img2Dataurls

It outputs file that has an array of dataurls, corresponding to image files with the given extension in the current directory, and returns the output filename.
https://github.com/YujiSODE/img2Dataurls

Copyright (c) 2017 Yuji SODE <[email protected]>
This software is released under the MIT License.
See LICENSE or http://opensource.org/licenses/mit-license.php

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0. data URL scheme

According to RFC 2397 (Masinter, 1998), data URL scheme is URL scheme that would work like 'immediate addressing', and this scheme has following form of URL:
data:[<mediatype>][;base64],<data>
RFC 2397 (Masinter, 1998) shows an example of using data URL scheme as an inline image in a HTML document as follows:
<IMG SRC="data:image/gif;base64,R0lGODdhM ... AA7" ALT="Larry">

1. Synopsis

Tcl
::img2Dataurls::getUrls exName1;
Shell
tclsh img2Dataurls.tcl exName1 ??exName2? ?exName3? ... ?exNameN??;

Parameters

• exNameN: N-th name of image file extension

Script

• img2Dataurls.tcl

2. Output

This script outputs a file that has an array of dataurls corresponding to image files with the given extension in the current directory.
Details of output file

1. filename: dataurls_<exNameN><XXX>.tcl
   where <exNameN> and <XXX> are given file extension and numbers.
2. file contents
   There are header section and body section.

   1. header section
      It has timestamp, directory and fileExtension.

      • timestamp: timestamp of execution
      • directory: path to the current directory
      • fileExtension: given file extension

   2. body section
      It has following format:
      #=== File: <matched filename> ===
#dataurl
set dataurls(<matched filename>) {<dataurl>};

3. Library list

• dataurl64/dataurl64.tcl (Yuji SODE,2017): the MIT License; https://gist.github.com/YujiSODE/009cdfb080e273ec506a1ef24acd050c

4. Reference

• Masinter, L. 1998. The "data" URL scheme. Request for Comments 2397, The Internet Society. derived on [2017-09-23] from: https://tools.ietf.org/html/rfc2397