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projs/trunk/projs/20161008_web_page_thumbnail_make/indexfile_make.php revision 46 by dashley, Fri Oct 14 02:17:12 2016 UTC projs/dtats/trunk/projs/20161008_web_page_thumbnail_make/indexfile_make.php revision 110 by dashley, Sat Dec 31 19:42:04 2016 UTC
# Line 1  Line 1 
1  <?php  <?php
2  //--------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
3  //indexfile_make.php, v0.1a, Copyright David T. Ashley, 2016  //$Header$
4  //--------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
5  //-------------------------------------------------------------------------------------------------  //This source code and any program in which it is compiled/used is provided under the MIT
6  //Copyright 2016 David T. Ashley  //LICENSE (full license text below).
7  //-------------------------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
8  //This source code and any program in which it is compiled/used is provided under the GNU GENERAL  //Copyright (c) 2016 David T. Ashley
9  //PUBLIC LICENSE, Version 3, full license text below.  //
10  //-------------------------------------------------------------------------------------------------  //Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
11  //                    GNU GENERAL PUBLIC LICENSE  //associated documentation files (the "Software"), to deal in the Software without restriction,
12  //                       Version 3, 29 June 2007  //including without limitation the rights to use, copy, modify, merge, publish, distribute,
13  //  //sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
14  // Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>  //furnished to do so, subject to the following conditions:
15  // Everyone is permitted to copy and distribute verbatim copies  //
16  // of this license document, but changing it is not allowed.  //The above copyright notice and this permission notice shall be included in all copies or
17  //  //substantial portions of the Software.
18  //                            Preamble  //
19  //  //THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
20  //  The GNU General Public License is a free, copyleft license for  //NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21  //software and other kinds of works.  //NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
22  //  //DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23  //  The licenses for most software and other practical works are designed  //OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  //to take away your freedom to share and change the works.  By contrast,  //-------------------------------------------------------------------------------------------------
25  //the GNU General Public License is intended to guarantee your freedom to  //--------------------------------------------------------------------------------
26  //share and change all versions of a program--to make sure it remains free  //C O N F I G U R A T I O N
27  //software for all its users.  We, the Free Software Foundation, use the  //--------------------------------------------------------------------------------
28  //GNU General Public License for most of our software; it applies also to  //Configuration switch combinations were not tested.  E-mail me any program
29  //any other work released this way by its authors.  You can apply it to  //corrections (dashley@gmail.com).
30  //your programs, too.  define ("CFG_PROGNAME", "indexfile_make.php");
31  //     //Program name.
32  //  When we speak of free software, we are referring to freedom, not  define ("CFG_CONSOLE_STD_LINE_LEN", 78);
33  //price.  Our General Public Licenses are designed to make sure that you     //Number of characters per line preferred for console output.
34  //have the freedom to distribute copies of free software (and charge for  define ("CFG_THUMBNAIL_FILENAME_SUFFIX", "_small");
35  //them if you wish), that you receive source code or can get it if you     //String added just before the filename extension to choose thumbnail names
36  //want it, that you can change the software or use pieces of it in new     //based on name of full-sized image.
37  //free programs, and that you know you can do these things.  define ("CFG_INDEXFILE_NAME", "index2.php");
38  //     //Name of the file containing the index.  PHP code is assumed, but the
39  //  To protect your rights, we need to prevent others from denying you     //file can be harvested for the HTML.
40  //these rights or asking you to surrender the rights.  Therefore, you have  define ("CFG_INDEXFILE_PICREF_INDENT", 3);
41  //certain responsibilities if you distribute copies of the software, or if     //The number of spaces to indent each reference to a picture.
42  //you modify it: responsibilities to respect the freedom of others.  define ("CFG_FILEEXTENSIONS_PHOTO", "jpg/jpeg");
43  //     //The file extensions that will be recognized as photos.
44  //  For example, if you distribute copies of such a program, whether  define ("CFG_FILEEXTENSIONS_LINK", "mov");
45  //gratis or for a fee, you must pass on to the recipients the same     //File extensions that will be linked to.  All others will be mentioned
46  //freedoms that you received.  You must make sure that they, too, receive     //in the generated output but not linked to.
47  //or can get the source code.  And you must show them these terms so they  //--------------------------------------------------------------------------------
48  //know their rights.  //Repeats a character to the console output a certain number of times.
49  //  function rep_char_con($c, $n)
50  //  Developers that use the GNU GPL protect your rights with two steps:  {
51  //(1) assert copyright on the software, and (2) offer you this License     while ($n--)
52  //giving you legal permission to copy, distribute and/or modify it.        echo $c;
53  //  }
54  //  For the developers' and authors' protection, the GPL clearly explains  //--------------------------------------------------------------------------------
55  //that there is no warranty for this free software.  For both users' and  //Writes a standard thick horizontal line to the console.
56  //authors' sake, the GPL requires that modified versions be marked as  function hor_line_thick()
57  //changed, so that their problems will not be attributed erroneously to  {
58  //authors of previous versions.     rep_char_con("=", CFG_CONSOLE_STD_LINE_LEN);
59  //     echo "\n";
60  //  Some devices are designed to deny users access to install or run  }
61  //modified versions of the software inside them, although the manufacturer  //--------------------------------------------------------------------------------
62  //can do so.  This is fundamentally incompatible with the aim of  //Writes a standard thin horizontal line to the console.
63  //protecting users' freedom to change the software.  The systematic  function hor_line_thin()
64  //pattern of such abuse occurs in the area of products for individuals to  {
65  //use, which is precisely where it is most unacceptable.  Therefore, we     rep_char_con("-", CFG_CONSOLE_STD_LINE_LEN);
66  //have designed this version of the GPL to prohibit the practice for those     echo "\n";
67  //products.  If such problems arise substantially in other domains, we  }
68  //stand ready to extend this provision to those domains in future versions  //--------------------------------------------------------------------------------
69  //of the GPL, as needed to protect the freedom of users.  //Returns an array of all files in the working directory.
70  //  //If no files can be found, returns FALSE.
71  //  Finally, every program is threatened constantly by software patents.  function get_file_names_in_dir()
72  //States should not allow patents to restrict development and use of  {
73  //software on general-purpose computers, but in those that do, we wish to     //Get directory list.
74  //avoid the special danger that patents applied to a free program could     $rv = scandir (".");
75  //make it effectively proprietary.  To prevent this, the GPL assures that  
76  //patents cannot be used to render the program non-free.     //If the list is empty, something went wrong.  Return FALSE.
77  //     if ($rv === FALSE)
78  //  The precise terms and conditions for copying, distribution and        return FALSE;
79  //modification follow.  
80  //     return $rv;
81  //                       TERMS AND CONDITIONS  }
82  //  //--------------------------------------------------------------------------------
83  //  0. Definitions.  //Accepts a non-negative integer as an integer or a string.  Adds commas in the
84  //  //right places to make it more human readable.
85  //  "This License" refers to version 3 of the GNU General Public License.  function int_nonneg_commanate($in_ui)
86  //  {
87  //  "Copyright" also means copyright-like laws that apply to other kinds of     //Ensure the integer is an integer from PHP's point of view.
88  //works, such as semiconductor masks.     $in_ui = (int)$in_ui;
89  //  
90  //  "The Program" refers to any copyrightable work licensed under this     //If a negative number was passed in, clip it.
91  //License.  Each licensee is addressed as "you".  "Licensees" and     if ($in_ui < 0)
92  //"recipients" may be individuals or organizations.        $in_ui = 0;
93  //  
94  //  To "modify" a work means to copy from or adapt all or part of the work     //Make a proper numerical string with commas out of it.
95  //in a fashion requiring copyright permission, other than the making of an     $s_ui = number_format($in_ui);
96  //exact copy.  The resulting work is called a "modified version" of the  
97  //earlier work or a work "based on" the earlier work.     return $s_ui;
98  //  }
99  //  A "covered work" means either the unmodified Program or a work based  //--------------------------------------------------------------------------------
100  //on the Program.  //Returns TRUE if a file name appears to be a valid full-sized image name,
101  //  //or FALSE otherwise.
102  //  To "propagate" a work means to do anything with it that, without  function is_full_sized_image_file_name($in_filename)
103  //permission, would make you directly or secondarily liable for  {
104  //infringement under applicable copyright law, except executing it on a     //Convert the string name to all lower case.  This will do for
105  //computer or modifying a private copy.  Propagation includes copying,     //comparisons and tests.
106  //distribution (with or without modification), making available to the     $s = strtolower($s);
107  //public, and in some countries other activities as well.  
108  //     //Attempt to split the name into a base and an extension.  Any failure
109  //  To "convey" a work means any kind of propagation that enables other     //means it is an unsuitable name.
110  //parties to make or receive copies.  Mere interaction with a user through     $extension_start = strrpos($in_filename, ".");
111  //a computer network, with no transfer of a copy, is not conveying.        //Find position of last "." in string.  This should precede the
112  //        //file extension.
113  //  An interactive user interface displays "Appropriate Legal Notices"  
114  //to the extent that it includes a convenient and prominently visible     if ($extension_start === FALSE)
115  //feature that (1) displays an appropriate copyright notice, and (2)     {
116  //tells the user that there is no warranty for the work (except to the        //Bad name.  Unsuitable.
117  //extent that warranties are provided), that licensees may convey the        return FALSE;
118  //work under this License, and how to view a copy of this License.  If     }
119  //the interface presents a list of user commands or options, such as a  
120  //menu, a prominent item in the list meets this criterion.     //Calculate the base and extension.
121  //     $filename_base    = substr($in_filename, 0, $extension_start);
122  //  1. Source Code.     $filename_extension = substr($in_filename, $extension_start + 1);
123  //  
124  //  The "source code" for a work means the preferred form of the work     //If the extension is neither "jpg" nor "jpeg", it is unsuitable.
125  //for making modifications to it.  "Object code" means any non-source     if (($filename_extension != "jpg") && ($filename_extension != "jpeg"))
126  //form of a work.        return FALSE;
127  //  
128  //  A "Standard Interface" means an interface that either is an official     //If the filename base is empty, the filename is unsuitable.
129  //standard defined by a recognized standards body, or, in the case of     if (strlen($filename_base) == 0)
130  //interfaces specified for a particular programming language, one that        return FALSE;
131  //is widely used among developers working in that language.  
132  //     //If the last characters of the base are the CFG_THUMBNAIL_FILENAME_SUFFIX,
133  //  The "System Libraries" of an executable work include anything, other     //the name is unsuitable.
134  //than the work as a whole, that (a) is included in the normal form of     if (strlen($filename_base) >= strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))
135  //packaging a Major Component, but which is not part of that Major     {
136  //Component, and (b) serves only to enable use of the work with that        if (substr($filename_base, strlen($filename_base) - strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))
137  //Major Component, or to implement a Standard Interface for which an            == CFG_THUMBNAIL_FILENAME_SUFFIX)
138  //implementation is available to the public in source code form.  A           return FALSE;
139  //"Major Component", in this context, means a major essential component     }
140  //(kernel, window system, and so on) of the specific operating system  
141  //(if any) on which the executable work runs, or a compiler used to     //Looks good.
142  //produce the work, or an object code interpreter used to run it.     return TRUE;
143  //  }
144  //  The "Corresponding Source" for a work in object code form means all  //--------------------------------------------------------------------------------
145  //the source code needed to generate, install, and (for an executable  //As a function of the file name, creates the file name for the thumbnail.
146  //work) run the object code and to modify the work, including scripts to  function file_name_to_thumbnail_name($in_filename)
147  //control those activities.  However, it does not include the work's  {
148  //System Libraries, or general-purpose tools or generally available free     $extension_start = strrpos($in_filename, ".");
149  //programs which are used unmodified in performing those activities but        //Find position of last "." in string.  This should precede the
150  //which are not part of the work.  For example, Corresponding Source        //file extension.
151  //includes interface definition files associated with source files for     if ($extension_start === FALSE)
152  //the work, and the source code for shared libraries and dynamically     {
153  //linked subprograms that the work is specifically designed to require,        //"." not found.  Should not happen.  Filenames were checked in advance.
154  //such as by intimate data communication or control flow between those        echo "Fatal internal error at line " . __LINE__ . "\n";
155  //subprograms and other parts of the work.        exit(1);
156  //     }
157  //  The Corresponding Source need not include anything that users  
158  //can regenerate automatically from other parts of the Corresponding     $filename_prefix    = substr($in_filename, 0, $extension_start);
159  //Source.     $filename_extension = substr($in_filename, $extension_start);
160  //  
161  //  The Corresponding Source for a work in source code form is that     $rv = $filename_prefix . CFG_THUMBNAIL_FILENAME_SUFFIX . $filename_extension;
162  //same work.  
163  //     return $rv;
164  //  2. Basic Permissions.  }
165  //  //--------------------------------------------------------------------------------
166  //  All rights granted under this License are granted for the term of  //Writes the index file preamble to the index file.  This is very much
167  //copyright on the Program, and are irrevocable provided the stated  //dependent on how the thumbnails will be used.  This is currently customized
168  //conditions are met.  This License explicitly affirms your unlimited  //for what Dave Ashley does.
169  //permission to run the unmodified Program.  The output from running a  function write_index_file_preamble($handle, $idstring)
170  //covered work is covered by this License only if the output, given its  {
171  //content, constitutes a covered work.  This License acknowledges your     fwrite($handle, "<" . "?" . "php\n");
172  //rights of fair use or other equivalent, as provided by copyright law.     fwrite($handle, "require_once(\"style/std/stdwpstyle.inc\");\n");
173  //     fwrite($handle, "?" . ">" . "\n");
174  //  You may make, run and propagate covered works that you do not     fwrite($handle, "<" . "?" . "php\n");
175  //convey, without conditions so long as your license otherwise remains     fwrite($handle, "   $" . "thispage = new StdWpStyle();\n");
176  //in force.  You may convey covered works to others for the sole purpose     fwrite($handle, "\n");
177  //of having them make modifications exclusively for you, or provide you     fwrite($handle, "   $" . "thispage->static_page_header_title_std(\"" . $idstring . "\",\n");
178  //with facilities for running those works, provided that you comply with     fwrite($handle, "                                           \"" . $idstring . "\",\n");
179  //the terms of this License in conveying all material for which you do     fwrite($handle, "                                           \"\");\n");
180  //not control copyright.  Those thus making or running the covered works     fwrite($handle, "   $" . "thispage->static_page_photo_thumbnail_explanation(TRUE, TRUE);\n");
181  //for you must do so exclusively on your behalf, under your direction     fwrite($handle, "?" . ">" . "\n");
182  //and control, on terms that prohibit them from making any copies of     for ($i = 0; $i < CFG_INDEX_PARAGRAPH_INDENT; $i++)
183  //your copyrighted material outside their relationship with you.     {
184  //        fwrite($handle, " ");
185  //  Conveying under any other circumstances is permitted solely under     }
186  //the conditions stated below.  Sublicensing is not allowed; section 10     fwrite($handle, "\n<p align=\"center\">\n");
187  //makes it unnecessary.  }
188  //  //--------------------------------------------------------------------------------
189  //  3. Protecting Users' Legal Rights From Anti-Circumvention Law.  //Writes the index file postamble to the index file.  This is very much
190  //  //dependent on how the thumbnails will be used.  This is currently customized
191  //  No covered work shall be deemed part of an effective technological  //for what Dave Ashley does.
192  //measure under any applicable law fulfilling obligations under article  function write_index_file_postamble($handle)
193  //11 of the WIPO copyright treaty adopted on 20 December 1996, or  {
194  //similar laws prohibiting or restricting circumvention of such     for ($i = 0; $i < CFG_INDEX_PARAGRAPH_INDENT; $i++)
195  //measures.     {
196  //        fwrite($handle, " ");
197  //  When you convey a covered work, you waive any legal power to forbid     }
198  //circumvention of technological measures to the extent such circumvention     fwrite($handle, "</p>\n\n");
199  //is effected by exercising rights under this License with respect to     fwrite($handle, "<" . "?" . "php\n");
200  //the covered work, and you disclaim any intention to limit operation or     fwrite($handle, "   $" . "thispage->static_page_footer_std();\n");
201  //modification of the work as a means of enforcing, against the work's     fwrite($handle, "?" . ">" . "\n");
202  //users, your or third parties' legal rights to forbid circumvention of  }
203  //technological measures.  //--------------------------------------------------------------------------------
204  //  //Writes a line to the index file corresponding to a linked larger picture
205  //  4. Conveying Verbatim Copies.  //reprsented by a thumbnail.
206  //  function write_index_line(  $handle,
207  //  You may convey verbatim copies of the Program's source code as you                              $filename,
208  //receive it, in any medium, provided that you conspicuously and                              $thumbnailname,
209  //appropriately publish on each copy an appropriate copyright notice;                              $filename_filesize,
210  //keep intact all notices stating that this License and any                              $filename_xdim,
211  //non-permissive terms added in accord with section 7 apply to the code;                              $filename_ydim,
212  //keep intact all notices of the absence of any warranty; and give all                              $thumbnailname_filesize,
213  //recipients a copy of this License along with the Program.                              $thumbnailname_xdim,
214  //                              $thumbnailname_ydim)
215  //  You may charge any price or no price for each copy that you convey,  {
216  //and you may offer support or warranty protection for a fee.  //<a href="dscn1258.jpg"><img border="0" src="dscn1258_small.jpg" alt="dscn1258.jpg (4932338 bytes)" width="125" height="93"></a>
217  //     //Indent.
218  //  5. Conveying Modified Source Versions.     for ($i = 0; $i < CFG_INDEX_LINK_INDENT; $i++)
219  //     {
220  //  You may convey a work based on the Program, or the modifications to        fwrite($handle, " ");
221  //produce it from the Program, in the form of source code under the     }
222  //terms of section 4, provided that you also meet all of these conditions:  
223  //     fwrite($handle, "<a href=\"");
224  //    a) The work must carry prominent notices stating that you modified     fwrite($handle, $filename);
225  //    it, and giving a relevant date.     fwrite($handle, "\"><img border=\"0\" src=\"");
226  //     fwrite($handle, $thumbnailname);
227  //    b) The work must carry prominent notices stating that it is     fwrite($handle, "\" alt=\"");
228  //    released under this License and any conditions added under section     fwrite($handle, $filename);
229  //    7.  This requirement modifies the requirement in section 4 to     fwrite($handle, " (");
230  //    "keep intact all notices".     fwrite($handle, int_nonneg_commanate($filename_filesize));
231  //     fwrite($handle, " bytes)\" ");
232  //    c) You must license the entire work, as a whole, under this     fwrite($handle, "title=\"");
233  //    License to anyone who comes into possession of a copy.  This     fwrite($handle, $filename);
234  //    License will therefore apply, along with any applicable section 7     fwrite($handle, " (");
235  //    additional terms, to the whole of the work, and all its parts,     fwrite($handle, int_nonneg_commanate($filename_filesize));
236  //    regardless of how they are packaged.  This License gives no     fwrite($handle, " bytes)\" width=\"");
237  //    permission to license the work in any other way, but it does not     fwrite($handle, $thumbnailname_xdim);
238  //    invalidate such permission if you have separately received it.     fwrite($handle, "\" height=\"");
239  //     fwrite($handle, $thumbnailname_ydim);
240  //    d) If the work has interactive user interfaces, each must display     fwrite($handle, "\"></a>");
241  //    Appropriate Legal Notices; however, if the Program has interactive     fwrite($handle, "\n");
242  //    interfaces that do not display Appropriate Legal Notices, your  }
243  //    work need not make them do so.  //--------------------------------------------------------------------------------
244  //     //Write introductory message.
245  //  A compilation of a covered work with other separate and independent     hor_line_thick();
246  //works, which are not by their nature extensions of the covered work,     echo CFG_PROGNAME . " Copyright (C) 2015 David T. Ashley\n";
247  //and which are not combined with it such as to form a larger program,     echo "This program comes with ABSOLUTELY NO WARRANTY; and is licensed under\n";
248  //in or on a volume of a storage or distribution medium, is called an     echo "the GNU General Public License, Version 3.  A copy of this license is\n";
249  //"aggregate" if the compilation and its resulting copyright are not     echo "provided in the source code of this program.\n";
250  //used to limit the access or legal rights of the compilation's users     hor_line_thin();
251  //beyond what the individual works permit.  Inclusion of a covered work     //-----------------------------------------------------------------------------
252  //in an aggregate does not cause this License to apply to the other     //Get the date, time, and PID strings that will be used for the rest of the
253  //parts of the aggregate.     //script.
254  //     $scr_datestring = date("Ymd_His");
255  //  6. Conveying Non-Source Forms.     $scr_pid        = getmypid();
256  //     if ($scr_pid === FALSE)
257  //  You may convey a covered work in object code form under the terms        $scr_pid = 0;
258  //of sections 4 and 5, provided that you also convey the     //-----------------------------------------------------------------------------
259  //machine-readable Corresponding Source under the terms of this License,     //If the index file exists, rename it out of the way.  This is to prevent
260  //in one of these ways:     //the loss of information.
261  //     if (file_exists(CFG_INDEXFILE_NAME))
262  //    a) Convey the object code in, or embodied in, a physical product     {
263  //    (including a physical distribution medium), accompanied by the        rename(CFG_INDEXFILE_NAME, $scr_datestring . "_" . $scr_pid . ".php");
264  //    Corresponding Source fixed on a durable physical medium     }      
265  //    customarily used for software interchange.     //-----------------------------------------------------------------------------
266  //     //Open the index file and write the preamble.
267  //    b) Convey the object code in, or embodied in, a physical product     $indexfile_handle = fopen(CFG_INDEXFILE_NAME, "w");
268  //    (including a physical distribution medium), accompanied by a     if ($indexfile_handle === FALSE)
269  //    written offer, valid for at least three years and valid for as     {
270  //    long as you offer spare parts or customer support for that product        echo "FATAL:  unable to open index file.\n";
271  //    model, to give anyone who possesses the object code either (1) a        exit(1);
272  //    copy of the Corresponding Source for all the software in the     }
273  //    product that is covered by this License, on a durable physical     write_index_file_preamble($indexfile_handle, $scr_datestring . "_" . $scr_pid);
274  //    medium customarily used for software interchange, for a price no     //-----------------------------------------------------------------------------
275  //    more than your reasonable cost of physically performing this     //Get and emit the names of everything in the directory.
276  //    conveying of source, or (2) access to copy the     $file_list = get_file_names_in_dir();
277  //    Corresponding Source from a network server at no charge.     if ($file_list === FALSE)
278  //     {
279  //    c) Convey individual copies of the object code with a copy of the        echo "List of files from PHP function scandir() is empty.\n";
280  //    written offer to provide the Corresponding Source.  This        echo "Serious internal error, or nothing to do.  Script cannot continue.\n";
281  //    alternative is allowed only occasionally and noncommercially, and        hor_line_thick();
282  //    only if you received the object code with such an offer, in accord        exit(1);
283  //    with subsection 6b.     }
284  //     else
285  //    d) Convey the object code by offering access from a designated     {
286  //    place (gratis or for a charge), and offer equivalent access to the       echo "Files in working directory (unsorted, unfiltered, "
287  //    Corresponding Source in the same way through the same place at no            .
288  //    further charge.  You need not require recipients to copy the            count($file_list)
289  //    Corresponding Source along with the object code.  If the place to            .
290  //    copy the object code is a network server, the Corresponding Source            " files):\n";
291  //    may be on a different server (operated by you or a third party)       for ($i = 0; $i < count($file_list); $i++)
292  //    that supports equivalent copying facilities, provided you maintain          echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";
293  //    clear directions next to the object code saying where to find the     }
294  //    Corresponding Source.  Regardless of what server hosts the     hor_line_thin();
295  //    Corresponding Source, you remain obligated to ensure that it is     //-----------------------------------------------------------------------------
296  //    available for as long as needed to satisfy these requirements.     //Remove the standard directory entries "." and ".." from the list, and
297  //     //remove any directories.
298  //    e) Convey the object code using peer-to-peer transmission, provided     $temp_list = $file_list;
299  //    you inform other peers where the object code and Corresponding     unset($file_list);
300  //    Source of the work are being offered to the general public at no     $n = 0;
301  //    charge under subsection 6d.     for ($i = 0; $i < count($temp_list); $i++)
302  //     {
303  //  A separable portion of the object code, whose source code is excluded        //echo "Checking " . $temp_list[$i] . "\n";
304  //from the Corresponding Source as a System Library, need not be  
305  //included in conveying the object code work.        if (strcmp($temp_list[$i], ".") == 0)
306  //        {
307  //  A "User Product" is either (1) a "consumer product", which means any           //. entry, not a file.
308  //tangible personal property which is normally used for personal, family,        }
309  //or household purposes, or (2) anything designed or sold for incorporation        else if (strcmp($temp_list[$i], "..") == 0)
310  //into a dwelling.  In determining whether a product is a consumer product,        {
311  //doubtful cases shall be resolved in favor of coverage.  For a particular           //.. entry, not a file.
312  //product received by a particular user, "normally used" refers to a        }
313  //typical or common use of that class of product, regardless of the status        else if (is_file($temp_list[$i]))
314  //of the particular user or of the way in which the particular user        {
315  //actually uses, or expects or is expected to use, the product.  A product           //This is a regular file.
316  //is a consumer product regardless of whether the product has substantial           $file_list[] = $temp_list[$i];
317  //commercial, industrial or non-consumer uses, unless such uses represent           $n++;
318  //the only significant mode of use of the product.        }
319  //     }
320  //  "Installation Information" for a User Product means any methods,    
321  //procedures, authorization keys, or other information required to install     if ($n == 0)
322  //and execute modified versions of a covered work in that User Product from        $file_list = FALSE;
323  //a modified version of its Corresponding Source.  The information must  
324  //suffice to ensure that the continued functioning of the modified object     unset($n);
325  //code is in no case prevented or interfered with solely because     unset($temp_list);
326  //modification has been made.     //-----------------------------------------------------------------------------
327  //     //If there is nothing to do, end the script.
328  //  If you convey an object code work under this section in, or with, or     if ($file_list === FALSE)
329  //specifically for use in, a User Product, and the conveying occurs as     {
330  //part of a transaction in which the right of possession and use of the        echo "No files to process.\n";
331  //User Product is transferred to the recipient in perpetuity or for a        hor_line_thick();
332  //fixed term (regardless of how the transaction is characterized), the        exit(0);
333  //Corresponding Source conveyed under this section must be accompanied     }
334  //by the Installation Information.  But this requirement does not apply     //-----------------------------------------------------------------------------
335  //if neither you nor any third party retains the ability to install     //Sort the list.  This is a non-event.  The only rationale for sorting is that
336  //modified object code on the User Product (for example, the work has     //it ensures that the same set of files will be processed in the same order,
337  //been installed in ROM).     //regardless of the order provided by the underlying OS internals.
338  //     sort($file_list);
339  //  The requirement to provide Installation Information does not include a     //-----------------------------------------------------------------------------
340  //requirement to continue to provide support service, warranty, or updates     //Emit the names we now have.
341  //for a work that has been modified or installed by the recipient, or for     echo "Files in working directory (directory entries removed, sorted, "
342  //the User Product in which it has been modified or installed.  Access to a          .
343  //network may be denied when the modification itself materially and          count($file_list)
344  //adversely affects the operation of the network or violates the rules and          .
345  //protocols for communication across the network.          " files):\n";
346  //     for ($i = 0; $i < count($file_list); $i++)
347  //  Corresponding Source conveyed, and Installation Information provided,        echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";
348  //in accord with this section must be in a format that is publicly     hor_line_thin();
349  //documented (and with an implementation available to the public in  
350  //source code form), and must require no special password or key for     //-----------------------------------------------------------------------------
351  //unpacking, reading or copying.     //For each file in the list, process it.  There are different processing
352  //     //actions for each one.
353  //  7. Additional Terms.     for ($i = 0; $i < count($file_list); $i++)
354  //     {
355  //  "Additional permissions" are terms that supplement the terms of this        if (is_full_sized_image_file_name($file_list[$i]))
356  //License by making exceptions from one or more of its conditions.        {
357  //Additional permissions that are applicable to the entire Program shall           $thumbnail_name = file_name_to_thumbnail_name($file_list[$i]);
358  //be treated as though they were included in this License, to the extent  
359  //that they are valid under applicable law.  If additional permissions           $image_data = getimagesize($file_list[$i]);
360  //apply only to part of the Program, that part may be used separately           $thumbnail_data = getimagesize($thumbnail_name);
361  //under those permissions, but the entire Program remains governed by  
362  //this License without regard to the additional permissions.           write_index_line(  $indexfile_handle,
363  //                              $file_list[$i],
364  //  When you convey a copy of a covered work, you may at your option                              $thumbnail_name,
365  //remove any additional permissions from that copy, or from any part of                              filesize($file_list[$i]),
366  //it.  (Additional permissions may be written to require their own                              $image_data[0],
367  //removal in certain cases when you modify the work.)  You may place                              $image_data[1],
368  //additional permissions on material, added by you to a covered work,                              filesize($thumbnail_name),
369  //for which you have or can give appropriate copyright permission.                              $thumbnail_data[0],
370  //                              $thumbnail_data[1]);
371  //  Notwithstanding any other provision of this License, for material you  
372  //add to a covered work, you may (if authorized by the copyright holders of        }
373  //that material) supplement the terms of this License with terms:     }
374  //  
375  //    a) Disclaiming warranty or limiting liability differently from the     //-----------------------------------------------------------------------------
376  //    terms of sections 15 and 16 of this License; or     //Complete and close up the index file.
377  //     write_index_file_postamble($indexfile_handle);
378  //    b) Requiring preservation of specified reasonable legal notices or     fclose($indexfile_handle);
379  //    author attributions in that material or in the Appropriate Legal  
380  //    Notices displayed by works containing it; or  //   $i         = 0;
381  //  //   $completed = 0;
382  //    c) Prohibiting misrepresentation of the origin of that material, or  //   while (($completed < CFG_MAX_THUMBNAILS_PER_INVOCATION) && ($i < count($file_list)))
383  //    requiring that modified versions of such material be marked in  //   {
384  //    reasonable ways as different from the original version; or  //      if (is_full_sized_image_file_name($file_list[$i]))
385  //  //      {
386  //    d) Limiting the use for publicity purposes of names of licensors or  //         $thumbnail_name = file_name_to_thumbnail_name($file_list[$i]);
387  //    authors of the material; or  //
388  //  //         if (file_exists($thumbnail_name))
389  //    e) Declining to grant rights under trademark law for use of some  //         {
390  //    trade names, trademarks, or service marks; or  //            echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping because corresponding thumbnail exists.\n";
391  //  //            hor_line_thin();
392  //    f) Requiring indemnification of licensors and authors of that  //         }
393  //    material by anyone who conveys the material (or modified versions of  //         else
394  //    it) with contractual assumptions of liability to the recipient, for  //         {
395  //    any liability that these contractual assumptions directly impose on  //            echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : creating thumbnail.\n";
396  //    those licensors and authors.  //
397  //  //            echo "Creating thumbnail \"" .
398  //  All other non-permissive additional terms are considered "further  //                 $thumbnail_name .
399  //restrictions" within the meaning of section 10.  If the Program as you  //                 "\" from image \"" .
400  //received it, or any part of it, contains a notice stating that it is  //                 $file_list[$i] .
401  //governed by this License along with a term that is a further  //                 "\".\n";
402  //restriction, you may remove that term.  If a license document contains  //
403  //a further restriction but permits relicensing or conveying under this  //            create_thumbnail($file_list[$i],
404  //License, you may add to a covered work material governed by the terms  //                             $thumbnail_name,
405  //of that license document, provided that the further restriction does  //                             $filename_filesize,
406  //not survive such relicensing or conveying.  //                             $filename_xdim,
407  //  //                             $filename_ydim,
408  //  If you add terms to a covered work in accord with this section, you  //                             $thumbnail_filesize,
409  //must place, in the relevant source files, a statement of the  //                             $thumbnail_xdim,
410  //additional terms that apply to those files, or a notice indicating  //                             $thumbnail_ydim);
411  //where to find the applicable terms.  //
412  //  //            echo "Conversion complete.\n";
413  //  Additional terms, permissive or non-permissive, may be stated in the  //            echo "   Full-sized image file size/xdim/ydim = " .
414  //form of a separately written license, or stated as exceptions;  //                 $filename_filesize . "/" . $filename_xdim . "/" . $filename_ydim .
415  //the above requirements apply either way.  //                 ",\n";
416  //  //            echo "   Thumbnail image  filesize/xdim/ydim = " .
417  //  8. Termination.  //                 $thumbnail_filesize . "/" . $thumbnail_xdim . "/" . $thumbnail_ydim .
418  //  //                 ",\n";
419  //  You may not propagate or modify a covered work except as expressly  //
420  //provided under this License.  Any attempt otherwise to propagate or  //            hor_line_thin();
421  //modify it is void, and will automatically terminate your rights under  //            $completed++;
422  //this License (including any patent licenses granted under the third  //         }
423  //paragraph of section 11).  //      }
424  //  //      else
425  //  However, if you cease all violation of this License, then your  //      {
426  //license from a particular copyright holder is reinstated (a)  //         //Unsuitable base name.  Can't use it.
427  //provisionally, unless and until the copyright holder explicitly and  //         echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping due to unsuitable name.\n";
428  //finally terminates your license, and (b) permanently, if the copyright  //         hor_line_thin();
429  //holder fails to notify you of the violation by some reasonable means  //      }
430  //prior to 60 days after the cessation.  //
431  //  //      $i++;
432  //  Moreover, your license from a particular copyright holder is  //   }
433  //reinstated permanently if the copyright holder notifies you of the  //
434  //violation by some reasonable means, this is the first time you have  //   //Emit a message about whether the program should be run again.  I am aware of
435  //received notice of violation of this License (for any work) from that  //   //the uncovered case--where the last thumbnail was made on the last iteration
436  //copyright holder, and you cure the violation prior to 30 days after  //   //of this invocation--but I will leave it uncovered for now.  All that happens
437  //your receipt of the notice.  //   //is the user runs the program unnecessarily one more time.
438  //  //   if ($completed == 0)
439  //  Termination of your rights under this section does not terminate the  //   {
440  //licenses of parties who have received copies or rights from you under  //      echo "No thumbnails were created--this program is done creating thumbnails.\n";
441  //this License.  If your rights have been terminated and not permanently  //      echo "It is not necessary to run this program again.\n";
442  //reinstated, you do not qualify to receive new licenses for the same  //      hor_line_thin();
443  //material under section 10.  //   }
444  //  //   else
445  //  9. Acceptance Not Required for Having Copies.  //   {
446  //  //      echo $completed . " thumbnail(s) were created.  Please run this program repeatedly again\n";
447  //  You are not required to accept this License in order to receive or  //      echo "until no more thumbnails are created.\n";
448  //run a copy of the Program.  Ancillary propagation of a covered work  //      hor_line_thin();
449  //occurring solely as a consequence of using peer-to-peer transmission  //   }
450  //to receive a copy likewise does not require acceptance.  However,  //--------------------------------------------------------------------------------
451  //nothing other than this License grants you permission to propagate or     echo CFG_PROGNAME . " execution ends.\n";
452  //modify any covered work.  These actions infringe copyright if you do     hor_line_thick();
453  //not accept this License.  Therefore, by modifying or propagating a  //--------------------------------------------------------------------------------
454  //covered work, you indicate your acceptance of this License to do so.  //End of File
455  //  //--------------------------------------------------------------------------------
456  //  10. Automatic Licensing of Downstream Recipients.  ?>
 //  
 //  Each time you convey a covered work, the recipient automatically  
 //receives a license from the original licensors, to run, modify and  
 //propagate that work, subject to this License.  You are not responsible  
 //for enforcing compliance by third parties with this License.  
 //  
 //  An "entity transaction" is a transaction transferring control of an  
 //organization, or substantially all assets of one, or subdividing an  
 //organization, or merging organizations.  If propagation of a covered  
 //work results from an entity transaction, each party to that  
 //transaction who receives a copy of the work also receives whatever  
 //licenses to the work the party's predecessor in interest had or could  
 //give under the previous paragraph, plus a right to possession of the  
 //Corresponding Source of the work from the predecessor in interest, if  
 //the predecessor has it or can get it with reasonable efforts.  
 //  
 //  You may not impose any further restrictions on the exercise of the  
 //rights granted or affirmed under this License.  For example, you may  
 //not impose a license fee, royalty, or other charge for exercise of  
 //rights granted under this License, and you may not initiate litigation  
 //(including a cross-claim or counterclaim in a lawsuit) alleging that  
 //any patent claim is infringed by making, using, selling, offering for  
 //sale, or importing the Program or any portion of it.  
 //  
 //  11. Patents.  
 //  
 //  A "contributor" is a copyright holder who authorizes use under this  
 //License of the Program or a work on which the Program is based.  The  
 //work thus licensed is called the contributor's "contributor version".  
 //  
 //  A contributor's "essential patent claims" are all patent claims  
 //owned or controlled by the contributor, whether already acquired or  
 //hereafter acquired, that would be infringed by some manner, permitted  
 //by this License, of making, using, or selling its contributor version,  
 //but do not include claims that would be infringed only as a  
 //consequence of further modification of the contributor version.  For  
 //purposes of this definition, "control" includes the right to grant  
 //patent sublicenses in a manner consistent with the requirements of  
 //this License.  
 //  
 //  Each contributor grants you a non-exclusive, worldwide, royalty-free  
 //patent license under the contributor's essential patent claims, to  
 //make, use, sell, offer for sale, import and otherwise run, modify and  
 //propagate the contents of its contributor version.  
 //  
 //  In the following three paragraphs, a "patent license" is any express  
 //agreement or commitment, however denominated, not to enforce a patent  
 //(such as an express permission to practice a patent or covenant not to  
 //sue for patent infringement).  To "grant" such a patent license to a  
 //party means to make such an agreement or commitment not to enforce a  
 //patent against the party.  
 //  
 //  If you convey a covered work, knowingly relying on a patent license,  
 //and the Corresponding Source of the work is not available for anyone  
 //to copy, free of charge and under the terms of this License, through a  
 //publicly available network server or other readily accessible means,  
 //then you must either (1) cause the Corresponding Source to be so  
 //available, or (2) arrange to deprive yourself of the benefit of the  
 //patent license for this particular work, or (3) arrange, in a manner  
 //consistent with the requirements of this License, to extend the patent  
 //license to downstream recipients.  "Knowingly relying" means you have  
 //actual knowledge that, but for the patent license, your conveying the  
 //covered work in a country, or your recipient's use of the covered work  
 //in a country, would infringe one or more identifiable patents in that  
 //country that you have reason to believe are valid.  
 //  
 //  If, pursuant to or in connection with a single transaction or  
 //arrangement, you convey, or propagate by procuring conveyance of, a  
 //covered work, and grant a patent license to some of the parties  
 //receiving the covered work authorizing them to use, propagate, modify  
 //or convey a specific copy of the covered work, then the patent license  
 //you grant is automatically extended to all recipients of the covered  
 //work and works based on it.  
 //  
 //  A patent license is "discriminatory" if it does not include within  
 //the scope of its coverage, prohibits the exercise of, or is  
 //conditioned on the non-exercise of one or more of the rights that are  
 //specifically granted under this License.  You may not convey a covered  
 //work if you are a party to an arrangement with a third party that is  
 //in the business of distributing software, under which you make payment  
 //to the third party based on the extent of your activity of conveying  
 //the work, and under which the third party grants, to any of the  
 //parties who would receive the covered work from you, a discriminatory  
 //patent license (a) in connection with copies of the covered work  
 //conveyed by you (or copies made from those copies), or (b) primarily  
 //for and in connection with specific products or compilations that  
 //contain the covered work, unless you entered into that arrangement,  
 //or that patent license was granted, prior to 28 March 2007.  
 //  
 //  Nothing in this License shall be construed as excluding or limiting  
 //any implied license or other defenses to infringement that may  
 //otherwise be available to you under applicable patent law.  
 //  
 //  12. No Surrender of Others' Freedom.  
 //  
 //  If conditions are imposed on you (whether by court order, agreement or  
 //otherwise) that contradict the conditions of this License, they do not  
 //excuse you from the conditions of this License.  If you cannot convey a  
 //covered work so as to satisfy simultaneously your obligations under this  
 //License and any other pertinent obligations, then as a consequence you may  
 //not convey it at all.  For example, if you agree to terms that obligate you  
 //to collect a royalty for further conveying from those to whom you convey  
 //the Program, the only way you could satisfy both those terms and this  
 //License would be to refrain entirely from conveying the Program.  
 //  
 //  13. Use with the GNU Affero General Public License.  
 //  
 //  Notwithstanding any other provision of this License, you have  
 //permission to link or combine any covered work with a work licensed  
 //under version 3 of the GNU Affero General Public License into a single  
 //combined work, and to convey the resulting work.  The terms of this  
 //License will continue to apply to the part which is the covered work,  
 //but the special requirements of the GNU Affero General Public License,  
 //section 13, concerning interaction through a network will apply to the  
 //combination as such.  
 //  
 //  14. Revised Versions of this License.  
 //  
 //  The Free Software Foundation may publish revised and/or new versions of  
 //the GNU General Public License from time to time.  Such new versions will  
 //be similar in spirit to the present version, but may differ in detail to  
 //address new problems or concerns.  
 //  
 //  Each version is given a distinguishing version number.  If the  
 //Program specifies that a certain numbered version of the GNU General  
 //Public License "or any later version" applies to it, you have the  
 //option of following the terms and conditions either of that numbered  
 //version or of any later version published by the Free Software  
 //Foundation.  If the Program does not specify a version number of the  
 //GNU General Public License, you may choose any version ever published  
 //by the Free Software Foundation.  
 //  
 //  If the Program specifies that a proxy can decide which future  
 //versions of the GNU General Public License can be used, that proxy's  
 //public statement of acceptance of a version permanently authorizes you  
 //to choose that version for the Program.  
 //  
 //  Later license versions may give you additional or different  
 //permissions.  However, no additional obligations are imposed on any  
 //author or copyright holder as a result of your choosing to follow a  
 //later version.  
 //  
 //  15. Disclaimer of Warranty.  
 //  
 //  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY  
 //APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT  
 //HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY  
 //OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,  
 //THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR  
 //PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM  
 //IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF  
 //ALL NECESSARY SERVICING, REPAIR OR CORRECTION.  
 //  
 //  16. Limitation of Liability.  
 //  
 //  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING  
 //WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS  
 //THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY  
 //GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE  
 //USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF  
 //DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD  
 //PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),  
 //EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF  
 //SUCH DAMAGES.  
 //  
 //  17. Interpretation of Sections 15 and 16.  
 //  
 //  If the disclaimer of warranty and limitation of liability provided  
 //above cannot be given local legal effect according to their terms,  
 //reviewing courts shall apply local law that most closely approximates  
 //an absolute waiver of all civil liability in connection with the  
 //Program, unless a warranty or assumption of liability accompanies a  
 //copy of the Program in return for a fee.  
 //  
 //                     END OF TERMS AND CONDITIONS  
 //  
 //            How to Apply These Terms to Your New Programs  
 //  
 //  If you develop a new program, and you want it to be of the greatest  
 //possible use to the public, the best way to achieve this is to make it  
 //free software which everyone can redistribute and change under these terms.  
 //  
 //  To do so, attach the following notices to the program.  It is safest  
 //to attach them to the start of each source file to most effectively  
 //state the exclusion of warranty; and each file should have at least  
 //the "copyright" line and a pointer to where the full notice is found.  
 //  
 //    <one line to give the program's name and a brief idea of what it does.>  
 //    Copyright (C) <year>  <name of author>  
 //  
 //    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 of the License, 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, see <http://www.gnu.org/licenses/>.  
 //  
 //Also add information on how to contact you by electronic and paper mail.  
 //  
 //  If the program does terminal interaction, make it output a short  
 //notice like this when it starts in an interactive mode:  
 //  
 //    <program>  Copyright (C) <year>  <name of author>  
 //    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.  
 //    This is free software, and you are welcome to redistribute it  
 //    under certain conditions; type `show c' for details.  
 //  
 //The hypothetical commands `show w' and `show c' should show the appropriate  
 //parts of the General Public License.  Of course, your program's commands  
 //might be different; for a GUI interface, you would use an "about box".  
 //  
 //  You should also get your employer (if you work as a programmer) or school,  
 //if any, to sign a "copyright disclaimer" for the program, if necessary.  
 //For more information on this, and how to apply and follow the GNU GPL, see  
 //<http://www.gnu.org/licenses/>.  
 //  
 //  The GNU General Public License does not permit incorporating your program  
 //into proprietary programs.  If your program is a subroutine library, you  
 //may consider it more useful to permit linking proprietary applications with  
 //the library.  If this is what you want to do, use the GNU Lesser General  
 //Public License instead of this License.  But first, please read  
 //<http://www.gnu.org/philosophy/why-not-lgpl.html>.  
 //-------------------------------------------------------------------------------------------------  
 //This program, a PHP script, creates thumbnail images for recognized  
 //image files in the current working directory.  This program is part of a  
 //3-program suite designed to collectively create a web page directly from  
 //digital camera files (and of course the web page can be customized by  
 //hand-editing after it is automatically generated).  The supported process for  
 //creating a web page involves 3 programs (rather than 1) primarily to circumvent  
 //the involuntary process termination that will occur in some shared environments  
 //if a process consumes too much CPU time.  
 //  
 //The 3 programs in the 3-program suite are:  
 //  
 //   filenames_canonize.php:  
 //      Converts all names of files in a directory to lower-case, and makes  
 //      substitutions for any unusual characters.  
 //  
 //   thumbnails_make.php (this program):  
 //      Creates thumbnails from recognized image types.  The thumbnails are  
 //      named relative to the original image file with the suffix "_small".  
 //      Only 20 files are converted on each invocation of the program, to  
 //      avoid the involuntary process termination that typically occurs in  
 //      a shared hosting environment when a process uses too much CPU time.  
 //      The program should be run repeatedly until it indicates that it has  
 //      no more thumbnails to create.  
 //  
 //      If any full-sized photos are modified, any corresponding thumbnails  
 //      should be deleted and thumbnails_make.php and indexfile_make.php should  
 //      be run again.  
 //  
 //   indexfile_make.php  
 //      Scans a directory and makes an index file ("index2.php") displaying  
 //      all the thumbnail images, each of which link to the corresponding  
 //      full-sized image.  The index file is tailored to Dave Ashley's  
 //      needs, but the created file can be edited and most of the content  
 //      pasted into an HTML file.  To avoid the accidental loss of  
 //      information, any existing "index2.php" file is renamed out of the  
 //      way.  
 //  
 //This script is designed to be run manually (rather than automatically invoked  
 //as a result of a web page request).  It was written in PHP for convenience  
 //simply because DreamHost (the web hosting company Dave Ashley uses) has as part  
 //of its hosting environment PHP with the ImageMagick library compiled in.  
 //  
 //Usually, this script is invoked using "php <path>/indexfile_make.php", but the  
 //method of invocation may vary based on computing platform details.  
 //--------------------------------------------------------------------------------  
 //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 of the License, 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.  
 //  
 //The GNU General Public License is reproduced below, and also is  
 //available at http://www.gnu.org/licenses/.  
 //--------------------------------------------------------------------------------  
 //                    GNU GENERAL PUBLIC LICENSE  
 //                       Version 3, 29 June 2007  
 //  
 // Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>  
 // Everyone is permitted to copy and distribute verbatim copies  
 // of this license document, but changing it is not allowed.  
 //  
 //                            Preamble  
 //  
 //   The GNU General Public License is a free, copyleft license for  
 // software and other kinds of works.  
 //  
 //   The licenses for most software and other practical works are designed  
 // to take away your freedom to share and change the works.  By contrast,  
 // the GNU General Public License is intended to guarantee your freedom to  
 // share and change all versions of a program--to make sure it remains free  
 // software for all its users.  We, the Free Software Foundation, use the  
 // GNU General Public License for most of our software; it applies also to  
 // any other work released this way by its authors.  You can apply it to  
 // your programs, too.  
 //  
 //   When we speak of free software, we are referring to freedom, not  
 // price.  Our General Public Licenses are designed to make sure that you  
 // have the freedom to distribute copies of free software (and charge for  
 // them if you wish), that you receive source code or can get it if you  
 // want it, that you can change the software or use pieces of it in new  
 // free programs, and that you know you can do these things.  
 //  
 //   To protect your rights, we need to prevent others from denying you  
 // these rights or asking you to surrender the rights.  Therefore, you have  
 // certain responsibilities if you distribute copies of the software, or if  
 // you modify it: responsibilities to respect the freedom of others.  
 //  
 //   For example, if you distribute copies of such a program, whether  
 // gratis or for a fee, you must pass on to the recipients the same  
 // freedoms that you received.  You must make sure that they, too, receive  
 // or can get the source code.  And you must show them these terms so they  
 // know their rights.  
 //  
 //   Developers that use the GNU GPL protect your rights with two steps:  
 // (1) assert copyright on the software, and (2) offer you this License  
 // giving you legal permission to copy, distribute and/or modify it.  
 //  
 //   For the developers' and authors' protection, the GPL clearly explains  
 // that there is no warranty for this free software.  For both users' and  
 // authors' sake, the GPL requires that modified versions be marked as  
 // changed, so that their problems will not be attributed erroneously to  
 // authors of previous versions.  
 //  
 //   Some devices are designed to deny users access to install or run  
 // modified versions of the software inside them, although the manufacturer  
 // can do so.  This is fundamentally incompatible with the aim of  
 // protecting users' freedom to change the software.  The systematic  
 // pattern of such abuse occurs in the area of products for individuals to  
 // use, which is precisely where it is most unacceptable.  Therefore, we  
 // have designed this version of the GPL to prohibit the practice for those  
 // products.  If such problems arise substantially in other domains, we  
 // stand ready to extend this provision to those domains in future versions  
 // of the GPL, as needed to protect the freedom of users.  
 //  
 //   Finally, every program is threatened constantly by software patents.  
 // States should not allow patents to restrict development and use of  
 // software on general-purpose computers, but in those that do, we wish to  
 // avoid the special danger that patents applied to a free program could  
 // make it effectively proprietary.  To prevent this, the GPL assures that  
 // patents cannot be used to render the program non-free.  
 //  
 //   The precise terms and conditions for copying, distribution and  
 // modification follow.  
 //  
 //                       TERMS AND CONDITIONS  
 //  
 //   0. Definitions.  
 //  
 //   "This License" refers to version 3 of the GNU General Public License.  
 //  
 //   "Copyright" also means copyright-like laws that apply to other kinds of  
 // works, such as semiconductor masks.  
 //  
 //   "The Program" refers to any copyrightable work licensed under this  
 // License.  Each licensee is addressed as "you".  "Licensees" and  
 // "recipients" may be individuals or organizations.  
 //  
 //   To "modify" a work means to copy from or adapt all or part of the work  
 // in a fashion requiring copyright permission, other than the making of an  
 // exact copy.  The resulting work is called a "modified version" of the  
 // earlier work or a work "based on" the earlier work.  
 //  
 //   A "covered work" means either the unmodified Program or a work based  
 // on the Program.  
 //  
 //   To "propagate" a work means to do anything with it that, without  
 // permission, would make you directly or secondarily liable for  
 // infringement under applicable copyright law, except executing it on a  
 // computer or modifying a private copy.  Propagation includes copying,  
 // distribution (with or without modification), making available to the  
 // public, and in some countries other activities as well.  
 //  
 //   To "convey" a work means any kind of propagation that enables other  
 // parties to make or receive copies.  Mere interaction with a user through  
 // a computer network, with no transfer of a copy, is not conveying.  
 //  
 //   An interactive user interface displays "Appropriate Legal Notices"  
 // to the extent that it includes a convenient and prominently visible  
 // feature that (1) displays an appropriate copyright notice, and (2)  
 // tells the user that there is no warranty for the work (except to the  
 // extent that warranties are provided), that licensees may convey the  
 // work under this License, and how to view a copy of this License.  If  
 // the interface presents a list of user commands or options, such as a  
 // menu, a prominent item in the list meets this criterion.  
 //  
 //   1. Source Code.  
 //  
 //   The "source code" for a work means the preferred form of the work  
 // for making modifications to it.  "Object code" means any non-source  
 // form of a work.  
 //  
 //   A "Standard Interface" means an interface that either is an official  
 // standard defined by a recognized standards body, or, in the case of  
 // interfaces specified for a particular programming language, one that  
 // is widely used among developers working in that language.  
 //  
 //   The "System Libraries" of an executable work include anything, other  
 // than the work as a whole, that (a) is included in the normal form of  
 // packaging a Major Component, but which is not part of that Major  
 // Component, and (b) serves only to enable use of the work with that  
 // Major Component, or to implement a Standard Interface for which an  
 // implementation is available to the public in source code form.  A  
 // "Major Component", in this context, means a major essential component  
 // (kernel, window system, and so on) of the specific operating system  
 // (if any) on which the executable work runs, or a compiler used to  
 // produce the work, or an object code interpreter used to run it.  
 //  
 //   The "Corresponding Source" for a work in object code form means all  
 // the source code needed to generate, install, and (for an executable  
 // work) run the object code and to modify the work, including scripts to  
 // control those activities.  However, it does not include the work's  
 // System Libraries, or general-purpose tools or generally available free  
 // programs which are used unmodified in performing those activities but  
 // which are not part of the work.  For example, Corresponding Source  
 // includes interface definition files associated with source files for  
 // the work, and the source code for shared libraries and dynamically  
 // linked subprograms that the work is specifically designed to require,  
 // such as by intimate data communication or control flow between those  
 // subprograms and other parts of the work.  
 //  
 //   The Corresponding Source need not include anything that users  
 // can regenerate automatically from other parts of the Corresponding  
 // Source.  
 //  
 //   The Corresponding Source for a work in source code form is that  
 // same work.  
 //  
 //   2. Basic Permissions.  
 //  
 //   All rights granted under this License are granted for the term of  
 // copyright on the Program, and are irrevocable provided the stated  
 // conditions are met.  This License explicitly affirms your unlimited  
 // permission to run the unmodified Program.  The output from running a  
 // covered work is covered by this License only if the output, given its  
 // content, constitutes a covered work.  This License acknowledges your  
 // rights of fair use or other equivalent, as provided by copyright law.  
 //  
 //   You may make, run and propagate covered works that you do not  
 // convey, without conditions so long as your license otherwise remains  
 // in force.  You may convey covered works to others for the sole purpose  
 // of having them make modifications exclusively for you, or provide you  
 // with facilities for running those works, provided that you comply with  
 // the terms of this License in conveying all material for which you do  
 // not control copyright.  Those thus making or running the covered works  
 // for you must do so exclusively on your behalf, under your direction  
 // and control, on terms that prohibit them from making any copies of  
 // your copyrighted material outside their relationship with you.  
 //  
 //   Conveying under any other circumstances is permitted solely under  
 // the conditions stated below.  Sublicensing is not allowed; section 10  
 // makes it unnecessary.  
 //  
 //   3. Protecting Users' Legal Rights From Anti-Circumvention Law.  
 //  
 //   No covered work shall be deemed part of an effective technological  
 // measure under any applicable law fulfilling obligations under article  
 // 11 of the WIPO copyright treaty adopted on 20 December 1996, or  
 // similar laws prohibiting or restricting circumvention of such  
 // measures.  
 //  
 //   When you convey a covered work, you waive any legal power to forbid  
 // circumvention of technological measures to the extent such circumvention  
 // is effected by exercising rights under this License with respect to  
 // the covered work, and you disclaim any intention to limit operation or  
 // modification of the work as a means of enforcing, against the work's  
 // users, your or third parties' legal rights to forbid circumvention of  
 // technological measures.  
 //  
 //   4. Conveying Verbatim Copies.  
 //  
 //   You may convey verbatim copies of the Program's source code as you  
 // receive it, in any medium, provided that you conspicuously and  
 // appropriately publish on each copy an appropriate copyright notice;  
 // keep intact all notices stating that this License and any  
 // non-permissive terms added in accord with section 7 apply to the code;  
 // keep intact all notices of the absence of any warranty; and give all  
 // recipients a copy of this License along with the Program.  
 //  
 //   You may charge any price or no price for each copy that you convey,  
 // and you may offer support or warranty protection for a fee.  
 //  
 //   5. Conveying Modified Source Versions.  
 //  
 //   You may convey a work based on the Program, or the modifications to  
 // produce it from the Program, in the form of source code under the  
 // terms of section 4, provided that you also meet all of these conditions:  
 //  
 //     a) The work must carry prominent notices stating that you modified  
 //     it, and giving a relevant date.  
 //  
 //     b) The work must carry prominent notices stating that it is  
 //     released under this License and any conditions added under section  
 //     7.  This requirement modifies the requirement in section 4 to  
 //     "keep intact all notices".  
 //  
 //     c) You must license the entire work, as a whole, under this  
 //     License to anyone who comes into possession of a copy.  This  
 //     License will therefore apply, along with any applicable section 7  
 //     additional terms, to the whole of the work, and all its parts,  
 //     regardless of how they are packaged.  This License gives no  
 //     permission to license the work in any other way, but it does not  
 //     invalidate such permission if you have separately received it.  
 //  
 //     d) If the work has interactive user interfaces, each must display  
 //     Appropriate Legal Notices; however, if the Program has interactive  
 //     interfaces that do not display Appropriate Legal Notices, your  
 //     work need not make them do so.  
 //  
 //   A compilation of a covered work with other separate and independent  
 // works, which are not by their nature extensions of the covered work,  
 // and which are not combined with it such as to form a larger program,  
 // in or on a volume of a storage or distribution medium, is called an  
 // "aggregate" if the compilation and its resulting copyright are not  
 // used to limit the access or legal rights of the compilation's users  
 // beyond what the individual works permit.  Inclusion of a covered work  
 // in an aggregate does not cause this License to apply to the other  
 // parts of the aggregate.  
 //  
 //   6. Conveying Non-Source Forms.  
 //  
 //   You may convey a covered work in object code form under the terms  
 // of sections 4 and 5, provided that you also convey the  
 // machine-readable Corresponding Source under the terms of this License,  
 // in one of these ways:  
 //  
 //     a) Convey the object code in, or embodied in, a physical product  
 //     (including a physical distribution medium), accompanied by the  
 //     Corresponding Source fixed on a durable physical medium  
 //     customarily used for software interchange.  
 //  
 //     b) Convey the object code in, or embodied in, a physical product  
 //     (including a physical distribution medium), accompanied by a  
 //     written offer, valid for at least three years and valid for as  
 //     long as you offer spare parts or customer support for that product  
 //     model, to give anyone who possesses the object code either (1) a  
 //     copy of the Corresponding Source for all the software in the  
 //     product that is covered by this License, on a durable physical  
 //     medium customarily used for software interchange, for a price no  
 //     more than your reasonable cost of physically performing this  
 //     conveying of source, or (2) access to copy the  
 //     Corresponding Source from a network server at no charge.  
 //  
 //     c) Convey individual copies of the object code with a copy of the  
 //     written offer to provide the Corresponding Source.  This  
 //     alternative is allowed only occasionally and noncommercially, and  
 //     only if you received the object code with such an offer, in accord  
 //     with subsection 6b.  
 //  
 //     d) Convey the object code by offering access from a designated  
 //     place (gratis or for a charge), and offer equivalent access to the  
 //     Corresponding Source in the same way through the same place at no  
 //     further charge.  You need not require recipients to copy the  
 //     Corresponding Source along with the object code.  If the place to  
 //     copy the object code is a network server, the Corresponding Source  
 //     may be on a different server (operated by you or a third party)  
 //     that supports equivalent copying facilities, provided you maintain  
 //     clear directions next to the object code saying where to find the  
 //     Corresponding Source.  Regardless of what server hosts the  
 //     Corresponding Source, you remain obligated to ensure that it is  
 //     available for as long as needed to satisfy these requirements.  
 //  
 //     e) Convey the object code using peer-to-peer transmission, provided  
 //     you inform other peers where the object code and Corresponding  
 //     Source of the work are being offered to the general public at no  
 //     charge under subsection 6d.  
 //  
 //   A separable portion of the object code, whose source code is excluded  
 // from the Corresponding Source as a System Library, need not be  
 // included in conveying the object code work.  
 //  
 //   A "User Product" is either (1) a "consumer product", which means any  
 // tangible personal property which is normally used for personal, family,  
 // or household purposes, or (2) anything designed or sold for incorporation  
 // into a dwelling.  In determining whether a product is a consumer product,  
 // doubtful cases shall be resolved in favor of coverage.  For a particular  
 // product received by a particular user, "normally used" refers to a  
 // typical or common use of that class of product, regardless of the status  
 // of the particular user or of the way in which the particular user  
 // actually uses, or expects or is expected to use, the product.  A product  
 // is a consumer product regardless of whether the product has substantial  
 // commercial, industrial or non-consumer uses, unless such uses represent  
 // the only significant mode of use of the product.  
 //  
 //   "Installation Information" for a User Product means any methods,  
 // procedures, authorization keys, or other information required to install  
 // and execute modified versions of a covered work in that User Product from  
 // a modified version of its Corresponding Source.  The information must  
 // suffice to ensure that the continued functioning of the modified object  
 // code is in no case prevented or interfered with solely because  
 // modification has been made.  
 //  
 //   If you convey an object code work under this section in, or with, or  
 // specifically for use in, a User Product, and the conveying occurs as  
 // part of a transaction in which the right of possession and use of the  
 // User Product is transferred to the recipient in perpetuity or for a  
 // fixed term (regardless of how the transaction is characterized), the  
 // Corresponding Source conveyed under this section must be accompanied  
 // by the Installation Information.  But this requirement does not apply  
 // if neither you nor any third party retains the ability to install  
 // modified object code on the User Product (for example, the work has  
 // been installed in ROM).  
 //  
 //   The requirement to provide Installation Information does not include a  
 // requirement to continue to provide support service, warranty, or updates  
 // for a work that has been modified or installed by the recipient, or for  
 // the User Product in which it has been modified or installed.  Access to a  
 // network may be denied when the modification itself materially and  
 // adversely affects the operation of the network or violates the rules and  
 // protocols for communication across the network.  
 //  
 //   Corresponding Source conveyed, and Installation Information provided,  
 // in accord with this section must be in a format that is publicly  
 // documented (and with an implementation available to the public in  
 // source code form), and must require no special password or key for  
 // unpacking, reading or copying.  
 //  
 //   7. Additional Terms.  
 //  
 //   "Additional permissions" are terms that supplement the terms of this  
 // License by making exceptions from one or more of its conditions.  
 // Additional permissions that are applicable to the entire Program shall  
 // be treated as though they were included in this License, to the extent  
 // that they are valid under applicable law.  If additional permissions  
 // apply only to part of the Program, that part may be used separately  
 // under those permissions, but the entire Program remains governed by  
 // this License without regard to the additional permissions.  
 //  
 //   When you convey a copy of a covered work, you may at your option  
 // remove any additional permissions from that copy, or from any part of  
 // it.  (Additional permissions may be written to require their own  
 // removal in certain cases when you modify the work.)  You may place  
 // additional permissions on material, added by you to a covered work,  
 // for which you have or can give appropriate copyright permission.  
 //  
 //   Notwithstanding any other provision of this License, for material you  
 // add to a covered work, you may (if authorized by the copyright holders of  
 // that material) supplement the terms of this License with terms:  
 //  
 //     a) Disclaiming warranty or limiting liability differently from the  
 //     terms of sections 15 and 16 of this License; or  
 //  
 //     b) Requiring preservation of specified reasonable legal notices or  
 //     author attributions in that material or in the Appropriate Legal  
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 //   All other non-permissive additional terms are considered "further  
 // restrictions" within the meaning of section 10.  If the Program as you  
 // received it, or any part of it, contains a notice stating that it is  
 // governed by this License along with a term that is a further  
 // restriction, you may remove that term.  If a license document contains  
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 //   You may not propagate or modify a covered work except as expressly  
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 //   11. Patents.  
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 //   A "contributor" is a copyright holder who authorizes use under this  
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 //  
 //   If you convey a covered work, knowingly relying on a patent license,  
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 // consistent with the requirements of this License, to extend the patent  
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 // actual knowledge that, but for the patent license, your conveying the  
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 // author or copyright holder as a result of your choosing to follow a  
 // later version.  
 //  
 //   15. Disclaimer of Warranty.  
 //  
 //   THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY  
 // APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT  
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 // WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS  
 // THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY  
 // GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE  
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 // DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD  
 // PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),  
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 //  
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 // Program, unless a warranty or assumption of liability accompanies a  
 // copy of the Program in return for a fee.  
 //--------------------------------------------------------------------------------  
 //C O N F I G U R A T I O N  
 //--------------------------------------------------------------------------------  
 //Configuration switch combinations were not tested.  E-mail me any program  
 //corrections (dashley@gmail.com).  
 define ("CFG_PROGNAME", "indexfile_make.php");  
    //Program name.  
 define ("CFG_CONSOLE_STD_LINE_LEN", 78);  
    //Number of characters per line preferred for console output.  
 define ("CFG_THUMBNAIL_FILENAME_SUFFIX", "_small");  
    //String added just before the filename extension to choose thumbnail names  
    //based on name of full-sized image.  
 define ("CFG_INDEXFILE_NAME", "index2.php");  
    //Name of the file containing the index.  PHP code is assumed, but the  
    //file can be harvested for the HTML.  
 define ("CFG_INDEXFILE_PICREF_INDENT", 3);  
    //The number of spaces to indent each reference to a picture.  
 define ("CFG_FILEEXTENSIONS_PHOTO", "jpg/jpeg");  
    //The file extensions that will be recognized as photos.  
 define ("CFG_FILEEXTENSIONS_LINK", "mov");  
    //File extensions that will be linked to.  All others will be mentioned  
    //in the generated output but not linked to.  
 //--------------------------------------------------------------------------------  
 //Repeats a character to the console output a certain number of times.  
 function rep_char_con($c, $n)  
 {  
    while ($n--)  
       echo $c;  
 }  
 //--------------------------------------------------------------------------------  
 //Writes a standard thick horizontal line to the console.  
 function hor_line_thick()  
 {  
    rep_char_con("=", CFG_CONSOLE_STD_LINE_LEN);  
    echo "\n";  
 }  
 //--------------------------------------------------------------------------------  
 //Writes a standard thin horizontal line to the console.  
 function hor_line_thin()  
 {  
    rep_char_con("-", CFG_CONSOLE_STD_LINE_LEN);  
    echo "\n";  
 }  
 //--------------------------------------------------------------------------------  
 //Returns an array of all files in the working directory.  
 //If no files can be found, returns FALSE.  
 function get_file_names_in_dir()  
 {  
    //Get directory list.  
    $rv = scandir (".");  
   
    //If the list is empty, something went wrong.  Return FALSE.  
    if ($rv === FALSE)  
       return FALSE;  
   
    return $rv;  
 }  
 //--------------------------------------------------------------------------------  
 //Accepts a non-negative integer as an integer or a string.  Adds commas in the  
 //right places to make it more human readable.  
 function int_nonneg_commanate($in_ui)  
 {  
    //Ensure the integer is an integer from PHP's point of view.  
    $in_ui = (int)$in_ui;  
   
    //If a negative number was passed in, clip it.  
    if ($in_ui < 0)  
       $in_ui = 0;  
   
    //Make a proper numerical string with commas out of it.  
    $s_ui = number_format($in_ui);  
   
    return $s_ui;  
 }  
 //--------------------------------------------------------------------------------  
 //Returns TRUE if a file name appears to be a valid full-sized image name,  
 //or FALSE otherwise.  
 function is_full_sized_image_file_name($in_filename)  
 {  
    //Convert the string name to all lower case.  This will do for  
    //comparisons and tests.  
    $s = strtolower($s);  
   
    //Attempt to split the name into a base and an extension.  Any failure  
    //means it is an unsuitable name.  
    $extension_start = strrpos($in_filename, ".");  
       //Find position of last "." in string.  This should precede the  
       //file extension.  
   
    if ($extension_start === FALSE)  
    {  
       //Bad name.  Unsuitable.  
       return FALSE;  
    }  
   
    //Calculate the base and extension.  
    $filename_base    = substr($in_filename, 0, $extension_start);  
    $filename_extension = substr($in_filename, $extension_start + 1);  
   
    //If the extension is neither "jpg" nor "jpeg", it is unsuitable.  
    if (($filename_extension != "jpg") && ($filename_extension != "jpeg"))  
       return FALSE;  
   
    //If the filename base is empty, the filename is unsuitable.  
    if (strlen($filename_base) == 0)  
       return FALSE;  
   
    //If the last characters of the base are the CFG_THUMBNAIL_FILENAME_SUFFIX,  
    //the name is unsuitable.  
    if (strlen($filename_base) >= strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))  
    {  
       if (substr($filename_base, strlen($filename_base) - strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))  
           == CFG_THUMBNAIL_FILENAME_SUFFIX)  
          return FALSE;  
    }  
   
    //Looks good.  
    return TRUE;  
 }  
 //--------------------------------------------------------------------------------  
 //As a function of the file name, creates the file name for the thumbnail.  
 function file_name_to_thumbnail_name($in_filename)  
 {  
    $extension_start = strrpos($in_filename, ".");  
       //Find position of last "." in string.  This should precede the  
       //file extension.  
    if ($extension_start === FALSE)  
    {  
       //"." not found.  Should not happen.  Filenames were checked in advance.  
       echo "Fatal internal error at line " . __LINE__ . "\n";  
       exit(1);  
    }  
   
    $filename_prefix    = substr($in_filename, 0, $extension_start);  
    $filename_extension = substr($in_filename, $extension_start);  
   
    $rv = $filename_prefix . CFG_THUMBNAIL_FILENAME_SUFFIX . $filename_extension;  
   
    return $rv;  
 }  
 //--------------------------------------------------------------------------------  
 //Writes the index file preamble to the index file.  This is very much  
 //dependent on how the thumbnails will be used.  This is currently customized  
 //for what Dave Ashley does.  
 function write_index_file_preamble($handle, $idstring)  
 {  
    fwrite($handle, "<" . "?" . "php\n");  
    fwrite($handle, "require_once(\"style/std/stdwpstyle.inc\");\n");  
    fwrite($handle, "?" . ">" . "\n");  
    fwrite($handle, "<" . "?" . "php\n");  
    fwrite($handle, "   $" . "thispage = new StdWpStyle();\n");  
    fwrite($handle, "\n");  
    fwrite($handle, "   $" . "thispage->static_page_header_title_std(\"" . $idstring . "\",\n");  
    fwrite($handle, "                                           \"" . $idstring . "\",\n");  
    fwrite($handle, "                                           \"\");\n");  
    fwrite($handle, "   $" . "thispage->static_page_photo_thumbnail_explanation(TRUE, TRUE);\n");  
    fwrite($handle, "?" . ">" . "\n");  
    for ($i = 0; $i < CFG_INDEX_PARAGRAPH_INDENT; $i++)  
    {  
       fwrite($handle, " ");  
    }  
    fwrite($handle, "\n<p align=\"center\">\n");  
 }  
 //--------------------------------------------------------------------------------  
 //Writes the index file postamble to the index file.  This is very much  
 //dependent on how the thumbnails will be used.  This is currently customized  
 //for what Dave Ashley does.  
 function write_index_file_postamble($handle)  
 {  
    for ($i = 0; $i < CFG_INDEX_PARAGRAPH_INDENT; $i++)  
    {  
       fwrite($handle, " ");  
    }  
    fwrite($handle, "</p>\n\n");  
    fwrite($handle, "<" . "?" . "php\n");  
    fwrite($handle, "   $" . "thispage->static_page_footer_std();\n");  
    fwrite($handle, "?" . ">" . "\n");  
 }  
 //--------------------------------------------------------------------------------  
 //Writes a line to the index file corresponding to a linked larger picture  
 //reprsented by a thumbnail.  
 function write_index_line(  $handle,  
                             $filename,  
                             $thumbnailname,  
                             $filename_filesize,  
                             $filename_xdim,  
                             $filename_ydim,  
                             $thumbnailname_filesize,  
                             $thumbnailname_xdim,  
                             $thumbnailname_ydim)  
 {  
 //<a href="dscn1258.jpg"><img border="0" src="dscn1258_small.jpg" alt="dscn1258.jpg (4932338 bytes)" width="125" height="93"></a>  
    //Indent.  
    for ($i = 0; $i < CFG_INDEX_LINK_INDENT; $i++)  
    {  
       fwrite($handle, " ");  
    }  
   
    fwrite($handle, "<a href=\"");  
    fwrite($handle, $filename);  
    fwrite($handle, "\"><img border=\"0\" src=\"");  
    fwrite($handle, $thumbnailname);  
    fwrite($handle, "\" alt=\"");  
    fwrite($handle, $filename);  
    fwrite($handle, " (");  
    fwrite($handle, int_nonneg_commanate($filename_filesize));  
    fwrite($handle, " bytes)\" ");  
    fwrite($handle, "title=\"");  
    fwrite($handle, $filename);  
    fwrite($handle, " (");  
    fwrite($handle, int_nonneg_commanate($filename_filesize));  
    fwrite($handle, " bytes)\" width=\"");  
    fwrite($handle, $thumbnailname_xdim);  
    fwrite($handle, "\" height=\"");  
    fwrite($handle, $thumbnailname_ydim);  
    fwrite($handle, "\"></a>");  
    fwrite($handle, "\n");  
 }  
 //--------------------------------------------------------------------------------  
    //Write introductory message.  
    hor_line_thick();  
    echo CFG_PROGNAME . " Copyright (C) 2015 David T. Ashley\n";  
    echo "This program comes with ABSOLUTELY NO WARRANTY; and is licensed under\n";  
    echo "the GNU General Public License, Version 3.  A copy of this license is\n";  
    echo "provided in the source code of this program.\n";  
    hor_line_thin();  
    //-----------------------------------------------------------------------------  
    //Get the date, time, and PID strings that will be used for the rest of the  
    //script.  
    $scr_datestring = date("Ymd_His");  
    $scr_pid        = getmypid();  
    if ($scr_pid === FALSE)  
       $scr_pid = 0;  
    //-----------------------------------------------------------------------------  
    //If the index file exists, rename it out of the way.  This is to prevent  
    //the loss of information.  
    if (file_exists(CFG_INDEXFILE_NAME))  
    {  
       rename(CFG_INDEXFILE_NAME, $scr_datestring . "_" . $scr_pid . ".php");  
    }        
    //-----------------------------------------------------------------------------  
    //Open the index file and write the preamble.  
    $indexfile_handle = fopen(CFG_INDEXFILE_NAME, "w");  
    if ($indexfile_handle === FALSE)  
    {  
       echo "FATAL:  unable to open index file.\n";  
       exit(1);  
    }  
    write_index_file_preamble($indexfile_handle, $scr_datestring . "_" . $scr_pid);  
    //-----------------------------------------------------------------------------  
    //Get and emit the names of everything in the directory.  
    $file_list = get_file_names_in_dir();  
    if ($file_list === FALSE)  
    {  
       echo "List of files from PHP function scandir() is empty.\n";  
       echo "Serious internal error, or nothing to do.  Script cannot continue.\n";  
       hor_line_thick();  
       exit(1);  
    }  
    else  
    {  
      echo "Files in working directory (unsorted, unfiltered, "  
           .  
           count($file_list)  
           .  
           " files):\n";  
      for ($i = 0; $i < count($file_list); $i++)  
         echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";  
    }  
    hor_line_thin();  
    //-----------------------------------------------------------------------------  
    //Remove the standard directory entries "." and ".." from the list, and  
    //remove any directories.  
    $temp_list = $file_list;  
    unset($file_list);  
    $n = 0;  
    for ($i = 0; $i < count($temp_list); $i++)  
    {  
       //echo "Checking " . $temp_list[$i] . "\n";  
   
       if (strcmp($temp_list[$i], ".") == 0)  
       {  
          //. entry, not a file.  
       }  
       else if (strcmp($temp_list[$i], "..") == 0)  
       {  
          //.. entry, not a file.  
       }  
       else if (is_file($temp_list[$i]))  
       {  
          //This is a regular file.  
          $file_list[] = $temp_list[$i];  
          $n++;  
       }  
    }  
     
    if ($n == 0)  
       $file_list = FALSE;  
   
    unset($n);  
    unset($temp_list);  
    //-----------------------------------------------------------------------------  
    //If there is nothing to do, end the script.  
    if ($file_list === FALSE)  
    {  
       echo "No files to process.\n";  
       hor_line_thick();  
       exit(0);  
    }  
    //-----------------------------------------------------------------------------  
    //Sort the list.  This is a non-event.  The only rationale for sorting is that  
    //it ensures that the same set of files will be processed in the same order,  
    //regardless of the order provided by the underlying OS internals.  
    sort($file_list);  
    //-----------------------------------------------------------------------------  
    //Emit the names we now have.  
    echo "Files in working directory (directory entries removed, sorted, "  
         .  
         count($file_list)  
         .  
         " files):\n";  
    for ($i = 0; $i < count($file_list); $i++)  
       echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";  
    hor_line_thin();  
   
    //-----------------------------------------------------------------------------  
    //For each file in the list, process it.  There are different processing  
    //actions for each one.  
    for ($i = 0; $i < count($file_list); $i++)  
    {  
       if (is_full_sized_image_file_name($file_list[$i]))  
       {  
          $thumbnail_name = file_name_to_thumbnail_name($file_list[$i]);  
   
          $image_data = getimagesize($file_list[$i]);  
          $thumbnail_data = getimagesize($thumbnail_name);  
   
          write_index_line(  $indexfile_handle,  
                             $file_list[$i],  
                             $thumbnail_name,  
                             filesize($file_list[$i]),  
                             $image_data[0],  
                             $image_data[1],  
                             filesize($thumbnail_name),  
                             $thumbnail_data[0],  
                             $thumbnail_data[1]);  
   
       }  
    }  
   
    //-----------------------------------------------------------------------------  
    //Complete and close up the index file.  
    write_index_file_postamble($indexfile_handle);  
    fclose($indexfile_handle);  
   
 //   $i         = 0;  
 //   $completed = 0;  
 //   while (($completed < CFG_MAX_THUMBNAILS_PER_INVOCATION) && ($i < count($file_list)))  
 //   {  
 //      if (is_full_sized_image_file_name($file_list[$i]))  
 //      {  
 //         $thumbnail_name = file_name_to_thumbnail_name($file_list[$i]);  
 //  
 //         if (file_exists($thumbnail_name))  
 //         {  
 //            echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping because corresponding thumbnail exists.\n";  
 //            hor_line_thin();  
 //         }  
 //         else  
 //         {  
 //            echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : creating thumbnail.\n";  
 //  
 //            echo "Creating thumbnail \"" .  
 //                 $thumbnail_name .  
 //                 "\" from image \"" .  
 //                 $file_list[$i] .  
 //                 "\".\n";  
 //  
 //            create_thumbnail($file_list[$i],  
 //                             $thumbnail_name,  
 //                             $filename_filesize,  
 //                             $filename_xdim,  
 //                             $filename_ydim,  
 //                             $thumbnail_filesize,  
 //                             $thumbnail_xdim,  
 //                             $thumbnail_ydim);  
 //  
 //            echo "Conversion complete.\n";  
 //            echo "   Full-sized image file size/xdim/ydim = " .  
 //                 $filename_filesize . "/" . $filename_xdim . "/" . $filename_ydim .  
 //                 ",\n";  
 //            echo "   Thumbnail image  filesize/xdim/ydim = " .  
 //                 $thumbnail_filesize . "/" . $thumbnail_xdim . "/" . $thumbnail_ydim .  
 //                 ",\n";  
 //  
 //            hor_line_thin();  
 //            $completed++;  
 //         }  
 //      }  
 //      else  
 //      {  
 //         //Unsuitable base name.  Can't use it.  
 //         echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping due to unsuitable name.\n";  
 //         hor_line_thin();  
 //      }  
 //  
 //      $i++;  
 //   }  
 //  
 //   //Emit a message about whether the program should be run again.  I am aware of  
 //   //the uncovered case--where the last thumbnail was made on the last iteration  
 //   //of this invocation--but I will leave it uncovered for now.  All that happens  
 //   //is the user runs the program unnecessarily one more time.  
 //   if ($completed == 0)  
 //   {  
 //      echo "No thumbnails were created--this program is done creating thumbnails.\n";  
 //      echo "It is not necessary to run this program again.\n";  
 //      hor_line_thin();  
 //   }  
 //   else  
 //   {  
 //      echo $completed . " thumbnail(s) were created.  Please run this program repeatedly again\n";  
 //      echo "until no more thumbnails are created.\n";  
 //      hor_line_thin();  
 //   }  
 //--------------------------------------------------------------------------------  
    echo CFG_PROGNAME . " execution ends.\n";  
    hor_line_thick();  
 //--------------------------------------------------------------------------------  
 //End of File  
 //--------------------------------------------------------------------------------  
 ?>  

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