Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 315 insertions, 0 deletions

diff --git a/unoidl/source/sourcetreeprovider.cxx b/unoidl/source/sourcetreeprovider.cxx
new file mode 100644
index 000000000..399329f30
--- /dev/null
+++ b/unoidl/source/sourcetreeprovider.cxx
@@ -0,0 +1,315 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+#include <sal/log.hxx>
+
+#include <map>
+#include <utility>
+#include <vector>
+
+#include <osl/file.h>
+#include <osl/file.hxx>
+#include <rtl/character.hxx>
+#include <rtl/ref.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/ustring.hxx>
+#include <unoidl/unoidl.hxx>
+
+#include "sourceprovider-scanner.hxx"
+#include "sourcetreeprovider.hxx"
+
+#if defined MACOSX
+#include <dirent.h>
+#include <osl/thread.h>
+#endif
+
+namespace unoidl::detail {
+
+namespace {
+
+//TODO: Bad hack to work around osl::FileStatus::getFileName not determining the
+// original spelling of a file name (not even with
+// osl_FileStatus_Mask_Validate):
+OUString getFileName(OUString const & uri, osl::FileStatus const & status) {
+#if defined MACOSX
+    sal_Int32 i = uri.lastIndexOf('/') + 1;
+    OUString path;
+    if (osl::FileBase::getSystemPathFromFileURL(uri.copy(0, i), path)
+        != osl::FileBase::E_None)
+    {
+        SAL_WARN(
+            "unoidl",
+            "cannot getSystemPathFromFileURL(" << uri.copy(0, i) << ")");
+        return status.getFileName();
+    }
+    OString dir(OUStringToOString(path, osl_getThreadTextEncoding()));
+    OString name(OUStringToOString(uri.subView(i), osl_getThreadTextEncoding()));
+    DIR * d = opendir(dir.getStr());
+    if (d == nullptr) {
+        SAL_WARN("unoidl", "cannot opendir(" << dir << ")");
+        return status.getFileName();
+    }
+    for (;;) {
+        dirent ent;
+        dirent * p;
+        int e = readdir_r(d, &ent, &p);
+        if (e != 0) {
+            SAL_WARN("unoidl", "cannot readdir_r");
+            closedir(d);
+            return status.getFileName();
+        }
+        if (p == nullptr) {
+            SAL_WARN(
+                "unoidl", "cannot find " << name << " via readdir of " << dir);
+            closedir(d);
+            return status.getFileName();
+        }
+        if (name.equalsIgnoreAsciiCase(p->d_name)) {
+            closedir(d);
+            return OUString(
+                p->d_name, std::strlen(p->d_name), osl_getThreadTextEncoding());
+        }
+    }
+#else
+    (void) uri;
+    return status.getFileName();
+#endif
+}
+
+bool exists(OUString const & uri, bool directory) {
+    osl::DirectoryItem item;
+    osl::FileStatus status(
+        osl_FileStatus_Mask_Type | osl_FileStatus_Mask_FileName);
+    return osl::DirectoryItem::get(uri, item) == osl::FileBase::E_None
+        && item.getFileStatus(status) == osl::FileBase::E_None
+        && (status.getFileType() == osl::FileStatus::Directory) == directory
+        && getFileName(uri, status) == uri.subView(uri.lastIndexOf('/') + 1);
+}
+
+class Cursor: public MapCursor {
+public:
+    Cursor(Manager& manager, OUString const & uri): manager_(manager), directory_(uri) {
+        auto const rc = directory_.open();
+        SAL_WARN_IF(
+            rc != osl::FileBase::E_None, "unoidl", "open(" << uri << ") failed with " << +rc);
+    }
+
+private:
+    virtual ~Cursor() noexcept override {}
+
+    virtual rtl::Reference<Entity> getNext(OUString *) override;
+
+    Manager& manager_;
+    osl::Directory directory_;
+};
+
+class SourceModuleEntity: public ModuleEntity {
+public:
+    SourceModuleEntity(Manager& manager, OUString uri): manager_(manager), uri_(std::move(uri)) {}
+
+private:
+    virtual ~SourceModuleEntity() noexcept override {}
+
+    virtual std::vector<OUString> getMemberNames() const override
+    { return std::vector<OUString>(); } //TODO
+
+    virtual rtl::Reference< MapCursor > createCursor() const override
+    { return new Cursor(manager_, uri_); }
+
+    Manager& manager_;
+    OUString uri_;
+};
+
+bool isValidFileName(std::u16string_view name, bool directory) {
+    for (size_t i = 0;; ++i) {
+        if (i == name.size()) {
+            if (i == 0) {
+                return false;
+            }
+            return directory;
+        }
+        auto const c = name[i];
+        if (c == '.') {
+            if (i == 0 || name[i - 1] == '_') {
+                return false;
+            }
+            return !directory && name.substr(i + 1) == u"idl";
+        } else if (c == '_') {
+            //TODO: Ignore case of name[0] only for case-insensitive file systems:
+            if (i == 0 || name[i - 1] == '_') {
+                return false;
+            }
+        } else if (rtl::isAsciiDigit(c)) {
+            if (i == 0) {
+                return false;
+            }
+        } else if (!rtl::isAsciiAlpha(c)) {
+            return false;
+        }
+    }
+}
+
+}
+
+rtl::Reference<Entity> Cursor::getNext(OUString * name) {
+    assert(name != nullptr);
+    for (;;) {
+        osl::DirectoryItem i;
+        auto rc = directory_.getNextItem(i);
+        switch (rc) {
+        case osl::FileBase::E_None:
+            {
+                osl::FileStatus stat(
+                    osl_FileStatus_Mask_Type | osl_FileStatus_Mask_FileName |
+                    osl_FileStatus_Mask_FileURL);
+                rc = i.getFileStatus(stat);
+                if (rc != osl::FileBase::E_None) {
+                    SAL_WARN(
+                        "unoidl",
+                        "getFileSatus in <" << directory_.getURL() << "> failed with " << +rc);
+                    continue;
+                }
+                auto const dir = stat.getFileType() == osl::FileStatus::Directory;
+                if (!isValidFileName(stat.getFileName(), dir)) {
+                    continue;
+                }
+                if (dir) {
+                    //TODO: Using osl::FileStatus::getFileName can likely cause issues on case-
+                    // insensitive/preserving file systems, see the free getFileName function above
+                    // (which likely goes unnoticed if module identifiers follow the convention of
+                    // being all-lowercase):
+                    *name = stat.getFileName();
+                    return new SourceModuleEntity(manager_, stat.getFileURL());
+                } else {
+                    SourceProviderScannerData data(&manager_);
+                    if (!parse(stat.getFileURL(), &data)) {
+                        SAL_WARN("unoidl", "cannot parse <" << stat.getFileURL() << ">");
+                        continue;
+                    }
+                    auto ent = data.entities.end();
+                    for (auto j = data.entities.begin(); j != data.entities.end(); ++j) {
+                        if (j->second.kind == SourceProviderEntity::KIND_EXTERNAL
+                            || j->second.kind == SourceProviderEntity::KIND_MODULE)
+                        {
+                            continue;
+                        }
+                        if (ent != data.entities.end()) {
+                            throw FileFormatException(
+                                stat.getFileURL(), "source file defines more than one entity");
+                        }
+                        ent = j;
+                    }
+                    if (ent == data.entities.end()) {
+                        throw FileFormatException(
+                            stat.getFileURL(), "source file defines no entity");
+                    }
+                    //TODO: Check that the entity's name matches the suffix of stat.getFileURL():
+                    *name = ent->first.copy(ent->first.lastIndexOf('.') + 1);
+                    return ent->second.entity;
+                }
+            }
+        default:
+            SAL_WARN( "unoidl", "getNext from <" << directory_.getURL() << "> failed with " << +rc);
+            [[fallthrough]];
+        case osl::FileBase::E_NOENT:
+            return {};
+        }
+    }
+}
+
+SourceTreeProvider::SourceTreeProvider(Manager & manager, OUString const & uri):
+    manager_(manager), uri_(uri.endsWith("/") ? uri : uri + "/")
+{}
+
+rtl::Reference<MapCursor> SourceTreeProvider::createRootCursor() const {
+    return new Cursor(manager_, uri_);
+}
+
+rtl::Reference<Entity> SourceTreeProvider::findEntity(OUString const & name)
+    const
+{
+    std::map< OUString, rtl::Reference<Entity> >::iterator ci(
+        cache_.find(name));
+    if (ci != cache_.end()) {
+        return ci->second;
+    }
+    // Match name against
+    //   name ::= identifier ("." identifier)*
+    //   identifier ::= upper-blocks | lower-block
+    //   upper-blocks ::= upper ("_"? alnum)*
+    //   lower-block :== lower alnum*
+    //   alnum ::= digit | upper | lower
+    //   digit ::= "0"--"9"
+    //   upper ::= "A"--"Z"
+    //   lower ::= "a"--"z"
+    OUStringBuffer buf(name);
+    sal_Int32 start = 0;
+    sal_Int32 i = 0;
+    for (; i != name.getLength(); ++i) {
+        sal_Unicode c = name[i];
+        if (c == '.') {
+            assert(i == start || i != 0);
+            if (i == start || name[i - 1] == '_') {
+                throw FileFormatException( //TODO
+                    "", "Illegal UNOIDL identifier \"" + name + "\"");
+            }
+            buf[i] = '/';
+            start = i + 1;
+        } else if (c == '_') {
+            assert(i == start || i != 0);
+            if (i == start || name[i - 1] == '_'
+                || !rtl::isAsciiUpperCase(name[start]))
+            {
+                throw FileFormatException( //TODO
+                    "", "Illegal UNOIDL identifier \"" + name + "\"");
+            }
+        } else if (rtl::isAsciiDigit(c)) {
+            if (i == start) {
+                throw FileFormatException( //TODO
+                    "", "Illegal UNOIDL identifier \"" + name + "\"");
+            }
+        } else if (!rtl::isAsciiAlpha(c)) {
+            throw FileFormatException( //TODO
+                "", "Illegal UNOIDL identifier \"" + name + "\"");
+        }
+    }
+    if (i == start) {
+        throw FileFormatException( //TODO
+            "", "Illegal UNOIDL identifier \"" + name + "\"");
+    }
+    OUString uri(uri_ + buf.makeStringAndClear());
+    rtl::Reference<Entity> ent;
+    // Prevent conflicts between foo/ and Foo.idl on case-preserving file
+    // systems:
+    if (exists(uri, true) && !exists(uri + ".idl", false)) {
+        ent = new SourceModuleEntity(manager_, uri);
+    } else {
+        uri += ".idl";
+        SourceProviderScannerData data(&manager_);
+        if (parse(uri, &data)) {
+            std::map<OUString, SourceProviderEntity>::const_iterator j(
+                data.entities.find(name));
+            if (j != data.entities.end()) {
+                ent = j->second.entity;
+            }
+            SAL_WARN_IF(
+                !ent.is(), "unoidl",
+                "<" << uri << "> does not define entity " << name);
+        }
+    }
+    cache_.emplace(name, ent);
+    return ent;
+}
+
+SourceTreeProvider::~SourceTreeProvider() noexcept {}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */