diff options
Diffstat (limited to 'roff_term.c')
| -rw-r--r-- | roff_term.c | 56 |
1 files changed, 39 insertions, 17 deletions
diff --git a/roff_term.c b/roff_term.c index f10bb61d2cdd..115d850fb261 100644 --- a/roff_term.c +++ b/roff_term.c @@ -1,6 +1,6 @@ -/* $Id: roff_term.c,v 1.19 2019/01/04 03:24:33 schwarze Exp $ */ +/* $OpenBSD: roff_term.c,v 1.20 2020/09/03 17:37:06 schwarze Exp $ */ /* - * Copyright (c) 2010,2014,2015,2017-2019 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2010,2014,2015,2017-2020 Ingo Schwarze <schwarze@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -14,6 +14,8 @@ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + #include <sys/types.h> #include <assert.h> @@ -110,9 +112,11 @@ roff_term_pre_ft(ROFF_TERM_ARGS) cp = n->child->string; switch (mandoc_font(cp, (int)strlen(cp))) { case ESCAPE_FONTBOLD: + case ESCAPE_FONTCB: term_fontrepl(p, TERMFONT_BOLD); break; case ESCAPE_FONTITALIC: + case ESCAPE_FONTCI: term_fontrepl(p, TERMFONT_UNDER); break; case ESCAPE_FONTBI: @@ -122,7 +126,7 @@ roff_term_pre_ft(ROFF_TERM_ARGS) term_fontlast(p); break; case ESCAPE_FONTROMAN: - case ESCAPE_FONTCW: + case ESCAPE_FONTCR: term_fontrepl(p, TERMFONT_NONE); break; default: @@ -155,9 +159,13 @@ static void roff_term_pre_po(ROFF_TERM_ARGS) { struct roffsu su; - static int po, polast; + static int po, pouse, polast; int ponew; + /* Revert the currently active page offset. */ + p->tcol->offset -= pouse; + + /* Determine the requested page offset. */ if (n->child != NULL && a2roffsu(n->child->string, &su, SCALE_EM) != NULL) { ponew = term_hen(p, &su); @@ -166,11 +174,15 @@ roff_term_pre_po(ROFF_TERM_ARGS) ponew += po; } else ponew = polast; + + /* Remeber both the previous and the newly requested offset. */ polast = po; po = ponew; - ponew = po - polast + (int)p->tcol->offset; - p->tcol->offset = ponew > 0 ? ponew : 0; + /* Truncate to the range [-offset, 60], remember, and apply it. */ + pouse = po >= 60 ? 60 : + po < -(int)p->tcol->offset ? -(int)p->tcol->offset : po; + p->tcol->offset += pouse; } static void @@ -208,6 +220,7 @@ roff_term_pre_ti(ROFF_TERM_ARGS) { struct roffsu su; const char *cp; + const size_t maxoff = 72; int len, sign; roff_term_pre_br(p, n); @@ -228,17 +241,26 @@ roff_term_pre_ti(ROFF_TERM_ARGS) return; len = term_hen(p, &su); - if (sign == 0) { + switch (sign) { + case 1: + if (p->tcol->offset + len <= maxoff) + p->ti = len; + else if (p->tcol->offset < maxoff) + p->ti = maxoff - p->tcol->offset; + else + p->ti = 0; + break; + case -1: + if ((size_t)len < p->tcol->offset) + p->ti = -len; + else + p->ti = -p->tcol->offset; + break; + default: + if ((size_t)len > maxoff) + len = maxoff; p->ti = len - p->tcol->offset; - p->tcol->offset = len; - } else if (sign == 1) { - p->ti = len; - p->tcol->offset += len; - } else if ((size_t)len < p->tcol->offset) { - p->ti = -len; - p->tcol->offset -= len; - } else { - p->ti = -p->tcol->offset; - p->tcol->offset = 0; + break; } + p->tcol->offset += p->ti; } |