Annotation of libwww/Library/src/WWWFile.html, revision 2.9
2.1 frystyk 1: <HTML>
2: <HEAD>
2.7 frystyk 3: <TITLE>W3C Sample Code Library libwww Local File Access</TITLE>
2.1 frystyk 4: </HEAD>
5: <BODY>
2.6 frystyk 6: <H1>
2.7 frystyk 7: Declaration of W3C Sample Code Local File Access
2.6 frystyk 8: </H1>
2.1 frystyk 9: <PRE>
10: /*
11: ** (c) COPYRIGHT MIT 1995.
12: ** Please first read the full copyright statement in the file COPYRIGH.
13: */
14: </PRE>
2.6 frystyk 15: <P>
16: This is the module for accessing local files and directories. The module
17: contans
2.1 frystyk 18: <PRE>
19: #ifndef WWWFILE_H
20: #define WWWFILE_H
21: </PRE>
22: <PRE>
23: #ifdef __cplusplus
24: extern "C" {
25: #endif
26: </PRE>
2.6 frystyk 27: <H3>
28: System dependencies
29: </H3>
30: <P>
2.8 frystyk 31: The <A HREF="wwwsys.html">wwwsys.h</A> file includes system-specific include
2.6 frystyk 32: files and flags for I/O to network and disk. The only reason for this file
33: is that the Internet world is more complicated than Posix and ANSI.
2.1 frystyk 34: <PRE>
2.8 frystyk 35: #include "wwwsys.h"
2.5 frystyk 36: </PRE>
2.6 frystyk 37: <H3>
38: Access the Local File System
39: </H3>
40: <P>
41: The WWWFile interface provides a platform independent access scheme for local
42: files. The local file access works exactly like any other access scheme,
43: for example HTTP, in that the "file protocol" is independent of the underlying
44: transport. This can be used to for example slide in a CVS transport layser
45: underneath the file module without making any modifications to the file module
46: itself. You can read more about the transport managament in the
47: <A HREF="WWWTrans.html">Transport Interface</A>.
48: <PRE>#include "<A HREF="HTFile.html">HTFile.h</A>"
49: </PRE>
50: <H3>
51: Content Negotiation
52: </H3>
53: <P>
54: When accessing the lccal file system, you can enable <I>content negotiation</I>
2.9 ! frystyk 55: as described in the <A HREF="http://www.w3.org/Protocols/">HTTP
2.6 frystyk 56: specification</A>. The content negotiation algorithm is based on file
57: suffixes as defined by the <A HREF="HTBind.html">Bind manager</A>. When looking
58: for a file you do <B>not</B> have to specify a suffix. Instead this module
59: looks for all alternatives with the same main name. For example, looking
60: for the file <I>Overview</I> can result in any of the files (or directories)
61: <I>Overview.txt</I>, <I>Overview.html</I>, <I>Overview.ps</I> etc. The selection
62: algorithm is based on the values of the preferences for language, media type,
63: encoding, etc. - exactly like a server would do with the <CODE>accept</CODE>
64: headers.
65: <PRE>#include "<A HREF="HTMulti.html">HTMulti.h</A>"
2.1 frystyk 66: </PRE>
2.6 frystyk 67: <P>
2.1 frystyk 68: End of FILE module
69: <PRE>
70: #ifdef __cplusplus
71: } /* end extern C definitions */
72: #endif
73:
74: #endif
75: </PRE>
2.6 frystyk 76: <P>
77: <HR>
2.4 frystyk 78: <ADDRESS>
2.9 ! frystyk 79: @(#) $Id: WWWFile.html,v 2.8 1998/05/04 19:37:49 frystyk Exp $
2.4 frystyk 80: </ADDRESS>
2.6 frystyk 81: </BODY></HTML>
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