132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "6502.h"
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char *format;
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char lexed_buf[512][128][128];
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void lexer(FILE* infile) { // FIXME
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char str[100];
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int line_index = 0;
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while (fgets(str, 100, infile) != NULL){
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int word_index = 0;
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int char_index = 0; // FIXME
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for (size_t i = 0; i <= strlen(str); i++) {
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if (str[i] != ' ' && str[i] != '\n') {
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lexed_buf[line_index][word_index][char_index] = str[i];
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char_index++;
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} else if (str[i] == ' ') {
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word_index++;
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} else if (str[i] == '\n') {
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line_index++;
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}
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}
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}
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}
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void parser(char lexed_buf[512][128][128], FILE *outfile) { // outfile is needed to add it as argument to command functions
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// TODO
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for (int i = 0; i <= 512; i++) {
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// Parsing lines
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for (int j = 0; j <= 128; j++) {
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if (lexed_buf[i][j] == NULL)
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break;
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else if (lexed_buf[i][j][0] == '\0')
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break;
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if (!strcmp(lexed_buf[i][j], "NOP")) {
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nop(outfile);
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} else if (!strcmp(lexed_buf[i][j], "INX")) {
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inx(outfile);
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} else if (!strcmp(lexed_buf[i][j], "INY")) {
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iny(outfile);
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} else if (!strcmp(lexed_buf[i][j], "DEX")) {
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dex(outfile);
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} else if (!strcmp(lexed_buf[i][j], "DEY")) {
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dey(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TAX")) {
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tax(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TAY")) {
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tay(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TXA")) {
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txa(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TYA")) {
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tya(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TSX")) {
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tsx(outfile);
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} else if (!strcmp(lexed_buf[i][j], "TXS")) {
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txs(outfile);
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} else {
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printf("Unrecognized command: %s\n", lexed_buf[i][j]);
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break;
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}
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}
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}
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return;
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}
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void usage() {
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printf("%s - GRU Assembler\n", "gasm");
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printf("Usage: %s [OPTIONS] [--] filename \n", "gasm");
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printf(" %s -v\n", "gasm");
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printf("Options:\n");
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printf("\n");
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printf(" --help display this message\n");
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printf(" -o outfile write output to file\n");
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// TODO: add more flags
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}
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int main(int argc, char *argv[]){
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char *infilename = NULL;
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char *outfilename = NULL;
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if (argc == 1) {
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usage();
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return 0;
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} else if (argc >= 2) {
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for (int i = 1; i <= argc; i++) {
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if (argv[i][0] == '-') {
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char *arg = argv[i];
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argv[i]++;
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if(argv[i][0] == '-')
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argv[i]++;
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if (!strcmp(argv[i], "o")) {
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outfilename = argv[i+1];
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i+=2; // To skip next argument
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} else if (!strcmp(argv[i], "help")) {
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usage();
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return 0;
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} else {
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printf("Unknown argument: %s\n", arg);
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return 1;
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}
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} else {
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infilename = argv[i];
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}
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}
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}
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if (infilename == NULL) {
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printf("No input file\n");
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} else if (outfilename == NULL) {
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printf("No out file\n");
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}
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FILE *infile = fopen(infilename, "r");
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FILE *outfile = fopen(outfilename, "w");
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if (infile == NULL) {
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printf("Failed to open input file\n");
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return 1;
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}
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if (outfile == NULL) {
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printf("Failed to open out file\n");
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return 1;
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}
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lexer(infile);
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parser(lexed_buf, outfile);
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fclose(infile);
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fclose(outfile);
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return 0;
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}
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