Switch to using libarchive from libtar for cpack and cmake -E tar

This allows for a built in bzip and zip capability, so external tools
will not be needed for these packagers.  The cmake -E tar xf should be
able to handle all compression types now as well.

1 files changed, 270 insertions, 0 deletions

diff --git a/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c b/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c
new file mode 100644
index 0000000..bb681e5
--- /dev/null
+++ b/Utilities/cmlibarchive/libarchive/archive_read_open_filename.c
@@ -0,0 +1,270 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "archive_platform.h"
+__FBSDID("$FreeBSD: src/lib/libarchive/archive_read_open_filename.c,v 1.21 2008/02/19 06:10:48 kientzle Exp $");
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "archive.h"
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+struct read_file_data {
+    int  fd;
+    size_t   block_size;
+    void    *buffer;
+    mode_t   st_mode;  /* Mode bits for opened file. */
+    char     can_skip; /* This file supports skipping. */
+    char     filename[1]; /* Must be last! */
+};
+
+static int  file_close(struct archive *, void *);
+static ssize_t  file_read(struct archive *, void *, const void **buff);
+#if ARCHIVE_API_VERSION < 2
+static ssize_t  file_skip(struct archive *, void *, size_t request);
+#else
+static off_t    file_skip(struct archive *, void *, off_t request);
+#endif
+
+int
+archive_read_open_file(struct archive *a, const char *filename,
+    size_t block_size)
+{
+    return (archive_read_open_filename(a, filename, block_size));
+}
+
+int
+archive_read_open_filename(struct archive *a, const char *filename,
+    size_t block_size)
+{
+    struct stat st;
+    struct read_file_data *mine;
+    void *b;
+    int fd;
+
+    archive_clear_error(a);
+    if (filename == NULL || filename[0] == '\0') {
+        /* We used to invoke archive_read_open_fd(a,0,block_size)
+         * here, but that doesn't (and shouldn't) handle the
+         * end-of-file flush when reading stdout from a pipe.
+         * Basically, read_open_fd() is intended for folks who
+         * are willing to handle such details themselves.  This
+         * API is intended to be a little smarter for folks who
+         * want easy handling of the common case.
+         */
+        filename = ""; /* Normalize NULL to "" */
+        fd = 0;
+#if defined(__CYGWIN__)
+        setmode(0, O_BINARY);
+#elif defined(_WIN32)
+        _setmode(0, _O_BINARY);
+#endif
+    } else {
+        fd = open(filename, O_RDONLY | O_BINARY);
+        if (fd < 0) {
+            archive_set_error(a, errno,
+                "Failed to open '%s'", filename);
+            return (ARCHIVE_FATAL);
+        }
+    }
+    if (fstat(fd, &st) != 0) {
+        archive_set_error(a, errno, "Can't stat '%s'", filename);
+        return (ARCHIVE_FATAL);
+    }
+
+    mine = (struct read_file_data *)calloc(1,
+        sizeof(*mine) + strlen(filename));
+    b = malloc(block_size);
+    if (mine == NULL || b == NULL) {
+        archive_set_error(a, ENOMEM, "No memory");
+        free(mine);
+        free(b);
+        return (ARCHIVE_FATAL);
+    }
+    strcpy(mine->filename, filename);
+    mine->block_size = block_size;
+    mine->buffer = b;
+    mine->fd = fd;
+    /* Remember mode so close can decide whether to flush. */
+    mine->st_mode = st.st_mode;
+    /* If we're reading a file from disk, ensure that we don't
+       overwrite it with an extracted file. */
+    if (S_ISREG(st.st_mode)) {
+        archive_read_extract_set_skip_file(a, st.st_dev, st.st_ino);
+        /*
+         * Enabling skip here is a performance optimization
+         * for anything that supports lseek().  On FreeBSD
+         * (and probably many other systems), only regular
+         * files and raw disk devices support lseek() (on
+         * other input types, lseek() returns success but
+         * doesn't actually change the file pointer, which
+         * just completely screws up the position-tracking
+         * logic).  In addition, I've yet to find a portable
+         * way to determine if a device is a raw disk device.
+         * So I don't see a way to do much better than to only
+         * enable this optimization for regular files.
+         */
+        mine->can_skip = 1;
+    }
+    return (archive_read_open2(a, mine,
+        NULL, file_read, file_skip, file_close));
+}
+
+static ssize_t
+file_read(struct archive *a, void *client_data, const void **buff)
+{
+    struct read_file_data *mine = (struct read_file_data *)client_data;
+    ssize_t bytes_read;
+
+    *buff = mine->buffer;
+    bytes_read = read(mine->fd, mine->buffer, mine->block_size);
+    if (bytes_read < 0) {
+        if (mine->filename[0] == '\0')
+            archive_set_error(a, errno, "Error reading stdin");
+        else
+            archive_set_error(a, errno, "Error reading '%s'",
+                mine->filename);
+    }
+    return (bytes_read);
+}
+
+#if ARCHIVE_API_VERSION < 2
+static ssize_t
+file_skip(struct archive *a, void *client_data, size_t request)
+#else
+static off_t
+file_skip(struct archive *a, void *client_data, off_t request)
+#endif
+{
+    struct read_file_data *mine = (struct read_file_data *)client_data;
+    off_t old_offset, new_offset;
+
+    if (!mine->can_skip) /* We can't skip, so ... */
+        return (0); /* ... skip zero bytes. */
+
+    /* Reduce request to the next smallest multiple of block_size */
+    request = (request / mine->block_size) * mine->block_size;
+    if (request == 0)
+        return (0);
+
+    /*
+     * Hurray for lazy evaluation: if the first lseek fails, the second
+     * one will not be executed.
+     */
+    if (((old_offset = lseek(mine->fd, 0, SEEK_CUR)) < 0) ||
+        ((new_offset = lseek(mine->fd, request, SEEK_CUR)) < 0))
+    {
+        /* If skip failed once, it will probably fail again. */
+        mine->can_skip = 0;
+
+        if (errno == ESPIPE)
+        {
+            /*
+             * Failure to lseek() can be caused by the file
+             * descriptor pointing to a pipe, socket or FIFO.
+             * Return 0 here, so the compression layer will use
+             * read()s instead to advance the file descriptor.
+             * It's slower of course, but works as well.
+             */
+            return (0);
+        }
+        /*
+         * There's been an error other than ESPIPE. This is most
+         * likely caused by a programmer error (too large request)
+         * or a corrupted archive file.
+         */
+        if (mine->filename[0] == '\0')
+            /*
+             * Should never get here, since lseek() on stdin ought
+             * to return an ESPIPE error.
+             */
+            archive_set_error(a, errno, "Error seeking in stdin");
+        else
+            archive_set_error(a, errno, "Error seeking in '%s'",
+                mine->filename);
+        return (-1);
+    }
+    return (new_offset - old_offset);
+}
+
+static int
+file_close(struct archive *a, void *client_data)
+{
+    struct read_file_data *mine = (struct read_file_data *)client_data;
+
+    (void)a; /* UNUSED */
+
+    /* Only flush and close if open succeeded. */
+    if (mine->fd >= 0) {
+        /*
+         * Sometimes, we should flush the input before closing.
+         *   Regular files: faster to just close without flush.
+         *   Devices: must not flush (user might need to
+         *      read the "next" item on a non-rewind device).
+         *   Pipes and sockets:  must flush (otherwise, the
+         *      program feeding the pipe or socket may complain).
+         * Here, I flush everything except for regular files and
+         * device nodes.
+         */
+        if (!S_ISREG(mine->st_mode)
+            && !S_ISCHR(mine->st_mode)
+            && !S_ISBLK(mine->st_mode)) {
+            ssize_t bytesRead;
+            do {
+                bytesRead = read(mine->fd, mine->buffer,
+                    mine->block_size);
+            } while (bytesRead > 0);
+        }
+        /* If a named file was opened, then it needs to be closed. */
+        if (mine->filename[0] != '\0')
+            close(mine->fd);
+    }
+    free(mine->buffer);
+    free(mine);
+    return (ARCHIVE_OK);
+}