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Merge remote-tracking branch 'Kernel/master'
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61
Kernel/kshell/commands/cat.cpp
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61
Kernel/kshell/commands/cat.cpp
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/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "../cmds.hpp"
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#include <filesystem.hpp>
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#include "../../kernel.h"
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using namespace vfs;
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void cmd_cat(const char *args)
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{
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if (args[0] == '\0')
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return;
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FileNode *node = fs->GetByPath(args, nullptr);
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if (node == nullptr)
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{
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printf("cat: %s: No such file or directory\n", args);
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return;
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}
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if (!node->IsRegularFile() && !node->IsCharacterDevice())
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{
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printf("cat: %s: Not a regular file or character device\n", args);
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return;
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}
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if (node->IsCharacterDevice())
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{
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printf("cat: %s: Character devices are not supported yet\n", args);
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return;
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}
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kstat stat = {};
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node->Stat(&stat);
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uint8_t *buffer = new uint8_t[stat.Size + 1];
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ssize_t rBytes = node->Read(buffer, stat.Size, 0);
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if (rBytes > 0)
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printf("%s\n", buffer);
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else
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printf("cat: %s: Could not read file\n", args);
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delete[] buffer;
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}
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