1 /* $Id: out.c,v 1.46 2013/10/05 20:30:05 schwarze Exp $ */ 2 /* 3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> 4 * Copyright (c) 2011 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 #ifdef HAVE_CONFIG_H 19 #include "config.h" 20 #endif 21 22 #include <sys/types.h> 23 24 #include <assert.h> 25 #include <ctype.h> 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <string.h> 29 #include <time.h> 30 31 #include "mandoc.h" 32 #include "out.h" 33 34 static void tblcalc_data(struct rofftbl *, struct roffcol *, 35 const struct tbl_opts *, const struct tbl_dat *); 36 static void tblcalc_literal(struct rofftbl *, struct roffcol *, 37 const struct tbl_dat *); 38 static void tblcalc_number(struct rofftbl *, struct roffcol *, 39 const struct tbl_opts *, const struct tbl_dat *); 40 41 /* 42 * Convert a `scaling unit' to a consistent form, or fail. Scaling 43 * units are documented in groff.7, mdoc.7, man.7. 44 */ 45 int 46 a2roffsu(const char *src, struct roffsu *dst, enum roffscale def) 47 { 48 char buf[BUFSIZ], hasd; 49 int i; 50 enum roffscale unit; 51 52 if ('\0' == *src) 53 return(0); 54 55 i = hasd = 0; 56 57 switch (*src) { 58 case ('+'): 59 src++; 60 break; 61 case ('-'): 62 buf[i++] = *src++; 63 break; 64 default: 65 break; 66 } 67 68 if ('\0' == *src) 69 return(0); 70 71 while (i < BUFSIZ) { 72 if ( ! isdigit((unsigned char)*src)) { 73 if ('.' != *src) 74 break; 75 else if (hasd) 76 break; 77 else 78 hasd = 1; 79 } 80 buf[i++] = *src++; 81 } 82 83 if (BUFSIZ == i || (*src && *(src + 1))) 84 return(0); 85 86 buf[i] = '\0'; 87 88 switch (*src) { 89 case ('c'): 90 unit = SCALE_CM; 91 break; 92 case ('i'): 93 unit = SCALE_IN; 94 break; 95 case ('P'): 96 unit = SCALE_PC; 97 break; 98 case ('p'): 99 unit = SCALE_PT; 100 break; 101 case ('f'): 102 unit = SCALE_FS; 103 break; 104 case ('v'): 105 unit = SCALE_VS; 106 break; 107 case ('m'): 108 unit = SCALE_EM; 109 break; 110 case ('\0'): 111 if (SCALE_MAX == def) 112 return(0); 113 unit = SCALE_BU; 114 break; 115 case ('u'): 116 unit = SCALE_BU; 117 break; 118 case ('M'): 119 unit = SCALE_MM; 120 break; 121 case ('n'): 122 unit = SCALE_EN; 123 break; 124 default: 125 return(0); 126 } 127 128 /* FIXME: do this in the caller. */ 129 if ((dst->scale = atof(buf)) < 0) 130 dst->scale = 0; 131 dst->unit = unit; 132 return(1); 133 } 134 135 /* 136 * Calculate the abstract widths and decimal positions of columns in a 137 * table. This routine allocates the columns structures then runs over 138 * all rows and cells in the table. The function pointers in "tbl" are 139 * used for the actual width calculations. 140 */ 141 void 142 tblcalc(struct rofftbl *tbl, const struct tbl_span *sp) 143 { 144 const struct tbl_dat *dp; 145 struct roffcol *col; 146 int spans; 147 148 /* 149 * Allocate the master column specifiers. These will hold the 150 * widths and decimal positions for all cells in the column. It 151 * must be freed and nullified by the caller. 152 */ 153 154 assert(NULL == tbl->cols); 155 tbl->cols = mandoc_calloc 156 ((size_t)sp->opts->cols, sizeof(struct roffcol)); 157 158 for ( ; sp; sp = sp->next) { 159 if (TBL_SPAN_DATA != sp->pos) 160 continue; 161 spans = 1; 162 /* 163 * Account for the data cells in the layout, matching it 164 * to data cells in the data section. 165 */ 166 for (dp = sp->first; dp; dp = dp->next) { 167 /* Do not used spanned cells in the calculation. */ 168 if (0 < --spans) 169 continue; 170 spans = dp->spans; 171 if (1 < spans) 172 continue; 173 assert(dp->layout); 174 col = &tbl->cols[dp->layout->head->ident]; 175 tblcalc_data(tbl, col, sp->opts, dp); 176 } 177 } 178 } 179 180 static void 181 tblcalc_data(struct rofftbl *tbl, struct roffcol *col, 182 const struct tbl_opts *opts, const struct tbl_dat *dp) 183 { 184 size_t sz; 185 186 /* Branch down into data sub-types. */ 187 188 switch (dp->layout->pos) { 189 case (TBL_CELL_HORIZ): 190 /* FALLTHROUGH */ 191 case (TBL_CELL_DHORIZ): 192 sz = (*tbl->len)(1, tbl->arg); 193 if (col->width < sz) 194 col->width = sz; 195 break; 196 case (TBL_CELL_LONG): 197 /* FALLTHROUGH */ 198 case (TBL_CELL_CENTRE): 199 /* FALLTHROUGH */ 200 case (TBL_CELL_LEFT): 201 /* FALLTHROUGH */ 202 case (TBL_CELL_RIGHT): 203 tblcalc_literal(tbl, col, dp); 204 break; 205 case (TBL_CELL_NUMBER): 206 tblcalc_number(tbl, col, opts, dp); 207 break; 208 case (TBL_CELL_DOWN): 209 break; 210 default: 211 abort(); 212 /* NOTREACHED */ 213 } 214 } 215 216 static void 217 tblcalc_literal(struct rofftbl *tbl, struct roffcol *col, 218 const struct tbl_dat *dp) 219 { 220 size_t sz; 221 const char *str; 222 223 str = dp->string ? dp->string : ""; 224 sz = (*tbl->slen)(str, tbl->arg); 225 226 if (col->width < sz) 227 col->width = sz; 228 } 229 230 static void 231 tblcalc_number(struct rofftbl *tbl, struct roffcol *col, 232 const struct tbl_opts *opts, const struct tbl_dat *dp) 233 { 234 int i; 235 size_t sz, psz, ssz, d; 236 const char *str; 237 char *cp; 238 char buf[2]; 239 240 /* 241 * First calculate number width and decimal place (last + 1 for 242 * non-decimal numbers). If the stored decimal is subsequent to 243 * ours, make our size longer by that difference 244 * (right-"shifting"); similarly, if ours is subsequent the 245 * stored, then extend the stored size by the difference. 246 * Finally, re-assign the stored values. 247 */ 248 249 str = dp->string ? dp->string : ""; 250 sz = (*tbl->slen)(str, tbl->arg); 251 252 /* FIXME: TBL_DATA_HORIZ et al.? */ 253 254 buf[0] = opts->decimal; 255 buf[1] = '\0'; 256 257 psz = (*tbl->slen)(buf, tbl->arg); 258 259 if (NULL != (cp = strrchr(str, opts->decimal))) { 260 buf[1] = '\0'; 261 for (ssz = 0, i = 0; cp != &str[i]; i++) { 262 buf[0] = str[i]; 263 ssz += (*tbl->slen)(buf, tbl->arg); 264 } 265 d = ssz + psz; 266 } else 267 d = sz + psz; 268 269 /* Adjust the settings for this column. */ 270 271 if (col->decimal > d) { 272 sz += col->decimal - d; 273 d = col->decimal; 274 } else 275 col->width += d - col->decimal; 276 277 if (sz > col->width) 278 col->width = sz; 279 if (d > col->decimal) 280 col->decimal = d; 281 } 282