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935ced1edd
Summary: Ref T7785. This prepares for (but does not yet use) a pure PHP implementation of Figlet parsing and rendering. Figlet is somewhat complex, but a parser already exists in PEAR. I'll make sure it's suitable and hook it up in the next diff. Test Plan: N/A, code not reachable Reviewers: chad Reviewed By: chad Maniphest Tasks: T9408, T7785 Differential Revision: https://secure.phabricator.com/D14101
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*
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* zipio.h - stdio emulation library for reading zip files
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*
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* Version 1.1.2
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*/
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/*
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* Copyright (C) 1995, Edward B. Hamrick
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the copyright holders
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* not be used in advertising or publicity pertaining to distribution of
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* the software without specific, written prior permission. The copyright
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* holders makes no representations about the suitability of this software
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* for any purpose. It is provided "as is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
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* IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT
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* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* Changes from 1.1 to 1.1.1:
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* Changed "z*" functions to "Z*" to avoid namespace pollution.
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* Added "zungetc" macro.
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* John Cowan <cowan@ccil.org>
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*
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* Changes from 1.1.1 to 1.1.2:
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* Relicensed under the MIT license, with consent of the copyright holders.
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* Claudio Matsuoka (Jan 11 2011)
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*/
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/*
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* This library of routines has the same calling sequence as
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* the stdio.h routines for reading files. If these routines
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* detect that they are reading from a zip file, they transparently
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* unzip the file and make the application think they're reading
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* from the uncompressed file.
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*
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* Note that this library is designed to work for zip files that
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* use the deflate compression method, and to read the first file
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* within the zip archive.
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*
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* There are a number of tunable parameters in the reference
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* implementation relating to in-memory decompression and the
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* use of temporary files.
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*
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* Particular care was taken to make the Zgetc() macro work
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* as efficiently as possible. When reading an uncompressed
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* file with Zgetc(), it has exactly the same performance as
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* when using getc(). WHen reading a compressed file with
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* Zgetc(), it has the same performance as fread(). The total
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* CPU overhead for decompression is about 50 cycles per byte.
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*
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* The Zungetc() macro is quite limited. It ignores the character
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* specified for pushback, and essentially just forces the last
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* character read to be re-read. This is essential when parsing
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* numbers and such. (1.1.1)
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*
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* There are a few stdio routines that aren't represented here, but
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* they can be layered on top of these routines if needed.
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*/
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#ifndef __ZIPIO_H
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#define __ZIPIO_H
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#include <stdio.h>
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typedef struct {
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int len;
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unsigned char *ptr;
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} ZFILE;
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#define Zgetc(f) \
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((--((f)->len) >= 0) \
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? (unsigned char)(*(f)->ptr++) \
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: _Zgetc (f))
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#define Zungetc(c,f) \
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((f)->ptr--, (f)->len++, (c))
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#ifdef __cplusplus
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extern "C" {
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#endif
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ZFILE *Zopen(const char *path, const char *mode);
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int _Zgetc(ZFILE *stream);
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size_t Zread(void *ptr, size_t size, size_t n, ZFILE *stream);
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int Zseek(ZFILE *stream, long offset, int whence);
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long Ztell(ZFILE *stream);
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int Zclose(ZFILE *stream);
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#ifdef __cplusplus
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}
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#endif
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#endif
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