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Add pdfioFileCreateTemporary function (Issue #29)
This commit is contained in:
Michael R Sweet
parent
f8b471acfd
commit
316b0ad559
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@ -2,6 +2,12 @@ Changes in PDFio
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================
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v1.1.0 (Month DD, YYYY)
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-----------------------
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- Added `pdfioFileCreateTemporary` function (Issue #29)
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v1.0.1 (March 2, 2022)
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----------------------
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2
Makefile
2
Makefile
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@ -26,7 +26,7 @@ DSONAME =
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LDFLAGS =
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LIBS = -lm -lz
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RANLIB = ranlib
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VERSION = 1.0.1
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VERSION = 1.1
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prefix = /usr/local
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16
doc/pdfio.3
16
doc/pdfio.3
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@ -1,4 +1,4 @@
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.TH pdfio 3 "pdf read/write library" "2022-03-02" "pdf read/write library"
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.TH pdfio 3 "pdf read/write library" "2022-05-15" "pdf read/write library"
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.SH NAME
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pdfio \- pdf read/write library
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.SH Introduction
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@ -2302,6 +2302,20 @@ pdfio_stream_t * pdfioFileCreatePage (
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pdfio_dict_t *dict
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);
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.fi
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.SS pdfioFileCreateTemporary
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.PP
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.nf
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pdfio_file_t * pdfioFileCreateTemporary (
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char *buffer,
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size_t bufsize,
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const char *version,
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pdfio_rect_t *media_box,
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pdfio_rect_t *crop_box,
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pdfio_error_cb_t error_cb,
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void *error_data
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);
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.fi
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.SS pdfioFileFindObj
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Find an object using its object number.
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.PP
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@ -1,13 +1,13 @@
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<!DOCTYPE html>
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<html lang="en-US">
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<head>
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<title>PDFio Programming Manual v1.0.1</title>
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<title>PDFio Programming Manual v1.1</title>
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<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
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<meta name="generator" content="codedoc v3.7">
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<meta name="author" content="Michael R Sweet">
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<meta name="language" content="en-US">
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<meta name="copyright" content="Copyright © 2021-2022 by Michael R Sweet">
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<meta name="version" content="1.0.1">
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<meta name="version" content="1.1">
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<style type="text/css"><!--
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body {
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background: white;
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@ -245,7 +245,7 @@ span.string {
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<body>
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<div class="header">
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<p><img class="title" src="pdfio-512.png"></p>
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<h1 class="title">PDFio Programming Manual v1.0.1</h1>
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<h1 class="title">PDFio Programming Manual v1.1</h1>
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<p>Michael R Sweet</p>
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<p>Copyright © 2021-2022 by Michael R Sweet</p>
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</div>
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@ -383,6 +383,7 @@ span.string {
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<li><a href="#pdfioFileCreateObj">pdfioFileCreateObj</a></li>
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<li><a href="#pdfioFileCreateOutput">pdfioFileCreateOutput</a></li>
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<li><a href="#pdfioFileCreatePage">pdfioFileCreatePage</a></li>
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<li><a href="#pdfioFileCreateTemporary">pdfioFileCreateTemporary</a></li>
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<li><a href="#pdfioFileFindObj">pdfioFileFindObj</a></li>
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<li><a href="#pdfioFileGetAuthor">pdfioFileGetAuthor</a></li>
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<li><a href="#pdfioFileGetCreationDate">pdfioFileGetCreationDate</a></li>
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@ -2730,6 +2731,35 @@ stored as indirect object references.</blockquote>
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</tbody></table>
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<h4 class="returnvalue">Return Value</h4>
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<p class="description">Contents stream</p>
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<h3 class="function"><a id="pdfioFileCreateTemporary">pdfioFileCreateTemporary</a></h3>
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<p class="description"></p>
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<p class="code">
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<a href="#pdfio_file_t">pdfio_file_t</a> *pdfioFileCreateTemporary(char *buffer, size_t bufsize, const char *version, <a href="#pdfio_rect_t">pdfio_rect_t</a> *media_box, <a href="#pdfio_rect_t">pdfio_rect_t</a> *crop_box, <a href="#pdfio_error_cb_t">pdfio_error_cb_t</a> error_cb, void *error_data);</p>
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<h4 class="parameters">Parameters</h4>
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<table class="list"><tbody>
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<tr><th>buffer</th>
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<td class="description">Filename buffer</td></tr>
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<tr><th>bufsize</th>
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<td class="description">Size of filename buffer</td></tr>
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<tr><th>version</th>
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<td class="description">PDF version number or <code>NULL</code> for default (2.0)</td></tr>
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<tr><th>media_box</th>
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<td class="description">Default MediaBox for pages</td></tr>
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<tr><th>crop_box</th>
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<td class="description">Default CropBox for pages</td></tr>
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<tr><th>error_cb</th>
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<td class="description">Error callback or <code>NULL</code> for default</td></tr>
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<tr><th>error_data</th>
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<td class="description">Error callback data, if any</td></tr>
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</tbody></table>
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<h4 class="returnvalue">Return Value</h4>
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<p class="description">Create a temporary PDF file.</p>
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<p class="discussion">This function creates a PDF file with a unique filename in the current
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temporary directory. The temporary file is stored in the string "buffer" an
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will have a ".pdf" extension. Otherwise, this function works the same as
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the <a href="#pdfioFileCreate"><code>pdfioFileCreate</code></a> function.
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</p>
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<h3 class="function"><a id="pdfioFileFindObj">pdfioFileFindObj</a></h3>
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<p class="description">Find an object using its object number.</p>
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<p class="code">
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261
pdfio-file.c
261
pdfio-file.c
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@ -1,7 +1,7 @@
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//
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// PDF file functions for PDFio.
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//
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// Copyright © 2021 by Michael R Sweet.
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// Copyright © 2021-2022 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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@ -264,46 +264,26 @@ pdfioFileCreate(
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// Write a standard PDF header...
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if (!_pdfioFilePrintf(pdf, "%%PDF-%s\n%%\342\343\317\323\n", version))
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{
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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goto error;
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// Create the pages object...
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if ((dict = pdfioDictCreate(pdf)) == NULL)
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{
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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goto error;
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pdfioDictSetName(dict, "Type", "Pages");
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if ((pdf->pages_obj = pdfioFileCreateObj(pdf, dict)) == NULL)
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{
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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goto error;
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// Create the info object...
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if ((info_dict = pdfioDictCreate(pdf)) == NULL)
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{
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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goto error;
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pdfioDictSetDate(info_dict, "CreationDate", time(NULL));
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pdfioDictSetString(info_dict, "Producer", "pdfio/" PDFIO_VERSION);
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if ((pdf->info_obj = pdfioFileCreateObj(pdf, info_dict)) == NULL)
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{
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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goto error;
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// Create random file ID values...
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_pdfioCryptoMakeRandom(id_value, sizeof(id_value));
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@ -315,6 +295,15 @@ pdfioFileCreate(
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}
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return (pdf);
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// Common error handling code...
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error:
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pdfioFileClose(pdf);
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unlink(filename);
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return (NULL);
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}
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@ -535,41 +524,26 @@ pdfioFileCreateOutput(
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// Write a standard PDF header...
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if (!_pdfioFilePrintf(pdf, "%%PDF-%s\n%%\342\343\317\323\n", version))
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{
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pdfioFileClose(pdf);
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return (NULL);
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}
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goto error;
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// Create the pages object...
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if ((dict = pdfioDictCreate(pdf)) == NULL)
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{
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pdfioFileClose(pdf);
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return (NULL);
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}
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goto error;
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pdfioDictSetName(dict, "Type", "Pages");
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if ((pdf->pages_obj = pdfioFileCreateObj(pdf, dict)) == NULL)
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{
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pdfioFileClose(pdf);
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return (NULL);
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}
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goto error;
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// Create the info object...
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if ((info_dict = pdfioDictCreate(pdf)) == NULL)
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{
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pdfioFileClose(pdf);
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return (NULL);
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}
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goto error;
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pdfioDictSetDate(info_dict, "CreationDate", time(NULL));
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pdfioDictSetString(info_dict, "Producer", "pdfio/" PDFIO_VERSION);
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if ((pdf->info_obj = pdfioFileCreateObj(pdf, info_dict)) == NULL)
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{
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pdfioFileClose(pdf);
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return (NULL);
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}
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goto error;
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// Create random file ID values...
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_pdfioCryptoMakeRandom(id_value, sizeof(id_value));
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@ -581,6 +555,13 @@ pdfioFileCreateOutput(
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}
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return (pdf);
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// Common error handling code...
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error:
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pdfioFileClose(pdf);
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return (NULL);
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}
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@ -657,6 +638,194 @@ pdfioFileCreatePage(pdfio_file_t *pdf, // I - PDF file
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}
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//
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// 'pdfioFileCreateTemporary()' - Create a temporary PDF file.
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//
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// This function creates a PDF file with a unique filename in the current
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// temporary directory. The temporary file is stored in the string "buffer" an
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// will have a ".pdf" extension. Otherwise, this function works the same as
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// the @link pdfioFileCreate@ function.
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//
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// @since PDFio v1.1@
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//
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pdfio_file_t *
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pdfioFileCreateTemporary(
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char *buffer, // I - Filename buffer
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size_t bufsize, // I - Size of filename buffer
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const char *version, // I - PDF version number or `NULL` for default (2.0)
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pdfio_rect_t *media_box, // I - Default MediaBox for pages
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pdfio_rect_t *crop_box, // I - Default CropBox for pages
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pdfio_error_cb_t error_cb, // I - Error callback or `NULL` for default
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void *error_data) // I - Error callback data, if any
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{
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pdfio_file_t *pdf; // PDF file
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pdfio_dict_t *dict; // Dictionary for pages object
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pdfio_dict_t *info_dict; // Dictionary for information object
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unsigned char id_value[16]; // File ID value
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int i; // Looping var
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const char *tmpdir; // Temporary directory
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#if _WIN32 || defined(__APPLE__)
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char tmppath[256]; // Temporary directory path
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#endif // _WIN32 || __APPLE__
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unsigned tmpnum; // Temporary filename number
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// Range check input...
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if (!buffer || bufsize < 32)
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{
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if (buffer)
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*buffer = '\0';
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return (NULL);
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}
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if (!version)
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version = "2.0";
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if (!error_cb)
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{
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error_cb = _pdfioFileDefaultError;
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error_data = NULL;
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}
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// Allocate a PDF file structure...
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if ((pdf = (pdfio_file_t *)calloc(1, sizeof(pdfio_file_t))) == NULL)
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{
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pdfio_file_t temp; // Dummy file
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char message[8192]; // Message string
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temp.filename = (char *)"temporary.pdf";
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snprintf(message, sizeof(message), "Unable to allocate memory for PDF file - %s", strerror(errno));
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(error_cb)(&temp, message, error_data);
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*buffer = '\0';
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return (NULL);
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}
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// Create the file...
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#if _WIN32
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if ((tmpdir = getenv("TEMP")) == NULL)
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{
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GetTempPathA(sizeof(tmppath), tmppath);
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tmpdir = tmppath;
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}
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#elif defined(__APPLE__)
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if ((tmpdir = getenv("TMPDIR")) != NULL && access(tmpdir, W_OK))
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tmpdir = NULL;
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if (!tmpdir)
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{
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// Grab the per-process temporary directory for sandboxed apps...
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# ifdef _CS_DARWIN_USER_TEMP_DIR
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if (confstr(_CS_DARWIN_USER_TEMP_DIR, tmppath, sizeof(tmppath)))
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tmpdir = tmppath;
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else
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# endif // _CS_DARWIN_USER_TEMP_DIR
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tmpdir = "/private/tmp";
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}
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#else
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if ((tmpdir = getenv("TMPDIR")) == NULL || access(tmpdir, W_OK))
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tmpdir = "/tmp";
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#endif // _WIN32
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for (i = 0; i < 1000; i ++)
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{
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_pdfioCryptoMakeRandom((uint8_t *)&tmpnum, sizeof(tmpnum));
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snprintf(buffer, bufsize, "%s/%08x.pdf", tmpdir, tmpnum);
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if ((pdf->fd = open(buffer, O_WRONLY | O_BINARY | O_CREAT | O_TRUNC | O_EXCL, 0666)) >= 0)
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break;
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}
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pdf->filename = strdup(buffer);
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if (i >= 1000)
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{
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_pdfioFileError(pdf, "Unable to create file - %s", strerror(errno));
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free(pdf->filename);
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free(pdf);
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*buffer = '\0';
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return (NULL);
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}
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pdf->version = strdup(version);
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pdf->mode = _PDFIO_MODE_WRITE;
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pdf->error_cb = error_cb;
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pdf->error_data = error_data;
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pdf->permissions = PDFIO_PERMISSION_ALL;
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pdf->bufptr = pdf->buffer;
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pdf->bufend = pdf->buffer + sizeof(pdf->buffer);
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if (media_box)
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{
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pdf->media_box = *media_box;
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}
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else
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{
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// Default to "universal" size (intersection of A4 and US Letter)
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pdf->media_box.x2 = 210.0 * 72.0f / 25.4f;
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pdf->media_box.y2 = 11.0f * 72.0f;
|
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}
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if (crop_box)
|
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{
|
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pdf->crop_box = *crop_box;
|
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}
|
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else
|
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{
|
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// Default to "universal" size (intersection of A4 and US Letter)
|
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pdf->crop_box.x2 = 210.0 * 72.0f / 25.4f;
|
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pdf->crop_box.y2 = 11.0f * 72.0f;
|
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}
|
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|
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// Write a standard PDF header...
|
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if (!_pdfioFilePrintf(pdf, "%%PDF-%s\n%%\342\343\317\323\n", version))
|
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goto error;
|
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|
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// Create the pages object...
|
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if ((dict = pdfioDictCreate(pdf)) == NULL)
|
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goto error;
|
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|
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pdfioDictSetName(dict, "Type", "Pages");
|
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|
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if ((pdf->pages_obj = pdfioFileCreateObj(pdf, dict)) == NULL)
|
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goto error;
|
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|
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// Create the info object...
|
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if ((info_dict = pdfioDictCreate(pdf)) == NULL)
|
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goto error;
|
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|
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pdfioDictSetDate(info_dict, "CreationDate", time(NULL));
|
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pdfioDictSetString(info_dict, "Producer", "pdfio/" PDFIO_VERSION);
|
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|
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if ((pdf->info_obj = pdfioFileCreateObj(pdf, info_dict)) == NULL)
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goto error;
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|
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// Create random file ID values...
|
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_pdfioCryptoMakeRandom(id_value, sizeof(id_value));
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|
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if ((pdf->id_array = pdfioArrayCreate(pdf)) != NULL)
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{
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pdfioArrayAppendBinary(pdf->id_array, id_value, sizeof(id_value));
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pdfioArrayAppendBinary(pdf->id_array, id_value, sizeof(id_value));
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}
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return (pdf);
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// Common error handling code...
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error:
|
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pdfioFileClose(pdf);
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unlink(buffer);
|
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*buffer = '\0';
|
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|
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return (NULL);
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}
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|
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|
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//
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// '_pdfioFileFindMappedObj()' - Find a mapped object.
|
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//
|
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|
|
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3
pdfio.h
3
pdfio.h
|
|
@ -1,7 +1,7 @@
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//
|
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// Public header file for PDFio.
|
||||
//
|
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// Copyright © 2021 by Michael R Sweet.
|
||||
// Copyright © 2021-2022 by Michael R Sweet.
|
||||
//
|
||||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||||
// information.
|
||||
|
|
@ -185,6 +185,7 @@ extern pdfio_obj_t *pdfioFileCreateObj(pdfio_file_t *pdf, pdfio_dict_t *dict) _P
|
|||
extern pdfio_file_t *pdfioFileCreateOutput(pdfio_output_cb_t output_cb, void *output_ctx, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
|
||||
// TODO: Add number, array, string, etc. versions of pdfioFileCreateObject?
|
||||
extern pdfio_stream_t *pdfioFileCreatePage(pdfio_file_t *pdf, pdfio_dict_t *dict) _PDFIO_PUBLIC;
|
||||
extern pdfio_file_t *pdfioFileCreateTemporary(char *buffer, size_t bufsize, const char *version, pdfio_rect_t *media_box, pdfio_rect_t *crop_box, pdfio_error_cb_t error_cb, void *error_data) _PDFIO_PUBLIC;
|
||||
extern pdfio_obj_t *pdfioFileFindObj(pdfio_file_t *pdf, size_t number) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioFileGetAuthor(pdfio_file_t *pdf) _PDFIO_PUBLIC;
|
||||
extern time_t pdfioFileGetCreationDate(pdfio_file_t *pdf) _PDFIO_PUBLIC;
|
||||
|
|
|
|||
|
|
@ -372,7 +372,7 @@
|
|||
CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
|
||||
CODE_SIGN_IDENTITY = "Apple Development";
|
||||
COPY_PHASE_STRIP = NO;
|
||||
CURRENT_PROJECT_VERSION = 1.0.1;
|
||||
CURRENT_PROJECT_VERSION = 1.1;
|
||||
DEBUG_INFORMATION_FORMAT = dwarf;
|
||||
ENABLE_STRICT_OBJC_MSGSEND = YES;
|
||||
ENABLE_TESTABILITY = YES;
|
||||
|
|
@ -450,7 +450,7 @@
|
|||
CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
|
||||
CODE_SIGN_IDENTITY = "Apple Development";
|
||||
COPY_PHASE_STRIP = NO;
|
||||
CURRENT_PROJECT_VERSION = 1.0.1;
|
||||
CURRENT_PROJECT_VERSION = 1.1;
|
||||
DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
|
||||
ENABLE_HARDENED_RUNTIME = YES;
|
||||
ENABLE_NS_ASSERTIONS = NO;
|
||||
|
|
|
|||
13
testpdfio.c
13
testpdfio.c
|
|
@ -506,6 +506,7 @@ do_unit_tests(void)
|
|||
_pdfio_value_t value; // Value
|
||||
size_t first_image, // First image object
|
||||
num_pages; // Number of pages written
|
||||
char temppdf[1024]; // Temporary PDF file
|
||||
static const char *complex_dict = // Complex dictionary value
|
||||
"<</Annots 5457 0 R/Contents 5469 0 R/CropBox[0 0 595.4 842]/Group 725 0 R"
|
||||
"/MediaBox[0 0 595.4 842]/Parent 23513 0 R/Resources<</ColorSpace<<"
|
||||
|
|
@ -1107,6 +1108,18 @@ do_unit_tests(void)
|
|||
if (read_unit_file("testpdfio-aesp.pdf", num_pages, first_image, false))
|
||||
return (1);
|
||||
|
||||
fputs("pdfioFileCreateTemporary: ", stdout);
|
||||
if ((outpdf = pdfioFileCreateTemporary(temppdf, sizeof(temppdf), NULL, NULL, NULL, (pdfio_error_cb_t)error_cb, &error)) != NULL)
|
||||
printf("PASS (%s)\n", temppdf);
|
||||
else
|
||||
return (1);
|
||||
|
||||
if (write_unit_file(inpdf, outpdf, &num_pages, &first_image))
|
||||
return (1);
|
||||
|
||||
if (read_unit_file(temppdf, num_pages, first_image, false))
|
||||
return (1);
|
||||
|
||||
pdfioFileClose(inpdf);
|
||||
|
||||
return (0);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user