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projs/trunk/projs/20161008_web_page_thumbnail_make/thumbnails_make.php revision 46 by dashley, Fri Oct 14 02:17:12 2016 UTC projs/dtats/trunk/projs/20161008_web_page_thumbnail_make/thumbnails_make.php revision 110 by dashley, Sat Dec 31 19:42:04 2016 UTC
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1  <?php  <?php
2  //--------------------------------------------------------------------------------  //-------------------------------------------------------------------------------------------------
3  //thumbnails_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", "thumbnails_make.php");
31  //     //Number of characters per line preferred for console output.
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_DIMENSION_MAX", 125);
35  //them if you wish), that you receive source code or can get it if you     //The maximum dimension of the created thumbnails.  Thumbnails are sized so
36  //want it, that you can change the software or use pieces of it in new     //that the longest dimension is this many pixels.
37  //free programs, and that you know you can do these things.  define ("CFG_THUMBNAIL_BEVELED_BORDER_WIDTH", 4);
38  //     //The number of pixels that the thumbnail beveled borders should be.
39  //  To protect your rights, we need to prevent others from denying you  define ("CFG_THUMBNAIL_FILENAME_SUFFIX", "_small");
40  //these rights or asking you to surrender the rights.  Therefore, you have     //String added just before the filename extension to choose thumbnail names
41  //certain responsibilities if you distribute copies of the software, or if     //based on name of full-sized image.
42  //you modify it: responsibilities to respect the freedom of others.  define ("CFG_LANCZOS_FILTER_APPLY", FALSE);
43  //     //TRUE if should apply the Lanczos filter when making the thumbnail, FALSE
44  //  For example, if you distribute copies of such a program, whether     //otherwise.  I have no idea if using a Lanczos filter improves the quality
45  //gratis or for a fee, you must pass on to the recipients the same     //of the thumbnails, but the filter was applied in the PHP example I found
46  //freedoms that you received.  You must make sure that they, too, receive     //online.  Applying the Lanczos filter typically adds a few seconds to the
47  //or can get the source code.  And you must show them these terms so they     //time required to create each thumbnail.
48  //know their rights.  define ("CFG_MAX_THUMBNAILS_PER_INVOCATION", 20);
49  //     //The maximum number of thumbnails that should be created per invocation.
50  //  Developers that use the GNU GPL protect your rights with two steps:     //This is to prevent the program from being involuntarily terminated
51  //(1) assert copyright on the software, and (2) offer you this License     //for taking too much CPU time.
52  //giving you legal permission to copy, distribute and/or modify it.  //--------------------------------------------------------------------------------
53  //  //Calculates important integer indices related to creating a thumbnail, in order
54  //  For the developers' and authors' protection, the GPL clearly explains  //to minimize distortion in the thumbnail.
55  //that there is no warranty for this free software.  For both users' and  //
56  //authors' sake, the GPL requires that modified versions be marked as  //When creating a thumbnail, the longer side may be relatively short (perhaps
57  //changed, so that their problems will not be attributed erroneously to  //100 pixels), and the shorter side may be even shorter (perhaps even as short
58  //authors of previous versions.  //as 10 pixels).  If the dimensions of the original image were not changed,
59  //  //converting the image to a thumbnail may result in distortion of up to about
60  //  Some devices are designed to deny users access to install or run  //one percent.  As an example, suppose that a 1600 x 900 image is converted to a
61  //modified versions of the software inside them, although the manufacturer  //thumbnail with the longer side of 125 pixels.  The ideal dimension for the
62  //can do so.  This is fundamentally incompatible with the aim of  //shorter side would be (900/1600) * 125 = 70.3125 pixels.  The aspect ratio of
63  //protecting users' freedom to change the software.  The systematic  //the thumbnail can't be made to match the aspect ratio of the original image.
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  //To avoid any aspect ratio distortion that might be noticeable, this program
66  //have designed this version of the GPL to prohibit the practice for those  //chooses the shorter dimension for the thumbnail that is the ceiling of the actual
67  //products.  If such problems arise substantially in other domains, we  //quotient, then crops the longer dimension of the original image before the
68  //stand ready to extend this provision to those domains in future versions  //conversion to try and match the aspect ratios as closely as possible.
69  //of the GPL, as needed to protect the freedom of users.  //
70  //  //In the example a paragraph or two above, the shorter side of the thumbnail
71  //  Finally, every program is threatened constantly by software patents.  //would be chosen to be 71 pixels.
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  //Once this choice is made, we want to trim the original image before conversion
74  //avoid the special danger that patents applied to a free program could  //so that n/900 is as close as possible to 125/71.  n = (900 * 125) / 71 =
75  //make it effectively proprietary.  To prevent this, the GPL assures that  //1584.5070 pixels, so we choose 1585.  This keeps the aspect ratio of the
76  //patents cannot be used to render the program non-free.  //original image and the thumbnail as close as possible.
77  //  //
78  //  The precise terms and conditions for copying, distribution and  //Although the longer side of the original image may be reduced prior to the
79  //modification follow.  //conversion to a thumbnail, this information is not written to disk, and
80  //  //the original image is not modified.  The adjustment of the longer side is
81  //                       TERMS AND CONDITIONS  //just a conversion trick to hopefully get better thumbnails.
82  //  function calc_thumbnail_conversion_pars
83  //  0. Definitions.           (
84  //             $in_orig_longer,
85  //  "This License" refers to version 3 of the GNU General Public License.                //Longer dimension of original image.
86  //             $in_orig_shorter,
87  //  "Copyright" also means copyright-like laws that apply to other kinds of                //Shorter dimension of original image.
88  //works, such as semiconductor masks.             $in_thumbnail_longer,
89  //                //Longer dimension of desired thumbnail.
90  //  "The Program" refers to any copyrightable work licensed under this           & $out_thumbnail_longer,
91  //License.  Each licensee is addressed as "you".  "Licensees" and                //Longer dimension of thumbnail that should be created.
92  //"recipients" may be individuals or organizations.           & $out_thumbnail_shorter,
93  //                //Shorter dimension of thumbnail that should be created.
94  //  To "modify" a work means to copy from or adapt all or part of the work           & $out_orig_crop_dim_longer,
95  //in a fashion requiring copyright permission, other than the making of an                //The size to crop to on the longer axis of the original.
96  //exact copy.  The resulting work is called a "modified version" of the           & $out_orig_crop_dim_shorter,
97  //earlier work or a work "based on" the earlier work.                //The size to crop to on the shorter axis of the original.
98  //           & $out_orig_crop_start_longer,
99  //  A "covered work" means either the unmodified Program or a work based                //For use with the Imagick:cropImage() method, the start
100  //on the Program.                //position of the crop on the longer axis.
101  //           & $out_orig_crop_start_shorter
102  //  To "propagate" a work means to do anything with it that, without                //For use with the Imagick:cropImage() method, the start
103  //permission, would make you directly or secondarily liable for                //position of the crop on the shorter axis.
104  //infringement under applicable copyright law, except executing it on a           )
105  //computer or modifying a private copy.  Propagation includes copying,  {
106  //distribution (with or without modification), making available to the     //Set the thumbnail shorter dimension to the floor.  This means would need to trim
107  //public, and in some countries other activities as well.     //longest dimension of original to match aspect ratio as closely as possible.
108  //     $out_thumbnail_longer        = $in_thumbnail_longer;
109  //  To "convey" a work means any kind of propagation that enables other     $out_thumbnail_shorter       = ceil(((float)$in_thumbnail_longer *
110  //parties to make or receive copies.  Mere interaction with a user through                                    (float)$in_orig_shorter) / (float)$in_orig_longer);
111  //a computer network, with no transfer of a copy, is not conveying.     settype($out_thumbnail_shorter, "integer");
112  //  
113  //  An interactive user interface displays "Appropriate Legal Notices"     //The aspect ratio of the thumbnail is now set.  Try to match the aspect ratio of the larger
114  //to the extent that it includes a convenient and prominently visible     //image as closely as possible by selecting a smaller number for the long axis of the
115  //feature that (1) displays an appropriate copyright notice, and (2)     //original image.
116  //tells the user that there is no warranty for the work (except to the     $out_orig_crop_dim_longer = round(((float)$in_thumbnail_longer *
117  //extent that warranties are provided), that licensees may convey the                                 (float)$in_orig_shorter) / (float)$out_thumbnail_shorter);
118  //work under this License, and how to view a copy of this License.  If     settype($out_orig_crop_dim_longer, "integer");
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.     //The original keeps its shorter dimension unchanged.
121  //     $out_orig_crop_dim_shorter   = $in_orig_shorter;
122  //  1. Source Code.  
123  //     //Set the cropping of the longer side of the original to cover half the necessary
124  //  The "source code" for a work means the preferred form of the work     //reduction.
125  //for making modifications to it.  "Object code" means any non-source     $out_orig_crop_start_longer  = round(((float)$in_orig_longer -
126  //form of a work.                                    (float)$out_orig_crop_dim_longer) / 2.0);
127  //     settype($out_orig_crop_start_longer, "integer");
128  //  A "Standard Interface" means an interface that either is an official  
129  //standard defined by a recognized standards body, or, in the case of     //No cropping of original shorter side.
130  //interfaces specified for a particular programming language, one that     $out_orig_crop_start_shorter = 0;
131  //is widely used among developers working in that language.  }
132  //  //--------------------------------------------------------------------------------
133  //  The "System Libraries" of an executable work include anything, other  //Repeats a character to the console output a certain number of times.
134  //than the work as a whole, that (a) is included in the normal form of  function rep_char_con($c, $n)
135  //packaging a Major Component, but which is not part of that Major  {
136  //Component, and (b) serves only to enable use of the work with that     while ($n--)
137  //Major Component, or to implement a Standard Interface for which an        echo $c;
138  //implementation is available to the public in source code form.  A  }
139  //"Major Component", in this context, means a major essential component  //--------------------------------------------------------------------------------
140  //(kernel, window system, and so on) of the specific operating system  //Writes a standard thick horizontal line to the console.
141  //(if any) on which the executable work runs, or a compiler used to  function hor_line_thick()
142  //produce the work, or an object code interpreter used to run it.  {
143  //     rep_char_con("=", CFG_CONSOLE_STD_LINE_LEN);
144  //  The "Corresponding Source" for a work in object code form means all     echo "\n";
145  //the source code needed to generate, install, and (for an executable  }
146  //work) run the object code and to modify the work, including scripts to  //--------------------------------------------------------------------------------
147  //control those activities.  However, it does not include the work's  //Writes a standard thin horizontal line to the console.
148  //System Libraries, or general-purpose tools or generally available free  function hor_line_thin()
149  //programs which are used unmodified in performing those activities but  {
150  //which are not part of the work.  For example, Corresponding Source     rep_char_con("-", CFG_CONSOLE_STD_LINE_LEN);
151  //includes interface definition files associated with source files for     echo "\n";
152  //the work, and the source code for shared libraries and dynamically  }
153  //linked subprograms that the work is specifically designed to require,  //--------------------------------------------------------------------------------
154  //such as by intimate data communication or control flow between those  //Returns an array of all files in the working directory.
155  //subprograms and other parts of the work.  //If no files can be found, returns FALSE.
156  //  function get_file_names_in_dir()
157  //  The Corresponding Source need not include anything that users  {
158  //can regenerate automatically from other parts of the Corresponding     //Get directory list.
159  //Source.     $rv = scandir (".");
160  //  
161  //  The Corresponding Source for a work in source code form is that     //If the list is empty, something went wrong.  Return FALSE.
162  //same work.     if ($rv === FALSE)
163  //        return FALSE;
164  //  2. Basic Permissions.  
165  //     return $rv;
166  //  All rights granted under this License are granted for the term of  }
167  //copyright on the Program, and are irrevocable provided the stated  //--------------------------------------------------------------------------------
168  //conditions are met.  This License explicitly affirms your unlimited  //Returns TRUE if a file name appears to be a valid full-sized image name,
169  //permission to run the unmodified Program.  The output from running a  //or FALSE otherwise.
170  //covered work is covered by this License only if the output, given its  function is_full_sized_image_file_name($in_filename)
171  //content, constitutes a covered work.  This License acknowledges your  {
172  //rights of fair use or other equivalent, as provided by copyright law.     //Convert the string name to all lower case.  This will do for
173  //     //comparisons and tests.
174  //  You may make, run and propagate covered works that you do not     $s = strtolower($s);
175  //convey, without conditions so long as your license otherwise remains  
176  //in force.  You may convey covered works to others for the sole purpose     //Attempt to split the name into a base and an extension.  Any failure
177  //of having them make modifications exclusively for you, or provide you     //means it is an unsuitable name.
178  //with facilities for running those works, provided that you comply with     $extension_start = strrpos($in_filename, ".");
179  //the terms of this License in conveying all material for which you do        //Find position of last "." in string.  This should precede the
180  //not control copyright.  Those thus making or running the covered works        //file extension.
181  //for you must do so exclusively on your behalf, under your direction  
182  //and control, on terms that prohibit them from making any copies of     if ($extension_start === FALSE)
183  //your copyrighted material outside their relationship with you.     {
184  //        //Bad name.  Unsuitable.
185  //  Conveying under any other circumstances is permitted solely under        return FALSE;
186  //the conditions stated below.  Sublicensing is not allowed; section 10     }
187  //makes it unnecessary.  
188  //     //Calculate the base and extension.
189  //  3. Protecting Users' Legal Rights From Anti-Circumvention Law.     $filename_base    = substr($in_filename, 0, $extension_start);
190  //     $filename_extension = substr($in_filename, $extension_start + 1);
191  //  No covered work shall be deemed part of an effective technological  
192  //measure under any applicable law fulfilling obligations under article     //If the extension is neither "jpg" nor "jpeg", it is unsuitable.
193  //11 of the WIPO copyright treaty adopted on 20 December 1996, or     if (($filename_extension != "jpg") && ($filename_extension != "jpeg"))
194  //similar laws prohibiting or restricting circumvention of such        return FALSE;
195  //measures.  
196  //     //If the filename base is empty, the filename is unsuitable.
197  //  When you convey a covered work, you waive any legal power to forbid     if (strlen($filename_base) == 0)
198  //circumvention of technological measures to the extent such circumvention        return FALSE;
199  //is effected by exercising rights under this License with respect to  
200  //the covered work, and you disclaim any intention to limit operation or     //If the last characters of the base are the CFG_THUMBNAIL_FILENAME_SUFFIX,
201  //modification of the work as a means of enforcing, against the work's     //the name is unsuitable.
202  //users, your or third parties' legal rights to forbid circumvention of     if (strlen($filename_base) >= strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))
203  //technological measures.     {
204  //        if (substr($filename_base, strlen($filename_base) - strlen(CFG_THUMBNAIL_FILENAME_SUFFIX))
205  //  4. Conveying Verbatim Copies.            == CFG_THUMBNAIL_FILENAME_SUFFIX)
206  //           return FALSE;
207  //  You may convey verbatim copies of the Program's source code as you     }
208  //receive it, in any medium, provided that you conspicuously and  
209  //appropriately publish on each copy an appropriate copyright notice;     //Looks good.
210  //keep intact all notices stating that this License and any     return TRUE;
211  //non-permissive terms added in accord with section 7 apply to the code;  }
212  //keep intact all notices of the absence of any warranty; and give all  //--------------------------------------------------------------------------------
213  //recipients a copy of this License along with the Program.  //As a function of the file name, creates the file name for the thumbnail.
214  //  function file_name_to_thumbnail_name($in_filename)
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.     $extension_start = strrpos($in_filename, ".");
217  //        //Find position of last "." in string.  This should precede the
218  //  5. Conveying Modified Source Versions.        //file extension.
219  //     if ($extension_start === FALSE)
220  //  You may convey a work based on the Program, or the modifications to     {
221  //produce it from the Program, in the form of source code under the        //"." not found.  Should not happen.  Filenames were checked in advance.
222  //terms of section 4, provided that you also meet all of these conditions:        echo "Fatal internal error at line " . __LINE__ . "\n";
223  //        exit(1);
224  //    a) The work must carry prominent notices stating that you modified     }
225  //    it, and giving a relevant date.  
226  //     $filename_prefix    = substr($in_filename, 0, $extension_start);
227  //    b) The work must carry prominent notices stating that it is     $filename_extension = substr($in_filename, $extension_start);
228  //    released under this License and any conditions added under section  
229  //    7.  This requirement modifies the requirement in section 4 to     $rv = $filename_prefix . CFG_THUMBNAIL_FILENAME_SUFFIX . $filename_extension;
230  //    "keep intact all notices".  
231  //     return $rv;
232  //    c) You must license the entire work, as a whole, under this  }
233  //    License to anyone who comes into possession of a copy.  This  //--------------------------------------------------------------------------------
234  //    License will therefore apply, along with any applicable section 7  //Actually creates the thumbnail, and returns some information about what was
235  //    additional terms, to the whole of the work, and all its parts,  //done.
236  //    regardless of how they are packaged.  This License gives no  //
237  //    permission to license the work in any other way, but it does not  //The calls to the ImagMagick library take on the order of 5s per image if there
238  //    invalidate such permission if you have separately received it.  //is filtering.
239  //  function create_thumbnail(  $in_filename,
240  //    d) If the work has interactive user interfaces, each must display                              $in_thumbnailname,
241  //    Appropriate Legal Notices; however, if the Program has interactive                            & $out_filename_filesize,
242  //    interfaces that do not display Appropriate Legal Notices, your                            & $out_filename_xdim,
243  //    work need not make them do so.                            & $out_filename_ydim,
244  //                            & $out_thumbnailname_filesize,
245  //  A compilation of a covered work with other separate and independent                            & $out_thumbnailname_xdim,
246  //works, which are not by their nature extensions of the covered work,                            & $out_thumbnailname_ydim)
247  //and which are not combined with it such as to form a larger program,  {
248  //in or on a volume of a storage or distribution medium, is called an     //Assign output parameters just in case something doesn't get assigned.
249  //"aggregate" if the compilation and its resulting copyright are not     $out_filename_filesize      = 0;
250  //used to limit the access or legal rights of the compilation's users     $out_filename_xdim          = 0;
251  //beyond what the individual works permit.  Inclusion of a covered work     $out_filename_ydim          = 0;
252  //in an aggregate does not cause this License to apply to the other     $out_thumbnailname_filesize = 0;
253  //parts of the aggregate.     $out_thumbnailname_xdim     = 0;
254  //     $out_thumbnailname_ydim     = 0;
255  //  6. Conveying Non-Source Forms.  
256  //     //Establish target dimensions.  Two cases, depending on which is the longer
257  //  You may convey a covered work in object code form under the terms     //side.
258  //of sections 4 and 5, provided that you also convey the  
259  //machine-readable Corresponding Source under the terms of this License,     //Construct.
260  //in one of these ways:     $imagick = new Imagick();
261  //  
262  //    a) Convey the object code in, or embodied in, a physical product     //Load image.
263  //    (including a physical distribution medium), accompanied by the     $imagick->readImage($in_filename);
264  //    Corresponding Source fixed on a durable physical medium  
265  //    customarily used for software interchange.     //Get the dimensions of the image we just loaded.
266  //     $geo               = $imagick->getImageGeometry();
267  //    b) Convey the object code in, or embodied in, a physical product     $out_filename_xdim = $geo['width'];
268  //    (including a physical distribution medium), accompanied by a     $out_filename_ydim = $geo['height'];
269  //    written offer, valid for at least three years and valid for as  
270  //    long as you offer spare parts or customer support for that product     //Calculate target sizes.  We rearrange parameters based on which is our
271  //    model, to give anyone who possesses the object code either (1) a     //longest side.
272  //    copy of the Corresponding Source for all the software in the     if ($out_filename_xdim >= $out_filename_ydim)
273  //    product that is covered by this License, on a durable physical     {
274  //    medium customarily used for software interchange, for a price no        //Longer width (x-dimension), or square.
275  //    more than your reasonable cost of physically performing this        calc_thumbnail_conversion_pars
276  //    conveying of source, or (2) access to copy the           (
277  //    Corresponding Source from a network server at no charge.           $out_filename_xdim,
278  //           $out_filename_ydim,
279  //    c) Convey individual copies of the object code with a copy of the           CFG_THUMBNAIL_DIMENSION_MAX,
280  //    written offer to provide the Corresponding Source.  This           $out_thumbnailname_xdim,
281  //    alternative is allowed only occasionally and noncommercially, and           $out_thumbnailname_ydim,
282  //    only if you received the object code with such an offer, in accord           $orig_crop_dim_x,
283  //    with subsection 6b.           $orig_crop_dim_y,
284  //           $orig_crop_start_x,
285  //    d) Convey the object code by offering access from a designated           $orig_crop_start_y
286  //    place (gratis or for a charge), and offer equivalent access to the           );
287  //    Corresponding Source in the same way through the same place at no     }
288  //    further charge.  You need not require recipients to copy the     else
289  //    Corresponding Source along with the object code.  If the place to     {
290  //    copy the object code is a network server, the Corresponding Source        //Longer height (y-dimension).
291  //    may be on a different server (operated by you or a third party)        calc_thumbnail_conversion_pars
292  //    that supports equivalent copying facilities, provided you maintain           (
293  //    clear directions next to the object code saying where to find the           $out_filename_ydim,
294  //    Corresponding Source.  Regardless of what server hosts the           $out_filename_xdim,
295  //    Corresponding Source, you remain obligated to ensure that it is           CFG_THUMBNAIL_DIMENSION_MAX,
296  //    available for as long as needed to satisfy these requirements.           $out_thumbnailname_ydim,
297  //           $out_thumbnailname_xdim,
298  //    e) Convey the object code using peer-to-peer transmission, provided           $orig_crop_dim_y,
299  //    you inform other peers where the object code and Corresponding           $orig_crop_dim_x,
300  //    Source of the work are being offered to the general public at no           $orig_crop_start_y,
301  //    charge under subsection 6d.           $orig_crop_start_x
302  //           );
303  //  A separable portion of the object code, whose source code is excluded     }
304  //from the Corresponding Source as a System Library, need not be  
305  //included in conveying the object code work.     //For debugging only, might want to know intermediate calculation results.
306  //     //echo "xcropdim, ycropdim, xcropstart, ycropstart: "
307  //  A "User Product" is either (1) a "consumer product", which means any     //     .
308  //tangible personal property which is normally used for personal, family,     //     $orig_crop_dim_x
309  //or household purposes, or (2) anything designed or sold for incorporation     //     .
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     //     .
312  //product received by a particular user, "normally used" refers to a     //     $orig_crop_dim_y
313  //typical or common use of that class of product, regardless of the status     //     .
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     //     .
316  //is a consumer product regardless of whether the product has substantial     //     $orig_crop_start_x
317  //commercial, industrial or non-consumer uses, unless such uses represent     //     .
318  //the only significant mode of use of the product.     //     " "
319  //     //     .
320  //  "Installation Information" for a User Product means any methods,     //     $orig_crop_start_y
321  //procedures, authorization keys, or other information required to install     //     .
322  //and execute modified versions of a covered work in that User Product from     //     "\n";
323  //a modified version of its Corresponding Source.  The information must            
324  //suffice to ensure that the continued functioning of the modified object     //Crop the original to try to preserve the aspect ratio of the thumbnail
325  //code is in no case prevented or interfered with solely because     //as precisely as possible.
326  //modification has been made.     $imagick->cropImage(
327  //                        $orig_crop_dim_x,
328  //  If you convey an object code work under this section in, or with, or                        $orig_crop_dim_y,
329  //specifically for use in, a User Product, and the conveying occurs as                        $orig_crop_start_x,
330  //part of a transaction in which the right of possession and use of the                        $orig_crop_start_y
331  //User Product is transferred to the recipient in perpetuity or for a                        );
332  //fixed term (regardless of how the transaction is characterized), the  
333  //Corresponding Source conveyed under this section must be accompanied     //For debugging only, might want to get a look at the cropped image, to
334  //by the Installation Information.  But this requirement does not apply     //be sure nothing unexpected happens on the canvas.
335  //if neither you nor any third party retains the ability to install     //$imagick->writeImage($in_filename . ".cropped.jpg");
336  //modified object code on the User Product (for example, the work has  
337  //been installed in ROM).     //Resize to thumbnail size.
338  //     if (CFG_LANCZOS_FILTER_APPLY)
339  //  The requirement to provide Installation Information does not include a     {
340  //requirement to continue to provide support service, warranty, or updates        $imagick->resizeImage($out_thumbnailname_xdim,
341  //for a work that has been modified or installed by the recipient, or for                              $out_thumbnailname_ydim,
342  //the User Product in which it has been modified or installed.  Access to a                              Imagick::FILTER_LANCZOS,
343  //network may be denied when the modification itself materially and                              1);
344  //adversely affects the operation of the network or violates the rules and     }
345  //protocols for communication across the network.     else
346  //     {
347  //  Corresponding Source conveyed, and Installation Information provided,        $imagick->resizeImage($out_thumbnailname_xdim,
348  //in accord with this section must be in a format that is publicly                              $out_thumbnailname_ydim,
349  //documented (and with an implementation available to the public in                              0,
350  //source code form), and must require no special password or key for                              1);
351  //unpacking, reading or copying.     }
352  //  
353  //  7. Additional Terms.     //Create the border.
354  //     $imagick->raiseImage(CFG_THUMBNAIL_BEVELED_BORDER_WIDTH,
355  //  "Additional permissions" are terms that supplement the terms of this                          CFG_THUMBNAIL_BEVELED_BORDER_WIDTH,
356  //License by making exceptions from one or more of its conditions.                          0,
357  //Additional permissions that are applicable to the entire Program shall                          0,
358  //be treated as though they were included in this License, to the extent                          1);
359  //that they are valid under applicable law.  If additional permissions  
360  //apply only to part of the Program, that part may be used separately     //Set compression to get a smaller thumbnail written, and strip
361  //under those permissions, but the entire Program remains governed by     //header information.  stripImage() seems to have the largest effect
362  //this License without regard to the additional permissions.     //on thumbnail file size, so leaving the thumbnail quality near 100%
363  //     //is feasible.  The jump in file size between 90% and 95% seemed to be
364  //  When you convey a copy of a covered work, you may at your option     //fairly large (40% to 50%), so I left it at 90%.  My rationale is
365  //remove any additional permissions from that copy, or from any part of     //that with the proliferation of mobile devices and cellular data,
366  //it.  (Additional permissions may be written to require their own     //getting the thumbnail as small as possible is more important than
367  //removal in certain cases when you modify the work.)  You may place     //the thumbnail looking perfect.  If the viewer wants a perfect image,
368  //additional permissions on material, added by you to a covered work,     //they can view the full-sized image.
369  //for which you have or can give appropriate copyright permission.     $imagick->setImageCompression(Imagick::COMPRESSION_JPEG);
370  //     $imagick->setImageCompressionQuality(90);
371  //  Notwithstanding any other provision of this License, for material you     $imagick->stripImage();
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:     //Write the thumbnail.
374  //     $imagick->writeImage($in_thumbnailname);
375  //    a) Disclaiming warranty or limiting liability differently from the  
376  //    terms of sections 15 and 16 of this License; or     //Destroy to prevent memory leak.
377  //     $imagick->clear();
378  //    b) Requiring preservation of specified reasonable legal notices or     $imagick->destroy();
379  //    author attributions in that material or in the Appropriate Legal  
380  //    Notices displayed by works containing it; or     //All of the writing is done.  Try to obtain the file sizes.
381  //     $fsize = filesize($in_filename);
382  //    c) Prohibiting misrepresentation of the origin of that material, or     if ($fsize !== FALSE)
383  //    requiring that modified versions of such material be marked in        $out_filename_filesize = $fsize;
384  //    reasonable ways as different from the original version; or     $fsize = filesize($in_thumbnailname);
385  //     if ($fsize !== FALSE)
386  //    d) Limiting the use for publicity purposes of names of licensors or        $out_thumbnailname_filesize = $fsize;
387  //    authors of the material; or  }
388  //  //--------------------------------------------------------------------------------
389  //    e) Declining to grant rights under trademark law for use of some     //Write introductory message.
390  //    trade names, trademarks, or service marks; or     hor_line_thick();
391  //     echo CFG_PROGNAME . " Copyright (C) 2015 David T. Ashley\n";
392  //    f) Requiring indemnification of licensors and authors of that     echo "This program comes with ABSOLUTELY NO WARRANTY; and is licensed under\n";
393  //    material by anyone who conveys the material (or modified versions of     echo "the GNU General Public License, Version 3.  A copy of this license is\n";
394  //    it) with contractual assumptions of liability to the recipient, for     echo "provided in the source code of this program.\n";
395  //    any liability that these contractual assumptions directly impose on     hor_line_thin();
396  //    those licensors and authors.     //-----------------------------------------------------------------------------
397  //     //Get and emit the names of everything in the directory.
398  //  All other non-permissive additional terms are considered "further     $file_list = get_file_names_in_dir();
399  //restrictions" within the meaning of section 10.  If the Program as you     if ($file_list === FALSE)
400  //received it, or any part of it, contains a notice stating that it is     {
401  //governed by this License along with a term that is a further        echo "List of files from PHP function scandir() is empty.\n";
402  //restriction, you may remove that term.  If a license document contains        echo "Serious internal error, or nothing to do.  Script cannot continue.\n";
403  //a further restriction but permits relicensing or conveying under this        hor_line_thick();
404  //License, you may add to a covered work material governed by the terms        exit(1);
405  //of that license document, provided that the further restriction does     }
406  //not survive such relicensing or conveying.     else
407  //     {
408  //  If you add terms to a covered work in accord with this section, you       echo "Files in working directory (unsorted, unfiltered, "
409  //must place, in the relevant source files, a statement of the            .
410  //additional terms that apply to those files, or a notice indicating            count($file_list)
411  //where to find the applicable terms.            .
412  //            " files):\n";
413  //  Additional terms, permissive or non-permissive, may be stated in the       for ($i = 0; $i < count($file_list); $i++)
414  //form of a separately written license, or stated as exceptions;          echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";
415  //the above requirements apply either way.     }
416  //     hor_line_thin();
417  //  8. Termination.     //-----------------------------------------------------------------------------
418  //     //Remove the standard directory entries "." and ".." from the list, and
419  //  You may not propagate or modify a covered work except as expressly     //remove any directories.
420  //provided under this License.  Any attempt otherwise to propagate or     $temp_list = $file_list;
421  //modify it is void, and will automatically terminate your rights under     unset($file_list);
422  //this License (including any patent licenses granted under the third     $n = 0;
423  //paragraph of section 11).     for ($i = 0; $i < count($temp_list); $i++)
424  //     {
425  //  However, if you cease all violation of this License, then your        //echo "Checking " . $temp_list[$i] . "\n";
426  //license from a particular copyright holder is reinstated (a)  
427  //provisionally, unless and until the copyright holder explicitly and        if (strcmp($temp_list[$i], ".") == 0)
428  //finally terminates your license, and (b) permanently, if the copyright        {
429  //holder fails to notify you of the violation by some reasonable means           //. entry, not a file.
430  //prior to 60 days after the cessation.        }
431  //        else if (strcmp($temp_list[$i], "..") == 0)
432  //  Moreover, your license from a particular copyright holder is        {
433  //reinstated permanently if the copyright holder notifies you of the           //.. entry, not a file.
434  //violation by some reasonable means, this is the first time you have        }
435  //received notice of violation of this License (for any work) from that        else if (is_file($temp_list[$i]))
436  //copyright holder, and you cure the violation prior to 30 days after        {
437  //your receipt of the notice.           //This is a regular file.
438  //           $file_list[] = $temp_list[$i];
439  //  Termination of your rights under this section does not terminate the           $n++;
440  //licenses of parties who have received copies or rights from you under        }
441  //this License.  If your rights have been terminated and not permanently     }
442  //reinstated, you do not qualify to receive new licenses for the same    
443  //material under section 10.     if ($n == 0)
444  //        $file_list = FALSE;
445  //  9. Acceptance Not Required for Having Copies.  
446  //     unset($n);
447  //  You are not required to accept this License in order to receive or     unset($temp_list);
448  //run a copy of the Program.  Ancillary propagation of a covered work     //-----------------------------------------------------------------------------
449  //occurring solely as a consequence of using peer-to-peer transmission     //If there is nothing to do, end the script.
450  //to receive a copy likewise does not require acceptance.  However,     if ($file_list === FALSE)
451  //nothing other than this License grants you permission to propagate or     {
452  //modify any covered work.  These actions infringe copyright if you do        echo "No files to process.\n";
453  //not accept this License.  Therefore, by modifying or propagating a        hor_line_thick();
454  //covered work, you indicate your acceptance of this License to do so.        exit(0);
455  //     }
456  //  10. Automatic Licensing of Downstream Recipients.     //-----------------------------------------------------------------------------
457  //     //Sort the list.  This is a non-event.  The only rationale for sorting is that
458  //  Each time you convey a covered work, the recipient automatically     //it ensures that the same set of files will be processed in the same order,
459  //receives a license from the original licensors, to run, modify and     //regardless of the order provided by the underlying OS internals.
460  //propagate that work, subject to this License.  You are not responsible     sort($file_list);
461  //for enforcing compliance by third parties with this License.     //-----------------------------------------------------------------------------
462  //     //Emit the names we now have.
463  //  An "entity transaction" is a transaction transferring control of an     echo "Files in working directory (directory entries removed, sorted, "
464  //organization, or substantially all assets of one, or subdividing an          .
465  //organization, or merging organizations.  If propagation of a covered          count($file_list)
466  //work results from an entity transaction, each party to that          .
467  //transaction who receives a copy of the work also receives whatever          " files):\n";
468  //licenses to the work the party's predecessor in interest had or could     for ($i = 0; $i < count($file_list); $i++)
469  //give under the previous paragraph, plus a right to possession of the        echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . "\n";
470  //Corresponding Source of the work from the predecessor in interest, if     hor_line_thin();
471  //the predecessor has it or can get it with reasonable efforts.  
472  //     //-----------------------------------------------------------------------------
473  //  You may not impose any further restrictions on the exercise of the     //For each file that is appropriate and where the thumbnail does not already
474  //rights granted or affirmed under this License.  For example, you may     //exist, up to the maximum we may do in one invocation, create the thumbnail.
475  //not impose a license fee, royalty, or other charge for exercise of     $i         = 0;
476  //rights granted under this License, and you may not initiate litigation     $completed = 0;
477  //(including a cross-claim or counterclaim in a lawsuit) alleging that     while (($completed < CFG_MAX_THUMBNAILS_PER_INVOCATION) && ($i < count($file_list)))
478  //any patent claim is infringed by making, using, selling, offering for     {
479  //sale, or importing the Program or any portion of it.        if (is_full_sized_image_file_name($file_list[$i]))
480  //        {
481  //  11. Patents.           $thumbnail_name = file_name_to_thumbnail_name($file_list[$i]);
482  //  
483  //  A "contributor" is a copyright holder who authorizes use under this           if (file_exists($thumbnail_name))
484  //License of the Program or a work on which the Program is based.  The           {
485  //work thus licensed is called the contributor's "contributor version".              echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping because corresponding thumbnail exists.\n";
486  //              hor_line_thin();
487  //  A contributor's "essential patent claims" are all patent claims           }
488  //owned or controlled by the contributor, whether already acquired or           else
489  //hereafter acquired, that would be infringed by some manner, permitted           {
490  //by this License, of making, using, or selling its contributor version,              echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : creating thumbnail.\n";
491  //but do not include claims that would be infringed only as a  
492  //consequence of further modification of the contributor version.  For              echo "Creating thumbnail \"" .
493  //purposes of this definition, "control" includes the right to grant                   $thumbnail_name .
494  //patent sublicenses in a manner consistent with the requirements of                   "\" from image \"" .
495  //this License.                   $file_list[$i] .
496  //                   "\".\n";
497  //  Each contributor grants you a non-exclusive, worldwide, royalty-free  
498  //patent license under the contributor's essential patent claims, to              create_thumbnail($file_list[$i],
499  //make, use, sell, offer for sale, import and otherwise run, modify and                               $thumbnail_name,
500  //propagate the contents of its contributor version.                               $filename_filesize,
501  //                               $filename_xdim,
502  //  In the following three paragraphs, a "patent license" is any express                               $filename_ydim,
503  //agreement or commitment, however denominated, not to enforce a patent                               $thumbnail_filesize,
504  //(such as an express permission to practice a patent or covenant not to                               $thumbnail_xdim,
505  //sue for patent infringement).  To "grant" such a patent license to a                               $thumbnail_ydim);
506  //party means to make such an agreement or commitment not to enforce a  
507  //patent against the party.              echo "Conversion complete.\n";
508  //              echo "   Full-sized image file size/xdim/ydim = " .
509  //  If you convey a covered work, knowingly relying on a patent license,                   $filename_filesize . "/" . $filename_xdim . "/" . $filename_ydim .
510  //and the Corresponding Source of the work is not available for anyone                   ",\n";
511  //to copy, free of charge and under the terms of this License, through a              echo "   Thumbnail image  filesize/xdim/ydim = " .
512  //publicly available network server or other readily accessible means,                   $thumbnail_filesize . "/" . $thumbnail_xdim . "/" . $thumbnail_ydim .
513  //then you must either (1) cause the Corresponding Source to be so                   ",\n";
514  //available, or (2) arrange to deprive yourself of the benefit of the  
515  //patent license for this particular work, or (3) arrange, in a manner              hor_line_thin();
516  //consistent with the requirements of this License, to extend the patent              $completed++;
517  //license to downstream recipients.  "Knowingly relying" means you have           }
518  //actual knowledge that, but for the patent license, your conveying the        }
519  //covered work in a country, or your recipient's use of the covered work        else
520  //in a country, would infringe one or more identifiable patents in that        {
521  //country that you have reason to believe are valid.           //Unsuitable base name.  Can't use it.
522  //           echo "   " . sprintf("[%5d]", $i) . " " . $file_list[$i] . " : skipping due to unsuitable name.\n";
523  //  If, pursuant to or in connection with a single transaction or           hor_line_thin();
524  //arrangement, you convey, or propagate by procuring conveyance of, a        }
525  //covered work, and grant a patent license to some of the parties  
526  //receiving the covered work authorizing them to use, propagate, modify        $i++;
527  //or convey a specific copy of the covered work, then the patent license     }
528  //you grant is automatically extended to all recipients of the covered  
529  //work and works based on it.     //Emit a message about whether the program should be run again.  I am aware of
530  //     //the uncovered case--where the last thumbnail was made on the last iteration
531  //  A patent license is "discriminatory" if it does not include within     //of this invocation--but I will leave it uncovered for now.  All that happens
532  //the scope of its coverage, prohibits the exercise of, or is     //is the user runs the program unnecessarily one more time.
533  //conditioned on the non-exercise of one or more of the rights that are     if ($completed == 0)
534  //specifically granted under this License.  You may not convey a covered     {
535  //work if you are a party to an arrangement with a third party that is        echo "No thumbnails were created--this program is done creating thumbnails.\n";
536  //in the business of distributing software, under which you make payment        echo "It is not necessary to run this program again.\n";
537  //to the third party based on the extent of your activity of conveying        hor_line_thin();
538  //the work, and under which the third party grants, to any of the     }
539  //parties who would receive the covered work from you, a discriminatory     else
540  //patent license (a) in connection with copies of the covered work     {
541  //conveyed by you (or copies made from those copies), or (b) primarily        echo $completed . " thumbnail(s) were created.  Please run this program repeatedly again\n";
542  //for and in connection with specific products or compilations that        echo "until no more thumbnails are created.\n";
543  //contain the covered work, unless you entered into that arrangement,        hor_line_thin();
544  //or that patent license was granted, prior to 28 March 2007.     }
545  //  
546  //  Nothing in this License shall be construed as excluding or limiting     echo CFG_PROGNAME . " execution ends.\n";
547  //any implied license or other defenses to infringement that may     hor_line_thick();
548  //otherwise be available to you under applicable patent law.  //--------------------------------------------------------------------------------
549  //  //End of File
550  //  12. No Surrender of Others' Freedom.  //--------------------------------------------------------------------------------
551  //  ?>
 //  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>/thumbnails_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  
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 //  
 //   Developers that use the GNU GPL protect your rights with two steps:  
 // (1) assert copyright on the software, and (2) offer you this License  
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 //   For the developers' and authors' protection, the GPL clearly explains  
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 // authors' sake, the GPL requires that modified versions be marked as  
 // changed, so that their problems will not be attributed erroneously to  
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 //  
 //   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  
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 // avoid the special danger that patents applied to a free program could  
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 // 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)  
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 // 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  
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 //  
 //   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  
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 //   The "Corresponding Source" for a work in object code form means all  
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 // Source.  
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 //   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  
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 // conditions are met.  This License explicitly affirms your unlimited  
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 //   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  
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 // for you must do so exclusively on your behalf, under your direction  
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 //   Conveying under any other circumstances is permitted solely under  
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 //   3. Protecting Users' Legal Rights From Anti-Circumvention Law.  
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 //   No covered work shall be deemed part of an effective technological  
 // measure under any applicable law fulfilling obligations under article  
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 //  
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 // and you may offer support or warranty protection for a fee.  
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 //   You may convey a work based on the Program, or the modifications to  
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 //     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  
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 //     invalidate such permission if you have separately received it.  
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 //     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.  
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 // 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.  
 //  
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 //--------------------------------------------------------------------------------  
 //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", "thumbnails_make.php");  
    //Number of characters per line preferred for console output.  
 define ("CFG_CONSOLE_STD_LINE_LEN", 78);  
    //Number of characters per line preferred for console output.  
 define ("CFG_THUMBNAIL_DIMENSION_MAX", 125);  
    //The maximum dimension of the created thumbnails.  Thumbnails are sized so  
    //that the longest dimension is this many pixels.  
 define ("CFG_THUMBNAIL_BEVELED_BORDER_WIDTH", 4);  
    //The number of pixels that the thumbnail beveled borders should be.  
 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_LANCZOS_FILTER_APPLY", FALSE);  
    //TRUE if should apply the Lanczos filter when making the thumbnail, FALSE  
    //otherwise.  I have no idea if using a Lanczos filter improves the quality  
    //of the thumbnails, but the filter was applied in the PHP example I found  
    //online.  Applying the Lanczos filter typically adds a few seconds to the  
    //time required to create each thumbnail.  
 define ("CFG_MAX_THUMBNAILS_PER_INVOCATION", 20);  
    //The maximum number of thumbnails that should be created per invocation.  
    //This is to prevent the program from being involuntarily terminated  
    //for taking too much CPU time.  
 //--------------------------------------------------------------------------------  
 //Calculates important integer indices related to creating a thumbnail, in order  
 //to minimize distortion in the thumbnail.  
 //  
 //When creating a thumbnail, the longer side may be relatively short (perhaps  
 //100 pixels), and the shorter side may be even shorter (perhaps even as short  
 //as 10 pixels).  If the dimensions of the original image were not changed,  
 //converting the image to a thumbnail may result in distortion of up to about  
 //one percent.  As an example, suppose that a 1600 x 900 image is converted to a  
 //thumbnail with the longer side of 125 pixels.  The ideal dimension for the  
 //shorter side would be (900/1600) * 125 = 70.3125 pixels.  The aspect ratio of  
 //the thumbnail can't be made to match the aspect ratio of the original image.  
 //  
 //To avoid any aspect ratio distortion that might be noticeable, this program  
 //chooses the shorter dimension for the thumbnail that is the ceiling of the actual  
 //quotient, then crops the longer dimension of the original image before the  
 //conversion to try and match the aspect ratios as closely as possible.  
 //  
 //In the example a paragraph or two above, the shorter side of the thumbnail  
 //would be chosen to be 71 pixels.  
 //  
 //Once this choice is made, we want to trim the original image before conversion  
 //so that n/900 is as close as possible to 125/71.  n = (900 * 125) / 71 =  
 //1584.5070 pixels, so we choose 1585.  This keeps the aspect ratio of the  
 //original image and the thumbnail as close as possible.  
 //  
 //Although the longer side of the original image may be reduced prior to the  
 //conversion to a thumbnail, this information is not written to disk, and  
 //the original image is not modified.  The adjustment of the longer side is  
 //just a conversion trick to hopefully get better thumbnails.  
 function calc_thumbnail_conversion_pars  
          (  
            $in_orig_longer,  
               //Longer dimension of original image.  
            $in_orig_shorter,  
               //Shorter dimension of original image.  
            $in_thumbnail_longer,  
               //Longer dimension of desired thumbnail.  
          & $out_thumbnail_longer,  
               //Longer dimension of thumbnail that should be created.  
          & $out_thumbnail_shorter,  
               //Shorter dimension of thumbnail that should be created.  
          & $out_orig_crop_dim_longer,  
               //The size to crop to on the longer axis of the original.  
          & $out_orig_crop_dim_shorter,  
               //The size to crop to on the shorter axis of the original.  
          & $out_orig_crop_start_longer,  
               //For use with the Imagick:cropImage() method, the start  
               //position of the crop on the longer axis.  
          & $out_orig_crop_start_shorter  
               //For use with the Imagick:cropImage() method, the start  
               //position of the crop on the shorter axis.  
          )  
 {  
    //Set the thumbnail shorter dimension to the floor.  This means would need to trim  
    //longest dimension of original to match aspect ratio as closely as possible.  
    $out_thumbnail_longer        = $in_thumbnail_longer;  
    $out_thumbnail_shorter       = ceil(((float)$in_thumbnail_longer *  
                                   (float)$in_orig_shorter) / (float)$in_orig_longer);  
    settype($out_thumbnail_shorter, "integer");  
   
    //The aspect ratio of the thumbnail is now set.  Try to match the aspect ratio of the larger  
    //image as closely as possible by selecting a smaller number for the long axis of the  
    //original image.  
    $out_orig_crop_dim_longer = round(((float)$in_thumbnail_longer *  
                                (float)$in_orig_shorter) / (float)$out_thumbnail_shorter);  
    settype($out_orig_crop_dim_longer, "integer");  
   
    //The original keeps its shorter dimension unchanged.  
    $out_orig_crop_dim_shorter   = $in_orig_shorter;  
   
    //Set the cropping of the longer side of the original to cover half the necessary  
    //reduction.  
    $out_orig_crop_start_longer  = round(((float)$in_orig_longer -  
                                   (float)$out_orig_crop_dim_longer) / 2.0);  
    settype($out_orig_crop_start_longer, "integer");  
   
    //No cropping of original shorter side.  
    $out_orig_crop_start_shorter = 0;  
 }  
 //--------------------------------------------------------------------------------  
 //Repeats a character to the console output a certain number of times.  
 function rep_char_con($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 $rv;  
 }  
 //--------------------------------------------------------------------------------  
 //Returns TRUE if a file name appears to be a valid full-sized image name,  
 //or FALSE otherwise.  
 function is_full_sized_image_file_name($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;  
 }  
 //--------------------------------------------------------------------------------  
 //Actually creates the thumbnail, and returns some information about what was  
 //done.  
 //  
 //The calls to the ImagMagick library take on the order of 5s per image if there  
 //is filtering.  
 function create_thumbnail(  $in_filename,  
                             $in_thumbnailname,  
                           & $out_filename_filesize,  
                           & $out_filename_xdim,  
                           & $out_filename_ydim,  
                           & $out_thumbnailname_filesize,  
                           & $out_thumbnailname_xdim,  
                           & $out_thumbnailname_ydim)  
 {  
    //Assign output parameters just in case something doesn't get assigned.  
    $out_filename_filesize      = 0;  
    $out_filename_xdim          = 0;  
    $out_filename_ydim          = 0;  
    $out_thumbnailname_filesize = 0;  
    $out_thumbnailname_xdim     = 0;  
    $out_thumbnailname_ydim     = 0;  
   
    //Establish target dimensions.  Two cases, depending on which is the longer  
    //side.  
   
    //Construct.  
    $imagick = new Imagick();  
   
    //Load image.  
    $imagick->readImage($in_filename);  
   
    //Get the dimensions of the image we just loaded.  
    $geo               = $imagick->getImageGeometry();  
    $out_filename_xdim = $geo['width'];  
    $out_filename_ydim = $geo['height'];  
   
    //Calculate target sizes.  We rearrange parameters based on which is our  
    //longest side.  
    if ($out_filename_xdim >= $out_filename_ydim)  
    {  
       //Longer width (x-dimension), or square.  
       calc_thumbnail_conversion_pars  
          (  
          $out_filename_xdim,  
          $out_filename_ydim,  
          CFG_THUMBNAIL_DIMENSION_MAX,  
          $out_thumbnailname_xdim,  
          $out_thumbnailname_ydim,  
          $orig_crop_dim_x,  
          $orig_crop_dim_y,  
          $orig_crop_start_x,  
          $orig_crop_start_y  
          );  
    }  
    else  
    {  
       //Longer height (y-dimension).  
       calc_thumbnail_conversion_pars  
          (  
          $out_filename_ydim,  
          $out_filename_xdim,  
          CFG_THUMBNAIL_DIMENSION_MAX,  
          $out_thumbnailname_ydim,  
          $out_thumbnailname_xdim,  
          $orig_crop_dim_y,  
          $orig_crop_dim_x,  
          $orig_crop_start_y,  
          $orig_crop_start_x  
          );  
    }  
   
    //For debugging only, might want to know intermediate calculation results.  
    //echo "xcropdim, ycropdim, xcropstart, ycropstart: "  
    //     .  
    //     $orig_crop_dim_x  
    //     .  
    //     " "  
    //     .  
    //     $orig_crop_dim_y  
    //     .  
    //     " "  
    //     .  
    //     $orig_crop_start_x  
    //     .  
    //     " "  
    //     .  
    //     $orig_crop_start_y  
    //     .  
    //     "\n";  
             
    //Crop the original to try to preserve the aspect ratio of the thumbnail  
    //as precisely as possible.  
    $imagick->cropImage(  
                       $orig_crop_dim_x,  
                       $orig_crop_dim_y,  
                       $orig_crop_start_x,  
                       $orig_crop_start_y  
                       );  
   
    //For debugging only, might want to get a look at the cropped image, to  
    //be sure nothing unexpected happens on the canvas.  
    //$imagick->writeImage($in_filename . ".cropped.jpg");  
   
    //Resize to thumbnail size.  
    if (CFG_LANCZOS_FILTER_APPLY)  
    {  
       $imagick->resizeImage($out_thumbnailname_xdim,  
                             $out_thumbnailname_ydim,  
                             Imagick::FILTER_LANCZOS,  
                             1);  
    }  
    else  
    {  
       $imagick->resizeImage($out_thumbnailname_xdim,  
                             $out_thumbnailname_ydim,  
                             0,  
                             1);  
    }  
   
    //Create the border.  
    $imagick->raiseImage(CFG_THUMBNAIL_BEVELED_BORDER_WIDTH,  
                         CFG_THUMBNAIL_BEVELED_BORDER_WIDTH,  
                         0,  
                         0,  
                         1);  
   
    //Set compression to get a smaller thumbnail written, and strip  
    //header information.  stripImage() seems to have the largest effect  
    //on thumbnail file size, so leaving the thumbnail quality near 100%  
    //is feasible.  The jump in file size between 90% and 95% seemed to be  
    //fairly large (40% to 50%), so I left it at 90%.  My rationale is  
    //that with the proliferation of mobile devices and cellular data,  
    //getting the thumbnail as small as possible is more important than  
    //the thumbnail looking perfect.  If the viewer wants a perfect image,  
    //they can view the full-sized image.  
    $imagick->setImageCompression(Imagick::COMPRESSION_JPEG);  
    $imagick->setImageCompressionQuality(90);  
    $imagick->stripImage();  
   
    //Write the thumbnail.  
    $imagick->writeImage($in_thumbnailname);  
   
    //Destroy to prevent memory leak.  
    $imagick->clear();  
    $imagick->destroy();  
   
    //All of the writing is done.  Try to obtain the file sizes.  
    $fsize = filesize($in_filename);  
    if ($fsize !== FALSE)  
       $out_filename_filesize = $fsize;  
    $fsize = filesize($in_thumbnailname);  
    if ($fsize !== FALSE)  
       $out_thumbnailname_filesize = $fsize;  
 }  
 //--------------------------------------------------------------------------------  
    //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 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 that is appropriate and where the thumbnail does not already  
    //exist, up to the maximum we may do in one invocation, create the thumbnail.  
    $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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