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b008274afd
We better do this once and for all instead of cluttering all future commits with diffs of trailing white spaces. In the majority of cases blank or single lines are affected and thus this change won't disturb a git blame too much. For future commits the pre-commit scripts checks that this won't happen again.
426 lines
16 KiB
C
426 lines
16 KiB
C
/* estream.h - Extended stream I/O Library
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* Copyright (C) 2004, 2005, 2006, 2007, 2010 g10 Code GmbH
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*
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* This file is part of Libestream.
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*
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* Libestream is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* Libestream is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Libestream; if not, see <http://www.gnu.org/licenses/>.
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*
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* ALTERNATIVELY, Libestream may be distributed under the terms of the
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* following license, in which case the provisions of this license are
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* required INSTEAD OF the GNU General Public License. If you wish to
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* allow use of your version of this file only under the terms of the
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* GNU General Public License, and not to allow others to use your
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* version of this file under the terms of the following license,
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* indicate your decision by deleting this paragraph and the license
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* below.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, and the entire permission notice in its entirety,
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* including the disclaimer of warranties.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ESTREAM_H
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#define ESTREAM_H
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stdio.h>
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/* To use this file with libraries the following macro is useful:
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#define _ESTREAM_EXT_SYM_PREFIX _foo_
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This prefixes all external symbols with "_foo_".
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*/
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#ifdef _ESTREAM_EXT_SYM_PREFIX
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#ifndef _ESTREAM_PREFIX
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#define _ESTREAM_PREFIX1(x,y) x ## y
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#define _ESTREAM_PREFIX2(x,y) _ESTREAM_PREFIX1(x,y)
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#define _ESTREAM_PREFIX(x) _ESTREAM_PREFIX2(_ESTREAM_EXT_SYM_PREFIX,x)
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#endif /*_ESTREAM_PREFIX*/
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#define es_fopen _ESTREAM_PREFIX(es_fopen)
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#define es_mopen _ESTREAM_PREFIX(es_mopen)
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#define es_fopenmem _ESTREAM_PREFIX(es_fopenmem)
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#define es_fdopen _ESTREAM_PREFIX(es_fdopen)
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#define es_fdopen_nc _ESTREAM_PREFIX(es_fdopen_nc)
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#define es_sysopen _ESTREAM_PREFIX(es_sysopen)
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#define es_sysopen_nc _ESTREAM_PREFIX(es_sysopen_nc)
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#define es_fpopen _ESTREAM_PREFIX(es_fpopen)
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#define es_fpopen_nc _ESTREAM_PREFIX(es_fpopen_nc)
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#define _es_set_std_fd _ESTREAM_PREFIX(_es_set_std_fd)
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#define _es_get_std_stream _ESTREAM_PREFIX(_es_get_std_stream)
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#define es_freopen _ESTREAM_PREFIX(es_freopen)
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#define es_fopencookie _ESTREAM_PREFIX(es_fopencookie)
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#define es_fclose _ESTREAM_PREFIX(es_fclose)
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#define es_onclose _ESTREAM_PREFIX(es_onclose)
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#define es_fileno _ESTREAM_PREFIX(es_fileno)
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#define es_fileno_unlocked _ESTREAM_PREFIX(es_fileno_unlocked)
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#define es_flockfile _ESTREAM_PREFIX(es_flockfile)
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#define es_ftrylockfile _ESTREAM_PREFIX(es_ftrylockfile)
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#define es_funlockfile _ESTREAM_PREFIX(es_funlockfile)
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#define es_feof _ESTREAM_PREFIX(es_feof)
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#define es_feof_unlocked _ESTREAM_PREFIX(es_feof_unlocked)
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#define es_ferror _ESTREAM_PREFIX(es_ferror)
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#define es_ferror_unlocked _ESTREAM_PREFIX(es_ferror_unlocked)
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#define es_clearerr _ESTREAM_PREFIX(es_clearerr)
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#define es_clearerr_unlocked _ESTREAM_PREFIX(es_clearerr_unlocked)
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#define es_fflush _ESTREAM_PREFIX(es_fflush)
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#define es_fseek _ESTREAM_PREFIX(es_fseek)
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#define es_fseeko _ESTREAM_PREFIX(es_fseeko)
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#define es_ftell _ESTREAM_PREFIX(es_ftell)
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#define es_ftello _ESTREAM_PREFIX(es_ftello)
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#define es_rewind _ESTREAM_PREFIX(es_rewind)
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#define es_fgetc _ESTREAM_PREFIX(es_fgetc)
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#define es_fputc _ESTREAM_PREFIX(es_fputc)
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#define _es_getc_underflow _ESTREAM_PREFIX(_es_getc_underflow)
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#define _es_putc_overflow _ESTREAM_PREFIX(_es_putc_overflow)
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#define es_ungetc _ESTREAM_PREFIX(es_ungetc)
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#define es_read _ESTREAM_PREFIX(es_read)
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#define es_write _ESTREAM_PREFIX(es_write)
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#define es_write_sanitized _ESTREAM_PREFIX(es_write_sanitized)
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#define es_write_hexstring _ESTREAM_PREFIX(es_write_hexstring)
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#define es_fread _ESTREAM_PREFIX(es_fread)
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#define es_fwrite _ESTREAM_PREFIX(es_fwrite)
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#define es_fgets _ESTREAM_PREFIX(es_fgets)
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#define es_fputs _ESTREAM_PREFIX(es_fputs)
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#define es_fputs_unlocked _ESTREAM_PREFIX(es_fputs_unlocked)
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#define es_getline _ESTREAM_PREFIX(es_getline)
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#define es_read_line _ESTREAM_PREFIX(es_read_line)
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#define es_free _ESTREAM_PREFIX(es_free)
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#define es_fprintf _ESTREAM_PREFIX(es_fprintf)
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#define es_fprintf_unlocked _ESTREAM_PREFIX(es_fprintf_unlocked)
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#define es_printf _ESTREAM_PREFIX(es_printf)
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#define es_printf_unlocked _ESTREAM_PREFIX(es_printf_unlocked)
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#define es_vfprintf _ESTREAM_PREFIX(es_vfprint)
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#define es_vfprintf_unlocked _ESTREAM_PREFIX(es_vfprint_unlocked)
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#define es_setvbuf _ESTREAM_PREFIX(es_setvbuf)
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#define es_setbuf _ESTREAM_PREFIX(es_setbuf)
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#define es_set_binary _ESTREAM_PREFIX(es_set_binary)
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#define es_tmpfile _ESTREAM_PREFIX(es_tmpfile)
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#define es_opaque_set _ESTREAM_PREFIX(es_opaque_set)
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#define es_opaque_get _ESTREAM_PREFIX(es_opaque_get)
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#define es_fname_set _ESTREAM_PREFIX(es_fname_set)
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#define es_fname_get _ESTREAM_PREFIX(es_fname_get)
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#define es_write_sanitized_utf8_buffer \
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_ESTREAM_PREFIX(es_write_sanitized_utf8_buffer)
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#endif /*_ESTREAM_EXT_SYM_PREFIX*/
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#ifdef __cplusplus
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extern "C"
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{
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#if 0
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}
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#endif
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#endif
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/* Forward declaration for the (opaque) internal type. */
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struct estream_internal;
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/* The definition of this struct is entirely private. You must not
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use it for anything. It is only here so some functions can be
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implemented as macros. */
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struct es__stream
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{
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/* The layout of this struct must never change. It may be grown,
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but only if all functions which access the new members are
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versioned. */
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/* A pointer to the stream buffer. */
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unsigned char *buffer;
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/* The size of the buffer in bytes. */
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size_t buffer_size;
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/* The length of the usable data in the buffer, only valid when in
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read mode (see flags). */
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size_t data_len;
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/* The current position of the offset pointer, valid in read and
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write mode. */
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size_t data_offset;
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size_t data_flushed;
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unsigned char *unread_buffer;
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size_t unread_buffer_size;
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/* The number of unread bytes. */
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size_t unread_data_len;
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/* Various flags. */
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struct {
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unsigned int writing: 1;
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unsigned int reserved: 7;
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} flags;
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/* A pointer to our internal data for this stream. */
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struct estream_internal *intern;
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};
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/* The opaque type for an estream. */
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typedef struct es__stream *estream_t;
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typedef ssize_t (*es_cookie_read_function_t) (void *cookie,
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void *buffer, size_t size);
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typedef ssize_t (*es_cookie_write_function_t) (void *cookie,
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const void *buffer,
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size_t size);
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typedef int (*es_cookie_seek_function_t) (void *cookie,
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off_t *pos, int whence);
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typedef int (*es_cookie_close_function_t) (void *cookie);
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typedef struct es_cookie_io_functions
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{
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es_cookie_read_function_t func_read;
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es_cookie_write_function_t func_write;
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es_cookie_seek_function_t func_seek;
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es_cookie_close_function_t func_close;
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} es_cookie_io_functions_t;
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enum es_syshd_types
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{
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ES_SYSHD_NONE, /* No system handle available. */
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ES_SYSHD_FD, /* A file descriptor as returned by open(). */
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ES_SYSHD_SOCK, /* A socket as returned by socket(). */
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ES_SYSHD_RVID, /* A rendevous id (see libassuan's gpgcedev.c). */
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ES_SYSHD_HANDLE /* A HANDLE object (Windows). */
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};
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typedef struct
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{
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enum es_syshd_types type;
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union {
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int fd;
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int sock;
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int rvid;
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void *handle;
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} u;
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} es_syshd_t;
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#ifndef _ESTREAM_GCC_A_PRINTF
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#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
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# define _ESTREAM_GCC_A_PRINTF( f, a ) __attribute__ ((format (printf,f,a)))
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#else
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# define _ESTREAM_GCC_A_PRINTF( f, a )
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#endif
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#endif /*_ESTREAM_GCC_A_PRINTF*/
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#ifndef ES__RESTRICT
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# if (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 92))
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# define ES__RESTRICT __restrict__
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# endif
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# endif
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#endif
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#ifndef ES__RESTRICT
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# define ES__RESTRICT
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#endif
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int es_init (void);
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estream_t es_fopen (const char *ES__RESTRICT path,
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const char *ES__RESTRICT mode);
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estream_t es_mopen (unsigned char *ES__RESTRICT data,
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size_t data_n, size_t data_len,
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unsigned int grow,
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void *(*func_realloc) (void *mem, size_t size),
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void (*func_free) (void *mem),
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const char *ES__RESTRICT mode);
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estream_t es_fopenmem (size_t memlimit, const char *ES__RESTRICT mode);
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estream_t es_fdopen (int filedes, const char *mode);
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estream_t es_fdopen_nc (int filedes, const char *mode);
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estream_t es_sysopen (es_syshd_t *syshd, const char *mode);
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estream_t es_sysopen_nc (es_syshd_t *syshd, const char *mode);
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estream_t es_fpopen (FILE *fp, const char *mode);
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estream_t es_fpopen_nc (FILE *fp, const char *mode);
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estream_t es_freopen (const char *ES__RESTRICT path,
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const char *ES__RESTRICT mode,
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estream_t ES__RESTRICT stream);
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estream_t es_fopencookie (void *ES__RESTRICT cookie,
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const char *ES__RESTRICT mode,
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es_cookie_io_functions_t functions);
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int es_fclose (estream_t stream);
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int es_onclose (estream_t stream, int mode,
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void (*fnc) (estream_t, void*), void *fnc_value);
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int es_fileno (estream_t stream);
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int es_fileno_unlocked (estream_t stream);
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int es_syshd (estream_t stream, es_syshd_t *syshd);
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int es_syshd_unlocked (estream_t stream, es_syshd_t *syshd);
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void _es_set_std_fd (int no, int fd);
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estream_t _es_get_std_stream (int fd);
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#define es_stdin _es_get_std_stream (0)
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#define es_stdout _es_get_std_stream (1)
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#define es_stderr _es_get_std_stream (2)
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void es_flockfile (estream_t stream);
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int es_ftrylockfile (estream_t stream);
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void es_funlockfile (estream_t stream);
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int es_feof (estream_t stream);
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int es_feof_unlocked (estream_t stream);
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int es_ferror (estream_t stream);
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int es_ferror_unlocked (estream_t stream);
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void es_clearerr (estream_t stream);
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void es_clearerr_unlocked (estream_t stream);
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int es_fflush (estream_t stream);
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int es_fseek (estream_t stream, long int offset, int whence);
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int es_fseeko (estream_t stream, off_t offset, int whence);
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long int es_ftell (estream_t stream);
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off_t es_ftello (estream_t stream);
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void es_rewind (estream_t stream);
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int es_fgetc (estream_t stream);
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int es_fputc (int c, estream_t stream);
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int _es_getc_underflow (estream_t stream);
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int _es_putc_overflow (int c, estream_t stream);
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#define es_getc_unlocked(stream) \
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(((!(stream)->flags.writing) \
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&& ((stream)->data_offset < (stream)->data_len) \
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&& (! (stream)->unread_data_len)) \
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? ((int) (stream)->buffer[((stream)->data_offset)++]) \
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: _es_getc_underflow ((stream)))
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#define es_putc_unlocked(c, stream) \
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(((stream)->flags.writing \
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&& ((stream)->data_offset < (stream)->buffer_size) \
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&& (c != '\n')) \
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? ((int) ((stream)->buffer[((stream)->data_offset)++] = (c))) \
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: _es_putc_overflow ((c), (stream)))
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#define es_getc(stream) es_fgetc (stream)
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#define es_putc(c, stream) es_fputc (c, stream)
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int es_ungetc (int c, estream_t stream);
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int es_read (estream_t ES__RESTRICT stream,
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void *ES__RESTRICT buffer, size_t bytes_to_read,
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size_t *ES__RESTRICT bytes_read);
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int es_write (estream_t ES__RESTRICT stream,
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const void *ES__RESTRICT buffer, size_t bytes_to_write,
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size_t *ES__RESTRICT bytes_written);
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int es_write_sanitized (estream_t ES__RESTRICT stream,
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const void *ES__RESTRICT buffer, size_t length,
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const char *delimiters,
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size_t *ES__RESTRICT bytes_written);
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int es_write_hexstring (estream_t ES__RESTRICT stream,
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const void *ES__RESTRICT buffer, size_t length,
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int reserved, size_t *ES__RESTRICT bytes_written);
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size_t es_fread (void *ES__RESTRICT ptr, size_t size, size_t nitems,
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estream_t ES__RESTRICT stream);
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size_t es_fwrite (const void *ES__RESTRICT ptr, size_t size, size_t memb,
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estream_t ES__RESTRICT stream);
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char *es_fgets (char *ES__RESTRICT s, int n, estream_t ES__RESTRICT stream);
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int es_fputs (const char *ES__RESTRICT s, estream_t ES__RESTRICT stream);
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int es_fputs_unlocked (const char *ES__RESTRICT s,
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estream_t ES__RESTRICT stream);
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ssize_t es_getline (char *ES__RESTRICT *ES__RESTRICT lineptr,
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size_t *ES__RESTRICT n,
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estream_t stream);
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ssize_t es_read_line (estream_t stream,
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char **addr_of_buffer, size_t *length_of_buffer,
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size_t *max_length);
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void es_free (void *a);
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int es_fprintf (estream_t ES__RESTRICT stream,
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const char *ES__RESTRICT format, ...)
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_ESTREAM_GCC_A_PRINTF(2,3);
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int es_fprintf_unlocked (estream_t ES__RESTRICT stream,
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const char *ES__RESTRICT format, ...)
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_ESTREAM_GCC_A_PRINTF(2,3);
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int es_printf (const char *ES__RESTRICT format, ...)
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_ESTREAM_GCC_A_PRINTF(1,2);
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int es_printf_unlocked (const char *ES__RESTRICT format, ...)
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_ESTREAM_GCC_A_PRINTF(1,2);
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int es_vfprintf (estream_t ES__RESTRICT stream,
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const char *ES__RESTRICT format, va_list ap)
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_ESTREAM_GCC_A_PRINTF(2,0);
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int es_vfprintf_unlocked (estream_t ES__RESTRICT stream,
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const char *ES__RESTRICT format, va_list ap)
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_ESTREAM_GCC_A_PRINTF(2,0);
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char *es_asprintf (const char *ES__RESTRICT format, ...)
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_ESTREAM_GCC_A_PRINTF(1,2);
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char *es_vasprintf (const char *ES__RESTRICT format, va_list ap)
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_ESTREAM_GCC_A_PRINTF(1,0);
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int es_setvbuf (estream_t ES__RESTRICT stream,
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char *ES__RESTRICT buf, int mode, size_t size);
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void es_setbuf (estream_t ES__RESTRICT stream, char *ES__RESTRICT buf);
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void es_set_binary (estream_t stream);
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estream_t es_tmpfile (void);
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void es_opaque_set (estream_t ES__RESTRICT stream, void *ES__RESTRICT opaque);
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void *es_opaque_get (estream_t stream);
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void es_fname_set (estream_t stream, const char *fname);
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const char *es_fname_get (estream_t stream);
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#ifdef GNUPG_MAJOR_VERSION
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int es_write_sanitized_utf8_buffer (estream_t stream,
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const void *buffer, size_t length,
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const char *delimiters,
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size_t *bytes_written);
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#endif /*GNUPG_MAJOR_VERSION*/
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#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
#endif /*ESTREAM_H*/
|