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Add GZIP header processing to GZlibCompressor/GZlibDecompressor
Add GZlibCompressor:file-info property. If it contains a non-NULL GFileInfo, and the compressor is in GZIP mode, the filename and modification time from the file info are written to the GZIP header in the output data. Add GZlibDeompressor:file-info property. If the decompressor is in GZIP mode, and the GZIP data contains a GZIP header, the filename and modification time are read from it, stored in a GFileInfo, and the file-info property is notified. Bug #617691.
This commit is contained in:
Christian Persch
parent
b196cd7447
commit
cae86073ea
@ -2054,6 +2054,8 @@ g_converter_output_stream_get_type
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GZlibCompressor
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GZlibCompressorFormat
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g_zlib_compressor_new
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g_zlib_compressor_get_file_info
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g_zlib_compressor_set_file_info
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<SUBSECTION Standard>
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GZlibCompressorClass
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G_TYPE_ZLIB_COMPRESSOR
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@ -2071,6 +2073,7 @@ g_zlib_compressor_get_type
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<TITLE>GZlibDecompressor</TITLE>
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GZlibDecompressor
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g_zlib_decompressor_new
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g_zlib_decompressor_get_file_info
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<SUBSECTION Standard>
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GZlibDecompressorClass
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G_TYPE_ZLIB_DECOMPRESSOR
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@ -1423,6 +1423,8 @@ g_unix_fd_list_steal_fds
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#if IN_FILE(__G_ZLIB_COMPRESSOR_C__)
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g_zlib_compressor_get_type G_GNUC_CONST
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g_zlib_compressor_new
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g_zlib_compressor_get_file_info
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g_zlib_compressor_set_file_info
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#endif
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#endif
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@ -1430,6 +1432,7 @@ g_zlib_compressor_new
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#if IN_FILE(__G_ZLIB_DECOMPRESSOR_C__)
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g_zlib_decompressor_get_type G_GNUC_CONST
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g_zlib_decompressor_new
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g_zlib_decompressor_get_file_info
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#endif
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#endif
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@ -28,6 +28,7 @@
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#include <zlib.h>
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#include <string.h>
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#include "gfileinfo.h"
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#include "gioerror.h"
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#include "gioenums.h"
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#include "gioenumtypes.h"
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@ -37,7 +38,8 @@
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enum {
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PROP_0,
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PROP_FORMAT,
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PROP_LEVEL
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PROP_LEVEL,
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PROP_FILE_INFO
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};
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/**
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@ -63,8 +65,34 @@ struct _GZlibCompressor
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GZlibCompressorFormat format;
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int level;
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z_stream zstream;
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gz_header gzheader;
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GFileInfo *file_info;
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};
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static void
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g_zlib_compressor_set_gzheader (GZlibCompressor *compressor)
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{
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const gchar *filename;
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if (compressor->format != G_ZLIB_COMPRESSOR_FORMAT_GZIP ||
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compressor->file_info == NULL)
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return;
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memset (&compressor->gzheader, 0, sizeof (gz_header));
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compressor->gzheader.os = 0x03; /* Unix */
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filename = g_file_info_get_name (compressor->file_info);
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compressor->gzheader.name = (Bytef *) filename;
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compressor->gzheader.name_max = filename ? strlen (filename) + 1 : 0;
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compressor->gzheader.time =
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(uLong) g_file_info_get_attribute_uint64 (compressor->file_info,
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G_FILE_ATTRIBUTE_TIME_MODIFIED);
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if (deflateSetHeader (&compressor->zstream, &compressor->gzheader) != Z_OK)
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g_warning ("unexpected zlib error: %s\n", compressor->zstream.msg);
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}
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G_DEFINE_TYPE_WITH_CODE (GZlibCompressor, g_zlib_compressor, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_CONVERTER,
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g_zlib_compressor_iface_init))
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@ -78,6 +106,9 @@ g_zlib_compressor_finalize (GObject *object)
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deflateEnd (&compressor->zstream);
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if (compressor->file_info)
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g_object_unref (compressor->file_info);
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G_OBJECT_CLASS (g_zlib_compressor_parent_class)->finalize (object);
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}
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@ -102,6 +133,10 @@ g_zlib_compressor_set_property (GObject *object,
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compressor->level = g_value_get_int (value);
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break;
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case PROP_FILE_INFO:
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g_zlib_compressor_set_file_info (compressor, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -129,6 +164,10 @@ g_zlib_compressor_get_property (GObject *object,
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g_value_set_int (value, compressor->level);
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break;
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case PROP_FILE_INFO:
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g_value_set_object (value, compressor->file_info);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -172,6 +211,8 @@ g_zlib_compressor_constructed (GObject *object)
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if (res != Z_OK)
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g_warning ("unexpected zlib error: %s\n", compressor->zstream.msg);
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g_zlib_compressor_set_gzheader (compressor);
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}
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static void
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@ -203,6 +244,24 @@ g_zlib_compressor_class_init (GZlibCompressorClass *klass)
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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/**
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* GZlibCompressor:file-info:
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*
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* If set to a non-%NULL #GFileInfo object, and #GZlibCompressor:format is
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* %G_ZLIB_COMPRESSOR_FORMAT_GZIP, the compressor will write the file name
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* and modification time from the file info to the the GZIP header.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_FILE_INFO,
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g_param_spec_object ("file-info",
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P_("file info"),
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P_("File info"),
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G_TYPE_FILE_INFO,
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G_PARAM_READWRITE |
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G_PARAM_STATIC_STRINGS));
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}
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/**
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@ -230,6 +289,59 @@ g_zlib_compressor_new (GZlibCompressorFormat format,
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return compressor;
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}
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/**
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* g_zlib_compressor_get_file_info:
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* @compressor: a #GZlibCompressor
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*
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* Returns the #GZlibCompressor:file-info property.
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*
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* Returns: (transfer none): a #GFileInfo, or %NULL
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*
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* Since: 2.26
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*/
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GFileInfo *
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g_zlib_compressor_get_file_info (GZlibCompressor *compressor)
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{
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g_return_val_if_fail (G_IS_ZLIB_COMPRESSOR (compressor), NULL);
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return compressor->file_info;
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}
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/**
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* g_zlib_compressor_set_file_info:
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* @compressor: a #GZlibCompressor
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* @file_info: (allow-none): a #GFileInfo
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*
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* Sets @file_info in @compressor. If non-%NULL, and @compressor's
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* #GZlibCompressor:format property is %G_ZLIB_COMPRESSOR_FORMAT_GZIP,
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* it will be used to set the file name and modification time in
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* the GZIP header of the compressed data.
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*
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* Note: it is an error to call this function while a compression is in
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* progress; it may only be called immediately after creation of @compressor,
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* or after resetting it with g_converter_reset().
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*
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* Since: 2.26
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*/
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void
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g_zlib_compressor_set_file_info (GZlibCompressor *compressor,
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GFileInfo *file_info)
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{
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g_return_if_fail (G_IS_ZLIB_COMPRESSOR (compressor));
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if (file_info == compressor->file_info)
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return;
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if (compressor->file_info)
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g_object_unref (compressor->file_info);
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if (file_info)
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g_object_ref (file_info);
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compressor->file_info = file_info;
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g_object_notify (G_OBJECT (compressor), "file-info");
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g_zlib_compressor_set_gzheader (compressor);
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}
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static void
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g_zlib_compressor_reset (GConverter *converter)
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{
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@ -239,6 +351,9 @@ g_zlib_compressor_reset (GConverter *converter)
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res = deflateReset (&compressor->zstream);
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if (res != Z_OK)
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g_warning ("unexpected zlib error: %s\n", compressor->zstream.msg);
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/* deflateReset reset the header too, so re-set it */
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g_zlib_compressor_set_gzheader (compressor);
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}
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static GConverterResult
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@ -28,6 +28,7 @@
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#define __G_ZLIB_COMPRESSOR_H__
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#include <gio/gconverter.h>
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#include <gio/gfileinfo.h>
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G_BEGIN_DECLS
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@ -50,6 +51,10 @@ GType g_zlib_compressor_get_type (void) G_GNUC_CONST;
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GZlibCompressor *g_zlib_compressor_new (GZlibCompressorFormat format,
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int level);
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GFileInfo *g_zlib_compressor_get_file_info (GZlibCompressor *compressor);
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void g_zlib_compressor_set_file_info (GZlibCompressor *compressor,
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GFileInfo *file_info);
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G_END_DECLS
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#endif /* __G_ZLIB_COMPRESSOR_H__ */
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@ -28,6 +28,7 @@
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#include <zlib.h>
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#include <string.h>
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#include "gfileinfo.h"
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#include "gioerror.h"
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#include "gioenums.h"
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#include "gioenumtypes.h"
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@ -36,7 +37,8 @@
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enum {
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PROP_0,
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PROP_FORMAT
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PROP_FORMAT,
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PROP_FILE_INFO
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};
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/**
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@ -50,6 +52,12 @@ enum {
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static void g_zlib_decompressor_iface_init (GConverterIface *iface);
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typedef struct {
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gz_header gzheader;
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char filename[257];
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GFileInfo *file_info;
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} HeaderData;
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/**
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* GZlibDecompressor:
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*
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@ -61,8 +69,35 @@ struct _GZlibDecompressor
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GZlibCompressorFormat format;
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z_stream zstream;
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HeaderData *header_data;
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};
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static void
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g_zlib_decompressor_set_gzheader (GZlibDecompressor *decompressor)
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{
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if (decompressor->format != G_ZLIB_COMPRESSOR_FORMAT_GZIP)
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return;
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if (decompressor->header_data != NULL)
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{
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if (decompressor->header_data->file_info)
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g_object_unref (decompressor->header_data->file_info);
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memset (decompressor->header_data, 0, sizeof (HeaderData));
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}
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else
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{
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decompressor->header_data = g_new0 (HeaderData, 1);
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}
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decompressor->header_data->gzheader.name = (Bytef*) &decompressor->header_data->filename;
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/* We keep one byte to guarantee the string is 0-terminated */
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decompressor->header_data->gzheader.name_max = 256;
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if (inflateGetHeader (&decompressor->zstream, &decompressor->header_data->gzheader) != Z_OK)
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g_warning ("unexpected zlib error: %s\n", decompressor->zstream.msg);
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}
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G_DEFINE_TYPE_WITH_CODE (GZlibDecompressor, g_zlib_decompressor, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_CONVERTER,
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g_zlib_decompressor_iface_init))
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@ -76,6 +111,13 @@ g_zlib_decompressor_finalize (GObject *object)
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inflateEnd (&decompressor->zstream);
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if (decompressor->header_data != NULL)
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{
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if (decompressor->header_data->file_info)
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g_object_unref (decompressor->header_data->file_info);
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g_free (decompressor->header_data);
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}
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G_OBJECT_CLASS (g_zlib_decompressor_parent_class)->finalize (object);
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}
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@ -119,6 +161,13 @@ g_zlib_decompressor_get_property (GObject *object,
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g_value_set_enum (value, decompressor->format);
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break;
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case PROP_FILE_INFO:
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if (decompressor->header_data)
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g_value_set_object (value, decompressor->header_data->file_info);
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else
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g_value_set_object (value, NULL);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -156,6 +205,8 @@ g_zlib_decompressor_constructed (GObject *object)
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if (res != Z_OK)
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g_warning ("unexpected zlib error: %s\n", decompressor->zstream.msg);
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g_zlib_decompressor_set_gzheader (decompressor);
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}
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static void
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@ -177,6 +228,25 @@ g_zlib_decompressor_class_init (GZlibDecompressorClass *klass)
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G_ZLIB_COMPRESSOR_FORMAT_ZLIB,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_STATIC_STRINGS));
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/**
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* GZlibDecompressor:file-info:
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*
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* A #GFileInfo containing the information found in the GZIP header
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* of the data stream processed, or %NULL if the header was not yet
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* fully processed, is not present at all, or the compressor's
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* #GZlibDecompressor:format property is not %G_ZLIB_COMPRESSOR_FORMAT_GZIP.
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*
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* Since: 2.26
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*/
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g_object_class_install_property (gobject_class,
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PROP_FILE_INFO,
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g_param_spec_object ("file-info",
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P_("file info"),
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P_("File info"),
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G_TYPE_FILE_INFO,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS));
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}
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/**
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@ -201,6 +271,31 @@ g_zlib_decompressor_new (GZlibCompressorFormat format)
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return decompressor;
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}
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/**
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* g_zlib_decompressor_get_file_info:
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* @decompressor: a #GZlibDecompressor
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*
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* Retrieves the #GFileInfo constructed from the GZIP header data
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* of compressed data processed by @compressor, or %NULL if @decompressor's
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* #GZlibDecompressor:format property is not %G_ZLIB_COMPRESSOR_FORMAT_GZIP,
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* or the header data was not fully processed yet, or it not present in the
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* data stream at all.
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*
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* Returns: (transfer none): a #GFileInfo, or %NULL
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*
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* Since: 2.26
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*/
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GFileInfo *
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g_zlib_decompressor_get_file_info (GZlibDecompressor *decompressor)
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{
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g_return_val_if_fail (G_IS_ZLIB_DECOMPRESSOR (decompressor), NULL);
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if (decompressor->header_data)
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return decompressor->header_data->file_info;
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return NULL;
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}
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static void
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g_zlib_decompressor_reset (GConverter *converter)
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{
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@ -210,6 +305,8 @@ g_zlib_decompressor_reset (GConverter *converter)
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res = inflateReset (&decompressor->zstream);
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if (res != Z_OK)
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g_warning ("unexpected zlib error: %s\n", decompressor->zstream.msg);
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g_zlib_decompressor_set_gzheader (decompressor);
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}
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static GConverterResult
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@ -271,17 +368,38 @@ g_zlib_decompressor_convert (GConverter *converter,
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return G_CONVERTER_ERROR;
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}
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if (res == Z_OK || res == Z_STREAM_END)
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{
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*bytes_read = inbuf_size - decompressor->zstream.avail_in;
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*bytes_written = outbuf_size - decompressor->zstream.avail_out;
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g_assert (res == Z_OK || res == Z_STREAM_END);
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if (res == Z_STREAM_END)
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return G_CONVERTER_FINISHED;
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return G_CONVERTER_CONVERTED;
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*bytes_read = inbuf_size - decompressor->zstream.avail_in;
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*bytes_written = outbuf_size - decompressor->zstream.avail_out;
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if (decompressor->header_data != NULL &&
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decompressor->header_data->gzheader.done == 1)
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{
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HeaderData *data = decompressor->header_data;
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/* So we don't notify again */
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data->gzheader.done = 2;
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data->file_info = g_file_info_new ();
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g_file_info_set_attribute_uint64 (data->file_info,
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G_FILE_ATTRIBUTE_TIME_MODIFIED,
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data->gzheader.time);
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g_file_info_set_attribute_uint32 (data->file_info,
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G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC,
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0);
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if (data->filename[0] != '\0')
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g_file_info_set_attribute_byte_string (data->file_info,
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G_FILE_ATTRIBUTE_STANDARD_NAME,
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data->filename);
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||||
|
||||
g_object_notify (G_OBJECT (decompressor), "file-info");
|
||||
}
|
||||
|
||||
g_assert_not_reached ();
|
||||
if (res == Z_STREAM_END)
|
||||
return G_CONVERTER_FINISHED;
|
||||
return G_CONVERTER_CONVERTED;
|
||||
}
|
||||
|
||||
static void
|
||||
|
||||
@ -28,6 +28,7 @@
|
||||
#define __G_ZLIB_DECOMPRESSOR_H__
|
||||
|
||||
#include <gio/gconverter.h>
|
||||
#include <gio/gfileinfo.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
@ -49,6 +50,8 @@ GType g_zlib_decompressor_get_type (void) G_GNUC_CONST;
|
||||
|
||||
GZlibDecompressor *g_zlib_decompressor_new (GZlibCompressorFormat format);
|
||||
|
||||
GFileInfo *g_zlib_decompressor_get_file_info (GZlibDecompressor *decompressor);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __G_ZLIB_DECOMPRESSOR_H__ */
|
||||
|
||||
@ -49,6 +49,23 @@ static GOptionEntry entries[] = {
|
||||
{NULL}
|
||||
};
|
||||
|
||||
static void
|
||||
decompressor_file_info_notify_cb (GZlibDecompressor *decompressor,
|
||||
GParamSpec *pspec,
|
||||
gpointer data)
|
||||
{
|
||||
GFileInfo *file_info;
|
||||
const gchar *filename;
|
||||
|
||||
file_info = g_zlib_decompressor_get_file_info (decompressor);
|
||||
if (file_info == NULL)
|
||||
return;
|
||||
|
||||
filename = g_file_info_get_name (file_info);
|
||||
if (filename)
|
||||
g_printerr ("Decompressor filename: %s\n", filename);
|
||||
}
|
||||
|
||||
static void
|
||||
cat (GFile * file)
|
||||
{
|
||||
@ -79,6 +96,7 @@ cat (GFile * file)
|
||||
conv = (GConverter *)g_zlib_decompressor_new (gzip?G_ZLIB_COMPRESSOR_FORMAT_GZIP:G_ZLIB_COMPRESSOR_FORMAT_ZLIB);
|
||||
old = in;
|
||||
in = (GInputStream *) g_converter_input_stream_new (in, conv);
|
||||
g_signal_connect (conv, "notify::file-info", G_CALLBACK (decompressor_file_info_notify_cb), NULL);
|
||||
g_object_unref (conv);
|
||||
g_object_unref (old);
|
||||
}
|
||||
@ -108,11 +126,29 @@ cat (GFile * file)
|
||||
if (compress)
|
||||
{
|
||||
GInputStream *old;
|
||||
conv = (GConverter *)g_zlib_compressor_new (gzip?G_ZLIB_COMPRESSOR_FORMAT_GZIP:G_ZLIB_COMPRESSOR_FORMAT_ZLIB, -1);
|
||||
GFileInfo *in_file_info;
|
||||
|
||||
in_file_info = g_file_query_info (file,
|
||||
G_FILE_ATTRIBUTE_STANDARD_NAME ","
|
||||
G_FILE_ATTRIBUTE_TIME_MODIFIED,
|
||||
G_FILE_QUERY_INFO_NONE,
|
||||
NULL,
|
||||
&error);
|
||||
if (in_file_info == NULL)
|
||||
{
|
||||
g_printerr ("%s: %s: error reading file info: %s\n",
|
||||
g_get_prgname (), g_file_get_uri (file), error->message);
|
||||
g_error_free (error);
|
||||
return;
|
||||
}
|
||||
|
||||
conv = (GConverter *)g_zlib_compressor_new(gzip?G_ZLIB_COMPRESSOR_FORMAT_GZIP:G_ZLIB_COMPRESSOR_FORMAT_ZLIB, -1);
|
||||
g_zlib_compressor_set_file_info (G_ZLIB_COMPRESSOR (conv), in_file_info);
|
||||
old = in;
|
||||
in = (GInputStream *) g_converter_input_stream_new (in, conv);
|
||||
g_object_unref (conv);
|
||||
g_object_unref (old);
|
||||
g_object_unref (in_file_info);
|
||||
}
|
||||
|
||||
while (1)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user