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Annotation of mandoc/tbl_data.c, Revision 1.42

1.42    ! schwarze    1: /*     $Id: tbl_data.c,v 1.41 2015/10/06 18:32:20 schwarze Exp $ */
1.1       kristaps    2: /*
1.20      schwarze    3:  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.42    ! schwarze    4:  * Copyright (c) 2011, 2015, 2017 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: #include "config.h"
1.32      schwarze   19:
                     20: #include <sys/types.h>
1.11      kristaps   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:
1.33      schwarze   33: static void             getdata(struct tbl_node *, struct tbl_span *,
1.22      kristaps   34:                                int, const char *, int *);
1.30      schwarze   35: static struct tbl_span *newspan(struct tbl_node *, int,
1.22      kristaps   36:                                struct tbl_row *);
1.1       kristaps   37:
1.30      schwarze   38:
1.33      schwarze   39: static void
1.30      schwarze   40: getdata(struct tbl_node *tbl, struct tbl_span *dp,
1.1       kristaps   41:                int ln, const char *p, int *pos)
                     42: {
                     43:        struct tbl_dat  *dat;
1.3       kristaps   44:        struct tbl_cell *cp;
1.37      schwarze   45:        int              sv;
1.1       kristaps   46:
1.38      schwarze   47:        /* Advance to the next layout cell, skipping spanners. */
                     48:
1.37      schwarze   49:        cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
                     50:        while (cp != NULL && cp->pos == TBL_CELL_SPAN)
1.3       kristaps   51:                cp = cp->next;
                     52:
1.16      kristaps   53:        /*
                     54:         * Stop processing when we reach the end of the available layout
                     55:         * cells.  This means that we have extra input.
                     56:         */
                     57:
1.37      schwarze   58:        if (cp == NULL) {
1.36      schwarze   59:                mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
                     60:                    ln, *pos, p + *pos);
1.16      kristaps   61:                /* Skip to the end... */
                     62:                while (p[*pos])
                     63:                        (*pos)++;
1.33      schwarze   64:                return;
1.16      kristaps   65:        }
                     66:
1.37      schwarze   67:        dat = mandoc_calloc(1, sizeof(*dat));
1.3       kristaps   68:        dat->layout = cp;
1.11      kristaps   69:        dat->pos = TBL_DATA_NONE;
1.37      schwarze   70:        dat->spans = 0;
                     71:        for (cp = cp->next; cp != NULL; cp = cp->next)
                     72:                if (cp->pos == TBL_CELL_SPAN)
                     73:                        dat->spans++;
1.16      kristaps   74:                else
                     75:                        break;
1.30      schwarze   76:
1.37      schwarze   77:        if (dp->last == NULL)
                     78:                dp->first = dat;
                     79:        else
1.1       kristaps   80:                dp->last->next = dat;
1.37      schwarze   81:        dp->last = dat;
1.1       kristaps   82:
                     83:        sv = *pos;
1.8       kristaps   84:        while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1       kristaps   85:                (*pos)++;
                     86:
1.11      kristaps   87:        /*
                     88:         * Check for a continued-data scope opening.  This consists of a
                     89:         * trailing `T{' at the end of the line.  Subsequent lines,
                     90:         * until a standalone `T}', are included in our cell.
                     91:         */
                     92:
1.37      schwarze   93:        if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
1.11      kristaps   94:                tbl->part = TBL_PART_CDATA;
1.33      schwarze   95:                return;
1.11      kristaps   96:        }
                     97:
1.37      schwarze   98:        dat->string = mandoc_strndup(p + sv, *pos - sv);
1.1       kristaps   99:
                    100:        if (p[*pos])
                    101:                (*pos)++;
                    102:
                    103:        if ( ! strcmp(dat->string, "_"))
1.5       kristaps  104:                dat->pos = TBL_DATA_HORIZ;
1.1       kristaps  105:        else if ( ! strcmp(dat->string, "="))
1.5       kristaps  106:                dat->pos = TBL_DATA_DHORIZ;
1.1       kristaps  107:        else if ( ! strcmp(dat->string, "\\_"))
1.5       kristaps  108:                dat->pos = TBL_DATA_NHORIZ;
1.1       kristaps  109:        else if ( ! strcmp(dat->string, "\\="))
1.5       kristaps  110:                dat->pos = TBL_DATA_NDHORIZ;
                    111:        else
                    112:                dat->pos = TBL_DATA_DATA;
1.11      kristaps  113:
1.37      schwarze  114:        if ((dat->layout->pos == TBL_CELL_HORIZ ||
                    115:            dat->layout->pos == TBL_CELL_DHORIZ ||
                    116:            dat->layout->pos == TBL_CELL_DOWN) &&
                    117:            dat->pos == TBL_DATA_DATA && *dat->string != '\0')
                    118:                mandoc_msg(MANDOCERR_TBLDATA_SPAN,
                    119:                    tbl->parse, ln, sv, dat->string);
1.11      kristaps  120: }
                    121:
                    122: int
1.35      schwarze  123: tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
1.11      kristaps  124: {
                    125:        struct tbl_dat  *dat;
1.30      schwarze  126:        size_t           sz;
1.11      kristaps  127:
                    128:        dat = tbl->last_span->last;
1.14      kristaps  129:
                    130:        if (p[pos] == 'T' && p[pos + 1] == '}') {
                    131:                pos += 2;
                    132:                if (p[pos] == tbl->opts.tab) {
                    133:                        tbl->part = TBL_PART_DATA;
                    134:                        pos++;
1.40      schwarze  135:                        while (p[pos] != '\0')
                    136:                                getdata(tbl, tbl->last_span, ln, p, &pos);
1.41      schwarze  137:                        return 1;
1.37      schwarze  138:                } else if (p[pos] == '\0') {
1.14      kristaps  139:                        tbl->part = TBL_PART_DATA;
1.41      schwarze  140:                        return 1;
1.14      kristaps  141:                }
                    142:
                    143:                /* Fallthrough: T} is part of a word. */
                    144:        }
1.17      kristaps  145:
                    146:        dat->pos = TBL_DATA_DATA;
1.42    ! schwarze  147:        dat->block = 1;
1.11      kristaps  148:
1.37      schwarze  149:        if (dat->string != NULL) {
1.36      schwarze  150:                sz = strlen(p + pos) + strlen(dat->string) + 2;
1.11      kristaps  151:                dat->string = mandoc_realloc(dat->string, sz);
1.31      schwarze  152:                (void)strlcat(dat->string, " ", sz);
1.36      schwarze  153:                (void)strlcat(dat->string, p + pos, sz);
1.11      kristaps  154:        } else
1.36      schwarze  155:                dat->string = mandoc_strdup(p + pos);
1.19      kristaps  156:
1.37      schwarze  157:        if (dat->layout->pos == TBL_CELL_DOWN)
1.36      schwarze  158:                mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
                    159:                    ln, pos, dat->string);
1.11      kristaps  160:
1.41      schwarze  161:        return 0;
1.1       kristaps  162: }
                    163:
1.20      schwarze  164: static struct tbl_span *
1.22      kristaps  165: newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
1.20      schwarze  166: {
                    167:        struct tbl_span *dp;
                    168:
1.37      schwarze  169:        dp = mandoc_calloc(1, sizeof(*dp));
1.22      kristaps  170:        dp->line = line;
1.26      schwarze  171:        dp->opts = &tbl->opts;
1.20      schwarze  172:        dp->layout = rp;
1.34      schwarze  173:        dp->prev = tbl->last_span;
1.20      schwarze  174:
1.34      schwarze  175:        if (dp->prev == NULL) {
                    176:                tbl->first_span = dp;
1.21      schwarze  177:                tbl->current_span = NULL;
1.34      schwarze  178:        } else
                    179:                dp->prev->next = dp;
                    180:        tbl->last_span = dp;
1.20      schwarze  181:
1.41      schwarze  182:        return dp;
1.20      schwarze  183: }
                    184:
1.33      schwarze  185: void
1.35      schwarze  186: tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
1.1       kristaps  187: {
                    188:        struct tbl_span *dp;
1.3       kristaps  189:        struct tbl_row  *rp;
1.1       kristaps  190:
1.30      schwarze  191:        /*
1.3       kristaps  192:         * Choose a layout row: take the one following the last parsed
                    193:         * span's.  If that doesn't exist, use the last parsed span's.
1.15      kristaps  194:         * If there's no last parsed span, use the first row.  Lastly,
                    195:         * if the last span was a horizontal line, use the same layout
                    196:         * (it doesn't "consume" the layout).
1.3       kristaps  197:         */
                    198:
1.37      schwarze  199:        if (tbl->last_span != NULL) {
1.20      schwarze  200:                if (tbl->last_span->pos == TBL_SPAN_DATA) {
                    201:                        for (rp = tbl->last_span->layout->next;
1.37      schwarze  202:                             rp != NULL && rp->first != NULL;
                    203:                             rp = rp->next) {
1.20      schwarze  204:                                switch (rp->first->pos) {
1.30      schwarze  205:                                case TBL_CELL_HORIZ:
1.22      kristaps  206:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  207:                                        dp->pos = TBL_SPAN_HORIZ;
                    208:                                        continue;
1.30      schwarze  209:                                case TBL_CELL_DHORIZ:
1.22      kristaps  210:                                        dp = newspan(tbl, ln, rp);
1.20      schwarze  211:                                        dp->pos = TBL_SPAN_DHORIZ;
                    212:                                        continue;
                    213:                                default:
                    214:                                        break;
                    215:                                }
                    216:                                break;
                    217:                        }
                    218:                } else
1.15      kristaps  219:                        rp = tbl->last_span->layout;
1.18      kristaps  220:
1.37      schwarze  221:                if (rp == NULL)
1.3       kristaps  222:                        rp = tbl->last_span->layout;
                    223:        } else
                    224:                rp = tbl->first_row;
1.18      kristaps  225:
                    226:        assert(rp);
1.3       kristaps  227:
1.22      kristaps  228:        dp = newspan(tbl, ln, rp);
1.2       kristaps  229:
1.1       kristaps  230:        if ( ! strcmp(p, "_")) {
1.5       kristaps  231:                dp->pos = TBL_SPAN_HORIZ;
1.33      schwarze  232:                return;
1.1       kristaps  233:        } else if ( ! strcmp(p, "=")) {
1.5       kristaps  234:                dp->pos = TBL_SPAN_DHORIZ;
1.33      schwarze  235:                return;
1.1       kristaps  236:        }
1.5       kristaps  237:
                    238:        dp->pos = TBL_SPAN_DATA;
1.1       kristaps  239:
1.37      schwarze  240:        while (p[pos] != '\0')
1.33      schwarze  241:                getdata(tbl, dp, ln, p, &pos);
1.1       kristaps  242: }

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