63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
#include "nox/stdio.h"
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#include "nox/memory.h"
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#include "nox/math.h"
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#define COMMAND_BUFFER_SIZE 512
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int read_command(char* command_buffer) {
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char chr = 0;
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int pos = 0;
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while (chr != '\n') {
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chr = getc();
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switch (chr) {
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case '\b': {
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if (pos > 0) pos--;
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break;
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}
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default: {
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if (pos < COMMAND_BUFFER_SIZE) {
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command_buffer[pos] = chr;
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pos++;
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}
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break;
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}
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}
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}
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command_buffer[--pos] = '\0';
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return pos;
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}
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bool handle_command(char* command_buffer) {
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int command_length = strlen(command_buffer);
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if (command_length < 2) return true;
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if (memcmp(command_buffer, "help", min(4, command_length))) {
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printf("Commands:\n");
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printf(" help | shows this help message\n");
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printf(" exit | exit noxsh\n");
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} else if (memcmp(command_buffer, "exit", min(4, command_length))) {
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printf("exiting noxsh\n");
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return false;
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} else {
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printf("Unknown command: '");
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printf(command_buffer);
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printf("'\n");
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}
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return true;
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}
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void _start() {
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printf("Welcome to the nox shell.\ntype 'help' for a list of commands\n");
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bool running = true;
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while(running) {
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printf("\n[/]=> ");
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char command_buffer[COMMAND_BUFFER_SIZE];
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read_command(command_buffer);
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running = handle_command(command_buffer);
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}
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} |