#include <unistd.h>
#include <string.h>
#include <glib/gi18n-lib.h>
+#include <glib/gstdio.h>
#include <gio/gio.h>
#include <sys/wait.h>
#include <stdlib.h>
+#include <errno.h>
#include "comics-document.h"
#include "ev-document-misc.h"
{
GObject parent_instance;
- gchar *archive;
- GSList *page_names;
- int n_pages;
- char *extract_command;
- gboolean regex_arg;
+ gchar *archive, *dir;
+ GSList *page_names;
+ gint n_pages;
+ gchar *selected_command;
+ gchar *extract_command, *list_command;
+ gboolean regex_arg, flag_temp, flag_FLOSS;
};
typedef struct _ComicsDocumentClass ComicsDocumentClass;
return ret;
}
+/* This function manages the command for decompressing a comic book */
+static gboolean
+comics_decompress_temp_dir (const gchar *command_decompress_tmp,
+ const gchar *command,
+ GError **error)
+{
+ gboolean success;
+ gchar *std_out;
+ GError *err = NULL;
+ gint retval;
+
+ success = g_spawn_command_line_sync (command_decompress_tmp, &std_out,
+ NULL, &retval, &err);
+ if (!success) {
+ g_set_error (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("Error launching the %s command for decompressing \
+ the comic book to the temporary directory -- %s."),
+ g_path_get_basename (command),
+ err->message);
+ g_error_free (err);
+ } else if (WIFEXITED (retval)) {
+ if (WEXITSTATUS (retval) == EXIT_SUCCESS) {
+ g_free (std_out);
+ return TRUE;
+ } else {
+ g_set_error (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("The command %s failed at decompressing the \
+ comic book in to temporary directory."),
+ g_path_get_basename (command));
+ g_warning ("%s output: %s", g_path_get_basename
+ (command), std_out);
+ g_free (std_out);
+ }
+ } else {
+ g_set_error (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("The command %s does not end normally."),
+ g_path_get_basename (command));
+ g_free (std_out);
+ }
+
+ return FALSE;
+}
+
+/* This function shows how to use the choosen command for decompressing a
+ * comic book file. It modifies fields of the ComicsDocument struct with
+ * this information */
+static gboolean
+comics_generate_command_lines (ComicsDocument *comics_document,
+ GError **error)
+{
+ gchar *quoted_file;
+ gchar *command_decompress_tmp;
+
+ quoted_file = g_shell_quote (comics_document->archive);
+
+ /* RARLabs software */
+ if (g_str_has_suffix (comics_document->selected_command, "unrar") &&
+ !comics_document->flag_FLOSS) {
+ comics_document->extract_command =
+ g_strdup_printf ("%s p -c- -ierr",
+ comics_document->selected_command);
+ comics_document->list_command =
+ g_strdup_printf ("%s vb -c- -- %s",
+ comics_document->selected_command, quoted_file);
+ comics_document->flag_temp = FALSE;
+ comics_document->regex_arg = FALSE;
+ g_free (quoted_file);
+ return TRUE;
+ }
+
+ /* Gna! unrar */
+ if (g_str_has_suffix (comics_document->selected_command, "unrar-free")
+ || (g_str_has_suffix (comics_document->selected_command,
+ "unrar") && comics_document->flag_FLOSS)) {
+
+ comics_document->flag_temp = TRUE;
+
+ comics_document->dir = g_build_filename (ev_tmp_dir (),
+ g_compute_checksum_for_string (G_CHECKSUM_MD5,
+ comics_document->archive, -1), NULL);
+
+ /* unrar-free can't create directories so we do it on its
+ * behalf */
+ if (g_mkdir_with_parents (comics_document->dir, 0700) != 0) {
+ g_set_error (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("Failed to create a directory on the \
+ temporary directory."));
+ g_warning ("Failed to create directory %s: %s",
+ comics_document->dir, g_strerror (errno));
+ g_free (quoted_file);
+ return FALSE;
+ }
+
+ command_decompress_tmp = g_strdup_printf ( "%s -xf %s %s",
+ comics_document->selected_command,
+ quoted_file,
+ comics_document->dir);
+
+ if (!comics_decompress_temp_dir (command_decompress_tmp,
+ comics_document->selected_command,
+ error)){
+ g_free (command_decompress_tmp);
+ g_free (quoted_file);
+ return FALSE;
+ } else {
+ comics_document->list_command =
+ g_strdup_printf ("%s t %s",
+ comics_document->selected_command,
+ quoted_file);
+ comics_document->regex_arg = TRUE;
+ g_free (command_decompress_tmp);
+ g_free (quoted_file);
+ return TRUE;
+ }
+ }
+
+ /* InfoZIP's unzip */
+ if (g_str_has_suffix (comics_document->selected_command,"unzip")) {
+ comics_document->extract_command =
+ g_strdup_printf ("%s -p -C",
+ comics_document->selected_command);
+ comics_document->list_command =
+ g_strdup_printf ("%s -Z -1 -- %s",
+ comics_document->selected_command,
+ quoted_file);
+ comics_document->flag_temp = FALSE;
+ comics_document->regex_arg = TRUE;
+ g_free (quoted_file);
+ return TRUE;
+ }
+
+ /* p7zip */
+ if (g_str_has_suffix (comics_document->selected_command,"7zr")) {
+ comics_document->extract_command =
+ g_strdup_printf ("%s x -so",
+ comics_document->selected_command);
+ comics_document->list_command =
+ g_strdup_printf ("%s l -- %s",
+ comics_document->selected_command,
+ quoted_file);
+ comics_document->flag_temp = FALSE;
+ comics_document->regex_arg = TRUE;
+ g_free (quoted_file);
+ return TRUE;
+
+ }
+ /* You are not supposed to get here ! */
+ g_set_error_literal (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("Internal error configuring the command for decompressing \
+ the comic book file"));
+ g_free (quoted_file);
+ return FALSE;
+}
+
+/* This function chooses an external command for decompressing a comic
+ * book based on its mime tipe. */
+static gboolean
+comics_check_decompress_command (gchar *mime_type,
+ ComicsDocument *comics_document,
+ GError **error)
+{
+ gboolean success;
+ gchar *std_out, *std_err;
+ gint retval;
+ GError *err = NULL;
+
+ /* FIXME, use proper cbr/cbz mime types once they're
+ * included in shared-mime-info */
+
+ if (!strcmp (mime_type, "application/x-cbr") ||
+ !strcmp (mime_type, "application/x-rar")) {
+ /* The RARLAB provides a no-charge proprietary (freeware)
+ * decompress-only client for Linux called unrar. Another
+ * option is a GPLv2-licensed command-line tool developed by
+ * the Gna! project. Confusingly enough, the free software RAR
+ * decoder is also named unrar. For this reason we need to add
+ * some lines for disambiguation. Sorry for the added the
+ * complexity but it's life :)
+ * Finally, some distributions, like Debian, rename this free
+ * option as unrar-free.
+ * */
+ comics_document->selected_command =
+ g_find_program_in_path ("unrar");
+ if (comics_document->selected_command) {
+ /* We only use std_err to avoid printing useless error
+ * messages on the terminal */
+ success = g_spawn_command_line_sync (
+ comics_document->selected_command,
+ &std_out, &std_err, &retval, &err);
+ if (!success) {
+ g_propagate_error (error, err);
+ g_error_free (err);
+ return FALSE;
+ /* I don't check retval status because RARLAB unrar
+ * doesn't have a way to return 0 without involving an
+ * operation with a file*/
+ } else if (WIFEXITED (retval)) {
+ if (g_strrstr (std_out,"freeware") != NULL)
+ /* The RARLAB freeware client */
+ comics_document->flag_FLOSS = FALSE;
+ else
+ /* The Gna! free software client */
+ comics_document->flag_FLOSS = TRUE;
+ g_free (std_out);
+ g_free (std_err);
+ return TRUE;
+ }
+ }
+ /* The Gna! free software client with Debian naming convention */
+ comics_document->selected_command =
+ g_find_program_in_path ("unrar-free");
+ if (comics_document->selected_command)
+ return TRUE;
+ } else if (!strcmp (mime_type, "application/x-cbz") ||
+ !strcmp (mime_type, "application/zip")) {
+ /* InfoZIP's unzip program */
+ comics_document->selected_command =
+ g_find_program_in_path ("unzip");
+ if (comics_document->selected_command)
+ return TRUE;
+ } else if (!strcmp (mime_type, "application/x-cb7") ||
+ !strcmp (mime_type, "application/x-7z-compressed")) {
+ /* 7zr is a light stand-alone executable that supports only
+ * 7z/LZMA/BCJ */
+ comics_document->selected_command =
+ g_find_program_in_path ("7zr");
+ if (comics_document->selected_command)
+ return TRUE;
+ } else {
+ g_set_error (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ _("Not a comic book MIME type: %s"),
+ mime_type);
+ return FALSE;
+ }
+ g_set_error_literal (error,
+ EV_DOCUMENT_ERROR,
+ EV_DOCUMENT_ERROR_INVALID,
+ ("I can't find an appropiate command for \
+ decompressing this type of comic book"));
+ return FALSE;
+}
+
static gboolean
comics_document_load (EvDocument *document,
const char *uri,
{
ComicsDocument *comics_document = COMICS_DOCUMENT (document);
GSList *supported_extensions;
- gchar *list_files_command = NULL, *std_out, *quoted_file;
+ gchar *std_out;
gchar *mime_type;
gchar **cbr_files;
gboolean success;
return FALSE;
}
-
- quoted_file = g_shell_quote (comics_document->archive);
-
- /* FIXME, use proper cbr/cbz mime types once they're
- * included in shared-mime-info */
- if (!strcmp (mime_type, "application/x-cbr") ||
- !strcmp (mime_type, "application/x-rar")) {
- comics_document->extract_command =
- g_strdup ("unrar p -c- -ierr");
- list_files_command =
- g_strdup_printf ("unrar vb -c- -- %s", quoted_file);
- comics_document->regex_arg = FALSE;
- } else if (!strcmp (mime_type, "application/x-cbz") ||
- !strcmp (mime_type, "application/zip")) {
- comics_document->extract_command =
- g_strdup ("unzip -p -C");
- list_files_command =
- g_strdup_printf ("zipinfo -1 -- %s", quoted_file);
- comics_document->regex_arg = TRUE;
- } else if (!strcmp (mime_type, "application/x-cb7")) {
- comics_document->extract_command =
- g_strdup ("7zr x -so");
- list_files_command =
- g_strdup_printf ("7zr l -- %s", quoted_file);
- comics_document->regex_arg = TRUE;
- } else {
- g_set_error (error,
- EV_DOCUMENT_ERROR,
- EV_DOCUMENT_ERROR_INVALID,
- _("Not a comic book MIME type: %s"),
- mime_type);
+
+ if (!comics_check_decompress_command (mime_type, comics_document,
+ error)) {
g_free (mime_type);
- g_free (quoted_file);
+ return FALSE;
+ } else if (!comics_generate_command_lines (comics_document, error)) {
+ g_free (mime_type);
return FALSE;
}
g_free (mime_type);
- g_free (quoted_file);
/* Get list of files in archive */
- success = g_spawn_command_line_sync (list_files_command,
+ success = g_spawn_command_line_sync (comics_document->list_command,
&std_out, NULL, &retval, error);
- g_free (list_files_command);
if (!success) {
return FALSE;
gboolean success, got_size = FALSE;
gint outpipe = -1;
GPid child_pid = -1;
-
- argv = extract_argv (document, page->index);
- success = g_spawn_async_with_pipes (NULL, argv, NULL,
- G_SPAWN_SEARCH_PATH | G_SPAWN_STDERR_TO_DEV_NULL,
- NULL, NULL,
- &child_pid,
- NULL, &outpipe, NULL, NULL);
- g_strfreev (argv);
- g_return_if_fail (success == TRUE);
-
- loader = gdk_pixbuf_loader_new ();
- g_signal_connect (loader, "area-prepared",
- G_CALLBACK (get_page_size_area_prepared_cb),
- &got_size);
-
- while (outpipe >= 0) {
- gssize bytes = read (outpipe, buf, 1024);
+ gssize bytes;
+ GdkPixbuf *pixbuf;
+ gchar *filename;
+ ComicsDocument *comics_document = COMICS_DOCUMENT (document);
+
+ if (!comics_document->flag_temp) {
+
+ argv = extract_argv (document, page->index);
+ success = g_spawn_async_with_pipes (NULL, argv, NULL,
+ G_SPAWN_SEARCH_PATH |
+ G_SPAWN_STDERR_TO_DEV_NULL,
+ NULL, NULL,
+ &child_pid,
+ NULL, &outpipe, NULL, NULL);
+ g_strfreev (argv);
+ g_return_if_fail (success == TRUE);
+
+ loader = gdk_pixbuf_loader_new ();
+ g_signal_connect (loader, "area-prepared",
+ G_CALLBACK (get_page_size_area_prepared_cb),
+ &got_size);
+
+ while (outpipe >= 0) {
+ bytes = read (outpipe, buf, 1024);
- if (bytes > 0)
+ if (bytes > 0)
gdk_pixbuf_loader_write (loader, buf, bytes, NULL);
- if (bytes <= 0 || got_size) {
- close (outpipe);
- outpipe = -1;
- gdk_pixbuf_loader_close (loader, NULL);
+ if (bytes <= 0 || got_size) {
+ close (outpipe);
+ outpipe = -1;
+ gdk_pixbuf_loader_close (loader, NULL);
+ }
+ }
+
+ if (gdk_pixbuf_loader_get_pixbuf (loader)) {
+ pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
+ if (width)
+ *width = gdk_pixbuf_get_width (pixbuf);
+ if (height)
+ *height = gdk_pixbuf_get_height (pixbuf);
}
- }
- if (gdk_pixbuf_loader_get_pixbuf (loader)) {
- GdkPixbuf *pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
+ g_spawn_close_pid (child_pid);
+ g_object_unref (loader);
+ } else {
+ filename = g_build_filename (comics_document->dir,
+ (char*) g_slist_nth_data (
+ comics_document->page_names,
+ page->index),
+ NULL);
+ pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
+ g_free (filename);
if (width)
*width = gdk_pixbuf_get_width (pixbuf);
if (height)
*height = gdk_pixbuf_get_height (pixbuf);
}
-
- g_spawn_close_pid (child_pid);
- g_object_unref (loader);
}
static void
gboolean success;
gint outpipe = -1;
GPid child_pid = -1;
-
- argv = extract_argv (document, rc->page->index);
- success = g_spawn_async_with_pipes (NULL, argv, NULL,
- G_SPAWN_SEARCH_PATH
- | G_SPAWN_STDERR_TO_DEV_NULL,
- NULL, NULL,
- &child_pid,
- NULL, &outpipe, NULL, NULL);
- g_strfreev (argv);
- g_return_val_if_fail (success == TRUE, NULL);
-
- loader = gdk_pixbuf_loader_new ();
- g_signal_connect (loader, "size-prepared",
- G_CALLBACK (render_pixbuf_size_prepared_cb), &rc->scale);
-
- while (outpipe >= 0) {
- gssize bytes = read (outpipe, buf, 4096);
-
- if (bytes > 0) {
- gdk_pixbuf_loader_write (loader, buf, bytes, NULL);
- } else if (bytes <= 0) {
- close (outpipe);
- gdk_pixbuf_loader_close (loader, NULL);
- outpipe = -1;
+ gssize bytes;
+ gint width, height;
+ gchar *filename;
+ ComicsDocument *comics_document = COMICS_DOCUMENT (document);
+
+ if (!comics_document->flag_temp) {
+ argv = extract_argv (document, rc->page->index);
+ success = g_spawn_async_with_pipes (NULL, argv, NULL,
+ G_SPAWN_SEARCH_PATH |
+ G_SPAWN_STDERR_TO_DEV_NULL,
+ NULL, NULL,
+ &child_pid,
+ NULL, &outpipe, NULL, NULL);
+ g_strfreev (argv);
+ g_return_val_if_fail (success == TRUE, NULL);
+
+ loader = gdk_pixbuf_loader_new ();
+ g_signal_connect (loader, "size-prepared",
+ G_CALLBACK (render_pixbuf_size_prepared_cb),
+ &rc->scale);
+
+ while (outpipe >= 0) {
+ bytes = read (outpipe, buf, 4096);
+
+ if (bytes > 0) {
+ gdk_pixbuf_loader_write (loader, buf, bytes,
+ NULL);
+ } else if (bytes <= 0) {
+ close (outpipe);
+ gdk_pixbuf_loader_close (loader, NULL);
+ outpipe = -1;
+ }
}
- }
-
- rotated_pixbuf = gdk_pixbuf_rotate_simple (gdk_pixbuf_loader_get_pixbuf (loader),
- 360 - rc->rotation);
- g_spawn_close_pid (child_pid);
- g_object_unref (loader);
+ rotated_pixbuf = gdk_pixbuf_rotate_simple (
+ gdk_pixbuf_loader_get_pixbuf (loader),
+ 360 - rc->rotation);
+ g_spawn_close_pid (child_pid);
+ g_object_unref (loader);
+ } else {
+ filename = g_build_filename (comics_document->dir,
+ (char*) g_slist_nth_data (
+ comics_document->page_names,
+ rc->page->index ),
+ NULL);
+
+ gdk_pixbuf_get_file_info (filename, &width, &height);
+
+ rotated_pixbuf = gdk_pixbuf_rotate_simple (
+ gdk_pixbuf_new_from_file_at_size (
+ filename,
+ width * (rc->scale) + 0.5,
+ height * (rc->scale) + 0.5,
+ NULL),
+ 360 - rc->rotation);
+ g_free (filename);
+
+ }
return rotated_pixbuf;
}
gdk_pixbuf_loader_set_size (loader, w, h);
}
+/**
+ * comics_remove_dir: Removes a directory recursively.
+ * Returns:
+ * 0 if it was successfully deleted,
+ * -1 if an error occurred
+ */
+static int
+comics_remove_dir (gchar *path_name)
+{
+ GDir *content_dir;
+ const gchar *filename;
+
+ if (g_file_test (path_name, G_FILE_TEST_IS_DIR)) {
+ content_dir = g_dir_open (path_name, 0, NULL);
+ filename = g_dir_read_name (content_dir);
+ while (filename) {
+ comics_remove_dir (g_build_filename (path_name,
+ filename,
+ NULL));
+ filename = g_dir_read_name (content_dir);
+ }
+ g_dir_close (content_dir);
+ }
+ /* Note from g_remove() documentation: on Windows, it is in general not
+ * possible to remove a file that is open to some process, or mapped
+ * into memory.*/
+ return (g_remove (path_name));
+}
+
static void
comics_document_finalize (GObject *object)
{
ComicsDocument *comics_document = COMICS_DOCUMENT (object);
+ if (comics_document->flag_temp) {
+ if (comics_remove_dir (comics_document->dir) == -1)
+ g_warning ("There was a error deleting %s",
+ comics_document->dir);
+ g_free (comics_document->dir);
+ }
+
if (comics_document->archive)
g_free (comics_document->archive);
g_slist_free (comics_document->page_names);
}
+ if (comics_document->selected_command)
+ g_free (comics_document->selected_command);
+
if (comics_document->extract_command)
g_free (comics_document->extract_command);
+
+ if (comics_document->list_command)
+ g_free (comics_document->list_command);
G_OBJECT_CLASS (comics_document_parent_class)->finalize (object);
}
https://www.fi.muni.cz/~kas/git / evince.git / commitdiff