1 files changed, 0 insertions, 163 deletions
diff --git a/src/io.c b/src/io.c
deleted file mode 100644
index 53bc0dd..0000000
--- a/src/io.c
+++ /dev/null
@@ -1,163 +0,0 @@
-#include "unalf.h"
-#include "addrs.h"
-
-static int headers_read = 0;
-static int convert_eols = 0;
-
-static void die_arc(void) {
-	fprintf(stderr, "%s: fatal: this is an ARC file, not ALF\n", self);
-	exit(1);
-}
-
-static void die_not_alf(void) {
-	fprintf(stderr, "%s: fatal: not an ALF file\n", self);
-	exit(1);
-}
-
-/* truncating the file by name could be a race condition, but I don't
-   think it's going to be a real-world problem for anyone. */
-static void eof_junk(long pos) {
-	fprintf(stderr, "%s: junk at EOF (%s)\n", self, opts.fixjunk ? "removing" : "ignoring");
-	if(opts.fixjunk) {
-		if(truncate(in_filename, pos) < 0) {
-			fprintf(stderr, "%s: could not remove junk: ", self);
-			perror(in_filename);
-		}
-	}
-}
-
-static void check_hdr_size(const char *name, unsigned long size) {
-	const char *desc;
-
-	/* fits on a double-density disk? */
-	if(size < 184320)
-		return;
-
-	/* >= 16MB files are impossible because the decrunch algorithm
-		ignores the high byte of the 4-byte length. */
-	if(size >= 16777216L)
-		desc = "impossibly large (>=16MB)";
-	/* >1MB files are possible (e.g. with a hard drive on SpartaDOS X)
-		but exceedingly rare in the Atari world. */
-	else if(size > 1048576L)
-		desc = "suspiciously large (>1MB)";
-	else
-		desc = "too large for a floppy disk (>180KB)";
-
-	fprintf(stderr, "%s: header #%d %s size is %s.\n",
-			self, headers_read, name, desc);
-}
-
-static void sanity_check_header(void) {
-	check_hdr_size("original", getquad(alf_hdr_origsize0));
-	check_hdr_size("compressed", getquad(alf_hdr_compsize0));
-}
-
-/* return 1 if a header is read, 0 if not */
-int read_alf_header(void) {
-	u8 h1, h2;
-	int bytes;
-	long read_pos;
-
-	read_pos = ftell(in_file);
-
-	bytes = fread(mem + alf_header, 1, 29, in_file);
-
-	if(!bytes) {
-		if(headers_read)
-			return 0;
-		else
-			die_not_alf();
-	} else if(bytes < 29) {
-		if(headers_read) {
-			eof_junk(read_pos);
-			return 0;
-		} else {
-			die_not_alf();
-		}
-	}
-
-	h1 = mem[alf_header];
-	h2 = mem[alf_hdr_sig];
-
-	if(h1 == 0x1a) {
-		if(h2 < 0x0f) die_arc();
-		if(h2 == 0x0f) {
-			headers_read++;
-			sanity_check_header();
-			return 1; /* signature matches */
-		}
-	}
-
-	if(headers_read)
-		eof_junk(read_pos);
-	else
-		die_not_alf();
-
-	return 0;
-}
-
-/* read buf_len_l/h bytes into buf_adr_l/h, then store the number
-   of bytes actually read in buf_len_l/h. TODO: what about EOF? */
-void readblock(void) {
-	int bytes, len, bufadr;
-	u8 *buf;
-
-	bufadr = dpeek(buf_adr_l);
-	buf = mem + bufadr;
-	len = dpeek(buf_len_l);
-
-	// fprintf(stderr, "readblock, bufadr = $%04x, len = $%04x\n", bufadr, len);
-
-	bytes = fread(buf, 1, len, in_file);
-	dpoke(buf_len_l, bytes);
-}
-
-static int is_printable(u8 c) {
-	return (c == 0x9b || (c >= ' ' && c <= 124));
-}
-
-static int is_text_file(u8 *buf) {
-	return is_printable(buf[0]) && is_printable(buf[1]);
-}
-
-/* mirror of readblock(), plus EOL conversion if needed. With -a,
-   a file is considered text if its first 2 bytes are printable ATASCII,
-   including EOLs. With -aa, all files are converted. */
-void writeblock(void) {
-	int i, bytes, len, bufadr;
-	u8 *buf;
-
-	bufadr = dpeek(buf_adr_l);
-	buf = mem + bufadr;
-	len = dpeek(buf_len_l);
-
-	if(new_file) {
-		if(opts.txtconv > 1) {
-			convert_eols = 1;
-		} else if(opts.txtconv == 1 && len > 1) {
-			convert_eols = is_text_file(buf);
-		} else {
-			convert_eols = 0;
-		}
-	}
-	new_file = 0;
-
-	if(convert_eols) {
-		for(i = 0; i < len; i++) {
-			if(buf[i] == 0x9b) buf[i] = '\n';
-			if(buf[i] == 0x7f) buf[i] = '\t';
-		}
-	}
-
-	// fprintf(stderr, "writeblock, bufadr = $%04x, len = $%04x\n", bufadr, len);
-
-	bytes = fwrite(buf, 1, len, out_file);
-	if(bytes < 0) {
-		fprintf(stderr, "%s: fatal: ", self);
-		perror("write failed"); /* TODO: out_filename */
-		exit(1);
-	}
-	bytes_written += bytes;
-	dpoke(buf_len_l, bytes);
-}