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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 927 insertions, 0 deletions

diff --git a/src/gui/painting/qprinterinfo_unix.cpp b/src/gui/painting/qprinterinfo_unix.cpp
new file mode 100644
index 0000000000..38e9590b1d
--- /dev/null
+++ b/src/gui/painting/qprinterinfo_unix.cpp
@@ -0,0 +1,927 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qprinterinfo.h"
+#include "qprinterinfo_p.h"
+
+#include <qfile.h>
+#include <qfileinfo.h>
+#include <qdir.h>
+#include <qprintdialog.h>
+#include <qlibrary.h>
+#include <qtextstream.h>
+
+#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
+#  include <private/qcups_p.h>
+#  include <cups/cups.h>
+#  include <private/qpdf_p.h>
+#endif
+
+#include <private/qprinterinfo_unix_p.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_PRINTER
+
+#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
+// preserver names in ascending order for the binary search
+static const struct NamedPaperSize {
+    const char *const name;
+    QPrinter::PaperSize size;
+} named_sizes_map[QPrinter::NPageSize] = {
+    { "A0", QPrinter::A0 },
+    { "A1", QPrinter::A1 },
+    { "A2", QPrinter::A2 },
+    { "A3", QPrinter::A3 },
+    { "A4", QPrinter::A4 },
+    { "A5", QPrinter::A5 },
+    { "A6", QPrinter::A6 },
+    { "A7", QPrinter::A7 },
+    { "A8", QPrinter::A8 },
+    { "A9", QPrinter::A9 },
+    { "B0", QPrinter::B0 },
+    { "B1", QPrinter::B1 },
+    { "B10", QPrinter::B10 },
+    { "B2", QPrinter::B2 },
+    { "B4", QPrinter::B4 },
+    { "B5", QPrinter::B5 },
+    { "B6", QPrinter::B6 },
+    { "B7", QPrinter::B7 },
+    { "B8", QPrinter::B8 },
+    { "B9", QPrinter::B9 },
+    { "C5E", QPrinter::C5E },
+    { "Comm10E", QPrinter::Comm10E },
+    { "Custom", QPrinter::Custom },
+    { "DLE", QPrinter::DLE },
+    { "Executive", QPrinter::Executive },
+    { "Folio", QPrinter::Folio },
+    { "Ledger", QPrinter::Ledger },
+    { "Legal", QPrinter::Legal },
+    { "Letter", QPrinter::Letter },
+    { "Tabloid", QPrinter::Tabloid }
+};
+
+inline bool operator<(const char *name, const NamedPaperSize &data)
+{ return qstrcmp(name, data.name) < 0; }
+inline bool operator<(const NamedPaperSize &data, const char *name)
+{ return qstrcmp(data.name, name) < 0; }
+
+static inline QPrinter::PaperSize string2PaperSize(const char *name)
+{
+    const NamedPaperSize *r = qBinaryFind(named_sizes_map, named_sizes_map + QPrinter::NPageSize, name);
+    if (r - named_sizes_map != QPrinter::NPageSize)
+        return r->size;
+    return QPrinter::Custom;
+}
+
+static inline const char *paperSize2String(QPrinter::PaperSize size)
+{
+    for (int i = 0; i < QPrinter::NPageSize; ++i) {
+        if (size == named_sizes_map[i].size)
+            return named_sizes_map[i].name;
+    }
+    return 0;
+}
+#endif
+
+void qt_perhapsAddPrinter(QList<QPrinterDescription> *printers, const QString &name,
+                               QString host, QString comment,
+                               QStringList aliases)
+{
+    for (int i = 0; i < printers->size(); ++i)
+        if (printers->at(i).samePrinter(name))
+            return;
+
+#ifndef QT_NO_PRINTDIALOG
+    if (host.isEmpty())
+        host = QPrintDialog::tr("locally connected");
+#endif
+    printers->append(QPrinterDescription(name.simplified(), host.simplified(), comment.simplified(), aliases));
+}
+
+void qt_parsePrinterDesc(QString printerDesc, QList<QPrinterDescription> *printers)
+{
+    if (printerDesc.length() < 1)
+        return;
+
+    printerDesc = printerDesc.simplified();
+    int i = printerDesc.indexOf(QLatin1Char(':'));
+    QString printerName, printerComment, printerHost;
+    QStringList aliases;
+
+    if (i >= 0) {
+        // have ':' want '|'
+        int j = printerDesc.indexOf(QLatin1Char('|'));
+        if (j > 0 && j < i) {
+            printerName = printerDesc.left(j);
+            aliases = printerDesc.mid(j + 1, i - j - 1).split(QLatin1Char('|'));
+#ifndef QT_NO_PRINTDIALOG
+            // try extracting a comment from the aliases
+            printerComment = QPrintDialog::tr("Aliases: %1")
+                             .arg(aliases.join(QLatin1String(", ")));
+#endif
+        } else {
+            printerName = printerDesc.left(i);
+        }
+        // look for lprng pseudo all printers entry
+        i = printerDesc.indexOf(QRegExp(QLatin1String(": *all *=")));
+        if (i >= 0)
+            printerName = QString();
+        // look for signs of this being a remote printer
+        i = printerDesc.indexOf(QRegExp(QLatin1String(": *rm *=")));
+        if (i >= 0) {
+            // point k at the end of remote host name
+            while (printerDesc[i] != QLatin1Char('='))
+                i++;
+            while (printerDesc[i] == QLatin1Char('=') || printerDesc[i].isSpace())
+                i++;
+            j = i;
+            while (j < (int)printerDesc.length() && printerDesc[j] != QLatin1Char(':'))
+                j++;
+
+            // and stuff that into the string
+            printerHost = printerDesc.mid(i, j - i);
+        }
+    }
+    if (printerName.length())
+        qt_perhapsAddPrinter(printers, printerName, printerHost, printerComment,
+                             aliases);
+}
+
+int qt_parsePrintcap(QList<QPrinterDescription> *printers, const QString& fileName)
+{
+    QFile printcap(fileName);
+    if (!printcap.open(QIODevice::ReadOnly))
+        return NotFound;
+
+    char *line_ascii = new char[1025];
+    line_ascii[1024] = '\0';
+
+    QString printerDesc;
+    bool atEnd = false;
+
+    while (!atEnd) {
+        if (printcap.atEnd() || printcap.readLine(line_ascii, 1024) <= 0)
+            atEnd = true;
+        QString line = QString::fromLocal8Bit(line_ascii);
+        line = line.trimmed();
+        if (line.length() >= 1 && line[int(line.length()) - 1] == QLatin1Char('\\'))
+            line.chop(1);
+        if (line[0] == QLatin1Char('#')) {
+            if (!atEnd)
+                continue;
+        } else if (line[0] == QLatin1Char('|') || line[0] == QLatin1Char(':')
+                || line.isEmpty()) {
+            printerDesc += line;
+            if (!atEnd)
+                continue;
+        }
+
+        qt_parsePrinterDesc(printerDesc, printers);
+
+        // add the first line of the new printer definition
+        printerDesc = line;
+    }
+    delete[] line_ascii;
+    return Success;
+}
+
+/*!
+  \internal
+
+  Checks $HOME/.printers for a line matching '_default <name>' (where
+  <name> does not contain any white space). The first such match
+  results in <name> being returned.
+  If no lines match then an empty string is returned.
+*/
+QString qt_getDefaultFromHomePrinters()
+{
+    QFile file(QDir::homePath() + QLatin1String("/.printers"));
+    if (!file.open(QIODevice::ReadOnly))
+        return QString();
+    QString all(QLatin1String(file.readAll()));
+    QStringList words = all.split(QRegExp(QLatin1String("\\W+")), QString::SkipEmptyParts);
+    const int i = words.indexOf(QLatin1String("_default"));
+    if (i != -1 && i < words.size() - 1)
+        return words.at(i + 1);
+    return QString();
+}
+
+// solaris, not 2.6
+void qt_parseEtcLpPrinters(QList<QPrinterDescription> *printers)
+{
+    QDir lp(QLatin1String("/etc/lp/printers"));
+    QFileInfoList dirs = lp.entryInfoList();
+    if (dirs.isEmpty())
+        return;
+
+    QString tmp;
+    for (int i = 0; i < dirs.size(); ++i) {
+        QFileInfo printer = dirs.at(i);
+        if (printer.isDir()) {
+            tmp.sprintf("/etc/lp/printers/%s/configuration",
+                         printer.fileName().toAscii().data());
+            QFile configuration(tmp);
+            char *line = new char[1025];
+            QString remote(QLatin1String("Remote:"));
+            QString contentType(QLatin1String("Content types:"));
+            QString printerHost;
+            bool canPrintPostscript = false;
+            if (configuration.open(QIODevice::ReadOnly)) {
+                while (!configuration.atEnd() &&
+                        configuration.readLine(line, 1024) > 0) {
+                    if (QString::fromLatin1(line).startsWith(remote)) {
+                        const char *p = line;
+                        while (*p != ':')
+                            p++;
+                        p++;
+                        while (isspace((uchar) *p))
+                            p++;
+                        printerHost = QString::fromLocal8Bit(p);
+                        printerHost = printerHost.simplified();
+                    } else if (QString::fromLatin1(line).startsWith(contentType)) {
+                        char *p = line;
+                        while (*p != ':')
+                            p++;
+                        p++;
+                        char *e;
+                        while (*p) {
+                            while (isspace((uchar) *p))
+                                p++;
+                            if (*p) {
+                                char s;
+                                e = p;
+                                while (isalnum((uchar) *e))
+                                    e++;
+                                s = *e;
+                                *e = '\0';
+                                if (!qstrcmp(p, "postscript") ||
+                                     !qstrcmp(p, "any"))
+                                    canPrintPostscript = true;
+                                *e = s;
+                                if (s == ',')
+                                    e++;
+                                p = e;
+                            }
+                        }
+                    }
+                }
+                if (canPrintPostscript)
+                    qt_perhapsAddPrinter(printers, printer.fileName(),
+                                         printerHost, QLatin1String(""));
+            }
+            delete[] line;
+        }
+    }
+}
+
+// solaris 2.6
+char *qt_parsePrintersConf(QList<QPrinterDescription> *printers, bool *found)
+{
+    QFile pc(QLatin1String("/etc/printers.conf"));
+    if (!pc.open(QIODevice::ReadOnly)) {
+        if (found)
+            *found = false;
+        return 0;
+    }
+    if (found)
+        *found = true;
+
+    char *line = new char[1025];
+    line[1024] = '\0';
+
+    QString printerDesc;
+    int lineLength = 0;
+
+    char *defaultPrinter = 0;
+
+    while (!pc.atEnd() &&
+            (lineLength=pc.readLine(line, 1024)) > 0) {
+        if (*line == '#') {
+            *line = '\0';
+            lineLength = 0;
+        }
+        if (lineLength >= 2 && line[lineLength-2] == '\\') {
+            line[lineLength-2] = '\0';
+            printerDesc += QString::fromLocal8Bit(line);
+        } else {
+            printerDesc += QString::fromLocal8Bit(line);
+            printerDesc = printerDesc.simplified();
+            int i = printerDesc.indexOf(QLatin1Char(':'));
+            QString printerName, printerHost, printerComment;
+            QStringList aliases;
+            if (i >= 0) {
+                // have : want |
+                int j = printerDesc.indexOf(QLatin1Char('|'));
+                if (j >= i)
+                    j = -1;
+                printerName = printerDesc.mid(0, j < 0 ? i : j);
+                if (printerName == QLatin1String("_default")) {
+                    i = printerDesc.indexOf(
+                        QRegExp(QLatin1String(": *use *=")));
+                    while (printerDesc[i] != QLatin1Char('='))
+                        i++;
+                    while (printerDesc[i] == QLatin1Char('=') || printerDesc[i].isSpace())
+                        i++;
+                    j = i;
+                    while (j < (int)printerDesc.length() &&
+                            printerDesc[j] != QLatin1Char(':') && printerDesc[j] != QLatin1Char(','))
+                        j++;
+                    // that's our default printer
+                    defaultPrinter =
+                        qstrdup(printerDesc.mid(i, j-i).toAscii().data());
+                    printerName = QString();
+                    printerDesc = QString();
+                } else if (printerName == QLatin1String("_all")) {
+                    // skip it.. any other cases we want to skip?
+                    printerName = QString();
+                    printerDesc = QString();
+                }
+
+                if (j > 0) {
+                    // try extracting a comment from the aliases
+                    aliases = printerDesc.mid(j + 1, i - j - 1).split(QLatin1Char('|'));
+#ifndef QT_NO_PRINTDIALOG
+                    printerComment = QPrintDialog::tr("Aliases: %1")
+                                     .arg(aliases.join(QLatin1String(", ")));
+#endif
+                }
+                // look for signs of this being a remote printer
+                i = printerDesc.indexOf(
+                    QRegExp(QLatin1String(": *bsdaddr *=")));
+                if (i >= 0) {
+                    // point k at the end of remote host name
+                    while (printerDesc[i] != QLatin1Char('='))
+                        i++;
+                    while (printerDesc[i] == QLatin1Char('=') || printerDesc[i].isSpace())
+                        i++;
+                    j = i;
+                    while (j < (int)printerDesc.length() &&
+                            printerDesc[j] != QLatin1Char(':') && printerDesc[j] != QLatin1Char(','))
+                        j++;
+                    // and stuff that into the string
+                    printerHost = printerDesc.mid(i, j-i);
+                    // maybe stick the remote printer name into the comment
+                    if (printerDesc[j] == QLatin1Char(',')) {
+                        i = ++j;
+                        while (printerDesc[i].isSpace())
+                            i++;
+                        j = i;
+                        while (j < (int)printerDesc.length() &&
+                                printerDesc[j] != QLatin1Char(':') && printerDesc[j] != QLatin1Char(','))
+                            j++;
+                        if (printerName != printerDesc.mid(i, j-i)) {
+                            printerComment =
+                                QLatin1String("Remote name: ");
+                            printerComment += printerDesc.mid(i, j-i);
+                        }
+                    }
+                }
+            }
+            if (printerComment == QLatin1String(":"))
+                printerComment = QString(); // for cups
+            if (printerName.length())
+                qt_perhapsAddPrinter(printers, printerName, printerHost,
+                                     printerComment, aliases);
+            // chop away the line, for processing the next one
+            printerDesc = QString();
+        }
+    }
+    delete[] line;
+    return defaultPrinter;
+}
+
+#ifndef QT_NO_NIS
+
+#if defined(Q_C_CALLBACKS)
+extern "C" {
+#endif
+
+int qt_pd_foreach(int /*status */, char * /*key */, int /*keyLen */,
+                    char *val, int valLen, char *data)
+{
+    qt_parsePrinterDesc(QString::fromLatin1(val, valLen), (QList<QPrinterDescription> *)data);
+    return 0;
+}
+
+#if defined(Q_C_CALLBACKS)
+}
+#endif
+
+int qt_retrieveNisPrinters(QList<QPrinterDescription> *printers)
+{
+#ifndef QT_NO_LIBRARY
+    typedef int (*WildCast)(int, char *, int, char *, int, char *);
+    char printersConfByname[] = "printers.conf.byname";
+    char *domain;
+    int err;
+
+    QLibrary lib(QLatin1String("nsl"));
+    typedef int (*ypGetDefaultDomain)(char **);
+    ypGetDefaultDomain _ypGetDefaultDomain = (ypGetDefaultDomain)lib.resolve("yp_get_default_domain");
+    typedef int (*ypAll)(const char *, const char *, const struct ypall_callback *);
+    ypAll _ypAll = (ypAll)lib.resolve("yp_all");
+
+    if (_ypGetDefaultDomain && _ypAll) {
+        err = _ypGetDefaultDomain(&domain);
+        if (err == 0) {
+            ypall_callback cb;
+            // wild cast to support K&R-style system headers
+            (WildCast &) cb.foreach = (WildCast) qt_pd_foreach;
+            cb.data = (char *) printers;
+            err = _ypAll(domain, printersConfByname, &cb);
+        }
+        if (!err)
+            return Success;
+    }
+#endif //QT_NO_LIBRARY
+    return Unavail;
+}
+
+#endif // QT_NO_NIS
+
+char *qt_parseNsswitchPrintersEntry(QList<QPrinterDescription> *printers, char *line)
+{
+#define skipSpaces() \
+    while (line[k] != '\0' && isspace((uchar) line[k])) \
+        k++
+
+    char *defaultPrinter = 0;
+    bool stop = false;
+    int lastStatus = NotFound;
+
+    int k = 8;
+    skipSpaces();
+    if (line[k] != ':')
+        return 0;
+    k++;
+
+    char *cp = strchr(line, '#');
+    if (cp != 0)
+        *cp = '\0';
+
+    while (line[k] != '\0') {
+        if (isspace((uchar) line[k])) {
+            k++;
+        } else if (line[k] == '[') {
+            k++;
+            skipSpaces();
+            while (line[k] != '\0') {
+                char status = tolower(line[k]);
+                char action = '?';
+
+                while (line[k] != '=' && line[k] != ']' && line[k] != '\0')
+                    k++;
+                if (line[k] == '=') {
+                    k++;
+                    skipSpaces();
+                    action = tolower(line[k]);
+                    while (line[k] != '\0' && !isspace((uchar) line[k]) && line[k] != ']')
+                        k++;
+                } else if (line[k] == ']') {
+                    k++;
+                    break;
+                }
+                skipSpaces();
+
+                if (lastStatus == status)
+                    stop = (action == (char) Return);
+            }
+        } else {
+            if (stop)
+                break;
+
+            QByteArray source;
+            while (line[k] != '\0' && !isspace((uchar) line[k]) && line[k] != '[') {
+                source += line[k];
+                k++;
+            }
+
+            if (source == "user") {
+                lastStatus = qt_parsePrintcap(printers,
+                        QDir::homePath() + QLatin1String("/.printers"));
+            } else if (source == "files") {
+                bool found;
+                defaultPrinter = qt_parsePrintersConf(printers, &found);
+                if (found)
+                    lastStatus = Success;
+#ifndef QT_NO_NIS
+            } else if (source == "nis") {
+                lastStatus = qt_retrieveNisPrinters(printers);
+#endif
+            } else {
+                // nisplus, dns, etc., are not implemented yet
+                lastStatus = NotFound;
+            }
+            stop = (lastStatus == Success);
+        }
+    }
+    return defaultPrinter;
+}
+
+char *qt_parseNsswitchConf(QList<QPrinterDescription> *printers)
+{
+    QFile nc(QLatin1String("/etc/nsswitch.conf"));
+    if (!nc.open(QIODevice::ReadOnly))
+        return 0;
+
+    char *defaultPrinter = 0;
+
+    char *line = new char[1025];
+    line[1024] = '\0';
+
+    while (!nc.atEnd() &&
+            nc.readLine(line, 1024) > 0) {
+        if (qstrncmp(line, "printers", 8) == 0) {
+            defaultPrinter = qt_parseNsswitchPrintersEntry(printers, line);
+            delete[] line;
+            return defaultPrinter;
+        }
+    }
+
+    strcpy(line, "printers: user files nis nisplus xfn");
+    defaultPrinter = qt_parseNsswitchPrintersEntry(printers, line);
+    delete[] line;
+    return defaultPrinter;
+}
+
+// HP-UX
+void qt_parseEtcLpMember(QList<QPrinterDescription> *printers)
+{
+    QDir lp(QLatin1String("/etc/lp/member"));
+    if (!lp.exists())
+        return;
+    QFileInfoList dirs = lp.entryInfoList();
+    if (dirs.isEmpty())
+        return;
+
+#ifdef QT_NO_PRINTDIALOG
+    Q_UNUSED(printers);
+#else
+    QString tmp;
+    for (int i = 0; i < dirs.size(); ++i) {
+        QFileInfo printer = dirs.at(i);
+        // I haven't found any real documentation, so I'm guessing that
+        // since lpstat uses /etc/lp/member rather than one of the
+        // other directories, it's the one to use.  I did not find a
+        // decent way to locate aliases and remote printers.
+        if (printer.isFile())
+            qt_perhapsAddPrinter(printers, printer.fileName(),
+                                 QPrintDialog::tr("unknown"),
+                                 QLatin1String(""));
+    }
+#endif
+}
+
+// IRIX 6.x
+void qt_parseSpoolInterface(QList<QPrinterDescription> *printers)
+{
+    QDir lp(QLatin1String("/usr/spool/lp/interface"));
+    if (!lp.exists())
+        return;
+    QFileInfoList files = lp.entryInfoList();
+    if(files.isEmpty())
+        return;
+
+    for (int i = 0; i < files.size(); ++i) {
+        QFileInfo printer = files.at(i);
+
+        if (!printer.isFile())
+            continue;
+
+        // parse out some information
+        QFile configFile(printer.filePath());
+        if (!configFile.open(QIODevice::ReadOnly))
+            continue;
+
+        QByteArray line;
+        line.resize(1025);
+        QString namePrinter;
+        QString hostName;
+        QString hostPrinter;
+        QString printerType;
+
+        QString nameKey(QLatin1String("NAME="));
+        QString typeKey(QLatin1String("TYPE="));
+        QString hostKey(QLatin1String("HOSTNAME="));
+        QString hostPrinterKey(QLatin1String("HOSTPRINTER="));
+
+        while (!configFile.atEnd() &&
+                (configFile.readLine(line.data(), 1024)) > 0) {
+            QString uline = QString::fromLocal8Bit(line);
+            if (uline.startsWith(typeKey) ) {
+                printerType = uline.mid(nameKey.length());
+                printerType = printerType.simplified();
+            } else if (uline.startsWith(hostKey)) {
+                hostName = uline.mid(hostKey.length());
+                hostName = hostName.simplified();
+            } else if (uline.startsWith(hostPrinterKey)) {
+                hostPrinter = uline.mid(hostPrinterKey.length());
+                hostPrinter = hostPrinter.simplified();
+            } else if (uline.startsWith(nameKey)) {
+                namePrinter = uline.mid(nameKey.length());
+                namePrinter = namePrinter.simplified();
+            }
+        }
+        configFile.close();
+
+        printerType = printerType.trimmed();
+        if (printerType.indexOf(QLatin1String("postscript"), 0, Qt::CaseInsensitive) < 0)
+            continue;
+
+        int ii = 0;
+        while ((ii = namePrinter.indexOf(QLatin1Char('"'), ii)) >= 0)
+            namePrinter.remove(ii, 1);
+
+        if (hostName.isEmpty() || hostPrinter.isEmpty()) {
+            qt_perhapsAddPrinter(printers, printer.fileName(),
+                                 QLatin1String(""), namePrinter);
+        } else {
+            QString comment;
+            comment = namePrinter;
+            comment += QLatin1String(" (");
+            comment += hostPrinter;
+            comment += QLatin1Char(')');
+            qt_perhapsAddPrinter(printers, printer.fileName(),
+                                 hostName, comment);
+        }
+    }
+}
+
+
+// Every unix must have its own.  It's a standard.  Here is AIX.
+void qt_parseQconfig(QList<QPrinterDescription> *printers)
+{
+    QFile qconfig(QLatin1String("/etc/qconfig"));
+    if (!qconfig.open(QIODevice::ReadOnly))
+        return;
+
+    QTextStream ts(&qconfig);
+    QString line;
+
+    QString stanzaName; // either a queue or a device name
+    bool up = true; // queue up?  default true, can be false
+    QString remoteHost; // null if local
+    QString deviceName; // null if remote
+
+    QRegExp newStanza(QLatin1String("^[0-z\\-]*:$"));
+
+    // our basic strategy here is to process each line, detecting new
+    // stanzas.  each time we see a new stanza, we check if the
+    // previous stanza was a valid queue for a) a remote printer or b)
+    // a local printer.  if it wasn't, we assume that what we see is
+    // the start of the first stanza, or that the previous stanza was
+    // a device stanza, or that there is some syntax error (we don't
+    // report those).
+
+    do {
+        line = ts.readLine();
+        bool indented = line[0].isSpace();
+        line = line.simplified();
+
+        int i = line.indexOf(QLatin1Char('='));
+        if (indented && i != -1) { // line in stanza
+            QString variable = line.left(i).simplified();
+            QString value=line.mid(i+1, line.length()).simplified();
+            if (variable == QLatin1String("device"))
+                deviceName = value;
+            else if (variable == QLatin1String("host"))
+                remoteHost = value;
+            else if (variable == QLatin1String("up"))
+                up = !(value.toLower() == QLatin1String("false"));
+        } else if (line[0] == QLatin1Char('*')) { // comment
+            // nothing to do
+        } else if (ts.atEnd() || // end of file, or beginning of new stanza
+                    (!indented && line.contains(newStanza))) {
+            if (up && stanzaName.length() > 0 && stanzaName.length() < 21) {
+                if (remoteHost.length()) // remote printer
+                    qt_perhapsAddPrinter(printers, stanzaName, remoteHost,
+                                         QString());
+                else if (deviceName.length()) // local printer
+                    qt_perhapsAddPrinter(printers, stanzaName, QString(),
+                                         QString());
+            }
+            line.chop(1);
+            if (line.length() >= 1 && line.length() <= 20)
+                stanzaName = line;
+            up = true;
+            remoteHost.clear();
+            deviceName.clear();
+        } else {
+            // syntax error?  ignore.
+        }
+    } while (!ts.atEnd());
+}
+
+int qt_getLprPrinters(QList<QPrinterDescription>& printers)
+{
+    QByteArray etcLpDefault;
+    qt_parsePrintcap(&printers, QLatin1String("/etc/printcap"));
+    qt_parseEtcLpMember(&printers);
+    qt_parseSpoolInterface(&printers);
+    qt_parseQconfig(&printers);
+
+    QFileInfo f;
+    f.setFile(QLatin1String("/etc/lp/printers"));
+    if (f.isDir()) {
+        qt_parseEtcLpPrinters(&printers);
+        QFile def(QLatin1String("/etc/lp/default"));
+        if (def.open(QIODevice::ReadOnly)) {
+            etcLpDefault.resize(1025);
+            if (def.readLine(etcLpDefault.data(), 1024) > 0) {
+                QRegExp rx(QLatin1String("^(\\S+)"));
+                if (rx.indexIn(QString::fromLatin1(etcLpDefault)) != -1)
+                    etcLpDefault = rx.cap(1).toAscii();
+            }
+        }
+    }
+
+    char *def = 0;
+    f.setFile(QLatin1String("/etc/nsswitch.conf"));
+    if (f.isFile()) {
+        def = qt_parseNsswitchConf(&printers);
+    } else {
+        f.setFile(QLatin1String("/etc/printers.conf"));
+        if (f.isFile())
+            def = qt_parsePrintersConf(&printers);
+    }
+
+    if (def) {
+        etcLpDefault = def;
+        delete [] def;
+    }
+
+    QString homePrintersDefault = qt_getDefaultFromHomePrinters();
+
+    // all printers hopefully known.  try to find a good default
+    QString dollarPrinter;
+    {
+        dollarPrinter = QString::fromLocal8Bit(qgetenv("PRINTER"));
+        if (dollarPrinter.isEmpty())
+            dollarPrinter = QString::fromLocal8Bit(qgetenv("LPDEST"));
+        if (dollarPrinter.isEmpty())
+            dollarPrinter = QString::fromLocal8Bit(qgetenv("NPRINTER"));
+        if (dollarPrinter.isEmpty())
+            dollarPrinter = QString::fromLocal8Bit(qgetenv("NGPRINTER"));
+#ifndef QT_NO_PRINTDIALOG
+        if (!dollarPrinter.isEmpty())
+            qt_perhapsAddPrinter(&printers, dollarPrinter,
+                                 QPrintDialog::tr("unknown"),
+                                 QLatin1String(""));
+#endif
+    }
+
+    QRegExp ps(QLatin1String("[^a-z]ps(?:[^a-z]|$)"));
+    QRegExp lp(QLatin1String("[^a-z]lp(?:[^a-z]|$)"));
+
+    int quality = 0;
+    int best = 0;
+    for (int i = 0; i < printers.size(); ++i) {
+        QString name = printers.at(i).name;
+        QString comment = printers.at(i).comment;
+        if (quality < 5 && name == dollarPrinter) {
+            best = i;
+            quality = 5;
+        } else if (quality < 4 && !homePrintersDefault.isEmpty() &&
+                   name == homePrintersDefault) {
+            best = i;
+            quality = 4;
+        } else if (quality < 3 && !etcLpDefault.isEmpty() &&
+                    name == QLatin1String(etcLpDefault)) {
+            best = i;
+            quality = 3;
+        } else if (quality < 2 &&
+                    (name == QLatin1String("ps") ||
+                     ps.indexIn(comment) != -1)) {
+            best = i;
+            quality = 2;
+        } else if (quality < 1 &&
+                    (name == QLatin1String("lp") ||
+                     lp.indexIn(comment) > -1)) {
+            best = i;
+            quality = 1;
+        }
+    }
+
+    return best;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////
+
+QList<QPrinterInfo> QPrinterInfo::availablePrinters()
+{
+    QList<QPrinterInfo> printers;
+
+#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
+    if (QCUPSSupport::isAvailable()) {
+        QCUPSSupport cups;
+        int cupsPrinterCount = cups.availablePrintersCount();
+        const cups_dest_t* cupsPrinters = cups.availablePrinters();
+        for (int i = 0; i < cupsPrinterCount; ++i) {
+            QString printerName(QString::fromLocal8Bit(cupsPrinters[i].name));
+            if (cupsPrinters[i].instance)
+                printerName += QLatin1Char('/') + QString::fromLocal8Bit(cupsPrinters[i].instance);
+
+            QPrinterInfo printerInfo(printerName);
+            if (cupsPrinters[i].is_default)
+                printerInfo.d_ptr->isDefault = true;
+            printerInfo.d_ptr->cupsPrinterIndex = i;
+            printers.append(printerInfo);
+        }
+    } else
+#endif
+           {
+        QList<QPrinterDescription> lprPrinters;
+        int defprn = qt_getLprPrinters(lprPrinters);
+        // populating printer combo
+        foreach (const QPrinterDescription &description, lprPrinters)
+            printers.append(QPrinterInfo(description.name));
+        if (defprn >= 0 && defprn < printers.size())
+            printers[defprn].d_ptr->isDefault = true;
+    }
+
+    return printers;
+}
+
+QPrinterInfo QPrinterInfo::defaultPrinter()
+{
+    QList<QPrinterInfo> printers = availablePrinters();
+    foreach (const QPrinterInfo &printerInfo, printers) {
+        if (printerInfo.isDefault())
+            return printerInfo;
+    }
+
+    return printers.value(0);
+}
+
+QList<QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
+{
+#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
+    const Q_D(QPrinterInfo);
+
+    if (isNull())
+        return d->paperSizes;
+
+    if (!d->hasPaperSizes) {
+        d->hasPaperSizes = true;
+
+        if (QCUPSSupport::isAvailable()) {
+            // Find paper sizes from CUPS.
+            QCUPSSupport cups;
+            cups.setCurrentPrinter(d->cupsPrinterIndex);
+            const ppd_option_t* sizes = cups.pageSizes();
+            if (sizes) {
+                for (int j = 0; j < sizes->num_choices; ++j)
+                    d->paperSizes.append(string2PaperSize(sizes->choices[j].choice));
+            }
+        }
+    }
+
+    return d->paperSizes;
+#else
+    return QList<QPrinter::PaperSize>();
+#endif
+}
+
+#endif // QT_NO_PRINTER
+
+QT_END_NAMESPACE