main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct
{
	char name[50];
	char value[256];
} Variable;

#define MAX_STRING 256
char text[MAX_STRING];

#define MAX_VARIABLES 100
Variable variables[MAX_VARIABLES];
int var_count = 0;

void set_variable(const char *name, const char *value)
{
	for (int i = 0; i < var_count; i++)
	{
		if (strcmp(variables[i].name, name) == 0)
		{
			strncpy(variables[i].value, value, sizeof(variables[i].value));
			return;
		}
	}
	strncpy(variables[var_count].name, name, sizeof(variables[var_count].name));
	strncpy(variables[var_count].value, value, sizeof(variables[var_count].value));
	var_count++;
}

const char *get_variable(const char *name)
{
	for (int i = 0; i < var_count; i++)
	{
		if (strcmp(variables[i].name, name) == 0)
		{
			return variables[i].value;
		}
	}
	return NULL;
}

void remove_quotes(char *str)
{
	size_t len = strlen(str);
	if (str[0] == '"' && str[len - 1] == '"')
	{
		memmove(str, str + 1, len - 2);
		str[len - 2] = '\0';
	}
}

void interpret_line(char *line)
{
	if (strncmp(line, "keep", 4) == 0)
	{
		char name[50], value[256];
		if (sscanf(line, "keep %49[^=]= %255[^;];", name, value) == 2)
		{
			char *trimmed_name = strtok(name, " \t");
			remove_quotes(value);
			set_variable(trimmed_name, value);
		}
	}
	else if (strncmp(line, "say", 3) == 0)
	{
		char arg[256];
		if (sscanf(line, "say(\"%255[^\"]\");", text) == 1)
		{
			char *endQuotes = strchr(line, '"');
			if (endQuotes)
			{
				endQuotes = strchr(endQuotes + 1, '"');
				if (endQuotes && strlen(text) >= MAX_STRING - 1)
				{
					printf("Error: string exceeds max length of %d characters\n", MAX_STRING - 1);
				}
				else
				{
					printf("%s\n", text);
				}
			}
		}
		else
		{
			printf("Syntax error in say command.\n");
		}
	}
	else if (strncmp(line, "get", 3) == 0)
	{
		char name[50];
		if (sscanf(line, "get %49[^;];", name) == 1)
		{
			const char *value = get_variable(name);
			if (value)
			{
				printf("%s\n", value);
			}
			else
			{
				printf("Variable '%s' not found.\n", name);
			}
		}
	}
	else if (strncmp(line, "remove", 6) == 0)
	{
		char name[50];
		if (sscanf(line, "remove %49[^;];", name) == 1)
		{
			for (int i = 0; i < var_count; i++)
			{
				if (strcmp(variables[i].name, name) == 0)
				{
					for (int j = i; j < var_count - 1; j++)
					{
						variables[j] = variables[j + 1];
					}
					var_count--;
					return;
				}
			}
			printf("Variable '%s' not found.\n", name);
		}
	}
	else
	{
		printf("Unknown command: %s", line);
	}
}

int main(int argc, char *argv[])
{
	if (argc < 2)
	{
		printf("Usage: %s <file.jc>\n", argv[0]);
		return 1;
	}

	FILE *file = fopen(argv[1], "r");
	if (!file)
	{
		perror("Could not open file");
		return 1;
	}

	char line[512];
	while (fgets(line, sizeof(line), file))
	{
		interpret_line(line);
	}

	fclose(file);
	return 0;
}