googleで検索した結果のURLをコピペしようとすると%がついた文字列になっている。その文字列でURLに指定するとうまく接続してくれない。
PDFのファイル名などでなければ、接続した先のURLをコピペすればいい。ファイルだと、PDF Readerが立ち上がってしまったURLを示さない。
URLエンコードというらしい。
RFC3986
https://tools.ietf.org/html/rfc3986
#参考資料(reference)
URLエンコード対応表メモ
https://qiita.com/i47_rozary/items/4f7c3ac08ee0836c1ca2
URLのクエリーパラメータでエスケープしなくていい文字はどれか？
https://qiita.com/aosho235/items/0581fc82f8ce2c5ac055
URLエンコード/デコード(perl)
https://qiita.com/wittyfool@github/items/407900819b5ed46b9631
シェルスクリプトでシンプルにurlエンコードする話
https://qiita.com/ik-fib/items/cc983ca34600c2d633d5
URLエンコードされてない部分をURLエンコードする（RFC3986準拠）
https://qiita.com/hiraiva/items/1b2d6d27d13dab0a1a42
#RFC3986参照(reference)
Normative References
[ASCII] American National Standards Institute, "Coded Character
Set -- 7-bit American Standard Code for Information
Interchange", ANSI X3.4, 1986.
[RFC2234] Crocker, D. and P. Overell, "Augmented BNF for Syntax
Specifications: ABNF", RFC 2234, November 1997.
[STD63] Yergeau, F., "UTF-8, a transformation format of
ISO 10646", STD 63, RFC 3629, November 2003.
[UCS] International Organization for Standardization,
"Information Technology - Universal Multiple-Octet Coded
Character Set (UCS)", ISO/IEC 10646:2003, December 2003.
Informative References
[BCP19] Freed, N. and J. Postel, "IANA Charset Registration
Procedures", BCP 19, RFC 2978, October 2000.
[BCP35] Petke, R. and I. King, "Registration Procedures for URL
Scheme Names", BCP 35, RFC 2717, November 1999.
[RFC0952] Harrenstien, K., Stahl, M., and E. Feinler, "DoD Internet
host table specification", RFC 952, October 1985.
[RFC1034] Mockapetris, P., "Domain names - concepts and facilities",
STD 13, RFC 1034, November 1987.
[RFC1123] Braden, R., "Requirements for Internet Hosts - Application
and Support", STD 3, RFC 1123, October 1989.
[RFC1535] Gavron, E., "A Security Problem and Proposed Correction
With Widely Deployed DNS Software", RFC 1535,
October 1993.
[RFC1630] Berners-Lee, T., "Universal Resource Identifiers in WWW: A
Unifying Syntax for the Expression of Names and Addresses
of Objects on the Network as used in the World-Wide Web",
RFC 1630, June 1994.
[RFC1736] Kunze, J., "Functional Recommendations for Internet
Resource Locators", RFC 1736, February 1995.
[RFC1737] Sollins, K. and L. Masinter, "Functional Requirements for
Uniform Resource Names", RFC 1737, December 1994.
[RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, "Uniform
Resource Locators (URL)", RFC 1738, December 1994.
[RFC1808] Fielding, R., "Relative Uniform Resource Locators",
RFC 1808, June 1995.
[RFC2046] Freed, N. and N. Borenstein, "Multipurpose Internet Mail
Extensions (MIME) Part Two: Media Types", RFC 2046,
November 1996.
[RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997.
[RFC2396] Berners-Lee, T., Fielding, R., and L. Masinter, "Uniform
Resource Identifiers (URI): Generic Syntax", RFC 2396,
August 1998.
[RFC2518] Goland, Y., Whitehead, E., Faizi, A., Carter, S., and D.
Jensen, "HTTP Extensions for Distributed Authoring --
WEBDAV", RFC 2518, February 1999.
[RFC2557] Palme, J., Hopmann, A., and N. Shelness, "MIME
Encapsulation of Aggregate Documents, such as HTML
(MHTML)", RFC 2557, March 1999.
[RFC2718] Masinter, L., Alvestrand, H., Zigmond, D., and R. Petke,
"Guidelines for new URL Schemes", RFC 2718, November 1999.
[RFC2732] Hinden, R., Carpenter, B., and L. Masinter, "Format for
Literal IPv6 Addresses in URL's", RFC 2732, December 1999.
[RFC3305] Mealling, M. and R. Denenberg, "Report from the Joint
W3C/IETF URI Planning Interest Group: Uniform Resource
Identifiers (URIs), URLs, and Uniform Resource Names
(URNs): Clarifications and Recommendations", RFC 3305,
August 2002.
[RFC3490] Faltstrom, P., Hoffman, P., and A. Costello,
"Internationalizing Domain Names in Applications (IDNA)",
RFC 3490, March 2003.
[RFC3513] Hinden, R. and S. Deering, "Internet Protocol Version 6
(IPv6) Addressing Architecture", RFC 3513, April 2003.
[Siedzik] Siedzik, R., "Semantic Attacks: What's in a URL?",
April 2001, <http://www.giac.org/practical/gsec/
Richard_Siedzik_GSEC.pdf>.
文書履歴(document history)
ver. 0.01 初稿 20190313 早朝
ver. 0.02 みだし追記 20190313 朝
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