| 1 | /*
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| 2 | * zip.cpp - zip/unzip files
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| 3 | * Copyright (C) 2003 Justin Karneges
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| 4 | *
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| 5 | * This library is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU Lesser General Public
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| 7 | * License as published by the Free Software Foundation; either
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| 8 | * version 2.1 of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This library is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 13 | * Lesser General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU Lesser General Public
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| 16 | * License along with this library; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 18 | *
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| 19 | */
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| 20 |
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| 21 | #include"zip.h"
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| 22 |
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| 23 | #include<qcstring.h>
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| 24 | #include<qstringlist.h>
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| 25 | #include<qfile.h>
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| 26 |
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| 27 | #include"minizip/unzip.h"
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| 28 |
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| 29 | class UnZipPrivate
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| 30 | {
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| 31 | public:
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| 32 | UnZipPrivate() {}
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| 33 |
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| 34 | QString name;
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| 35 | unzFile uf;
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| 36 | QStringList listing;
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| 37 | };
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| 38 |
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| 39 | UnZip::UnZip(const QString &name)
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| 40 | {
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| 41 | d = new UnZipPrivate;
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| 42 | d->uf = 0;
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| 43 | d->name = name;
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| 44 | }
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| 45 |
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| 46 | UnZip::~UnZip()
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| 47 | {
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| 48 | close();
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| 49 | delete d;
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| 50 | }
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| 51 |
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| 52 | void UnZip::setName(const QString &name)
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| 53 | {
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| 54 | d->name = name;
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| 55 | }
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| 56 |
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| 57 | const QString & UnZip::name() const
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| 58 | {
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| 59 | return d->name;
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| 60 | }
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| 61 |
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| 62 | bool UnZip::open()
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| 63 | {
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| 64 | close();
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| 65 |
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| 66 | d->uf = unzOpen(QFile::encodeName(d->name).data());
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| 67 | if(!d->uf)
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| 68 | return false;
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| 69 |
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| 70 | return getList();
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| 71 | }
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| 72 |
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| 73 | void UnZip::close()
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| 74 | {
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| 75 | if(d->uf) {
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| 76 | unzClose(d->uf);
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| 77 | d->uf = 0;
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| 78 | }
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| 79 |
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| 80 | d->listing.clear();
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| 81 | }
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| 82 |
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| 83 | const QStringList & UnZip::list() const
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| 84 | {
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| 85 | return d->listing;
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| 86 | }
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| 87 |
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| 88 | bool UnZip::getList()
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| 89 | {
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| 90 | unz_global_info gi;
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| 91 | int err = unzGetGlobalInfo(d->uf, &gi);
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| 92 | if(err != UNZ_OK)
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| 93 | return false;
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| 94 |
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| 95 | QStringList l;
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| 96 | for(int n = 0; n < (int)gi.number_entry; ++n) {
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| 97 | char filename_inzip[256];
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| 98 | unz_file_info file_info;
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| 99 | int err = unzGetCurrentFileInfo(d->uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
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| 100 | if(err != UNZ_OK)
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| 101 | return false;
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| 102 |
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| 103 | l += filename_inzip;
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| 104 |
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| 105 | if((n+1) < (int)gi.number_entry) {
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| 106 | err = unzGoToNextFile(d->uf);
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| 107 | if(err != UNZ_OK)
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| 108 | return false;
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | d->listing = l;
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| 113 |
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| 114 | return true;
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| 115 | }
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| 116 |
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| 117 | bool UnZip::readFile(const QString &fname, QByteArray *buf, int max)
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| 118 | {
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| 119 | int err = unzLocateFile(d->uf, QFile::encodeName(fname).data(), 0);
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| 120 | if(err != UNZ_OK)
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| 121 | return false;
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| 122 |
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| 123 | char filename_inzip[256];
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| 124 | unz_file_info file_info;
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| 125 | err = unzGetCurrentFileInfo(d->uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
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| 126 | if(err != UNZ_OK)
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| 127 | return false;
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| 128 |
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| 129 | err = unzOpenCurrentFile(d->uf);
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| 130 | if(err != UNZ_OK)
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| 131 | return false;
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| 132 |
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| 133 | QByteArray a(0);
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| 134 | QByteArray chunk(16384);
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| 135 | while(1) {
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| 136 | err = unzReadCurrentFile(d->uf, chunk.data(), chunk.size());
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| 137 | if(err < 0) {
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| 138 | unzCloseCurrentFile(d->uf);
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| 139 | return false;
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| 140 | }
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| 141 | if(err == 0)
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| 142 | break;
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| 143 |
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| 144 | int oldsize = a.size();
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| 145 | if(max > 0 && oldsize + err > max)
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| 146 | err = max - oldsize;
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| 147 | a.resize(oldsize + err);
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| 148 | memcpy(a.data() + oldsize, chunk.data(), err);
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| 149 |
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| 150 | if(max > 0 && (int)a.size() >= max)
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| 151 | break;
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| 152 | }
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| 153 |
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| 154 | err = unzCloseCurrentFile(d->uf);
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| 155 | if(err != UNZ_OK)
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| 156 | return false;
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| 157 |
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| 158 | *buf = a;
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| 159 | return true;
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| 160 | }
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