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Annotation of mandoc/tbl_data.c, Revision 1.29

1.29    ! schwarze    1: /*     $Id: tbl_data.c,v 1.28 2014/01/05 18:37:53 joerg Exp $ */
1.1       kristaps    2: /*
1.20      schwarze    3:  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
                      4:  * Copyright (c) 2011 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:  */
1.11      kristaps   18: #ifdef HAVE_CONFIG_H
                     19: #include "config.h"
                     20: #endif
                     21:
1.1       kristaps   22: #include <assert.h>
                     23: #include <ctype.h>
                     24: #include <stdlib.h>
                     25: #include <string.h>
1.6       kristaps   26: #include <time.h>
1.1       kristaps   27:
                     28: #include "mandoc.h"
1.29    ! schwarze   29: #include "mandoc_aux.h"
1.1       kristaps   30: #include "libmandoc.h"
                     31: #include "libroff.h"
                     32:
1.28      joerg      33: static int              getdata(struct tbl_node *, struct tbl_span *,
1.22      kristaps   34:                                int, const char *, int *);
                     35: static struct tbl_span *newspan(struct tbl_node *, int,
                     36:                                struct tbl_row *);
1.1       kristaps   37:
1.11      kristaps   38: static int
1.28      joerg      39: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.1       kristaps   40:                int ln, const char *p, int *pos)
                     41: {
                     42:        struct tbl_dat  *dat;
1.3       kristaps   43:        struct tbl_cell *cp;
1.16      kristaps   44:        int              sv, spans;
1.1       kristaps   45:
1.3       kristaps   46:        cp = NULL;
                     47:        if (dp->last && dp->last->layout)
                     48:                cp = dp->last->layout->next;
                     49:        else if (NULL == dp->last)
                     50:                cp = dp->layout->first;
                     51:
1.12      kristaps   52:        /*
1.25      schwarze   53:         * Skip over spanners, since
1.12      kristaps   54:         * we want to match data with data layout cells in the header.
                     55:         */
1.3       kristaps   56:
1.25      schwarze   57:        while (cp && TBL_CELL_SPAN == cp->pos)
1.3       kristaps   58:                cp = cp->next;
                     59:
1.16      kristaps   60:        /*
                     61:         * Stop processing when we reach the end of the available layout
                     62:         * cells.  This means that we have extra input.
                     63:         */
                     64:
                     65:        if (NULL == cp) {
1.24      kristaps   66:                mandoc_msg(MANDOCERR_TBLEXTRADAT,
                     67:                                tbl->parse, ln, *pos, NULL);
1.16      kristaps   68:                /* Skip to the end... */
                     69:                while (p[*pos])
                     70:                        (*pos)++;
                     71:                return(1);
                     72:        }
                     73:
1.1       kristaps   74:        dat = mandoc_calloc(1, sizeof(struct tbl_dat));
1.3       kristaps   75:        dat->layout = cp;
1.11      kristaps   76:        dat->pos = TBL_DATA_NONE;
1.7       kristaps   77:
1.16      kristaps   78:        assert(TBL_CELL_SPAN != cp->pos);
                     79:
                     80:        for (spans = 0, cp = cp->next; cp; cp = cp->next)
                     81:                if (TBL_CELL_SPAN == cp->pos)
                     82:                        spans++;
                     83:                else
                     84:                        break;
                     85:
                     86:        dat->spans = spans;
1.1       kristaps   87:
                     88:        if (dp->last) {
                     89:                dp->last->next = dat;
                     90:                dp->last = dat;
                     91:        } else
                     92:                dp->last = dp->first = dat;
                     93:
                     94:        sv = *pos;
1.8       kristaps   95:        while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1       kristaps   96:                (*pos)++;
                     97:
1.11      kristaps   98:        /*
                     99:         * Check for a continued-data scope opening.  This consists of a
                    100:         * trailing `T{' at the end of the line.  Subsequent lines,
                    101:         * until a standalone `T}', are included in our cell.
                    102:         */
                    103:
                    104:        if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
                    105:                tbl->part = TBL_PART_CDATA;
1.27      schwarze  106:                return(1);
1.11      kristaps  107:        }
                    108:
1.23      kristaps  109:        assert(*pos - sv >= 0);
                    110:
                    111:        dat->string = mandoc_malloc((size_t)(*pos - sv + 1));
                    112:        memcpy(dat->string, &p[sv], (size_t)(*pos - sv));
1.1       kristaps  113:        dat->string[*pos - sv] = '\0';
                    114:
                    115:        if (p[*pos])
                    116:                (*pos)++;
                    117:
                    118:        if ( ! strcmp(dat->string, "_"))
1.5       kristaps  119:                dat->pos = TBL_DATA_HORIZ;
1.1       kristaps  120:        else if ( ! strcmp(dat->string, "="))
1.5       kristaps  121:                dat->pos = TBL_DATA_DHORIZ;
1.1       kristaps  122:        else if ( ! strcmp(dat->string, "\\_"))
1.5       kristaps  123:                dat->pos = TBL_DATA_NHORIZ;
1.1       kristaps  124:        else if ( ! strcmp(dat->string, "\\="))
1.5       kristaps  125:                dat->pos = TBL_DATA_NDHORIZ;
                    126:        else
                    127:                dat->pos = TBL_DATA_DATA;
1.11      kristaps  128:
1.10      kristaps  129:        if (TBL_CELL_HORIZ == dat->layout->pos ||
1.19      kristaps  130:                        TBL_CELL_DHORIZ == dat->layout->pos ||
                    131:                        TBL_CELL_DOWN == dat->layout->pos)
1.10      kristaps  132:                if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
1.24      kristaps  133:                        mandoc_msg(MANDOCERR_TBLIGNDATA,
                    134:                                        tbl->parse, ln, sv, NULL);
1.11      kristaps  135:
                    136:        return(1);
                    137: }
                    138:
1.13      kristaps  139: /* ARGSUSED */
1.11      kristaps  140: int
                    141: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
                    142: {
                    143:        struct tbl_dat  *dat;
                    144:        size_t           sz;
1.14      kristaps  145:        int              pos;
1.11      kristaps  146:
1.14      kristaps  147:        pos = 0;
1.11      kristaps  148:
                    149:        dat = tbl->last_span->last;
1.14      kristaps  150:
                    151:        if (p[pos] == 'T' && p[pos + 1] == '}') {
                    152:                pos += 2;
                    153:                if (p[pos] == tbl->opts.tab) {
                    154:                        tbl->part = TBL_PART_DATA;
                    155:                        pos++;
1.28      joerg     156:                        return(getdata(tbl, tbl->last_span, ln, p, &pos));
1.14      kristaps  157:                } else if ('\0' == p[pos]) {
                    158:                        tbl->part = TBL_PART_DATA;
                    159:                        return(1);
                    160:                }
                    161:
                    162:                /* Fallthrough: T} is part of a word. */
                    163:        }
1.17      kristaps  164:
                    165:        dat->pos = TBL_DATA_DATA;
1.11      kristaps  166:
                    167:        if (dat->string) {
                    168:                sz = strlen(p) + strlen(dat->string) + 2;
                    169:                dat->string = mandoc_realloc(dat->string, sz);
                    170:                strlcat(dat->string, " ", sz);
                    171:                strlcat(dat->string, p, sz);
                    172:        } else
                    173:                dat->string = mandoc_strdup(p);
1.19      kristaps  174:
                    175:        if (TBL_CELL_DOWN == dat->layout->pos)
1.24      kristaps  176:                mandoc_msg(MANDOCERR_TBLIGNDATA,
                    177:                                tbl->parse, ln, pos, NULL);
1.11      kristaps  178:
                    179:        return(0);
1.1       kristaps  180: }
                    181:
1.20      schwarze  182: static struct tbl_span *
1.22      kristaps  183: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20      schwarze  184: {
                    185:        struct tbl_span *dp;
                    186:
                    187:        dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.22      kristaps  188:        dp->line = line;
1.26      schwarze  189:        dp->opts = &tbl->opts;
1.20      schwarze  190:        dp->layout = rp;
                    191:        dp->head = tbl->first_head;
                    192:
                    193:        if (tbl->last_span) {
                    194:                tbl->last_span->next = dp;
                    195:                tbl->last_span = dp;
                    196:        } else {
                    197:                tbl->last_span = tbl->first_span = dp;
1.21      schwarze  198:                tbl->current_span = NULL;
1.20      schwarze  199:                dp->flags |= TBL_SPAN_FIRST;
                    200:        }
                    201:
                    202:        return(dp);
                    203: }
                    204:
1.2       kristaps  205: int
1.8       kristaps  206: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1       kristaps  207: {
                    208:        struct tbl_span *dp;
1.3       kristaps  209:        struct tbl_row  *rp;
1.1       kristaps  210:        int              pos;
                    211:
                    212:        pos = 0;
                    213:
                    214:        if ('\0' == p[pos]) {
1.24      kristaps  215:                mandoc_msg(MANDOCERR_TBL, tbl->parse, ln, pos, NULL);
1.4       kristaps  216:                return(0);
1.1       kristaps  217:        }
                    218:
1.3       kristaps  219:        /*
                    220:         * Choose a layout row: take the one following the last parsed
                    221:         * span's.  If that doesn't exist, use the last parsed span's.
1.15      kristaps  222:         * If there's no last parsed span, use the first row.  Lastly,
                    223:         * if the last span was a horizontal line, use the same layout
                    224:         * (it doesn't "consume" the layout).
1.3       kristaps  225:         */
                    226:
                    227:        if (tbl->last_span) {
                    228:                assert(tbl->last_span->layout);
1.20      schwarze  229:                if (tbl->last_span->pos == TBL_SPAN_DATA) {
                    230:                        for (rp = tbl->last_span->layout->next;
                    231:                                        rp && rp->first; rp = rp->next) {
                    232:                                switch (rp->first->pos) {
                    233:                                case (TBL_CELL_HORIZ):
1.22      kristaps  234:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  235:                                        dp->pos = TBL_SPAN_HORIZ;
                    236:                                        continue;
                    237:                                case (TBL_CELL_DHORIZ):
1.22      kristaps  238:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  239:                                        dp->pos = TBL_SPAN_DHORIZ;
                    240:                                        continue;
                    241:                                default:
                    242:                                        break;
                    243:                                }
                    244:                                break;
                    245:                        }
                    246:                } else
1.15      kristaps  247:                        rp = tbl->last_span->layout;
1.18      kristaps  248:
1.3       kristaps  249:                if (NULL == rp)
                    250:                        rp = tbl->last_span->layout;
                    251:        } else
                    252:                rp = tbl->first_row;
1.18      kristaps  253:
                    254:        assert(rp);
1.3       kristaps  255:
1.22      kristaps  256:        dp = newspan(tbl, ln, rp);
1.2       kristaps  257:
1.1       kristaps  258:        if ( ! strcmp(p, "_")) {
1.5       kristaps  259:                dp->pos = TBL_SPAN_HORIZ;
1.2       kristaps  260:                return(1);
1.1       kristaps  261:        } else if ( ! strcmp(p, "=")) {
1.5       kristaps  262:                dp->pos = TBL_SPAN_DHORIZ;
1.2       kristaps  263:                return(1);
1.1       kristaps  264:        }
1.5       kristaps  265:
                    266:        dp->pos = TBL_SPAN_DATA;
1.1       kristaps  267:
1.11      kristaps  268:        /* This returns 0 when TBL_PART_CDATA is entered. */
                    269:
1.1       kristaps  270:        while ('\0' != p[pos])
1.28      joerg     271:                if ( ! getdata(tbl, dp, ln, p, &pos))
1.11      kristaps  272:                        return(0);
1.1       kristaps  273:
1.2       kristaps  274:        return(1);
1.1       kristaps  275: }

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