added a preprocessor with include statements except it doesn't work

1 files changed, 53 insertions, 1 deletions

diff --git a/precedent.c b/precedent.c
index b609fff..81555b9 100644
--- a/precedent.c
+++ b/precedent.c
@@ -1,6 +1,8 @@
 #include <stdlib.h>
+#include <ctype.h>
 #include <stdio.h>
 #include <string.h>
+#include <libgen.h>
 #include "precedent.h"
 #include "hashtable.h"
 #include "parse.h"
@@ -29,7 +31,15 @@ int main(int argc, char** argv) {
 		printf("usage: precedent <file> [--visualize] [--version] [--help]\n");
 		return 0;
 	}
-	sym_t* finalSymbol = parse_symbol_final(read_file(argv[1]));
+	/* dirname may modify path, copy first */
+	char* path = argv[1];
+	char* pathCpy = malloc((strlen(path) + 1) * sizeof(char));
+	strcpy(pathCpy, path);
+	char* dirName = dirname(pathCpy);
+	char* baseDir = malloc((strlen(dirName) + 2) * sizeof(char));
+	strcpy(baseDir, dirName);
+	strcat(baseDir, "/");
+	sym_t* finalSymbol = parse_symbol_final(read_file(path));
 	if (visual) {
 		printf("--BEGIN VISUALIZATION--\n");
 		write_symbol_visual(finalSymbol, 0);
@@ -37,6 +47,9 @@ int main(int argc, char** argv) {
 	}
 	init_eval();
 	eval(finalSymbol);
+	free(dirName);
+	free(pathCpy);
+	free(baseDir);
 	return 0;
 }
 char* read_file(char* path) {
@@ -50,3 +63,42 @@ char* read_file(char* path) {
 	out[length] = '\0';
 	return out;
 }
+/* wtf */
+char* preprocess(char* str, char* baseDir) {
+	char* final = str;
+	while (1) {
+		int i = 0;
+		while (str[i] != '@') {
+			i++;
+			if (str[i] == '\0') {
+				printf("%s\n", final);
+				return final;
+			}
+		}
+		i++;
+		char* includeName = malloc(20 * sizeof(char));
+		int f = 0;
+		while (isalnum(str[i]) || str[i] == '/' || str[i] == '.' || str[i] == '_') {
+			includeName[f] = str[i];
+			str[i] = ' ';
+			i++;
+			f++;
+		}
+		final = str;
+		includeName[f] = '\0';
+		char* path = malloc((strlen(baseDir) + strlen(includeName) + 1) * sizeof(char));
+		strcpy(path, baseDir);
+		strcat(path, includeName);
+		char* toInclude = preprocess(read_file(path), baseDir);
+		char* newStr = malloc((strlen(toInclude) + strlen(final) + 1) * sizeof(char));
+		strcpy(newStr, toInclude);
+		strcat(newStr, final);
+		/*
+		free(includeName);
+		free(path);
+		free(str);
+		free(toInclude);
+		*/
+		final = newStr;
+	}
+}