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- /* The GIMP -- an image manipulation program
- * Copyright (C) 1995 Spencer Kimball and Peter Mattis
- * Copyright (C) 1997 Daniel Risacher
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
- /* bzip2 plug-in for the gimp */
- /* this is almost exactly the same as the gz(ip) plugin by */
- /* Dan Risacher & Josh, so feel free to go look there. */
- /* GZ plugin adapted to BZ2 by Adam. I've left all other */
- /* Error checking added by srn. */
- /* credits intact since it was only a super-wussy mod. */
-
- /* This is reads and writes bzip2ed image files for the Gimp
- *
- * You need to have bzip2 installed for it to work.
- *
- * It should work with file names of the form
- * filename.foo.bz2 where foo is some already-recognized extension
- */
-
- #include "config.h"
-
- #include <stdlib.h>
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/param.h>
- #include <sys/wait.h>
- #include <sys/stat.h>
- #include <string.h>
- #include <unistd.h>
- #include <errno.h>
- #ifdef __EMX__
- #include <fcntl.h>
- #include <process.h>
- #endif
-
- #include <libgimp/gimp.h>
-
- #include "libgimp/stdplugins-intl.h"
-
-
- static void query (void);
- static void run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals);
-
- static gint32 load_image (gchar *filename,
- gint32 run_mode,
- GimpPDBStatusType *status /* return value */);
- static GimpPDBStatusType save_image (gchar *filename,
- gint32 image_ID,
- gint32 drawable_ID,
- gint32 run_mode);
-
- static gboolean valid_file (gchar *filename);
- static gchar * find_extension (gchar *filename);
-
- GimpPlugInInfo PLUG_IN_INFO =
- {
- NULL, /* init_proc */
- NULL, /* quit_proc */
- query, /* query_proc */
- run, /* run_proc */
- };
-
- MAIN ()
-
- static void
- query (void)
- {
- static GimpParamDef load_args[] =
- {
- { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
- { GIMP_PDB_STRING, "filename", "The name of the file to load" },
- { GIMP_PDB_STRING, "raw_filename", "The name entered" }
- };
- static GimpParamDef load_return_vals[] =
- {
- { GIMP_PDB_IMAGE, "image", "Output image" }
- };
- static gint nload_args = sizeof (load_args) / sizeof (load_args[0]);
- static gint nload_return_vals = (sizeof (load_return_vals) /
- sizeof (load_return_vals[0]));
-
- static GimpParamDef save_args[] =
- {
- { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
- { 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 of the file to save the image in" }
- };
- static gint nsave_args = sizeof (save_args) / sizeof (save_args[0]);
-
- gimp_install_procedure ("file_bz2_load",
- "loads files compressed with bzip2",
- "You need to have bzip2 installed.",
- "Daniel Risacher",
- "Daniel Risacher, Spencer Kimball and Peter Mattis",
- "1995-1997",
- "<Load>/bzip2",
- NULL,
- GIMP_PLUGIN,
- nload_args, nload_return_vals,
- load_args, load_return_vals);
-
- gimp_install_procedure ("file_bz2_save",
- "saves files compressed with bzip2",
- "You need to have bzip2 installed",
- "Daniel Risacher",
- "Daniel Risacher, Spencer Kimball and Peter Mattis",
- "1995-1997",
- "<Save>/bzip2",
- "RGB*, GRAY*, INDEXED*",
- GIMP_PLUGIN,
- nsave_args, 0,
- save_args, NULL);
-
- gimp_register_magic_load_handler ("file_bz2_load",
- "xcf.bz2,bz2,xcfbz2",
- "",
- "0,string,BZh");
- gimp_register_save_handler ("file_bz2_save",
- "xcf.bz2,bz2,xcfbz2",
- "");
- }
-
- static void
- run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals)
- {
- static GimpParam values[2];
- GimpRunModeType run_mode;
- GimpPDBStatusType status = GIMP_PDB_SUCCESS;
- gint32 image_ID;
-
- 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;
-
- if (strcmp (name, "file_bz2_load") == 0)
- {
- image_ID = load_image (param[1].data.d_string,
- param[0].data.d_int32,
- &status);
-
- if (image_ID != -1 &&
- status == GIMP_PDB_SUCCESS)
- {
- *nreturn_vals = 2;
- values[1].type = GIMP_PDB_IMAGE;
- values[1].data.d_image = image_ID;
- }
- }
- else if (strcmp (name, "file_bz2_save") == 0)
- {
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- break;
- case GIMP_RUN_NONINTERACTIVE:
- /* Make sure all the arguments are there! */
- if (nparams != 4)
- status = GIMP_PDB_CALLING_ERROR;
- break;
- case GIMP_RUN_WITH_LAST_VALS:
- break;
-
- default:
- break;
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- status = save_image (param[3].data.d_string,
- param[1].data.d_int32,
- param[2].data.d_int32,
- param[0].data.d_int32);
- }
- }
- else
- {
- status = GIMP_PDB_CALLING_ERROR;
- }
-
- values[0].data.d_status = status;
- }
-
- #ifdef __EMX__
- static gint
- spawn_bz (gchar *filename,
- gchar *tmpname,
- gchar *parms,
- gint *pid)
- {
- FILE *f;
- gint tfd;
-
- if (!(f = fopen(filename,"wb")))
- {
- g_message ("bz: fopen failed: %s\n", g_strerror (errno));
- return -1;
- }
-
- /* save fileno(stdout) */
- tfd = dup (fileno (stdout));
- /* make stdout for this process be the output file */
- if (dup2 (fileno (f), fileno (stdout)) == -1)
- {
- g_message ("bz: dup2 failed: %s\n", g_strerror (errno));
- close (tfd);
- return -1;
- }
- fcntl (tfd, F_SETFD, FD_CLOEXEC);
- *pid = spawnlp (P_NOWAIT, "bzip2", "bzip2", parms, tmpname, NULL);
- fclose (f);
- /* restore fileno(stdout) */
- dup2 (tfd, fileno (stdout));
- close (tfd);
- if (*pid == -1)
- {
- g_message ("bz: spawn failed: %s\n", g_strerror (errno));
- return -1;
- }
- return 0;
- }
- #endif
-
- static GimpPDBStatusType
- save_image (gchar *filename,
- gint32 image_ID,
- gint32 drawable_ID,
- gint32 run_mode)
- {
- FILE *f;
- gchar *ext;
- gchar *tmpname;
- gint pid;
- gint wpid;
- gint process_status;
-
- if (NULL == (ext = find_extension (filename)))
- {
- g_message (_("bz2: can't open bzip2ed file without a "
- "sensible extension\n"));
- return GIMP_PDB_CALLING_ERROR;
- }
-
- /* 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)) )
- {
- unlink (tmpname);
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
-
- #ifndef __EMX__
- /* fork off a bzip2 process */
- if ((pid = fork ()) < 0)
- {
- g_message ("bz2: fork failed: %s\n", g_strerror (errno));
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
- else if (pid == 0)
- {
- if (!(f = fopen (filename, "w")))
- {
- g_message ("bz2: fopen failed: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit(127);
- }
-
- /* make stdout for this process be the output file */
- if (-1 == dup2 (fileno (f), fileno (stdout)))
- g_message ("bz2: dup2 failed: %s\n", g_strerror (errno));
-
- /* and bzip2 into it */
- execlp ("bzip2", "bzip2", "-cf", tmpname, NULL);
- g_message ("bz2: exec failed: bzip2: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit (127);
- }
- else
- #else /* __EMX__ */
- if (spawn_bz (filename, tmpname, "-cf", &pid) == -1)
- {
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
- #endif
- {
- wpid = waitpid (pid, &process_status, 0);
-
- if ((wpid < 0)
- || !WIFEXITED (process_status)
- || (WEXITSTATUS (process_status) != 0))
- {
- g_message ("bz2: bzip2 exited abnormally on file %s\n", tmpname);
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
- }
-
- unlink (tmpname);
- g_free (tmpname);
-
- return GIMP_PDB_SUCCESS;
- }
-
- static gint32
- load_image (gchar *filename,
- gint32 run_mode,
- GimpPDBStatusType *status /* return value */)
- {
- gint32 image_ID;
- gchar *ext;
- gchar *tmpname;
- gint pid;
- gint wpid;
- gint process_status;
-
- if (NULL == (ext = find_extension (filename)))
- {
- g_message (_("bz2: can't open bzip2ed file without a "
- "sensible extension\n"));
- *status = GIMP_PDB_CALLING_ERROR;
- return -1;
- }
-
- /* find a temp name */
- tmpname = gimp_temp_name (ext + 1);
-
- #ifndef __EMX__
- /* fork off a g(un)zip and wait for it */
- if ((pid = fork ()) < 0)
- {
- g_message ("bz2: fork failed: %s\n", g_strerror (errno));
- g_free (tmpname);
- *status = GIMP_PDB_EXECUTION_ERROR;
- return -1;
- }
- else if (pid == 0) /* child process */
- {
- FILE *f;
- if (!(f = fopen (tmpname,"w")))
- {
- g_message ("bz2: fopen failed: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit (127);
- }
-
- /* make stdout for this child process be the temp file */
- if (-1 == dup2 (fileno (f), fileno (stdout)))
- g_message ("bz2: dup2 failed: %s\n", g_strerror (errno));
-
- /* and unzip into it */
- execlp ("bzip2", "bzip2", "-cfd", filename, NULL);
- g_message ("bz2: exec failed: bunzip2: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit (127);
- }
- else /* parent process */
- #else /* __EMX__ */
- if (spawn_bz (filename, tmpname, "-cfd", &pid) == -1)
- {
- g_free (tmpname);
- *status = GIMP_PDB_EXECUTION_ERROR;
- return -1;
- }
- #endif
- {
- wpid = waitpid (pid, &process_status, 0);
-
- if ((wpid < 0)
- || !WIFEXITED (process_status)
- || (WEXITSTATUS (process_status) != 0))
- {
- g_message ("bz2: bzip2 exited abnormally on file %s\n", filename);
- g_free (tmpname);
- *status = GIMP_PDB_EXECUTION_ERROR;
- return -1;
- }
- }
-
- /* now that we un-bzip2ed it, load the temp file */
-
- image_ID = gimp_file_load (run_mode, tmpname, tmpname);
-
- unlink (tmpname);
- g_free (tmpname);
-
- if (image_ID != -1)
- {
- *status = GIMP_PDB_SUCCESS;
- gimp_image_set_filename (image_ID, filename);
- }
- else
- *status = GIMP_PDB_EXECUTION_ERROR;
-
- return image_ID;
- }
-
- static gboolean
- valid_file (gchar* filename)
- {
- gint stat_res;
- struct stat buf;
-
- stat_res = stat (filename, &buf);
-
- if ((0 == stat_res) && (buf.st_size > 0))
- return TRUE;
- else
- return FALSE;
- }
-
- static gchar *
- find_extension (gchar* filename)
- {
- gchar *filename_copy;
- gchar *ext;
-
- /* we never free this copy - aren't we evil! */
- filename_copy = g_malloc (strlen (filename) + 1);
- strcpy (filename_copy, filename);
-
- /* find the extension, boy! */
- ext = strrchr (filename_copy, '.');
-
- while (1)
- {
- if (!ext || ext[1] == 0 || strchr (ext, '/'))
- {
- return NULL;
- }
- if (0 == strcmp (ext, ".xcfbz2"))
- {
- return ".xcf"; /* we've found it */
- }
- if (0 != strcmp (ext, ".bz2"))
- {
- return ext;
- }
- else
- {
- /* we found ".bz2" so strip it, loop back, and look again */
- *ext = 0;
- ext = strrchr (filename_copy, '.');
- }
- }
- }
-