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Annotation of mandoc/tbl_data.c, Revision 1.5

1.5     ! kristaps    1: /*     $Id: tbl_data.c,v 1.4 2011/01/01 13:37:40 kristaps Exp $ */
1.1       kristaps    2: /*
                      3:  * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
                      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>
                     18: #include <ctype.h>
                     19: #include <stdlib.h>
                     20: #include <string.h>
                     21:
                     22: #include "mandoc.h"
                     23: #include "libmandoc.h"
                     24: #include "libroff.h"
                     25:
                     26: static void    data(struct tbl *, struct tbl_span *,
                     27:                        int, const char *, int *);
                     28:
                     29: void
                     30: data(struct tbl *tbl, struct tbl_span *dp,
                     31:                int ln, const char *p, int *pos)
                     32: {
                     33:        struct tbl_dat  *dat;
1.3       kristaps   34:        struct tbl_cell *cp;
1.1       kristaps   35:        int              sv;
                     36:
1.3       kristaps   37:        cp = NULL;
                     38:        if (dp->last && dp->last->layout)
                     39:                cp = dp->last->layout->next;
                     40:        else if (NULL == dp->last)
                     41:                cp = dp->layout->first;
                     42:
                     43:        /* Skip over spanners to data formats. */
                     44:
                     45:        while (cp && (TBL_CELL_VERT == cp->pos ||
                     46:                                TBL_CELL_DVERT == cp->pos))
                     47:                cp = cp->next;
                     48:
1.1       kristaps   49:        /* FIXME: warn about losing data contents if cell is HORIZ. */
                     50:
                     51:        dat = mandoc_calloc(1, sizeof(struct tbl_dat));
1.3       kristaps   52:        dat->layout = cp;
1.1       kristaps   53:
                     54:        if (dp->last) {
                     55:                dp->last->next = dat;
                     56:                dp->last = dat;
                     57:        } else
                     58:                dp->last = dp->first = dat;
                     59:
                     60:        sv = *pos;
                     61:        while (p[*pos] && p[*pos] != tbl->tab)
                     62:                (*pos)++;
                     63:
                     64:        dat->string = mandoc_malloc(*pos - sv + 1);
                     65:        memcpy(dat->string, &p[sv], *pos - sv);
                     66:        dat->string[*pos - sv] = '\0';
                     67:
                     68:        if (p[*pos])
                     69:                (*pos)++;
                     70:
                     71:        if ( ! strcmp(dat->string, "_"))
1.5     ! kristaps   72:                dat->pos = TBL_DATA_HORIZ;
1.1       kristaps   73:        else if ( ! strcmp(dat->string, "="))
1.5     ! kristaps   74:                dat->pos = TBL_DATA_DHORIZ;
1.1       kristaps   75:        else if ( ! strcmp(dat->string, "\\_"))
1.5     ! kristaps   76:                dat->pos = TBL_DATA_NHORIZ;
1.1       kristaps   77:        else if ( ! strcmp(dat->string, "\\="))
1.5     ! kristaps   78:                dat->pos = TBL_DATA_NDHORIZ;
        !            79:        else
        !            80:                dat->pos = TBL_DATA_DATA;
1.1       kristaps   81: }
                     82:
1.2       kristaps   83: int
1.1       kristaps   84: tbl_data(struct tbl *tbl, int ln, const char *p)
                     85: {
                     86:        struct tbl_span *dp;
1.3       kristaps   87:        struct tbl_row  *rp;
1.1       kristaps   88:        int              pos;
                     89:
                     90:        pos = 0;
                     91:
                     92:        if ('\0' == p[pos]) {
                     93:                TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
1.4       kristaps   94:                return(0);
1.1       kristaps   95:        }
                     96:
1.3       kristaps   97:        /*
                     98:         * Choose a layout row: take the one following the last parsed
                     99:         * span's.  If that doesn't exist, use the last parsed span's.
                    100:         * If there's no last parsed span, use the first row.  This can
                    101:         * be NULL!
                    102:         */
                    103:
                    104:        if (tbl->last_span) {
                    105:                assert(tbl->last_span->layout);
                    106:                rp = tbl->last_span->layout->next;
                    107:                if (NULL == rp)
                    108:                        rp = tbl->last_span->layout;
                    109:        } else
                    110:                rp = tbl->first_row;
                    111:
1.1       kristaps  112:        dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.3       kristaps  113:        dp->layout = rp;
1.1       kristaps  114:
1.2       kristaps  115:        if (tbl->last_span) {
                    116:                tbl->last_span->next = dp;
                    117:                tbl->last_span = dp;
                    118:        } else
                    119:                tbl->last_span = tbl->first_span = dp;
                    120:
1.1       kristaps  121:        if ( ! strcmp(p, "_")) {
1.5     ! kristaps  122:                dp->pos = TBL_SPAN_HORIZ;
1.2       kristaps  123:                return(1);
1.1       kristaps  124:        } else if ( ! strcmp(p, "=")) {
1.5     ! kristaps  125:                dp->pos = TBL_SPAN_DHORIZ;
1.2       kristaps  126:                return(1);
1.1       kristaps  127:        }
1.5     ! kristaps  128:
        !           129:        dp->pos = TBL_SPAN_DATA;
1.1       kristaps  130:
                    131:        while ('\0' != p[pos])
                    132:                data(tbl, dp, ln, p, &pos);
                    133:
1.2       kristaps  134:        return(1);
1.1       kristaps  135: }