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-rw-r--r--main/streams/php_stream_filter_api.h143
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diff --git a/main/streams/php_stream_filter_api.h b/main/streams/php_stream_filter_api.h
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--- a/main/streams/php_stream_filter_api.h
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-/*
- +----------------------------------------------------------------------+
- | PHP Version 4 |
- +----------------------------------------------------------------------+
- | Copyright (c) 1997-2003 The PHP Group |
- +----------------------------------------------------------------------+
- | This source file is subject to version 2.02 of the PHP license, |
- | that is bundled with this package in the file LICENSE, and is |
- | available at through the world-wide-web at |
- | http://www.php.net/license/2_02.txt. |
- | If you did not receive a copy of the PHP license and are unable to |
- | obtain it through the world-wide-web, please send a note to |
- | license@php.net so we can mail you a copy immediately. |
- +----------------------------------------------------------------------+
- | Author: Wez Furlong <wez@thebrainroom.com> |
- | With suggestions from: |
- | Moriyoshi Koizumi <moriyoshi@at.wakwak.com> |
- | Sara Golemon <pollita@php.net> |
- +----------------------------------------------------------------------+
- */
-
-/* $Id$ */
-
-/* The filter API works on the principle of "Bucket-Brigades". This is
- * partially inspired by the Apache 2 method of doing things, although
- * it is intentially a light-weight implementation.
- *
- * Each stream can have a chain of filters for reading and another for writing.
- *
- * When data is written to the stream, is is placed into a bucket and placed at
- * the start of the input brigade.
- *
- * The first filter in the chain is invoked on the brigade and (depending on
- * it's return value), the next filter is invoked and so on.
- * */
-
-#define PHP_STREAM_FILTER_READ 0x0001
-#define PHP_STREAM_FILTER_WRITE 0x0002
-#define PHP_STREAM_FILTER_ALL (PHP_STREAM_FILTER_READ | PHP_STREAM_FILTER_WRITE)
-
-typedef struct _php_stream_bucket php_stream_bucket;
-typedef struct _php_stream_bucket_brigade php_stream_bucket_brigade;
-
-struct _php_stream_bucket {
- php_stream_bucket *next, *prev;
- php_stream_bucket_brigade *brigade;
-
- char *buf;
- size_t buflen;
- /* if non-zero, buf should be pefreed when the bucket is destroyed */
- int own_buf;
- int is_persistent;
-
- /* destroy this struct when refcount falls to zero */
- int refcount;
-};
-
-struct _php_stream_bucket_brigade {
- php_stream_bucket *head, *tail;
-};
-
-typedef enum {
- PSFS_ERR_FATAL, /* error in data stream */
- PSFS_FEED_ME, /* filter needs more data; stop processing chain until more is available */
- PSFS_PASS_ON, /* filter generated output buckets; pass them on to next in chain */
-} php_stream_filter_status_t;
-
-/* Buckets API. */
-PHPAPI php_stream_bucket *php_stream_bucket_new(php_stream *stream, char *buf, size_t buflen, int own_buf, int buf_persistent TSRMLS_DC);
-PHPAPI int php_stream_bucket_split(php_stream_bucket *in, php_stream_bucket **left, php_stream_bucket **right, size_t length TSRMLS_DC);
-PHPAPI void php_stream_bucket_delref(php_stream_bucket *bucket TSRMLS_DC);
-#define php_stream_bucket_addref(bucket) (bucket)->refcount++
-PHPAPI void php_stream_bucket_prepend(php_stream_bucket_brigade *brigade, php_stream_bucket *bucket TSRMLS_DC);
-PHPAPI void php_stream_bucket_append(php_stream_bucket_brigade *brigade, php_stream_bucket *bucket TSRMLS_DC);
-PHPAPI void php_stream_bucket_unlink(php_stream_bucket *bucket TSRMLS_DC);
-PHPAPI php_stream_bucket *php_stream_bucket_make_writeable(php_stream_bucket *bucket TSRMLS_DC);
-
-#define PSFS_FLAG_NORMAL 0 /* regular read/write */
-#define PSFS_FLAG_FLUSH_INC 1 /* an incremental flush */
-#define PSFS_FLAG_FLUSH_CLOSE 2 /* final flush prior to closing */
-
-typedef struct _php_stream_filter_ops {
-
- php_stream_filter_status_t (*filter)(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- TSRMLS_DC);
-
- void (*dtor)(php_stream_filter *thisfilter TSRMLS_DC);
-
- const char *label;
-
-} php_stream_filter_ops;
-
-typedef struct _php_stream_filter_chain {
- php_stream_filter *head, *tail;
-} php_stream_filter_chain;
-
-struct _php_stream_filter {
- php_stream_filter_ops *fops;
- void *abstract; /* for use by filter implementation */
- php_stream_filter *next;
- php_stream_filter *prev;
- int is_persistent;
-
- /* link into stream and chain */
- php_stream_filter_chain *chain;
-
- /* buffered buckets */
- php_stream_bucket_brigade buffer;
-};
-
-/* stack filter onto a stream */
-PHPAPI void php_stream_filter_prepend(php_stream_filter_chain *chain, php_stream_filter *filter);
-PHPAPI void php_stream_filter_append(php_stream_filter_chain *chain, php_stream_filter *filter);
-PHPAPI php_stream_filter *php_stream_filter_remove(php_stream_filter *filter, int call_dtor TSRMLS_DC);
-PHPAPI void php_stream_filter_free(php_stream_filter *filter TSRMLS_DC);
-PHPAPI php_stream_filter *_php_stream_filter_alloc(php_stream_filter_ops *fops, void *abstract, int persistent STREAMS_DC TSRMLS_DC);
-#define php_stream_filter_alloc(fops, thisptr, persistent) _php_stream_filter_alloc((fops), (thisptr), (persistent) STREAMS_CC TSRMLS_CC)
-#define php_stream_filter_alloc_rel(fops, thisptr, persistent) _php_stream_filter_alloc((fops), (thisptr), (persistent) STREAMS_REL_CC TSRMLS_CC)
-
-#define php_stream_is_filtered(stream) ((stream)->readfilters.head || (stream)->writefilters.head)
-
-typedef struct _php_stream_filter_factory {
- php_stream_filter *(*create_filter)(const char *filtername, const char *filterparams, int filterparamslen, int persistent TSRMLS_DC);
-} php_stream_filter_factory;
-
-PHPAPI int php_stream_filter_register_factory(const char *filterpattern, php_stream_filter_factory *factory TSRMLS_DC);
-PHPAPI int php_stream_filter_unregister_factory(const char *filterpattern TSRMLS_DC);
-PHPAPI php_stream_filter *php_stream_filter_create(const char *filtername, const char *filterparams, int filterparamslen, int persistent TSRMLS_DC);
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- * vim600: sw=4 ts=4 fdm=marker
- * vim<600: sw=4 ts=4
- */
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