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Annotation of mandoc/tbl_html.c, Revision 1.30

1.30    ! schwarze    1: /*     $Id: tbl_html.c,v 1.29 2018/11/26 21:06:02 schwarze Exp $ */
1.1       kristaps    2: /*
1.9       schwarze    3:  * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.25      schwarze    4:  * Copyright (c) 2014, 2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     15:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     16:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18: #include "config.h"
1.12      schwarze   19:
                     20: #include <sys/types.h>
1.1       kristaps   21:
                     22: #include <assert.h>
                     23: #include <stdio.h>
                     24: #include <stdlib.h>
                     25: #include <string.h>
                     26:
1.30    ! schwarze   27: #include "tbl.h"
1.1       kristaps   28: #include "out.h"
                     29: #include "html.h"
                     30:
1.7       kristaps   31: static void     html_tblopen(struct html *, const struct tbl_span *);
1.4       kristaps   32: static size_t   html_tbl_len(size_t, void *);
                     33: static size_t   html_tbl_strlen(const char *, void *);
1.21      schwarze   34: static size_t   html_tbl_sulen(const struct roffsu *, void *);
1.4       kristaps   35:
1.11      schwarze   36:
1.4       kristaps   37: static size_t
                     38: html_tbl_len(size_t sz, void *arg)
                     39: {
1.17      schwarze   40:        return sz;
1.4       kristaps   41: }
                     42:
                     43: static size_t
                     44: html_tbl_strlen(const char *p, void *arg)
                     45: {
1.21      schwarze   46:        return strlen(p);
                     47: }
1.4       kristaps   48:
1.21      schwarze   49: static size_t
                     50: html_tbl_sulen(const struct roffsu *su, void *arg)
                     51: {
1.23      schwarze   52:        if (su->scale < 0.0)
                     53:                return 0;
                     54:
1.21      schwarze   55:        switch (su->unit) {
                     56:        case SCALE_FS:  /* 2^16 basic units */
                     57:                return su->scale * 65536.0 / 24.0;
                     58:        case SCALE_IN:  /* 10 characters per inch */
                     59:                return su->scale * 10.0;
                     60:        case SCALE_CM:  /* 2.54 cm per inch */
                     61:                return su->scale * 10.0 / 2.54;
                     62:        case SCALE_PC:  /* 6 pica per inch */
                     63:        case SCALE_VS:
                     64:                return su->scale * 10.0 / 6.0;
                     65:        case SCALE_EN:
                     66:        case SCALE_EM:
                     67:                return su->scale;
                     68:        case SCALE_PT:  /* 12 points per pica */
                     69:                return su->scale * 10.0 / 6.0 / 12.0;
                     70:        case SCALE_BU:  /* 24 basic units per character */
                     71:                return su->scale / 24.0;
                     72:        case SCALE_MM:  /* 1/1000 inch */
                     73:                return su->scale / 100.0;
                     74:        default:
                     75:                abort();
                     76:        }
1.4       kristaps   77: }
                     78:
1.7       kristaps   79: static void
                     80: html_tblopen(struct html *h, const struct tbl_span *sp)
                     81: {
1.16      schwarze   82:        if (h->tbl.cols == NULL) {
1.7       kristaps   83:                h->tbl.len = html_tbl_len;
                     84:                h->tbl.slen = html_tbl_strlen;
1.21      schwarze   85:                h->tbl.sulen = html_tbl_sulen;
1.22      schwarze   86:                tblcalc(&h->tbl, sp, 0, 0);
1.7       kristaps   87:        }
                     88:        assert(NULL == h->tblt);
1.29      schwarze   89:        h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
                     90:            "border",
                     91:                sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
                     92:            "border-style",
                     93:                sp->opts->opts & TBL_OPT_DBOX ? "double" :
                     94:                sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
                     95:            "border-top-style",
                     96:                sp->pos == TBL_SPAN_DHORIZ ? "double" :
                     97:                sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
1.7       kristaps   98: }
                     99:
                    100: void
                    101: print_tblclose(struct html *h)
                    102: {
                    103:
                    104:        assert(h->tblt);
                    105:        print_tagq(h, h->tblt);
                    106:        h->tblt = NULL;
                    107: }
                    108:
1.1       kristaps  109: void
                    110: print_tbl(struct html *h, const struct tbl_span *sp)
                    111: {
1.26      schwarze  112:        const struct tbl_dat    *dp;
1.29      schwarze  113:        const struct tbl_cell   *cp;
                    114:        const struct tbl_span   *psp;
1.26      schwarze  115:        struct tag              *tt;
                    116:        const char              *hspans, *vspans, *halign, *valign;
1.29      schwarze  117:        const char              *bborder, *lborder, *rborder;
1.26      schwarze  118:        char                     hbuf[4], vbuf[4];
1.29      schwarze  119:        int                      i;
1.1       kristaps  120:
1.14      schwarze  121:        if (h->tblt == NULL)
1.7       kristaps  122:                html_tblopen(h, sp);
                    123:
1.29      schwarze  124:        /*
                    125:         * Horizontal lines spanning the whole table
                    126:         * are handled by previous or following table rows.
                    127:         */
                    128:
                    129:        if (sp->pos != TBL_SPAN_DATA)
                    130:                return;
                    131:
                    132:        /* Inhibit printing of spaces: we do padding ourselves. */
1.7       kristaps  133:
1.1       kristaps  134:        h->flags |= HTML_NONOSPACE;
                    135:        h->flags |= HTML_NOSPACE;
                    136:
1.29      schwarze  137:        /* Draw a vertical line left of this row? */
1.4       kristaps  138:
1.29      schwarze  139:        switch (sp->layout->vert) {
                    140:        case 2:
                    141:                lborder = "double";
                    142:                break;
                    143:        case 1:
                    144:                lborder = "solid";
1.5       kristaps  145:                break;
                    146:        default:
1.29      schwarze  147:                lborder = NULL;
                    148:                break;
                    149:        }
1.27      schwarze  150:
1.29      schwarze  151:        /* Draw a horizontal line below this row? */
                    152:
                    153:        bborder = NULL;
                    154:        if ((psp = sp->next) != NULL) {
                    155:                switch (psp->pos) {
                    156:                case TBL_SPAN_DHORIZ:
                    157:                        bborder = "double";
                    158:                        break;
                    159:                case TBL_SPAN_HORIZ:
                    160:                        bborder = "solid";
                    161:                        break;
                    162:                default:
                    163:                        break;
                    164:                }
                    165:        }
                    166:
                    167:        tt = print_otag(h, TAG_TR, "ss",
                    168:            "border-left-style", lborder,
                    169:            "border-bottom-style", bborder);
                    170:
                    171:        for (dp = sp->first; dp != NULL; dp = dp->next) {
                    172:                print_stagq(h, tt);
                    173:
                    174:                /*
                    175:                 * Do not generate <td> elements for continuations
                    176:                 * of spanned cells.  Larger <td> elements covering
                    177:                 * this space were already generated earlier.
                    178:                 */
                    179:
                    180:                cp = dp->layout;
                    181:                if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
                    182:                    (dp->string != NULL && strcmp(dp->string, "\\^") == 0))
                    183:                        continue;
                    184:
                    185:                /* Determine the attribute values. */
                    186:
                    187:                if (dp->hspans > 0) {
                    188:                        (void)snprintf(hbuf, sizeof(hbuf),
                    189:                            "%d", dp->hspans + 1);
                    190:                        hspans = hbuf;
                    191:                } else
                    192:                        hspans = NULL;
                    193:                if (dp->vspans > 0) {
                    194:                        (void)snprintf(vbuf, sizeof(vbuf),
                    195:                            "%d", dp->vspans + 1);
                    196:                        vspans = vbuf;
                    197:                } else
                    198:                        vspans = NULL;
                    199:
                    200:                switch (cp->pos) {
                    201:                case TBL_CELL_CENTRE:
                    202:                        halign = "center";
                    203:                        break;
                    204:                case TBL_CELL_RIGHT:
                    205:                case TBL_CELL_NUMBER:
                    206:                        halign = "right";
                    207:                        break;
                    208:                default:
                    209:                        halign = NULL;
                    210:                        break;
1.1       kristaps  211:                }
1.29      schwarze  212:                if (cp->flags & TBL_CELL_TALIGN)
                    213:                        valign = "top";
                    214:                else if (cp->flags & TBL_CELL_BALIGN)
                    215:                        valign = "bottom";
                    216:                else
                    217:                        valign = NULL;
                    218:
                    219:                for (i = dp->hspans; i > 0; i--)
                    220:                        cp = cp->next;
                    221:                switch (cp->vert) {
                    222:                case 2:
                    223:                        rborder = "double";
                    224:                        break;
                    225:                case 1:
                    226:                        rborder = "solid";
                    227:                        break;
                    228:                default:
                    229:                        rborder = NULL;
                    230:                        break;
                    231:                }
                    232:
                    233:                /* Print the element and the attributes. */
                    234:
                    235:                print_otag(h, TAG_TD, "??sss",
                    236:                    "colspan", hspans, "rowspan", vspans,
                    237:                    "vertical-align", valign,
                    238:                    "text-align", halign,
                    239:                    "border-right-style", rborder);
                    240:                if (dp->string != NULL)
                    241:                        print_text(h, dp->string);
1.5       kristaps  242:        }
1.4       kristaps  243:
1.7       kristaps  244:        print_tagq(h, tt);
                    245:
1.1       kristaps  246:        h->flags &= ~HTML_NONOSPACE;
1.4       kristaps  247:
1.16      schwarze  248:        if (sp->next == NULL) {
1.4       kristaps  249:                assert(h->tbl.cols);
                    250:                free(h->tbl.cols);
                    251:                h->tbl.cols = NULL;
1.7       kristaps  252:                print_tblclose(h);
1.4       kristaps  253:        }
1.1       kristaps  254: }

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