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- /* The GIMP -- an 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 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.
- */
-
- /* Minor changes to support file magic */
- /* 4 Oct 1997 -- Risacher */
-
- /* gzip plug-in for the gimp */
- /* 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> */
-
- /* This is reads and writes gziped image files for the Gimp
- *
- * You need to have gzip installed for it to work.
- *
- * It should work with file names of the form
- * filename.foo.gz where foo is some already-recognized extension
- *
- * and it also works for names of the form
- * filename.xcfgz - which is equivalent to
- * filename.xcf.gz
- *
- * 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 <stdlib.h>
- #include <stdio.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 <string.h>
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #include <errno.h>
-
- #ifdef __EMX__
- #include <fcntl.h>
- #include <process.h>
- #endif
-
- #include <libgimp/gimp.h>
-
- #ifdef G_OS_WIN32
- #define STRICT
- #define WinMain WinMain_foo
- #include <windows.h>
- #undef WinMain
- #endif
-
- #include "libgimp/stdplugins-intl.h"
-
-
- /* Author 1: Josh MacDonald (url.c) */
- /* Author 2: Daniel Risacher (gz.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. */
-
-
- 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_gz_load",
- "loads files compressed with gzip",
- "You need to have gzip installed.",
- "Daniel Risacher",
- "Daniel Risacher, Spencer Kimball and Peter Mattis",
- "1995-1997",
- "<Load>/gzip",
- NULL,
- GIMP_PLUGIN,
- nload_args, nload_return_vals,
- load_args, load_return_vals);
-
- gimp_install_procedure ("file_gz_save",
- "saves files compressed with gzip",
- "You need to have gzip installed.",
- "Daniel Risacher",
- "Daniel Risacher, Spencer Kimball and Peter Mattis",
- "1995-1997",
- "<Save>/gzip",
- "RGB*, GRAY*, INDEXED*",
- GIMP_PLUGIN,
- nsave_args, 0,
- save_args, NULL);
-
- gimp_register_magic_load_handler ("file_gz_load",
- "xcf.gz,gz,xcfgz",
- "",
- "0,string,\037\213");
- gimp_register_save_handler ("file_gz_save",
- "xcf.gz,gz,xcfgz",
- "");
- }
-
- 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_gz_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_gz_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_gzip (gchar *filename,
- gchar *tmpname,
- gchar *parms,
- gint *pid)
- {
- FILE *f;
- gint tfd;
-
- if (!(f = fopen (filename,"w")))
- {
- g_message ("gz: 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 ("gz: dup2 failed: %s\n", g_strerror (errno));
- close (tfd);
- return -1;
- }
- fcntl (tfd, F_SETFD, FD_CLOEXEC);
- *pid = spawnlp (P_NOWAIT, "gzip", "gzip", parms, tmpname, NULL);
- fclose (f);
- /* restore fileno(stdout) */
- dup2 (tfd, fileno (stdout));
- close (tfd);
- if (*pid == -1)
- {
- g_message ("gz: 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)
- {
- gchar *ext;
- gchar *tmpname;
- #ifndef G_OS_WIN32
- FILE *f;
- gint pid;
- gint wpid;
- gint process_status;
- #else
- FILE *in, *out;
- STARTUPINFO startupinfo;
- PROCESS_INFORMATION processinfo;
- #endif
-
- if (NULL == (ext = find_extension (filename)))
- {
- g_message (_("gz: no sensible extension, saving as gzip'd xcf\n"));
- 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)) )
- {
- unlink (tmpname);
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
-
- #ifndef G_OS_WIN32
- #ifdef __EMX__
- if (spawn_gzip (filename, tmpname, "-cf", &pid) == -1)
- {
- g_free (tmpname);
- return GIMP_PDB_EXECUTION_ERROR;
- }
- sleep (2); /* silly wait */
- #else /* UNIX */
- /* fork off a gzip process */
- if ((pid = fork ()) < 0)
- {
- g_message ("gz: 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 ("gz: 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 ("gz: dup2 failed: %s\n", g_strerror (errno));
-
- /* and gzip into it */
- execlp ("gzip", "gzip", "-cf", tmpname, NULL);
- g_message ("gz: exec failed: gzip: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit(127);
- }
- else
- {
- wpid = waitpid (pid, &process_status, 0);
-
- if ((wpid < 0)
- || !WIFEXITED (process_status)
- || (WEXITSTATUS (process_status) != 0))
- {
- g_message ("gz: gzip exited abnormally on file %s\n", tmpname);
- g_free (tmpname);
- return 0;
- }
- }
- #endif
- #else /* G_OS_WIN32 */
- in = fopen (tmpname, "rb");
- out = fopen (filename, "wb");
-
- startupinfo.cb = sizeof (STARTUPINFO);
- startupinfo.lpReserved = NULL;
- startupinfo.lpDesktop = NULL;
- startupinfo.lpTitle = NULL;
- startupinfo.dwFlags =
- STARTF_FORCEOFFFEEDBACK | STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
- startupinfo.wShowWindow = SW_SHOWMINNOACTIVE;
- startupinfo.cbReserved2 = 0;
- startupinfo.lpReserved2 = NULL;
- startupinfo.hStdInput = (HANDLE) _get_osfhandle (fileno (in));
- startupinfo.hStdOutput = (HANDLE) _get_osfhandle (fileno (out));
- startupinfo.hStdError = GetStdHandle (STD_ERROR_HANDLE);
-
- if (!CreateProcess (NULL, "minigzip", NULL, NULL,
- TRUE, NORMAL_PRIORITY_CLASS, NULL, NULL,
- &startupinfo, &processinfo))
- {
- g_message ("gz: CreateProcess failed. Minigzip.exe not in the ?\n");
- g_free (tmpname);
- _exit (127);
- }
- CloseHandle (processinfo.hThread);
- WaitForSingleObject (processinfo.hProcess, INFINITE);
- #endif /* G_OS_WIN32 */
-
- 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;
- #ifndef G_OS_WIN32
- gint pid;
- gint wpid;
- gint process_status;
- #else
- FILE *in, *out;
- SECURITY_ATTRIBUTES secattr;
- STARTUPINFO startupinfo;
- PROCESS_INFORMATION processinfo;
- #endif
-
- if (NULL == (ext = find_extension (filename)))
- {
- g_message (_("gz: no sensible extension, attempting to load with file magic\n"));
- }
-
- /* find a temp name */
- tmpname = gimp_temp_name (ext + 1);
-
- #ifndef G_OS_WIN32
- #ifdef __EMX__
- if (spawn_gzip (tmpname, filename, "-cfd", &pid) == -1)
- {
- g_free (tmpname);
- *status = GIMP_PDB_EXECUTION_ERROR;
- return -1;
- }
- #else /* UNIX */
- /* fork off a g(un)zip and wait for it */
- if ((pid = fork ()) < 0)
- {
- g_message ("gz: 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 ("gz: 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_free (tmpname);
- g_message ("gz: dup2 failed: %s\n", g_strerror (errno));
- }
-
- /* and unzip into it */
- execlp ("gzip", "gzip", "-cfd", filename, NULL);
- g_message ("gz: exec failed: gunzip: %s\n", g_strerror (errno));
- g_free (tmpname);
- _exit(127);
- }
- else /* parent process */
- {
- wpid = waitpid (pid, &process_status, 0);
-
- if ((wpid < 0)
- || !WIFEXITED (process_status)
- || (WEXITSTATUS (process_status) != 0))
- {
- g_message ("gz: gzip exited abnormally on file %s\n", filename);
- g_free (tmpname);
- *status = GIMP_PDB_EXECUTION_ERROR;
- return -1;
- }
- }
- #endif
- #else
- in = fopen (filename, "rb");
- out = fopen (tmpname, "wb");
-
- startupinfo.cb = sizeof (STARTUPINFO);
- startupinfo.lpReserved = NULL;
- startupinfo.lpDesktop = NULL;
- startupinfo.lpTitle = NULL;
- startupinfo.dwFlags =
- STARTF_FORCEOFFFEEDBACK | STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
- startupinfo.wShowWindow = SW_SHOWMINNOACTIVE;
- startupinfo.cbReserved2 = 0;
- startupinfo.lpReserved2 = NULL;
- startupinfo.hStdInput = (HANDLE) _get_osfhandle (fileno (in));
- startupinfo.hStdOutput = (HANDLE) _get_osfhandle (fileno (out));
- startupinfo.hStdError = GetStdHandle (STD_ERROR_HANDLE);
-
- if (!CreateProcess (NULL, "minigzip -d", NULL, NULL,
- TRUE, NORMAL_PRIORITY_CLASS, NULL, NULL,
- &startupinfo, &processinfo))
- {
- g_message ("gz: CreateProcess failed: %d\n", GetLastError ());
- g_free (tmpname);
- _exit (127);
- }
- CloseHandle (processinfo.hThread);
- WaitForSingleObject (processinfo.hProcess, INFINITE);
- fclose (in);
- fclose (out);
- #endif /* G_OS_WIN32 */
-
- /* now that we un-gziped 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, ".xcfgz"))
- {
- return ".xcf"; /* we've found it */
- }
- if (0 != strcmp (ext,".gz"))
- {
- return ext;
- }
- else
- {
- /* we found ".gz" so strip it, loop back, and look again */
- *ext = 0;
- ext = strrchr (filename_copy, '.');
- }
- }
- }
-