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| author |   Ingo Schwarze <schwarze@openbsd.org> | 2017-06-06 15:01:04 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@openbsd.org> | 2017-06-06 15:01:04 +0000 |
| commit | 1ab4ebe5662ad82d7ab745fdb9c8124e07630673 (patch) | |
| tree | 4624a848d37ebcc20c00eb4fbebd33ed81c3b593 /roff_term.c | |
| parent | 4a4657f9f40ea60d08ecfb7c12fc46e29440ff58 (diff) | |
| download | mandoc-1ab4ebe5662ad82d7ab745fdb9c8124e07630673.tar.gz mandoc-1ab4ebe5662ad82d7ab745fdb9c8124e07630673.tar.zst mandoc-1ab4ebe5662ad82d7ab745fdb9c8124e07630673.zip | |
Minimal implementation of the roff(7) .ce request (center a number
of input lines without filling).
Contrary to groff, high-level macros abort .ce mode for now.
Diffstat (limited to 'roff_term.c')
| -rw-r--r-- | roff_term.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/roff_term.c b/roff_term.c index a4d48812..eaade486 100644 --- a/roff_term.c +++ b/roff_term.c @@ -1,4 +1,4 @@ -/* $Id: roff_term.c,v 1.7 2017/06/04 22:44:15 schwarze Exp $ */ +/* $Id: roff_term.c,v 1.8 2017/06/06 15:01:04 schwarze Exp $ */ /* * Copyright (c) 2010, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org> * @@ -28,6 +28,7 @@ typedef void (*roff_term_pre_fp)(ROFF_TERM_ARGS); static void roff_term_pre_br(ROFF_TERM_ARGS); +static void roff_term_pre_ce(ROFF_TERM_ARGS); static void roff_term_pre_ft(ROFF_TERM_ARGS); static void roff_term_pre_ll(ROFF_TERM_ARGS); static void roff_term_pre_mc(ROFF_TERM_ARGS); @@ -37,6 +38,7 @@ static void roff_term_pre_ti(ROFF_TERM_ARGS); static const roff_term_pre_fp roff_term_pre_acts[ROFF_MAX] = { roff_term_pre_br, /* br */ + roff_term_pre_ce, /* ce */ roff_term_pre_ft, /* ft */ roff_term_pre_ll, /* ll */ roff_term_pre_mc, /* mc */ @@ -65,6 +67,43 @@ roff_term_pre_br(ROFF_TERM_ARGS) } static void +roff_term_pre_ce(ROFF_TERM_ARGS) +{ + const struct roff_node *nch; + size_t len, lm; + + roff_term_pre_br(p, n); + lm = p->offset; + n = n->child->next; + while (n != NULL) { + nch = n; + len = 0; + do { + if (n->type == ROFFT_TEXT) { + if (len) + len++; + len += term_strlen(p, nch->string); + } + nch = nch->next; + } while (nch != NULL && (n->type != ROFFT_TEXT || + (n->flags & NODE_LINE) == 0)); + p->offset = len >= p->rmargin ? 0 : + lm + len >= p->rmargin ? p->rmargin - len : + (lm + p->rmargin - len) / 2; + while (n != nch) { + if (n->type == ROFFT_TEXT) + term_word(p, n->string); + else + roff_term_pre(p, n); + n = n->next; + } + p->flags |= TERMP_NOSPACE; + term_flushln(p); + } + p->offset = lm; +} + +static void roff_term_pre_ft(ROFF_TERM_ARGS) { switch (*n->child->string) { |