diff options
Diffstat (limited to 'usr.bin/mandoc/man_term.c')
| -rw-r--r-- | usr.bin/mandoc/man_term.c | 1149 |
1 files changed, 1149 insertions, 0 deletions
diff --git a/usr.bin/mandoc/man_term.c b/usr.bin/mandoc/man_term.c new file mode 100644 index 0000000..3bf25ad --- /dev/null +++ b/usr.bin/mandoc/man_term.c @@ -0,0 +1,1149 @@ +/* $OpenBSD: man_term.c,v 1.188 2020/03/13 00:31:05 schwarze Exp $ */ +/* + * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv> + * + * 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 AUTHORS DISCLAIM ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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. + * + * Plain text formatter for man(7), used by mandoc(1) + * for ASCII, UTF-8, PostScript, and PDF output. + */ +#include <sys/types.h> + +#include <assert.h> +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" +#include "man.h" +#include "out.h" +#include "term.h" +#include "term_tag.h" +#include "main.h" + +#define MAXMARGINS 64 /* maximum number of indented scopes */ + +struct mtermp { + int lmargin[MAXMARGINS]; /* margins (incl. vis. 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, \ + struct roff_node *n, \ + const struct roff_meta *meta + +struct man_term_act { + int (*pre)(DECL_ARGS); + void (*post)(DECL_ARGS); + int flags; +#define MAN_NOTEXT (1 << 0) /* Never has text children. */ +}; + +static void print_man_nodelist(DECL_ARGS); +static void print_man_node(DECL_ARGS); +static void print_man_head(struct termp *, + const struct roff_meta *); +static void print_man_foot(struct termp *, + const struct roff_meta *); +static void print_bvspace(struct termp *, + struct roff_node *, int); + +static int pre_B(DECL_ARGS); +static int pre_DT(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_SY(DECL_ARGS); +static int pre_TP(DECL_ARGS); +static int pre_UR(DECL_ARGS); +static int pre_abort(DECL_ARGS); +static int pre_alternate(DECL_ARGS); +static int pre_ign(DECL_ARGS); +static int pre_in(DECL_ARGS); +static int pre_literal(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_SY(DECL_ARGS); +static void post_TP(DECL_ARGS); +static void post_UR(DECL_ARGS); + +static const struct man_term_act man_term_acts[MAN_MAX - MAN_TH] = { + { NULL, NULL, 0 }, /* TH */ + { pre_SH, post_SH, 0 }, /* SH */ + { pre_SS, post_SH, 0 }, /* SS */ + { pre_TP, post_TP, 0 }, /* TP */ + { pre_TP, post_TP, 0 }, /* TQ */ + { pre_abort, NULL, 0 }, /* LP */ + { pre_PP, NULL, 0 }, /* PP */ + { pre_abort, 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 */ + { NULL, NULL, 0 }, /* RE */ + { pre_RS, post_RS, 0 }, /* RS */ + { pre_DT, NULL, 0 }, /* DT */ + { pre_ign, NULL, MAN_NOTEXT }, /* UC */ + { pre_PD, NULL, MAN_NOTEXT }, /* PD */ + { pre_ign, NULL, 0 }, /* AT */ + { pre_in, NULL, MAN_NOTEXT }, /* in */ + { pre_SY, post_SY, 0 }, /* SY */ + { NULL, NULL, 0 }, /* YS */ + { 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_UR, post_UR, 0 }, /* MT */ + { NULL, NULL, 0 }, /* ME */ +}; +static const struct man_term_act *man_term_act(enum roff_tok); + + +static const struct man_term_act * +man_term_act(enum roff_tok tok) +{ + assert(tok >= MAN_TH && tok <= MAN_MAX); + return man_term_acts + (tok - MAN_TH); +} + +void +terminal_man(void *arg, const struct roff_meta *man) +{ + struct mtermp mt; + struct termp *p; + struct roff_node *n, *nc, *nn; + size_t save_defindent; + + p = (struct termp *)arg; + save_defindent = p->defindent; + if (p->synopsisonly == 0 && p->defindent == 0) + p->defindent = 7; + p->tcol->rmargin = p->maxrmargin = p->defrmargin; + term_tab_set(p, NULL); + term_tab_set(p, "T"); + term_tab_set(p, ".5i"); + + memset(&mt, 0, sizeof(mt)); + mt.lmargin[mt.lmargincur] = term_len(p, p->defindent); + mt.offset = term_len(p, p->defindent); + mt.pardist = 1; + + n = man->first->child; + if (p->synopsisonly) { + for (nn = NULL; n != NULL; n = n->next) { + if (n->tok != MAN_SH) + continue; + nc = n->child->child; + if (nc->type != ROFFT_TEXT) + continue; + if (strcmp(nc->string, "SYNOPSIS") == 0) + break; + if (nn == NULL && strcmp(nc->string, "NAME") == 0) + nn = n; + } + if (n == NULL) + n = nn; + p->flags |= TERMP_NOSPACE; + if (n != NULL && (n = n->child->next->child) != NULL) + print_man_nodelist(p, &mt, n, man); + term_newln(p); + } else { + term_begin(p, print_man_head, print_man_foot, man); + p->flags |= TERMP_NOSPACE; + if (n != NULL) + print_man_nodelist(p, &mt, n, man); + term_end(p); + } + p->defindent = save_defindent; +} + +/* + * 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, struct roff_node *n, int pardist) +{ + struct roff_node *nch; + int i; + + term_newln(p); + + if (n->body != NULL && + (nch = roff_node_child(n->body)) != NULL && + nch->type == ROFFT_TBL) + return; + + if (n->parent->tok != MAN_RS && roff_node_prev(n) == NULL) + return; + + for (i = 0; i < pardist; i++) + term_vspace(p); +} + + +static int +pre_abort(DECL_ARGS) +{ + abort(); +} + +static int +pre_ign(DECL_ARGS) +{ + return 0; +} + +static int +pre_I(DECL_ARGS) +{ + term_fontrepl(p, TERMFONT_UNDER); + return 1; +} + +static int +pre_literal(DECL_ARGS) +{ + term_newln(p); + + /* + * 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 (n->parent->tok == MAN_HP && p->tcol->rmargin < p->maxrmargin) { + p->tcol->offset = p->tcol->rmargin; + p->tcol->rmargin = p->maxrmargin; + p->trailspace = 0; + p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND); + p->flags |= TERMP_NOSPACE; + } + return 0; +} + +static int +pre_PD(DECL_ARGS) +{ + struct roffsu su; + + n = n->child; + if (n == NULL) { + mt->pardist = 1; + return 0; + } + assert(n->type == ROFFT_TEXT); + if (a2roffsu(n->string, &su, SCALE_VS) != NULL) + mt->pardist = term_vspan(p, &su); + return 0; +} + +static int +pre_alternate(DECL_ARGS) +{ + enum termfont font[2]; + struct roff_node *nn; + int 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(); + } + for (i = 0, nn = n->child; nn != NULL; nn = nn->next, i = 1 - i) { + term_fontrepl(p, font[i]); + assert(nn->type == ROFFT_TEXT); + term_word(p, nn->string); + if (nn->flags & NODE_EOS) + p->flags |= TERMP_SENTENCE; + if (nn->next != NULL) + p->flags |= TERMP_NOSPACE; + } + return 0; +} + +static int +pre_B(DECL_ARGS) +{ + term_fontrepl(p, TERMFONT_BOLD); + return 1; +} + +static int +pre_OP(DECL_ARGS) +{ + term_word(p, "["); + p->flags |= TERMP_KEEP | TERMP_NOSPACE; + + if ((n = n->child) != NULL) { + term_fontrepl(p, TERMFONT_BOLD); + term_word(p, n->string); + } + if (n != NULL && n->next != NULL) { + term_fontrepl(p, TERMFONT_UNDER); + term_word(p, n->next->string); + } + term_fontrepl(p, TERMFONT_NONE); + p->flags &= ~TERMP_KEEP; + p->flags |= TERMP_NOSPACE; + term_word(p, "]"); + return 0; +} + +static int +pre_in(DECL_ARGS) +{ + struct roffsu su; + const char *cp; + size_t v; + int less; + + term_newln(p); + + if (n->child == NULL) { + p->tcol->offset = mt->offset; + return 0; + } + + cp = n->child->string; + less = 0; + + if (*cp == '-') + less = -1; + else if (*cp == '+') + less = 1; + else + cp--; + + if (a2roffsu(++cp, &su, SCALE_EN) == NULL) + return 0; + + v = term_hen(p, &su); + + if (less < 0) + p->tcol->offset -= p->tcol->offset > v ? v : p->tcol->offset; + else if (less > 0) + p->tcol->offset += v; + else + p->tcol->offset = v; + if (p->tcol->offset > SHRT_MAX) + p->tcol->offset = term_len(p, p->defindent); + + return 0; +} + +static int +pre_DT(DECL_ARGS) +{ + term_tab_set(p, NULL); + term_tab_set(p, "T"); + term_tab_set(p, ".5i"); + return 0; +} + +static int +pre_HP(DECL_ARGS) +{ + struct roffsu su; + const struct roff_node *nn; + int len; + + switch (n->type) { + case ROFFT_BLOCK: + print_bvspace(p, n, mt->pardist); + return 1; + case ROFFT_HEAD: + return 0; + case ROFFT_BODY: + break; + default: + abort(); + } + + if (n->child == NULL) + return 0; + + if ((n->child->flags & NODE_NOFILL) == 0) { + p->flags |= TERMP_NOBREAK | TERMP_BRIND; + p->trailspace = 2; + } + + /* Calculate offset. */ + + if ((nn = n->parent->head->child) != NULL && + a2roffsu(nn->string, &su, SCALE_EN) != NULL) { + len = term_hen(p, &su); + if (len < 0 && (size_t)(-len) > mt->offset) + len = -mt->offset; + else if (len > SHRT_MAX) + len = term_len(p, p->defindent); + mt->lmargin[mt->lmargincur] = len; + } else + len = mt->lmargin[mt->lmargincur]; + + p->tcol->offset = mt->offset; + p->tcol->rmargin = mt->offset + len; + return 1; +} + +static void +post_HP(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + case ROFFT_HEAD: + break; + case ROFFT_BODY: + term_newln(p); + + /* + * Compatibility with a groff bug. + * The .HP macro uses the undocumented .tag request + * which causes a line break and cancels no-space + * mode even if there isn't any output. + */ + + if (n->child == NULL) + term_vspace(p); + + p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND); + p->trailspace = 0; + p->tcol->offset = mt->offset; + p->tcol->rmargin = p->maxrmargin; + break; + default: + abort(); + } +} + +static int +pre_PP(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); + print_bvspace(p, n, mt->pardist); + break; + case ROFFT_HEAD: + return 0; + case ROFFT_BODY: + p->tcol->offset = mt->offset; + break; + default: + abort(); + } + return 1; +} + +static int +pre_IP(DECL_ARGS) +{ + struct roffsu su; + const struct roff_node *nn; + int len; + + switch (n->type) { + case ROFFT_BLOCK: + print_bvspace(p, n, mt->pardist); + return 1; + case ROFFT_HEAD: + p->flags |= TERMP_NOBREAK; + p->trailspace = 1; + break; + case ROFFT_BODY: + p->flags |= TERMP_NOSPACE; + break; + default: + abort(); + } + + /* Calculate the offset from the optional second argument. */ + if ((nn = n->parent->head->child) != NULL && + (nn = nn->next) != NULL && + a2roffsu(nn->string, &su, SCALE_EN) != NULL) { + len = term_hen(p, &su); + if (len < 0 && (size_t)(-len) > mt->offset) + len = -mt->offset; + else if (len > SHRT_MAX) + len = term_len(p, p->defindent); + mt->lmargin[mt->lmargincur] = len; + } else + len = mt->lmargin[mt->lmargincur]; + + switch (n->type) { + case ROFFT_HEAD: + p->tcol->offset = mt->offset; + p->tcol->rmargin = mt->offset + len; + if (n->child != NULL) + print_man_node(p, mt, n->child, meta); + return 0; + case ROFFT_BODY: + p->tcol->offset = mt->offset + len; + p->tcol->rmargin = p->maxrmargin; + break; + default: + abort(); + } + return 1; +} + +static void +post_IP(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + break; + case ROFFT_HEAD: + term_flushln(p); + p->flags &= ~TERMP_NOBREAK; + p->trailspace = 0; + p->tcol->rmargin = p->maxrmargin; + break; + case ROFFT_BODY: + term_newln(p); + p->tcol->offset = mt->offset; + break; + default: + abort(); + } +} + +static int +pre_TP(DECL_ARGS) +{ + struct roffsu su; + struct roff_node *nn; + int len; + + switch (n->type) { + case ROFFT_BLOCK: + if (n->tok == MAN_TP) + print_bvspace(p, n, mt->pardist); + return 1; + case ROFFT_HEAD: + p->flags |= TERMP_NOBREAK | TERMP_BRTRSP; + p->trailspace = 1; + break; + case ROFFT_BODY: + p->flags |= TERMP_NOSPACE; + break; + default: + abort(); + } + + /* Calculate offset. */ + + if ((nn = n->parent->head->child) != NULL && + nn->string != NULL && ! (NODE_LINE & nn->flags) && + a2roffsu(nn->string, &su, SCALE_EN) != NULL) { + len = term_hen(p, &su); + if (len < 0 && (size_t)(-len) > mt->offset) + len = -mt->offset; + else if (len > SHRT_MAX) + len = term_len(p, p->defindent); + mt->lmargin[mt->lmargincur] = len; + } else + len = mt->lmargin[mt->lmargincur]; + + switch (n->type) { + case ROFFT_HEAD: + p->tcol->offset = mt->offset; + p->tcol->rmargin = mt->offset + len; + + /* Don't print same-line elements. */ + nn = n->child; + while (nn != NULL && (nn->flags & NODE_LINE) == 0) + nn = nn->next; + + while (nn != NULL) { + print_man_node(p, mt, nn, meta); + nn = nn->next; + } + return 0; + case ROFFT_BODY: + p->tcol->offset = mt->offset + len; + p->tcol->rmargin = p->maxrmargin; + p->trailspace = 0; + p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP); + break; + default: + abort(); + } + return 1; +} + +static void +post_TP(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + break; + case ROFFT_HEAD: + term_flushln(p); + break; + case ROFFT_BODY: + term_newln(p); + p->tcol->offset = mt->offset; + break; + default: + abort(); + } +} + +static int +pre_SS(DECL_ARGS) +{ + int i; + + switch (n->type) { + case ROFFT_BLOCK: + mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); + mt->offset = term_len(p, p->defindent); + + /* + * No vertical space before the first subsection + * and after an empty subsection. + */ + + if ((n = roff_node_prev(n)) == NULL || + (n->tok == MAN_SS && roff_node_child(n->body) == NULL)) + break; + + for (i = 0; i < mt->pardist; i++) + term_vspace(p); + break; + case ROFFT_HEAD: + term_fontrepl(p, TERMFONT_BOLD); + p->tcol->offset = term_len(p, 3); + p->tcol->rmargin = mt->offset; + p->trailspace = mt->offset; + p->flags |= TERMP_NOBREAK | TERMP_BRIND; + break; + case ROFFT_BODY: + p->tcol->offset = mt->offset; + p->tcol->rmargin = p->maxrmargin; + p->trailspace = 0; + p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND); + break; + default: + break; + } + return 1; +} + +static int +pre_SH(DECL_ARGS) +{ + int i; + + switch (n->type) { + case ROFFT_BLOCK: + mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); + mt->offset = term_len(p, p->defindent); + + /* + * No vertical space before the first section + * and after an empty section. + */ + + if ((n = roff_node_prev(n)) == NULL || + (n->tok == MAN_SH && roff_node_child(n->body) == NULL)) + break; + + for (i = 0; i < mt->pardist; i++) + term_vspace(p); + break; + case ROFFT_HEAD: + term_fontrepl(p, TERMFONT_BOLD); + p->tcol->offset = 0; + p->tcol->rmargin = mt->offset; + p->trailspace = mt->offset; + p->flags |= TERMP_NOBREAK | TERMP_BRIND; + break; + case ROFFT_BODY: + p->tcol->offset = mt->offset; + p->tcol->rmargin = p->maxrmargin; + p->trailspace = 0; + p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND); + break; + default: + abort(); + } + return 1; +} + +static void +post_SH(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + break; + case ROFFT_HEAD: + case ROFFT_BODY: + term_newln(p); + break; + default: + abort(); + } +} + +static int +pre_RS(DECL_ARGS) +{ + struct roffsu su; + + switch (n->type) { + case ROFFT_BLOCK: + term_newln(p); + return 1; + case ROFFT_HEAD: + return 0; + case ROFFT_BODY: + break; + default: + abort(); + } + + n = n->parent->head; + n->aux = SHRT_MAX + 1; + if (n->child == NULL) + n->aux = mt->lmargin[mt->lmargincur]; + else if (a2roffsu(n->child->string, &su, SCALE_EN) != NULL) + n->aux = term_hen(p, &su); + if (n->aux < 0 && (size_t)(-n->aux) > mt->offset) + n->aux = -mt->offset; + else if (n->aux > SHRT_MAX) + n->aux = term_len(p, p->defindent); + + mt->offset += n->aux; + p->tcol->offset = mt->offset; + p->tcol->rmargin = p->maxrmargin; + + if (++mt->lmarginsz < MAXMARGINS) + mt->lmargincur = mt->lmarginsz; + + mt->lmargin[mt->lmargincur] = term_len(p, p->defindent); + return 1; +} + +static void +post_RS(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + case ROFFT_HEAD: + return; + case ROFFT_BODY: + break; + default: + abort(); + } + term_newln(p); + mt->offset -= n->parent->head->aux; + p->tcol->offset = mt->offset; + if (--mt->lmarginsz < MAXMARGINS) + mt->lmargincur = mt->lmarginsz; +} + +static int +pre_SY(DECL_ARGS) +{ + const struct roff_node *nn; + int len; + + switch (n->type) { + case ROFFT_BLOCK: + if ((nn = roff_node_prev(n)) == NULL || nn->tok != MAN_SY) + print_bvspace(p, n, mt->pardist); + return 1; + case ROFFT_HEAD: + case ROFFT_BODY: + break; + default: + abort(); + } + + nn = n->parent->head->child; + len = nn == NULL ? 1 : term_strlen(p, nn->string) + 1; + + switch (n->type) { + case ROFFT_HEAD: + p->tcol->offset = mt->offset; + p->tcol->rmargin = mt->offset + len; + if (n->next->child == NULL || + (n->next->child->flags & NODE_NOFILL) == 0) + p->flags |= TERMP_NOBREAK; + term_fontrepl(p, TERMFONT_BOLD); + break; + case ROFFT_BODY: + mt->lmargin[mt->lmargincur] = len; + p->tcol->offset = mt->offset + len; + p->tcol->rmargin = p->maxrmargin; + p->flags |= TERMP_NOSPACE; + break; + default: + abort(); + } + return 1; +} + +static void +post_SY(DECL_ARGS) +{ + switch (n->type) { + case ROFFT_BLOCK: + break; + case ROFFT_HEAD: + term_flushln(p); + p->flags &= ~TERMP_NOBREAK; + break; + case ROFFT_BODY: + term_newln(p); + p->tcol->offset = mt->offset; + break; + default: + abort(); + } +} + +static int +pre_UR(DECL_ARGS) +{ + return n->type != ROFFT_HEAD; +} + +static void +post_UR(DECL_ARGS) +{ + if (n->type != ROFFT_BLOCK) + return; + + term_word(p, "<"); + p->flags |= TERMP_NOSPACE; + + if (n->child->child != NULL) + print_man_node(p, mt, n->child->child, meta); + + p->flags |= TERMP_NOSPACE; + term_word(p, ">"); +} + +static void +print_man_node(DECL_ARGS) +{ + const struct man_term_act *act; + int c; + + if (n->flags & NODE_ID) + term_tag_write(n, p->line); + + switch (n->type) { + case ROFFT_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 (*n->string == '\0') { + if (p->flags & TERMP_NONEWLINE) + term_newln(p); + else + term_vspace(p); + return; + } else if (*n->string == ' ' && n->flags & NODE_LINE && + (p->flags & TERMP_NONEWLINE) == 0) + term_newln(p); + else if (n->flags & NODE_DELIMC) + p->flags |= TERMP_NOSPACE; + + term_word(p, n->string); + goto out; + case ROFFT_COMMENT: + return; + case ROFFT_EQN: + if ( ! (n->flags & NODE_LINE)) + p->flags |= TERMP_NOSPACE; + term_eqn(p, n->eqn); + if (n->next != NULL && ! (n->next->flags & NODE_LINE)) + p->flags |= TERMP_NOSPACE; + return; + case ROFFT_TBL: + if (p->tbl.cols == NULL) + term_vspace(p); + term_tbl(p, n->span); + return; + default: + break; + } + + if (n->tok < ROFF_MAX) { + roff_term_pre(p, n); + return; + } + + act = man_term_act(n->tok); + if ((act->flags & MAN_NOTEXT) == 0 && n->tok != MAN_SM) + term_fontrepl(p, TERMFONT_NONE); + + c = 1; + if (act->pre != NULL) + c = (*act->pre)(p, mt, n, meta); + + if (c && n->child != NULL) + print_man_nodelist(p, mt, n->child, meta); + + if (act->post != NULL) + (*act->post)(p, mt, n, meta); + if ((act->flags & MAN_NOTEXT) == 0 && n->tok != MAN_SM) + 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 (n->flags & NODE_NOFILL && + ! (p->flags & (TERMP_NOBREAK | TERMP_NONEWLINE)) && + (n->next == NULL || n->next->flags & NODE_LINE)) { + p->flags |= TERMP_BRNEVER | TERMP_NOSPACE; + if (n->string != NULL && *n->string != '\0') + term_flushln(p); + else + term_newln(p); + p->flags &= ~TERMP_BRNEVER; + if (p->tcol->rmargin < p->maxrmargin && + n->parent->tok == MAN_HP) { + p->tcol->offset = p->tcol->rmargin; + p->tcol->rmargin = p->maxrmargin; + } + } + if (n->flags & NODE_EOS) + p->flags |= TERMP_SENTENCE; +} + +static void +print_man_nodelist(DECL_ARGS) +{ + while (n != NULL) { + print_man_node(p, mt, n, meta); + n = n->next; + } +} + +static void +print_man_foot(struct termp *p, const struct roff_meta *meta) +{ + char *title; + size_t datelen, titlen; + + assert(meta->title); + assert(meta->msec); + assert(meta->date); + + term_fontrepl(p, TERMFONT_NONE); + + if (meta->hasbody) + term_vspace(p); + + /* + * Temporary, undocumented option to imitate mdoc(7) output. + * In the bottom right corner, use the operating system + * instead of the title. + */ + + if ( ! p->mdocstyle) { + if (meta->hasbody) { + term_vspace(p); + term_vspace(p); + } + mandoc_asprintf(&title, "%s(%s)", + meta->title, meta->msec); + } else if (meta->os != NULL) { + title = mandoc_strdup(meta->os); + } else { + title = mandoc_strdup(""); + } + datelen = term_strlen(p, meta->date); + + /* Bottom left corner: operating system. */ + + p->flags |= TERMP_NOSPACE | TERMP_NOBREAK; + p->trailspace = 1; + p->tcol->offset = 0; + p->tcol->rmargin = p->maxrmargin > datelen ? + (p->maxrmargin + term_len(p, 1) - datelen) / 2 : 0; + + if (meta->os) + term_word(p, meta->os); + term_flushln(p); + + /* At the bottom in the middle: manual date. */ + + p->tcol->offset = p->tcol->rmargin; + titlen = term_strlen(p, title); + p->tcol->rmargin = p->maxrmargin > titlen ? + p->maxrmargin - titlen : 0; + p->flags |= TERMP_NOSPACE; + + 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->tcol->offset = p->tcol->rmargin; + p->tcol->rmargin = p->maxrmargin; + + term_word(p, title); + term_flushln(p); + + /* + * Reset the terminal state for more output after the footer: + * Some output modes, in particular PostScript and PDF, print + * the header and the footer into a buffer such that it can be + * reused for multiple output pages, then go on to format the + * main text. + */ + + p->tcol->offset = 0; + p->flags = 0; + + free(title); +} + +static void +print_man_head(struct termp *p, const struct roff_meta *meta) +{ + const char *volume; + char *title; + size_t vollen, titlen; + + assert(meta->title); + assert(meta->msec); + + volume = NULL == meta->vol ? "" : meta->vol; + vollen = term_strlen(p, volume); + + /* Top left corner: manual title and section. */ + + mandoc_asprintf(&title, "%s(%s)", meta->title, meta->msec); + titlen = term_strlen(p, title); + + p->flags |= TERMP_NOBREAK | TERMP_NOSPACE; + p->trailspace = 1; + p->tcol->offset = 0; + p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ? + (p->maxrmargin - vollen + term_len(p, 1)) / 2 : + vollen < p->maxrmargin ? p->maxrmargin - vollen : 0; + + term_word(p, title); + term_flushln(p); + + /* At the top in the middle: manual volume. */ + + p->flags |= TERMP_NOSPACE; + p->tcol->offset = p->tcol->rmargin; + p->tcol->rmargin = p->tcol->offset + vollen + titlen < + p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin; + + term_word(p, volume); + term_flushln(p); + + /* Top right corner: title and section, again. */ + + p->flags &= ~TERMP_NOBREAK; + p->trailspace = 0; + if (p->tcol->rmargin + titlen <= p->maxrmargin) { + p->flags |= TERMP_NOSPACE; + p->tcol->offset = p->tcol->rmargin; + p->tcol->rmargin = p->maxrmargin; + term_word(p, title); + term_flushln(p); + } + + p->flags &= ~TERMP_NOSPACE; + p->tcol->offset = 0; + p->tcol->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); + } + free(title); +} |