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, 314 insertions, 0 deletions

diff --git a/Utilities/cmlibarchive/contrib/shar/shar.c b/Utilities/cmlibarchive/contrib/shar/shar.c
new file mode 100644
index 0000000..91ab2b5
--- /dev/null
+++ b/Utilities/cmlibarchive/contrib/shar/shar.c
@@ -0,0 +1,314 @@
+/*-
+ * Copyright (c) 2008 Jaakko Heinonen
+ * 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
+ *    in this position and unchanged.
+ * 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 <sys/cdefs.h>
+#ifdef __FBSDID
+__FBSDID("$FreeBSD$");
+#endif
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <archive.h>
+#include <archive_entry.h>
+#include <assert.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "tree.h"
+
+/* command line options */
+static int  b_opt;  /* use alternative shar binary format */
+static int  r_opt;  /* recurse into subdirectories */
+static char *o_arg; /* output file name */
+
+static void
+usage(void)
+{
+    fprintf(stderr, "Usage: shar [-br] [-o filename] file ...\n");
+    exit(EX_USAGE);
+}
+
+/*
+ * Initialize archive structure and create a shar archive.
+ */
+static struct archive *
+shar_create(void)
+{
+    struct archive *a;
+
+    if ((a = archive_write_new()) == NULL)
+        errx(EXIT_FAILURE, "%s", archive_error_string(a));
+
+    if (b_opt)
+        archive_write_set_format_shar_dump(a);
+    else
+        archive_write_set_format_shar(a);
+    archive_write_set_compression_none(a);
+
+    if (archive_write_open_filename(a, o_arg) != ARCHIVE_OK)
+        errx(EX_CANTCREAT, "%s", archive_error_string(a));
+
+    return (a);
+}
+
+/* buffer for file data */
+static char buffer[32768];
+
+/*
+ * Write file data to an archive entry.
+ */
+static int
+shar_write_entry_data(struct archive *a, const int fd)
+{
+    ssize_t bytes_read, bytes_written;
+
+    assert(a != NULL);
+    assert(fd >= 0);
+
+    bytes_read = read(fd, buffer, sizeof(buffer));
+    while (bytes_read != 0) {
+        if (bytes_read < 0) {
+            archive_set_error(a, errno, "Read failed");
+            return (ARCHIVE_WARN);
+        }
+        bytes_written = archive_write_data(a, buffer, bytes_read);
+        if (bytes_written < 0)
+            return (ARCHIVE_WARN);
+        bytes_read = read(fd, buffer, sizeof(buffer));
+    }
+
+    return (ARCHIVE_OK);
+}
+
+/*
+ * Write a file to the archive. We have special handling for symbolic links.
+ */
+static int
+shar_write_entry(struct archive *a, const char *pathname, const char *accpath,
+    const struct stat *st)
+{
+    struct archive_entry *entry;
+    int fd = -1;
+    int ret = ARCHIVE_OK;
+
+    assert(a != NULL);
+    assert(pathname != NULL);
+    assert(accpath != NULL);
+    assert(st != NULL);
+
+    entry = archive_entry_new();
+
+    if (S_ISREG(st->st_mode) && st->st_size > 0) {
+        /* regular file */
+        if ((fd = open(accpath, O_RDONLY)) == -1) {
+            warn("%s", accpath);
+            ret = ARCHIVE_WARN;
+            goto out;
+        }
+    } else if (S_ISLNK(st->st_mode)) {
+        /* symbolic link */
+        char lnkbuff[PATH_MAX + 1];
+        int lnklen;
+        if ((lnklen = readlink(accpath, lnkbuff, PATH_MAX)) == -1) {
+            warn("%s", accpath);
+            ret = ARCHIVE_WARN;
+            goto out;
+        }
+        lnkbuff[lnklen] = '\0';
+        archive_entry_set_symlink(entry, lnkbuff);
+    }
+    archive_entry_copy_stat(entry, st);
+    archive_entry_set_pathname(entry, pathname);
+    if (!S_ISREG(st->st_mode) || st->st_size == 0)
+        archive_entry_set_size(entry, 0);
+    if (archive_write_header(a, entry) != ARCHIVE_OK) {
+        warnx("%s: %s", pathname, archive_error_string(a));
+        ret = ARCHIVE_WARN;
+        goto out;
+    }
+    if (fd >= 0) {
+        if ((ret = shar_write_entry_data(a, fd)) != ARCHIVE_OK)
+            warnx("%s: %s", accpath, archive_error_string(a));
+    }
+out:
+    archive_entry_free(entry);
+    if (fd >= 0)
+        close(fd);
+
+    return (ret);
+}
+
+/*
+ * Write singe path to the archive. The path can be a regular file, directory
+ * or device. Symbolic links are followed.
+ */
+static int
+shar_write_path(struct archive *a, const char *pathname)
+{
+    struct stat st;
+
+    assert(a != NULL);
+    assert(pathname != NULL);
+
+    if ((stat(pathname, &st)) == -1) {
+        warn("%s", pathname);
+        return (ARCHIVE_WARN);
+    }
+
+    return (shar_write_entry(a, pathname, pathname, &st));
+}
+
+/*
+ * Write tree to the archive. If pathname is a symbolic link it will be
+ * followed. Other symbolic links are stored as such to the archive.
+ */
+static int
+shar_write_tree(struct archive *a, const char *pathname)
+{
+    struct tree *t;
+    const struct stat *lst, *st;
+    int error = 0;
+    int tree_ret;
+    int first;
+
+    assert(a != NULL);
+    assert(pathname != NULL);
+
+    t = tree_open(pathname);
+    for (first = 1; (tree_ret = tree_next(t)); first = 0) {
+        if (tree_ret == TREE_ERROR_DIR) {
+            warnx("%s: %s", tree_current_path(t),
+                strerror(tree_errno(t)));
+            error = 1;
+            continue;
+        } else if (tree_ret != TREE_REGULAR)
+            continue;
+        if ((lst = tree_current_lstat(t)) == NULL) {
+            warn("%s", tree_current_path(t));
+            error = 1;
+            continue;
+        }
+        /*
+         * If the symlink was given on command line then
+         * follow it rather than write it as symlink.
+         */
+        if (first && S_ISLNK(lst->st_mode)) {
+            if ((st = tree_current_stat(t)) == NULL) {
+                warn("%s", tree_current_path(t));
+                error = 1;
+                continue;
+            }
+        } else
+            st = lst;
+
+        if (shar_write_entry(a, tree_current_path(t),
+            tree_current_access_path(t), st) != ARCHIVE_OK)
+            error = 1;
+
+        tree_descend(t);
+    }
+
+    tree_close(t);
+
+    return ((error != 0) ? ARCHIVE_WARN : ARCHIVE_OK);
+}
+
+/*
+ * Create a shar archive and write files/trees into it.
+ */
+static int
+shar_write(char **fn, size_t nfn)
+{
+    struct archive *a;
+    size_t i;
+    int error = 0;
+
+    assert(fn != NULL);
+    assert(nfn > 0);
+
+    a = shar_create();
+
+    for (i = 0; i < nfn; i++) {
+        if (r_opt) {
+            if (shar_write_tree(a, fn[i]) !=  ARCHIVE_OK)
+                error = 1;
+        } else {
+            if (shar_write_path(a, fn[i]) != ARCHIVE_OK)
+                error = 1;
+        }
+    }
+
+    if (archive_write_finish(a) != ARCHIVE_OK)
+        errx(EXIT_FAILURE, "%s", archive_error_string(a));
+
+    if (error != 0)
+        warnx("Error exit delayed from previous errors.");
+
+    return (error);
+}
+
+int
+main(int argc, char **argv)
+{
+    int opt;
+
+    while ((opt = getopt(argc, argv, "bro:")) != -1) {
+        switch (opt) {
+        case 'b':
+            b_opt = 1;
+            break;
+        case 'o':
+            o_arg = optarg;
+            break;
+        case 'r':
+            r_opt = 1;
+            break;
+        default:
+            usage();
+            /* NOTREACHED */
+        }
+    }
+    argc -= optind;
+    argv += optind;
+
+    if(argc < 1)
+        usage();
+
+    if (shar_write(argv, argc) != 0)
+        exit(EXIT_FAILURE);
+    else
+        exit(EXIT_SUCCESS);
+    /* NOTREACHED */
+}
+