doc/help/api-filedir.html

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 354 <div class='body'>
 355 <!--
 356   File and Directory API header for CUPS.
 357
 358   Copyright 2008-2011 by Apple Inc.
 359
 360   These coded instructions, statements, and computer programs are the
 361   property of Apple Inc. and are protected by Federal copyright
 362   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
 363   which should have been included with this file.  If this file is
 364   file is missing or damaged, see the license at "http://www.cups.org/".
 365 -->
 366
 367 <h1 class='title'>File and Directory APIs</h1>
 368
 369 <div class='summary'><table summary='General Information'>
 370 <thead>
 371 <tr>
 372         <th>Headers</th>
 373         <th>cups/file.h<br>
 374         cups/dir.h</th>
 375 </tr>
 376 </thead>
 377 <tbody>
 378 <tr>
 379         <th>Library</th>
 380         <td>-lcups</td>
 381 </tr>
 382 <tr>
 383         <th>See Also</th>
 384         <td>Programming: <a href='api-overview.html' target='_top'>Introduction to CUPS Programming</a><br>
 385         Programming: <a href='api-cups.html' target='_top'>CUPS API</a></td>
 386 </tr>
 387 </tbody>
 388 </table></div>
 389 <h2 class="title">Contents</h2>
 390 <ul class="contents">
 391 <li><a href="#OVERVIEW">Overview</a></li>
 392 <li><a href="#FUNCTIONS">Functions</a><ul class="code">
 393         <li><a href="#cupsDirClose" title="Close a directory.">cupsDirClose</a></li>
 394         <li><a href="#cupsDirOpen" title="Open a directory.">cupsDirOpen</a></li>
 395         <li><a href="#cupsDirRead" title="Read the next directory entry.">cupsDirRead</a></li>
 396         <li><a href="#cupsDirRewind" title="Rewind to the start of the directory.">cupsDirRewind</a></li>
 397         <li><a href="#cupsFileClose" title="Close a CUPS file.">cupsFileClose</a></li>
 398         <li><a href="#cupsFileCompression" title="Return whether a file is compressed.">cupsFileCompression</a></li>
 399         <li><a href="#cupsFileEOF" title="Return the end-of-file status.">cupsFileEOF</a></li>
 400         <li><a href="#cupsFileFind" title="Find a file using the specified path.">cupsFileFind</a></li>
 401         <li><a href="#cupsFileFlush" title="Flush pending output.">cupsFileFlush</a></li>
 402         <li><a href="#cupsFileGetChar" title="Get a single character from a file.">cupsFileGetChar</a></li>
 403         <li><a href="#cupsFileGetConf" title="Get a line from a configuration file.">cupsFileGetConf</a></li>
 404         <li><a href="#cupsFileGetLine" title="Get a CR and/or LF-terminated line that may
 405 contain binary data.">cupsFileGetLine</a></li>
 406         <li><a href="#cupsFileGets" title="Get a CR and/or LF-terminated line.">cupsFileGets</a></li>
 407         <li><a href="#cupsFileLock" title="Temporarily lock access to a file.">cupsFileLock</a></li>
 408         <li><a href="#cupsFileNumber" title="Return the file descriptor associated with a CUPS file.">cupsFileNumber</a></li>
 409         <li><a href="#cupsFileOpen" title="Open a CUPS file.">cupsFileOpen</a></li>
 410         <li><a href="#cupsFileOpenFd" title="Open a CUPS file using a file descriptor.">cupsFileOpenFd</a></li>
 411         <li><a href="#cupsFilePeekChar" title="Peek at the next character from a file.">cupsFilePeekChar</a></li>
 412         <li><a href="#cupsFilePrintf" title="Write a formatted string.">cupsFilePrintf</a></li>
 413         <li><a href="#cupsFilePutChar" title="Write a character.">cupsFilePutChar</a></li>
 414         <li><a href="#cupsFilePutConf" title="Write a configuration line.">cupsFilePutConf</a></li>
 415         <li><a href="#cupsFilePuts" title="Write a string.">cupsFilePuts</a></li>
 416         <li><a href="#cupsFileRead" title="Read from a file.">cupsFileRead</a></li>
 417         <li><a href="#cupsFileRewind" title="Set the current file position to the beginning of the
 418 file.">cupsFileRewind</a></li>
 419         <li><a href="#cupsFileSeek" title="Seek in a file.">cupsFileSeek</a></li>
 420         <li><a href="#cupsFileStderr" title="Return a CUPS file associated with stderr.">cupsFileStderr</a></li>
 421         <li><a href="#cupsFileStdin" title="Return a CUPS file associated with stdin.">cupsFileStdin</a></li>
 422         <li><a href="#cupsFileStdout" title="Return a CUPS file associated with stdout.">cupsFileStdout</a></li>
 423         <li><a href="#cupsFileTell" title="Return the current file position.">cupsFileTell</a></li>
 424         <li><a href="#cupsFileUnlock" title="Unlock access to a file.">cupsFileUnlock</a></li>
 425         <li><a href="#cupsFileWrite" title="Write to a file.">cupsFileWrite</a></li>
 426 </ul></li>
 427 <li><a href="#TYPES">Data Types</a><ul class="code">
 428         <li><a href="#cups_dentry_t" title="Directory entry type">cups_dentry_t</a></li>
 429         <li><a href="#cups_dir_t" title="Directory type">cups_dir_t</a></li>
 430         <li><a href="#cups_file_t" title="CUPS file type">cups_file_t</a></li>
 431 </ul></li>
 432 <li><a href="#STRUCTURES">Structures</a><ul class="code">
 433         <li><a href="#cups_dentry_s" title="Directory entry type">cups_dentry_s</a></li>
 434 </ul></li>
 435 </ul>
 436 <!--
 437   File and directory API introduction for CUPS.
 438
 439   Copyright 2007-2011 by Apple Inc.
 440   Copyright 1997-2005 by Easy Software Products, all rights reserved.
 441
 442   These coded instructions, statements, and computer programs are the
 443   property of Apple Inc. and are protected by Federal copyright
 444   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
 445   which should have been included with this file.  If this file is
 446   file is missing or damaged, see the license at "http://www.cups.org/".
 447 -->
 448
 449 <h2 class='title'><a name="OVERVIEW">Overview</a></h2>
 450
 451 <p>The CUPS file and directory APIs provide portable interfaces
 452 for manipulating files and listing files and directories. Unlike
 453 stdio <code>FILE</code> streams, the <code>cupsFile</code> functions
 454 allow you to open more than 256 files at any given time. They
 455 also manage the platform-specific details of locking, large file
 456 support, line endings (CR, LF, or CR LF), and reading and writing
 457 files using Flate ("gzip") compression. Finally, you can also
 458 connect, read from, and write to network connections using the
 459 <code>cupsFile</code> functions.</p>
 460
 461 <p>The <code>cupsDir</code> functions manage the platform-specific
 462 details of directory access/listing and provide a convenient way
 463 to get both a list of files and the information (permissions,
 464 size, timestamp, etc.) for each of those files.</p>
 465 <h2 class="title"><a name="FUNCTIONS">Functions</a></h2>
 466 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsDirClose">cupsDirClose</a></h3>
 467 <p class="description">Close a directory.</p>
 468 <p class="code">
 469 void cupsDirClose (<br>
 470 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_dir_t">cups_dir_t</a> *dp<br>
 471 );</p>
 472 <h4 class="parameters">Parameters</h4>
 473 <dl>
 474 <dt>dp</dt>
 475 <dd class="description">Directory pointer</dd>
 476 </dl>
 477 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsDirOpen">cupsDirOpen</a></h3>
 478 <p class="description">Open a directory.</p>
 479 <p class="code">
 480 <a href="#cups_dir_t">cups_dir_t</a> *cupsDirOpen (<br>
 481 &nbsp;&nbsp;&nbsp;&nbsp;const char *directory<br>
 482 );</p>
 483 <h4 class="parameters">Parameters</h4>
 484 <dl>
 485 <dt>directory</dt>
 486 <dd class="description">Directory name</dd>
 487 </dl>
 488 <h4 class="returnvalue">Return Value</h4>
 489 <p class="description">Directory pointer or <code>NULL</code> if the directory could not be opened.</p>
 490 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsDirRead">cupsDirRead</a></h3>
 491 <p class="description">Read the next directory entry.</p>
 492 <p class="code">
 493 <a href="#cups_dentry_t">cups_dentry_t</a> *cupsDirRead (<br>
 494 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_dir_t">cups_dir_t</a> *dp<br>
 495 );</p>
 496 <h4 class="parameters">Parameters</h4>
 497 <dl>
 498 <dt>dp</dt>
 499 <dd class="description">Directory pointer</dd>
 500 </dl>
 501 <h4 class="returnvalue">Return Value</h4>
 502 <p class="description">Directory entry or <code>NULL</code> when there are no more</p>
 503 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsDirRewind">cupsDirRewind</a></h3>
 504 <p class="description">Rewind to the start of the directory.</p>
 505 <p class="code">
 506 void cupsDirRewind (<br>
 507 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_dir_t">cups_dir_t</a> *dp<br>
 508 );</p>
 509 <h4 class="parameters">Parameters</h4>
 510 <dl>
 511 <dt>dp</dt>
 512 <dd class="description">Directory pointer</dd>
 513 </dl>
 514 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileClose">cupsFileClose</a></h3>
 515 <p class="description">Close a CUPS file.</p>
 516 <p class="code">
 517 int cupsFileClose (<br>
 518 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 519 );</p>
 520 <h4 class="parameters">Parameters</h4>
 521 <dl>
 522 <dt>fp</dt>
 523 <dd class="description">CUPS file</dd>
 524 </dl>
 525 <h4 class="returnvalue">Return Value</h4>
 526 <p class="description">0 on success, -1 on error</p>
 527 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileCompression">cupsFileCompression</a></h3>
 528 <p class="description">Return whether a file is compressed.</p>
 529 <p class="code">
 530 int cupsFileCompression (<br>
 531 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 532 );</p>
 533 <h4 class="parameters">Parameters</h4>
 534 <dl>
 535 <dt>fp</dt>
 536 <dd class="description">CUPS file</dd>
 537 </dl>
 538 <h4 class="returnvalue">Return Value</h4>
 539 <p class="description"><code>CUPS_FILE_NONE</code> or <code>CUPS_FILE_GZIP</code></p>
 540 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileEOF">cupsFileEOF</a></h3>
 541 <p class="description">Return the end-of-file status.</p>
 542 <p class="code">
 543 int cupsFileEOF (<br>
 544 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 545 );</p>
 546 <h4 class="parameters">Parameters</h4>
 547 <dl>
 548 <dt>fp</dt>
 549 <dd class="description">CUPS file</dd>
 550 </dl>
 551 <h4 class="returnvalue">Return Value</h4>
 552 <p class="description">1 on end of file, 0 otherwise</p>
 553 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileFind">cupsFileFind</a></h3>
 554 <p class="description">Find a file using the specified path.</p>
 555 <p class="code">
 556 const char *cupsFileFind (<br>
 557 &nbsp;&nbsp;&nbsp;&nbsp;const char *filename,<br>
 558 &nbsp;&nbsp;&nbsp;&nbsp;const char *path,<br>
 559 &nbsp;&nbsp;&nbsp;&nbsp;int executable,<br>
 560 &nbsp;&nbsp;&nbsp;&nbsp;char *buffer,<br>
 561 &nbsp;&nbsp;&nbsp;&nbsp;int bufsize<br>
 562 );</p>
 563 <h4 class="parameters">Parameters</h4>
 564 <dl>
 565 <dt>filename</dt>
 566 <dd class="description">File to find</dd>
 567 <dt>path</dt>
 568 <dd class="description">Colon/semicolon-separated path</dd>
 569 <dt>executable</dt>
 570 <dd class="description">1 = executable files, 0 = any file/dir</dd>
 571 <dt>buffer</dt>
 572 <dd class="description">Filename buffer</dd>
 573 <dt>bufsize</dt>
 574 <dd class="description">Size of filename buffer</dd>
 575 </dl>
 576 <h4 class="returnvalue">Return Value</h4>
 577 <p class="description">Full path to file or <code>NULL</code> if not found</p>
 578 <h4 class="discussion">Discussion</h4>
 579 <p class="discussion">This function allows the paths in the path string to be separated by
 580 colons (UNIX standard) or semicolons (Windows standard) and stores the
 581 result in the buffer supplied.  If the file cannot be found in any of
 582 the supplied paths, <code>NULL</code> is returned. A <code>NULL</code> path only
 583 matches the current directory.
 584
 585 </p>
 586 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileFlush">cupsFileFlush</a></h3>
 587 <p class="description">Flush pending output.</p>
 588 <p class="code">
 589 int cupsFileFlush (<br>
 590 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 591 );</p>
 592 <h4 class="parameters">Parameters</h4>
 593 <dl>
 594 <dt>fp</dt>
 595 <dd class="description">CUPS file</dd>
 596 </dl>
 597 <h4 class="returnvalue">Return Value</h4>
 598 <p class="description">0 on success, -1 on error</p>
 599 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileGetChar">cupsFileGetChar</a></h3>
 600 <p class="description">Get a single character from a file.</p>
 601 <p class="code">
 602 int cupsFileGetChar (<br>
 603 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 604 );</p>
 605 <h4 class="parameters">Parameters</h4>
 606 <dl>
 607 <dt>fp</dt>
 608 <dd class="description">CUPS file</dd>
 609 </dl>
 610 <h4 class="returnvalue">Return Value</h4>
 611 <p class="description">Character or -1 on end of file</p>
 612 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileGetConf">cupsFileGetConf</a></h3>
 613 <p class="description">Get a line from a configuration file.</p>
 614 <p class="code">
 615 char *cupsFileGetConf (<br>
 616 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 617 &nbsp;&nbsp;&nbsp;&nbsp;char *buf,<br>
 618 &nbsp;&nbsp;&nbsp;&nbsp;size_t buflen,<br>
 619 &nbsp;&nbsp;&nbsp;&nbsp;char **value,<br>
 620 &nbsp;&nbsp;&nbsp;&nbsp;int *linenum<br>
 621 );</p>
 622 <h4 class="parameters">Parameters</h4>
 623 <dl>
 624 <dt>fp</dt>
 625 <dd class="description">CUPS file</dd>
 626 <dt>buf</dt>
 627 <dd class="description">String buffer</dd>
 628 <dt>buflen</dt>
 629 <dd class="description">Size of string buffer</dd>
 630 <dt>value</dt>
 631 <dd class="description">Pointer to value</dd>
 632 <dt>linenum</dt>
 633 <dd class="description">Current line number</dd>
 634 </dl>
 635 <h4 class="returnvalue">Return Value</h4>
 636 <p class="description">Line read or <code>NULL</code> on end of file or error</p>
 637 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileGetLine">cupsFileGetLine</a></h3>
 638 <p class="description">Get a CR and/or LF-terminated line that may
 639 contain binary data.</p>
 640 <p class="code">
 641 size_t cupsFileGetLine (<br>
 642 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 643 &nbsp;&nbsp;&nbsp;&nbsp;char *buf,<br>
 644 &nbsp;&nbsp;&nbsp;&nbsp;size_t buflen<br>
 645 );</p>
 646 <h4 class="parameters">Parameters</h4>
 647 <dl>
 648 <dt>fp</dt>
 649 <dd class="description">File to read from</dd>
 650 <dt>buf</dt>
 651 <dd class="description">Buffer</dd>
 652 <dt>buflen</dt>
 653 <dd class="description">Size of buffer</dd>
 654 </dl>
 655 <h4 class="returnvalue">Return Value</h4>
 656 <p class="description">Number of bytes on line or 0 on end of file</p>
 657 <h4 class="discussion">Discussion</h4>
 658 <p class="discussion">This function differs from <a href="#cupsFileGets"><code>cupsFileGets</code></a> in that the trailing CR
 659 and LF are preserved, as is any binary data on the line. The buffer is
 660 nul-terminated, however you should use the returned length to determine
 661 the number of bytes on the line.
 662
 663 </p>
 664 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileGets">cupsFileGets</a></h3>
 665 <p class="description">Get a CR and/or LF-terminated line.</p>
 666 <p class="code">
 667 char *cupsFileGets (<br>
 668 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 669 &nbsp;&nbsp;&nbsp;&nbsp;char *buf,<br>
 670 &nbsp;&nbsp;&nbsp;&nbsp;size_t buflen<br>
 671 );</p>
 672 <h4 class="parameters">Parameters</h4>
 673 <dl>
 674 <dt>fp</dt>
 675 <dd class="description">CUPS file</dd>
 676 <dt>buf</dt>
 677 <dd class="description">String buffer</dd>
 678 <dt>buflen</dt>
 679 <dd class="description">Size of string buffer</dd>
 680 </dl>
 681 <h4 class="returnvalue">Return Value</h4>
 682 <p class="description">Line read or <code>NULL</code> on end of file or error</p>
 683 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileLock">cupsFileLock</a></h3>
 684 <p class="description">Temporarily lock access to a file.</p>
 685 <p class="code">
 686 int cupsFileLock (<br>
 687 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 688 &nbsp;&nbsp;&nbsp;&nbsp;int block<br>
 689 );</p>
 690 <h4 class="parameters">Parameters</h4>
 691 <dl>
 692 <dt>fp</dt>
 693 <dd class="description">CUPS file</dd>
 694 <dt>block</dt>
 695 <dd class="description">1 to wait for the lock, 0 to fail right away</dd>
 696 </dl>
 697 <h4 class="returnvalue">Return Value</h4>
 698 <p class="description">0 on success, -1 on error</p>
 699 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileNumber">cupsFileNumber</a></h3>
 700 <p class="description">Return the file descriptor associated with a CUPS file.</p>
 701 <p class="code">
 702 int cupsFileNumber (<br>
 703 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 704 );</p>
 705 <h4 class="parameters">Parameters</h4>
 706 <dl>
 707 <dt>fp</dt>
 708 <dd class="description">CUPS file</dd>
 709 </dl>
 710 <h4 class="returnvalue">Return Value</h4>
 711 <p class="description">File descriptor</p>
 712 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileOpen">cupsFileOpen</a></h3>
 713 <p class="description">Open a CUPS file.</p>
 714 <p class="code">
 715 <a href="#cups_file_t">cups_file_t</a> *cupsFileOpen (<br>
 716 &nbsp;&nbsp;&nbsp;&nbsp;const char *filename,<br>
 717 &nbsp;&nbsp;&nbsp;&nbsp;const char *mode<br>
 718 );</p>
 719 <h4 class="parameters">Parameters</h4>
 720 <dl>
 721 <dt>filename</dt>
 722 <dd class="description">Name of file</dd>
 723 <dt>mode</dt>
 724 <dd class="description">Open mode</dd>
 725 </dl>
 726 <h4 class="returnvalue">Return Value</h4>
 727 <p class="description">CUPS file or <code>NULL</code> if the file or socket cannot be opened</p>
 728 <h4 class="discussion">Discussion</h4>
 729 <p class="discussion">The &quot;mode&quot; parameter can be &quot;r&quot; to read, &quot;w&quot; to write, overwriting any
 730 existing file, &quot;a&quot; to append to an existing file or create a new file,
 731 or &quot;s&quot; to open a socket connection.<br>
 732 <br>
 733 When opening for writing (&quot;w&quot;), an optional number from 1 to 9 can be
 734 supplied which enables Flate compression of the file.  Compression is
 735 not supported for the &quot;a&quot; (append) mode.<br>
 736 <br>
 737 When opening a socket connection, the filename is a string of the form
 738 &quot;address:port&quot; or &quot;hostname:port&quot;. The socket will make an IPv4 or IPv6
 739 connection as needed, generally preferring IPv6 connections when there is
 740 a choice.
 741
 742 </p>
 743 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileOpenFd">cupsFileOpenFd</a></h3>
 744 <p class="description">Open a CUPS file using a file descriptor.</p>
 745 <p class="code">
 746 <a href="#cups_file_t">cups_file_t</a> *cupsFileOpenFd (<br>
 747 &nbsp;&nbsp;&nbsp;&nbsp;int fd,<br>
 748 &nbsp;&nbsp;&nbsp;&nbsp;const char *mode<br>
 749 );</p>
 750 <h4 class="parameters">Parameters</h4>
 751 <dl>
 752 <dt>fd</dt>
 753 <dd class="description">File descriptor</dd>
 754 <dt>mode</dt>
 755 <dd class="description">Open mode</dd>
 756 </dl>
 757 <h4 class="returnvalue">Return Value</h4>
 758 <p class="description">CUPS file or <code>NULL</code> if the file could not be opened</p>
 759 <h4 class="discussion">Discussion</h4>
 760 <p class="discussion">The &quot;mode&quot; parameter can be &quot;r&quot; to read, &quot;w&quot; to write, &quot;a&quot; to append,
 761 or &quot;s&quot; to treat the file descriptor as a bidirectional socket connection.<br>
 762 <br>
 763 When opening for writing (&quot;w&quot;), an optional number from 1 to 9 can be
 764 supplied which enables Flate compression of the file.  Compression is
 765 not supported for the &quot;a&quot; (append) mode.
 766
 767 </p>
 768 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFilePeekChar">cupsFilePeekChar</a></h3>
 769 <p class="description">Peek at the next character from a file.</p>
 770 <p class="code">
 771 int cupsFilePeekChar (<br>
 772 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 773 );</p>
 774 <h4 class="parameters">Parameters</h4>
 775 <dl>
 776 <dt>fp</dt>
 777 <dd class="description">CUPS file</dd>
 778 </dl>
 779 <h4 class="returnvalue">Return Value</h4>
 780 <p class="description">Character or -1 on end of file</p>
 781 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFilePrintf">cupsFilePrintf</a></h3>
 782 <p class="description">Write a formatted string.</p>
 783 <p class="code">
 784 int cupsFilePrintf (<br>
 785 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 786 &nbsp;&nbsp;&nbsp;&nbsp;const char *format,<br>
 787 &nbsp;&nbsp;&nbsp;&nbsp;...<br>
 788 );</p>
 789 <h4 class="parameters">Parameters</h4>
 790 <dl>
 791 <dt>fp</dt>
 792 <dd class="description">CUPS file</dd>
 793 <dt>format</dt>
 794 <dd class="description">Printf-style format string</dd>
 795 <dt>...</dt>
 796 <dd class="description">Additional args as necessary</dd>
 797 </dl>
 798 <h4 class="returnvalue">Return Value</h4>
 799 <p class="description">Number of bytes written or -1 on error</p>
 800 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFilePutChar">cupsFilePutChar</a></h3>
 801 <p class="description">Write a character.</p>
 802 <p class="code">
 803 int cupsFilePutChar (<br>
 804 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 805 &nbsp;&nbsp;&nbsp;&nbsp;int c<br>
 806 );</p>
 807 <h4 class="parameters">Parameters</h4>
 808 <dl>
 809 <dt>fp</dt>
 810 <dd class="description">CUPS file</dd>
 811 <dt>c</dt>
 812 <dd class="description">Character to write</dd>
 813 </dl>
 814 <h4 class="returnvalue">Return Value</h4>
 815 <p class="description">0 on success, -1 on error</p>
 816 <h3 class="function"><span class="info">&nbsp;CUPS 1.4/OS X 10.6&nbsp;</span><a name="cupsFilePutConf">cupsFilePutConf</a></h3>
 817 <p class="description">Write a configuration line.</p>
 818 <p class="code">
 819 ssize_t cupsFilePutConf (<br>
 820 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 821 &nbsp;&nbsp;&nbsp;&nbsp;const char *directive,<br>
 822 &nbsp;&nbsp;&nbsp;&nbsp;const char *value<br>
 823 );</p>
 824 <h4 class="parameters">Parameters</h4>
 825 <dl>
 826 <dt>fp</dt>
 827 <dd class="description">CUPS file</dd>
 828 <dt>directive</dt>
 829 <dd class="description">Directive</dd>
 830 <dt>value</dt>
 831 <dd class="description">Value</dd>
 832 </dl>
 833 <h4 class="returnvalue">Return Value</h4>
 834 <p class="description">Number of bytes written or -1 on error</p>
 835 <h4 class="discussion">Discussion</h4>
 836 <p class="discussion">This function handles any comment escaping of the value.
 837
 838 </p>
 839 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFilePuts">cupsFilePuts</a></h3>
 840 <p class="description">Write a string.</p>
 841 <p class="code">
 842 int cupsFilePuts (<br>
 843 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 844 &nbsp;&nbsp;&nbsp;&nbsp;const char *s<br>
 845 );</p>
 846 <h4 class="parameters">Parameters</h4>
 847 <dl>
 848 <dt>fp</dt>
 849 <dd class="description">CUPS file</dd>
 850 <dt>s</dt>
 851 <dd class="description">String to write</dd>
 852 </dl>
 853 <h4 class="returnvalue">Return Value</h4>
 854 <p class="description">Number of bytes written or -1 on error</p>
 855 <h4 class="discussion">Discussion</h4>
 856 <p class="discussion">Like the <code>fputs</code> function, no newline is appended to the string.
 857
 858 </p>
 859 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileRead">cupsFileRead</a></h3>
 860 <p class="description">Read from a file.</p>
 861 <p class="code">
 862 ssize_t cupsFileRead (<br>
 863 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 864 &nbsp;&nbsp;&nbsp;&nbsp;char *buf,<br>
 865 &nbsp;&nbsp;&nbsp;&nbsp;size_t bytes<br>
 866 );</p>
 867 <h4 class="parameters">Parameters</h4>
 868 <dl>
 869 <dt>fp</dt>
 870 <dd class="description">CUPS file</dd>
 871 <dt>buf</dt>
 872 <dd class="description">Buffer</dd>
 873 <dt>bytes</dt>
 874 <dd class="description">Number of bytes to read</dd>
 875 </dl>
 876 <h4 class="returnvalue">Return Value</h4>
 877 <p class="description">Number of bytes read or -1 on error</p>
 878 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileRewind">cupsFileRewind</a></h3>
 879 <p class="description">Set the current file position to the beginning of the
 880 file.</p>
 881 <p class="code">
 882 off_t cupsFileRewind (<br>
 883 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 884 );</p>
 885 <h4 class="parameters">Parameters</h4>
 886 <dl>
 887 <dt>fp</dt>
 888 <dd class="description">CUPS file</dd>
 889 </dl>
 890 <h4 class="returnvalue">Return Value</h4>
 891 <p class="description">New file position or -1 on error</p>
 892 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileSeek">cupsFileSeek</a></h3>
 893 <p class="description">Seek in a file.</p>
 894 <p class="code">
 895 off_t cupsFileSeek (<br>
 896 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 897 &nbsp;&nbsp;&nbsp;&nbsp;off_t pos<br>
 898 );</p>
 899 <h4 class="parameters">Parameters</h4>
 900 <dl>
 901 <dt>fp</dt>
 902 <dd class="description">CUPS file</dd>
 903 <dt>pos</dt>
 904 <dd class="description">Position in file</dd>
 905 </dl>
 906 <h4 class="returnvalue">Return Value</h4>
 907 <p class="description">New file position or -1 on error</p>
 908 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileStderr">cupsFileStderr</a></h3>
 909 <p class="description">Return a CUPS file associated with stderr.</p>
 910 <p class="code">
 911 <a href="#cups_file_t">cups_file_t</a> *cupsFileStderr (void);</p>
 912 <h4 class="returnvalue">Return Value</h4>
 913 <p class="description">CUPS file</p>
 914 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileStdin">cupsFileStdin</a></h3>
 915 <p class="description">Return a CUPS file associated with stdin.</p>
 916 <p class="code">
 917 <a href="#cups_file_t">cups_file_t</a> *cupsFileStdin (void);</p>
 918 <h4 class="returnvalue">Return Value</h4>
 919 <p class="description">CUPS file</p>
 920 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileStdout">cupsFileStdout</a></h3>
 921 <p class="description">Return a CUPS file associated with stdout.</p>
 922 <p class="code">
 923 <a href="#cups_file_t">cups_file_t</a> *cupsFileStdout (void);</p>
 924 <h4 class="returnvalue">Return Value</h4>
 925 <p class="description">CUPS file</p>
 926 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileTell">cupsFileTell</a></h3>
 927 <p class="description">Return the current file position.</p>
 928 <p class="code">
 929 off_t cupsFileTell (<br>
 930 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 931 );</p>
 932 <h4 class="parameters">Parameters</h4>
 933 <dl>
 934 <dt>fp</dt>
 935 <dd class="description">CUPS file</dd>
 936 </dl>
 937 <h4 class="returnvalue">Return Value</h4>
 938 <p class="description">File position</p>
 939 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileUnlock">cupsFileUnlock</a></h3>
 940 <p class="description">Unlock access to a file.</p>
 941 <p class="code">
 942 int cupsFileUnlock (<br>
 943 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp<br>
 944 );</p>
 945 <h4 class="parameters">Parameters</h4>
 946 <dl>
 947 <dt>fp</dt>
 948 <dd class="description">CUPS file</dd>
 949 </dl>
 950 <h4 class="returnvalue">Return Value</h4>
 951 <p class="description">0 on success, -1 on error</p>
 952 <h3 class="function"><span class="info">&nbsp;CUPS 1.2/OS X 10.5&nbsp;</span><a name="cupsFileWrite">cupsFileWrite</a></h3>
 953 <p class="description">Write to a file.</p>
 954 <p class="code">
 955 ssize_t cupsFileWrite (<br>
 956 &nbsp;&nbsp;&nbsp;&nbsp;<a href="#cups_file_t">cups_file_t</a> *fp,<br>
 957 &nbsp;&nbsp;&nbsp;&nbsp;const char *buf,<br>
 958 &nbsp;&nbsp;&nbsp;&nbsp;size_t bytes<br>
 959 );</p>
 960 <h4 class="parameters">Parameters</h4>
 961 <dl>
 962 <dt>fp</dt>
 963 <dd class="description">CUPS file</dd>
 964 <dt>buf</dt>
 965 <dd class="description">Buffer</dd>
 966 <dt>bytes</dt>
 967 <dd class="description">Number of bytes to write</dd>
 968 </dl>
 969 <h4 class="returnvalue">Return Value</h4>
 970 <p class="description">Number of bytes written or -1 on error</p>
 971 <h2 class="title"><a name="TYPES">Data Types</a></h2>
 972 <h3 class="typedef"><a name="cups_dentry_t">cups_dentry_t</a></h3>
 973 <p class="description">Directory entry type</p>
 974 <p class="code">
 975 typedef struct <a href="#cups_dentry_s">cups_dentry_s</a> cups_dentry_t;
 976 </p>
 977 <h3 class="typedef"><a name="cups_dir_t">cups_dir_t</a></h3>
 978 <p class="description">Directory type</p>
 979 <p class="code">
 980 typedef struct _cups_dir_s cups_dir_t;
 981 </p>
 982 <h3 class="typedef"><a name="cups_file_t">cups_file_t</a></h3>
 983 <p class="description">CUPS file type</p>
 984 <p class="code">
 985 typedef struct _cups_file_s cups_file_t;
 986 </p>
 987 <h2 class="title"><a name="STRUCTURES">Structures</a></h2>
 988 <h3 class="struct"><a name="cups_dentry_s">cups_dentry_s</a></h3>
 989 <p class="description">Directory entry type</p>
 990 <p class="code">struct cups_dentry_s {<br>
 991 &nbsp;&nbsp;&nbsp;&nbsp;struct stat fileinfo;<br>
 992 &nbsp;&nbsp;&nbsp;&nbsp;char filename[260];<br>
 993 };</p>
 994 <h4 class="members">Members</h4>
 995 <dl>
 996 <dt>fileinfo </dt>
 997 <dd class="description">File information</dd>
 998 <dt>filename[260] </dt>
 999 <dd class="description">File name</dd>
1000 </dl>
1001 </div>
1002 </body>
1003 </html>