1/* $Id: tbl_data.c,v 1.45 2017/07/08 17:52:50 schwarze Exp $ */ 2/* 3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2011, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org> 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 */ 18#include "config.h" 19 20#include <sys/types.h> 21 22#include <assert.h> 23#include <ctype.h> 24#include <stdlib.h> 25#include <string.h> 26#include <time.h> 27 28#include "mandoc.h" 29#include "mandoc_aux.h" 30#include "libmandoc.h" 31#include "libroff.h" 32 33static void getdata(struct tbl_node *, struct tbl_span *, 34 int, const char *, int *); 35static struct tbl_span *newspan(struct tbl_node *, int, 36 struct tbl_row *); 37 38 39static void 40getdata(struct tbl_node *tbl, struct tbl_span *dp, 41 int ln, const char *p, int *pos) 42{ 43 struct tbl_dat *dat; 44 struct tbl_cell *cp; 45 int sv; 46 47 /* Advance to the next layout cell, skipping spanners. */ 48 49 cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next; 50 while (cp != NULL && cp->pos == TBL_CELL_SPAN) 51 cp = cp->next; 52 53 /* 54 * If the current layout row is out of cells, allocate 55 * a new cell if another row of the table has at least 56 * this number of columns, or discard the input if we 57 * are beyond the last column of the table as a whole. 58 */ 59 60 if (cp == NULL) { 61 if (dp->layout->last->col + 1 < dp->opts->cols) { 62 cp = mandoc_calloc(1, sizeof(*cp)); 63 cp->pos = TBL_CELL_LEFT; 64 dp->layout->last->next = cp; 65 cp->col = dp->layout->last->col + 1; 66 dp->layout->last = cp; 67 } else { 68 mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse, 69 ln, *pos, p + *pos); 70 while (p[*pos]) 71 (*pos)++; 72 return; 73 } 74 } 75 76 dat = mandoc_calloc(1, sizeof(*dat)); 77 dat->layout = cp; 78 dat->pos = TBL_DATA_NONE; 79 dat->spans = 0; 80 for (cp = cp->next; cp != NULL; cp = cp->next) 81 if (cp->pos == TBL_CELL_SPAN) 82 dat->spans++; 83 else 84 break; 85 86 if (dp->last == NULL) 87 dp->first = dat; 88 else 89 dp->last->next = dat; 90 dp->last = dat; 91 92 sv = *pos; 93 while (p[*pos] && p[*pos] != tbl->opts.tab) 94 (*pos)++; 95 96 /* 97 * Check for a continued-data scope opening. This consists of a 98 * trailing `T{' at the end of the line. Subsequent lines, 99 * until a standalone `T}', are included in our cell. 100 */ 101 102 if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') { 103 tbl->part = TBL_PART_CDATA; 104 return; 105 } 106 107 dat->string = mandoc_strndup(p + sv, *pos - sv); 108 109 if (p[*pos]) 110 (*pos)++; 111 112 if ( ! strcmp(dat->string, "_")) 113 dat->pos = TBL_DATA_HORIZ; 114 else if ( ! strcmp(dat->string, "=")) 115 dat->pos = TBL_DATA_DHORIZ; 116 else if ( ! strcmp(dat->string, "\\_")) 117 dat->pos = TBL_DATA_NHORIZ; 118 else if ( ! strcmp(dat->string, "\\=")) 119 dat->pos = TBL_DATA_NDHORIZ; 120 else 121 dat->pos = TBL_DATA_DATA; 122 123 if ((dat->layout->pos == TBL_CELL_HORIZ || 124 dat->layout->pos == TBL_CELL_DHORIZ || 125 dat->layout->pos == TBL_CELL_DOWN) && 126 dat->pos == TBL_DATA_DATA && *dat->string != '\0') 127 mandoc_msg(MANDOCERR_TBLDATA_SPAN, 128 tbl->parse, ln, sv, dat->string); 129} 130 131void 132tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos) 133{ 134 struct tbl_dat *dat; 135 size_t sz; 136 137 dat = tbl->last_span->last; 138 139 if (p[pos] == 'T' && p[pos + 1] == '}') { 140 pos += 2; 141 if (p[pos] == tbl->opts.tab) { 142 tbl->part = TBL_PART_DATA; 143 pos++; 144 while (p[pos] != '\0') 145 getdata(tbl, tbl->last_span, ln, p, &pos); 146 return; 147 } else if (p[pos] == '\0') { 148 tbl->part = TBL_PART_DATA; 149 return; 150 } 151 152 /* Fallthrough: T} is part of a word. */ 153 } 154 155 dat->pos = TBL_DATA_DATA; 156 dat->block = 1; 157 158 if (dat->string != NULL) { 159 sz = strlen(p + pos) + strlen(dat->string) + 2; 160 dat->string = mandoc_realloc(dat->string, sz); 161 (void)strlcat(dat->string, " ", sz); 162 (void)strlcat(dat->string, p + pos, sz); 163 } else 164 dat->string = mandoc_strdup(p + pos); 165 166 if (dat->layout->pos == TBL_CELL_DOWN) 167 mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse, 168 ln, pos, dat->string); 169} 170 171static struct tbl_span * 172newspan(struct tbl_node *tbl, int line, struct tbl_row *rp) 173{ 174 struct tbl_span *dp; 175 176 dp = mandoc_calloc(1, sizeof(*dp)); 177 dp->line = line; 178 dp->opts = &tbl->opts; 179 dp->layout = rp; 180 dp->prev = tbl->last_span; 181 182 if (dp->prev == NULL) { 183 tbl->first_span = dp; 184 tbl->current_span = NULL; 185 } else 186 dp->prev->next = dp; 187 tbl->last_span = dp; 188 189 return dp; 190} 191 192void 193tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos) 194{ 195 struct tbl_row *rp; 196 struct tbl_cell *cp; 197 struct tbl_span *sp; 198 199 rp = (sp = tbl->last_span) == NULL ? tbl->first_row : 200 sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ? 201 sp->layout->next : sp->layout; 202 203 assert(rp != NULL); 204 205 if ( ! strcmp(p, "_")) { 206 sp = newspan(tbl, ln, rp); 207 sp->pos = TBL_SPAN_HORIZ; 208 return; 209 } else if ( ! strcmp(p, "=")) { 210 sp = newspan(tbl, ln, rp); 211 sp->pos = TBL_SPAN_DHORIZ; 212 return; 213 } 214 215 /* 216 * If the layout row contains nothing but horizontal lines, 217 * allocate an empty span for it and assign the current span 218 * to the next layout row accepting data. 219 */ 220 221 while (rp->next != NULL) { 222 if (rp->last->col + 1 < tbl->opts.cols) 223 break; 224 for (cp = rp->first; cp != NULL; cp = cp->next) 225 if (cp->pos != TBL_CELL_HORIZ && 226 cp->pos != TBL_CELL_DHORIZ) 227 break; 228 if (cp != NULL) 229 break; 230 sp = newspan(tbl, ln, rp); 231 sp->pos = TBL_SPAN_DATA; 232 rp = rp->next; 233 } 234 235 /* Process a real data row. */ 236 237 sp = newspan(tbl, ln, rp); 238 sp->pos = TBL_SPAN_DATA; 239 while (p[pos] != '\0') 240 getdata(tbl, sp, ln, p, &pos); 241} 242