Implement line breaking of the generated HTML code at space characters

[mandoc.git] / man_term.c

diff --git a/man_term.c b/man_term.c
index 8272456c14d09666100ec89b2441f6b4384044f5..672ab4163228dc5ce374d2d1a6c54fbaefe3c716 100644 (file)
--- a/man_term.c
+++ b/man_term.c
@@ -1,4 +1,4 @@
-/*     $Id: man_term.c,v 1.174 2015/04/04 11:44:43 schwarze Exp $ */
+/*     $Id: man_term.c,v 1.188 2017/01/10 13:47:00 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
@@ -138,28 +138,23 @@ static    const struct termact termacts[MAN_MAX] = {
 
 
 void
-terminal_man(void *arg, const struct man *man)
+terminal_man(void *arg, const struct roff_man *man)
 {
        struct termp            *p;
-       const struct roff_meta  *meta;
        struct roff_node        *n;
        struct mtermp            mt;
 
        p = (struct termp *)arg;
-
        p->overstep = 0;
        p->rmargin = p->maxrmargin = p->defrmargin;
        p->tabwidth = term_len(p, 5);
 
-       n = man_node(man)->child;
-       meta = man_meta(man);
-
        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;
 
+       n = man->first->child;
        if (p->synopsisonly) {
                while (n != NULL) {
                        if (n->tok == MAN_SH &&
@@ -167,7 +162,8 @@ terminal_man(void *arg, const struct man *man)
                            !strcmp(n->child->child->string, "SYNOPSIS")) {
                                if (n->child->next->child != NULL)
                                        print_man_nodelist(p, &mt,
-                                           n->child->next->child, meta);
+                                           n->child->next->child,
+                                           &man->meta);
                                term_newln(p);
                                break;
                        }
@@ -176,10 +172,10 @@ terminal_man(void *arg, const struct man *man)
        } else {
                if (p->defindent == 0)
                        p->defindent = 7;
-               term_begin(p, print_man_head, print_man_foot, meta);
+               term_begin(p, print_man_head, print_man_foot, &man->meta);
                p->flags |= TERMP_NOSPACE;
                if (n != NULL)
-                       print_man_nodelist(p, &mt, n, meta);
+                       print_man_nodelist(p, &mt, n, &man->meta);
                term_end(p);
        }
 }
@@ -216,15 +212,15 @@ static int
 pre_ign(DECL_ARGS)
 {
 
-       return(0);
+       return 0;
 }
 
 static int
 pre_ll(DECL_ARGS)
 {
 
-       term_setwidth(p, n->nchild ? n->child->string : NULL);
-       return(0);
+       term_setwidth(p, n->child != NULL ? n->child->string : NULL);
+       return 0;
 }
 
 static int
@@ -232,7 +228,7 @@ pre_I(DECL_ARGS)
 {
 
        term_fontrepl(p, TERMFONT_UNDER);
-       return(1);
+       return 1;
 }
 
 static int
@@ -259,7 +255,7 @@ pre_literal(DECL_ARGS)
                p->flags |= TERMP_NOSPACE;
        }
 
-       return(0);
+       return 0;
 }
 
 static int
@@ -270,12 +266,12 @@ pre_PD(DECL_ARGS)
        n = n->child;
        if (n == NULL) {
                mt->pardist = 1;
-               return(0);
+               return 0;
        }
        assert(n->type == ROFFT_TEXT);
        if (a2roffsu(n->string, &su, SCALE_VS))
                mt->pardist = term_vspan(p, &su);
-       return(0);
+       return 0;
 }
 
 static int
@@ -321,12 +317,15 @@ pre_alternate(DECL_ARGS)
                term_fontrepl(p, font[i]);
                if (savelit && NULL == nn->next)
                        mt->fl |= MANT_LITERAL;
-               print_man_node(p, mt, nn, meta);
+               assert(nn->type == ROFFT_TEXT);
+               term_word(p, nn->string);
+               if (nn->flags & NODE_EOS)
+                       p->flags |= TERMP_SENTENCE;
                if (nn->next)
                        p->flags |= TERMP_NOSPACE;
        }
 
-       return(0);
+       return 0;
 }
 
 static int
@@ -334,7 +333,7 @@ pre_B(DECL_ARGS)
 {
 
        term_fontrepl(p, TERMFONT_BOLD);
-       return(1);
+       return 1;
 }
 
 static int
@@ -356,7 +355,7 @@ pre_OP(DECL_ARGS)
        term_fontrepl(p, TERMFONT_NONE);
        p->flags |= TERMP_NOSPACE;
        term_word(p, "]");
-       return(0);
+       return 0;
 }
 
 static int
@@ -366,20 +365,17 @@ pre_ft(DECL_ARGS)
 
        if (NULL == n->child) {
                term_fontlast(p);
-               return(0);
+               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;
@@ -387,16 +383,14 @@ pre_ft(DECL_ARGS)
                term_fontlast(p);
                break;
        case '1':
-               /* FALLTHROUGH */
        case 'C':
-               /* FALLTHROUGH */
        case 'R':
                term_fontrepl(p, TERMFONT_NONE);
                break;
        default:
                break;
        }
-       return(0);
+       return 0;
 }
 
 static int
@@ -411,7 +405,7 @@ pre_in(DECL_ARGS)
 
        if (NULL == n->child) {
                p->offset = mt->offset;
-               return(0);
+               return 0;
        }
 
        cp = n->child->string;
@@ -425,9 +419,9 @@ pre_in(DECL_ARGS)
                cp--;
 
        if ( ! a2roffsu(++cp, &su, SCALE_EN))
-               return(0);
+               return 0;
 
-       v = term_hspan(p, &su);
+       v = (term_hspan(p, &su) + 11) / 24;
 
        if (less < 0)
                p->offset -= p->offset > v ? v : p->offset;
@@ -438,7 +432,7 @@ pre_in(DECL_ARGS)
        if (p->offset > SHRT_MAX)
                p->offset = term_len(p, p->defindent);
 
-       return(0);
+       return 0;
 }
 
 static int
@@ -450,16 +444,11 @@ pre_sp(DECL_ARGS)
        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);
+                       return 0;
                default:
                        break;
                }
@@ -483,7 +472,18 @@ pre_sp(DECL_ARGS)
                for (i = 0; i < len; i++)
                        term_vspace(p);
 
-       return(0);
+       /*
+        * Handle an explicit break request in the same way
+        * as an overflowing line.
+        */
+
+       if (p->flags & TERMP_BRIND) {
+               p->offset = p->rmargin;
+               p->rmargin = p->maxrmargin;
+               p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
+       }
+
+       return 0;
 }
 
 static int
@@ -496,11 +496,11 @@ pre_HP(DECL_ARGS)
        switch (n->type) {
        case ROFFT_BLOCK:
                print_bvspace(p, n, mt->pardist);
-               return(1);
+               return 1;
        case ROFFT_BODY:
                break;
        default:
-               return(0);
+               return 0;
        }
 
        if ( ! (MANT_LITERAL & mt->fl)) {
@@ -512,7 +512,7 @@ pre_HP(DECL_ARGS)
 
        if ((nn = n->parent->head->child) != NULL &&
            a2roffsu(nn->string, &su, SCALE_EN)) {
-               len = term_hspan(p, &su);
+               len = term_hspan(p, &su) / 24;
                if (len < 0 && (size_t)(-len) > mt->offset)
                        len = -mt->offset;
                else if (len > SHRT_MAX)
@@ -523,7 +523,7 @@ pre_HP(DECL_ARGS)
 
        p->offset = mt->offset;
        p->rmargin = mt->offset + len;
-       return(1);
+       return 1;
 }
 
 static void
@@ -568,7 +568,7 @@ pre_PP(DECL_ARGS)
                break;
        }
 
-       return(n->type != ROFFT_HEAD);
+       return n->type != ROFFT_HEAD;
 }
 
 static int
@@ -590,14 +590,14 @@ pre_IP(DECL_ARGS)
                print_bvspace(p, n, mt->pardist);
                /* FALLTHROUGH */
        default:
-               return(1);
+               return 1;
        }
 
        /* 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)) {
-               len = term_hspan(p, &su);
+               len = term_hspan(p, &su) / 24;
                if (len < 0 && (size_t)(-len) > mt->offset)
                        len = -mt->offset;
                else if (len > SHRT_MAX)
@@ -620,7 +620,7 @@ pre_IP(DECL_ARGS)
                if (savelit)
                        mt->fl |= MANT_LITERAL;
 
-               return(0);
+               return 0;
        case ROFFT_BODY:
                p->offset = mt->offset + len;
                p->rmargin = p->maxrmargin;
@@ -629,7 +629,7 @@ pre_IP(DECL_ARGS)
                break;
        }
 
-       return(1);
+       return 1;
 }
 
 static void
@@ -661,7 +661,7 @@ pre_TP(DECL_ARGS)
 
        switch (n->type) {
        case ROFFT_HEAD:
-               p->flags |= TERMP_NOBREAK;
+               p->flags |= TERMP_NOBREAK | TERMP_BRTRSP;
                p->trailspace = 1;
                break;
        case ROFFT_BODY:
@@ -671,15 +671,15 @@ pre_TP(DECL_ARGS)
                print_bvspace(p, n, mt->pardist);
                /* FALLTHROUGH */
        default:
-               return(1);
+               return 1;
        }
 
        /* Calculate offset. */
 
        if ((nn = n->parent->head->child) != NULL &&
-           nn->string != NULL && ! (MAN_LINE & nn->flags) &&
+           nn->string != NULL && ! (NODE_LINE & nn->flags) &&
            a2roffsu(nn->string, &su, SCALE_EN)) {
-               len = term_hspan(p, &su);
+               len = term_hspan(p, &su) / 24;
                if (len < 0 && (size_t)(-len) > mt->offset)
                        len = -mt->offset;
                else if (len > SHRT_MAX)
@@ -698,7 +698,7 @@ pre_TP(DECL_ARGS)
 
                /* Don't print same-line elements. */
                nn = n->child;
-               while (NULL != nn && 0 == (MAN_LINE & nn->flags))
+               while (NULL != nn && 0 == (NODE_LINE & nn->flags))
                        nn = nn->next;
 
                while (NULL != nn) {
@@ -708,18 +708,18 @@ pre_TP(DECL_ARGS)
 
                if (savelit)
                        mt->fl |= MANT_LITERAL;
-               return(0);
+               return 0;
        case ROFFT_BODY:
                p->offset = mt->offset + len;
                p->rmargin = p->maxrmargin;
                p->trailspace = 0;
-               p->flags &= ~TERMP_NOBREAK;
+               p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP);
                break;
        default:
                break;
        }
 
-       return(1);
+       return 1;
 }
 
 static void
@@ -757,7 +757,7 @@ pre_SS(DECL_ARGS)
 
                do {
                        n = n->prev;
-               } while (n != NULL && n->tok != MAN_MAX &&
+               } while (n != NULL && n->tok != TOKEN_NONE &&
                    termacts[n->tok].flags & MAN_NOTEXT);
                if (n == NULL || (n->tok == MAN_SS && n->body->child == NULL))
                        break;
@@ -768,15 +768,21 @@ pre_SS(DECL_ARGS)
        case ROFFT_HEAD:
                term_fontrepl(p, TERMFONT_BOLD);
                p->offset = term_len(p, 3);
+               p->rmargin = mt->offset;
+               p->trailspace = mt->offset;
+               p->flags |= TERMP_NOBREAK | TERMP_BRIND;
                break;
        case ROFFT_BODY:
                p->offset = mt->offset;
+               p->rmargin = p->maxrmargin;
+               p->trailspace = 0;
+               p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
                break;
        default:
                break;
        }
 
-       return(1);
+       return 1;
 }
 
 static void
@@ -823,15 +829,21 @@ pre_SH(DECL_ARGS)
        case ROFFT_HEAD:
                term_fontrepl(p, TERMFONT_BOLD);
                p->offset = 0;
+               p->rmargin = mt->offset;
+               p->trailspace = mt->offset;
+               p->flags |= TERMP_NOBREAK | TERMP_BRIND;
                break;
        case ROFFT_BODY:
                p->offset = mt->offset;
+               p->rmargin = p->maxrmargin;
+               p->trailspace = 0;
+               p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
                break;
        default:
                break;
        }
 
-       return(1);
+       return 1;
 }
 
 static void
@@ -858,17 +870,19 @@ pre_RS(DECL_ARGS)
        switch (n->type) {
        case ROFFT_BLOCK:
                term_newln(p);
-               return(1);
+               return 1;
        case ROFFT_HEAD:
-               return(0);
+               return 0;
        default:
                break;
        }
 
        n = n->parent->head;
        n->aux = SHRT_MAX + 1;
-       if (n->child != NULL && a2roffsu(n->child->string, &su, SCALE_EN))
-               n->aux = term_hspan(p, &su);
+       if (n->child == NULL)
+               n->aux = mt->lmargin[mt->lmargincur];
+       else if (a2roffsu(n->child->string, &su, SCALE_EN))
+               n->aux = term_hspan(p, &su) / 24;
        if (n->aux < 0 && (size_t)(-n->aux) > mt->offset)
                n->aux = -mt->offset;
        else if (n->aux > SHRT_MAX)
@@ -881,8 +895,8 @@ pre_RS(DECL_ARGS)
        if (++mt->lmarginsz < MAXMARGINS)
                mt->lmargincur = mt->lmarginsz;
 
-       mt->lmargin[mt->lmargincur] = mt->lmargin[mt->lmargincur - 1];
-       return(1);
+       mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
+       return 1;
 }
 
 static void
@@ -910,7 +924,7 @@ static int
 pre_UR(DECL_ARGS)
 {
 
-       return (n->type != ROFFT_HEAD);
+       return n->type != ROFFT_HEAD;
 }
 
 static void
@@ -946,17 +960,17 @@ print_man_node(DECL_ARGS)
                if ('\0' == *n->string) {
                        term_vspace(p);
                        return;
-               } else if (' ' == *n->string && MAN_LINE & n->flags)
+               } else if (' ' == *n->string && NODE_LINE & n->flags)
                        term_newln(p);
 
                term_word(p, n->string);
                goto out;
 
        case ROFFT_EQN:
-               if ( ! (n->flags & MAN_LINE))
+               if ( ! (n->flags & NODE_LINE))
                        p->flags |= TERMP_NOSPACE;
                term_eqn(p, n->eqn);
-               if (n->next != NULL && ! (n->next->flags & MAN_LINE))
+               if (n->next != NULL && ! (n->next->flags & NODE_LINE))
                        p->flags |= TERMP_NOSPACE;
                return;
        case ROFFT_TBL:
@@ -993,7 +1007,7 @@ out:
         */
        if (mt->fl & MANT_LITERAL &&
            ! (p->flags & (TERMP_NOBREAK | TERMP_NONEWLINE)) &&
-           (n->next == NULL || n->next->flags & MAN_LINE)) {
+           (n->next == NULL || n->next->flags & NODE_LINE)) {
                rm = p->rmargin;
                rmax = p->maxrmargin;
                p->rmargin = p->maxrmargin = TERM_MAXMARGIN;
@@ -1009,7 +1023,7 @@ out:
                        p->rmargin = rm;
                p->maxrmargin = rmax;
        }
-       if (MAN_EOS & n->flags)
+       if (NODE_EOS & n->flags)
                p->flags |= TERMP_SENTENCE;
 }