Initial commit

src/kernel/cli_apps/fs_commands.c

@@ -0,0 +1,241 @@
+#include "cli_utils.h"
+#include "fat32.h"
+
+void cli_cmd_cd(char *args) {
+    if (!args || args[0] == 0) {
+        // No argument - show current directory
+        char cwd[256];
+        fat32_get_current_dir(cwd, sizeof(cwd));
+        cli_write("Current directory: ");
+        cli_write(cwd);
+        cli_write("\n");
+        return;
+    }
+    
+    // Parse argument
+    char path[256];
+    int i = 0;
+    while (args[i] && args[i] != ' ' && args[i] != '\t') {
+        path[i] = args[i];
+        i++;
+    }
+    path[i] = 0;
+    
+    if (fat32_chdir(path)) {
+        char cwd[256];
+        fat32_get_current_dir(cwd, sizeof(cwd));
+        cli_write("Changed to: ");
+        cli_write(cwd);
+        cli_write("\n");
+    } else {
+        cli_write("Error: Cannot change to directory: ");
+        cli_write(path);
+        cli_write("\n");
+    }
+}
+
+void cli_cmd_pwd(char *args) {
+    (void)args;
+    char cwd[256];
+    fat32_get_current_dir(cwd, sizeof(cwd));
+    cli_write(cwd);
+    cli_write("\n");
+}
+
+void cli_cmd_ls(char *args) {
+    char path[256];
+    
+    if (!args || args[0] == 0) {
+        // List current directory
+        fat32_get_current_dir(path, sizeof(path));
+    } else {
+        // Parse argument
+        int i = 0;
+        while (args[i] && args[i] != ' ' && args[i] != '\t') {
+            path[i] = args[i];
+            i++;
+        }
+        path[i] = 0;
+    }
+    
+    FAT32_FileInfo entries[256];
+    int count = fat32_list_directory(path, entries, 256);
+    
+    if (count < 0) {
+        cli_write("Error: Cannot list directory\n");
+        return;
+    }
+    
+    for (int i = 0; i < count; i++) {
+        cli_write(entries[i].name);
+        if (entries[i].is_directory) {
+            cli_write("/");
+        }
+        cli_write("  (");
+        cli_write_int(entries[i].size);
+        cli_write(" bytes)\n");
+    }
+    
+    cli_write("\n");
+    cli_write("Total: ");
+    cli_write_int(count);
+    cli_write(" items\n");
+}
+
+void cli_cmd_mkdir(char *args) {
+    if (!args || args[0] == 0) {
+        cli_write("Usage: mkdir <dirname>\n");
+        return;
+    }
+    
+    char dirname[256];
+    int i = 0;
+    while (args[i] && args[i] != ' ' && args[i] != '\t') {
+        dirname[i] = args[i];
+        i++;
+    }
+    dirname[i] = 0;
+    
+    if (fat32_mkdir(dirname)) {
+        cli_write("Created directory: ");
+        cli_write(dirname);
+        cli_write("\n");
+    } else {
+        cli_write("Error: Cannot create directory\n");
+    }
+}
+
+void cli_cmd_rm(char *args) {
+    if (!args || args[0] == 0) {
+        cli_write("Usage: rm <filename>\n");
+        return;
+    }
+    
+    char filename[256];
+    int i = 0;
+    while (args[i] && args[i] != ' ' && args[i] != '\t') {
+        filename[i] = args[i];
+        i++;
+    }
+    filename[i] = 0;
+    
+    if (fat32_delete(filename)) {
+        cli_write("Deleted: ");
+        cli_write(filename);
+        cli_write("\n");
+    } else {
+        cli_write("Error: Cannot delete file\n");
+    }
+}
+
+void cli_cmd_echo(char *args) {
+    if (!args || args[0] == 0) {
+        cli_write("\n");
+        return;
+    }
+    
+    // Check for redirection operators
+    char *redirect_ptr = NULL;
+    char redirect_mode = 0;  // '>' for write, 'a' for append
+    char output_file[256] = {0};
+    char echo_text[512] = {0};
+    
+    // Find > or >>
+    for (int i = 0; args[i]; i++) {
+        if (args[i] == '>' && args[i+1] == '>') {
+            redirect_ptr = args + i + 2;
+            redirect_mode = 'a';  // append
+            // Copy text before redirection
+            for (int j = 0; j < i; j++) {
+                echo_text[j] = args[j];
+            }
+            echo_text[i] = 0;
+            break;
+        } else if (args[i] == '>') {
+            redirect_ptr = args + i + 1;
+            redirect_mode = '>';  // write
+            // Copy text before redirection
+            for (int j = 0; j < i; j++) {
+                echo_text[j] = args[j];
+            }
+            echo_text[i] = 0;
+            break;
+        }
+    }
+    
+    // If no redirection, just print the text
+    if (!redirect_ptr) {
+        cli_write(args);
+        cli_write("\n");
+        return;
+    }
+    
+    // Parse output filename
+    int i = 0;
+    while (redirect_ptr[i] && (redirect_ptr[i] == ' ' || redirect_ptr[i] == '\t')) {
+        i++;
+    }
+    
+    int j = 0;
+    while (redirect_ptr[i] && redirect_ptr[i] != ' ' && redirect_ptr[i] != '\t') {
+        output_file[j++] = redirect_ptr[i++];
+    }
+    output_file[j] = 0;
+    
+    if (!output_file[0]) {
+        cli_write("Error: No output file specified\n");
+        return;
+    }
+    
+    // Open file
+    const char *mode = (redirect_mode == 'a') ? "a" : "w";
+    FAT32_FileHandle *fh = fat32_open(output_file, mode);
+    if (!fh) {
+        cli_write("Error: Cannot open file for writing\n");
+        return;
+    }
+    
+    // Write text
+    int text_len = 0;
+    while (echo_text[text_len]) text_len++;
+    
+    fat32_write(fh, echo_text, text_len);
+    fat32_write(fh, "\n", 1);
+    fat32_close(fh);
+    
+    cli_write("Wrote to: ");
+    cli_write(output_file);
+    cli_write("\n");
+}
+
+void cli_cmd_cat(char *args) {
+    if (!args || args[0] == 0) {
+        cli_write("Usage: cat <filename>\n");
+        return;
+    }
+    
+    char filename[256];
+    int i = 0;
+    while (args[i] && args[i] != ' ' && args[i] != '\t') {
+        filename[i] = args[i];
+        i++;
+    }
+    filename[i] = 0;
+    
+    FAT32_FileHandle *fh = fat32_open(filename, "r");
+    if (!fh) {
+        cli_write("Error: Cannot open file\n");
+        return;
+    }
+    
+    // Read and display file
+    char buffer[4096];
+    int bytes_read;
+    while ((bytes_read = fat32_read(fh, buffer, sizeof(buffer))) > 0) {
+        for (int j = 0; j < bytes_read; j++) {
+            cli_putchar(buffer[j]);
+        }
+    }
+    
+    fat32_close(fh);
+}