adds fileout

src/hex.c

@@ -1,7 +1,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
-#include <stdbool.h>
 
 #include "include/hex.h"
 
@@ -32,27 +31,26 @@ void convert_text_to_hex(hex_chunk_t* chunk)
 	}
 }
 
-// TODO: clean up the text formatting to not print it every time
-void display_hex_chunk(hex_chunk_t* chunk)
+void display_hex_chunk(hex_chunk_t* chunk, FILE* stream)
 {
 	int i, j;
 
-	printf("%08x: \x1b[32m", chunk->line * 16);
+	fprintf(stream, "%08x: \x1b[32m", chunk->line * 16);
 	for (i = 0; i < HEX_LINE_LEN; i += 4) {
 		for (j = 0; j < 4; j += 2) {
 			if (((chunk->hex + i) + j)[0] == '0' && ((chunk->hex + i) + j)[1] == 'a')
-				printf("\x1b[33m%2.2s\x1b[32m", chunk->hex + i + j);
+				fprintf(stream, "\x1b[33m%2.2s\x1b[32m", chunk->hex + i + j);
 			else
-				printf("%2.2s", chunk->hex + i + j);
+				fprintf(stream, "%2.2s", chunk->hex + i + j);
 		}
-		printf(" ");
+		fprintf(stream, " ");
 	}
 
 	for (i = 0; i < TEXT_LINE_LEN; i++) {
 		if (chunk->text[i] == '\n' || chunk->text[i] == EOF)
-			printf("\x1b[33m.\x1b[32m");
+			fprintf(stream, "\x1b[33m.\x1b[32m");
 		else
-			printf("%c", chunk->text[i]);
+			fprintf(stream, "%c", chunk->text[i]);
 	}
-	puts("\x1b[0m");
+	fprintf(stream, "\x1b[0m\n");
 }

src/include/hex.h

@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #ifndef HEX_H
 #define HEX_H
 
@@ -13,6 +15,6 @@ typedef struct {
 void free_hex_chunk(hex_chunk_t* chunk);
 void add_text_to_chunk(char* src, char** dst);
 void convert_text_to_hex(hex_chunk_t* chunk);
-void display_hex_chunk(hex_chunk_t* chunk);
+void display_hex_chunk(hex_chunk_t* chunk, FILE* stream);
 
 #endif

src/main.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdbool.h>
 
 #include "include/hex.h"
 #include "include/file.h"
@@ -10,7 +11,7 @@ int get_hex_lines(int len)
 	int out;
 
 	out = len / 16;
-	if (len % 16 != 0)
+	if (len % 16 != 0) // if we have a less than a full line remaining
 		out++;
 
 	return out;
@@ -19,13 +20,24 @@ int get_hex_lines(int len)
 int main(int argc, char* argv[])
 {
 	char* file_content;
+	FILE* stream;
+	bool outfile;
 	int hex_lines, i;
 
-	if (argc != 2) {
+
+	if (argc < 2) {
 		fprintf(stderr, "Usage: %s [filename]\n", argv[0]);
 		return EXIT_FAILURE;
 	}
 
+	stream = stdout;
+	outfile = false;
+	if (argc == 3) {
+		stream = fopen(argv[2], "w");
+		outfile = true;
+	}
+
+
 	read_file_to_buf(argv[1], &file_content);
 	hex_lines = get_hex_lines(strlen(file_content));
 
@@ -39,10 +51,10 @@ int main(int argc, char* argv[])
 	}
 
 	for (i = 0; i < hex_lines; i++)
-		display_hex_chunk(&(lines[i]));
+		display_hex_chunk(&(lines[i]), stream);
 
-
-		
+	if (outfile)
+		fclose(stream);
 	free(file_content);	
 	for (i = 0; i < hex_lines; i++)
 		free_hex_chunk(&(lines[i]));