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authorkientzle <kientzle@FreeBSD.org>2005-06-04 22:19:25 +0000
committerkientzle <kientzle@FreeBSD.org>2005-06-04 22:19:25 +0000
commit7ed2aa04eb87e659ee6d136737b62df2394af5c3 (patch)
treed4653055375754287d8b77ed38043a5893580300 /lib
parentbbde8d81978bf136ee11066b3a217c2237566ce6 (diff)
downloadFreeBSD-src-7ed2aa04eb87e659ee6d136737b62df2394af5c3.zip
FreeBSD-src-7ed2aa04eb87e659ee6d136737b62df2394af5c3.tar.gz
Fix one error in the example usage of the archive_write API and fill
in a few missing details. The example code here is now a complete, functioning example program.
Diffstat (limited to 'lib')
-rw-r--r--lib/libarchive/archive_write.379
1 files changed, 52 insertions, 27 deletions
diff --git a/lib/libarchive/archive_write.3 b/lib/libarchive/archive_write.3
index 73b433b..2086424 100644
--- a/lib/libarchive/archive_write.3
+++ b/lib/libarchive/archive_write.3
@@ -272,8 +272,50 @@ and
.Xr close 2
system calls.
.Bd -literal -offset indent
+#include <sys/stat.h>
+#include <archive.h>
+#include <archive_entry.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+struct mydata {
+ const char *name;
+ int fd;
+};
+
+int
+myopen(struct archive *a, void *client_data)
+{
+ struct mydata *mydata = client_data;
+
+ mydata->fd = open(mydata->name, O_WRONLY | O_CREAT, 0644);
+ if (mydata->fd >= 0)
+ return (ARCHIVE_OK);
+ else
+ return (ARCHIVE_FATAL);
+}
+
+ssize_t
+mywrite(struct archive *a, void *client_data, void *buff, size_t n)
+{
+ struct mydata *mydata = client_data;
+
+ return (write(mydata->fd, buff, n));
+}
+
+int
+myclose(struct archive *a, void *client_data)
+{
+ struct mydata *mydata = client_data;
+
+ if (mydata->fd > 0)
+ close(mydata->fd);
+ return (0);
+}
+
void
-write_archive(const char **filename)
+write_archive(const char *outname, const char **filename)
{
struct mydata *mydata = malloc(sizeof(struct mydata));
struct archive *a;
@@ -281,9 +323,10 @@ write_archive(const char **filename)
struct stat st;
char buff[8192];
int len;
+ int fd;
a = archive_write_new();
- mydata->name = name;
+ mydata->name = outname;
archive_write_set_compression_gzip(a);
archive_write_set_format_ustar(a);
archive_write_open(a, mydata, myopen, mywrite, myclose);
@@ -295,7 +338,7 @@ write_archive(const char **filename)
archive_write_header(a, entry);
fd = open(*filename, O_RDONLY);
len = read(fd, buff, sizeof(buff));
- while ( len >= 0 ) {
+ while ( len > 0 ) {
archive_write_data(a, buff, len);
len = read(fd, buff, sizeof(buff));
}
@@ -305,31 +348,13 @@ write_archive(const char **filename)
archive_write_finish(a);
}
-int
-myopen(struct archive *a, void *client_data)
+int main(int argc, const char **argv)
{
- struct mydata *mydata = client_data;
-
- mydata->fd = open(mydata->name, O_WRONLY | O_CREAT, 0644);
- return (mydata->fd >= 0);
-}
-
-ssize_t
-mywrite(struct archive *a, void *client_data, void *buff, size_t n)
-{
- struct mydata *mydata = client_data;
-
- return (write(mydata->fd, buff, n));
-}
-
-int
-myclose(struct archive *a, void *client_data)
-{
- struct mydata *mydata = client_data;
-
- if (mydata->fd > 0)
- close(mydata->fd);
- return (0);
+ const char *outname;
+ argv++;
+ outname = argv++;
+ write_archive(outname, argv);
+ return 0;
}
.Ed
.Sh RETURN VALUES
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