/* $Id: man_term.c,v 1.144 2014/03/30 21:28:01 schwarze Exp $ */ /* * Copyright (c) 2008-2012 Kristaps Dzonsons * Copyright (c) 2010-2014 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include "mandoc.h" #include "out.h" #include "man.h" #include "term.h" #include "main.h" #define MAXMARGINS 64 /* maximum number of indented scopes */ struct mtermp { int fl; #define MANT_LITERAL (1 << 0) size_t lmargin[MAXMARGINS]; /* margins (incl. visible page) */ int lmargincur; /* index of current margin */ int lmarginsz; /* actual number of nested margins */ size_t offset; /* default offset to visible page */ int pardist; /* vert. space before par., unit: [v] */ }; #define DECL_ARGS struct termp *p, \ struct mtermp *mt, \ const struct man_node *n, \ const struct man_meta *meta struct termact { int (*pre)(DECL_ARGS); void (*post)(DECL_ARGS); int flags; #define MAN_NOTEXT (1 << 0) /* Never has text children. */ }; static int a2width(const struct termp *, const char *); static size_t a2height(const struct termp *, const char *); static void print_man_nodelist(DECL_ARGS); static void print_man_node(DECL_ARGS); static void print_man_head(struct termp *, const void *); static void print_man_foot(struct termp *, const void *); static void print_bvspace(struct termp *, const struct man_node *, int); static int pre_B(DECL_ARGS); static int pre_HP(DECL_ARGS); static int pre_I(DECL_ARGS); static int pre_IP(DECL_ARGS); static int pre_OP(DECL_ARGS); static int pre_PD(DECL_ARGS); static int pre_PP(DECL_ARGS); static int pre_RS(DECL_ARGS); static int pre_SH(DECL_ARGS); static int pre_SS(DECL_ARGS); static int pre_TP(DECL_ARGS); static int pre_UR(DECL_ARGS); static int pre_alternate(DECL_ARGS); static int pre_ft(DECL_ARGS); static int pre_ign(DECL_ARGS); static int pre_in(DECL_ARGS); static int pre_literal(DECL_ARGS); static int pre_ll(DECL_ARGS); static int pre_sp(DECL_ARGS); static void post_IP(DECL_ARGS); static void post_HP(DECL_ARGS); static void post_RS(DECL_ARGS); static void post_SH(DECL_ARGS); static void post_SS(DECL_ARGS); static void post_TP(DECL_ARGS); static void post_UR(DECL_ARGS); static const struct termact termacts[MAN_MAX] = { { pre_sp, NULL, MAN_NOTEXT }, /* br */ { NULL, NULL, 0 }, /* TH */ { pre_SH, post_SH, 0 }, /* SH */ { pre_SS, post_SS, 0 }, /* SS */ { pre_TP, post_TP, 0 }, /* TP */ { pre_PP, NULL, 0 }, /* LP */ { pre_PP, NULL, 0 }, /* PP */ { pre_PP, NULL, 0 }, /* P */ { pre_IP, post_IP, 0 }, /* IP */ { pre_HP, post_HP, 0 }, /* HP */ { NULL, NULL, 0 }, /* SM */ { pre_B, NULL, 0 }, /* SB */ { pre_alternate, NULL, 0 }, /* BI */ { pre_alternate, NULL, 0 }, /* IB */ { pre_alternate, NULL, 0 }, /* BR */ { pre_alternate, NULL, 0 }, /* RB */ { NULL, NULL, 0 }, /* R */ { pre_B, NULL, 0 }, /* B */ { pre_I, NULL, 0 }, /* I */ { pre_alternate, NULL, 0 }, /* IR */ { pre_alternate, NULL, 0 }, /* RI */ { pre_ign, NULL, MAN_NOTEXT }, /* na */ { pre_sp, NULL, MAN_NOTEXT }, /* sp */ { pre_literal, NULL, 0 }, /* nf */ { pre_literal, NULL, 0 }, /* fi */ { NULL, NULL, 0 }, /* RE */ { pre_RS, post_RS, 0 }, /* RS */ { pre_ign, NULL, 0 }, /* DT */ { pre_ign, NULL, 0 }, /* UC */ { pre_PD, NULL, MAN_NOTEXT }, /* PD */ { pre_ign, NULL, 0 }, /* AT */ { pre_in, NULL, MAN_NOTEXT }, /* in */ { pre_ft, NULL, MAN_NOTEXT }, /* ft */ { pre_OP, NULL, 0 }, /* OP */ { pre_literal, NULL, 0 }, /* EX */ { pre_literal, NULL, 0 }, /* EE */ { pre_UR, post_UR, 0 }, /* UR */ { NULL, NULL, 0 }, /* UE */ { pre_ll, NULL, MAN_NOTEXT }, /* ll */ }; void terminal_man(void *arg, const struct man *man) { struct termp *p; const struct man_node *n; const struct man_meta *meta; struct mtermp mt; p = (struct termp *)arg; if (0 == p->defindent) p->defindent = 7; p->overstep = 0; p->maxrmargin = p->defrmargin; p->tabwidth = term_len(p, 5); if (NULL == p->symtab) p->symtab = mchars_alloc(); n = man_node(man); meta = man_meta(man); term_begin(p, print_man_head, print_man_foot, meta); p->flags |= TERMP_NOSPACE; memset(&mt, 0, sizeof(struct mtermp)); mt.lmargin[mt.lmargincur] = term_len(p, p->defindent); mt.offset = term_len(p, p->defindent); mt.pardist = 1; if (n->child) print_man_nodelist(p, &mt, n->child, meta); term_end(p); } static size_t a2height(const struct termp *p, const char *cp) { struct roffsu su; if ( ! a2roffsu(cp, &su, SCALE_VS)) SCALE_VS_INIT(&su, atoi(cp)); return(term_vspan(p, &su)); } static int a2width(const struct termp *p, const char *cp) { struct roffsu su; if ( ! a2roffsu(cp, &su, SCALE_BU)) return(-1); return((int)term_hspan(p, &su)); } /* * Printing leading vertical space before a block. * This is used for the paragraph macros. * The rules are pretty simple, since there's very little nesting going * on here. Basically, if we're the first within another block (SS/SH), * then don't emit vertical space. If we are (RS), then do. If not the * first, print it. */ static void print_bvspace(struct termp *p, const struct man_node *n, int pardist) { int i; term_newln(p); if (n->body && n->body->child) if (MAN_TBL == n->body->child->type) return; if (MAN_ROOT == n->parent->type || MAN_RS != n->parent->tok) if (NULL == n->prev) return; for (i = 0; i < pardist; i++) term_vspace(p); } /* ARGSUSED */ static int pre_ign(DECL_ARGS) { return(0); } /* ARGSUSED */ static int pre_ll(DECL_ARGS) { term_setwidth(p, n->nchild ? n->child->string : NULL); return(0); } /* ARGSUSED */ static int pre_I(DECL_ARGS) { term_fontrepl(p, TERMFONT_UNDER); return(1); } /* ARGSUSED */ static int pre_literal(DECL_ARGS) { term_newln(p); if (MAN_nf == n->tok || MAN_EX == n->tok) mt->fl |= MANT_LITERAL; else mt->fl &= ~MANT_LITERAL; /* * Unlike .IP and .TP, .HP does not have a HEAD. * So in case a second call to term_flushln() is needed, * indentation has to be set up explicitly. */ if (MAN_HP == n->parent->tok && p->rmargin < p->maxrmargin) { p->offset = p->rmargin; p->rmargin = p->maxrmargin; p->trailspace = 0; p->flags &= ~TERMP_NOBREAK; p->flags |= TERMP_NOSPACE; } return(0); } /* ARGSUSED */ static int pre_PD(DECL_ARGS) { n = n->child; if (0 == n) { mt->pardist = 1; return(0); } assert(MAN_TEXT == n->type); mt->pardist = atoi(n->string); return(0); } /* ARGSUSED */ static int pre_alternate(DECL_ARGS) { enum termfont font[2]; const struct man_node *nn; int savelit, i; switch (n->tok) { case (MAN_RB): font[0] = TERMFONT_NONE; font[1] = TERMFONT_BOLD; break; case (MAN_RI): font[0] = TERMFONT_NONE; font[1] = TERMFONT_UNDER; break; case (MAN_BR): font[0] = TERMFONT_BOLD; font[1] = TERMFONT_NONE; break; case (MAN_BI): font[0] = TERMFONT_BOLD; font[1] = TERMFONT_UNDER; break; case (MAN_IR): font[0] = TERMFONT_UNDER; font[1] = TERMFONT_NONE; break; case (MAN_IB): font[0] = TERMFONT_UNDER; font[1] = TERMFONT_BOLD; break; default: abort(); } savelit = MANT_LITERAL & mt->fl; mt->fl &= ~MANT_LITERAL; for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) { term_fontrepl(p, font[i]); if (savelit && NULL == nn->next) mt->fl |= MANT_LITERAL; print_man_node(p, mt, nn, meta); if (nn->next) p->flags |= TERMP_NOSPACE; } return(0); } /* ARGSUSED */ static int pre_B(DECL_ARGS) { term_fontrepl(p, TERMFONT_BOLD); return(1); } /* ARGSUSED */ static int pre_OP(DECL_ARGS) { term_word(p, "["); p->flags |= TERMP_NOSPACE; if (NULL != (n = n->child)) { term_fontrepl(p, TERMFONT_BOLD); term_word(p, n->string); } if (NULL != n && NULL != n->next) { term_fontrepl(p, TERMFONT_UNDER); term_word(p, n->next->string); } term_fontrepl(p, TERMFONT_NONE); p->flags |= TERMP_NOSPACE; term_word(p, "]"); return(0); } /* ARGSUSED */ static int pre_ft(DECL_ARGS) { const char *cp; if (NULL == n->child) { term_fontlast(p); return(0); } cp = n->child->string; switch (*cp) { case ('4'): /* FALLTHROUGH */ case ('3'): /* FALLTHROUGH */ case ('B'): term_fontrepl(p, TERMFONT_BOLD); break; case ('2'): /* FALLTHROUGH */ case ('I'): term_fontrepl(p, TERMFONT_UNDER); break; case ('P'): term_fontlast(p); break; case ('1'): /* FALLTHROUGH */ case ('C'): /* FALLTHROUGH */ case ('R'): term_fontrepl(p, TERMFONT_NONE); break; default: break; } return(0); } /* ARGSUSED */ static int pre_in(DECL_ARGS) { int len, less; size_t v; const char *cp; term_newln(p); if (NULL == n->child) { p->offset = mt->offset; return(0); } cp = n->child->string; less = 0; if ('-' == *cp) less = -1; else if ('+' == *cp) less = 1; else cp--; if ((len = a2width(p, ++cp)) < 0) return(0); v = (size_t)len; if (less < 0) p->offset -= p->offset > v ? v : p->offset; else if (less > 0) p->offset += v; else p->offset = v; /* Don't let this creep beyond the right margin. */ if (p->offset > p->rmargin) p->offset = p->rmargin; return(0); } /* ARGSUSED */ static int pre_sp(DECL_ARGS) { char *s; size_t i, len; int neg; if ((NULL == n->prev && n->parent)) { switch (n->parent->tok) { case (MAN_SH): /* FALLTHROUGH */ case (MAN_SS): /* FALLTHROUGH */ case (MAN_PP): /* FALLTHROUGH */ case (MAN_LP): /* FALLTHROUGH */ case (MAN_P): /* FALLTHROUGH */ return(0); default: break; } } neg = 0; switch (n->tok) { case (MAN_br): len = 0; break; default: if (NULL == n->child) { len = 1; break; } s = n->child->string; if ('-' == *s) { neg = 1; s++; } len = a2height(p, s); break; } if (0 == len) term_newln(p); else if (neg) p->skipvsp += len; else for (i = 0; i < len; i++) term_vspace(p); return(0); } /* ARGSUSED */ static int pre_HP(DECL_ARGS) { size_t len, one; int ival; const struct man_node *nn; switch (n->type) { case (MAN_BLOCK): print_bvspace(p, n, mt->pardist); return(1); case (MAN_BODY): break; default: return(0); } if ( ! (MANT_LITERAL & mt->fl)) { p->flags |= TERMP_NOBREAK; p->trailspace = 2; } len = mt->lmargin[mt->lmargincur]; ival = -1; /* Calculate offset. */ if (NULL != (nn = n->parent->head->child)) if ((ival = a2width(p, nn->string)) >= 0) len = (size_t)ival; one = term_len(p, 1); if (len < one) len = one; p->offset = mt->offset; p->rmargin = mt->offset + len; if (ival >= 0) mt->lmargin[mt->lmargincur] = (size_t)ival; return(1); } /* ARGSUSED */ static void post_HP(DECL_ARGS) { switch (n->type) { case (MAN_BODY): term_newln(p); p->flags &= ~TERMP_NOBREAK; p->trailspace = 0; p->offset = mt->offset; p->rmargin = p->maxrmargin; break; default: break; } } /* ARGSUSED */ static int pre_PP(DECL_ARGS) { switch (n->type) { case (MAN_BLOCK): mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); print_bvspace(p, n, mt->pardist); break; default: p->offset = mt->offset; break; } return(MAN_HEAD != n->type); } /* ARGSUSED */ static int pre_IP(DECL_ARGS) { const struct man_node *nn; size_t len; int savelit, ival; switch (n->type) { case (MAN_BODY): p->flags |= TERMP_NOSPACE; break; case (MAN_HEAD): p->flags |= TERMP_NOBREAK; p->trailspace = 1; break; case (MAN_BLOCK): print_bvspace(p, n, mt->pardist); /* FALLTHROUGH */ default: return(1); } len = mt->lmargin[mt->lmargincur]; ival = -1; /* Calculate the offset from the optional second argument. */ if (NULL != (nn = n->parent->head->child)) if (NULL != (nn = nn->next)) if ((ival = a2width(p, nn->string)) >= 0) len = (size_t)ival; switch (n->type) { case (MAN_HEAD): /* Handle zero-width lengths. */ if (0 == len) len = term_len(p, 1); p->offset = mt->offset; p->rmargin = mt->offset + len; if (ival < 0) break; /* Set the saved left-margin. */ mt->lmargin[mt->lmargincur] = (size_t)ival; savelit = MANT_LITERAL & mt->fl; mt->fl &= ~MANT_LITERAL; if (n->child) print_man_node(p, mt, n->child, meta); if (savelit) mt->fl |= MANT_LITERAL; return(0); case (MAN_BODY): p->offset = mt->offset + len; p->rmargin = p->maxrmargin > p->offset ? p->maxrmargin : p->offset; break; default: break; } return(1); } /* ARGSUSED */ static void post_IP(DECL_ARGS) { switch (n->type) { case (MAN_HEAD): term_flushln(p); p->flags &= ~TERMP_NOBREAK; p->trailspace = 0; p->rmargin = p->maxrmargin; break; case (MAN_BODY): term_newln(p); p->offset = mt->offset; break; default: break; } } /* ARGSUSED */ static int pre_TP(DECL_ARGS) { const struct man_node *nn; size_t len; int savelit, ival; switch (n->type) { case (MAN_HEAD): p->flags |= TERMP_NOBREAK; p->trailspace = 1; break; case (MAN_BODY): p->flags |= TERMP_NOSPACE; break; case (MAN_BLOCK): print_bvspace(p, n, mt->pardist); /* FALLTHROUGH */ default: return(1); } len = (size_t)mt->lmargin[mt->lmargincur]; ival = -1; /* Calculate offset. */ if (NULL != (nn = n->parent->head->child)) if (nn->string && 0 == (MAN_LINE & nn->flags)) if ((ival = a2width(p, nn->string)) >= 0) len = (size_t)ival; switch (n->type) { case (MAN_HEAD): /* Handle zero-length properly. */ if (0 == len) len = term_len(p, 1); p->offset = mt->offset; p->rmargin = mt->offset + len; savelit = MANT_LITERAL & mt->fl; mt->fl &= ~MANT_LITERAL; /* Don't print same-line elements. */ nn = n->child; while (NULL != nn && 0 == (MAN_LINE & nn->flags)) nn = nn->next; while (NULL != nn) { print_man_node(p, mt, nn, meta); nn = nn->next; } if (savelit) mt->fl |= MANT_LITERAL; if (ival >= 0) mt->lmargin[mt->lmargincur] = (size_t)ival; return(0); case (MAN_BODY): p->offset = mt->offset + len; p->rmargin = p->maxrmargin > p->offset ? p->maxrmargin : p->offset; p->trailspace = 0; p->flags &= ~TERMP_NOBREAK; break; default: break; } return(1); } /* ARGSUSED */ static void post_TP(DECL_ARGS) { switch (n->type) { case (MAN_HEAD): term_flushln(p); break; case (MAN_BODY): term_newln(p); p->offset = mt->offset; break; default: break; } } /* ARGSUSED */ static int pre_SS(DECL_ARGS) { int i; switch (n->type) { case (MAN_BLOCK): mt->fl &= ~MANT_LITERAL; mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); mt->offset = term_len(p, p->defindent); /* If following a prior empty `SS', no vspace. */ if (n->prev && MAN_SS == n->prev->tok) if (NULL == n->prev->body->child) break; if (NULL == n->prev) break; for (i = 0; i < mt->pardist; i++) term_vspace(p); break; case (MAN_HEAD): term_fontrepl(p, TERMFONT_BOLD); p->offset = term_len(p, 3); break; case (MAN_BODY): p->offset = mt->offset; break; default: break; } return(1); } /* ARGSUSED */ static void post_SS(DECL_ARGS) { switch (n->type) { case (MAN_HEAD): term_newln(p); break; case (MAN_BODY): term_newln(p); break; default: break; } } /* ARGSUSED */ static int pre_SH(DECL_ARGS) { int i; switch (n->type) { case (MAN_BLOCK): mt->fl &= ~MANT_LITERAL; mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); mt->offset = term_len(p, p->defindent); /* If following a prior empty `SH', no vspace. */ if (n->prev && MAN_SH == n->prev->tok) if (NULL == n->prev->body->child) break; /* If the first macro, no vspae. */ if (NULL == n->prev) break; for (i = 0; i < mt->pardist; i++) term_vspace(p); break; case (MAN_HEAD): term_fontrepl(p, TERMFONT_BOLD); p->offset = 0; break; case (MAN_BODY): p->offset = mt->offset; break; default: break; } return(1); } /* ARGSUSED */ static void post_SH(DECL_ARGS) { switch (n->type) { case (MAN_HEAD): term_newln(p); break; case (MAN_BODY): term_newln(p); break; default: break; } } /* ARGSUSED */ static int pre_RS(DECL_ARGS) { int ival; size_t sz; switch (n->type) { case (MAN_BLOCK): term_newln(p); return(1); case (MAN_HEAD): return(0); default: break; } sz = term_len(p, p->defindent); if (NULL != (n = n->parent->head->child)) if ((ival = a2width(p, n->string)) >= 0) sz = (size_t)ival; mt->offset += sz; p->offset = mt->offset; p->rmargin = p->maxrmargin > p->offset ? p->maxrmargin : p->offset; if (++mt->lmarginsz < MAXMARGINS) mt->lmargincur = mt->lmarginsz; mt->lmargin[mt->lmargincur] = mt->lmargin[mt->lmargincur - 1]; return(1); } /* ARGSUSED */ static void post_RS(DECL_ARGS) { int ival; size_t sz; switch (n->type) { case (MAN_BLOCK): return; case (MAN_HEAD): return; default: term_newln(p); break; } sz = term_len(p, p->defindent); if (NULL != (n = n->parent->head->child)) if ((ival = a2width(p, n->string)) >= 0) sz = (size_t)ival; mt->offset = mt->offset < sz ? 0 : mt->offset - sz; p->offset = mt->offset; if (--mt->lmarginsz < MAXMARGINS) mt->lmargincur = mt->lmarginsz; } /* ARGSUSED */ static int pre_UR(DECL_ARGS) { return (MAN_HEAD != n->type); } /* ARGSUSED */ static void post_UR(DECL_ARGS) { if (MAN_BLOCK != n->type) return; term_word(p, "<"); p->flags |= TERMP_NOSPACE; if (NULL != n->child->child) print_man_node(p, mt, n->child->child, meta); p->flags |= TERMP_NOSPACE; term_word(p, ">"); } static void print_man_node(DECL_ARGS) { size_t rm, rmax; int c; switch (n->type) { case(MAN_TEXT): /* * If we have a blank line, output a vertical space. * If we have a space as the first character, break * before printing the line's data. */ if ('\0' == *n->string) { term_vspace(p); return; } else if (' ' == *n->string && MAN_LINE & n->flags) term_newln(p); term_word(p, n->string); goto out; case (MAN_EQN): term_eqn(p, n->eqn); return; case (MAN_TBL): /* * Tables are preceded by a newline. Then process a * table line, which will cause line termination, */ if (TBL_SPAN_FIRST & n->span->flags) term_newln(p); term_tbl(p, n->span); return; default: break; } if ( ! (MAN_NOTEXT & termacts[n->tok].flags)) term_fontrepl(p, TERMFONT_NONE); c = 1; if (termacts[n->tok].pre) c = (*termacts[n->tok].pre)(p, mt, n, meta); if (c && n->child) print_man_nodelist(p, mt, n->child, meta); if (termacts[n->tok].post) (*termacts[n->tok].post)(p, mt, n, meta); if ( ! (MAN_NOTEXT & termacts[n->tok].flags)) term_fontrepl(p, TERMFONT_NONE); out: /* * If we're in a literal context, make sure that words * together on the same line stay together. This is a * POST-printing call, so we check the NEXT word. Since * -man doesn't have nested macros, we don't need to be * more specific than this. */ if (MANT_LITERAL & mt->fl && ! (TERMP_NOBREAK & p->flags) && (NULL == n->next || MAN_LINE & n->next->flags)) { rm = p->rmargin; rmax = p->maxrmargin; p->rmargin = p->maxrmargin = TERM_MAXMARGIN; p->flags |= TERMP_NOSPACE; if (NULL != n->string && '\0' != *n->string) term_flushln(p); else term_newln(p); if (rm < rmax && n->parent->tok == MAN_HP) { p->offset = rm; p->rmargin = rmax; } else p->rmargin = rm; p->maxrmargin = rmax; } if (MAN_EOS & n->flags) p->flags |= TERMP_SENTENCE; } static void print_man_nodelist(DECL_ARGS) { print_man_node(p, mt, n, meta); if ( ! n->next) return; print_man_nodelist(p, mt, n->next, meta); } static void print_man_foot(struct termp *p, const void *arg) { char title[BUFSIZ]; size_t datelen; const struct man_meta *meta; meta = (const struct man_meta *)arg; assert(meta->title); assert(meta->msec); assert(meta->date); term_fontrepl(p, TERMFONT_NONE); term_vspace(p); /* * Temporary, undocumented option to imitate mdoc(7) output. * In the bottom right corner, use the source instead of * the title. */ if ( ! p->mdocstyle) { term_vspace(p); term_vspace(p); snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec); } else if (meta->source) { strlcpy(title, meta->source, BUFSIZ); } else { title[0] = '\0'; } datelen = term_strlen(p, meta->date); /* Bottom left corner: manual source. */ p->flags |= TERMP_NOSPACE | TERMP_NOBREAK; p->trailspace = 1; p->offset = 0; p->rmargin = (p->maxrmargin - datelen + term_len(p, 1)) / 2; if (meta->source) term_word(p, meta->source); term_flushln(p); /* At the bottom in the middle: manual date. */ p->flags |= TERMP_NOSPACE; p->offset = p->rmargin; p->rmargin = p->maxrmargin - term_strlen(p, title); if (p->offset + datelen >= p->rmargin) p->rmargin = p->offset + datelen; term_word(p, meta->date); term_flushln(p); /* Bottom right corner: manual title and section. */ p->flags &= ~TERMP_NOBREAK; p->flags |= TERMP_NOSPACE; p->trailspace = 0; p->offset = p->rmargin; p->rmargin = p->maxrmargin; term_word(p, title); term_flushln(p); } static void print_man_head(struct termp *p, const void *arg) { char buf[BUFSIZ], title[BUFSIZ]; size_t buflen, titlen; const struct man_meta *meta; meta = (const struct man_meta *)arg; assert(meta->title); assert(meta->msec); if (meta->vol) strlcpy(buf, meta->vol, BUFSIZ); else buf[0] = '\0'; buflen = term_strlen(p, buf); /* Top left corner: manual title and section. */ snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec); titlen = term_strlen(p, title); p->flags |= TERMP_NOBREAK | TERMP_NOSPACE; p->trailspace = 1; p->offset = 0; p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ? (p->maxrmargin - term_strlen(p, buf) + term_len(p, 1)) / 2 : p->maxrmargin - buflen; term_word(p, title); term_flushln(p); /* At the top in the middle: manual volume. */ p->flags |= TERMP_NOSPACE; p->offset = p->rmargin; p->rmargin = p->offset + buflen + titlen < p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin; term_word(p, buf); term_flushln(p); /* Top right corner: title and section, again. */ p->flags &= ~TERMP_NOBREAK; p->trailspace = 0; if (p->rmargin + titlen <= p->maxrmargin) { p->flags |= TERMP_NOSPACE; p->offset = p->rmargin; p->rmargin = p->maxrmargin; term_word(p, title); term_flushln(p); } p->flags &= ~TERMP_NOSPACE; p->offset = 0; p->rmargin = p->maxrmargin; /* * Groff prints three blank lines before the content. * Do the same, except in the temporary, undocumented * mode imitating mdoc(7) output. */ term_vspace(p); if ( ! p->mdocstyle) { term_vspace(p); term_vspace(p); } }