diff options
| -rw-r--r-- | COPYING | 43 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | unlzw.c | 2 | ||||
| -rw-r--r-- | zio.c | 231 | ||||
| -rw-r--r-- | zio.h.in | 15 | ||||
| -rw-r--r-- | zioP.h | 19 |
6 files changed, 200 insertions, 112 deletions
@@ -1,12 +1,12 @@ - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. - Preamble + Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public @@ -15,7 +15,7 @@ software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by -the GNU Library General Public License instead.) You can apply it to +the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not @@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. - - GNU GENERAL PUBLIC LICENSE + + GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains @@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions: License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) - + These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in @@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code. - + 4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is @@ -225,7 +225,7 @@ impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License. - + 8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License @@ -255,7 +255,7 @@ make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. - NO WARRANTY + NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN @@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it @@ -291,7 +291,7 @@ convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> - Copyright (C) 19yy <name of author> + Copyright (C) <year> <name of author> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -303,17 +303,16 @@ the "copyright" line and a pointer to where the full notice is found. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: - Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. @@ -336,5 +335,5 @@ necessary. Here is a sample; alter the names: This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the -library. If this is what you want to do, use the GNU Library General +library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. @@ -8,7 +8,7 @@ LARGE = $(shell getconf LFS_CFLAGS) CFLAGS = $(RPM_OPT_FLAGS) -pipe -Wall -D_GNU_SOURCE -D_REENTRANT $(LARGE) CC = gcc MAJOR = 1 -MINOR = 00 +MINOR = 02 VERSION = $(MAJOR).$(MINOR) SONAME = libzio.so.$(MAJOR) LDMAP = -Wl,--version-script=zio.map @@ -12,7 +12,7 @@ * to be able to read during the main loop in unlzw() does its work. For this * nearly _all_ variables affected by the context switch are forward to this * structure, even the stack and the context type its self. - * The oringal source was adopted from the gzip version 1.3.7. + * The original source was adopted from the gzip version 1.3.7. */ #include <stdlib.h> @@ -4,11 +4,20 @@ * Copyright 2004 Werner Fink, 2004 SuSE LINUX AG, Germany. * Copyright 2006 Werner Fink, 2006 SuSE Products GmbH, Germany. * Copyright 2009 Werner Fink, 2009 SuSE Products GmbH, Germany. + * Copyright 2013 Werner Fink, 2013 SuSE Products GmbH, Germany. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation; version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Author: Werner Fink <werner@suse.de> */ @@ -42,6 +51,7 @@ static zio_int_t zseek(void *cookie, zio_off_t *poffset, int whence) errno = EINVAL; return -1; } + off_t offset = (off_t)*poffset; return (zio_int_t)gzseek((gzFile)cookie, (z_off_t)(*poffset), whence); } @@ -74,8 +84,9 @@ static cookie_io_functions_t ioz = { # endif typedef struct bzfile_s { - size_t total_out; + size_t position; BZFILE *file; + FILE *stdio; char *mode; char *path; int fd; @@ -90,7 +101,7 @@ static ssize_t bzread(void *cookie, char *buf, size_t count) if (bzf->file) len = (ssize_t)BZ2_bzread(bzf->file, (void*)buf, count); if (len > 0) - bzf->total_out += len; + bzf->position += len; out: if (len < 0) errno = EINVAL; @@ -104,9 +115,9 @@ static ssize_t bzwrite(void *cookie, const char *buf, size_t count) if (!bzf) goto out; if (bzf->file) - len = (ssize_t)BZ2_bzread(bzf->file, (void*)buf, count); + len = (ssize_t)BZ2_bzwrite(bzf->file, (void*)buf, count); if (len > 0) - bzf->total_out += len; + bzf->position += len; out: if (len < 0) errno = EINVAL; @@ -116,24 +127,29 @@ out: static zio_int_t bzseek(void *cookie, zio_off_t *poffset, int whence) { bzfile_t *bzf = (bzfile_t*)cookie; - off_t offset = (off_t)*poffset; - off_t oldpos, newpos; + off_t offset, curpos, newpos; if (!bzf) { errno = EINVAL; return -1; } - oldpos = (off_t)bzf->total_out; + offset = (off_t)*poffset; + curpos = (off_t)bzf->position; + switch (whence) { case SEEK_SET: - if (offset < 0) + if (offset < 0) { + errno = EINVAL; return -1; + } newpos = offset; break; case SEEK_CUR: - if ((offset < 0 && (off_t)(-1 * offset) > oldpos) || (offset > 0 && (offset+oldpos) < oldpos)) + if ((offset < 0 && (off_t)(-1 * offset) > curpos) || (offset > 0 && (offset+curpos) < curpos)) { + errno = EINVAL; return -1; - newpos = (off_t)bzf->total_out + offset; + } + newpos = curpos + offset; break; case SEEK_END: newpos = -1; @@ -143,7 +159,7 @@ static zio_int_t bzseek(void *cookie, zio_off_t *poffset, int whence) return -1; } - if (whence != SEEK_END && newpos < oldpos) { + if (whence != SEEK_END && newpos < curpos) { int status = BZ2_bzflush(bzf->file); BZ2_bzclose(bzf->file); if (status < 0) { @@ -163,27 +179,36 @@ static zio_int_t bzseek(void *cookie, zio_off_t *poffset, int whence) errno = EINVAL; return -1; } - bzf->total_out = 0; + curpos = (off_t)0; + bzf->position = curpos; } - if (newpos == oldpos) - return oldpos; - else { + if (newpos == curpos) + goto out; + if (newpos == -1) { + char buf[1<<12]; + while (1) { + ssize_t got_size = BZ2_bzread(bzf->file, buf, sizeof(buf)); + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; + } + } else { char buf[1<<12]; - while (newpos > oldpos || newpos == -1) { - size_t req_size = MIN(sizeof(buf), newpos - oldpos); + while (newpos > curpos) { + size_t req_size = MIN(sizeof(buf), newpos - curpos); ssize_t got_size = BZ2_bzread(bzf->file, buf, req_size); - if (got_size != (ssize_t)(req_size)) { - if (got_size < 0) - return -1; - else { - newpos = oldpos + got_size; - break; - } - } - oldpos += got_size; + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; } - return newpos; } +out: + bzf->position = curpos; + return curpos; } static int bzclose(void *cookie) @@ -223,6 +248,7 @@ typedef struct lzfile_s { uint8_t buf[1<<12]; lzma_stream strm; FILE *file; + FILE *stdio; int encoding; int level; int what; @@ -291,9 +317,9 @@ static ssize_t lzmawrite(void *cookie, const char *buf, size_t count) lzfile_t *lzma = (lzfile_t*)cookie; lzma_stream *strm; if (!lzma || !lzma->encoding) - return -1; + return -1; if (!count) - return 0; + return 0; strm = &lzma->strm; strm->next_in = (uint8_t*)buf; @@ -318,24 +344,31 @@ static ssize_t lzmawrite(void *cookie, const char *buf, size_t count) static zio_int_t lzmaseek(void *cookie, zio_off_t *poffset, int whence) { lzfile_t *lzma = (lzfile_t*)cookie; - off_t offset = (off_t)*poffset; lzma_stream *strm; - off_t oldpos, newpos; - if (!lzma) + off_t offset, curpos, newpos; + if (!lzma) { + errno = EINVAL; return -1; + } + strm = &lzma->strm; + offset = (off_t)*poffset; + curpos = (off_t)strm->total_out; - oldpos = (off_t)strm->total_out; switch (whence) { case SEEK_SET: - if (offset < 0) + if (offset < 0) { + errno = EINVAL; return -1; + } newpos = offset; break; case SEEK_CUR: - if ((offset < 0 && (off_t)(-1 * offset) > oldpos) || (offset > 0 && (offset+oldpos) < oldpos)) + if ((offset < 0 && (off_t)(-1 * offset) > curpos) || (offset > 0 && (offset+curpos) < curpos)) { + errno = EINVAL; return -1; - newpos = (off_t)strm->total_out + offset; + } + newpos = curpos + offset; break; case SEEK_END: newpos = -1; @@ -344,37 +377,51 @@ static zio_int_t lzmaseek(void *cookie, zio_off_t *poffset, int whence) errno = EINVAL; return -1; } - - if (whence != SEEK_END && newpos < oldpos) { + if (whence != SEEK_END && newpos < curpos) { lzma_ret ret; + lzma_end(strm); + lzma->strm = (lzma_stream)LZMA_STREAM_INIT; + strm = &lzma->strm; + rewind(lzma->file); + clearerr(lzma->file); + lzma->eof = 0; + ret = lzmaopen(strm, lzma->encoding ? 'w' : 'r', lzma->what, lzma->level); if (ret != LZMA_OK || strm->total_out != 0) { fclose(lzma->file); errno = EINVAL; return -1; } + curpos = (off_t)0; } - if (newpos == oldpos) - return oldpos; - else { + if (newpos == curpos) + goto out; + if (newpos == -1) { char buf[sizeof(lzma->buf)]; - while (newpos > oldpos || newpos == -1) { - size_t req_size = MIN(sizeof(buf), newpos - oldpos); + while (1) { + ssize_t got_size = lzmaread(cookie, buf, sizeof(buf)); + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; + } + } else { + char buf[sizeof(lzma->buf)]; + while (newpos > curpos) { + size_t req_size = MIN(sizeof(buf), newpos - curpos); ssize_t got_size = lzmaread(cookie, buf, req_size); - if (got_size != (ssize_t)(req_size)) { - if (got_size < 0) - return -1; - else { - newpos = oldpos + got_size; - break; - } - } - oldpos += got_size; + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; } - return newpos; } +out: + return curpos; } static int lzmaclose(void *cookie) @@ -466,8 +513,9 @@ static cookie_io_functions_t iolzma = { #endif /* !HAS_LZMA_H */ typedef struct lzwfile_s { - size_t total_out; + size_t position; LZW_t *file; + FILE *stdio; char *mode; char *path; int fd; @@ -482,7 +530,7 @@ static ssize_t lzwread(void *cookie, char *buf, size_t count) if (lzw->file) len = readlzw(lzw->file, buf, count); if (len > 0) - lzw->total_out += len; + lzw->position += len; out: if (len < 0) errno = EINVAL; @@ -498,24 +546,29 @@ static ssize_t lzwwrite(void *cookie, const char *buf, size_t count) static zio_int_t lzwseek(void *cookie, zio_off_t *poffset, int whence) { lzwfile_t *lzw = (lzwfile_t*)cookie; - off_t offset = (off_t)*poffset; - off_t oldpos, newpos; + off_t offset, curpos, newpos; if (!lzw) { errno = EINVAL; return -1; } - oldpos = (off_t)lzw->total_out; + offset = (off_t)*poffset; + curpos = (off_t)lzw->position; + switch (whence) { case SEEK_SET: - if (offset < 0) + if (offset < 0) { + errno = EINVAL; return -1; + } newpos = offset; break; case SEEK_CUR: - if ((offset < 0 && (off_t)(-1 * offset) > oldpos) || (offset > 0 && (offset+oldpos) < oldpos)) + if ((offset < 0 && (off_t)(-1 * offset) > curpos) || (offset > 0 && (offset+curpos) < curpos)) { + errno = EINVAL; return -1; - newpos = (off_t)lzw->total_out + offset; + } + newpos = curpos + offset; break; case SEEK_END: newpos = -1; @@ -525,7 +578,7 @@ static zio_int_t lzwseek(void *cookie, zio_off_t *poffset, int whence) return -1; } - if (whence != SEEK_END && newpos < oldpos) { + if (whence != SEEK_END && newpos < curpos) { closelzw(lzw->file); if (lzw->fd >= 0) { lseek(lzw->fd, 0, SEEK_SET); @@ -540,27 +593,36 @@ static zio_int_t lzwseek(void *cookie, zio_off_t *poffset, int whence) errno = EINVAL; return -1; } - lzw->total_out = 0; + curpos = (off_t)0; + lzw->position = curpos; } - if (newpos == oldpos) - return oldpos; - else { + if (newpos == curpos) + goto out; + if (newpos == -1) { char buf[1<<12]; - while (newpos > oldpos || newpos == -1) { - size_t req_size = MIN(sizeof(buf), newpos - oldpos); + while (1) { + ssize_t got_size = readlzw(lzw->file, buf, sizeof(buf)); + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; + } + } else { + char buf[1<<12]; + while (newpos > curpos) { + size_t req_size = MIN(sizeof(buf), newpos - curpos); ssize_t got_size = readlzw(lzw->file, buf, req_size); - if (got_size != (ssize_t)(req_size)) { - if (got_size < 0) - return -1; - else { - newpos = oldpos + got_size; - break; - } - } - oldpos += got_size; + if (got_size < 0) + return -1; + if (got_size == 0) + break; + curpos += got_size; } - return newpos; } +out: + lzw->position = curpos; + return curpos; } static int lzwclose(void *cookie) @@ -787,6 +849,7 @@ FILE * fzopen(const char * path, const char * mode) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } break; case 'b': @@ -834,6 +897,7 @@ FILE * fzopen(const char * path, const char * mode) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } #else /* !HAS_BZLIB_H */ errno = ENOTSUP; @@ -892,6 +956,7 @@ FILE * fzopen(const char * path, const char * mode) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } break; #else /* !HAS_LZMA_H */ @@ -928,6 +993,7 @@ FILE * fzopen(const char * path, const char * mode) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } # else /* !HAS_LZMADEC_H */ errno = ENOTSUP; @@ -1048,6 +1114,7 @@ FILE * fdzopen(int fildes, const char * mode, const char *what) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } break; case 'b': @@ -1097,6 +1164,7 @@ FILE * fdzopen(int fildes, const char * mode, const char *what) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } #else /* !HAS_BZLIB_H */ errno = ENOTSUP; @@ -1137,6 +1205,7 @@ FILE * fdzopen(int fildes, const char * mode, const char *what) cookie->level = level; cookie->encoding = (check[0] == 'w') ? 1 : 0; lret = lzmaopen(&cookie->strm, check[0], *what, level); + if (lret != LZMA_OK) { fclose(cookie->file); free(cookie); @@ -1154,6 +1223,7 @@ FILE * fdzopen(int fildes, const char * mode, const char *what) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } break; #else /* !HAS_LZMA_H */ @@ -1190,6 +1260,7 @@ FILE * fdzopen(int fildes, const char * mode, const char *what) if (ret->_fileno < 0) ret->_fileno = 0; # endif + cookie->stdio = ret; } # else /* !HAS_LZMADEC_H */ errno = ENOTSUP; @@ -1,12 +1,21 @@ /* - * zio.h Provide an streamable interface to gziped/bzip2ed files + * zio.h Provide an streamable interface to gziped/bzip2ed/LZW/LZMA files * * Copyright 2004 Werner Fink, 2004 SuSE LINUX AG, Germany. + * Copyright 2013 Werner Fink, 2013 SuSE LINUX AG, Germany. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation; version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Author: Werner Fink <werner@suse.de> */ @@ -1,15 +1,24 @@ /* - * zioP.h Internal header for libzio, including required - * standard glibc header, zlib.h, and bzlib.h. - * Making the used libz and bzlib functions weak symbols. + * zioP.h Internal header for libzio, including required standard glibc + * header, zlib.h, lzma.h or lzmadec.h, and bzlib.h. + * Making the used libz, liblzma, and bzlib functions weak symbols. * * Copyright 2004 Werner Fink, 2004 SuSE LINUX AG, Germany. * Copyright 2006 Werner Fink, 2006 SuSE Products GmbH, Germany. + * Copyright 2013 Werner Fink, 2013 SuSE Products GmbH, Germany. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation; version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Author: Werner Fink <werner@suse.de> */ |