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Merge remote-tracking branch 'Kernel/master'
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135
Kernel/kshell/commands/ls.cpp
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135
Kernel/kshell/commands/ls.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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const char *ColorNodeType(FileNode *node)
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{
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if (node->IsRegularFile())
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return "\x1b[32m";
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else if (node->IsDirectory())
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return "\x1b[34m";
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else if (node->IsBlockDevice())
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return "\x1b[33m";
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else if (node->IsCharacterDevice())
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return "\x1b[33m";
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else if (node->IsFIFO())
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return "\x1b[33m";
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else if (node->IsSymbolicLink())
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return "\x1b[35m";
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else
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return "\x1b[0m";
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}
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__no_sanitize("alignment") size_t MaxNameLength(FileNode *nodes)
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{
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size_t maxLength = 0;
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kdirent *dirBuffer = new kdirent[16];
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ssize_t read = 0;
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off_t offset = 0;
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while ((read = nodes->ReadDir(dirBuffer, sizeof(kdirent) * 16, offset, LONG_MAX)) > 0)
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{
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if (read / sizeof(kdirent) == 0)
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break;
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off_t bufOffset = 0;
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debug("There are %ld entries in this directory", read / sizeof(kdirent));
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for (size_t i = 0; i < read / sizeof(kdirent); i++)
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{
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kdirent *dirent = (kdirent *)((uintptr_t)dirBuffer + bufOffset);
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if (dirent->d_reclen == 0)
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break;
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bufOffset += dirent->d_reclen;
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maxLength = std::max(maxLength, strlen(dirent->d_name));
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debug("dirent->d_name: %s (max length: %ld)", dirent->d_name, maxLength);
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}
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offset += read / sizeof(kdirent);
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}
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delete[] dirBuffer;
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return maxLength;
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}
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__no_sanitize("alignment") void PrintLS(FileNode *node)
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{
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size_t maxNameLength = MaxNameLength(node);
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int count = 0;
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bool first = true;
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kdirent *dirBuffer = new kdirent[16];
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ssize_t read = 0;
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off_t offset = 0;
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while ((read = node->ReadDir(dirBuffer, sizeof(kdirent) * 16, offset, LONG_MAX)) > 0)
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{
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if (read / sizeof(kdirent) == 0)
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break;
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off_t bufOffset = 0;
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for (size_t i = 0; i < read / sizeof(kdirent); i++)
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{
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if (count % 5 == 0 && !first)
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printf("\n");
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kdirent *dirent = (kdirent *)((uintptr_t)dirBuffer + bufOffset);
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if (dirent->d_reclen == 0)
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break;
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bufOffset += dirent->d_reclen;
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printf(" %s%-*s ", ColorNodeType(node), (int)maxNameLength, dirent->d_name);
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count++;
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first = false;
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}
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offset += read / sizeof(kdirent);
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}
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printf("\x1b[0m\n");
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delete[] dirBuffer;
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}
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void cmd_ls(const char *args)
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{
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if (args[0] == '\0')
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{
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FileNode *rootNode = thisProcess->CWD;
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if (rootNode == nullptr)
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rootNode = fs->GetRoot(0);
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PrintLS(rootNode);
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return;
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}
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FileNode *thisNode = fs->GetByPath(args, nullptr);
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if (thisNode == nullptr)
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{
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printf("ls: %s: No such file or directory\n", args);
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return;
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}
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if (!thisNode->IsDirectory())
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{
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printf("%s%s\n", ColorNodeType(thisNode), thisNode->Path.c_str());
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return;
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}
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PrintLS(thisNode);
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}
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