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/*
* Copyright (c) 1994, 1995. Netscape Communications Corporation. All
* rights reserved.
*
* Use of this software is governed by the terms of the license agreement for
* the Netscape Communications or Netscape Comemrce Server between the
* parties.
*/
/* ------------------------------------------------------------------------ */
/*
* cinfo.h: Content Information for a file, i.e. its type, etc.
*
* See cinfo.c for dependency information.
*
* Rob McCool
*/
#ifndef CINFO_H
#define CINFO_H
/* ------------------------------ Constants ------------------------------- */
/*
* This will be the first string in the file, followed by x.x version
* where x is an integer.
*
* Updated due to trendy name change
*/
#define MCC_MT_MAGIC "#--Mosaic Communications Corporation MIME Information"
#define MCC_MT_MAGIC_LEN 53
#define NCC_MT_MAGIC "#--Netscape Communications Corporation MIME Information"
#define NCC_MT_MAGIC_LEN 55
/* The character which separates extensions with cinfo_find */
#define CINFO_SEPARATOR '.'
/* The maximum length of a line in this file */
#define CINFO_MAX_LEN 1024
/* The hash function for the database. Hashed on extension. */
#include <ctype.h>
#define CINFO_HASH(s) (isalpha(s[0]) ? tolower(s[0]) - 'a' : 26)
/* The hash table size for that function */
#define CINFO_HASHSIZE 27
/* ------------------------------ Structures ------------------------------ */
/*
* The ContentInfo structure.
*
* Currently, we support the following attributes:
*
* 1. Type: This identifies what kind of data is in the file.
* 2. Encoding: Identifies any compression or otherwise content-independent
* transformation which has been applied to the file (uuencode, etc.)
* 3. Language: Identifies the language a text document is in.
* 4. Description: A text string describing the file.
* 5. Viewer: The program to use to view the file.
*
* Multiple items are separated with a comma, e.g.
* encoding="x-gzip, x-uuencode"
*/
typedef struct {
char *type;
char *encoding;
char *language;
} cinfo;
/* ------------------------------ Prototypes ------------------------------ */
/*
* cinfo_init initializes the content info system. Call this before
* cinfo_merge.
*/
void cinfo_init(void);
/*
* cinfo_terminate frees the database for shutdown.
*/
void cinfo_terminate(void);
/*
* cinfo_merge merges the contents of the given filename with the current
* cinfo database. It returns NULL upon success and a string (which you
* must deallocate) upon error.
*/
char *cinfo_merge(char *fn);
/*
* cinfo_find finds any content information for the given uri. The file name
* is the string following the last / in the uri. Multiple extensions are
* separated by CINFO_SEPARATOR. You may pass in a filename instead of uri.
*
* Returns a newly allocated cinfo structure with the information it
* finds. The elements of this structure are coming right out of the types
* database and so if you change it or want to keep it around for long you
* should strdup it. You should free only the structure itself when finished
* with it.
*
* If there is no information for any one of the extensions it
* finds, it will ignore that extension. If it cannot find information for
* any of the extensions, it will return NULL.
*/
cinfo *cinfo_find(char *uri);
/*
* cinfo_lookup finds the information about the given content-type, and
* returns a cinfo structure so you can look up description and icon.
*/
cinfo *cinfo_lookup(char *type);
/*
* cinfo_dump_database dumps the current database to the given file desc.
*/
#include <stdio.h>
void cinfo_dump_database(FILE *dump);
#endif
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