103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
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/*
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* ToAruOS Kernel Shell
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*/
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#include <system.h>
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#include <fs.h>
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void
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start_shell() {
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char path[1024];
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fs_node_t * node = fs_root;
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path[0] = '/';
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path[1] = '\0';
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while (1) {
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char buffer[1024];
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int size;
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kprintf("kernel %s> ", path);
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size = kgets((char *)&buffer, 1023);
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if (size < 1) {
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continue;
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} else {
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/*
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* Tokenize the command
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*/
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char * pch;
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char * cmd;
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char * save;
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pch = strtok_r(buffer," ",&save);
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cmd = pch;
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char * argv[1024];
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int tokenid = 0;
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while (pch != NULL) {
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argv[tokenid] = (char *)pch;
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++tokenid;
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pch = strtok_r(NULL," ",&save);
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}
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argv[tokenid] = NULL;
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/*
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* Execute the command
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*/
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if (!strcmp(cmd, "cd")) {
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if (tokenid < 2) {
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kprintf("cd: argument expected\n");
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continue;
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} else {
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if (argv[1][0] == '/') {
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fs_node_t * chd = kopen(argv[1], 0);
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if (chd) {
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node = chd;
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memcpy(path, argv[1], strlen(argv[1]));
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path[strlen(argv[1])] = '\0';
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} else {
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kprintf("cd: could not change directory\n");
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}
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}
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}
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} else if (!strcmp(cmd, "cat")) {
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if (tokenid < 2) {
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kprintf("cat: argument expected\n");
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continue;
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} else {
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if (argv[1][0] == '/') {
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fs_node_t * file = kopen(argv[1],0);
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if (!file) {
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kprintf("cat: could not open file `%s`\n", argv[1]);
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continue;
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}
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char *bufferb = malloc(file->length + 200);
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size_t bytes_read = read_fs(file, 0, file->length, (uint8_t *)bufferb);
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size_t i = 0;
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for (i = 0; i < bytes_read; ++i) {
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writech(bufferb[i]);
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}
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free(bufferb);
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close_fs(file);
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}
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}
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} else if (!strcmp(cmd, "echo")) {
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if (tokenid < 2) {
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continue;
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} else {
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int i = 1;
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for (i = 1; i < tokenid; ++i) {
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kprintf("%s ", argv[i]);
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}
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kprintf("\n");
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}
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} else if (!strcmp(cmd, "ls")) {
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struct dirent * entry = NULL;
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int i = 0;
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entry = readdir_fs(node, i);
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while (entry != NULL) {
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kprintf("%s\n", entry->name);
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free(entry);
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i++;
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entry = readdir_fs(node, i);
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}
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} else {
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kprintf("Unrecognized command: %s\n", cmd);
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}
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}
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}
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}
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