1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938
|
/*@z03.c:File Service:Declarations, no_fpos@******************************** */
/* */
/* THE LOUT DOCUMENT FORMATTING SYSTEM (VERSION 3.39) */
/* COPYRIGHT (C) 1991, 2008 Jeffrey H. Kingston */
/* */
/* Jeffrey H. Kingston (jeff@it.usyd.edu.au) */
/* School of Information Technologies */
/* The University of Sydney 2006 */
/* AUSTRALIA */
/* */
/* This program is free software; you can redistribute it and/or modify */
/* it under the terms of the GNU General Public License as published by */
/* the Free Software Foundation; either Version 3, or (at your option) */
/* any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA */
/* */
/* FILE: z03.c */
/* MODULE: File Service */
/* EXTERNS: InitFiles(), AddToPath(), DefineFile(), FirstFile(), */
/* NextFile(), FileNum(), FileName(), EchoFilePos(), */
/* PosOfFile(), OpenFile(), OpenIncGraphicFile() */
/* EchoFileFrom() */
/* */
/*****************************************************************************/
#include "externs.h"
#if USE_STAT
#include <sys/types.h>
#include <sys/stat.h>
#endif
#define INIT_TAB 3 /* initial file table size */
/*****************************************************************************/
/* */
/* FILE_TABLE */
/* */
/* A symbol table permitting access to file records by number or name. */
/* The table will automatically enlarge to accept any number of entries, */
/* but there is an arbitrary limit of 65535 files imposed so that file */
/* numbers can be stored in 16 bit fields. */
/* */
/* ftab_new(newsize) New empty table, newsize capacity */
/* ftab_insert(x, &S) Insert new file object x into S */
/* ftab_retrieve(str, S) Retrieve file object of name str */
/* ftab_num(S, num) Retrieve file object of number num */
/* ftab_debug(S, fp) Debug print of table S to file fp */
/* */
/*****************************************************************************/
typedef struct
{ int filetab_size; /* size of table */
int filetab_count; /* number of files in table */
struct filetab_rec
{ OBJECT by_number; /* file record by number */
OBJECT by_name_hash; /* file record by name hash */
} filetab[1];
} *FILE_TABLE;
#define ftab_size(S) (S)->filetab_size
#define ftab_count(S) (S)->filetab_count
#define ftab_num(S, i) (S)->filetab[i].by_number
#define ftab_name(S, i) (S)->filetab[i].by_name_hash
#define hash(pos, str, S) \
{ FULL_CHAR *p = str; \
pos = *p++; \
while( *p ) pos += *p++; \
pos = pos % ftab_size(S); \
}
static FILE_TABLE ftab_new(int newsize)
{ FILE_TABLE S; int i;
ifdebug(DMA, D, DebugRegisterUsage(MEM_FILES, 1,
2*sizeof(int) + newsize * sizeof(struct filetab_rec)));
S = (FILE_TABLE) malloc(2*sizeof(int) + newsize * sizeof(struct filetab_rec));
if( S == (FILE_TABLE) NULL )
Error(3, 1, "run out of memory when enlarging file table", FATAL, no_fpos);
ftab_size(S) = newsize;
ftab_count(S) = 0;
for( i = 0; i < newsize; i++ )
{ ftab_num(S, i) = ftab_name(S, i) = nilobj;
}
return S;
} /* end ftab_new */
static void ftab_insert(OBJECT x, FILE_TABLE *S);
static FILE_TABLE ftab_rehash(FILE_TABLE S, int newsize)
{ FILE_TABLE NewS; int i;
NewS = ftab_new(newsize);
for( i = 1; i <= ftab_count(S); i++ )
ftab_insert(ftab_num(S, i), &NewS);
for( i = 0; i < ftab_size(S); i++ )
{ if( ftab_name(S, i) != nilobj ) DisposeObject(ftab_name(S, i));
}
ifdebug(DMA, D, DebugRegisterUsage(MEM_FILES, -1,
-(2*sizeof(int) + ftab_size(S) * sizeof(struct filetab_rec))));
free(S);
return NewS;
} /* end ftab_rehash */
static void ftab_insert(OBJECT x, FILE_TABLE *S)
{ int pos, num;
if( ftab_count(*S) == ftab_size(*S) - 1 ) /* one less since 0 unused */
*S = ftab_rehash(*S, 2*ftab_size(*S));
num = ++ftab_count(*S);
if( num > MAX_FILES )
Error(3, 2, "too many files (maximum is %d)",
FATAL, &fpos(x), MAX_FILES);
hash(pos, string(x), *S);
if( ftab_name(*S, pos) == nilobj ) New(ftab_name(*S, pos), ACAT);
Link(ftab_name(*S, pos), x);
file_number(x) = num;
ftab_num(*S, num) = x;
} /* end ftab_insert */
static OBJECT ftab_retrieve(FULL_CHAR *str, FILE_TABLE S)
{ OBJECT x, link, y; int pos;
hash(pos, str, S);
x = ftab_name(S, pos);
if( x == nilobj ) return nilobj;
for( link = Down(x); link != x; link = NextDown(link) )
{ Child(y, link);
if( StringEqual(str, string(y)) ) return y;
}
return nilobj;
} /* end ftab_retrieve */
#if DEBUG_ON
static void ftab_debug(FILE_TABLE S)
{ int i; OBJECT x, link, y;
FULL_CHAR buff[MAX_BUFF];
debug2(DFS, D, " table size: %d; current number of files: %d",
ftab_size(S), ftab_count(S));
for( i = 0; i < ftab_size(S); i++ )
{ x = ftab_num(S, i);
debug2(DFS, D, " ftab_num(S, %d) = %s", i,
x == nilobj ? AsciiToFull("<nilobj>") :
!is_word(type(x)) ? AsciiToFull("not WORD!") : string(x) );
}
debug0(DFS, D, "");
for( i = 0; i < ftab_size(S); i++ )
{ x = ftab_name(S, i);
if( x == nilobj )
{
debug1(DFS, D, " ftab_name(S, %d) = <nilobj>", i);
}
else if( type(x) != ACAT )
{
debug1(DFS, D, " ftab_name(S, %d) = not ACAT!>", i);
}
else
{
StringCopy(buff, STR_EMPTY);
for( link = Down(x); link != x; link = NextDown(link) )
{ Child(y, link);
StringCat(buff, STR_SPACE);
StringCat(buff, is_word(type(y)) ? string(y):AsciiToFull("not-WORD!"));
}
debug2(DFS, D, " ftab_name(S, %d) =%s", i, buff);
}
}
} /* end ftab_debug */
static char *file_types[] /* the type names for debug */
= { "source", "include", "incgraphic", "database", "index",
"font", "prepend", "hyph", "hyphpacked",
"mapping", "filter" };
#endif
static OBJECT empty_path; /* file path with just "" in */
static FILE_TABLE file_tab; /* the file table */
static OBJECT file_type[MAX_TYPES]; /* files of each type */
static OBJECT file_path[MAX_PATHS]; /* the search paths */
/* ***don't need these any more
static char *file_mode[MAX_TYPES] =
{ READ_TEXT, READ_TEXT, READ_TEXT, READ_BINARY, READ_TEXT,
READ_TEXT, READ_TEXT, READ_BINARY, READ_TEXT, READ_TEXT };
*** */
/*****************************************************************************/
/* */
/* no_fpos */
/* */
/* A null file position value. */
/* */
/*****************************************************************************/
static FILE_POS no_file_pos = {0, 0, 0, 0, 0};
FILE_POS *no_fpos = &no_file_pos;
/*@::InitFiles(), AddToPath(), DefineFile()@**********************************/
/* */
/* InitFiles() */
/* */
/* Initialize this module. */
/* */
/*****************************************************************************/
void InitFiles(void)
{ int i; OBJECT tmp;
for( i = 0; i < MAX_TYPES; i++ ) New(file_type[i], ACAT);
for( i = 0; i < MAX_PATHS; i++ ) New(file_path[i], ACAT);
file_tab = ftab_new(INIT_TAB);
New(empty_path, ACAT);
tmp = MakeWord(WORD, STR_EMPTY, no_fpos);
Link(empty_path, tmp);
} /* end InitFiles */
/*****************************************************************************/
/* */
/* AddToPath(fpath, dirname) */
/* */
/* Add the directory dirname to the end of search path fpath. */
/* */
/*****************************************************************************/
void AddToPath(int fpath, OBJECT dirname)
{ Link(file_path[fpath], dirname);
} /* end AddToPath */
/*****************************************************************************/
/* */
/* FILE_NUM DefineFile(str, suffix, xfpos, ftype, fpath) */
/* */
/* Declare a file whose name is str plus suffix and whose fpos is xfpos. */
/* The file type is ftype, and its search path is fpath. */
/* */
/* If ignore_dup is TRUE, any repeated definition of the same file with */
/* the same type will be ignored. The result in that case will be the */
/* */
/*****************************************************************************/
FILE_NUM DefineFile(FULL_CHAR *str, FULL_CHAR *suffix,
FILE_POS *xfpos, int ftype, int fpath)
{ register int i;
OBJECT fname;
assert( ftype < MAX_TYPES, "DefineFile: ftype!" );
debug5(DFS, DD, "DefineFile(%s, %s,%s, %s, %d)",
str, suffix, EchoFilePos(xfpos), file_types[ftype], fpath);
if( ftype == SOURCE_FILE && (i = StringLength(str)) >= 3 )
{
/* check that file name does not end in ".li" or ".ld" */
if( StringEqual(&str[i-StringLength(DATA_SUFFIX)], DATA_SUFFIX) )
Error(3, 3, "database file %s where source file expected",
FATAL, xfpos, str);
if( StringEqual(&str[i-StringLength(INDEX_SUFFIX)], INDEX_SUFFIX) )
Error(3, 4, "database index file %s where source file expected",
FATAL, xfpos, str);
}
if( StringLength(str) + StringLength(suffix) >= MAX_WORD )
Error(3, 5, "file name %s%s is too long", FATAL, no_fpos, str, suffix);
fname = MakeWordTwo(WORD, str, suffix, xfpos);
Link(file_type[ftype], fname);
path(fname) = fpath;
updated(fname) = FALSE;
line_count(fname) = 0;
type_of_file(fname) = ftype;
used_suffix(fname) = FALSE;
ftab_insert(fname, &file_tab);
debug1(DFS, DD, "DefineFile returning %s", string(fname));
ifdebug(DFS, DD, ftab_debug(file_tab));
return file_number(fname);
} /* end DefineFile */
/*@::FirstFile(), NextFile(), FileNum()@**************************************/
/* */
/* FILE_NUM FirstFile(ftype) */
/* */
/* Returns first file of type ftype, else NO_FILE. */
/* */
/*****************************************************************************/
FILE_NUM FirstFile(int ftype)
{ FILE_NUM i;
OBJECT link, y;
debug1(DFS, DD, "FirstFile( %s )", file_types[ftype]);
link = Down(file_type[ftype]);
if( type(link) == ACAT ) i = NO_FILE;
else
{ Child(y, link);
i = file_number(y);
}
debug1(DFS, DD, "FirstFile returning %s", i==NO_FILE ? STR_NONE : FileName(i));
return i;
} /* end FirstFile */
/*****************************************************************************/
/* */
/* FILE_NUM NextFile(i) */
/* */
/* Returns the next file after file i of the type of i, else NO_FILE. */
/* */
/*****************************************************************************/
FILE_NUM NextFile(FILE_NUM i)
{ OBJECT link, y;
debug1(DFS, DD, "NextFile( %s )", FileName(i));
link = NextDown(Up(ftab_num(file_tab, i)));
if( type(link) == ACAT ) i = NO_FILE;
else
{ Child(y, link);
i = file_number(y);
}
debug1(DFS, DD, "NextFile returning %s", i==NO_FILE ? STR_NONE : FileName(i));
return i;
} /* end NextFile */
/*****************************************************************************/
/* */
/* FILE_NUM FileNum(str, suffix) */
/* */
/* Return the number of the file with name str plus suffix, else NO_FILE. */
/* */
/*****************************************************************************/
FILE_NUM FileNum(FULL_CHAR *str, FULL_CHAR *suffix)
{ register int i; OBJECT fname;
FULL_CHAR buff[MAX_BUFF];
debug2(DFS, DD, "FileNum(%s, %s)", str, suffix);
if( StringLength(str) + StringLength(suffix) >= MAX_BUFF )
Error(3, 6, "file name %s%s is too long", FATAL, no_fpos, str, suffix);
StringCopy(buff, str);
StringCat(buff, suffix);
fname = ftab_retrieve(buff, file_tab);
i = fname == nilobj ? NO_FILE : file_number(fname);
debug1(DFS, DD, "FileNum returning %s",
i == NO_FILE ? STR_NONE : FileName( (FILE_NUM) i));
return (FILE_NUM) i;
} /* end FileNum */
/*****************************************************************************/
/* */
/* FILE_NUM DatabaseFileNum(FILE_POS *xfpos) */
/* */
/* Return a suitable database file number for writing something out whose */
/* file position is xfpos. */
/* */
/*****************************************************************************/
FILE_NUM DatabaseFileNum(FILE_POS *xfpos)
{ OBJECT x;
FILE_NUM fnum; FULL_CHAR *str;
debug2(DFS, D, "DatabaseFileNum(%s %s)", EchoFilePos(xfpos),
EchoFileSource(file_num(*xfpos)));
x = ftab_num(file_tab, file_num(*xfpos));
switch( type_of_file(x) )
{
case SOURCE_FILE:
case INCLUDE_FILE:
/* return the corresponding database file (may need to be defined) */
str = FileName(file_num(*xfpos));
fnum = FileNum(str, DATA_SUFFIX);
if( fnum == NO_FILE )
{ debug0(DFS, DD, " calling DefineFile from DatabaseFileNum");
fnum = DefineFile(str, DATA_SUFFIX, xfpos, DATABASE_FILE, SOURCE_PATH);
}
break;
case DATABASE_FILE:
/* return the enclosing source file (recursively if necessary) */
if( file_num(fpos(x)) == NO_FILE )
{
/* xfpos lies in a cross-reference database file; use itself */
/* ***
Error(3, 18, "DatabaseFileNum: database file position unknown",
INTERN, no_fpos);
*** */
fnum = file_num(*xfpos);
}
else
{
/* xfpos lies in a user-defined database file; use its source */
fnum = DatabaseFileNum(&fpos(x));
}
break;
case FILTER_FILE:
/* return the enclosing source file (recursively if necessary) */
if( file_num(fpos(x)) == NO_FILE )
Error(3, 7, "DatabaseFileNum: filter file position unknown",
INTERN, no_fpos);
fnum = DatabaseFileNum(&fpos(x));
break;
default:
Error(3, 8, "DatabaseFileNum: unexpected file type", INTERN, no_fpos);
fnum = NO_FILE;
break;
}
debug2(DFS, D, "DatabaseFileNum returning %d (%s)", fnum,
fnum == NO_FILE ? AsciiToFull("NO_FILE") : FileName(fnum));
return fnum;
} /* end DatabaseFileNum */
/*@::FileName(), EchoFilePos(), PosOfFile()@**********************************/
/* */
/* FULL_CHAR *FileName(fnum) */
/* FULL_CHAR *FullFileName(fnum) */
/* */
/* Return the string name of this file. This is as given to DefineFile */
/* until OpenFile is called, after which it is the full path name. */
/* */
/* FullFileName is the same except it will add a .lt to the file name */
/* if that was needed when the file was opened for reading. */
/* */
/*****************************************************************************/
FULL_CHAR *FileName(FILE_NUM fnum)
{ OBJECT x;
x = ftab_num(file_tab, fnum);
assert( x != nilobj, "FileName: x == nilobj!" );
if( Down(x) != x ) Child(x, Down(x));
return string(x);
} /* end FileName */
FULL_CHAR *FullFileName(FILE_NUM fnum)
{ OBJECT x;
static FULL_CHAR ffbuff[2][MAX_BUFF];
static int ffbp = 1;
x = ftab_num(file_tab, fnum);
assert( x != nilobj, "FileName: x == nilobj!" );
if( used_suffix(x) )
{
if( Down(x) != x ) Child(x, Down(x));
ffbp = (ffbp + 1) % 2;
StringCopy(ffbuff[ffbp], string(x));
StringCat(ffbuff[ffbp], SOURCE_SUFFIX);
return ffbuff[ffbp];
}
else
{
if( Down(x) != x ) Child(x, Down(x));
return string(x);
}
} /* end FullFileName */
/*****************************************************************************/
/* */
/* int FileType(FILE_NUM fnum) */
/* */
/* Return the type of file fnum. */
/* */
/*****************************************************************************/
int FileType(FILE_NUM fnum)
{ OBJECT x;
x = ftab_num(file_tab, fnum);
assert( x != nilobj, "FileType: x == nilobj!" );
if( Down(x) != x ) Child(x, Down(x));
return type_of_file(x);
} /* end FileType */
/*****************************************************************************/
/* */
/* FULL_CHAR *EchoFilePos(pos) */
/* */
/* Returns a string reporting the value of file position pos. */
/* */
/*****************************************************************************/
static FULL_CHAR buff[2][MAX_BUFF]; static int bp = 1;
static void append_fpos(FILE_POS *pos)
{ OBJECT x;
x = ftab_num(file_tab, file_num(*pos));
assert( x != nilobj, "EchoFilePos: file_tab entry is nilobj!" );
if( file_num(fpos(x)) > 0 )
{ append_fpos( &fpos(x) );
if( StringLength(buff[bp]) + 2 >= MAX_BUFF )
Error(3, 9, "file position %s... is too long to print",
FATAL, no_fpos, buff[bp]);
StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], STR_DIR);
}
if( StringLength(buff[bp]) + StringLength(string(x)) + 13 >= MAX_BUFF )
Error(3, 10, "file position %s... is too long to print",
FATAL, no_fpos, buff[bp]);
StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], STR_QUOTE);
StringCat(buff[bp], string(x));
StringCat(buff[bp], STR_QUOTE);
if( line_num(*pos) != 0 )
{ StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], StringInt( (int) line_num(*pos)));
StringCat(buff[bp], AsciiToFull(","));
StringCat(buff[bp], StringInt( (int) col_num(*pos)));
}
} /* end append_fpos */
FULL_CHAR *EchoFilePos(FILE_POS *pos)
{ bp = (bp + 1) % 2;
StringCopy(buff[bp], STR_EMPTY);
if( file_num(*pos) > 0 ) append_fpos(pos);
return buff[bp];
} /* end EchoFilePos */
FULL_CHAR *EchoAltFilePos(FILE_POS *pos)
{
bp = (bp + 1) % 2;
StringCopy(buff[bp], STR_EMPTY);
if( file_num(*pos) > 0 )
{
/* *** x = ftab_num(file_tab, file_num(*pos)); *** */
StringCat(buff[bp], FullFileName(file_num(*pos)));
if( line_num(*pos) != 0 )
{ StringCat(buff[bp], AsciiToFull(":"));
StringCat(buff[bp], StringInt( (int) line_num(*pos)));
StringCat(buff[bp], AsciiToFull(":"));
StringCat(buff[bp], StringInt( (int) col_num(*pos)));
}
}
return buff[bp];
} /* end EchoFilePos */
/*@::EchoFileSource(), EchoFileLine(), PosOfFile()@***************************/
/* */
/* FULL_CHAR *EchoFileSource(fnum) */
/* */
/* Returns a string reporting the "file source" information for file fnum. */
/* */
/*****************************************************************************/
FULL_CHAR *EchoFileSource(FILE_NUM fnum)
{ OBJECT x, nextx;
bp = (bp + 1) % 2;
StringCopy(buff[bp], STR_EMPTY);
if( fnum > 0 )
{ StringCat(buff[bp], STR_SPACE);
x = ftab_num(file_tab, fnum);
assert( x != nilobj, "EchoFileSource: x == nilobj!" );
if( type_of_file(x) == FILTER_FILE )
{ StringCat(buff[bp], AsciiToFull(condcatgets(MsgCat, 3, 11, "filter")));
/* for estrip's benefit: Error(3, 11, "filter"); */
StringCat(buff[bp], STR_SPACE);
}
StringCat(buff[bp], AsciiToFull(condcatgets(MsgCat, 3, 12, "file")));
/* for estrip's benefit: Error(3, 12, "file"); */
StringCat(buff[bp], STR_SPACE);
/* *** x = ftab_num(file_tab, fnum); *** */
StringCat(buff[bp], STR_QUOTE);
StringCat(buff[bp], FullFileName(fnum));
StringCat(buff[bp], STR_QUOTE);
if( file_num(fpos(x)) > 0 )
{ StringCat(buff[bp], AsciiToFull(" ("));
for(;;)
{ nextx = ftab_num(file_tab, file_num(fpos(x)));
StringCat(buff[bp], AsciiToFull(condcatgets(MsgCat, 3, 13, "from")));
/* for estrip's benefit: Error(3, 13, "from"); */
StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], STR_QUOTE);
StringCat(buff[bp], string(nextx));
StringCat(buff[bp], STR_QUOTE);
StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], AsciiToFull(condcatgets(MsgCat, 3, 14, "line")));
/* for estrip's benefit: Error(3, 14, "line"); */
StringCat(buff[bp], STR_SPACE);
StringCat(buff[bp], StringInt( (int) line_num(fpos(x))));
if( file_num(fpos(nextx)) == 0 ) break;
StringCat(buff[bp], AsciiToFull(", "));
x = nextx;
}
StringCat(buff[bp], AsciiToFull(")"));
}
}
return buff[bp];
} /* end EchoFileSource */
/*****************************************************************************/
/* */
/* FULL_CHAR *EchoFileLine(pos) */
/* */
/* Returns a string reporting the "line source" information for pos. */
/* */
/*****************************************************************************/
FULL_CHAR *EchoFileLine(FILE_POS *pos)
{ bp = (bp + 1) % 2;
StringCopy(buff[bp], STR_EMPTY);
if( file_num(*pos) > 0 && line_num(*pos) != 0 )
{ StringCat(buff[bp], StringInt( (int) line_num(*pos)));
StringCat(buff[bp], AsciiToFull(","));
StringCat(buff[bp], StringInt( (int) col_num(*pos)));
}
return buff[bp];
} /* end EchoFileLIne */
/*****************************************************************************/
/* */
/* FILE_POS *PosOfFile(fnum) */
/* */
/* Returns a pointer to the file position where file fnum was encountered. */
/* */
/*****************************************************************************/
FILE_POS *PosOfFile(FILE_NUM fnum)
{ OBJECT x = ftab_num(file_tab, fnum);
assert( x != nilobj, "PosOfFile: file_tab entry is nilobj!" );
return &fpos(x);
}
/*@::SearchPath()@************************************************************/
/* */
/* static FILE *SearchPath(str, fpath, check_ld, check_lt, full_name, xfpos,*/
/* read_mode) */
/* */
/* Search the given path for a file whose name is str. If found, open */
/* it with mode read_mode; return the resulting FILE *. */
/* */
/* If check_ld is TRUE, it means that the file to be opened is a .li file */
/* and OpenFile() is required to check whether the corresponding .ld file */
/* is present. If it is, then the search must stop. Furthermore, if the */
/* .li file is out of date wrt the .ld file, it is to be removed. */
/* */
/* If check_lt is TRUE, it means that the file to be opened is a source */
/* file and OpenFile() is required to check for a .lt suffix version. */
/* */
/* Also return the full path name in object *full_name if different from */
/* the existing name, else nilobj. */
/* */
/* Set *used_source_suffix to TRUE if the .lt source suffix had to be */
/* added in order to find the file. */
/* */
/*****************************************************************************/
static FILE *SearchPath(FULL_CHAR *str, OBJECT fpath, BOOLEAN check_ld,
BOOLEAN check_lt, OBJECT *full_name, FILE_POS *xfpos, char *read_mode,
BOOLEAN *used_source_suffix)
{ FULL_CHAR buff[MAX_BUFF], buff2[MAX_BUFF];
OBJECT link, y = nilobj, cpath; FILE *fp, *fp2;
debug4(DFS, DD, "[ SearchPath(%s, %s, %s, %s, -)", str, EchoObject(fpath),
bool(check_ld), bool(check_lt));
*used_source_suffix = FALSE;
/* if file name is "stdin" just return it */
if( StringEqual(str, STR_STDIN) )
{
debug0(DFS, DD, "] SearchPath returning stdin");
*full_name = nilobj;
return stdin;
}
/* use fpath if relative file name, use empty_path if absolute filename */
cpath = StringBeginsWith(str, STR_DIR) ? empty_path : fpath;
/* try opening each path name in the search path */
fp = null;
for( link = Down(cpath); fp == null && link != cpath; link = NextDown(link) )
{ Child(y, link);
/* set buff to the full path name */
if( StringLength(string(y)) == 0 )
{ StringCopy(buff, str);
}
else
{ if( StringLength(string(y)) + StringLength(STR_DIR) +
StringLength(str) >= MAX_BUFF )
Error(3, 15, "file path name %s%s%s is too long",
FATAL, &fpos(y), string(y), STR_DIR, str);
StringCopy(buff, string(y));
StringCat(buff, STR_DIR);
StringCat(buff, str);
}
/* try opening the full path name */
fp = StringFOpen(buff, read_mode);
debug1(DFS, DD, fp == null ? " fail %s" : " succeed %s", buff);
/* if failed to find .li file, exit if corresponding .ld file */
if( check_ld && fp == null )
{
StringCopy(buff2, buff);
StringCopy(&buff2[StringLength(buff2) - StringLength(INDEX_SUFFIX)],
DATA_SUFFIX);
fp2 = StringFOpen(buff2, READ_FILE);
debug1(DFS, DD, fp2 == null ? " fail %s" : " succeed %s", buff2);
if( fp2 != null )
{ fclose(fp2);
debug0(DFS, DD, "] SearchPath returning null (adjacent .ld file)");
*full_name = nilobj;
return null;
}
}
#if USE_STAT
/*****************************************************************/
/* */
/* If your compiler won't compile this bit, it is probably */
/* because you either don't have the stat() system call on */
/* your system (it is not ANSI C), or because it can't be */
/* found in the header files declared at the top of this file. */
/* */
/* The simple correct thing to do is to set the USESTAT macro */
/* in the makefile to 0. You won't lose much. */
/* */
/*****************************************************************/
/* if found .li file, compare dates with corresponding .ld file */
if( check_ld && fp != null )
{
struct stat indexstat, datastat;
StringCopy(buff2, buff);
StringCopy(&buff2[StringLength(buff2) - StringLength(INDEX_SUFFIX)],
DATA_SUFFIX);
debug2(DFS, DD, "SearchPath comparing dates of .li %s and .ld %s",
buff, buff2);
if( stat( (char *) buff, &indexstat) == 0 &&
stat( (char *) buff2, &datastat) == 0 )
{
debug2(DFS, DD, "SearchPath mtimes are .li %d and .ld %d",
(int) indexstat.st_mtime, (int) datastat.st_mtime);
if( datastat.st_mtime > indexstat.st_mtime )
{ fclose(fp);
debug1(DFS, DD, "SearchPath calling StringRemove(%s)", buff);
StringRemove(buff);
debug0(DFS, DD, "] SearchPath returning null (.li out of date)");
*full_name = nilobj;
return null;
}
}
}
#endif
/* if check_lt, see if buff.lt exists as well as or instead of buff */
if( check_lt )
{
StringCopy(buff2, buff);
StringCat(buff2, SOURCE_SUFFIX);
fp2 = StringFOpen(buff2, READ_FILE);
debug1(DFS, DD, fp2 == null ? " fail %s" : " succeed %s", buff2);
if( fp2 != null )
{ if( fp != null )
Error(3, 16, "files %s and %s both exist", FATAL, xfpos,buff,buff2);
fp = fp2;
*used_source_suffix = TRUE;
}
}
}
debug1(DFS, DD, "] SearchPath returning (fp %s null)", fp==null ? "==" : "!=");
*full_name = (fp == null || StringLength(string(y)) == 0) ? nilobj :
MakeWord(WORD, buff, xfpos);
return fp;
} /* end SearchPath */
/*@::OpenFile(), OpenIncGraphicFile()@****************************************/
/* */
/* FILE *OpenFile(fnum, check_ld, check_lt) */
/* */
/* Open for reading the file whose number is fnum. This involves */
/* searching for it along its path if not previously opened. */
/* */
/* If check_ld is TRUE, it means that the file to be opened is a .li file */
/* and OpenFile() is required to check whether the corresponding .ld file */
/* is present. If it is, then the search must stop. Furthermore, if the */
/* .li file is out of date wrt the .ld file, it is to be removed. */
/* */
/* If check_lt is TRUE, it means that the file to be opened is a source */
/* file and OpenFile() is required to check for a .lt suffix version */
/* if the file does not open without it. */
/* */
/*****************************************************************************/
FILE *OpenFile(FILE_NUM fnum, BOOLEAN check_ld, BOOLEAN check_lt)
{ FILE *fp; OBJECT fname, full_name, y; BOOLEAN used_source_suffix;
ifdebug(DPP, D, ProfileOn("OpenFile"));
debug2(DFS, DD, "[ OpenFile(%s, %s)", FileName(fnum), bool(check_ld));
fname = ftab_num(file_tab, fnum);
if( Down(fname) != fname )
{ Child(y, Down(fname));
/* fp = StringFOpen(string(y), file_mode[type_of_file(fname)]); */
fp = StringFOpen(string(y), READ_FILE);
debug1(DFS,DD,fp==null ? " failed on %s" : " succeeded on %s", string(y));
}
else
{
/* ***
fp = SearchPath(string(fname), file_path[path(fname)], check_ld,
check_lt, &full_name, &fpos(fname), file_mode[type_of_file(fname)],
&used_source_suffix);
*** */
fp = SearchPath(string(fname), file_path[path(fname)], check_ld, check_lt,
&full_name, &fpos(fname), READ_FILE, &used_source_suffix);
if( full_name != nilobj ) Link(fname, full_name);
used_suffix(fname) = used_source_suffix;
}
ifdebug(DPP, D, ProfileOff("OpenFile"));
debug1(DFS, DD, "] OpenFile returning (fp %s null)", fp==null ? "==" : "!=");
return fp;
} /* end OpenFile */
/*****************************************************************************/
/* */
/* FILE *OpenIncGraphicFile(str, typ, full_name, xfpos, compressed) */
/* */
/* Open for reading the @IncludeGraphic file str; typ is INCGRAPHIC or */
/* SINCGRAPHIC; xfpos is the file position of the file name. */
/* */
/* Return the full name in full_name. Set compressed to TRUE if the file */
/* was a compressed file. */
/* */
/*****************************************************************************/
#define MAX_COMPRESSED 6
static char *compress_suffixes[MAX_COMPRESSED]
= { ".gz", "-gz", ".z", "-z", "_z", ".Z" };
FILE *OpenIncGraphicFile(FULL_CHAR *str, unsigned char typ,
OBJECT *full_name, FILE_POS *xfpos, BOOLEAN *compressed)
{ FILE *fp; int p, i; BOOLEAN used_source_suffix;
debug2(DFS, DD, "OpenIncGraphicFile(%s, %s, -)", str, Image(typ));
assert( typ == INCGRAPHIC || typ == SINCGRAPHIC, "OpenIncGraphicFile!" );
p = (typ == INCGRAPHIC ? INCLUDE_PATH : SYSINCLUDE_PATH);
fp = SearchPath(str, file_path[p], FALSE, FALSE, full_name, xfpos,
READ_FILE, &used_source_suffix);
if( *full_name == nilobj ) *full_name = MakeWord(WORD, str, xfpos);
if( fp == null )
{
/* if file didn't open, nothing more to do */
*compressed = FALSE;
fp = null;
}
else
{
/* if file is compressed, uncompress it into file LOUT_EPS */
for( i = 0; i < MAX_COMPRESSED; i++ )
{ if( StringEndsWith(string(*full_name), AsciiToFull(compress_suffixes[i])) )
break;
}
if( i < MAX_COMPRESSED )
{ char buff[MAX_BUFF];
fclose(fp);
sprintf(buff, UNCOMPRESS_COM, (char *) string(*full_name), LOUT_EPS);
if( SafeExecution )
{
Error(3, 17, "safe execution prohibiting command: %s", WARN, xfpos,buff);
*compressed = FALSE;
fp = null;
}
else
{
system(buff);
fp = fopen(LOUT_EPS, READ_FILE);
*compressed = TRUE;
}
}
else *compressed = FALSE;
}
debug2(DFS, DD, "OpenIncGraphicFile returning (fp %s null, *full_name = %s)",
fp==null ? "==" : "!=", string(*full_name));
return fp;
} /* end OpenIncGraphicFile */
/*****************************************************************************/
/* */
/* FileSetUpdated(fnum, newlines) */
/* */
/* Declare that file fnum has been updated, and that it now contains */
/* newlines lines. */
/* */
/*****************************************************************************/
void FileSetUpdated(FILE_NUM fnum, int newlines)
{
debug2(DFS, DD, "FileSetUpdated(%s, %d)", FileName(fnum), newlines);
updated(ftab_num(file_tab, fnum)) = TRUE;
line_count(ftab_num(file_tab, fnum)) = newlines;
debug0(DFS, DD, "FileSetUpdated returning");
} /* end FileSetUpdated */
/*****************************************************************************/
/* */
/* int FileGetLineCount(FILE_NUM fnum) */
/* */
/* Return the number of lines so far written to file fnum. */
/* */
/*****************************************************************************/
int FileGetLineCount(FILE_NUM fnum)
{ int res;
debug1(DFS, DD, "FileGetLineCount(%s)", FileName(fnum));
res = line_count(ftab_num(file_tab, fnum));
debug1(DFS, DD, "FileGetLineCount returning %d", res);
return res;
} /* end FileGetLineCount */
/*****************************************************************************/
/* */
/* BOOLEAN FileTestUpdated(fnum) */
/* */
/* Test whether file fnum has been declared to be updated. */
/* */
/*****************************************************************************/
BOOLEAN FileTestUpdated(FILE_NUM fnum)
{ return (BOOLEAN) updated(ftab_num(file_tab, fnum));
} /* end FileTestUpdated */
|