1 files changed, 379 insertions, 0 deletions
diff --git a/libhfs_iso/data.c b/libhfs_iso/data.c
new file mode 100644
index 0000000..3f503f4
--- /dev/null
+++ b/libhfs_iso/data.c
@@ -0,0 +1,379 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)data.c	1.5 02/02/10 joerg */
+/*
+ * hfsutils - tools for reading and writing Macintosh HFS volumes
+ * Copyright (C) 1996, 1997 Robert Leslie
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <mconfig.h>
+#include <strdefs.h>
+#include <timedefs.h>
+
+#include "internal.h"
+#include "data.h"
+#include "btree.h"
+
+#ifdef APPLE_HYB
+/*
+ *	Depending on the version, AppleDouble/Single stores dates
+ *	relative to 1st Jan 1904 (v1) or 1st Jan 2000 (v2)
+ *
+ *	DUTDIFF is the difference between 1st Jan 2000 and
+ *	1st Jan 1970 (Unix epoch)).
+ */
+
+#define DUTDIFF 946684800L
+#endif /* APPLE_HYB */
+#define MUTDIFF	2082844800L
+#define	TZNONE	0x0FFFFFFFL	/* A timezone diff that cannot occur */
+
+static	void	calctzdiff(void);
+
+static
+unsigned long tzdiff = TZNONE;
+
+static
+unsigned char hfs_charorder[256] = {
+  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+
+  0x20, 0x22, 0x23, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
+  0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,
+  0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
+  0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46,
+
+  0x47, 0x48, 0x58, 0x5a, 0x5e, 0x60, 0x67, 0x69,
+  0x6b, 0x6d, 0x73, 0x75, 0x77, 0x79, 0x7b, 0x7f,
+  0x8d, 0x8f, 0x91, 0x93, 0x96, 0x98, 0x9f, 0xa1,
+  0xa3, 0xa5, 0xa8, 0xaa, 0xab, 0xac, 0xad, 0xae,
+
+  0x54, 0x48, 0x58, 0x5a, 0x5e, 0x60, 0x67, 0x69,
+  0x6b, 0x6d, 0x73, 0x75, 0x77, 0x79, 0x7b, 0x7f,
+  0x8d, 0x8f, 0x91, 0x93, 0x96, 0x98, 0x9f, 0xa1,
+  0xa3, 0xa5, 0xa8, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3,
+
+  0x4c, 0x50, 0x5c, 0x62, 0x7d, 0x81, 0x9a, 0x55,
+  0x4a, 0x56, 0x4c, 0x4e, 0x50, 0x5c, 0x62, 0x64,
+  0x65, 0x66, 0x6f, 0x70, 0x71, 0x72, 0x7d, 0x89,
+  0x8a, 0x8b, 0x81, 0x83, 0x9c, 0x9d, 0x9e, 0x9a,
+
+  0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0x95,
+  0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0x52, 0x85,
+  0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8,
+  0xc9, 0xca, 0xcb, 0x57, 0x8c, 0xcc, 0x52, 0x85,
+
+  0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0x26,
+  0x27, 0xd4, 0x20, 0x4a, 0x4e, 0x83, 0x87, 0x87,
+  0xd5, 0xd6, 0x24, 0x25, 0x2d, 0x2e, 0xd7, 0xd8,
+  0xa7, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+
+  0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+  0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+  0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+  0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
+};
+
+/*
+ * NAME:	data->getb()
+ * DESCRIPTION:	marshal 1 byte into local host format
+ */
+char d_getb(unsigned char *ptr)
+{
+  return (char) ptr[0];
+}
+
+/*
+ * NAME:	data->getw()
+ * DESCRIPTION:	marshal 2 bytes into local host format
+ */
+short d_getw(unsigned char *ptr)
+{
+  return (short)
+    ((ptr[0] << 8) |
+     (ptr[1] << 0));
+}
+
+/*
+ * NAME:	data->getl()
+ * DESCRIPTION:	marshal 4 bytes into local host format
+ */
+long d_getl(unsigned char *ptr)
+{
+  return (long)
+    ((ptr[0] << 24) |
+     (ptr[1] << 16) |
+     (ptr[2] <<  8) |
+     (ptr[3] <<  0));
+}
+
+/*
+ * NAME:	data->putb()
+ * DESCRIPTION:	marshal 1 byte out to Macintosh (big-endian) format
+ */
+#ifdef	PROTOTYPES
+void d_putb(unsigned char *ptr, char data)
+#else
+void d_putb(unsigned char *ptr, char data)
+#endif
+{
+  ptr[0] = (unsigned char) data;
+}
+
+/*
+ * NAME:	data->putw()
+ * DESCRIPTION:	marshal 2 bytes out to Macintosh (big-endian) format
+ */
+#ifdef	PROTOTYPES
+void d_putw(unsigned char *ptr, short data)
+#else
+void d_putw(unsigned char *ptr, short data)
+#endif
+{
+  ptr[0] = ((unsigned) data & 0xff00) >> 8;
+  ptr[1] = ((unsigned) data & 0x00ff) >> 0;
+}
+
+/*
+ * NAME:	data->putl()
+ * DESCRIPTION:	marshal 4 bytes out to Macintosh (big-endian) format
+ */
+void d_putl(unsigned char *ptr, long data)
+{
+  ptr[0] = ((unsigned long) data & 0xff000000) >> 24;
+  ptr[1] = ((unsigned long) data & 0x00ff0000) >> 16;
+  ptr[2] = ((unsigned long) data & 0x0000ff00) >>  8;
+  ptr[3] = ((unsigned long) data & 0x000000ff) >>  0;
+}
+
+/*
+ * NAME:	data->fetchb()
+ * DESCRIPTION:	incrementally retrieve a byte of data
+ */
+void d_fetchb(unsigned char **ptr, char *dest)
+{
+  *dest = d_getb(*ptr);
+  *ptr += 1;
+}
+
+/*
+ * NAME:	data->fetchw()
+ * DESCRIPTION:	incrementally retrieve a word of data
+ */
+void d_fetchw(unsigned char **ptr, short *dest)
+{
+  *dest = d_getw(*ptr);
+  *ptr += 2;
+}
+
+/*
+ * NAME:	data->fetchl()
+ * DESCRIPTION:	incrementally retrieve a long word of data
+ */
+void d_fetchl(unsigned char **ptr, long *dest)
+{
+  *dest = d_getl(*ptr);
+  *ptr += 4;
+}
+
+/*
+ * NAME:	data->fetchs()
+ * DESCRIPTION:	incrementally retrieve a string
+ */
+void d_fetchs(unsigned char **ptr, char *dest, int size)
+{
+  int len;
+  char blen;
+
+  d_fetchb(ptr, &blen);
+  len = blen;
+
+  if (len > 0 && len < size)
+    memcpy(dest, *ptr, len);
+  else
+    len = 0;
+
+  dest[len] = 0;
+
+  *ptr += size - 1;
+}
+
+/*
+ * NAME:	data->storeb()
+ * DESCRIPTION:	incrementally store a byte of data
+ */
+#ifdef	PROTOTYPES
+void d_storeb(unsigned char **ptr, char data)
+#else
+void d_storeb(unsigned char **ptr, char data)
+#endif
+{
+  d_putb(*ptr, data);
+  *ptr += 1;
+}
+
+/*
+ * NAME:	data->storew()
+ * DESCRIPTION:	incrementally store a word of data
+ */
+#ifdef	PROTOTYPES
+void d_storew(unsigned char **ptr, short data)
+#else
+void d_storew(unsigned char **ptr, short data)
+#endif
+{
+  d_putw(*ptr, data);
+  *ptr += 2;
+}
+
+/*
+ * NAME:	data->storel()
+ * DESCRIPTION:	incrementally store a long word of data
+ */
+void d_storel(unsigned char **ptr, long data)
+{
+  d_putl(*ptr, data);
+  *ptr += 4;
+}
+
+/*
+ * NAME:	data->stores()
+ * DESCRIPTION:	incrementally store a string
+ */
+void d_stores(unsigned char **ptr, char *src, int size)
+{
+  int len;
+
+  len = strlen(src);
+  if (len > --size)
+    len = 0;
+
+  d_storeb(ptr, (unsigned char) len);
+
+  memcpy(*ptr, src, len);
+  memset(*ptr + len, 0, size - len);
+
+  *ptr += size;
+}
+
+/*
+ * NAME:	calctzdiff()
+ * DESCRIPTION:	calculate the timezone difference between local time and UTC
+ */
+static void calctzdiff()
+{
+  time_t t;
+  int isdst;
+  struct tm tm, *tmp;
+
+  time(&t);
+  isdst = localtime(&t)->tm_isdst;
+
+  tmp = gmtime(&t);
+  if (tmp)
+    {
+      tm = *tmp;
+      tm.tm_isdst = isdst;
+
+      tzdiff = t - mktime(&tm);
+    }
+  else
+    tzdiff = 0;
+}
+
+/*
+ * NAME:	data->tomtime()
+ * DESCRIPTION:	convert UNIX time to Macintosh time
+ */
+unsigned long d_tomtime(unsigned long secs)
+{
+  time_t utime = secs;
+
+  if (tzdiff == TZNONE)
+    calctzdiff();
+
+  return utime + tzdiff + MUTDIFF;
+}
+
+/*
+ * NAME:	data->toutime()
+ * DESCRIPTION:	convert Macintosh time to UNIX time
+ */
+unsigned long d_toutime(unsigned long secs)
+{
+  time_t utime = secs;
+
+  if (tzdiff == TZNONE)
+    calctzdiff();
+
+  return utime - MUTDIFF - tzdiff;
+}
+
+#ifdef APPLE_HYB
+/*
+ * NAME:	data->dtoutime()
+ * DESCRIPTION:	convert Apple Double v2 time to UNIX time
+ */
+unsigned long d_dtoutime(long secs)
+{
+  time_t utime = secs;
+
+  if (tzdiff == TZNONE)
+    calctzdiff();
+
+  return utime + DUTDIFF - tzdiff;
+}
+#endif /* APPLE_HYB */
+
+/*
+ * NAME:	data->relstring()
+ * DESCRIPTION:	compare two strings as per MacOS for HFS
+ */
+int d_relstring(char *str1, char *str2)
+{
+  int diff;
+
+  while (*str1 && *str2)
+    {
+      diff = hfs_charorder[(unsigned char) *str1] -
+	     hfs_charorder[(unsigned char) *str2];
+
+      if (diff)
+	return diff;
+
+      ++str1, ++str2;
+    }
+
+  if (! *str1 && *str2)
+    return -1;
+  else if (*str1 && ! *str2)
+    return 1;
+
+  return 0;
+}