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128 lines
5.0 KiB
C
Executable File
128 lines
5.0 KiB
C
Executable File
/*
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+----------------------------------------------------------------------+
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| PHP version 4.0 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997, 1998, 1999, 2000, 2001 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.02 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.php.net/license/2_02.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: |
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| Wez Furlong (wez@thebrainroom.com) |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_STREAMS_H
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#define PHP_STREAMS_H
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#if HAVE_PHP_STREAM
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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typedef struct _php_stream php_stream;
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typedef struct _php_stream_ops {
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/* stdio like functions - these are mandatory! */
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size_t (*write)(php_stream * stream, const char * buf, size_t count);
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size_t (*read)(php_stream * stream, char * buf, size_t count);
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int (*close)(php_stream * stream);
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int (*flush)(php_stream * stream);
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/* these are optional */
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int (*seek)(php_stream * stream, off_t offset, int whence);
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/* used only in unbuffered mode */
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char * (*gets)(php_stream * stream, char * buf, size_t size);
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int (*cast)(php_stream * stream, int castas, void ** ret);
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const char * label; /* label for this ops structure */
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} php_stream_ops;
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typedef struct _php_stream_buffer {
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char * buffer;
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size_t buflen;
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int dirty; /* 1 if we need to commit data */
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off_t readpos;
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off_t writepos;
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size_t chunksize; /* amount to commit in one operation */
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int persistent;
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} php_stream_buffer;
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PHPAPI int php_stream_buf_init(php_stream_buffer * buffer, int persistent, size_t chunksize);
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PHPAPI int php_stream_buf_cleanup(php_stream_buffer * buffer);
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/* add data into buffer, growing it if required */
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PHPAPI int php_stream_buf_append(php_stream_buffer * buffer, const char * buf, size_t size);
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/* read data out of buffer */
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PHPAPI size_t php_stream_buf_read(php_stream_buffer * buffer, char * buf, size_t size);
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PHPAPI int php_stream_buf_overwrite(php_stream_buffer * buffer, const char * buf, size_t size);
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struct _php_stream {
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php_stream_ops * ops;
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void * abstract; /* convenience pointer for abstraction */
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int eof;
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/* for convenience for sockets */
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int is_blocked;
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struct timeval timeout;
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int timeout_event;
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int readahead; /* number of chunks to read-ahead */
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int is_persistent;
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char mode[16]; /* "rwb" etc. ala stdio */
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/* the stream can be buffered */
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int is_buffered;
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php_stream_buffer readbuf;
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FILE * stdiocast; /* cache this, otherwise we might leak! */
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}; /* php_stream */
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/* allocate a new stream for a particular ops */
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PHPAPI php_stream * php_stream_alloc(php_stream_ops * ops, void * abstract, size_t bufsize, int persistent, const char * mode);
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PHPAPI int php_stream_free(php_stream * stream, int call_dtor);
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#define php_stream_close(stream) php_stream_free(stream, 1)
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/* seeking is only supported for reading! */
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PHPAPI int php_stream_seek(php_stream * stream, off_t offset, int whence);
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PHPAPI off_t php_stream_tell(php_stream * stream);
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PHPAPI size_t php_stream_read(php_stream * stream, char * buf, size_t count);
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PHPAPI size_t php_stream_write(php_stream * stream, const char * buf, size_t count);
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PHPAPI int php_stream_eof(php_stream * stream);
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PHPAPI int php_stream_getc(php_stream * stream);
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PHPAPI int php_stream_flush(php_stream * stream);
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PHPAPI char *php_stream_gets(php_stream * stream, char *buf, size_t maxlen);
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/* operations for a stdio FILE; the FILE * must be placed in stream->abstract */
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extern php_stream_ops php_stream_stdio_ops;
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/* like fopen, but returns a stream */
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PHPAPI php_stream * php_stream_fopen(const char * filename, const char * mode);
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/* coerce the stream into some other form */
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/* cast as a stdio FILE * */
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#define PHP_STREAM_AS_STDIO 0
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/* cast as a POSIX fd or socketd */
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#define PHP_STREAM_AS_FD 1
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/* cast as a socketd */
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#define PHP_STREAM_AS_SOCKETD 2
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/* warning: once you have cast a stream as a FILE*, you probably should not use
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the php_stream_XXX api after that point, or you will confuse the buffering
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in FILE* and/or php_stream *
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*/
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PHPAPI int php_stream_cast(php_stream * stream, int castas, void ** ret, int show_err);
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/* use this to check if a stream can be cast into another form */
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#define php_stream_can_cast(stream, as) php_stream_cast(stream, as, NULL, 0)
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#endif /* HAVE_PHP_STREAM */
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#endif
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