| 1 | /* This file is part of the program psim. |
| 2 | |
| 3 | Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au> |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | #include <sys/types.h> |
| 22 | #include <sys/stat.h> |
| 23 | #include <stdio.h> |
| 24 | #include <fcntl.h> |
| 25 | #include <ctype.h> |
| 26 | |
| 27 | #include "build-config.h" |
| 28 | #include "misc.h" |
| 29 | #include "lf.h" |
| 30 | #include "table.h" |
| 31 | |
| 32 | #ifdef HAVE_UNISTD_H |
| 33 | #include <unistd.h> |
| 34 | #endif |
| 35 | |
| 36 | #ifdef HAVE_STDLIB_H |
| 37 | #include <stdlib.h> |
| 38 | #endif |
| 39 | |
| 40 | typedef struct _open_table open_table; |
| 41 | struct _open_table { |
| 42 | size_t size; |
| 43 | char *buffer; |
| 44 | char *pos; |
| 45 | int line_nr; |
| 46 | int nr_fields; |
| 47 | int nr_model_fields; |
| 48 | char *file_name; |
| 49 | open_table *parent; |
| 50 | table *root; |
| 51 | }; |
| 52 | struct _table { |
| 53 | open_table *current; |
| 54 | }; |
| 55 | |
| 56 | void |
| 57 | table_push (table *root, |
| 58 | table_include *includes, |
| 59 | const char *file_name, |
| 60 | int nr_fields, |
| 61 | int nr_model_fields) |
| 62 | |
| 63 | { |
| 64 | int fd; |
| 65 | struct stat stat_buf; |
| 66 | open_table *file; |
| 67 | table_include dummy; |
| 68 | table_include *include = &dummy; |
| 69 | int nr; |
| 70 | |
| 71 | /* dummy up a search of this directory */ |
| 72 | dummy.next = includes; |
| 73 | dummy.dir = ""; |
| 74 | |
| 75 | /* create a file descriptor */ |
| 76 | file = ZALLOC (open_table); |
| 77 | ASSERT(file != NULL); |
| 78 | file->nr_fields = nr_fields; |
| 79 | file->nr_model_fields = nr_model_fields; |
| 80 | file->root = root; |
| 81 | file->parent = root->current; |
| 82 | root->current = file; |
| 83 | |
| 84 | while (1) |
| 85 | { |
| 86 | /* save the file name */ |
| 87 | char *dup_name = NZALLOC (char, strlen (include->dir) + strlen (file_name) + 2); |
| 88 | if (dup_name == NULL) |
| 89 | { |
| 90 | perror (file_name); |
| 91 | exit (1); |
| 92 | } |
| 93 | if (include->dir[0] != '\0') |
| 94 | { |
| 95 | strcat (dup_name, include->dir); |
| 96 | strcat (dup_name, "/"); |
| 97 | } |
| 98 | strcat (dup_name, file_name); |
| 99 | file->file_name = dup_name; |
| 100 | /* open the file */ |
| 101 | fd = open (dup_name, O_RDONLY, 0); |
| 102 | if (fd >= 0) |
| 103 | break; |
| 104 | /* free (dup_name); */ |
| 105 | if (include->next == NULL) |
| 106 | { |
| 107 | error ("Problem opening file `%s'\n", file_name); |
| 108 | perror (file_name); |
| 109 | exit (1); |
| 110 | } |
| 111 | include = include->next; |
| 112 | } |
| 113 | |
| 114 | /* determine the size */ |
| 115 | if (fstat(fd, &stat_buf) < 0) { |
| 116 | perror("table_open.fstat"); |
| 117 | exit(1); |
| 118 | } |
| 119 | file->size = stat_buf.st_size; |
| 120 | |
| 121 | /* allocate this much memory */ |
| 122 | file->buffer = (char*)zalloc(file->size+1); |
| 123 | if(file->buffer == NULL) { |
| 124 | perror("table_open.calloc.file->size+1"); |
| 125 | exit(1); |
| 126 | } |
| 127 | file->pos = file->buffer; |
| 128 | |
| 129 | /* read it in */ |
| 130 | #ifdef __CYGWIN32__ |
| 131 | if ((file->size) && ((nr = read(fd, file->buffer, file->size)) <= 0)) { |
| 132 | #else |
| 133 | if ((nr = read(fd, file->buffer, file->size)) < file->size) { |
| 134 | #endif |
| 135 | perror("table_open.read"); |
| 136 | exit(1); |
| 137 | } |
| 138 | file->size = nr; |
| 139 | file->buffer[file->size] = '\0'; |
| 140 | |
| 141 | /* done */ |
| 142 | close(fd); |
| 143 | } |
| 144 | |
| 145 | extern table * |
| 146 | table_open(const char *file_name, |
| 147 | int nr_fields, |
| 148 | int nr_model_fields) |
| 149 | { |
| 150 | table *root; |
| 151 | |
| 152 | /* create a file descriptor */ |
| 153 | root = ZALLOC (table); |
| 154 | if (root == NULL) |
| 155 | { |
| 156 | perror (file_name); |
| 157 | exit (1); |
| 158 | } |
| 159 | |
| 160 | table_push (root, NULL, file_name, nr_fields, nr_model_fields); |
| 161 | return root; |
| 162 | } |
| 163 | |
| 164 | extern table_entry * |
| 165 | table_entry_read(table *root) |
| 166 | { |
| 167 | open_table *file = root->current; |
| 168 | int field; |
| 169 | table_entry *entry; |
| 170 | |
| 171 | /* skip comments/blanks */ |
| 172 | while(1) { |
| 173 | /* end-of-file? */ |
| 174 | while (*file->pos == '\0') |
| 175 | { |
| 176 | if (file->parent != NULL) |
| 177 | { |
| 178 | file = file->parent; |
| 179 | root->current = file; |
| 180 | } |
| 181 | else |
| 182 | return NULL; |
| 183 | } |
| 184 | /* leading white space */ |
| 185 | while (*file->pos != '\0' |
| 186 | && *file->pos != '\n' |
| 187 | && isspace(*file->pos)) |
| 188 | file->pos++; |
| 189 | /* comment */ |
| 190 | if (*file->pos == '#') { |
| 191 | do { |
| 192 | file->pos++; |
| 193 | } while (*file->pos != '\0' && *file->pos != '\n'); |
| 194 | } |
| 195 | /* end of line? */ |
| 196 | if (*file->pos == '\n') { |
| 197 | file->pos++; |
| 198 | file->line_nr++; |
| 199 | } |
| 200 | else |
| 201 | break; |
| 202 | } |
| 203 | |
| 204 | /* create this new entry */ |
| 205 | entry = (table_entry*)zalloc(sizeof(table_entry) |
| 206 | + (file->nr_fields + 1) * sizeof(char*)); |
| 207 | ASSERT(entry != NULL); |
| 208 | entry->file_name = file->file_name; |
| 209 | entry->nr_fields = file->nr_fields; |
| 210 | |
| 211 | /* break the line into its colon delimitered fields */ |
| 212 | for (field = 0; field < file->nr_fields-1; field++) { |
| 213 | entry->fields[field] = file->pos; |
| 214 | while(*file->pos && *file->pos != ':' && *file->pos != '\n') |
| 215 | file->pos++; |
| 216 | if (*file->pos == ':') { |
| 217 | *file->pos = '\0'; |
| 218 | file->pos++; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | /* any trailing stuff not the last field */ |
| 223 | ASSERT(field == file->nr_fields-1); |
| 224 | entry->fields[field] = file->pos; |
| 225 | while (*file->pos && *file->pos != '\n') { |
| 226 | file->pos++; |
| 227 | } |
| 228 | if (*file->pos == '\n') { |
| 229 | *file->pos = '\0'; |
| 230 | file->pos++; |
| 231 | } |
| 232 | file->line_nr++; |
| 233 | |
| 234 | /* if following lines begin with a star, add them to the model |
| 235 | section. */ |
| 236 | while ((file->nr_model_fields > 0) && (*file->pos == '*')) { |
| 237 | table_model_entry *model = (table_model_entry*)zalloc(sizeof(table_model_entry) |
| 238 | + (file->nr_model_fields + 1) * sizeof(char*)); |
| 239 | if (entry->model_last) |
| 240 | entry->model_last->next = model; |
| 241 | else |
| 242 | entry->model_first = model; |
| 243 | entry->model_last = model; |
| 244 | |
| 245 | /* break the line into its colon delimitered fields */ |
| 246 | file->pos++; |
| 247 | for (field = 0; field < file->nr_model_fields-1; field++) { |
| 248 | model->fields[field] = file->pos; |
| 249 | while(*file->pos && *file->pos != ':' && *file->pos != '\n') |
| 250 | file->pos++; |
| 251 | if (*file->pos == ':') { |
| 252 | *file->pos = '\0'; |
| 253 | file->pos++; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | /* any trailing stuff not the last field */ |
| 258 | ASSERT(field == file->nr_model_fields-1); |
| 259 | model->fields[field] = file->pos; |
| 260 | while (*file->pos && *file->pos != '\n') { |
| 261 | file->pos++; |
| 262 | } |
| 263 | if (*file->pos == '\n') { |
| 264 | *file->pos = '\0'; |
| 265 | file->pos++; |
| 266 | } |
| 267 | |
| 268 | file->line_nr++; |
| 269 | model->line_nr = file->line_nr; |
| 270 | } |
| 271 | |
| 272 | entry->line_nr = file->line_nr; |
| 273 | |
| 274 | /* if following lines are tab indented, put in the annex */ |
| 275 | if (*file->pos == '\t') { |
| 276 | entry->annex = file->pos; |
| 277 | do { |
| 278 | do { |
| 279 | file->pos++; |
| 280 | } while (*file->pos != '\0' && *file->pos != '\n'); |
| 281 | if (*file->pos == '\n') { |
| 282 | char *save_pos = ++file->pos; |
| 283 | int extra_lines = 0; |
| 284 | file->line_nr++; |
| 285 | /* Allow tab indented to have blank lines */ |
| 286 | while (*save_pos == '\n') { |
| 287 | save_pos++; |
| 288 | extra_lines++; |
| 289 | } |
| 290 | if (*save_pos == '\t') { |
| 291 | file->pos = save_pos; |
| 292 | file->line_nr += extra_lines; |
| 293 | } |
| 294 | } |
| 295 | } while (*file->pos != '\0' && *file->pos == '\t'); |
| 296 | if (file->pos[-1] == '\n') |
| 297 | file->pos[-1] = '\0'; |
| 298 | } |
| 299 | else |
| 300 | entry->annex = NULL; |
| 301 | |
| 302 | /* return it */ |
| 303 | return entry; |
| 304 | |
| 305 | } |
| 306 | |
| 307 | |
| 308 | extern void |
| 309 | dump_table_entry(table_entry *entry, |
| 310 | int indent) |
| 311 | { |
| 312 | printf("(table_entry*)%p\n", entry); |
| 313 | |
| 314 | if (entry != NULL) { |
| 315 | int field; |
| 316 | char sep; |
| 317 | |
| 318 | sep = ' '; |
| 319 | dumpf(indent, "(fields"); |
| 320 | for (field = 0; field < entry->nr_fields; field++) { |
| 321 | printf("%c%s", sep, entry->fields[field]); |
| 322 | sep = ':'; |
| 323 | } |
| 324 | printf(")\n"); |
| 325 | |
| 326 | dumpf(indent, "(line_nr %d)\n", entry->line_nr); |
| 327 | |
| 328 | dumpf(indent, "(file_name %s)\n", entry->file_name); |
| 329 | |
| 330 | dumpf(indent, "(annex\n%s\n", entry->annex); |
| 331 | dumpf(indent, " )\n"); |
| 332 | |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | |
| 337 | extern void |
| 338 | table_entry_print_cpp_line_nr(lf *file, |
| 339 | table_entry *entry) |
| 340 | { |
| 341 | lf_print__external_reference(file, entry->line_nr, entry->file_name); |
| 342 | } |
| 343 | |
| 344 | |