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Annotation of mandoc/tbl_data.c, Revision 1.15

1.15    ! kristaps    1: /*     $Id: tbl_data.c,v 1.14 2011/01/07 14:59:52 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:  */
1.11      kristaps   17: #ifdef HAVE_CONFIG_H
                     18: #include "config.h"
                     19: #endif
                     20:
1.1       kristaps   21: #include <assert.h>
                     22: #include <ctype.h>
                     23: #include <stdlib.h>
                     24: #include <string.h>
1.6       kristaps   25: #include <time.h>
1.1       kristaps   26:
                     27: #include "mandoc.h"
                     28: #include "libmandoc.h"
                     29: #include "libroff.h"
                     30:
1.11      kristaps   31: static int     data(struct tbl_node *, struct tbl_span *,
1.1       kristaps   32:                        int, const char *, int *);
                     33:
1.11      kristaps   34: static int
1.8       kristaps   35: data(struct tbl_node *tbl, struct tbl_span *dp,
1.1       kristaps   36:                int ln, const char *p, int *pos)
                     37: {
                     38:        struct tbl_dat  *dat;
1.3       kristaps   39:        struct tbl_cell *cp;
1.1       kristaps   40:        int              sv;
                     41:
1.3       kristaps   42:        cp = NULL;
                     43:        if (dp->last && dp->last->layout)
                     44:                cp = dp->last->layout->next;
                     45:        else if (NULL == dp->last)
                     46:                cp = dp->layout->first;
                     47:
1.12      kristaps   48:        /*
                     49:         * Skip over spanners and vertical lines to data formats, since
                     50:         * we want to match data with data layout cells in the header.
                     51:         */
1.3       kristaps   52:
                     53:        while (cp && (TBL_CELL_VERT == cp->pos ||
1.12      kristaps   54:                                TBL_CELL_DVERT == cp->pos ||
                     55:                                TBL_CELL_SPAN == cp->pos))
1.3       kristaps   56:                cp = cp->next;
                     57:
1.1       kristaps   58:        dat = mandoc_calloc(1, sizeof(struct tbl_dat));
1.3       kristaps   59:        dat->layout = cp;
1.11      kristaps   60:        dat->pos = TBL_DATA_NONE;
1.7       kristaps   61:
                     62:        if (NULL == dat->layout)
                     63:                TBL_MSG(tbl, MANDOCERR_TBLEXTRADAT, ln, *pos);
1.1       kristaps   64:
                     65:        if (dp->last) {
                     66:                dp->last->next = dat;
                     67:                dp->last = dat;
                     68:        } else
                     69:                dp->last = dp->first = dat;
                     70:
                     71:        sv = *pos;
1.8       kristaps   72:        while (p[*pos] && p[*pos] != tbl->opts.tab)
1.1       kristaps   73:                (*pos)++;
                     74:
1.11      kristaps   75:        /*
                     76:         * Check for a continued-data scope opening.  This consists of a
                     77:         * trailing `T{' at the end of the line.  Subsequent lines,
                     78:         * until a standalone `T}', are included in our cell.
                     79:         */
                     80:
                     81:        if (*pos - sv == 2 && 'T' == p[sv] && '{' == p[sv + 1]) {
                     82:                tbl->part = TBL_PART_CDATA;
                     83:                return(0);
                     84:        }
                     85:
1.1       kristaps   86:        dat->string = mandoc_malloc(*pos - sv + 1);
                     87:        memcpy(dat->string, &p[sv], *pos - sv);
                     88:        dat->string[*pos - sv] = '\0';
                     89:
                     90:        if (p[*pos])
                     91:                (*pos)++;
                     92:
                     93:        if ( ! strcmp(dat->string, "_"))
1.5       kristaps   94:                dat->pos = TBL_DATA_HORIZ;
1.1       kristaps   95:        else if ( ! strcmp(dat->string, "="))
1.5       kristaps   96:                dat->pos = TBL_DATA_DHORIZ;
1.1       kristaps   97:        else if ( ! strcmp(dat->string, "\\_"))
1.5       kristaps   98:                dat->pos = TBL_DATA_NHORIZ;
1.1       kristaps   99:        else if ( ! strcmp(dat->string, "\\="))
1.5       kristaps  100:                dat->pos = TBL_DATA_NDHORIZ;
                    101:        else
                    102:                dat->pos = TBL_DATA_DATA;
1.10      kristaps  103:
1.11      kristaps  104:        if (NULL == dat->layout)
                    105:                return(1);
                    106:
1.10      kristaps  107:        if (TBL_CELL_HORIZ == dat->layout->pos ||
                    108:                        TBL_CELL_DHORIZ == dat->layout->pos)
                    109:                if (TBL_DATA_DATA == dat->pos && '\0' != *dat->string)
                    110:                        TBL_MSG(tbl, MANDOCERR_TBLIGNDATA, ln, sv);
1.11      kristaps  111:
                    112:        return(1);
                    113: }
                    114:
1.13      kristaps  115: /* ARGSUSED */
1.11      kristaps  116: int
                    117: tbl_cdata(struct tbl_node *tbl, int ln, const char *p)
                    118: {
                    119:        struct tbl_dat  *dat;
                    120:        size_t           sz;
1.14      kristaps  121:        int              pos;
1.11      kristaps  122:
1.14      kristaps  123:        pos = 0;
1.11      kristaps  124:
                    125:        dat = tbl->last_span->last;
                    126:        dat->pos = TBL_DATA_DATA;
1.14      kristaps  127:
                    128:        if (p[pos] == 'T' && p[pos + 1] == '}') {
                    129:                pos += 2;
                    130:                if (p[pos] == tbl->opts.tab) {
                    131:                        tbl->part = TBL_PART_DATA;
                    132:                        pos++;
                    133:                        return(data(tbl, tbl->last_span, ln, p, &pos));
                    134:                } else if ('\0' == p[pos]) {
                    135:                        tbl->part = TBL_PART_DATA;
                    136:                        return(1);
                    137:                }
                    138:
                    139:                /* Fallthrough: T} is part of a word. */
                    140:        }
1.11      kristaps  141:
                    142:        if (dat->string) {
                    143:                sz = strlen(p) + strlen(dat->string) + 2;
                    144:                dat->string = mandoc_realloc(dat->string, sz);
                    145:                strlcat(dat->string, " ", sz);
                    146:                strlcat(dat->string, p, sz);
                    147:        } else
                    148:                dat->string = mandoc_strdup(p);
                    149:
                    150:        return(0);
1.1       kristaps  151: }
                    152:
1.2       kristaps  153: int
1.8       kristaps  154: tbl_data(struct tbl_node *tbl, int ln, const char *p)
1.1       kristaps  155: {
                    156:        struct tbl_span *dp;
1.3       kristaps  157:        struct tbl_row  *rp;
1.1       kristaps  158:        int              pos;
                    159:
                    160:        pos = 0;
                    161:
                    162:        if ('\0' == p[pos]) {
                    163:                TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
1.4       kristaps  164:                return(0);
1.1       kristaps  165:        }
                    166:
1.3       kristaps  167:        /*
                    168:         * Choose a layout row: take the one following the last parsed
                    169:         * span's.  If that doesn't exist, use the last parsed span's.
1.15    ! kristaps  170:         * If there's no last parsed span, use the first row.  Lastly,
        !           171:         * if the last span was a horizontal line, use the same layout
        !           172:         * (it doesn't "consume" the layout).
        !           173:         *
        !           174:         * In the end, this can be NULL!
1.3       kristaps  175:         */
                    176:
                    177:        if (tbl->last_span) {
                    178:                assert(tbl->last_span->layout);
1.15    ! kristaps  179:                if (tbl->last_span->pos == TBL_SPAN_DATA)
        !           180:                        rp = tbl->last_span->layout->next;
        !           181:                else
        !           182:                        rp = tbl->last_span->layout;
1.3       kristaps  183:                if (NULL == rp)
                    184:                        rp = tbl->last_span->layout;
                    185:        } else
                    186:                rp = tbl->first_row;
                    187:
1.1       kristaps  188:        dp = mandoc_calloc(1, sizeof(struct tbl_span));
1.9       kristaps  189:        dp->tbl = &tbl->opts;
1.3       kristaps  190:        dp->layout = rp;
1.9       kristaps  191:        dp->head = tbl->first_head;
1.1       kristaps  192:
1.2       kristaps  193:        if (tbl->last_span) {
                    194:                tbl->last_span->next = dp;
                    195:                tbl->last_span = dp;
1.9       kristaps  196:        } else {
1.2       kristaps  197:                tbl->last_span = tbl->first_span = dp;
1.9       kristaps  198:                dp->flags |= TBL_SPAN_FIRST;
                    199:        }
1.2       kristaps  200:
1.1       kristaps  201:        if ( ! strcmp(p, "_")) {
1.5       kristaps  202:                dp->pos = TBL_SPAN_HORIZ;
1.2       kristaps  203:                return(1);
1.1       kristaps  204:        } else if ( ! strcmp(p, "=")) {
1.5       kristaps  205:                dp->pos = TBL_SPAN_DHORIZ;
1.2       kristaps  206:                return(1);
1.1       kristaps  207:        }
1.5       kristaps  208:
                    209:        dp->pos = TBL_SPAN_DATA;
1.1       kristaps  210:
1.11      kristaps  211:        /* This returns 0 when TBL_PART_CDATA is entered. */
                    212:
1.1       kristaps  213:        while ('\0' != p[pos])
1.11      kristaps  214:                if ( ! data(tbl, dp, ln, p, &pos))
                    215:                        return(0);
1.1       kristaps  216:
1.2       kristaps  217:        return(1);
1.1       kristaps  218: }

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