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126 lines
3.0 KiB
126 lines
3.0 KiB
/*
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This file was derived from the libwww code, version 2.15, from CERN.
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A number of modifications have been made by Spyglass.
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[email protected]
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*/
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/* HTParse: URL parsing in the WWW Library
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HTPARSE
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This module of the WWW library contains code to parse URLs and various related things.
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Implemented by HTParse.c .
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*/
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#ifndef HTPARSE_H
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#define HTPARSE_H
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/*
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The following are flag bits which may be ORed together to form a number to give the
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'wanted' argument to HTParse.
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*/
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#define PARSE_ACCESS 16
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#define PARSE_HOST 8
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#define PARSE_PATH 4
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#define PARSE_ANCHOR 2
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#define PARSE_PUNCTUATION 1
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#define PARSE_ALL 31
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/*
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HTParse: Parse a URL relative to another URL
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This returns those parts of a name which are given (and requested) substituting bits
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from the related name where necessary.
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ON ENTRY
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aName A filename given
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relatedName A name relative to which aName is to be parsed
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wanted A mask for the bits which are wanted.
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ON EXIT,
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returns A pointer to a malloc'd string which MUST BE FREED
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*/
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extern char *HTParse(const char *aName, const char *relatedName, int wanted);
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/*
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HTStrip: Strip white space off a string
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ON EXIT
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Return value points to first non-white character, or to 0 if none.
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All trailing white space is OVERWRITTEN with zero.
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*/
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extern char *HTStrip(char *s);
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/*
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HTSimplify: Simplify a UTL
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A URL is allowed to contain the seqeunce xxx/../ which may be replaced by "" , and the
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seqeunce "/./" which may be replaced by "/". Simplification helps us recognize
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duplicate filenames. It doesn't deal with soft links, though. The new (shorter)
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filename overwrites the old.
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*/
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/*
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** Thus, /etc/junk/../fred becomes /etc/fred
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** /etc/junk/./fred becomes /etc/junk/fred
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*/
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extern void HTSimplify(char *filename);
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/*
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HTEscape: Encode unacceptable characters in string
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This funtion takes a string containing any sequence of ASCII characters, and returns a
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malloced string containing the same infromation but with all "unacceptable" characters
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represented in the form %xy where X and Y are two hex digits.
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*/
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extern char *HTEscape(CONST char *str, unsigned char mask, char protect);
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/*
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The following are valid mask values. The terms are the BNF names in the URL document.
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*/
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#define URL_XALPHAS (unsigned char) 1
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#define URL_XPALPHAS (unsigned char) 2
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#define URL_PATH (unsigned char) 4
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/*
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HTUnEscape: Decode %xx escaped characters
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This function takes a pointer to a string in which character smay have been encoded in
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%xy form, where xy is the acsii hex code for character 16x+y. The string is converted
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in place, as it will never grow.
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*/
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extern char *HTUnEscape(char *str);
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#endif /* HTPARSE_H */
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/*
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end of HTParse
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*/
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