Support lzop options for writing.

diff --git a/libarchive/archive_write_add_filter_lzop.c b/libarchive/archive_write_add_filter_lzop.c
index 59ab993150dd1ed50ced2c4ebbcb7d1502bb306d..06af6d71aca342448ba11655c8a921a8443a2365 100644 (file)
--- a/libarchive/archive_write_add_filter_lzop.c
+++ b/libarchive/archive_write_add_filter_lzop.c
@@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$");
 
 struct write_lzop {
        struct archive_write_program_data *pdata;
+       int compression_level;
 };
 
 static int archive_write_lzop_open(struct archive_write_filter *);
@@ -88,9 +89,15 @@ static int
 archive_write_lzop_options(struct archive_write_filter *f, const char *key,
     const char *value)
 {
-       (void)f; /* UNUSED */
-       (void)key; /* UNUSED */
-       (void)value; /* UNUSED */
+       struct write_lzop *data = (struct write_lzop *)f->data;
+
+       if (strcmp(key, "compression-level") == 0) {
+               if (value == NULL || !(value[0] >= '1' && value[0] <= '9') ||
+                   value[1] != '\0')
+                       return (ARCHIVE_WARN);
+               data->compression_level = value[0] - '0';
+               return (ARCHIVE_OK);
+       }
        /* Note: The "warn" return is just to inform the options
         * supervisor that we didn't handle it.  It will generate
         * a suitable error if no one used this option. */
@@ -109,6 +116,16 @@ archive_write_lzop_open(struct archive_write_filter *f)
        r = __archive_write_program_add_arg(data->pdata, "lzop");
        if (r != ARCHIVE_OK)
                goto memerr;
+       /* Specify compression level. */
+       if (data->compression_level > 0) {
+               char level[3];
+               level[0] = '-';
+               level[1] = '0' + data->compression_level;
+               level[2] = '\0';
+               r = __archive_write_program_add_arg(data->pdata, level);
+               if (r != ARCHIVE_OK)
+                       goto memerr;
+       }
        r = __archive_write_program_open(f, data->pdata);
        return (r);
 memerr: