abort(); |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
} |
} |
|
|
|
if (r->last->endspan > -1) { |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
|
} |
|
|
|
if ((*bufp)[pos]) |
|
mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); |
|
|
|
roffnode_pop(r); |
|
roffnode_cleanscope(r); |
|
return(ROFF_IGN); |
|
} |
|
|
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_block(ROFF_ARGS) |
|
{ |
|
int sv; |
|
size_t sz; |
|
char *name; |
|
|
|
name = NULL; |
|
|
|
if (ROFF_ig != tok) { |
|
if ('\0' == (*bufp)[pos]) { |
|
mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
|
} |
|
|
|
/* |
|
* Re-write `de1', since we don't really care about |
|
* groff's strange compatibility mode, into `de'. |
|
*/ |
|
|
|
if (ROFF_de1 == tok) |
|
tok = ROFF_de; |
|
if (ROFF_de == tok) |
|
name = *bufp + pos; |
|
else |
|
mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos, |
|
roffs[tok].name); |
|
|
|
while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos])) |
|
pos++; |
|
|
|
while (isspace((unsigned char)(*bufp)[pos])) |
|
(*bufp)[pos++] = '\0'; |
|
} |
|
|
|
roffnode_push(r, tok, name, ln, ppos); |
|
|
/* |
/* |
* If this is a non-nestable layout token and we're below a |
* At the beginning of a `de' macro, clear the existing string |
* token of the same type, then recurse upward to the token, |
* with the same name, if there is one. New content will be |
* closing out the interim scopes. |
* added from roff_block_text() in multiline mode. |
* |
|
* If there's a nested token on the chain, then raise an error |
|
* as nested tokens have corresponding "ending" tokens and we're |
|
* breaking their scope. |
|
*/ |
*/ |
|
|
node = NULL; |
if (ROFF_de == tok) |
|
roff_setstr(r, name, "", 0); |
|
|
if (ROFF_LAYOUT == tokens[tok].type && |
if ('\0' == (*bufp)[pos]) |
! (ROFF_NESTED & tokens[tok].flags)) { |
return(ROFF_IGN); |
for (node = tree->last; node; node = node->parent) { |
|
if (node->tok == tok) |
/* If present, process the custom end-of-line marker. */ |
|
|
|
sv = pos; |
|
while ((*bufp)[pos] && ! isspace((unsigned char)(*bufp)[pos])) |
|
pos++; |
|
|
|
/* |
|
* Note: groff does NOT like escape characters in the input. |
|
* Instead of detecting this, we're just going to let it fly and |
|
* to hell with it. |
|
*/ |
|
|
|
assert(pos > sv); |
|
sz = (size_t)(pos - sv); |
|
|
|
if (1 == sz && '.' == (*bufp)[sv]) |
|
return(ROFF_IGN); |
|
|
|
r->last->end = mandoc_malloc(sz + 1); |
|
|
|
memcpy(r->last->end, *bufp + sv, sz); |
|
r->last->end[(int)sz] = '\0'; |
|
|
|
if ((*bufp)[pos]) |
|
mandoc_msg(MANDOCERR_ARGSLOST, r->parse, ln, pos, NULL); |
|
|
|
return(ROFF_IGN); |
|
} |
|
|
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_block_sub(ROFF_ARGS) |
|
{ |
|
enum rofft t; |
|
int i, j; |
|
|
|
/* |
|
* First check whether a custom macro exists at this level. If |
|
* it does, then check against it. This is some of groff's |
|
* stranger behaviours. If we encountered a custom end-scope |
|
* tag and that tag also happens to be a "real" macro, then we |
|
* need to try interpreting it again as a real macro. If it's |
|
* not, then return ignore. Else continue. |
|
*/ |
|
|
|
if (r->last->end) { |
|
for (i = pos, j = 0; r->last->end[j]; j++, i++) |
|
if ((*bufp)[i] != r->last->end[j]) |
break; |
break; |
|
|
/* Don't break nested scope. */ |
if ('\0' == r->last->end[j] && |
|
('\0' == (*bufp)[i] || |
|
' ' == (*bufp)[i] || |
|
'\t' == (*bufp)[i])) { |
|
roffnode_pop(r); |
|
roffnode_cleanscope(r); |
|
|
if ( ! (ROFF_NESTED & tokens[node->tok].flags)) |
while (' ' == (*bufp)[i] || '\t' == (*bufp)[i]) |
continue; |
i++; |
warnx("%s: scope of %s (line %zu) broken by " |
|
"%s (line %zu)", |
pos = i; |
tree->rbuf->name, |
if (ROFF_MAX != roff_parse(r, *bufp, &pos)) |
tokens[tok].name, |
return(ROFF_RERUN); |
node->line, |
return(ROFF_IGN); |
tokens[node->tok].name, |
|
tree->rbuf->line); |
|
return(0); |
|
} |
} |
} |
} |
|
|
if (node) { |
/* |
assert(ROFF_LAYOUT == tokens[tok].type); |
* If we have no custom end-query or lookup failed, then try |
assert( ! (ROFF_NESTED & tokens[tok].flags)); |
* pulling it out of the hashtable. |
assert(node->tok == tok); |
*/ |
|
|
/* Clear up to last scoped token. */ |
t = roff_parse(r, *bufp, &pos); |
|
|
/* LINTED */ |
/* |
do { |
* Macros other than block-end are only significant |
t = tree->last->tok; |
* in `de' blocks; elsewhere, simply throw them away. |
if ( ! (*tokens[tree->last->tok].cb) |
*/ |
(tree->last->tok, tree, NULL, ROFF_EXIT)) |
if (ROFF_cblock != t) { |
return(0); |
if (ROFF_de == tok) |
} while (t != tok); |
roff_setstr(r, r->last->name, *bufp + ppos, 1); |
|
return(ROFF_IGN); |
} |
} |
|
|
/* Proceed with actual token processing. */ |
assert(roffs[t].proc); |
|
return((*roffs[t].proc)(r, t, bufp, szp, |
argvp = (const char **)&argv[1]; |
ln, ppos, pos, offs)); |
return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER)); |
|
} |
} |
|
|
|
|
static int |
/* ARGSUSED */ |
rofffindarg(const char *name) |
static enum rofferr |
|
roff_block_text(ROFF_ARGS) |
{ |
{ |
size_t i; |
|
|
|
/* FIXME: use a table, this is slow but ok for now. */ |
if (ROFF_de == tok) |
|
roff_setstr(r, r->last->name, *bufp + pos, 1); |
|
|
/* LINTED */ |
return(ROFF_IGN); |
for (i = 0; i < ROFF_ARGMAX; i++) |
|
/* LINTED */ |
|
if (0 == strcmp(name, tokenargs[i].name)) |
|
return((int)i); |
|
|
|
return(ROFF_ARGMAX); |
|
} |
} |
|
|
|
|
static int |
/* ARGSUSED */ |
rofffindtok(const char *name) |
static enum rofferr |
|
roff_cond_sub(ROFF_ARGS) |
{ |
{ |
size_t i; |
enum rofft t; |
|
enum roffrule rr; |
|
char *ep; |
|
|
/* FIXME: use a table, this is slow but ok for now. */ |
rr = r->last->rule; |
|
roffnode_cleanscope(r); |
|
|
/* LINTED */ |
/* |
for (i = 0; i < ROFF_MAX; i++) |
* If the macro is unknown, first check if it contains a closing |
/* LINTED */ |
* delimiter `\}'. If it does, close out our scope and return |
if (0 == strncmp(name, tokens[i].name, 2)) |
* the currently-scoped rule (ignore or continue). Else, drop |
return((int)i); |
* into the currently-scoped rule. |
|
*/ |
return(ROFF_MAX); |
|
} |
|
|
|
|
if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) { |
|
ep = &(*bufp)[pos]; |
|
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
|
ep++; |
|
if ('}' != *ep) |
|
continue; |
|
|
static int |
/* |
rofffindcallable(const char *name) |
* Make the \} go away. |
{ |
* This is a little haphazard, as it's not quite |
int c; |
* clear how nroff does this. |
|
* If we're at the end of line, then just chop |
|
* off the \} and resize the buffer. |
|
* If we aren't, then conver it to spaces. |
|
*/ |
|
|
if (ROFF_MAX == (c = rofffindtok(name))) |
if ('\0' == *(ep + 1)) { |
return(ROFF_MAX); |
*--ep = '\0'; |
return(ROFF_CALLABLE & tokens[c].flags ? c : ROFF_MAX); |
*szp -= 2; |
|
} else |
|
*(ep - 1) = *ep = ' '; |
|
|
|
roff_ccond(r, ROFF_ccond, bufp, szp, |
|
ln, pos, pos + 2, offs); |
|
break; |
|
} |
|
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
|
} |
|
|
|
/* |
|
* A denied conditional must evaluate its children if and only |
|
* if they're either structurally required (such as loops and |
|
* conditionals) or a closing macro. |
|
*/ |
|
|
|
if (ROFFRULE_DENY == rr) |
|
if ( ! (ROFFMAC_STRUCT & roffs[t].flags)) |
|
if (ROFF_ccond != t) |
|
return(ROFF_IGN); |
|
|
|
assert(roffs[t].proc); |
|
return((*roffs[t].proc)(r, t, bufp, szp, |
|
ln, ppos, pos, offs)); |
} |
} |
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_cond_text(ROFF_ARGS) |
|
{ |
|
char *ep; |
|
enum roffrule rr; |
|
|
/* FIXME: accept only struct rofftree *. */ |
rr = r->last->rule; |
static struct roffnode * |
roffnode_cleanscope(r); |
roffnode_new(int tokid, size_t line, struct rofftree *tree) |
|
|
ep = &(*bufp)[pos]; |
|
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
|
ep++; |
|
if ('}' != *ep) |
|
continue; |
|
*ep = '&'; |
|
roff_ccond(r, ROFF_ccond, bufp, szp, |
|
ln, pos, pos + 2, offs); |
|
} |
|
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
|
} |
|
|
|
static enum roffrule |
|
roff_evalcond(const char *v, int *pos) |
{ |
{ |
struct roffnode *p; |
|
|
switch (v[*pos]) { |
if (NULL == (p = malloc(sizeof(struct roffnode)))) { |
case ('n'): |
warn("malloc"); |
(*pos)++; |
return(NULL); |
return(ROFFRULE_ALLOW); |
|
case ('e'): |
|
/* FALLTHROUGH */ |
|
case ('o'): |
|
/* FALLTHROUGH */ |
|
case ('t'): |
|
(*pos)++; |
|
return(ROFFRULE_DENY); |
|
default: |
|
break; |
} |
} |
|
|
p->line = line; |
while (v[*pos] && ' ' != v[*pos]) |
p->tok = tokid; |
(*pos)++; |
p->parent = tree->last; |
return(ROFFRULE_DENY); |
tree->last = p; |
|
return(p); |
|
} |
} |
|
|
|
/* ARGSUSED */ |
static void |
static enum rofferr |
roffnode_free(int tokid, struct rofftree *tree) |
roff_line_ignore(ROFF_ARGS) |
{ |
{ |
struct roffnode *p; |
|
|
|
assert(tree->last); |
if (ROFF_it == tok) |
assert(tree->last->tok == tokid); |
mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos, "it"); |
|
|
p = tree->last; |
return(ROFF_IGN); |
tree->last = tree->last->parent; |
|
free(p); |
|
} |
} |
|
|
|
|
/* FIXME: accept only struct rofftree *. */ |
|
/* ARGSUSED */ |
/* ARGSUSED */ |
static int |
static enum rofferr |
roff_Dd(ROFFCALL_ARGS) |
roff_cond(ROFF_ARGS) |
{ |
{ |
|
int sv; |
|
enum roffrule rule; |
|
|
assert(ROFF_PRELUDE & tree->state); |
/* |
if (ROFF_PRELUDE_Dt & tree->state || |
* An `.el' has no conditional body: it will consume the value |
ROFF_PRELUDE_Dd & tree->state) { |
* of the current rstack entry set in prior `ie' calls or |
warnx("%s: prelude `Dd' out-of-order (line %zu)", |
* defaults to DENY. |
tree->rbuf->name, tree->rbuf->line); |
* |
return(0); |
* If we're not an `el', however, then evaluate the conditional. |
|
*/ |
|
|
|
rule = ROFF_el == tok ? |
|
(r->rstackpos < 0 ? |
|
ROFFRULE_DENY : r->rstack[r->rstackpos--]) : |
|
roff_evalcond(*bufp, &pos); |
|
|
|
sv = pos; |
|
while (' ' == (*bufp)[pos]) |
|
pos++; |
|
|
|
/* |
|
* Roff is weird. If we have just white-space after the |
|
* conditional, it's considered the BODY and we exit without |
|
* really doing anything. Warn about this. It's probably |
|
* wrong. |
|
*/ |
|
|
|
if ('\0' == (*bufp)[pos] && sv != pos) { |
|
mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL); |
|
return(ROFF_IGN); |
} |
} |
|
|
assert(NULL == tree->last); |
roffnode_push(r, tok, NULL, ln, ppos); |
tree->state |= ROFF_PRELUDE_Dd; |
|
|
|
return(1); |
r->last->rule = rule; |
|
|
|
/* |
|
* An if-else will put the NEGATION of the current evaluated |
|
* conditional into the stack of rules. |
|
*/ |
|
|
|
if (ROFF_ie == tok) { |
|
if (r->rstackpos == RSTACK_MAX - 1) { |
|
mandoc_msg(MANDOCERR_MEM, |
|
r->parse, ln, ppos, NULL); |
|
return(ROFF_ERR); |
|
} |
|
r->rstack[++r->rstackpos] = |
|
ROFFRULE_DENY == r->last->rule ? |
|
ROFFRULE_ALLOW : ROFFRULE_DENY; |
|
} |
|
|
|
/* If the parent has false as its rule, then so do we. */ |
|
|
|
if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule) |
|
r->last->rule = ROFFRULE_DENY; |
|
|
|
/* |
|
* Determine scope. If we're invoked with "\{" trailing the |
|
* conditional, then we're in a multiline scope. Else our scope |
|
* expires on the next line. |
|
*/ |
|
|
|
r->last->endspan = 1; |
|
|
|
if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) { |
|
r->last->endspan = -1; |
|
pos += 2; |
|
} |
|
|
|
/* |
|
* If there are no arguments on the line, the next-line scope is |
|
* assumed. |
|
*/ |
|
|
|
if ('\0' == (*bufp)[pos]) |
|
return(ROFF_IGN); |
|
|
|
/* Otherwise re-run the roff parser after recalculating. */ |
|
|
|
*offs = pos; |
|
return(ROFF_RERUN); |
} |
} |
|
|
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
static int |
static enum rofferr |
roff_Dt(ROFFCALL_ARGS) |
roff_ds(ROFF_ARGS) |
{ |
{ |
|
char *name, *string; |
|
|
assert(ROFF_PRELUDE & tree->state); |
/* |
if ( ! (ROFF_PRELUDE_Dd & tree->state) || |
* A symbol is named by the first word following the macro |
(ROFF_PRELUDE_Dt & tree->state)) { |
* invocation up to a space. Its value is anything after the |
warnx("%s: prelude `Dt' out-of-order (line %zu)", |
* name's trailing whitespace and optional double-quote. Thus, |
tree->rbuf->name, tree->rbuf->line); |
* |
return(0); |
* [.ds foo "bar " ] |
} |
* |
|
* will have `bar " ' as its value. |
|
*/ |
|
|
assert(NULL == tree->last); |
string = *bufp + pos; |
tree->state |= ROFF_PRELUDE_Dt; |
name = roff_getname(r, &string, ln, pos); |
|
if ('\0' == *name) |
|
return(ROFF_IGN); |
|
|
return(1); |
/* Read past initial double-quote. */ |
|
if ('"' == *string) |
|
string++; |
|
|
|
/* The rest is the value. */ |
|
roff_setstr(r, name, string, 0); |
|
return(ROFF_IGN); |
} |
} |
|
|
|
int |
|
roff_regisset(const struct roff *r, enum regs reg) |
|
{ |
|
|
|
return(r->regs[(int)reg].set); |
|
} |
|
|
|
unsigned int |
|
roff_regget(const struct roff *r, enum regs reg) |
|
{ |
|
|
|
return(r->regs[(int)reg].u); |
|
} |
|
|
|
void |
|
roff_regunset(struct roff *r, enum regs reg) |
|
{ |
|
|
|
r->regs[(int)reg].set = 0; |
|
} |
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
static int |
static enum rofferr |
roff_Os(ROFFCALL_ARGS) |
roff_nr(ROFF_ARGS) |
{ |
{ |
|
const char *key; |
|
char *val; |
|
int iv; |
|
|
if (ROFF_EXIT == type) { |
val = *bufp + pos; |
roffnode_free(ROFF_Os, tree); |
key = roff_getname(r, &val, ln, pos); |
return(1); |
|
} |
|
|
|
assert(ROFF_PRELUDE & tree->state); |
if (0 == strcmp(key, "nS")) { |
if ( ! (ROFF_PRELUDE_Dt & tree->state) || |
r->regs[(int)REG_nS].set = 1; |
! (ROFF_PRELUDE_Dd & tree->state)) { |
if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0) |
warnx("%s: prelude `Os' out-of-order (line %zu)", |
r->regs[(int)REG_nS].u = (unsigned)iv; |
tree->rbuf->name, tree->rbuf->line); |
else |
return(0); |
r->regs[(int)REG_nS].u = 0u; |
} |
} |
|
|
assert(NULL == tree->last); |
return(ROFF_IGN); |
if (NULL == roffnode_new(ROFF_Os, tree->rbuf->line, tree)) |
} |
return(0); |
|
|
|
tree->state |= ROFF_PRELUDE_Os; |
/* ARGSUSED */ |
tree->state &= ~ROFF_PRELUDE; |
static enum rofferr |
tree->state |= ROFF_BODY; |
roff_rm(ROFF_ARGS) |
|
{ |
|
const char *name; |
|
char *cp; |
|
|
return(1); |
cp = *bufp + pos; |
|
while ('\0' != *cp) { |
|
name = roff_getname(r, &cp, ln, (int)(cp - *bufp)); |
|
if ('\0' != *name) |
|
roff_setstr(r, name, NULL, 0); |
|
} |
|
return(ROFF_IGN); |
} |
} |
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_TE(ROFF_ARGS) |
|
{ |
|
|
/* ARGUSED */ |
if (NULL == r->tbl) |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
else |
|
tbl_end(&r->tbl); |
|
|
|
return(ROFF_IGN); |
|
} |
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_T_(ROFF_ARGS) |
|
{ |
|
|
|
if (NULL == r->tbl) |
|
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
|
else |
|
tbl_restart(ppos, ln, r->tbl); |
|
|
|
return(ROFF_IGN); |
|
} |
|
|
|
#if 0 |
static int |
static int |
roffnextopt(const char ***in, char **val) |
roff_closeeqn(struct roff *r) |
{ |
{ |
const char *arg, **argv; |
|
int v; |
|
|
|
*val = NULL; |
return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0); |
argv = *in; |
} |
assert(argv); |
#endif |
|
|
if (NULL == (arg = *argv)) |
static void |
return(-1); |
roff_openeqn(struct roff *r, const char *name, int line, |
if ('-' != *arg) |
int offs, const char *buf) |
return(-1); |
{ |
if (ROFF_ARGMAX == (v = rofffindarg(&arg[1]))) |
struct eqn_node *e; |
return(-1); |
int poff; |
if ( ! (ROFF_VALUE & tokenargs[v].flags)) |
|
return(v); |
|
|
|
*in = ++argv; |
assert(NULL == r->eqn); |
|
e = eqn_alloc(name, offs, line, r->parse); |
|
|
/* FIXME: what if this looks like a roff token or argument? */ |
if (r->last_eqn) |
|
r->last_eqn->next = e; |
|
else |
|
r->first_eqn = r->last_eqn = e; |
|
|
return(*argv ? v : ROFF_ARGMAX); |
r->eqn = r->last_eqn = e; |
|
|
|
if (buf) { |
|
poff = 0; |
|
eqn_read(&r->eqn, line, buf, offs, &poff); |
|
} |
} |
} |
|
|
|
/* ARGSUSED */ |
|
static enum rofferr |
|
roff_EQ(ROFF_ARGS) |
|
{ |
|
|
|
roff_openeqn(r, *bufp + pos, ln, ppos, NULL); |
|
return(ROFF_IGN); |
|
} |
|
|
/* ARGSUSED */ |
/* ARGSUSED */ |
static int |
static enum rofferr |
roff_layout(ROFFCALL_ARGS) |
roff_EN(ROFF_ARGS) |
{ |
{ |
int i, c, argcp[ROFF_MAXARG]; |
|
char *v, *argvp[ROFF_MAXARG]; |
|
|
|
if (ROFF_EXIT == type) { |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
roffnode_free(tok, tree); |
return(ROFF_IGN); |
return((*tree->roffblkout[tok])(tok)); |
} |
} |
|
|
|
i = 0; |
/* ARGSUSED */ |
while (-1 != (c = roffnextopt(&argv, &v))) { |
static enum rofferr |
if (ROFF_ARGMAX == c) { |
roff_TS(ROFF_ARGS) |
warnx("%s: error parsing `%s' args (line %zu)", |
{ |
tree->rbuf->name, |
struct tbl_node *t; |
tokens[tok].name, |
|
tree->rbuf->line); |
if (r->tbl) { |
return(0); |
mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL); |
} |
tbl_end(&r->tbl); |
argcp[i] = c; |
|
argvp[i] = v; |
|
argv++; |
|
} |
} |
|
|
if (NULL == roffnode_new(tok, tree->rbuf->line, tree)) |
t = tbl_alloc(ppos, ln, r->parse); |
return(0); |
|
|
|
if ( ! (*tree->roffin[tok])(tok, argcp, argvp)) |
if (r->last_tbl) |
return(0); |
r->last_tbl->next = t; |
|
else |
|
r->first_tbl = r->last_tbl = t; |
|
|
if ( ! (ROFF_PARSED & tokens[tok].flags)) { |
r->tbl = r->last_tbl = t; |
/* TODO: print all tokens. */ |
return(ROFF_IGN); |
|
} |
|
|
if ( ! ((*tree->roffout[tok])(tok))) |
/* ARGSUSED */ |
return(0); |
static enum rofferr |
return((*tree->roffblkin[tok])(tok)); |
roff_so(ROFF_ARGS) |
|
{ |
|
char *name; |
|
|
|
mandoc_msg(MANDOCERR_SO, r->parse, ln, ppos, NULL); |
|
|
|
/* |
|
* 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. |
|
*/ |
|
|
|
name = *bufp + pos; |
|
if ('/' == *name || strstr(name, "../") || strstr(name, "/..")) { |
|
mandoc_msg(MANDOCERR_SOPATH, r->parse, ln, pos, NULL); |
|
return(ROFF_ERR); |
} |
} |
|
|
while (*argv) { |
*offs = pos; |
if (2 >= strlen(*argv) && ROFF_MAX != |
return(ROFF_SO); |
(c = rofffindcallable(*argv))) |
} |
if ( ! (*tokens[c].cb)(c, tree, |
|
argv + 1, ROFF_ENTER)) |
|
return(0); |
|
|
|
/* TODO: print token. */ |
/* ARGSUSED */ |
argv++; |
static enum rofferr |
|
roff_userdef(ROFF_ARGS) |
|
{ |
|
const char *arg[9]; |
|
char *cp, *n1, *n2; |
|
int i; |
|
|
|
/* |
|
* Collect pointers to macro argument strings |
|
* and null-terminate them. |
|
*/ |
|
cp = *bufp + pos; |
|
for (i = 0; i < 9; i++) |
|
arg[i] = '\0' == *cp ? "" : |
|
mandoc_getarg(r->parse, &cp, ln, &pos); |
|
|
|
/* |
|
* Expand macro arguments. |
|
*/ |
|
*szp = 0; |
|
n1 = cp = mandoc_strdup(r->current_string); |
|
while (NULL != (cp = strstr(cp, "\\$"))) { |
|
i = cp[2] - '1'; |
|
if (0 > i || 8 < i) { |
|
/* Not an argument invocation. */ |
|
cp += 2; |
|
continue; |
|
} |
|
|
|
*szp = strlen(n1) - 3 + strlen(arg[i]) + 1; |
|
n2 = mandoc_malloc(*szp); |
|
|
|
strlcpy(n2, n1, (size_t)(cp - n1 + 1)); |
|
strlcat(n2, arg[i], *szp); |
|
strlcat(n2, cp + 3, *szp); |
|
|
|
cp = n2 + (cp - n1); |
|
free(n1); |
|
n1 = n2; |
} |
} |
|
|
if ( ! ((*tree->roffout[tok])(tok))) |
/* |
return(0); |
* Replace the macro invocation |
|
* by the expanded macro. |
|
*/ |
|
free(*bufp); |
|
*bufp = n1; |
|
if (0 == *szp) |
|
*szp = strlen(*bufp) + 1; |
|
|
return((*tree->roffblkin[tok])(tok)); |
return(*szp > 1 && '\n' == (*bufp)[(int)*szp - 2] ? |
|
ROFF_REPARSE : ROFF_APPEND); |
} |
} |
|
|
|
static char * |
|
roff_getname(struct roff *r, char **cpp, int ln, int pos) |
|
{ |
|
char *name, *cp; |
|
|
/* ARGSUSED */ |
name = *cpp; |
static int |
if ('\0' == *name) |
roff_text(ROFFCALL_ARGS) |
return(name); |
|
|
|
/* Read until end of name. */ |
|
for (cp = name; '\0' != *cp && ' ' != *cp; cp++) { |
|
if ('\\' != *cp) |
|
continue; |
|
cp++; |
|
if ('\\' == *cp) |
|
continue; |
|
mandoc_msg(MANDOCERR_NAMESC, r->parse, ln, pos, NULL); |
|
*cp = '\0'; |
|
name = cp; |
|
} |
|
|
|
/* Nil-terminate name. */ |
|
if ('\0' != *cp) |
|
*(cp++) = '\0'; |
|
|
|
/* Read past spaces. */ |
|
while (' ' == *cp) |
|
cp++; |
|
|
|
*cpp = cp; |
|
return(name); |
|
} |
|
|
|
/* |
|
* Store *string into the user-defined string called *name. |
|
* In multiline mode, append to an existing entry and append '\n'; |
|
* else replace the existing entry, if there is one. |
|
* To clear an existing entry, call with (*r, *name, NULL, 0). |
|
*/ |
|
static void |
|
roff_setstr(struct roff *r, const char *name, const char *string, |
|
int multiline) |
{ |
{ |
int i, c, argcp[ROFF_MAXARG]; |
struct roffstr *n; |
char *v, *argvp[ROFF_MAXARG]; |
char *c; |
|
size_t oldch, newch; |
|
|
i = 0; |
/* Search for an existing string with the same name. */ |
while (-1 != (c = roffnextopt(&argv, &v))) { |
n = r->first_string; |
if (ROFF_ARGMAX == c) { |
while (n && strcmp(name, n->key)) |
warnx("%s: error parsing `%s' args (line %zu)", |
n = n->next; |
tree->rbuf->name, |
|
tokens[tok].name, |
if (NULL == n) { |
tree->rbuf->line); |
/* Create a new string table entry. */ |
return(0); |
n = mandoc_malloc(sizeof(struct roffstr)); |
} |
n->key = mandoc_strdup(name); |
argcp[i] = c; |
n->val = NULL; |
argvp[i] = v; |
n->next = r->first_string; |
argv++; |
r->first_string = n; |
|
} else if (0 == multiline) { |
|
/* In multiline mode, append; else replace. */ |
|
free(n->val); |
|
n->val = NULL; |
} |
} |
|
|
if ( ! (*tree->roffin[tok])(tok, argcp, argvp)) |
if (NULL == string) |
return(0); |
return; |
|
|
if ( ! (ROFF_PARSED & tokens[tok].flags)) { |
/* |
/* TODO: print all tokens. */ |
* One additional byte for the '\n' in multiline mode, |
return((*tree->roffout[tok])(tok)); |
* and one for the terminating '\0'. |
|
*/ |
|
newch = strlen(string) + (multiline ? 2u : 1u); |
|
if (NULL == n->val) { |
|
n->val = mandoc_malloc(newch); |
|
*n->val = '\0'; |
|
oldch = 0; |
|
} else { |
|
oldch = strlen(n->val); |
|
n->val = mandoc_realloc(n->val, oldch + newch); |
} |
} |
|
|
while (*argv) { |
/* Skip existing content in the destination buffer. */ |
if (2 >= strlen(*argv) && ROFF_MAX != |
c = n->val + (int)oldch; |
(c = rofffindcallable(*argv))) |
|
if ( ! (*tokens[c].cb)(c, tree, |
|
argv + 1, ROFF_ENTER)) |
|
return(0); |
|
|
|
/* TODO: print token. */ |
/* Append new content to the destination buffer. */ |
argv++; |
while (*string) { |
|
/* |
|
* Rudimentary roff copy mode: |
|
* Handle escaped backslashes. |
|
*/ |
|
if ('\\' == *string && '\\' == *(string + 1)) |
|
string++; |
|
*c++ = *string++; |
} |
} |
|
|
return((*tree->roffout[tok])(tok)); |
/* Append terminating bytes. */ |
|
if (multiline) |
|
*c++ = '\n'; |
|
*c = '\0'; |
|
} |
|
|
|
static const char * |
|
roff_getstrn(const struct roff *r, const char *name, size_t len) |
|
{ |
|
const struct roffstr *n; |
|
|
|
for (n = r->first_string; n; n = n->next) |
|
if (0 == strncmp(name, n->key, len) && |
|
'\0' == n->key[(int)len]) |
|
return(n->val); |
|
|
|
return(NULL); |
|
} |
|
|
|
static void |
|
roff_freestr(struct roff *r) |
|
{ |
|
struct roffstr *n, *nn; |
|
|
|
for (n = r->first_string; n; n = nn) { |
|
free(n->key); |
|
free(n->val); |
|
nn = n->next; |
|
free(n); |
|
} |
|
|
|
r->first_string = NULL; |
|
} |
|
|
|
const struct tbl_span * |
|
roff_span(const struct roff *r) |
|
{ |
|
|
|
return(r->tbl ? tbl_span(r->tbl) : NULL); |
|
} |
|
|
|
const struct eqn * |
|
roff_eqn(const struct roff *r) |
|
{ |
|
|
|
return(r->last_eqn ? &r->last_eqn->eqn : NULL); |
|
} |
|
|
|
char |
|
roff_eqndelim(const struct roff *r) |
|
{ |
|
|
|
return('\0'); |
} |
} |