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-rw-r--r--plug-ins/common/file-compressor.c1017
1 files changed, 1017 insertions, 0 deletions
diff --git a/plug-ins/common/file-compressor.c b/plug-ins/common/file-compressor.c
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+++ b/plug-ins/common/file-compressor.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ * Copyright (C) 1997 Daniel Risacher, magnus@alum.mit.edu
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* Minor changes to support file magic */
+/* 4 Oct 1997 -- Risacher */
+
+/* compressor plug-in for GIMP */
+/* based on gz.c which in turn is */
+/* loosley based on url.c by */
+/* Josh MacDonald, jmacd@cs.berkeley.edu */
+
+/* and, very loosely on hrz.c by */
+/* Albert Cahalan <acahalan at cs.uml.edu> */
+
+/* LZMA compression code is based on code by Lasse Collin which was
+ * placed in the public-domain. */
+
+/* This is reads and writes compressed image files for GIMP
+ *
+ * It should work with file names of the form
+ * filename.foo.[gz|bz2] where foo is some already-recognized extension
+ *
+ * and it also works for names of the form
+ * filename.xcf[gz|bz2] - which is equivalent to
+ * filename.xcf.[gz|bz2]
+ *
+ * I added the xcfgz bit because having a default extension of xcf.gz
+ * can confuse the file selection dialog box somewhat, forcing the
+ * user to type sometimes when he/she otherwise wouldn't need to.
+ *
+ * I later decided I didn't like it because I don't like to bloat
+ * the file-extension namespace. But I left in the recognition
+ * feature/bug so if people want to use files named foo.xcfgz by
+ * default, they can just hack their pluginrc file.
+ *
+ * to do this hack, change :
+ * "xcf.gz,gz,xcfgz"
+ * to
+ * "xcfgz,gz,xcf.gz"
+ *
+ *
+ * -Dan Risacher, 0430 CDT, 26 May 1997
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <errno.h>
+
+#include <sys/types.h>
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <glib/gstdio.h>
+#ifndef _O_BINARY
+#define _O_BINARY 0
+#endif
+
+#include <libgimp/gimp.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+#include <zlib.h>
+#include <bzlib.h>
+#include <lzma.h>
+
+
+/* Author 1: Josh MacDonald (url.c) */
+/* Author 2: Daniel Risacher (gz.c) */
+/* Author 3: Michael Natterer (compressor.c) */
+
+/* According to USAF Lt Steve Werhle, US DoD software development
+ * contracts average about $25 USD per source line of code (SLOC). By
+ * that metric, I figure this plug-in is worth about $10,000 USD */
+/* But you got it free. Magic of Gnu. */
+
+typedef gboolean (*LoadFn) (const char *infile,
+ const char *outfile);
+typedef gboolean (*SaveFn) (const char *infile,
+ const char *outfile);
+
+typedef struct _Compressor Compressor;
+
+struct _Compressor
+{
+ const gchar *file_type;
+ const gchar *mime_type;
+ const gchar *extensions;
+ const gchar *magic;
+ const gchar *xcf_extension;
+ const gchar *generic_extension;
+
+ const gchar *load_proc;
+ const gchar *load_blurb;
+ const gchar *load_help;
+ LoadFn load_fn;
+
+ const gchar *save_proc;
+ const gchar *save_blurb;
+ const gchar *save_help;
+ SaveFn save_fn;
+};
+
+
+static void query (void);
+static void run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+
+static GimpPDBStatusType save_image (const Compressor *compressor,
+ const gchar *filename,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gint32 run_mode,
+ GError **error);
+static gint32 load_image (const Compressor *compressor,
+ const gchar *filename,
+ gint32 run_mode,
+ GimpPDBStatusType *status,
+ GError **error);
+
+static gboolean valid_file (const gchar *filename);
+static const gchar * find_extension (const Compressor *compressor,
+ const gchar *filename);
+
+static gboolean gzip_load (const char *infile,
+ const char *outfile);
+static gboolean gzip_save (const char *infile,
+ const char *outfile);
+
+static gboolean bzip2_load (const char *infile,
+ const char *outfile);
+static gboolean bzip2_save (const char *infile,
+ const char *outfile);
+
+static gboolean xz_load (const char *infile,
+ const char *outfile);
+static gboolean xz_save (const char *infile,
+ const char *outfile);
+static goffset get_file_info (const gchar *filename);
+
+
+static const Compressor compressors[] =
+{
+ {
+ N_("gzip archive"),
+ "application/x-gzip",
+ "xcf.gz,xcfgz", /* FIXME "xcf.gz,gz,xcfgz" */
+ "0,string,\037\213",
+ ".xcfgz",
+ ".gz",
+
+ "file-gz-load",
+ "loads files compressed with gzip",
+ "This procedure loads files in the gzip compressed format.",
+ gzip_load,
+
+ "file-gz-save",
+ "saves files compressed with gzip",
+ "This procedure saves files in the gzip compressed format.",
+ gzip_save
+ },
+
+ {
+ N_("bzip archive"),
+ "application/x-bzip",
+ "xcf.bz2,xcfbz2", /* FIXME "xcf.bz2,bz2,xcfbz2" */
+ "0,string,BZh",
+ ".xcfbz2",
+ ".bz2",
+
+ "file-bz2-load",
+ "loads files compressed with bzip2",
+ "This procedure loads files in the bzip2 compressed format.",
+ bzip2_load,
+
+ "file-bz2-save",
+ "saves files compressed with bzip2",
+ "This procedure saves files in the bzip2 compressed format.",
+ bzip2_save
+ },
+
+ {
+ N_("xz archive"),
+ "application/x-xz",
+ "xcf.xz,xcfxz", /* FIXME "xcf.xz,xz,xcfxz" */
+ "0,string,\3757zXZ\x00",
+ ".xcfxz",
+ ".xz",
+
+ "file-xz-load",
+ "loads files compressed with xz",
+ "This procedure loads files in the xz compressed format.",
+ xz_load,
+
+ "file-xz-save",
+ "saves files compressed with xz",
+ "This procedure saves files in the xz compressed format.",
+ xz_save
+ }
+};
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ query, /* query_proc */
+ run, /* run_proc */
+};
+
+
+MAIN ()
+
+
+static void
+query (void)
+{
+ static const GimpParamDef load_args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_STRING, "filename", "The name of the file to load" },
+ { GIMP_PDB_STRING, "raw-filename", "The name entered" }
+ };
+ static const GimpParamDef load_return_vals[] =
+ {
+ { GIMP_PDB_IMAGE, "image", "Output image" },
+ };
+
+ static const GimpParamDef save_args[] =
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Drawable to save" },
+ { GIMP_PDB_STRING, "filename", "The name of the file to "
+ "save the image in" },
+ { GIMP_PDB_STRING, "raw-filename", "The name entered" },
+ };
+
+ gint i;
+
+ for (i = 0; i < G_N_ELEMENTS (compressors); i++)
+ {
+ const Compressor *compressor = &compressors[i];
+
+ gimp_install_procedure (compressor->load_proc,
+ compressor->load_blurb,
+ compressor->load_help,
+ "Daniel Risacher",
+ "Daniel Risacher, Spencer Kimball and Peter Mattis",
+ "1995-1997",
+ compressor->file_type,
+ NULL,
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (load_args),
+ G_N_ELEMENTS (load_return_vals),
+ load_args, load_return_vals);
+
+ gimp_register_file_handler_mime (compressor->load_proc,
+ compressor->mime_type);
+ gimp_register_magic_load_handler (compressor->load_proc,
+ compressor->extensions,
+ "",
+ compressor->magic);
+
+ gimp_install_procedure (compressor->save_proc,
+ compressor->save_blurb,
+ compressor->save_help,
+ "Daniel Risacher",
+ "Daniel Risacher, Spencer Kimball and Peter Mattis",
+ "1995-1997",
+ compressor->file_type,
+ "RGB*, GRAY*, INDEXED*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (save_args), 0,
+ save_args, NULL);
+
+ gimp_register_file_handler_mime (compressor->save_proc,
+ compressor->mime_type);
+ gimp_register_save_handler (compressor->save_proc,
+ compressor->extensions, "");
+ }
+}
+
+static void
+run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[2];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ GError *error = NULL;
+ gint32 image_ID;
+ gint i;
+
+ run_mode = param[0].data.d_int32;
+
+ INIT_I18N();
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
+
+ /* We handle PDB errors by forwarding them to the caller in
+ * our return values.
+ */
+ gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_PLUGIN);
+
+ for (i = 0; i < G_N_ELEMENTS (compressors); i++)
+ {
+ const Compressor *compressor = &compressors[i];
+
+ if (! strcmp (name, compressor->load_proc))
+ {
+ image_ID = load_image (compressor,
+ param[1].data.d_string,
+ param[0].data.d_int32,
+ &status, &error);
+
+ if (image_ID != -1 && status == GIMP_PDB_SUCCESS)
+ {
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_IMAGE;
+ values[1].data.d_image = image_ID;
+ }
+
+ break;
+ }
+ else if (! strcmp (name, compressor->save_proc))
+ {
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+ break;
+ case GIMP_RUN_NONINTERACTIVE:
+ /* Make sure all the arguments are there! */
+ if (nparams != 5)
+ status = GIMP_PDB_CALLING_ERROR;
+ break;
+ case GIMP_RUN_WITH_LAST_VALS:
+ break;
+
+ default:
+ break;
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ status = save_image (compressor,
+ param[3].data.d_string,
+ param[1].data.d_int32,
+ param[2].data.d_int32,
+ param[0].data.d_int32,
+ &error);
+
+ break;
+ }
+ }
+
+ if (i == G_N_ELEMENTS (compressors))
+ status = GIMP_PDB_CALLING_ERROR;
+
+ if (status != GIMP_PDB_SUCCESS && error)
+ {
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_STRING;
+ values[1].data.d_string = error->message;
+ }
+
+ values[0].data.d_status = status;
+}
+
+static GimpPDBStatusType
+save_image (const Compressor *compressor,
+ const gchar *filename,
+ gint32 image_ID,
+ gint32 drawable_ID,
+ gint32 run_mode,
+ GError **error)
+{
+ const gchar *ext;
+ gchar *tmpname;
+
+ ext = find_extension (compressor, filename);
+
+ if (! ext)
+ {
+ g_message (_("No sensible file extension, saving as compressed XCF."));
+ ext = ".xcf";
+ }
+
+ /* get a temp name with the right extension and save into it. */
+
+ tmpname = gimp_temp_name (ext + 1);
+
+ if (! (gimp_file_save (run_mode,
+ image_ID,
+ drawable_ID,
+ tmpname,
+ tmpname) && valid_file (tmpname)))
+ {
+ g_unlink (tmpname);
+ g_free (tmpname);
+
+ g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+ "%s", gimp_get_pdb_error ());
+
+ return GIMP_PDB_EXECUTION_ERROR;
+ }
+
+ gimp_progress_init_printf (_("Compressing '%s'"),
+ gimp_filename_to_utf8 (filename));
+
+ if (!compressor->save_fn (tmpname, filename))
+ {
+ g_unlink (tmpname);
+ g_free (tmpname);
+
+ return GIMP_PDB_EXECUTION_ERROR;
+ }
+
+ g_unlink (tmpname);
+ gimp_progress_update (1.0);
+ g_free (tmpname);
+
+ /* ask the core to save a thumbnail for compressed XCF files */
+ if (strcmp (ext, ".xcf") == 0)
+ gimp_file_save_thumbnail (image_ID, filename);
+
+ return GIMP_PDB_SUCCESS;
+}
+
+static gint32
+load_image (const Compressor *compressor,
+ const gchar *filename,
+ gint32 run_mode,
+ GimpPDBStatusType *status,
+ GError **error)
+{
+ gint32 image_ID;
+ const gchar *ext;
+ gchar *tmpname;
+
+ ext = find_extension (compressor, filename);
+
+ if (! ext)
+ {
+ g_message (_("No sensible file extension, "
+ "attempting to load with file magic."));
+ ext = ".foo";
+ }
+
+ /* find a temp name */
+ tmpname = gimp_temp_name (ext + 1);
+
+ if (!compressor->load_fn (filename, tmpname))
+ {
+ g_free (tmpname);
+ *status = GIMP_PDB_EXECUTION_ERROR;
+ return -1;
+ }
+
+ /* now that we uncompressed it, load the temp file */
+
+ image_ID = gimp_file_load (run_mode, tmpname, tmpname);
+
+ g_unlink (tmpname);
+ g_free (tmpname);
+
+ if (image_ID != -1)
+ {
+ *status = GIMP_PDB_SUCCESS;
+
+ gimp_image_set_filename (image_ID, filename);
+ }
+ else
+ {
+ /* Forward the return status of the underlining plug-in for the
+ * given format.
+ */
+ *status = gimp_get_pdb_status ();
+
+ g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED,
+ "%s", gimp_get_pdb_error ());
+ }
+
+ return image_ID;
+}
+
+static gboolean
+valid_file (const gchar *filename)
+{
+ GStatBuf buf;
+
+ return g_stat (filename, &buf) == 0 && buf.st_size > 0;
+}
+
+static const gchar *
+find_extension (const Compressor *compressor,
+ const gchar *filename)
+{
+ gchar *filename_copy;
+ gchar *ext;
+
+ /* we never free this copy - aren't we evil! */
+ filename_copy = g_strdup (filename);
+
+ /* find the extension, boy! */
+ ext = strrchr (filename_copy, '.');
+
+ while (TRUE)
+ {
+ if (!ext || ext[1] == '\0' || strchr (ext, G_DIR_SEPARATOR))
+ {
+ return NULL;
+ }
+
+ if (0 == g_ascii_strcasecmp (ext, compressor->xcf_extension))
+ {
+ return ".xcf"; /* we've found it */
+ }
+ if (0 != g_ascii_strcasecmp (ext, compressor->generic_extension))
+ {
+ return ext;
+ }
+ else
+ {
+ /* we found ".gz" so strip it, loop back, and look again */
+ *ext = '\0';
+ ext = strrchr (filename_copy, '.');
+ }
+ }
+}
+
+static gboolean
+gzip_load (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ int fd;
+ gzFile in;
+ FILE *out;
+ char buf[16384];
+ int len;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ fd = g_open (infile, O_RDONLY | _O_BINARY, 0);
+ if (fd == -1)
+ goto out;
+
+ in = gzdopen (fd, "rb");
+ if (!in)
+ {
+ close (fd);
+ goto out;
+ }
+
+ out = g_fopen (outfile, "wb");
+ if (!out)
+ goto out;
+
+ while (TRUE)
+ {
+ len = gzread (in, buf, sizeof buf);
+
+ if (len < 0)
+ break;
+ else if (len == 0)
+ {
+ ret = TRUE;
+ break;
+ }
+
+ if (fwrite(buf, 1, len, out) != len)
+ break;
+ }
+
+ out:
+ /* There is no need to close(fd) as it is closed by gzclose(). */
+ if (in)
+ if (gzclose (in) != Z_OK)
+ ret = FALSE;
+
+ if (out)
+ fclose (out);
+
+ return ret;
+}
+
+static gboolean
+gzip_save (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ FILE *in;
+ int fd;
+ gzFile out;
+ char buf[16384];
+ int len;
+ goffset tot = 0, file_size;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ in = g_fopen (infile, "rb");
+ if (!in)
+ goto out;
+
+ fd = g_open (outfile, O_CREAT | O_WRONLY | O_TRUNC | _O_BINARY, 0664);
+ if (fd == -1)
+ goto out;
+
+ out = gzdopen (fd, "wb");
+ if (!out)
+ {
+ close (fd);
+ goto out;
+ }
+
+ file_size = get_file_info (infile);
+ while (TRUE)
+ {
+ len = fread (buf, 1, sizeof buf, in);
+ if (ferror (in))
+ break;
+
+ if (len < 0)
+ break;
+ else if (len == 0)
+ {
+ ret = TRUE;
+ break;
+ }
+
+ if (gzwrite (out, buf, len) != len)
+ break;
+
+ gimp_progress_update ((tot += len) * 1.0 / file_size);
+ }
+
+ out:
+ if (in)
+ fclose (in);
+
+ /* There is no need to close(fd) as it is closed by gzclose(). */
+ if (out)
+ if (gzclose (out) != Z_OK)
+ ret = FALSE;
+
+ return ret;
+}
+
+static gboolean
+bzip2_load (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ int fd;
+ BZFILE *in;
+ FILE *out;
+ char buf[16384];
+ int len;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ fd = g_open (infile, O_RDONLY | _O_BINARY, 0);
+ if (fd == -1)
+ goto out;
+
+ in = BZ2_bzdopen (fd, "rb");
+ if (!in)
+ {
+ close (fd);
+ goto out;
+ }
+
+ out = g_fopen (outfile, "wb");
+ if (!out)
+ goto out;
+
+ while (TRUE)
+ {
+ len = BZ2_bzread (in, buf, sizeof buf);
+
+ if (len < 0)
+ break;
+ else if (len == 0)
+ {
+ ret = TRUE;
+ break;
+ }
+
+ if (fwrite(buf, 1, len, out) != len)
+ break;
+ }
+
+ out:
+ /* TODO: Check this in the case of BZ2_bzclose(): */
+ /* There is no need to close(fd) as it is closed by BZ2_bzclose(). */
+ if (in)
+ BZ2_bzclose (in);
+
+ if (out)
+ fclose (out);
+
+ return ret;
+}
+
+static gboolean
+bzip2_save (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ FILE *in;
+ int fd;
+ BZFILE *out;
+ char buf[16384];
+ int len;
+ goffset tot = 0, file_size;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ in = g_fopen (infile, "rb");
+ if (!in)
+ goto out;
+
+ fd = g_open (outfile, O_CREAT | O_WRONLY | O_TRUNC | _O_BINARY, 0664);
+ if (fd == -1)
+ goto out;
+
+ out = BZ2_bzdopen (fd, "wb");
+ if (!out)
+ {
+ close (fd);
+ goto out;
+ }
+
+ file_size = get_file_info (infile);
+ while (TRUE)
+ {
+ len = fread (buf, 1, sizeof buf, in);
+ if (ferror (in))
+ break;
+
+ if (len < 0)
+ break;
+ else if (len == 0)
+ {
+ ret = TRUE;
+ break;
+ }
+
+ if (BZ2_bzwrite (out, buf, len) != len)
+ break;
+
+ gimp_progress_update ((tot += len) * 1.0 / file_size);
+ }
+
+ out:
+ if (in)
+ fclose (in);
+
+ /* TODO: Check this in the case of BZ2_bzclose(): */
+ /* There is no need to close(fd) as it is closed by BZ2_bzclose(). */
+ if (out)
+ BZ2_bzclose (out);
+
+ return ret;
+}
+
+static gboolean
+xz_load (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ FILE *in;
+ FILE *out;
+ lzma_stream strm = LZMA_STREAM_INIT;
+ lzma_action action;
+ guint8 inbuf[BUFSIZ];
+ guint8 outbuf[BUFSIZ];
+ lzma_ret status;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ in = g_fopen (infile, "rb");
+ if (!in)
+ goto out;
+
+ out = g_fopen (outfile, "wb");
+ if (!out)
+ goto out;
+
+ if (lzma_stream_decoder (&strm, UINT64_MAX, 0) != LZMA_OK)
+ goto out;
+
+ strm.next_in = NULL;
+ strm.avail_in = 0;
+ strm.next_out = outbuf;
+ strm.avail_out = sizeof outbuf;
+
+ action = LZMA_RUN;
+ status = LZMA_OK;
+
+ while (status == LZMA_OK)
+ {
+ /* Fill the input buffer if it is empty. */
+ if ((strm.avail_in == 0) && (!feof(in)))
+ {
+ strm.next_in = inbuf;
+ strm.avail_in = fread (inbuf, 1, sizeof inbuf, in);
+
+ if (ferror (in))
+ goto out;
+
+ /* Once the end of the input file has been reached, we need to
+ tell lzma_code() that no more input will be coming and that
+ it should finish the encoding. */
+ if (feof (in))
+ action = LZMA_FINISH;
+ }
+
+ status = lzma_code (&strm, action);
+
+ if ((strm.avail_out == 0) || (status == LZMA_STREAM_END))
+ {
+ /* When lzma_code() has returned LZMA_STREAM_END, the output
+ buffer is likely to be only partially full. Calculate how
+ much new data there is to be written to the output file. */
+ size_t write_size = sizeof outbuf - strm.avail_out;
+
+ if (fwrite (outbuf, 1, write_size, out) != write_size)
+ goto out;
+
+ /* Reset next_out and avail_out. */
+ strm.next_out = outbuf;
+ strm.avail_out = sizeof outbuf;
+ }
+ }
+
+ if (status != LZMA_STREAM_END)
+ goto out;
+
+ lzma_end (&strm);
+ ret = TRUE;
+
+ out:
+ if (in)
+ fclose (in);
+
+ if (out)
+ fclose (out);
+
+ return ret;
+}
+
+static gboolean
+xz_save (const char *infile,
+ const char *outfile)
+{
+ gboolean ret;
+ FILE *in;
+ FILE *out;
+ lzma_stream strm = LZMA_STREAM_INIT;
+ lzma_action action;
+ guint8 inbuf[BUFSIZ];
+ guint8 outbuf[BUFSIZ];
+ lzma_ret status;
+ goffset tot = 0, file_size;
+
+ ret = FALSE;
+ in = NULL;
+ out = NULL;
+
+ in = g_fopen (infile, "rb");
+ if (!in)
+ goto out;
+
+ file_size = get_file_info (infile);
+ out = g_fopen (outfile, "wb");
+ if (!out)
+ goto out;
+
+ if (lzma_easy_encoder (&strm,
+ LZMA_PRESET_DEFAULT,
+ LZMA_CHECK_CRC64) != LZMA_OK)
+ goto out;
+
+ strm.next_in = NULL;
+ strm.avail_in = 0;
+ strm.next_out = outbuf;
+ strm.avail_out = sizeof outbuf;
+
+ action = LZMA_RUN;
+ status = LZMA_OK;
+
+ while (status == LZMA_OK)
+ {
+ /* Fill the input buffer if it is empty. */
+ if ((strm.avail_in == 0) && (!feof(in)))
+ {
+ strm.next_in = inbuf;
+ strm.avail_in = fread (inbuf, 1, sizeof inbuf, in);
+
+ if (ferror (in))
+ goto out;
+
+ /* Once the end of the input file has been reached, we need to
+ tell lzma_code() that no more input will be coming and that
+ it should finish the encoding. */
+ if (feof (in))
+ action = LZMA_FINISH;
+
+ gimp_progress_update ((tot += strm.avail_in) * 1.0 / file_size);
+ }
+
+ status = lzma_code (&strm, action);
+
+ if ((strm.avail_out == 0) || (status == LZMA_STREAM_END))
+ {
+ /* When lzma_code() has returned LZMA_STREAM_END, the output
+ buffer is likely to be only partially full. Calculate how
+ much new data there is to be written to the output file. */
+ size_t write_size = sizeof outbuf - strm.avail_out;
+
+ if (fwrite (outbuf, 1, write_size, out) != write_size)
+ goto out;
+
+ /* Reset next_out and avail_out. */
+ strm.next_out = outbuf;
+ strm.avail_out = sizeof outbuf;
+ }
+ }
+
+ if (status != LZMA_STREAM_END)
+ goto out;
+
+ lzma_end (&strm);
+ ret = TRUE;
+
+ out:
+ if (in)
+ fclose (in);
+
+ if (out)
+ fclose (out);
+
+ return ret;
+}
+
+/* get file size from a filename */
+static goffset
+get_file_info (const gchar *filename)
+{
+ GFile *file = g_file_new_for_path (filename);
+ GFileInfo *info;
+ goffset size = 1;
+
+ info = g_file_query_info (file,
+ G_FILE_ATTRIBUTE_STANDARD_SIZE,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, NULL);
+
+ if (info)
+ {
+ size = g_file_info_get_size (info);
+
+ g_object_unref (info);
+ }
+
+ g_object_unref (file);
+
+ return size;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 00:55:23 +0000