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author | aliaspider | 2014-10-28 06:47:04 +0100 |
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committer | aliaspider | 2014-10-28 06:47:04 +0100 |
commit | ad4866e0cb1f7ddefbe1e31a890741e4cbc50181 (patch) | |
tree | 86b8351ca560156abbeaed5e2c1964de38a49544 /source/unzip/unzip.c | |
parent | 2b75359c7ea0485b509460ea81606ac8052a6333 (diff) | |
download | snesemu-ad4866e0cb1f7ddefbe1e31a890741e4cbc50181.tar.gz snesemu-ad4866e0cb1f7ddefbe1e31a890741e4cbc50181.tar.bz2 snesemu-ad4866e0cb1f7ddefbe1e31a890741e4cbc50181.zip |
remove unused files
Diffstat (limited to 'source/unzip/unzip.c')
-rw-r--r-- | source/unzip/unzip.c | 1224 |
1 files changed, 0 insertions, 1224 deletions
diff --git a/source/unzip/unzip.c b/source/unzip/unzip.c deleted file mode 100644 index 54695c2..0000000 --- a/source/unzip/unzip.c +++ /dev/null @@ -1,1224 +0,0 @@ -/* - * unzip.c -- IO on .zip files using zlib Version 0.15 beta, Mar 19th, 1998, - * - * Read unzip.h for more info - */ - - -//#include <stdio.h> -//#include <stdlib.h> -#include "fs_api.h" -#include "ds2_malloc.h" -#include <string.h> -#include "zlib.h" -#include "unzip.h" -#include "unzipP.h" - -#ifdef STDC -//#include <stddef.h> -//#include <string.h> -//#include <stdlib.h> -#endif - -#ifdef NO_ERRNO_H -extern int errno; -#else -#include <errno.h> -#endif - -const char unz_copyright[] = -" unzip 0.15 Copyright 1998 Gilles Vollant "; - -void unShrink (); -void unReduce (); -int explode (); - -/* - * =========================================================================== - * Read a byte from a gz_stream; update next_in and avail_in. Return EOF for - * end of file. IN assertion: the stream s has been sucessfully opened for - * reading. - */ - - -local int -unzlocal_getByte (FILE * fin, int *pi) -{ - unsigned char c; - int err = fread (&c, 1, 1, fin); - if (err == 1) - { - *pi = (int) c; - return UNZ_OK; - } else - { - if (ferror (fin)) - return UNZ_ERRNO; - else - return UNZ_EOF; - } -} - - -/* - * =========================================================================== - * Reads a long in LSB order from the given gz_stream. Sets - */ -local int -unzlocal_getShort (FILE * fin, uLong * pX) -{ - uLong x; - int i; - int err; - - err = unzlocal_getByte (fin, &i); - x = (uLong) i; - - if (err == UNZ_OK) - err = unzlocal_getByte (fin, &i); - x += ((uLong) i) << 8; - - if (err == UNZ_OK) - *pX = x; - else - *pX = 0; - return err; -} - -local int -unzlocal_getLong (FILE * fin, uLong * pX) -{ - uLong x; - int i; - int err; - - err = unzlocal_getByte (fin, &i); - x = (uLong) i; - - if (err == UNZ_OK) - err = unzlocal_getByte (fin, &i); - x += ((uLong) i) << 8; - - if (err == UNZ_OK) - err = unzlocal_getByte (fin, &i); - x += ((uLong) i) << 16; - - if (err == UNZ_OK) - err = unzlocal_getByte (fin, &i); - x += ((uLong) i) << 24; - - if (err == UNZ_OK) - *pX = x; - else - *pX = 0; - return err; -} - - -/* My own strcmpi / strcasecmp */ -local int -strcmpcasenosensitive_internal (const char *fileName1, const char *fileName2) -{ - for (;;) - { - char c1 = *(fileName1++); - char c2 = *(fileName2++); - if ((c1 >= 'a') && (c1 <= 'z')) - c1 -= 0x20; - if ((c2 >= 'a') && (c2 <= 'z')) - c2 -= 0x20; - if (c1 == '\0') - return ((c2 == '\0') ? 0 : -1); - if (c2 == '\0') - return 1; - if (c1 < c2) - return -1; - if (c1 > c2) - return 1; - } -} - - -#ifdef CASESENSITIVITYDEFAULT_NO -#define CASESENSITIVITYDEFAULTVALUE 2 -#else -#define CASESENSITIVITYDEFAULTVALUE 1 -#endif - -#ifndef STRCMPCASENOSENTIVEFUNCTION -#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal -#endif - -/* - * Compare two filename (fileName1,fileName2). If iCaseSenisivity = 1, - * comparision is case sensitivity (like strcmp) If iCaseSenisivity = 2, - * comparision is not case sensitivity (like strcmpi or strcasecmp) If - * iCaseSenisivity = 0, case sensitivity is defaut of your operating system - * (like 1 on Unix, 2 on Windows) - * - */ -extern int ZEXPORT -unzStringFileNameCompare (const char *fileName1, const char *fileName2, int iCaseSensitivity) -{ - if (iCaseSensitivity == 0) - iCaseSensitivity = CASESENSITIVITYDEFAULTVALUE; - - if (iCaseSensitivity == 1) - return strcmp (fileName1, fileName2); - - return STRCMPCASENOSENTIVEFUNCTION (fileName1, fileName2); -} - -#define BUFREADCOMMENT (0x400) - -/* - * Locate the Central directory of a zipfile (at the end, just before the - * global comment) - */ -local uLong -unzlocal_SearchCentralDir (FILE * fin) -{ - unsigned char *buf; - uLong uSizeFile; - uLong uBackRead; - uLong uMaxBack = 0xffff; /* maximum size of global comment */ - uLong uPosFound = 0; - - if (fseek (fin, 0, SEEK_END) != 0) - return 0; - - uSizeFile = ftell (fin); - - if (uMaxBack > uSizeFile) - uMaxBack = uSizeFile; - - buf = (unsigned char *) ALLOC (BUFREADCOMMENT + 4); - if (buf == NULL) - return 0; - - uBackRead = 4; - while (uBackRead < uMaxBack) - { - uLong uReadSize, uReadPos; - int i; - if (uBackRead + BUFREADCOMMENT > uMaxBack) - uBackRead = uMaxBack; - else - uBackRead += BUFREADCOMMENT; - uReadPos = uSizeFile - uBackRead; - - uReadSize = ((BUFREADCOMMENT + 4) < (uSizeFile - uReadPos)) ? - (BUFREADCOMMENT + 4) : (uSizeFile - uReadPos); - if (fseek (fin, uReadPos, SEEK_SET) != 0) - break; - - if (fread (buf, (uInt) uReadSize, 1, fin) != 1) - break; - - for (i = 0; i < (int) uReadSize - 3; i++) - if (((*(buf + i)) == 0x50) && ((*(buf + i + 1)) == 0x4b) && - ((*(buf + i + 2)) == 0x05) && ((*(buf + i + 3)) == 0x06)) - { - uPosFound = uReadPos + i; - break; - } - if (uPosFound != 0) - break; - } - TRYFREE (buf); - return uPosFound; -} - -/* - * Open a Zip file. path contain the full pathname (by example, on a Windows - * NT computer "c:\\test\\zlib109.zip" or on an Unix computer - * "zlib/zlib109.zip". If the zipfile cannot be opened (file don't exist or - * in not valid), the return value is NULL. Else, the return value is a - * unzFile Handle, usable with other function of this unzip package. - */ -extern unzFile ZEXPORT -unzOpen (const char *path) -{ - unz_s us; - unz_s *s; - uLong central_pos, uL; - FILE *fin; - - uLong number_disk;/* number of the current dist, used for - * spaning ZIP, unsupported, always 0 */ - uLong number_disk_with_CD; /* number the the disk with - * central dir, used for - * spaning ZIP, unsupported, - * always 0 */ - uLong number_entry_CD; /* total number of entries in the - * central dir (same than - * number_entry on nospan) */ - - int err = UNZ_OK; - - if (unz_copyright[0] != ' ') - return NULL; - - fin = fopen (path, "rb"); - if (fin == NULL) - return NULL; - - central_pos = unzlocal_SearchCentralDir (fin); - if (central_pos == 0) - err = UNZ_ERRNO; - - if (fseek (fin, central_pos, SEEK_SET) != 0) - err = UNZ_ERRNO; - - /* the signature, already checked */ - if (unzlocal_getLong (fin, &uL) != UNZ_OK) - err = UNZ_ERRNO; - - /* number of this disk */ - if (unzlocal_getShort (fin, &number_disk) != UNZ_OK) - err = UNZ_ERRNO; - - /* number of the disk with the start of the central directory */ - if (unzlocal_getShort (fin, &number_disk_with_CD) != UNZ_OK) - err = UNZ_ERRNO; - - /* total number of entries in the central dir on this disk */ - if (unzlocal_getShort (fin, &us.gi.number_entry) != UNZ_OK) - err = UNZ_ERRNO; - - /* total number of entries in the central dir */ - if (unzlocal_getShort (fin, &number_entry_CD) != UNZ_OK) - err = UNZ_ERRNO; - - if ((number_entry_CD != us.gi.number_entry) || - (number_disk_with_CD != 0) || - (number_disk != 0)) - err = UNZ_BADZIPFILE; - - /* size of the central directory */ - if (unzlocal_getLong (fin, &us.size_central_dir) != UNZ_OK) - err = UNZ_ERRNO; - - /* - * offset of start of central directory with respect to the starting disk - * number - */ - if (unzlocal_getLong (fin, &us.offset_central_dir) != UNZ_OK) - err = UNZ_ERRNO; - - /* zipfile comment length */ - if (unzlocal_getShort (fin, &us.gi.size_comment) != UNZ_OK) - err = UNZ_ERRNO; - - if ((central_pos < us.offset_central_dir + us.size_central_dir) && - (err == UNZ_OK)) - err = UNZ_BADZIPFILE; - - if (err != UNZ_OK) - { - fclose (fin); - return NULL; - } - us.file = fin; - us.byte_before_the_zipfile = central_pos - - (us.offset_central_dir + us.size_central_dir); - us.central_pos = central_pos; - us.pfile_in_zip_read = NULL; - - - s = (unz_s *) ALLOC (sizeof (unz_s)); - *s = us; - unzGoToFirstFile ((unzFile) s); - return (unzFile) s; -} - - -/* - * Close a ZipFile opened with unzipOpen. If there is files inside the .Zip - * opened with unzipOpenCurrentFile (see later), these files MUST be closed - * with unzipCloseCurrentFile before call unzipClose. return UNZ_OK if there - * is no problem. - */ -extern int ZEXPORT -unzClose (unzFile file) -{ - unz_s *s; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - - if (s->pfile_in_zip_read != NULL) - unzCloseCurrentFile (file); - - fclose (s->file); - TRYFREE (s); - return UNZ_OK; -} - - -/* - * Write info about the ZipFile in the *pglobal_info structure. No - * preparation of the structure is needed return UNZ_OK if there is no - * problem. - */ -extern int ZEXPORT -unzGetGlobalInfo (unzFile file, unz_global_info * pglobal_info) -{ - unz_s *s; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - *pglobal_info = s->gi; - return UNZ_OK; -} - - -/* - * Translate date/time from Dos format to tm_unz (readable more easilty) - */ -local void -unzlocal_DosDateToTmuDate (uLong ulDosDate, tm_unz * ptm) -{ - uLong uDate; - uDate = (uLong) (ulDosDate >> 16); - ptm->tm_mday = (uInt) (uDate & 0x1f); - ptm->tm_mon = (uInt) ((((uDate) & 0x1E0) / 0x20) - 1); - ptm->tm_year = (uInt) (((uDate & 0x0FE00) / 0x0200) + 1980); - - ptm->tm_hour = (uInt) ((ulDosDate & 0xF800) / 0x800); - ptm->tm_min = (uInt) ((ulDosDate & 0x7E0) / 0x20); - ptm->tm_sec = (uInt) (2 * (ulDosDate & 0x1f)); -} - -/* - * Get Info about the current file in the zipfile, with internal only info - */ -local int unzlocal_GetCurrentFileInfoInternal -OF ((unzFile file, - unz_file_info * pfile_info, - unz_file_info_internal - * pfile_info_internal, - char *szFileName, - uLong fileNameBufferSize, - void *extraField, - uLong extraFieldBufferSize, - char *szComment, - uLong commentBufferSize)); - - local int unzlocal_GetCurrentFileInfoInternal ( - unzFile file, - unz_file_info * pfile_info, - unz_file_info_internal * pfile_info_internal, - char *szFileName, - uLong fileNameBufferSize, - void *extraField, - uLong extraFieldBufferSize, - char *szComment, - uLong commentBufferSize) -{ - unz_s *s; - unz_file_info file_info; - unz_file_info_internal file_info_internal; - int err = UNZ_OK; - uLong uMagic; - long lSeek = 0; - - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - if (fseek (s->file, s->pos_in_central_dir + s->byte_before_the_zipfile, SEEK_SET) != 0) - err = UNZ_ERRNO; - - - /* we check the magic */ - if (err == UNZ_OK) - { - if (unzlocal_getLong (s->file, &uMagic) != UNZ_OK) - err = UNZ_ERRNO; - else if (uMagic != 0x02014b50) - err = UNZ_BADZIPFILE; - } - if (unzlocal_getShort (s->file, &file_info.version) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.version_needed) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.flag) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.compression_method) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &file_info.dosDate) != UNZ_OK) - err = UNZ_ERRNO; - - unzlocal_DosDateToTmuDate (file_info.dosDate, &file_info.tmu_date); - - if (unzlocal_getLong (s->file, &file_info.crc) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &file_info.compressed_size) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &file_info.uncompressed_size) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.size_filename) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.size_file_extra) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.size_file_comment) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.disk_num_start) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &file_info.internal_fa) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &file_info.external_fa) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &file_info_internal.offset_curfile) != UNZ_OK) - err = UNZ_ERRNO; - - lSeek += file_info.size_filename; - if ((err == UNZ_OK) && (szFileName != NULL)) - { - uLong uSizeRead; - if (file_info.size_filename < fileNameBufferSize) - { - *(szFileName + file_info.size_filename) = '\0'; - uSizeRead = file_info.size_filename; - } else - uSizeRead = fileNameBufferSize; - - if ((file_info.size_filename > 0) && (fileNameBufferSize > 0)) - if (fread (szFileName, (uInt) uSizeRead, 1, s->file) != 1) - err = UNZ_ERRNO; - lSeek -= uSizeRead; - } - if ((err == UNZ_OK) && (extraField != NULL)) - { - uLong uSizeRead; - if (file_info.size_file_extra < extraFieldBufferSize) - uSizeRead = file_info.size_file_extra; - else - uSizeRead = extraFieldBufferSize; - - if (lSeek != 0) - { - if (fseek (s->file, lSeek, SEEK_CUR) == 0) - lSeek = 0; - else - err = UNZ_ERRNO; - } - if ((file_info.size_file_extra > 0) && (extraFieldBufferSize > 0)) - if (fread (extraField, (uInt) uSizeRead, 1, s->file) != 1) - err = UNZ_ERRNO; - lSeek += file_info.size_file_extra - uSizeRead; - } else - lSeek += file_info.size_file_extra; - - - if ((err == UNZ_OK) && (szComment != NULL)) - { - uLong uSizeRead; - if (file_info.size_file_comment < commentBufferSize) - { - *(szComment + file_info.size_file_comment) = '\0'; - uSizeRead = file_info.size_file_comment; - } else - uSizeRead = commentBufferSize; - - if (lSeek != 0) - { - if (fseek (s->file, lSeek, SEEK_CUR) == 0) - lSeek = 0; - else - err = UNZ_ERRNO; - } - if ((file_info.size_file_comment > 0) && (commentBufferSize > 0)) - if (fread (szComment, (uInt) uSizeRead, 1, s->file) != 1) - err = UNZ_ERRNO; - lSeek += file_info.size_file_comment - uSizeRead; - } else - lSeek += file_info.size_file_comment; - - if ((err == UNZ_OK) && (pfile_info != NULL)) - *pfile_info = file_info; - - if ((err == UNZ_OK) && (pfile_info_internal != NULL)) - *pfile_info_internal = file_info_internal; - - return err; -} - - - -/* - * Write info about the ZipFile in the *pglobal_info structure. No - * preparation of the structure is needed return UNZ_OK if there is no - * problem. - */ -extern int ZEXPORT -unzGetCurrentFileInfo ( - unzFile file, - unz_file_info * pfile_info, - char *szFileName, - uLong fileNameBufferSize, - void *extraField, - uLong extraFieldBufferSize, - char *szComment, - uLong commentBufferSize) -{ - return unzlocal_GetCurrentFileInfoInternal (file, pfile_info, NULL, - szFileName, fileNameBufferSize, - extraField, extraFieldBufferSize, - szComment, commentBufferSize); -} - -/* - * Set the current file of the zipfile to the first file. return UNZ_OK if - * there is no problem - */ -extern int ZEXPORT -unzGoToFirstFile (unzFile file) -{ - int err = UNZ_OK; - unz_s *s; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - s->pos_in_central_dir = s->offset_central_dir; - s->num_file = 0; - err = unzlocal_GetCurrentFileInfoInternal (file, &s->cur_file_info, - &s->cur_file_info_internal, - NULL, 0, NULL, 0, NULL, 0); - s->current_file_ok = (err == UNZ_OK); - return err; -} - - -/* - * Set the current file of the zipfile to the next file. return UNZ_OK if - * there is no problem return UNZ_END_OF_LIST_OF_FILE if the actual file was - * the latest. - */ -extern int ZEXPORT -unzGoToNextFile (unzFile file) -{ - unz_s *s; - int err; - - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - if (!s->current_file_ok) - return UNZ_END_OF_LIST_OF_FILE; - if (s->num_file + 1 == s->gi.number_entry) - return UNZ_END_OF_LIST_OF_FILE; - - s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename + - s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment; - s->num_file++; - err = unzlocal_GetCurrentFileInfoInternal (file, &s->cur_file_info, - &s->cur_file_info_internal, - NULL, 0, NULL, 0, NULL, 0); - s->current_file_ok = (err == UNZ_OK); - return err; -} - - -/* - * Try locate the file szFileName in the zipfile. For the iCaseSensitivity - * signification, see unzipStringFileNameCompare - * - * return value : UNZ_OK if the file is found. It becomes the current file. - * UNZ_END_OF_LIST_OF_FILE if the file is not found - */ -extern int ZEXPORT -unzLocateFile ( - unzFile file, - const char *szFileName, - int iCaseSensitivity) -{ - unz_s *s; - int err; - - - uLong num_fileSaved; - uLong pos_in_central_dirSaved; - - - if (file == NULL) - return UNZ_PARAMERROR; - - if (strlen (szFileName) >= UNZ_MAXFILENAMEINZIP) - return UNZ_PARAMERROR; - - s = (unz_s *) file; - if (!s->current_file_ok) - return UNZ_END_OF_LIST_OF_FILE; - - num_fileSaved = s->num_file; - pos_in_central_dirSaved = s->pos_in_central_dir; - - err = unzGoToFirstFile (file); - - while (err == UNZ_OK) - { - char szCurrentFileName[UNZ_MAXFILENAMEINZIP + 1]; - unzGetCurrentFileInfo (file, NULL, - szCurrentFileName, sizeof (szCurrentFileName) - 1, - NULL, 0, NULL, 0); - if (unzStringFileNameCompare (szCurrentFileName, - szFileName, iCaseSensitivity) == 0) - return UNZ_OK; - err = unzGoToNextFile (file); - } - - s->num_file = num_fileSaved; - s->pos_in_central_dir = pos_in_central_dirSaved; - return err; -} - - -/* - * Read the local header of the current zipfile Check the coherency of the - * local header and info in the end of central directory about this file - * store in *piSizeVar the size of extra info in local header (filename and - * size of extra field data) - */ -local int -unzlocal_CheckCurrentFileCoherencyHeader ( - unz_s * s, - uInt * piSizeVar, - uLong * poffset_local_extrafield, - uInt * psize_local_extrafield) -{ - uLong uMagic, uData, uFlags; - uLong size_filename; - uLong size_extra_field; - int err = UNZ_OK; - - *piSizeVar = 0; - *poffset_local_extrafield = 0; - *psize_local_extrafield = 0; - - if (fseek (s->file, s->cur_file_info_internal.offset_curfile + - s->byte_before_the_zipfile, SEEK_SET) != 0) - return UNZ_ERRNO; - - - if (err == UNZ_OK) - { - if (unzlocal_getLong (s->file, &uMagic) != UNZ_OK) - err = UNZ_ERRNO; - else if (uMagic != 0x04034b50) - err = UNZ_BADZIPFILE; - } - - if (unzlocal_getShort (s->file, &uData) != UNZ_OK) - err = UNZ_ERRNO; - /* - * else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) - * err=UNZ_BADZIPFILE; - */ - if (unzlocal_getShort (s->file, &uFlags) != UNZ_OK) - err = UNZ_ERRNO; - - if (unzlocal_getShort (s->file, &uData) != UNZ_OK) - err = UNZ_ERRNO; - else if ((err == UNZ_OK) && (uData != s->cur_file_info.compression_method)) - err = UNZ_BADZIPFILE; - - if ((err == UNZ_OK) && - s->cur_file_info.compression_method > Z_DEFLATED) - err = UNZ_BADZIPFILE; - - if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* date/time */ - err = UNZ_ERRNO; - - if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* crc */ - err = UNZ_ERRNO; - else if ((err == UNZ_OK) && (uData != s->cur_file_info.crc) && - ((uFlags & 8) == 0)) - err = UNZ_BADZIPFILE; - - if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* size compr */ - err = UNZ_ERRNO; - else if ((err == UNZ_OK) && (uData != s->cur_file_info.compressed_size) && - ((uFlags & 8) == 0)) - err = UNZ_BADZIPFILE; - - if (unzlocal_getLong (s->file, &uData) != UNZ_OK) /* size uncompr */ - err = UNZ_ERRNO; - else if ((err == UNZ_OK) && (uData != s->cur_file_info.uncompressed_size) && - ((uFlags & 8) == 0)) - err = UNZ_BADZIPFILE; - - - if (unzlocal_getShort (s->file, &size_filename) != UNZ_OK) - err = UNZ_ERRNO; - else if ((err == UNZ_OK) && (size_filename != s->cur_file_info.size_filename)) - err = UNZ_BADZIPFILE; - - *piSizeVar += (uInt) size_filename; - - if (unzlocal_getShort (s->file, &size_extra_field) != UNZ_OK) - err = UNZ_ERRNO; - *poffset_local_extrafield = s->cur_file_info_internal.offset_curfile + - SIZEZIPLOCALHEADER + size_filename; - *psize_local_extrafield = (uInt) size_extra_field; - - *piSizeVar += (uInt) size_extra_field; - - return err; -} - -/* - * Open for reading data the current file in the zipfile. If there is no - * error and the file is opened, the return value is UNZ_OK. - */ -extern int ZEXPORT -unzOpenCurrentFile (unzFile file) -{ - int err = UNZ_OK; - uInt iSizeVar; - unz_s *s; - file_in_zip_read_info_s *pfile_in_zip_read_info; - uLong offset_local_extrafield; /* offset of the local extra - * field */ - uInt size_local_extrafield; /* size of the local extra - * field */ - - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - if (!s->current_file_ok) - return UNZ_PARAMERROR; - - if (s->pfile_in_zip_read != NULL) - unzCloseCurrentFile (file); - - if (unzlocal_CheckCurrentFileCoherencyHeader (s, &iSizeVar, - &offset_local_extrafield, &size_local_extrafield) != UNZ_OK) - return UNZ_BADZIPFILE; - - pfile_in_zip_read_info = (file_in_zip_read_info_s *) - ALLOC (sizeof (file_in_zip_read_info_s)); - if (pfile_in_zip_read_info == NULL) - return UNZ_INTERNALERROR; - - pfile_in_zip_read_info->read_buffer = (char *) ALLOC (UNZ_BUFSIZE); - pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield; - pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield; - pfile_in_zip_read_info->pos_local_extrafield = 0; - - if (pfile_in_zip_read_info->read_buffer == NULL) - { - TRYFREE (pfile_in_zip_read_info); - return UNZ_INTERNALERROR; - } - pfile_in_zip_read_info->stream_initialised = 0; - - if (s->cur_file_info.compression_method > Z_DEFLATED) - err = UNZ_BADZIPFILE; - - pfile_in_zip_read_info->crc32_wait = s->cur_file_info.crc; - pfile_in_zip_read_info->crc32 = 0; - pfile_in_zip_read_info->compression_method = - s->cur_file_info.compression_method; - pfile_in_zip_read_info->file = s->file; - pfile_in_zip_read_info->byte_before_the_zipfile = s->byte_before_the_zipfile; - - pfile_in_zip_read_info->stream.total_out = 0; - - switch (s->cur_file_info.compression_method) - { - case UNZ_STORED: - break; - case UNZ_SHRUNK: - break; - case UNZ_REDUCED1: - case UNZ_REDUCED2: - case UNZ_REDUCED3: - case UNZ_REDUCED4: - break; - case UNZ_IMPLODED: - break; - case UNZ_DEFLATED: - pfile_in_zip_read_info->stream.zalloc = (alloc_func) 0; - pfile_in_zip_read_info->stream.zfree = (free_func) 0; - pfile_in_zip_read_info->stream.opaque = (voidpf) 0; - - err = inflateInit2 (&pfile_in_zip_read_info->stream, -MAX_WBITS); - if (err == Z_OK) - pfile_in_zip_read_info->stream_initialised = 1; - /* - * windowBits is passed < 0 to tell that there is no zlib header. - * Note that in this case inflate *requires* an extra "dummy" byte - * after the compressed stream in order to complete decompression and - * return Z_STREAM_END. In unzip, i don't wait absolutely - * Z_STREAM_END because I known the size of both compressed and - * uncompressed data - */ - break; - default: - return UNZ_INTERNALERROR; - break; - } - pfile_in_zip_read_info->rest_read_compressed = - s->cur_file_info.compressed_size; - pfile_in_zip_read_info->rest_read_uncompressed = - s->cur_file_info.uncompressed_size; - - pfile_in_zip_read_info->pos_in_zipfile = - s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + - iSizeVar; - - pfile_in_zip_read_info->stream.avail_in = (uInt) 0; - s->pfile_in_zip_read = pfile_in_zip_read_info; - return UNZ_OK; -} - - -/* - * Read bytes from the current file. buf contain buffer where data must be - * copied len the size of buf. - * - * return the number of byte copied if somes bytes are copied return 0 if the - * end of file was reached return <0 with error code if there is an error - * (UNZ_ERRNO for IO error, or zLib error for uncompress error) - */ - -file_in_zip_read_info_s *pfile_in_zip_read_info = NULL; -unz_s *pUnzip = NULL; -extern int ZEXPORT -unzReadCurrentFile ( - unzFile file, - voidp buf, - unsigned len) -{ - int err = UNZ_OK; - uInt iRead = 0; - unz_s *s; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - pUnzip = s; - pfile_in_zip_read_info = s->pfile_in_zip_read; - - if (pfile_in_zip_read_info == NULL) - return UNZ_PARAMERROR; - - - if ((pfile_in_zip_read_info->read_buffer == NULL)) - return UNZ_END_OF_LIST_OF_FILE; - if (len == 0) - return 0; - - pfile_in_zip_read_info->stream.next_out = (Bytef *) buf; - - pfile_in_zip_read_info->stream.avail_out = (uInt) len; - - if (len > pfile_in_zip_read_info->rest_read_uncompressed) - pfile_in_zip_read_info->stream.avail_out = - (uInt) pfile_in_zip_read_info->rest_read_uncompressed; - - while (pfile_in_zip_read_info->stream.avail_out > 0 && err == UNZ_OK) - { - switch (pfile_in_zip_read_info->compression_method) - { - case UNZ_STORED: - case UNZ_DEFLATED: - if ((pfile_in_zip_read_info->stream.avail_in == 0) && - (pfile_in_zip_read_info->rest_read_compressed > 0)) - { - uInt uReadThis = UNZ_BUFSIZE; - if (pfile_in_zip_read_info->rest_read_compressed < uReadThis) - uReadThis = (uInt) pfile_in_zip_read_info->rest_read_compressed; - if (uReadThis == 0) - return UNZ_EOF; - if (fseek (pfile_in_zip_read_info->file, - pfile_in_zip_read_info->pos_in_zipfile + - pfile_in_zip_read_info->byte_before_the_zipfile, SEEK_SET) != 0) - return UNZ_ERRNO; - if (fread (pfile_in_zip_read_info->read_buffer, uReadThis, 1, - pfile_in_zip_read_info->file) != 1) - return UNZ_ERRNO; - pfile_in_zip_read_info->pos_in_zipfile += uReadThis; - - pfile_in_zip_read_info->rest_read_compressed -= uReadThis; - - pfile_in_zip_read_info->stream.next_in = - (Bytef *) pfile_in_zip_read_info->read_buffer; - pfile_in_zip_read_info->stream.avail_in = (uInt) uReadThis; - } - break; - } - switch (pfile_in_zip_read_info->compression_method) - { - case UNZ_STORED: - { - uInt uDoCopy, i; - if (pfile_in_zip_read_info->stream.avail_out < - pfile_in_zip_read_info->stream.avail_in) - uDoCopy = pfile_in_zip_read_info->stream.avail_out; - else - uDoCopy = pfile_in_zip_read_info->stream.avail_in; - - for (i = 0; i < uDoCopy; i++) - *(pfile_in_zip_read_info->stream.next_out + i) = - *(pfile_in_zip_read_info->stream.next_in + i); - - pfile_in_zip_read_info->crc32 = crc32 (pfile_in_zip_read_info->crc32, - pfile_in_zip_read_info->stream.next_out, - uDoCopy); - pfile_in_zip_read_info->rest_read_uncompressed -= uDoCopy; - pfile_in_zip_read_info->stream.avail_in -= uDoCopy; - pfile_in_zip_read_info->stream.avail_out -= uDoCopy; - pfile_in_zip_read_info->stream.next_out += uDoCopy; - pfile_in_zip_read_info->stream.next_in += uDoCopy; - pfile_in_zip_read_info->stream.total_out += uDoCopy; - iRead += uDoCopy; - break; - } - case UNZ_SHRUNK: - iRead = pfile_in_zip_read_info->rest_read_uncompressed; - unShrink (); - break; - case UNZ_REDUCED1: - case UNZ_REDUCED2: - case UNZ_REDUCED3: - case UNZ_REDUCED4: - iRead = pfile_in_zip_read_info->rest_read_uncompressed; - unReduce (); - break; - case UNZ_IMPLODED: - iRead = pfile_in_zip_read_info->rest_read_uncompressed; - err = explode (); - break; - case UNZ_DEFLATED: - { - uLong uTotalOutBefore, uTotalOutAfter; - const Bytef *bufBefore; - uLong uOutThis; - int flush = Z_SYNC_FLUSH; - - uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; - bufBefore = pfile_in_zip_read_info->stream.next_out; - - /* - * if ((pfile_in_zip_read_info->rest_read_uncompressed == - * pfile_in_zip_read_info->stream.avail_out) && - * (pfile_in_zip_read_info->rest_read_compressed == 0)) flush = - * Z_FINISH; - */ - err = inflate (&pfile_in_zip_read_info->stream, flush); - - uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; - uOutThis = uTotalOutAfter - uTotalOutBefore; - - pfile_in_zip_read_info->crc32 = - crc32 (pfile_in_zip_read_info->crc32, bufBefore, - (uInt) (uOutThis)); - - pfile_in_zip_read_info->rest_read_uncompressed -= - uOutThis; - - iRead += (uInt) (uTotalOutAfter - uTotalOutBefore); - - if (err == Z_STREAM_END) - return (iRead == 0) ? UNZ_EOF : iRead; - if (err != Z_OK) - break; - break; - } - default: - return (UNZ_EOF); - } - } - - if (err == Z_OK) - return iRead; - return err; -} - - -/* - * Give the current position in uncompressed data - */ -extern z_off_t ZEXPORT -unztell (unzFile file) -{ - unz_s *s; - file_in_zip_read_info_s *pfile_in_zip_read_info; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - pfile_in_zip_read_info = s->pfile_in_zip_read; - - if (pfile_in_zip_read_info == NULL) - return UNZ_PARAMERROR; - - return (z_off_t) pfile_in_zip_read_info->stream.total_out; -} - - -/* - * return 1 if the end of file was reached, 0 elsewhere - */ -extern int ZEXPORT -unzeof (unzFile file) -{ - unz_s *s; - file_in_zip_read_info_s *pfile_in_zip_read_info; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - pfile_in_zip_read_info = s->pfile_in_zip_read; - - if (pfile_in_zip_read_info == NULL) - return UNZ_PARAMERROR; - - if (pfile_in_zip_read_info->rest_read_uncompressed == 0) - return 1; - else - return 0; -} - - - -/* - * Read extra field from the current file (opened by unzOpenCurrentFile) This - * is the local-header version of the extra field (sometimes, there is more - * info in the local-header version than in the central-header) - * - * if buf==NULL, it return the size of the local extra field that can be read - * - * if buf!=NULL, len is the size of the buffer, the extra header is copied in - * buf. the return value is the number of bytes copied in buf, or (if <0) the - * error code - */ -extern int ZEXPORT -unzGetLocalExtrafield ( - unzFile file, - voidp buf, - unsigned len) -{ - unz_s *s; - file_in_zip_read_info_s *pfile_in_zip_read_info; - uInt read_now; - uLong size_to_read; - - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - pfile_in_zip_read_info = s->pfile_in_zip_read; - - if (pfile_in_zip_read_info == NULL) - return UNZ_PARAMERROR; - - size_to_read = (pfile_in_zip_read_info->size_local_extrafield - - pfile_in_zip_read_info->pos_local_extrafield); - - if (buf == NULL) - return (int) size_to_read; - - if (len > size_to_read) - read_now = (uInt) size_to_read; - else - read_now = (uInt) len; - - if (read_now == 0) - return 0; - - if (fseek (pfile_in_zip_read_info->file, - pfile_in_zip_read_info->offset_local_extrafield + - pfile_in_zip_read_info->pos_local_extrafield, SEEK_SET) != 0) - return UNZ_ERRNO; - - if (fread (buf, (uInt) size_to_read, 1, pfile_in_zip_read_info->file) != 1) - return UNZ_ERRNO; - - return (int) read_now; -} - -/* - * Close the file in zip opened with unzipOpenCurrentFile Return UNZ_CRCERROR - * if all the file was read but the CRC is not good - */ -extern int ZEXPORT -unzCloseCurrentFile (unzFile file) -{ - int err = UNZ_OK; - - unz_s *s; - file_in_zip_read_info_s *pfile_in_zip_read_info; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - pfile_in_zip_read_info = s->pfile_in_zip_read; - - if (pfile_in_zip_read_info == NULL) - return UNZ_PARAMERROR; - - - if (pfile_in_zip_read_info->rest_read_uncompressed == 0) - { - if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait) - err = UNZ_CRCERROR; - } - TRYFREE (pfile_in_zip_read_info->read_buffer); - pfile_in_zip_read_info->read_buffer = NULL; - if (pfile_in_zip_read_info->stream_initialised) - inflateEnd (&pfile_in_zip_read_info->stream); - - pfile_in_zip_read_info->stream_initialised = 0; - TRYFREE (pfile_in_zip_read_info); - - s->pfile_in_zip_read = NULL; - - return err; -} - - -/* - * Get the global comment string of the ZipFile, in the szComment buffer. - * uSizeBuf is the size of the szComment buffer. return the number of byte - * copied or an error code <0 - */ -extern int ZEXPORT -unzGetGlobalComment ( - unzFile file, - char *szComment, - uLong uSizeBuf) -{ - unz_s *s; - uLong uReadThis; - if (file == NULL) - return UNZ_PARAMERROR; - s = (unz_s *) file; - - uReadThis = uSizeBuf; - if (uReadThis > s->gi.size_comment) - uReadThis = s->gi.size_comment; - - if (fseek (s->file, s->central_pos + 22, SEEK_SET) != 0) - return UNZ_ERRNO; - - if (uReadThis > 0) - { - *szComment = '\0'; - if (fread (szComment, (uInt) uReadThis, 1, s->file) != 1) - return UNZ_ERRNO; - } - if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment)) - *(szComment + s->gi.size_comment) = '\0'; - return (int) uReadThis; -} |