1 files changed, 519 insertions, 0 deletions

diff --git a/apps/plugins/text_viewer/tv_settings.c b/apps/plugins/text_viewer/tv_settings.c
new file mode 100644
index 0000000000..bb4ead7b5d
--- /dev/null
+++ b/apps/plugins/text_viewer/tv_settings.c
@@ -0,0 +1,519 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Gilles Roux
+ *               2003 Garrett Derner
+ *               2010 Yoshihisa Uchida
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "plugin.h"
+#include "tv_bookmark.h"
+#include "tv_reader.h"
+#include "tv_settings.h"
+
+/* global settings file
+ * binary file, so dont use .cfg
+ *
+ * setting file format
+ *
+ * part                byte count
+ * --------------------------------
+ * 'TVGS'               4
+ * version              1
+ * word_mode            1
+ * line_mode            1
+ * view_mode            1
+ * alignment            1
+ * encoding             1
+ * scrollbar_mode       1
+ * (unused)             1 (for compatibility)
+ * page_mode            1
+ * page_number_mode     1
+ * title_mode           1
+ * scroll_mode          1
+ * autoscroll_speed     1
+ * font name            MAX_PATH
+ */
+
+#define VIEWER_GLOBAL_SETTINGS_FILE      VIEWERS_DIR "/viewer.dat"
+#define TV_GLOBAL_SETTINGS_FILE          VIEWERS_DIR "/tv_global.dat"
+
+#define TV_GLOBAL_SETTINGS_HEADER        "\x54\x56\x47\x53" /* "TVGS" */
+#define TV_GLOBAL_SETTINGS_VERSION       0x32
+#define TV_GLOBAL_SETTINGS_HEADER_SIZE   5
+#define TV_GLOBAL_SETTINGS_FIRST_VERSION 0x31
+
+/* preferences and bookmarks at each file
+ * binary file, so dont use .cfg
+ *
+ * setting file format
+ *
+ * part                byte count
+ * --------------------------------
+ * 'TVS'                3
+ * version              1
+ * file count           2
+ * [1st file]
+ *   file path          MAX_PATH
+ *   next file pos      2 (prefences size + bookmark count * bookmark size + 1)
+ *   [preferences]
+ *     word_mode        1
+ *     line_mode        1
+ *     view_mode        1
+ *     alignment        1
+ *     encoding         1
+ *     scrollbar_mode   1
+ *     (unused)         1 (for compatibility)
+ *     page_mode        1
+ *     header_mode      1
+ *     footer_mode      1
+ *     scroll_mode      1
+ *     autoscroll_speed 1
+ *     font name        MAX_PATH
+ *   bookmark count     1
+ *   [1st bookmark]
+ *     file_position    4
+ *     page             2
+ *     line             1
+ *     flag             1
+ *   [2nd bookmark]
+ *   ...
+ *   [last bookmark]
+ * [2nd file]
+ * ...
+ * [last file]
+ */
+#define VIEWER_SETTINGS_FILE      VIEWERS_DIR "/viewer_file.dat"
+#define TV_SETTINGS_FILE          VIEWERS_DIR "/tv_file.dat"
+
+/* temporary file */
+#define TV_SETTINGS_TMP_FILE      VIEWERS_DIR "/tv_file.tmp"
+
+#define TV_SETTINGS_HEADER        "\x54\x56\x53" /* "TVS" */
+#define TV_SETTINGS_VERSION       0x33
+#define TV_SETTINGS_HEADER_SIZE   4
+#define TV_SETTINGS_FIRST_VERSION 0x32
+
+#define TV_PREFERENCES_SIZE    (12 + MAX_PATH)
+
+/* ----------------------------------------------------------------------------
+ * read/write the preferences
+ * ----------------------------------------------------------------------------
+ */
+
+static bool tv_read_preferences(int pfd, int version, struct tv_preferences *prefs)
+{
+    unsigned char buf[TV_PREFERENCES_SIZE];
+    const unsigned char *p = buf;
+    int read_size = TV_PREFERENCES_SIZE;
+
+    if (version == 0)
+        read_size--;
+
+    if (rb->read(pfd, buf, read_size) < 0)
+        return false;
+
+    prefs->word_mode        = *p++;
+    prefs->line_mode        = *p++;
+    prefs->view_mode        = *p++;
+    if (version > 0)
+        prefs->alignment = *p++;
+    else
+        prefs->alignment = LEFT;
+    prefs->encoding         = *p++;
+    prefs->scrollbar_mode   = *p++;
+    /* skip need_scrollbar */
+    p++;
+    prefs->page_mode        = *p++;
+    prefs->header_mode      = *p++;
+    prefs->footer_mode      = *p++;
+    prefs->scroll_mode      = *p++;
+    prefs->autoscroll_speed = *p++;
+    rb->memcpy(prefs->font_name, p, MAX_PATH);
+#ifdef HAVE_LCD_BITMAP
+    prefs->font = rb->font_get(FONT_UI);
+#endif
+
+    return true;
+}
+
+static bool tv_write_preferences(int pfd, const struct tv_preferences *prefs)
+{
+    unsigned char buf[TV_PREFERENCES_SIZE];
+    unsigned char *p = buf;
+
+    *p++ = prefs->word_mode;
+    *p++ = prefs->line_mode;
+    *p++ = prefs->view_mode;
+    *p++ = prefs->alignment;
+    *p++ = prefs->encoding;
+    *p++ = prefs->scrollbar_mode;
+    /* skip need_scrollbar */
+    p++;
+    *p++ = prefs->page_mode;
+    *p++ = prefs->header_mode;
+    *p++ = prefs->footer_mode;
+    *p++ = prefs->scroll_mode;
+    *p++ = prefs->autoscroll_speed;
+    rb->memcpy(p, prefs->font_name, MAX_PATH);
+
+    return (rb->write(pfd, buf, TV_PREFERENCES_SIZE) >= 0);
+}
+
+/* ----------------------------------------------------------------------------
+ * convert vewer.rock's settings file to text_viewer.rock's settings file
+ * ----------------------------------------------------------------------------
+ */
+
+static bool tv_convert_settings(int sfd, int dfd, int old_ver)
+{
+    struct tv_preferences new_prefs;
+    off_t old_pos;
+    off_t new_pos;
+    unsigned char buf[MAX_PATH + 2];
+    int settings_size;
+
+    rb->read(sfd, buf, MAX_PATH + 2);
+    rb->write(dfd, buf, MAX_PATH + 2);
+
+    settings_size = (buf[MAX_PATH] << 8) | buf[MAX_PATH + 1];
+
+    old_pos = rb->lseek(sfd, 0, SEEK_CUR);
+    new_pos = rb->lseek(dfd, 0, SEEK_CUR);
+
+    /*
+     * when the settings size != preferences size + bookmarks size,
+     * settings data are considered to be old version.
+     */
+    if (old_ver > 0 && ((settings_size - TV_PREFERENCES_SIZE) % 8) == 0)
+        old_ver = 0;
+
+    if (!tv_read_preferences(sfd, old_ver, &new_prefs))
+        return false;
+
+    if (!tv_write_preferences(dfd, &new_prefs))
+        return false;
+
+    settings_size -= (rb->lseek(sfd, 0, SEEK_CUR) - old_pos);
+
+    if (settings_size > 0)
+    {
+        rb->read(sfd, buf, settings_size);
+        rb->write(dfd, buf, settings_size);
+    }
+
+    settings_size = rb->lseek(dfd, 0, SEEK_CUR) - new_pos;
+    buf[0] = settings_size >> 8;
+    buf[1] = settings_size;
+    rb->lseek(dfd, new_pos - 2, SEEK_SET);
+    rb->write(dfd, buf, 2);
+    rb->lseek(dfd, settings_size, SEEK_CUR);
+    return true;
+}
+
+static void tv_convert_settings_file(void)
+{
+    unsigned char buf[TV_SETTINGS_HEADER_SIZE + 2];
+    int sfd;
+    int tfd;
+    int i;
+    int fcount;
+    int version;
+    bool res = false;
+
+    if ((sfd = rb->open(VIEWER_SETTINGS_FILE, O_RDONLY)) < 0)
+        return;
+
+    if ((tfd = rb->open(TV_SETTINGS_TMP_FILE, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
+    {
+        rb->close(sfd);
+        return;
+    }
+
+    if (rb->read(sfd, buf, TV_SETTINGS_HEADER_SIZE + 2) >= 0)
+    {
+        version = buf[TV_SETTINGS_HEADER_SIZE - 1] - TV_SETTINGS_FIRST_VERSION;
+        fcount  = (buf[TV_SETTINGS_HEADER_SIZE] << 8) | buf[TV_SETTINGS_HEADER_SIZE + 1];
+        buf[TV_SETTINGS_HEADER_SIZE - 1] = TV_SETTINGS_VERSION;
+
+        if (rb->write(tfd, buf, TV_SETTINGS_HEADER_SIZE + 2) >= 0)
+        {
+            res = true;
+            for (i = 0; i < fcount; i++)
+            {
+                if (!tv_convert_settings(sfd, tfd, version))
+                {
+                    res = false;
+                    break;
+                }
+            }
+        }
+    }
+
+    rb->close(sfd);
+    rb->close(tfd);
+
+    if (res)
+        rb->rename(TV_SETTINGS_TMP_FILE, TV_SETTINGS_FILE);
+    else
+        rb->remove(TV_SETTINGS_TMP_FILE);
+
+    return;
+}
+
+/* ----------------------------------------------------------------------------
+ * load/save the global settings
+ * ----------------------------------------------------------------------------
+ */
+
+bool tv_load_global_settings(struct tv_preferences *prefs)
+{
+    unsigned char buf[TV_GLOBAL_SETTINGS_HEADER_SIZE];
+    int fd;
+    int version;
+    bool res = false;
+
+    /*
+     * the viewer.rock's setting file read when the text_viewer.rock's setting file
+     * does not read.
+     */
+    if ((fd = rb->open(TV_GLOBAL_SETTINGS_FILE, O_RDONLY)) < 0)
+        fd = rb->open(VIEWER_GLOBAL_SETTINGS_FILE, O_RDONLY);
+
+    if (fd >= 0)
+    {
+        if ((rb->read(fd, buf, TV_GLOBAL_SETTINGS_HEADER_SIZE) > 0) &&
+            (rb->memcmp(buf, TV_GLOBAL_SETTINGS_HEADER, TV_GLOBAL_SETTINGS_HEADER_SIZE - 1) == 0))
+        {
+            version = buf[TV_GLOBAL_SETTINGS_HEADER_SIZE - 1] - TV_GLOBAL_SETTINGS_FIRST_VERSION;
+            res = tv_read_preferences(fd, version, prefs);
+        }
+        rb->close(fd);
+    }
+    return res;
+}
+
+bool tv_save_global_settings(const struct tv_preferences *prefs)
+{
+    unsigned char buf[TV_GLOBAL_SETTINGS_HEADER_SIZE];
+    int fd;
+    bool res;
+
+    if ((fd = rb->open(TV_SETTINGS_TMP_FILE, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
+         return false;
+
+    rb->memcpy(buf, TV_GLOBAL_SETTINGS_HEADER, TV_GLOBAL_SETTINGS_HEADER_SIZE - 1);
+    buf[TV_GLOBAL_SETTINGS_HEADER_SIZE - 1] = TV_GLOBAL_SETTINGS_VERSION;
+
+    res = (rb->write(fd, buf, TV_GLOBAL_SETTINGS_HEADER_SIZE) >= 0) &&
+          (tv_write_preferences(fd, prefs));
+    rb->close(fd);
+
+    if (res)
+    {
+        rb->remove(TV_GLOBAL_SETTINGS_FILE);
+        rb->rename(TV_SETTINGS_TMP_FILE, TV_GLOBAL_SETTINGS_FILE);
+    }
+    else
+        rb->remove(TV_SETTINGS_TMP_FILE);
+
+    return res;
+}
+
+/* ----------------------------------------------------------------------------
+ * load/save the settings
+ * ----------------------------------------------------------------------------
+ */
+
+void tv_load_settings(const unsigned char *file_name)
+{
+    unsigned char buf[MAX_PATH+2];
+    unsigned int fcount;
+    unsigned int i;
+    bool res = false;
+    int fd;
+    int version;
+    unsigned int size;
+    struct tv_preferences prefs;
+
+    if (!rb->file_exists(TV_SETTINGS_FILE))
+        tv_convert_settings_file();
+
+    if ((fd = rb->open(TV_SETTINGS_FILE, O_RDONLY)) >= 0)
+    {
+        if ((rb->read(fd, buf, TV_SETTINGS_HEADER_SIZE + 2) >= 0) &&
+            (rb->memcmp(buf, TV_SETTINGS_HEADER, TV_SETTINGS_HEADER_SIZE - 1) == 0))
+        {
+            version = buf[TV_SETTINGS_HEADER_SIZE - 1] - TV_SETTINGS_FIRST_VERSION;
+            fcount = (buf[TV_SETTINGS_HEADER_SIZE] << 8) | buf[TV_SETTINGS_HEADER_SIZE+1];
+
+            for (i = 0; i < fcount; i++)
+            {
+                if (rb->read(fd, buf, MAX_PATH+2) >= 0)
+                {
+                    size = (buf[MAX_PATH] << 8) | buf[MAX_PATH+1];
+                    if (rb->strcmp(buf, file_name) == 0)
+                    {
+                        if (tv_read_preferences(fd, version, &prefs))
+                            res = tv_deserialize_bookmarks(fd);
+
+                        break;
+                    }
+                    rb->lseek(fd, size, SEEK_CUR);
+                }
+            }
+            rb->close(fd);
+        }
+        else
+        {
+            /* when the settings file is illegal, removes it */
+            rb->close(fd);
+            rb->remove(TV_SETTINGS_FILE);
+        }
+    }
+    if (!res)
+    {
+        /* specifications are acquired from the global settings */
+        if (!tv_load_global_settings(&prefs))
+            tv_set_default_preferences(&prefs);
+    }
+    rb->strlcpy(prefs.file_name, file_name, MAX_PATH);
+    tv_set_preferences(&prefs);
+}
+
+static bool tv_copy_settings(int sfd, int dfd, int size)
+{
+    unsigned char buf[MAX_PATH];
+    int i = size / MAX_PATH;
+
+    size %= MAX_PATH;
+
+    while (i--)
+    {
+        if ((rb->read(sfd, buf, MAX_PATH) < 0) || (rb->write(dfd, buf, MAX_PATH) < 0))
+            return false;
+    }
+
+    return ((rb->read(sfd, buf, size) >= 0) && (rb->write(dfd, buf, size) >= 0));
+}
+
+bool tv_save_settings(void)
+{
+    const struct tv_preferences *prefs = tv_get_preferences();
+    unsigned char buf[MAX_PATH+2];
+    unsigned int fcount = 0;
+    unsigned int i;
+    int ofd = -1;
+    int tfd;
+    off_t size;
+    bool res = true;
+
+    /* add reading page to bookmarks */
+    tv_create_system_bookmark();
+
+    if (!rb->file_exists(TV_SETTINGS_FILE))
+        tv_convert_settings_file();
+
+    /* create header for the temporary file */
+    rb->memcpy(buf, TV_SETTINGS_HEADER, TV_SETTINGS_HEADER_SIZE - 1);
+    buf[TV_SETTINGS_HEADER_SIZE - 1] = TV_SETTINGS_VERSION;
+
+    if ((tfd = rb->open(TV_SETTINGS_TMP_FILE, O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
+        return false;
+
+    if (rb->write(tfd, buf, TV_SETTINGS_HEADER_SIZE + 2) < 0)
+    {
+        rb->close(tfd);
+        return false;
+    }
+
+    if ((ofd = rb->open(TV_SETTINGS_FILE, O_RDONLY)) >= 0)
+    {
+        res = ((rb->read(ofd, buf, TV_SETTINGS_HEADER_SIZE + 2) >= 0) &&
+               (rb->memcmp(buf, TV_SETTINGS_HEADER, TV_SETTINGS_HEADER_SIZE - 1) == 0));
+
+        if (res)
+        {
+            fcount = (buf[TV_SETTINGS_HEADER_SIZE] << 8) | buf[TV_SETTINGS_HEADER_SIZE + 1];
+            for (i = 0; i < fcount; i++)
+            {
+                if (rb->read(ofd, buf, MAX_PATH + 2) < 0)
+                {
+                    res = false;
+                    break;
+                }
+
+                size = (buf[MAX_PATH] << 8) | buf[MAX_PATH + 1];
+                if (rb->strcmp(buf, prefs->file_name) == 0)
+                    rb->lseek(ofd, size, SEEK_CUR);
+                else
+                {
+                    if ((rb->write(tfd, buf, MAX_PATH + 2) < 0) ||
+                        (!tv_copy_settings(ofd, tfd, size)))
+                    {
+                        res = false;
+                        break;
+                    }
+                }
+            }
+        }
+        rb->close(ofd);
+    }
+
+    if (res)
+    {
+        /* save to current read file's preferences and bookmarks */
+        res = false;
+        rb->memset(buf, 0, MAX_PATH);
+        rb->strlcpy(buf, prefs->file_name, MAX_PATH);
+
+        if (rb->write(tfd, buf, MAX_PATH + 2) >= 0)
+        {
+            if (tv_write_preferences(tfd, prefs))
+            {
+                size = tv_serialize_bookmarks(tfd);
+                if (size > 0)
+                {
+                    size += TV_PREFERENCES_SIZE;
+                    rb->lseek(tfd, -size - 2, SEEK_CUR);
+                    buf[0] = size >> 8;
+                    buf[1] = size;
+                    if (rb->write(tfd, buf, 2) >= 0)
+                    {
+                        rb->lseek(tfd, TV_SETTINGS_HEADER_SIZE, SEEK_SET);
+
+                        fcount++;
+                        buf[0] = fcount >> 8;
+                        buf[1] = fcount;
+                        res = (rb->write(tfd, buf, 2) >= 0);
+                    }
+                }
+            }
+        }
+    }
+    rb->close(tfd);
+
+    if (res)
+    {
+        rb->remove(TV_SETTINGS_FILE);
+        rb->rename(TV_SETTINGS_TMP_FILE, TV_SETTINGS_FILE);
+    }
+    else
+        rb->remove(TV_SETTINGS_TMP_FILE);
+
+    return res;
+}