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-rw-r--r--share/man/man7/roff.712
-rw-r--r--usr.bin/mandoc/read.c74
-rw-r--r--usr.bin/mandoc/roff.c114
3 files changed, 111 insertions, 89 deletions
diff --git a/share/man/man7/roff.7 b/share/man/man7/roff.7
index c3e710dfc28..39b81055ab5 100644
--- a/share/man/man7/roff.7
+++ b/share/man/man7/roff.7
@@ -1,4 +1,4 @@
-.\" $OpenBSD: roff.7,v 1.62 2017/06/02 19:21:03 schwarze Exp $
+.\" $OpenBSD: roff.7,v 1.63 2017/06/04 00:08:56 schwarze Exp $
.\"
.\" Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
.\" Copyright (c) 2010,2011,2013-2015,2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -15,7 +15,7 @@
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: June 2 2017 $
+.Dd $Mdocdate: June 4 2017 $
.Dt ROFF 7
.Os
.Sh NAME
@@ -806,8 +806,11 @@ This is a Heirloom extension and currently unsupported.
Set a trap within a diversion.
Currently unsupported.
.It Ic \&ec Op Ar char
-Change the escape character.
-Currently unsupported.
+Enable the escape mechanism and change the escape character.
+The
+.Ar char
+argument defaults to the backslash
+.Pq Sq \e .
.It Ic \&ecr
Restore the escape character.
Currently unsupported.
@@ -837,7 +840,6 @@ See
.Ic \&EQ .
.It Ic \&eo
Disable the escape mechanism completely.
-Currently unsupported.
.It Ic \&EP
End a picture started by
.Ic \&BP .
diff --git a/usr.bin/mandoc/read.c b/usr.bin/mandoc/read.c
index 6909bda9e3b..21538c2050f 100644
--- a/usr.bin/mandoc/read.c
+++ b/usr.bin/mandoc/read.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: read.c,v 1.141 2017/06/03 15:54:09 schwarze Exp $ */
+/* $OpenBSD: read.c,v 1.142 2017/06/04 00:08:56 schwarze Exp $ */
/*
* Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -322,7 +322,6 @@ mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
const char *save_file;
char *cp;
size_t pos; /* byte number in the ln buffer */
- size_t j; /* auxiliary byte number in the blk buffer */
enum rofferr rr;
int of;
int lnn; /* line number in the real file */
@@ -404,79 +403,14 @@ mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
continue;
}
- /* Trailing backslash = a plain char. */
-
- if (blk.buf[i] != '\\' || i + 1 == blk.sz) {
- ln.buf[pos++] = blk.buf[i++];
- continue;
- }
-
- /*
- * Found escape and at least one other character.
- * When it's a newline character, skip it.
- * When there is a carriage return in between,
- * skip that one as well.
- */
-
- if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&
- '\n' == blk.buf[i + 2])
- ++i;
- if ('\n' == blk.buf[i + 1]) {
- i += 2;
- ++lnn;
- continue;
- }
-
- if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {
- j = i;
- i += 2;
- /* Comment, skip to end of line */
- for (; i < blk.sz; ++i) {
- if (blk.buf[i] != '\n')
- continue;
- if (blk.buf[i - 1] == ' ' ||
- blk.buf[i - 1] == '\t')
- mandoc_msg(
- MANDOCERR_SPACE_EOL,
- curp, curp->line,
- pos + i-1 - j, NULL);
- ++i;
- ++lnn;
- break;
- }
-
- /* Backout trailing whitespaces */
- for (; pos > 0; --pos) {
- if (ln.buf[pos - 1] != ' ')
- break;
- if (pos > 2 && ln.buf[pos - 2] == '\\')
- break;
- }
- break;
- }
-
- /* Catch escaped bogus characters. */
-
- c = (unsigned char) blk.buf[i+1];
-
- if ( ! (isascii(c) &&
- (isgraph(c) || isblank(c)))) {
- mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
- curp->line, pos, "0x%x", c);
- i += 2;
- ln.buf[pos++] = '?';
- continue;
- }
-
- /* Some other escape sequence, copy & cont. */
-
- ln.buf[pos++] = blk.buf[i++];
ln.buf[pos++] = blk.buf[i++];
}
- if (pos >= ln.sz)
+ if (pos + 1 >= ln.sz)
resize_buf(&ln, 256);
+ if (i == blk.sz || blk.buf[i] == '\0')
+ ln.buf[pos++] = '\n';
ln.buf[pos] = '\0';
/*
diff --git a/usr.bin/mandoc/roff.c b/usr.bin/mandoc/roff.c
index 9893599c0eb..07a2d227350 100644
--- a/usr.bin/mandoc/roff.c
+++ b/usr.bin/mandoc/roff.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: roff.c,v 1.174 2017/05/08 20:33:40 schwarze Exp $ */
+/* $OpenBSD: roff.c,v 1.175 2017/06/04 00:08:56 schwarze Exp $ */
/*
* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -97,6 +97,7 @@ struct roff {
int format; /* current file in mdoc or man format */
int argc; /* number of args of the last macro */
char control; /* control character */
+ char escape; /* escape character */
};
struct roffnode {
@@ -153,6 +154,8 @@ static enum rofferr roff_cond(ROFF_ARGS);
static enum rofferr roff_cond_text(ROFF_ARGS);
static enum rofferr roff_cond_sub(ROFF_ARGS);
static enum rofferr roff_ds(ROFF_ARGS);
+static enum rofferr roff_ec(ROFF_ARGS);
+static enum rofferr roff_eo(ROFF_ARGS);
static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
static int roff_evalcond(struct roff *r, int, char *, int *);
static int roff_evalnum(struct roff *, int,
@@ -383,13 +386,13 @@ static struct roffmac roffs[TOKEN_NONE] = {
{ roff_ds, NULL, NULL, 0 }, /* ds1 */
{ roff_unsupp, NULL, NULL, 0 }, /* dwh */
{ roff_unsupp, NULL, NULL, 0 }, /* dt */
- { roff_unsupp, NULL, NULL, 0 }, /* ec */
+ { roff_ec, NULL, NULL, 0 }, /* ec */
{ roff_unsupp, NULL, NULL, 0 }, /* ecr */
{ roff_unsupp, NULL, NULL, 0 }, /* ecs */
{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
{ roff_unsupp, NULL, NULL, 0 }, /* em */
{ roff_EN, NULL, NULL, 0 }, /* EN */
- { roff_unsupp, NULL, NULL, 0 }, /* eo */
+ { roff_eo, NULL, NULL, 0 }, /* eo */
{ roff_unsupp, NULL, NULL, 0 }, /* EP */
{ roff_EQ, NULL, NULL, 0 }, /* EQ */
{ roff_line_ignore, NULL, NULL, 0 }, /* errprint */
@@ -749,7 +752,8 @@ roff_reset(struct roff *r)
{
roff_free1(r);
r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
- r->control = 0;
+ r->control = '\0';
+ r->escape = '\\';
}
void
@@ -771,6 +775,7 @@ roff_alloc(struct mparse *parse, int options)
r->options = options;
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
r->rstackpos = -1;
+ r->escape = '\\';
return r;
}
@@ -1147,27 +1152,80 @@ roff_res(struct roff *r, struct buf *buf, int ln, int pos)
int expand_count; /* to avoid infinite loops */
int npos; /* position in numeric expression */
int arg_complete; /* argument not interrupted by eol */
+ int done; /* no more input available */
char term; /* character terminating the escape */
- expand_count = 0;
+ /* Search forward for comments. */
+
+ done = 0;
start = buf->buf + pos;
- stesc = strchr(start, '\0') - 1;
- while (stesc-- > start) {
+ for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
+ if (stesc[0] != r->escape || stesc[1] == '\0')
+ continue;
+ stesc++;
+ if (*stesc != '"' && *stesc != '#')
+ continue;
+ cp = strchr(stesc--, '\0') - 1;
+ if (*cp == '\n') {
+ done = 1;
+ cp--;
+ }
+ if (*cp == ' ' || *cp == '\t')
+ mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
+ ln, cp - buf->buf, NULL);
+ while (stesc > start && stesc[-1] == ' ')
+ stesc--;
+ *stesc = '\0';
+ break;
+ }
+ if (stesc == start)
+ return ROFF_CONT;
+ stesc--;
+
+ /* Notice the end of the input. */
+
+ if (*stesc == '\n') {
+ *stesc-- = '\0';
+ done = 1;
+ }
+
+ expand_count = 0;
+ while (stesc >= start) {
/* Search backwards for the next backslash. */
- if (*stesc != '\\')
+ if (*stesc != r->escape) {
+ if (*stesc == '\\') {
+ *stesc = '\0';
+ buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
+ buf->buf, stesc + 1) + 1;
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf);
+ free(buf->buf);
+ buf->buf = nbuf;
+ }
+ stesc--;
continue;
+ }
/* If it is escaped, skip it. */
for (cp = stesc - 1; cp >= start; cp--)
- if (*cp != '\\')
+ if (*cp != r->escape)
break;
if ((stesc - cp) % 2 == 0) {
- stesc = (char *)cp;
+ while (stesc > cp)
+ *stesc-- = '\\';
continue;
+ } else if (stesc[1] != '\0') {
+ *stesc = '\\';
+ } else {
+ *stesc-- = '\0';
+ if (done)
+ continue;
+ else
+ return ROFF_APPEND;
}
/* Decide whether to expand or to check only. */
@@ -1193,6 +1251,7 @@ roff_res(struct roff *r, struct buf *buf, int ln, int pos)
mandoc_vmsg(MANDOCERR_ESC_BAD,
r->parse, ln, (int)(stesc - buf->buf),
"%.*s", (int)(cp - stesc), stesc);
+ stesc--;
continue;
}
@@ -1407,7 +1466,7 @@ roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
/* Expand some escape sequences. */
e = roff_res(r, buf, ln, pos);
- if (e == ROFF_IGN)
+ if (e == ROFF_IGN || e == ROFF_APPEND)
return e;
assert(e == ROFF_CONT);
@@ -2847,7 +2906,7 @@ roff_cc(ROFF_ARGS)
p = buf->buf + pos;
if (*p == '\0' || (r->control = *p++) == '.')
- r->control = 0;
+ r->control = '\0';
if (*p != '\0')
mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
@@ -2857,6 +2916,33 @@ roff_cc(ROFF_ARGS)
}
static enum rofferr
+roff_ec(ROFF_ARGS)
+{
+ const char *p;
+
+ p = buf->buf + pos;
+ if (*p == '\0')
+ r->escape = '\\';
+ else {
+ r->escape = *p;
+ if (*++p != '\0')
+ mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
+ ln, p - buf->buf, "ec ... %s", p);
+ }
+ return ROFF_IGN;
+}
+
+static enum rofferr
+roff_eo(ROFF_ARGS)
+{
+ r->escape = '\0';
+ if (buf->buf[pos] != '\0')
+ mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
+ ln, pos, "eo %s", buf->buf + pos);
+ return ROFF_IGN;
+}
+
+static enum rofferr
roff_tr(ROFF_ARGS)
{
const char *p, *first, *second;
@@ -3383,9 +3469,9 @@ roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
pos = *ppos;
- if (0 != r->control && cp[pos] == r->control)
+ if (r->control != '\0' && cp[pos] == r->control)
pos++;
- else if (0 != r->control)
+ else if (r->control != '\0')
return 0;
else if ('\\' == cp[pos] && '.' == cp[pos + 1])
pos += 2;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 05:56:58 +0000