Userland: Move command-line utilities to Userland/Utilities/

2025-05-14 09:14:58 +00:00 · 2021-01-12 11:57:58 +01:00 · 2021-01-12 11:57:58 +01:00 · ececac65c2
commit ececac65c2
parent c4e2fd8123
142 changed files with 58 additions and 58 deletions
--- a/Userland/Utilities/wc.cpp
+++ b/Userland/Utilities/wc.cpp
@ -0,0 +1,146 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Emanuele Torre <torreemanuele6@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/String.h>
+#include <AK/Vector.h>
+#include <LibCore/ArgsParser.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+struct Count {
+    String name;
+    bool exists { true };
+    unsigned lines { 0 };
+    unsigned characters { 0 };
+    unsigned words { 0 };
+    size_t bytes { 0 };
+};
+
+bool g_output_line = false;
+bool g_output_byte = false;
+bool g_output_word = false;
+
+static void wc_out(const Count& count)
+{
+    if (g_output_line)
+        out("{:7} ", count.lines);
+    if (g_output_word)
+        out("{:7} ", count.words);
+    if (g_output_byte)
+        out("{:7} ", count.bytes);
+
+    outln("{:>14}", count.name);
+}
+
+static Count get_count(const String& file_specifier)
+{
+    Count count;
+    FILE* file_pointer = nullptr;
+    if (file_specifier == "-") {
+        count.name = "";
+        file_pointer = stdin;
+    } else {
+        count.name = file_specifier;
+        if ((file_pointer = fopen(file_specifier.characters(), "r")) == nullptr) {
+            warnln("wc: unable to open {}", file_specifier);
+            count.exists = false;
+            return count;
+        }
+    }
+
+    bool start_a_new_word = true;
+    for (int ch = fgetc(file_pointer); ch != EOF; ch = fgetc(file_pointer)) {
+        count.bytes++;
+        if (isspace(ch)) {
+            start_a_new_word = true;
+            if (ch == '\n')
+                count.lines++;
+        } else if (start_a_new_word) {
+            start_a_new_word = false;
+            count.words++;
+        }
+    }
+
+    if (file_pointer != stdin)
+        fclose(file_pointer);
+
+    return count;
+}
+
+static Count get_total_count(const Vector<Count>& counts)
+{
+    Count total_count { "total" };
+    for (auto& count : counts) {
+        total_count.lines += count.lines;
+        total_count.words += count.words;
+        total_count.characters += count.characters;
+        total_count.bytes += count.bytes;
+    }
+    return total_count;
+}
+
+int main(int argc, char** argv)
+{
+    if (pledge("stdio rpath", nullptr) < 0) {
+        perror("pledge");
+        return 1;
+    }
+
+    Vector<const char*> file_specifiers;
+
+    Core::ArgsParser args_parser;
+    args_parser.add_option(g_output_line, "Output line count", "lines", 'l');
+    args_parser.add_option(g_output_byte, "Output byte count", "bytes", 'c');
+    args_parser.add_option(g_output_word, "Output word count", "words", 'w');
+    args_parser.add_positional_argument(file_specifiers, "File to process", "file", Core::ArgsParser::Required::No);
+    args_parser.parse(argc, argv);
+
+    if (!g_output_line && !g_output_byte && !g_output_word)
+        g_output_line = g_output_byte = g_output_word = true;
+
+    Vector<Count> counts;
+    for (const auto& file_specifier : file_specifiers)
+        counts.append(get_count(file_specifier));
+
+    if (pledge("stdio", nullptr) < 0) {
+        perror("pledge");
+        return 1;
+    }
+
+    if (file_specifiers.is_empty())
+        counts.append(get_count("-"));
+    else if (file_specifiers.size() > 1)
+        counts.append(get_total_count(counts));
+
+    for (const auto& count : counts) {
+        if (count.exists)
+            wc_out(count);
+    }
+
+    return 0;
+}