[SOLVED] Command line to output EPUB title description?

Xeratul · 07-22-2017, 08:14 AM

Hello,

I have downloaded from the free www.Gutenberg.org several Sci-Fi books about Mars:

herewith a cool list about Mars Sci-Fi:
pg21873-images.epub
pg23731-images.epub
pg24104-images.epub
pg27400-images.epub
pg32284-images.epub
pg32436-images.epub
pg32664-images.epub
pg4300-images.epub
pg45530-images.epub
pg50783-images.epub
pg62-images.epub
pg64-images.epub

There are awaiting on the apache web for sci-fi reading.

But well, in order to get an index.html file with the title of the book, it would be great to have a list with titles.

Would you maybe know a possible command line to output EPUB title description? Maybe even author(s).

Thank you

Turbocapitalist · 07-22-2017, 08:39 AM

EPUB embeds a lot of metadata. The utility exiftool can extract just about any metadata found in a file for you. That should include title, author, and many other fields in EPUB. See its man page for the million or so options.

Xeratul · 07-22-2017, 09:50 AM

Quote:

Originally Posted by Turbocapitalist

EPUB embeds a lot of metadata. The utility exiftool can extract just about any metadata found in a file for you. That should include title, author, and many other fields in EPUB. See its man page for the million or so options.

I installed exiftool

I did create a C file that does read the opendir list of files,
while popen it will exiftool to a file.

Many thanks !! mission completed.
https://pastebin.com/raw/PAwaVzQy

Part of the source code is here.

Code:


            ////////////////// advanced mechanism to create epub index
            if ( foundcode == 0 )
            if ( fetchline[0] == '!' )
            if ( fetchline[1] == 'e' )
            if ( fetchline[2] == 'x' )
            if ( fetchline[3] == 'i' )
            if ( fetchline[4] == 'f' )
            if ( fetchline[5] == '{' )
            {
 	      fputs( "<a href=\"" , fp5 );
 	      fputs( strdelimit( fetchline,  '{' ,'}' ,  1 ) , fp5 );
  	      fputs( "\">  ", fp5 );
 	      fputs( strdelimit( fetchline,  '{' ,'}' ,  1 ) , fp5 );
  	      fputs( " </a> <br> \n", fp5 );
                    // ok just to copy-paste easy
                    char linereadtmp[PATH_MAX];
                    char lineread[PATH_MAX];
                    char exifline[PATH_MAX];
                    FILE *fp1;
 	            strncpy( exifline, "",  PATH_MAX );
                    strncat( exifline , " exiftool \"" , PATH_MAX - strlen( exifline ) -1 );
                    strncat( exifline , strdelimit( fetchline,  '{' ,'}' ,  1 ) , PATH_MAX - strlen( exifline ) -1 );
                    strncat( exifline , "\" " , PATH_MAX - strlen( exifline ) -1 );
           	    //
                    printf( " =>Command (ext): %s\n", exifline );
                    fp1 = popen( exifline , "r");
                    while( !feof(fp1) ) 
                    {
                        fgets(linereadtmp, PATH_MAX, fp1); 
                        strncpy( lineread, strrlf(linereadtmp) , PATH_MAX );
                        if ( !feof(fp1) )
			{
  	                   fputs( lineread , fp5 );
  	                   fputs( "<br>\n" , fp5 );
		        }
                    }
                    pclose( fp1 );
 	            fputs( "<br>\n" , fp5 );
  	            foundcode = 1;
            }

Turbocapitalist · 07-22-2017, 10:04 AM

Interesting approach.

You could use it natively in perl. exiftool is just a front-end for the CPAN module Image::ExifTool. However, it isn't one of the modules that is build on top of C libraries, as far as I can tell, but there might be a corresponding C library out there so if you are using C you could use a native library instead.

Xeratul · 07-22-2017, 10:11 AM

Quote:

Originally Posted by Turbocapitalist

Interesting approach.

You could use it natively in perl. exiftool is just a front-end for the CPAN module Image::ExifTool. However, it isn't one of the modules that is build on top of C libraries, as far as I can tell, but there might be a corresponding C library out there so if you are using C you could use a native library instead.

I do not like large/vast installation, non portable, programming environment. I prefer Assembler (for 1 archi) or C at max.

next step would be to add lib in the C code.

but first, some reading and sipping

Turbocapitalist · 07-22-2017, 10:17 AM

Quote:

Originally Posted by Xeratul

I do not like large/vast installation, non portable, programming environment. I prefer Assembler or C at max.

That's fine. If you search you can find several EXIF libraries for C so you won't have to use C to call a wrapper to perl which is in turn using a CPAN module. You can do it all in C from top to bottom that way.

Xeratul · 07-22-2017, 10:27 AM

Quote:

Originally Posted by Turbocapitalist

That's fine. If you search you can find several EXIF libraries for C so you won't have to use C to call a wrapper to perl which is in turn using a CPAN module. You can do it all in C from top to bottom that way.

the problem is that if I use the exif library into my code, then, it won't be universal anylonger.

What about porting on mac, solaris,... ?

more reading about unimark: https://github.com/spartrekus/Unimark
example : https://github.com/spartrekus/Unimar...t-example2.pdf
Unimark does also work to create html with webmark.c