version 1.365, 2019/04/21 23:51:21 |
version 1.382, 2022/04/24 13:38:46 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
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* Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv> |
* Copyright (c) 2010-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org> |
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* |
* |
* 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 above |
* purpose with or without fee is hereby granted, provided that the above |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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* |
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* Implementation of the roff(7) parser for mandoc(1). |
*/ |
*/ |
#include "config.h" |
#include "config.h" |
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Line 190 static int roff_cc(ROFF_ARGS); |
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Line 192 static int roff_cc(ROFF_ARGS); |
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static int roff_ccond(struct roff *, int, int); |
static int roff_ccond(struct roff *, int, int); |
static int roff_char(ROFF_ARGS); |
static int roff_char(ROFF_ARGS); |
static int roff_cond(ROFF_ARGS); |
static int roff_cond(ROFF_ARGS); |
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static int roff_cond_checkend(ROFF_ARGS); |
static int roff_cond_text(ROFF_ARGS); |
static int roff_cond_text(ROFF_ARGS); |
static int roff_cond_sub(ROFF_ARGS); |
static int roff_cond_sub(ROFF_ARGS); |
static int roff_ds(ROFF_ARGS); |
static int roff_ds(ROFF_ARGS); |
static int roff_ec(ROFF_ARGS); |
static int roff_ec(ROFF_ARGS); |
static int roff_eo(ROFF_ARGS); |
static int roff_eo(ROFF_ARGS); |
static int roff_eqndelim(struct roff *, struct buf *, int); |
static int roff_eqndelim(struct roff *, struct buf *, int); |
static int roff_evalcond(struct roff *r, int, char *, int *); |
static int roff_evalcond(struct roff *, int, char *, int *); |
static int roff_evalnum(struct roff *, int, |
static int roff_evalnum(struct roff *, int, |
const char *, int *, int *, int); |
const char *, int *, int *, int); |
static int roff_evalpar(struct roff *, int, |
static int roff_evalpar(struct roff *, int, |
Line 355 const char *__roff_name[MAN_MAX + 1] = { |
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Line 358 const char *__roff_name[MAN_MAX + 1] = { |
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"Lk", "Mt", "Brq", "Bro", |
"Lk", "Mt", "Brq", "Bro", |
"Brc", "%C", "Es", "En", |
"Brc", "%C", "Es", "En", |
"Dx", "%Q", "%U", "Ta", |
"Dx", "%Q", "%U", "Ta", |
NULL, |
"Tg", NULL, |
"TH", "SH", "SS", "TP", |
"TH", "SH", "SS", "TP", |
"TQ", |
"TQ", |
"LP", "PP", "P", "IP", |
"LP", "PP", "P", "IP", |
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roff_reset(struct roff *r) |
roff_reset(struct roff *r) |
{ |
{ |
roff_free1(r); |
roff_free1(r); |
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r->options |= MPARSE_COMMENT; |
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN); |
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN); |
r->control = '\0'; |
r->control = '\0'; |
r->escape = '\\'; |
r->escape = '\\'; |
Line 783 roff_reset(struct roff *r) |
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Line 787 roff_reset(struct roff *r) |
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void |
void |
roff_free(struct roff *r) |
roff_free(struct roff *r) |
{ |
{ |
int i; |
int i; |
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roff_free1(r); |
roff_free1(r); |
for (i = 0; i < r->mstacksz; i++) |
for (i = 0; i < r->mstacksz; i++) |
Line 800 roff_alloc(int options) |
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Line 804 roff_alloc(int options) |
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r = mandoc_calloc(1, sizeof(struct roff)); |
r = mandoc_calloc(1, sizeof(struct roff)); |
r->reqtab = roffhash_alloc(0, ROFF_RENAMED); |
r->reqtab = roffhash_alloc(0, ROFF_RENAMED); |
r->options = options; |
r->options = options | MPARSE_COMMENT; |
r->format = options & (MPARSE_MDOC | MPARSE_MAN); |
r->format = options & (MPARSE_MDOC | MPARSE_MAN); |
r->mstackpos = -1; |
r->mstackpos = -1; |
r->rstackpos = -1; |
r->rstackpos = -1; |
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roff_man_free(struct roff_man *man) |
roff_man_free(struct roff_man *man) |
{ |
{ |
roff_man_free1(man); |
roff_man_free1(man); |
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free(man->os_r); |
free(man); |
free(man); |
} |
} |
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Line 1100 roff_node_free(struct roff_node *n) |
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Line 1105 roff_node_free(struct roff_node *n) |
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free(n->norm); |
free(n->norm); |
eqn_box_free(n->eqn); |
eqn_box_free(n->eqn); |
free(n->string); |
free(n->string); |
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free(n->tag); |
free(n); |
free(n); |
} |
} |
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Line 1113 roff_node_delete(struct roff_man *man, struct roff_nod |
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Line 1119 roff_node_delete(struct roff_man *man, struct roff_nod |
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roff_node_free(n); |
roff_node_free(n); |
} |
} |
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int |
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roff_node_transparent(struct roff_node *n) |
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{ |
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if (n == NULL) |
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return 0; |
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if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT) |
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return 1; |
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return roff_tok_transparent(n->tok); |
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} |
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int |
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roff_tok_transparent(enum roff_tok tok) |
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{ |
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switch (tok) { |
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case ROFF_ft: |
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case ROFF_ll: |
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case ROFF_mc: |
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case ROFF_po: |
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case ROFF_ta: |
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case MDOC_Db: |
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case MDOC_Es: |
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case MDOC_Sm: |
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case MDOC_Tg: |
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case MAN_DT: |
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case MAN_UC: |
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case MAN_PD: |
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case MAN_AT: |
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return 1; |
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default: |
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return 0; |
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} |
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} |
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struct roff_node * |
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roff_node_child(struct roff_node *n) |
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{ |
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for (n = n->child; roff_node_transparent(n); n = n->next) |
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continue; |
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return n; |
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} |
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struct roff_node * |
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roff_node_prev(struct roff_node *n) |
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{ |
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do { |
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n = n->prev; |
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} while (roff_node_transparent(n)); |
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return n; |
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} |
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struct roff_node * |
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roff_node_next(struct roff_node *n) |
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{ |
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do { |
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n = n->next; |
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} while (roff_node_transparent(n)); |
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return n; |
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} |
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void |
void |
deroff(char **dest, const struct roff_node *n) |
deroff(char **dest, const struct roff_node *n) |
{ |
{ |
char *cp; |
char *cp; |
size_t sz; |
size_t sz; |
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if (n->type != ROFFT_TEXT) { |
if (n->string == NULL) { |
for (n = n->child; n != NULL; n = n->next) |
for (n = n->child; n != NULL; n = n->next) |
deroff(dest, n); |
deroff(dest, n); |
return; |
return; |
Line 1246 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1311 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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* in the syntax tree. |
* in the syntax tree. |
*/ |
*/ |
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if (newesc != ASCII_ESC && r->format == 0) { |
if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) { |
while (*ep == ' ' || *ep == '\t') |
while (*ep == ' ' || *ep == '\t') |
ep--; |
ep--; |
ep[1] = '\0'; |
ep[1] = '\0'; |
Line 1336 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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Line 1401 roff_expand(struct roff *r, struct buf *buf, int ln, i |
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term = '\0'; |
term = '\0'; |
cp = stesc + 1; |
cp = stesc + 1; |
if (*cp == 'E') |
while (*cp == 'E') |
cp++; |
cp++; |
esct = cp; |
esct = cp; |
switch (*esct) { |
switch (*esct) { |
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roff_getarg(struct roff *r, char **cpp, int ln, int *pos) |
roff_getarg(struct roff *r, char **cpp, int ln, int *pos) |
{ |
{ |
struct buf buf; |
struct buf buf; |
char *cp, *start; |
char *cp, *start; |
int newesc, pairs, quoted, white; |
int newesc, pairs, quoted, white; |
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/* Quoting can only start with a new word. */ |
/* Quoting can only start with a new word. */ |
Line 1759 roff_parsetext(struct roff *r, struct buf *buf, int po |
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Line 1824 roff_parsetext(struct roff *r, struct buf *buf, int po |
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} |
} |
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int |
int |
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs) |
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len) |
{ |
{ |
enum roff_tok t; |
enum roff_tok t; |
int e; |
int e; |
Line 1770 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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Line 1835 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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ppos = pos = *offs; |
ppos = pos = *offs; |
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if (len > 80 && r->tbl == NULL && r->eqn == NULL && |
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(r->man->flags & ROFF_NOFILL) == 0 && |
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strchr(" .\\", buf->buf[pos]) == NULL && |
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buf->buf[pos] != r->control && |
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strcspn(buf->buf, " ") < 80) |
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mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1, |
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"%.20s...", buf->buf + pos); |
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/* Handle in-line equation delimiters. */ |
/* Handle in-line equation delimiters. */ |
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if (r->tbl == NULL && |
if (r->tbl == NULL && |
Line 1815 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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Line 1888 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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roff_addtbl(r->man, ln, r->tbl); |
roff_addtbl(r->man, ln, r->tbl); |
return e; |
return e; |
} |
} |
if ( ! ctl) |
if ( ! ctl) { |
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r->options &= ~MPARSE_COMMENT; |
return roff_parsetext(r, buf, pos, offs) | e; |
return roff_parsetext(r, buf, pos, offs) | e; |
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} |
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/* Skip empty request lines. */ |
/* Skip empty request lines. */ |
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Line 1839 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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Line 1914 roff_parseln(struct roff *r, int ln, struct buf *buf, |
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/* No scope is open. This is a new request or macro. */ |
/* No scope is open. This is a new request or macro. */ |
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r->options &= ~MPARSE_COMMENT; |
spos = pos; |
spos = pos; |
t = roff_parse(r, buf->buf, &pos, ln, ppos); |
t = roff_parse(r, buf->buf, &pos, ln, ppos); |
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Line 1968 roff_parse(struct roff *r, char *buf, int *pos, int ln |
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Line 2044 roff_parse(struct roff *r, char *buf, int *pos, int ln |
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/* --- handling of request blocks ----------------------------------------- */ |
/* --- handling of request blocks ----------------------------------------- */ |
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/* |
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* Close a macro definition block or an "ignore" block. |
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*/ |
static int |
static int |
roff_cblock(ROFF_ARGS) |
roff_cblock(ROFF_ARGS) |
{ |
{ |
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int rr; |
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/* |
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* A block-close `..' should only be invoked as a child of an |
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* ignore macro, otherwise raise a warning and just ignore it. |
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*/ |
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if (r->last == NULL) { |
if (r->last == NULL) { |
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); |
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); |
return ROFF_IGN; |
return ROFF_IGN; |
Line 1984 roff_cblock(ROFF_ARGS) |
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Line 2059 roff_cblock(ROFF_ARGS) |
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switch (r->last->tok) { |
switch (r->last->tok) { |
case ROFF_am: |
case ROFF_am: |
/* ROFF_am1 is remapped to ROFF_am in roff_block(). */ |
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case ROFF_ami: |
case ROFF_ami: |
case ROFF_de: |
case ROFF_de: |
/* ROFF_de1 is remapped to ROFF_de in roff_block(). */ |
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case ROFF_dei: |
case ROFF_dei: |
case ROFF_ig: |
case ROFF_ig: |
break; |
break; |
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case ROFF_am1: |
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case ROFF_de1: |
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/* Remapped in roff_block(). */ |
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abort(); |
default: |
default: |
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); |
mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, ".."); |
return ROFF_IGN; |
return ROFF_IGN; |
} |
} |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
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/* |
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* If a conditional block with braces is still open, |
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* check for "\}" block end markers. |
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*/ |
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if (r->last != NULL && r->last->endspan < 0) { |
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rr = 1; /* If arguments follow "\}", warn about them. */ |
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roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr); |
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} |
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if (buf->buf[pos] != '\0') |
if (buf->buf[pos] != '\0') |
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, |
mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos, |
".. %s", buf->buf + pos); |
".. %s", buf->buf + pos); |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
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return ROFF_IGN; |
return ROFF_IGN; |
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} |
} |
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/* |
/* |
Line 2016 roffnode_cleanscope(struct roff *r) |
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Line 2103 roffnode_cleanscope(struct roff *r) |
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int inloop; |
int inloop; |
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inloop = 0; |
inloop = 0; |
while (r->last != NULL) { |
while (r->last != NULL && r->last->endspan > 0) { |
if (--r->last->endspan != 0) |
if (--r->last->endspan != 0) |
break; |
break; |
inloop += roffnode_pop(r); |
inloop += roffnode_pop(r); |
Line 2025 roffnode_cleanscope(struct roff *r) |
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Line 2112 roffnode_cleanscope(struct roff *r) |
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} |
} |
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/* |
/* |
* Handle the closing \} of a conditional block. |
* Handle the closing "\}" of a conditional block. |
* Apart from generating warnings, this only pops nodes. |
* Apart from generating warnings, this only pops nodes. |
* Return the number of loops ended. |
* Return the number of loops ended. |
*/ |
*/ |
Line 2245 roff_block_text(ROFF_ARGS) |
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Line 2332 roff_block_text(ROFF_ARGS) |
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return ROFF_IGN; |
return ROFF_IGN; |
} |
} |
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/* |
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* Check for a closing "\}" and handle it. |
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* In this function, the final "int *offs" argument is used for |
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* different purposes than elsewhere: |
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* Input: *offs == 0: caller wants to discard arguments following \} |
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* *offs == 1: caller wants to preserve text following \} |
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* Output: *offs = 0: tell caller to discard input line |
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* *offs = 1: tell caller to use input line |
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*/ |
static int |
static int |
roff_cond_sub(ROFF_ARGS) |
roff_cond_checkend(ROFF_ARGS) |
{ |
{ |
struct roffnode *bl; |
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char *ep; |
char *ep; |
int endloop, irc, rr; |
int endloop, irc, rr; |
enum roff_tok t; |
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irc = ROFF_IGN; |
irc = ROFF_IGN; |
rr = r->last->rule; |
rr = r->last->rule; |
Line 2261 roff_cond_sub(ROFF_ARGS) |
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Line 2355 roff_cond_sub(ROFF_ARGS) |
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irc |= endloop; |
irc |= endloop; |
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/* |
/* |
* If `\}' occurs on a macro line without a preceding macro, |
* If "\}" occurs on a macro line without a preceding macro or |
* drop the line completely. |
* a text line contains nothing else, drop the line completely. |
*/ |
*/ |
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ep = buf->buf + pos; |
ep = buf->buf + pos; |
if (ep[0] == '\\' && ep[1] == '}') |
if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0)) |
rr = 0; |
rr = 0; |
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/* |
/* |
* The closing delimiter `\}' rewinds the conditional scope |
* The closing delimiter "\}" rewinds the conditional scope |
* but is otherwise ignored when interpreting the line. |
* but is otherwise ignored when interpreting the line. |
*/ |
*/ |
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while ((ep = strchr(ep, '\\')) != NULL) { |
while ((ep = strchr(ep, '\\')) != NULL) { |
switch (ep[1]) { |
switch (ep[1]) { |
case '}': |
case '}': |
memmove(ep, ep + 2, strlen(ep + 2) + 1); |
if (ep[2] == '\0') |
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ep[0] = '\0'; |
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else if (rr) |
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ep[1] = '&'; |
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else |
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memmove(ep, ep + 2, strlen(ep + 2) + 1); |
if (roff_ccond(r, ln, ep - buf->buf)) |
if (roff_ccond(r, ln, ep - buf->buf)) |
irc |= endloop; |
irc |= endloop; |
break; |
break; |
Line 2289 roff_cond_sub(ROFF_ARGS) |
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Line 2388 roff_cond_sub(ROFF_ARGS) |
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break; |
break; |
} |
} |
} |
} |
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*offs = rr; |
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return irc; |
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} |
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/* |
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* Parse and process a request or macro line in conditional scope. |
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*/ |
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static int |
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roff_cond_sub(ROFF_ARGS) |
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{ |
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struct roffnode *bl; |
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int irc, rr; |
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enum roff_tok t; |
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rr = 0; /* If arguments follow "\}", skip them. */ |
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irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr); |
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t = roff_parse(r, buf->buf, &pos, ln, ppos); |
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/* For now, let high level macros abort .ce mode. */ |
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|
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if (roffce_node != NULL && |
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(t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ || |
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t == ROFF_TH || t == ROFF_TS)) { |
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r->man->last = roffce_node; |
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r->man->next = ROFF_NEXT_SIBLING; |
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roffce_lines = 0; |
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roffce_node = NULL; |
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} |
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/* |
/* |
* Fully handle known macros when they are structurally |
* Fully handle known macros when they are structurally |
* required or when the conditional evaluated to true. |
* required or when the conditional evaluated to true. |
*/ |
*/ |
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t = roff_parse(r, buf->buf, &pos, ln, ppos); |
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if (t == ROFF_break) { |
if (t == ROFF_break) { |
if (irc & ROFF_LOOPMASK) |
if (irc & ROFF_LOOPMASK) |
irc = ROFF_IGN | ROFF_LOOPEXIT; |
irc = ROFF_IGN | ROFF_LOOPEXIT; |
Line 2314 roff_cond_sub(ROFF_ARGS) |
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Line 2440 roff_cond_sub(ROFF_ARGS) |
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return irc; |
return irc; |
} |
} |
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/* |
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* Parse and process a text line in conditional scope. |
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*/ |
static int |
static int |
roff_cond_text(ROFF_ARGS) |
roff_cond_text(ROFF_ARGS) |
{ |
{ |
char *ep; |
int irc, rr; |
int endloop, irc, rr; |
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|
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irc = ROFF_IGN; |
rr = 1; /* If arguments follow "\}", preserve them. */ |
rr = r->last->rule; |
irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr); |
endloop = tok != ROFF_while ? ROFF_IGN : |
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rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT; |
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if (roffnode_cleanscope(r)) |
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irc |= endloop; |
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|
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/* |
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* If `\}' occurs on a text line with neither preceding |
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* nor following characters, drop the line completely. |
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*/ |
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|
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ep = buf->buf + pos; |
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if (strcmp(ep, "\\}") == 0) |
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rr = 0; |
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|
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/* |
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* The closing delimiter `\}' rewinds the conditional scope |
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* but is otherwise ignored when interpreting the line. |
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*/ |
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|
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while ((ep = strchr(ep, '\\')) != NULL) { |
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switch (ep[1]) { |
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case '}': |
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memmove(ep, ep + 2, strlen(ep + 2) + 1); |
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if (roff_ccond(r, ln, ep - buf->buf)) |
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irc |= endloop; |
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break; |
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case '\0': |
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++ep; |
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break; |
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default: |
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ep += 2; |
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break; |
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} |
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} |
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if (rr) |
if (rr) |
irc |= ROFF_CONT; |
irc |= ROFF_CONT; |
return irc; |
return irc; |
Line 3574 roff_char(ROFF_ARGS) |
|
Line 3668 roff_char(ROFF_ARGS) |
|
case ESCAPE_FONTITALIC: |
case ESCAPE_FONTITALIC: |
case ESCAPE_FONTBOLD: |
case ESCAPE_FONTBOLD: |
case ESCAPE_FONTBI: |
case ESCAPE_FONTBI: |
case ESCAPE_FONTCW: |
case ESCAPE_FONTCR: |
|
case ESCAPE_FONTCB: |
|
case ESCAPE_FONTCI: |
case ESCAPE_FONTPREV: |
case ESCAPE_FONTPREV: |
font++; |
font++; |
break; |
break; |
|
|
roff_shift(ROFF_ARGS) |
roff_shift(ROFF_ARGS) |
{ |
{ |
struct mctx *ctx; |
struct mctx *ctx; |
int levels, i; |
int argpos, levels, i; |
|
|
|
argpos = pos; |
levels = 1; |
levels = 1; |
if (buf->buf[pos] != '\0' && |
if (buf->buf[pos] != '\0' && |
roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) { |
roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) { |
Line 3790 roff_shift(ROFF_ARGS) |
|
Line 3887 roff_shift(ROFF_ARGS) |
|
ctx = r->mstack + r->mstackpos; |
ctx = r->mstack + r->mstackpos; |
if (levels > ctx->argc) { |
if (levels > ctx->argc) { |
mandoc_msg(MANDOCERR_SHIFT, |
mandoc_msg(MANDOCERR_SHIFT, |
ln, pos, "%d, but max is %d", levels, ctx->argc); |
ln, argpos, "%d, but max is %d", levels, ctx->argc); |
levels = ctx->argc; |
levels = ctx->argc; |
} |
} |
|
if (levels < 0) { |
|
mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels); |
|
levels = 0; |
|
} |
if (levels == 0) |
if (levels == 0) |
return ROFF_IGN; |
return ROFF_IGN; |
for (i = 0; i < levels; i++) |
for (i = 0; i < levels; i++) |
Line 3854 roff_userdef(ROFF_ARGS) |
|
Line 3955 roff_userdef(ROFF_ARGS) |
|
r->mstacksz += 8; |
r->mstacksz += 8; |
} |
} |
ctx = r->mstack + r->mstackpos; |
ctx = r->mstack + r->mstackpos; |
ctx->argsz = 0; |
|
ctx->argc = 0; |
ctx->argc = 0; |
ctx->argv = NULL; |
|
|
|
/* |
/* |
* Collect pointers to macro argument strings, |
* Collect pointers to macro argument strings, |