Huffman Compression

app/main-e.c

@@ -0,0 +1,74 @@
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "bitio.h"
+#include "errhand.h"
+#include "main.h"
+
+void usage_exit(char* prog_name);
+
+/*main function for expansion of file (any file) */
+int main(int argc, char* argv[]) {
+
+	FILE* output;
+	BIT_FILE* input;
+
+	setbuf(stdout, NULL);
+
+	if (argc < 3)
+		usage_exit(argv[0]);
+	input = OpenInputBitFile(argv[1]);
+
+	if (input == NULL)
+		fatal_error("Error opening %s for input\n", argv[1]);
+
+	output = fopen(argv[2], "wb");
+
+	if (output == NULL)
+		fatal_error("Error opening %s for output\n", argv[2]);
+
+	printf("\nExpanding %s to %s\n", argv[1], argv[2]);
+
+	printf("Using %s\n", CompressionName);
+
+	argc -= 3;
+	argv += 3;
+
+	ExpandFile(input, output, argc, argv);
+	CloseInputBitFile(input);
+
+	fclose(output);
+
+	putc('\n', stdout);
+	return 0;
+}
+/* main function for expansion of file (any file) */
+
+void usage_exit(char* prog_name) {
+
+	char* short_name;
+	char* extension;
+
+	short_name = strrchr(prog_name, '\\');
+	if (short_name == NULL)
+		short_name = strrchr(prog_name, '/');
+	if (short_name == NULL)
+		short_name = strrchr(prog_name, ':');
+	if (short_name != NULL)
+		short_name++;
+	else
+		short_name = prog_name;
+
+	extension = strrchr(short_name, '.');
+
+	if (extension != NULL)
+		*extension = '\0';
+	
+	printf("\nUsage: %s %s\n", short_name, Usage);
+	exit(EXIT_SUCCESS);
+}