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Annotation of mandoc/tbl_data.c, Revision 1.24

1.24    ! kristaps    1: /*     $Id: tbl_data.c,v 1.23 2011/03/15 16:23:51 kristaps 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"
                     29: #include "libmandoc.h"
                     30: #include "libroff.h"
                     31:
1.22      kristaps   32: static int              data(struct tbl_node *, struct tbl_span *,
                     33:                                int, const char *, int *);
                     34: static struct tbl_span *newspan(struct tbl_node *, int,
                     35:                                struct tbl_row *);
1.1       kristaps   36:
1.11      kristaps   37: static int
1.8       kristaps   38: data(struct tbl_node *tbl, struct tbl_span *dp,
1.1       kristaps   39:                int ln, const char *p, int *pos)
                     40: {
                     41:        struct tbl_dat  *dat;
1.3       kristaps   42:        struct tbl_cell *cp;
1.16      kristaps   43:        int              sv, spans;
1.1       kristaps   44:
1.3       kristaps   45:        cp = NULL;
                     46:        if (dp->last && dp->last->layout)
                     47:                cp = dp->last->layout->next;
                     48:        else if (NULL == dp->last)
                     49:                cp = dp->layout->first;
                     50:
1.12      kristaps   51:        /*
                     52:         * Skip over spanners and vertical lines to data formats, since
                     53:         * we want to match data with data layout cells in the header.
                     54:         */
1.3       kristaps   55:
                     56:        while (cp && (TBL_CELL_VERT == cp->pos ||
1.12      kristaps   57:                                TBL_CELL_DVERT == cp->pos ||
                     58:                                TBL_CELL_SPAN == cp->pos))
1.3       kristaps   59:                cp = cp->next;
                     60:
1.16      kristaps   61:        /*
                     62:         * Stop processing when we reach the end of the available layout
                     63:         * cells.  This means that we have extra input.
                     64:         */
                     65:
                     66:        if (NULL == cp) {
1.24    ! kristaps   67:                mandoc_msg(MANDOCERR_TBLEXTRADAT,
        !            68:                                tbl->parse, ln, *pos, NULL);
1.16      kristaps   69:                /* Skip to the end... */
                     70:                while (p[*pos])
                     71:                        (*pos)++;
                     72:                return(1);
                     73:        }
                     74:
1.1       kristaps   75:        dat = mandoc_calloc(1, sizeof(struct tbl_dat));
1.3       kristaps   76:        dat->layout = cp;
1.11      kristaps   77:        dat->pos = TBL_DATA_NONE;
1.7       kristaps   78:
1.16      kristaps   79:        assert(TBL_CELL_SPAN != cp->pos);
                     80:
                     81:        for (spans = 0, cp = cp->next; cp; cp = cp->next)
                     82:                if (TBL_CELL_SPAN == cp->pos)
                     83:                        spans++;
                     84:                else
                     85:                        break;
                     86:
                     87:        dat->spans = spans;
1.1       kristaps   88:
                     89:        if (dp->last) {
                     90:                dp->last->next = dat;
                     91:                dp->last = dat;
                     92:        } else
                     93:                dp->last = dp->first = dat;
                     94:
                     95:        sv = *pos;
1.8       kristaps   96:        while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1       kristaps   97:                (*pos)++;
                     98:
1.11      kristaps   99:        /*
                    100:         * Check for a continued-data scope opening.  This consists of a
                    101:         * trailing `T{' at the end of the line.  Subsequent lines,
                    102:         * until a standalone `T}', are included in our cell.
                    103:         */
                    104:
                    105:        if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
                    106:                tbl->part = TBL_PART_CDATA;
                    107:                return(0);
                    108:        }
                    109:
1.23      kristaps  110:        assert(*pos - sv >= 0);
                    111:
                    112:        dat->string = mandoc_malloc((size_t)(*pos - sv + 1));
                    113:        memcpy(dat->string, &p[sv], (size_t)(*pos - sv));
1.1       kristaps  114:        dat->string[*pos - sv] = '\0';
                    115:
                    116:        if (p[*pos])
                    117:                (*pos)++;
                    118:
                    119:        if ( ! strcmp(dat->string, "_"))
1.5       kristaps  120:                dat->pos = TBL_DATA_HORIZ;
1.1       kristaps  121:        else if ( ! strcmp(dat->string, "="))
1.5       kristaps  122:                dat->pos = TBL_DATA_DHORIZ;
1.1       kristaps  123:        else if ( ! strcmp(dat->string, "\\_"))
1.5       kristaps  124:                dat->pos = TBL_DATA_NHORIZ;
1.1       kristaps  125:        else if ( ! strcmp(dat->string, "\\="))
1.5       kristaps  126:                dat->pos = TBL_DATA_NDHORIZ;
                    127:        else
                    128:                dat->pos = TBL_DATA_DATA;
1.11      kristaps  129:
1.10      kristaps  130:        if (TBL_CELL_HORIZ == dat->layout->pos ||
1.19      kristaps  131:                        TBL_CELL_DHORIZ == dat->layout->pos ||
                    132:                        TBL_CELL_DOWN == dat->layout->pos)
1.10      kristaps  133:                if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
1.24    ! kristaps  134:                        mandoc_msg(MANDOCERR_TBLIGNDATA,
        !           135:                                        tbl->parse, ln, sv, NULL);
1.11      kristaps  136:
                    137:        return(1);
                    138: }
                    139:
1.13      kristaps  140: /* ARGSUSED */
1.11      kristaps  141: int
                    142: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
                    143: {
                    144:        struct tbl_dat  *dat;
                    145:        size_t           sz;
1.14      kristaps  146:        int              pos;
1.11      kristaps  147:
1.14      kristaps  148:        pos = 0;
1.11      kristaps  149:
                    150:        dat = tbl->last_span->last;
1.14      kristaps  151:
                    152:        if (p[pos] == 'T' && p[pos + 1] == '}') {
                    153:                pos += 2;
                    154:                if (p[pos] == tbl->opts.tab) {
                    155:                        tbl->part = TBL_PART_DATA;
                    156:                        pos++;
                    157:                        return(data(tbl, tbl->last_span, ln, p, &pos));
                    158:                } else if ('\0' == p[pos]) {
                    159:                        tbl->part = TBL_PART_DATA;
                    160:                        return(1);
                    161:                }
                    162:
                    163:                /* Fallthrough: T} is part of a word. */
                    164:        }
1.17      kristaps  165:
                    166:        dat->pos = TBL_DATA_DATA;
1.11      kristaps  167:
                    168:        if (dat->string) {
                    169:                sz = strlen(p) + strlen(dat->string) + 2;
                    170:                dat->string = mandoc_realloc(dat->string, sz);
                    171:                strlcat(dat->string, " ", sz);
                    172:                strlcat(dat->string, p, sz);
                    173:        } else
                    174:                dat->string = mandoc_strdup(p);
1.19      kristaps  175:
                    176:        if (TBL_CELL_DOWN == dat->layout->pos)
1.24    ! kristaps  177:                mandoc_msg(MANDOCERR_TBLIGNDATA,
        !           178:                                tbl->parse, ln, pos, NULL);
1.11      kristaps  179:
                    180:        return(0);
1.1       kristaps  181: }
                    182:
1.20      schwarze  183: static struct tbl_span *
1.22      kristaps  184: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20      schwarze  185: {
                    186:        struct tbl_span *dp;
                    187:
                    188:        dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.22      kristaps  189:        dp->line = line;
1.20      schwarze  190:        dp->tbl = &tbl->opts;
                    191:        dp->layout = rp;
                    192:        dp->head = tbl->first_head;
                    193:
                    194:        if (tbl->last_span) {
                    195:                tbl->last_span->next = dp;
                    196:                tbl->last_span = dp;
                    197:        } else {
                    198:                tbl->last_span = tbl->first_span = dp;
1.21      schwarze  199:                tbl->current_span = NULL;
1.20      schwarze  200:                dp->flags |= TBL_SPAN_FIRST;
                    201:        }
                    202:
                    203:        return(dp);
                    204: }
                    205:
1.2       kristaps  206: int
1.8       kristaps  207: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1       kristaps  208: {
                    209:        struct tbl_span *dp;
1.3       kristaps  210:        struct tbl_row  *rp;
1.1       kristaps  211:        int              pos;
                    212:
                    213:        pos = 0;
                    214:
                    215:        if ('\0' == p[pos]) {
1.24    ! kristaps  216:                mandoc_msg(MANDOCERR_TBL, tbl->parse, ln, pos, NULL);
1.4       kristaps  217:                return(0);
1.1       kristaps  218:        }
                    219:
1.3       kristaps  220:        /*
                    221:         * Choose a layout row: take the one following the last parsed
                    222:         * span's.  If that doesn't exist, use the last parsed span's.
1.15      kristaps  223:         * If there's no last parsed span, use the first row.  Lastly,
                    224:         * if the last span was a horizontal line, use the same layout
                    225:         * (it doesn't "consume" the layout).
1.3       kristaps  226:         */
                    227:
                    228:        if (tbl->last_span) {
                    229:                assert(tbl->last_span->layout);
1.20      schwarze  230:                if (tbl->last_span->pos == TBL_SPAN_DATA) {
                    231:                        for (rp = tbl->last_span->layout->next;
                    232:                                        rp && rp->first; rp = rp->next) {
                    233:                                switch (rp->first->pos) {
                    234:                                case (TBL_CELL_HORIZ):
1.22      kristaps  235:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  236:                                        dp->pos = TBL_SPAN_HORIZ;
                    237:                                        continue;
                    238:                                case (TBL_CELL_DHORIZ):
1.22      kristaps  239:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  240:                                        dp->pos = TBL_SPAN_DHORIZ;
                    241:                                        continue;
                    242:                                default:
                    243:                                        break;
                    244:                                }
                    245:                                break;
                    246:                        }
                    247:                } else
1.15      kristaps  248:                        rp = tbl->last_span->layout;
1.18      kristaps  249:
1.3       kristaps  250:                if (NULL == rp)
                    251:                        rp = tbl->last_span->layout;
                    252:        } else
                    253:                rp = tbl->first_row;
1.18      kristaps  254:
                    255:        assert(rp);
1.3       kristaps  256:
1.22      kristaps  257:        dp = newspan(tbl, ln, rp);
1.2       kristaps  258:
1.1       kristaps  259:        if ( ! strcmp(p, "_")) {
1.5       kristaps  260:                dp->pos = TBL_SPAN_HORIZ;
1.2       kristaps  261:                return(1);
1.1       kristaps  262:        } else if ( ! strcmp(p, "=")) {
1.5       kristaps  263:                dp->pos = TBL_SPAN_DHORIZ;
1.2       kristaps  264:                return(1);
1.1       kristaps  265:        }
1.5       kristaps  266:
                    267:        dp->pos = TBL_SPAN_DATA;
1.1       kristaps  268:
1.11      kristaps  269:        /* This returns 0 when TBL_PART_CDATA is entered. */
                    270:
1.1       kristaps  271:        while ('\0' != p[pos])
1.11      kristaps  272:                if ( ! data(tbl, dp, ln, p, &pos))
                    273:                        return(0);
1.1       kristaps  274:
1.2       kristaps  275:        return(1);
1.1       kristaps  276: }

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