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Annotation of mandoc/tbl.c, Revision 1.16

1.16    ! kristaps    1: /*     $Id: tbl.c,v 1.15 2011/01/01 22:19:15 kristaps Exp $ */
1.1       kristaps    2: /*
1.4       kristaps    3:  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1       kristaps    4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: #include <assert.h>
1.3       kristaps   18: #include <stdio.h>
1.1       kristaps   19: #include <stdlib.h>
                     20: #include <string.h>
                     21: #include <time.h>
                     22:
                     23: #include "mandoc.h"
                     24: #include "roff.h"
                     25: #include "libmandoc.h"
                     26: #include "libroff.h"
                     27:
1.16    ! kristaps   28: static void     tbl_calc(struct tbl *);
        !            29: static void     tbl_calc_data(struct tbl *, struct tbl_dat *);
        !            30: static void     tbl_calc_data_literal(struct tbl_dat *);
        !            31: static void     tbl_calc_data_number(struct tbl *, struct tbl_dat *);
        !            32: static void     tbl_calc_data_spanner(struct tbl_dat *);
        !            33:
1.1       kristaps   34: enum rofferr
                     35: tbl_read(struct tbl *tbl, int ln, const char *p, int offs)
                     36: {
                     37:        int              len;
                     38:        const char      *cp;
                     39:
                     40:        cp = &p[offs];
                     41:        len = (int)strlen(cp);
                     42:
1.5       kristaps   43:        /*
                     44:         * If we're in the options section and we don't have a
                     45:         * terminating semicolon, assume we've moved directly into the
                     46:         * layout section.  No need to report a warning: this is,
                     47:         * apparently, standard behaviour.
                     48:         */
                     49:
                     50:        if (TBL_PART_OPTS == tbl->part && len)
1.1       kristaps   51:                if (';' != cp[len - 1])
                     52:                        tbl->part = TBL_PART_LAYOUT;
1.5       kristaps   53:
                     54:        /* Now process each logical section of the table.  */
                     55:
                     56:        switch (tbl->part) {
                     57:        case (TBL_PART_OPTS):
                     58:                return(tbl_option(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
1.6       kristaps   59:        case (TBL_PART_LAYOUT):
                     60:                return(tbl_layout(tbl, ln, p) ? ROFF_IGN : ROFF_ERR);
1.8       kristaps   61:        case (TBL_PART_DATA):
1.5       kristaps   62:                break;
1.8       kristaps   63:        }
                     64:
1.12      kristaps   65:        /*
                     66:         * This only returns zero if the line is empty, so we ignore it
                     67:         * and continue on.
1.9       kristaps   68:         */
1.12      kristaps   69:        return(tbl_data(tbl, ln, p) ? ROFF_TBL : ROFF_IGN);
1.1       kristaps   70: }
                     71:
                     72: struct tbl *
1.13      kristaps   73: tbl_alloc(int pos, int line, void *data, const mandocmsg msg)
1.1       kristaps   74: {
                     75:        struct tbl      *p;
                     76:
1.6       kristaps   77:        p = mandoc_calloc(1, sizeof(struct tbl));
1.13      kristaps   78:        p->line = line;
                     79:        p->pos = pos;
1.5       kristaps   80:        p->data = data;
                     81:        p->msg = msg;
1.10      kristaps   82:        p->part = TBL_PART_OPTS;
                     83:        p->tab = '\t';
                     84:        p->linesize = 12;
                     85:        p->decimal = '.';
1.1       kristaps   86:        return(p);
                     87: }
                     88:
                     89: void
                     90: tbl_free(struct tbl *p)
                     91: {
1.10      kristaps   92:        struct tbl_row  *rp;
                     93:        struct tbl_cell *cp;
                     94:        struct tbl_span *sp;
                     95:        struct tbl_dat  *dp;
1.15      kristaps   96:        struct tbl_head *hp;
1.1       kristaps   97:
1.15      kristaps   98:        while (NULL != (rp = p->first_row)) {
1.10      kristaps   99:                p->first_row = rp->next;
                    100:                while (rp->first) {
                    101:                        cp = rp->first;
                    102:                        rp->first = cp->next;
                    103:                        free(cp);
                    104:                }
                    105:                free(rp);
                    106:        }
1.1       kristaps  107:
1.15      kristaps  108:        while (NULL != (sp = p->first_span)) {
1.10      kristaps  109:                p->first_span = sp->next;
                    110:                while (sp->first) {
                    111:                        dp = sp->first;
                    112:                        sp->first = dp->next;
                    113:                        if (dp->string)
                    114:                                free(dp->string);
                    115:                        free(dp);
                    116:                }
                    117:                free(sp);
1.15      kristaps  118:        }
                    119:
                    120:        while (NULL != (hp = p->first_head)) {
                    121:                p->first_head = hp->next;
                    122:                free(hp);
1.10      kristaps  123:        }
1.1       kristaps  124:
1.10      kristaps  125:        free(p);
1.7       kristaps  126: }
                    127:
                    128: void
1.14      kristaps  129: tbl_restart(int line, int pos, struct tbl *tbl)
1.7       kristaps  130: {
                    131:
                    132:        tbl->part = TBL_PART_LAYOUT;
1.14      kristaps  133:        tbl->line = line;
                    134:        tbl->pos = pos;
                    135:
                    136:        if (NULL == tbl->first_span || NULL == tbl->first_span->first)
                    137:                TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
1.1       kristaps  138: }
1.3       kristaps  139:
1.11      kristaps  140: const struct tbl_span *
                    141: tbl_span(const struct tbl *tbl)
                    142: {
                    143:
                    144:        assert(tbl);
                    145:        return(tbl->last_span);
1.13      kristaps  146: }
                    147:
                    148: void
                    149: tbl_end(struct tbl *tbl)
                    150: {
                    151:
                    152:        if (NULL == tbl->first_span || NULL == tbl->first_span->first)
                    153:                TBL_MSG(tbl, MANDOCERR_TBLNODATA, tbl->line, tbl->pos);
1.16    ! kristaps  154:        else
        !           155:                tbl_calc(tbl);
        !           156: }
        !           157:
        !           158: static void
        !           159: tbl_calc(struct tbl *tbl)
        !           160: {
        !           161:        struct tbl_span *sp;
        !           162:        struct tbl_dat  *dp;
        !           163:        struct tbl_head *hp;
        !           164:
        !           165:        /* Calculate width as the max of column cells' widths. */
        !           166:
        !           167:        for (sp = tbl->first_span; sp; sp = sp->next) {
        !           168:                switch (sp->pos) {
        !           169:                case (TBL_DATA_HORIZ):
        !           170:                        /* FALLTHROUGH */
        !           171:                case (TBL_DATA_DHORIZ):
        !           172:                        continue;
        !           173:                default:
        !           174:                        break;
        !           175:                }
        !           176:                for (dp = sp->first; dp; dp = dp->next)
        !           177:                        tbl_calc_data(tbl, dp);
        !           178:        }
        !           179:
        !           180:        /* Calculate width as the simple spanner value. */
        !           181:
        !           182:        for (hp = tbl->first_head; hp; hp = hp->next)
        !           183:                switch (hp->pos) {
        !           184:                case (TBL_HEAD_VERT):
        !           185:                        hp->width = 1;
        !           186:                        break;
        !           187:                case (TBL_HEAD_DVERT):
        !           188:                        hp->width = 2;
        !           189:                        break;
        !           190:                default:
        !           191:                        break;
        !           192:                }
        !           193: }
        !           194:
        !           195: static void
        !           196: tbl_calc_data(struct tbl *tbl, struct tbl_dat *data)
        !           197: {
        !           198:
        !           199:        /*
        !           200:         * This is the case with overrunning cells...
        !           201:         */
        !           202:        if (NULL == data->layout)
        !           203:                return;
        !           204:
        !           205:        /* Branch down into data sub-types. */
        !           206:
        !           207:        switch (data->layout->pos) {
        !           208:        case (TBL_CELL_HORIZ):
        !           209:                /* FALLTHROUGH */
        !           210:        case (TBL_CELL_DHORIZ):
        !           211:                tbl_calc_data_spanner(data);
        !           212:                break;
        !           213:        case (TBL_CELL_LONG):
        !           214:                /* FALLTHROUGH */
        !           215:        case (TBL_CELL_CENTRE):
        !           216:                /* FALLTHROUGH */
        !           217:        case (TBL_CELL_LEFT):
        !           218:                /* FALLTHROUGH */
        !           219:        case (TBL_CELL_RIGHT):
        !           220:                tbl_calc_data_literal(data);
        !           221:                break;
        !           222:        case (TBL_CELL_NUMBER):
        !           223:                tbl_calc_data_number(tbl, data);
        !           224:                break;
        !           225:        default:
        !           226:                abort();
        !           227:                /* NOTREACHED */
        !           228:        }
        !           229: }
        !           230:
        !           231: static void
        !           232: tbl_calc_data_spanner(struct tbl_dat *data)
        !           233: {
        !           234:
        !           235:        /* N.B., these are horiz spanners (not vert) so always 1. */
        !           236:        data->layout->head->width = 1;
        !           237: }
        !           238:
        !           239: static void
        !           240: tbl_calc_data_number(struct tbl *tbl, struct tbl_dat *data)
        !           241: {
        !           242:        int              sz, d;
        !           243:        char            *dp, pnt;
        !           244:
        !           245:        /*
        !           246:         * First calculate number width and decimal place (last + 1 for
        !           247:         * no-decimal numbers).  If the stored decimal is subsequent
        !           248:         * ours, make our size longer by that difference
        !           249:         * (right-"shifting"); similarly, if ours is subsequent the
        !           250:         * stored, then extend the stored size by the difference.
        !           251:         * Finally, re-assign the stored values.
        !           252:         */
        !           253:
        !           254:        /* TODO: use spacing modifier. */
        !           255:
        !           256:        assert(data->string);
        !           257:        sz = (int)strlen(data->string);
        !           258:        pnt = tbl->decimal;
        !           259:
        !           260:        if (NULL == (dp = strchr(data->string, pnt)))
        !           261:                d = sz + 1;
        !           262:        else
        !           263:                d = (int)(dp - data->string) + 1;
        !           264:
        !           265:        sz += 2;
        !           266:
        !           267:        if (data->layout->head->decimal > d) {
        !           268:                sz += data->layout->head->decimal - d;
        !           269:                d = data->layout->head->decimal;
        !           270:        } else
        !           271:                data->layout->head->width +=
        !           272:                        d - data->layout->head->decimal;
        !           273:
        !           274:        if (sz > data->layout->head->width)
        !           275:                data->layout->head->width = sz;
        !           276:        if (d > data->layout->head->decimal)
        !           277:                data->layout->head->decimal = d;
1.11      kristaps  278: }
1.16    ! kristaps  279:
        !           280: static void
        !           281: tbl_calc_data_literal(struct tbl_dat *data)
        !           282: {
        !           283:        int              sz, bufsz;
        !           284:
        !           285:        /*
        !           286:         * Calculate our width and use the spacing, with a minimum
        !           287:         * spacing dictated by position (centre, e.g,. gets a space on
        !           288:         * either side, while right/left get a single adjacent space).
        !           289:         */
        !           290:
        !           291:        assert(data->string);
        !           292:        sz = (int)strlen(data->string);
        !           293:
        !           294:        switch (data->layout->pos) {
        !           295:        case (TBL_CELL_LONG):
        !           296:                /* FALLTHROUGH */
        !           297:        case (TBL_CELL_CENTRE):
        !           298:                bufsz = 2;
        !           299:                break;
        !           300:        default:
        !           301:                bufsz = 1;
        !           302:                break;
        !           303:        }
        !           304:
        !           305:        if (data->layout->spacing)
        !           306:                bufsz = bufsz > data->layout->spacing ?
        !           307:                        bufsz : data->layout->spacing;
        !           308:
        !           309:        sz += bufsz;
        !           310:        if (data->layout->head->width < sz)
        !           311:                data->layout->head->width = sz;
        !           312: }
        !           313:
1.14      kristaps  314:

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