75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
#include "runner.h"
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int main(int argc, char *argv[]) {
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char *check_input;
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int token;
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FILE *output;
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if (argc == 1 || argc > 3 || (argc == 2 && is_alpha_file(argv[1], strlen(argv[1])) != 0)) {
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fprintf(stderr, "invalid input with 1, >3, or non .alpha arg \n");
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return -1; //no alpha file or too many args
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} else if (argc == 2) {
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arg = NO_ARG; //no argument but valid input
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yyin = fopen(argv[1], "r");
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} else {
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check_input = is_tok(argc, argv);
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if (strcmp(CHECK_OTHER, check_input) == 0 || strcmp(INVALID_ARG, check_input) == 0) {
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fprintf(stderr, "check_other or invalid_arg \n");
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return -1; //invalid argument (need to update as we add more valid arguments)
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}
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output = fopen(check_input, "w");
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arg = TOK_ARG; //it is a -tok arg with a valid alpha file at argv[2]
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yyin = fopen(argv[2], "r");
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}
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while (0 != (token = yylex())) {
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if (arg == TOK_ARG) {
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fprintf(output, "%d %d %3d \"%s\"\n", line_number, column_number, token, yytext);
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}
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}
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if (yyin != NULL) {
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fclose(yyin);
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}
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if (output != NULL && arg == TOK_ARG) {
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fclose(output);
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}
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return 0;
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}
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char *is_tok(int argc, char *argv[]) {
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if (argc == 3 && strcmp("-tok", argv[1]) == 0) {
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char *input_prog = argv[2];
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int file_len = strlen(input_prog);
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//check that input program is a .alpha file
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if (is_alpha_file(input_prog, file_len) != 0) {
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return INVALID_ARG;
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}
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const char *basename = input_prog;
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const char *slash = strrchr(input_prog, '/');
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if (slash != NULL) {
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basename = slash + 1;
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}
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// Calculate lengths
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int basename_len = strlen(basename);
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char* FILE_tok = calloc(basename_len - ALPHA_OFFSET + TOK_LEN + 1, sizeof(char));
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// Copy filename and add .tok extension
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strncpy(FILE_tok, basename, basename_len - ALPHA_OFFSET);
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strcat(FILE_tok, ".tok");
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return FILE_tok;
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}
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return CHECK_OTHER;
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}
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int is_alpha_file(char *file, int file_len) {
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if (strcmp(".alpha", file + sizeof(char) * (file_len - ALPHA_OFFSET)) != 0) {
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return -1; //not alpha file
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}
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return 0; //is alpha file
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}
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