libzstd disable support added.

meson.build

@@ -159,9 +159,14 @@ yaml_dep = dependency('yaml-0.1')
 xmlb_dep = dependency('xmlb', version: '>= 0.3.14',
                       fallback: ['libxmlb', 'libxmlb_dep'],
                       default_options: ['gtkdoc=false', 'introspection=false'])
-zstd_dep = dependency('libzstd')
 libsystemd_dep = dependency('libsystemd', required: get_option('systemd'))
 
+if get_option('zstd')
+    zstd_dep = dependency('libzstd', required: get_option('zstd'))
+else
+    add_project_arguments('-DNO_ZSTD', language: 'c')
+endif
+
 if get_option ('gir')
     # ensure we have a version of GIR that isn't broken with Meson
     # (prior versions failed when any non-GObject library was linked)

meson_options.txt

@@ -23,6 +23,11 @@ option('qt5',
        value : false,
        description: 'Build libappstream-qt5 for Qt5'
 )
+option('zstd',
+       type : 'boolean',
+       value : true,
+       description: 'Zstd support'
+)
 option('compose',
        type : 'boolean',
        value : false,

src/as-metadata.c

@@ -45,7 +45,9 @@
 #include "as-release-list-private.h"
 #include "as-context-private.h"
 #include "as-desktop-entry.h"
+#ifndef NO_ZSTD
 #include "as-zstd-decompressor.h"
+#endif
 
 #include "as-xml.h"
 #include "as-yaml.h"
@@ -750,14 +752,18 @@ as_metadata_parse_file (AsMetadata *metad, GFile *file, AsFormatKind format, GEr
 		g_propagate_error (error, tmp_error);
 		return FALSE;
 	}
-
+	#ifndef NO_ZSTD
 	if (as_str_equal0 (content_type, "application/zstd")) {
 		/* decompress the Zstd stream */
 		conv = G_CONVERTER (as_zstd_decompressor_new ());
 		stream_data = g_converter_input_stream_new (file_stream, conv);
 
 	} else if (as_str_equal0 (content_type, "application/gzip") ||
 		   as_str_equal0 (content_type, "application/x-gzip")) {
+	#else
+	if (as_str_equal0 (content_type, "application/gzip") ||
+		   as_str_equal0 (content_type, "application/x-gzip")) {
+	#endif
 		/* decompress the GZip stream */
 		conv = G_CONVERTER (g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP));
 		stream_data = g_converter_input_stream_new (file_stream, conv);

src/as-utils.c

@@ -47,8 +47,9 @@
 #include "as-metadata.h"
 #include "as-component-private.h"
 #include "as-desktop-env-data.h"
+#ifndef NO_ZSTD
 #include "as-zstd-decompressor.h"
-
+#endif
 /**
  * SECTION:as-utils
  * @short_description: Helper functions that are used inside libappstream
@@ -2260,12 +2261,15 @@ as_utils_extract_tarball (const gchar *filename, const gchar *target_dir, GError
 	if (tarz_stream == NULL)
 		return FALSE;
 
+	#ifndef NO_ZSTD
 	if (g_str_has_suffix (filename, "tar.zst")) {
 		/* decompress the Zstd stream */
 		conv = G_CONVERTER (as_zstd_decompressor_new ());
 		tar_stream = g_converter_input_stream_new (tarz_stream, conv);
-
 	} else if (g_str_has_suffix (filename, "tar.gz")) {
+	#else
+	if (g_str_has_suffix (filename, "tar.gz")) {
+	#endif
 		/* decompress the GZip stream */
 		conv = G_CONVERTER (g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP));
 		tar_stream = g_converter_input_stream_new (tarz_stream, conv);

src/as-validator.c

@@ -50,7 +50,9 @@
 #include "as-yaml.h"
 #include "as-desktop-entry.h"
 #include "as-content-rating-private.h"
+#ifndef NO_ZSTD
 #include "as-zstd-decompressor.h"
+#endif
 
 typedef struct {
 	GHashTable *issue_tags; /* of utf8:AsValidatorIssueTag */
@@ -3531,14 +3533,18 @@ as_validator_validate_file (AsValidator *validator, GFile *metadata_file)
 	}
 	if (file_stream == NULL)
 		return FALSE;
-
+	#ifndef NO_ZSTD
 	if (as_str_equal0 (content_type, "application/zstd")) {
 		/* decompress the Zstd stream */
 		conv = G_CONVERTER (as_zstd_decompressor_new ());
 		stream_data = g_converter_input_stream_new (file_stream, conv);
 
 	} else if (as_str_equal0 (content_type, "application/gzip") ||
 		   as_str_equal0 (content_type, "application/x-gzip")) {
+	#else 
+	if (as_str_equal0 (content_type, "application/gzip") ||
+		   as_str_equal0 (content_type, "application/x-gzip")) {
+	#endif
 		/* decompress the GZip stream */
 		conv = G_CONVERTER (g_zlib_decompressor_new (G_ZLIB_COMPRESSOR_FORMAT_GZIP));
 		stream_data = g_converter_input_stream_new (file_stream, conv);

src/meson.build

@@ -16,7 +16,6 @@ aslib_src = [
     'as-tag.c',
     'as-xml.c',
     'as-yaml.c',
-    'as-zstd-decompressor.c',
     # (mostly) public
     'as-agreement.c',
     'as-agreement-section.c',
@@ -137,7 +136,6 @@ aslib_priv_headers = [
     'as-validator-issue-tag.h',
     'as-xml.h',
     'as-yaml.h',
-    'as-zstd-decompressor.h',
 ]
 
 as_version_h = configure_file(
@@ -190,12 +188,19 @@ aslib_deps = [glib_dep,
               xmlb_dep,
               xml2_dep,
               yaml_dep,
-              libsystemd_dep,
-              zstd_dep]
+              libsystemd_dep]
 if get_option ('stemming')
     aslib_deps += [stemmer_lib]
 endif
 
+if get_option ('zstd')
+    aslib_deps += [zstd_dep]
+    aslib_src += ['as-zstd-decompressor.c']
+    aslib_priv_headers += ['as-zstd-decompressor.h']
+endif
+
+
+
 appstream_lib = library ('appstream',
     [aslib_src,
      aslib_pub_headers,