diff options
Diffstat (limited to 'apps/plugins/textviewer/tv_settings.c')
| -rw-r--r-- | apps/plugins/textviewer/tv_settings.c | 464 |
1 files changed, 464 insertions, 0 deletions
diff --git a/apps/plugins/textviewer/tv_settings.c b/apps/plugins/textviewer/tv_settings.c new file mode 100644 index 0000000..463e6a4 --- /dev/null +++ b/apps/plugins/textviewer/tv_settings.c @@ -0,0 +1,464 @@ +/*************************************************************************** + * __________ __ ___. + * 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 <ctype.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 + * encoding 1 + * scrollbar_mode 1 + * need_scrollbar 1 + * page_mode 1 + * page_number_mode 1 + * title_mode 1 + * scroll_mode 1 + * autoscroll_speed 1 + * font name MAX_PATH + */ +#define GLOBAL_SETTINGS_FILE VIEWERS_DIR "/viewer.dat" + +/* temporary file */ +#define GLOBAL_SETTINGS_TMP_FILE VIEWERS_DIR "/viewer_file.tmp" + +#define GLOBAL_SETTINGS_HEADER "\x54\x56\x47\x53\x31" /* header="TVGS" version=1 */ +#define GLOBAL_SETTINGS_H_SIZE 5 + +/* 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 + * [preferences] + * word_mode 1 + * line_mode 1 + * view_mode 1 + * encoding 1 + * scrollbar_mode 1 + * need_scrollbar 1 + * 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 SETTINGS_FILE VIEWERS_DIR "/viewer_file.dat" + +/* temporary file */ +#define SETTINGS_TMP_FILE VIEWERS_DIR "/viewer_file.tmp" + +#define SETTINGS_HEADER "\x54\x56\x53\x32" /* header="TVS" version=2 */ +#define SETTINGS_H_SIZE 4 + +#ifndef HAVE_LCD_BITMAP +#define BOOKMARK_ICON "\xee\x84\x81\x00" +#endif + +#define PREFERENCES_SIZE (11 + MAX_PATH) + + +struct preferences prefs; +struct preferences old_prefs; + +static int fd; +static const char *file_name; +static int cline = 1; +static int cpage = 1; +static int lpage = 0; + +static void viewer_default_preferences(void) +{ + prefs.word_mode = WRAP; + prefs.line_mode = NORMAL; + prefs.view_mode = NARROW; + prefs.scroll_mode = PAGE; + prefs.page_mode = NO_OVERLAP; + prefs.scrollbar_mode = SB_OFF; + rb->memset(prefs.font, 0, MAX_PATH); +#ifdef HAVE_LCD_BITMAP + prefs.header_mode = HD_BOTH; + prefs.footer_mode = FT_BOTH; + rb->snprintf(prefs.font, MAX_PATH, "%s", rb->global_settings->font_file); +#else + prefs.header_mode = HD_NONE; + prefs.footer_mode = FT_NONE; +#endif + prefs.autoscroll_speed = 1; + /* Set codepage to system default */ + prefs.encoding = rb->global_settings->default_codepage; +} + +static bool viewer_read_preferences(int pfd) +{ + unsigned char buf[PREFERENCES_SIZE]; + unsigned char *p = buf; + + if (rb->read(pfd, buf, sizeof(buf)) != sizeof(buf)) + return false; + + prefs.word_mode = *p++; + prefs.line_mode = *p++; + prefs.view_mode = *p++; + prefs.encoding = *p++; + prefs.scrollbar_mode = *p++; + prefs.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, p, MAX_PATH); + + return true; +} + +static bool viewer_write_preferences(int pfd) +{ + unsigned char buf[PREFERENCES_SIZE]; + unsigned char *p = buf; + + *p++ = prefs.word_mode; + *p++ = prefs.line_mode; + *p++ = prefs.view_mode; + *p++ = prefs.encoding; + *p++ = prefs.scrollbar_mode; + *p++ = prefs.need_scrollbar; + *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, MAX_PATH); + + return (rb->write(pfd, buf, sizeof(buf)) == sizeof(buf)); +} + +static bool viewer_load_global_settings(void) +{ + unsigned buf[GLOBAL_SETTINGS_H_SIZE]; + int sfd = rb->open(GLOBAL_SETTINGS_FILE, O_RDONLY); + + if (sfd < 0) + return false; + + if ((rb->read(sfd, buf, GLOBAL_SETTINGS_H_SIZE) != GLOBAL_SETTINGS_H_SIZE) || + rb->memcmp(buf, GLOBAL_SETTINGS_HEADER, GLOBAL_SETTINGS_H_SIZE) || + !viewer_read_preferences(sfd)) + { + rb->close(sfd); + return false; + } + rb->close(sfd); + return true; +} + +static bool viewer_save_global_settings(void) +{ + int sfd = rb->open(GLOBAL_SETTINGS_TMP_FILE, O_WRONLY|O_CREAT|O_TRUNC); + + if (sfd < 0) + return false; + + if (rb->write(sfd, &GLOBAL_SETTINGS_HEADER, GLOBAL_SETTINGS_H_SIZE) + != GLOBAL_SETTINGS_H_SIZE || + !viewer_write_preferences(sfd)) + { + rb->close(sfd); + rb->remove(GLOBAL_SETTINGS_TMP_FILE); + return false; + } + rb->close(sfd); + rb->remove(GLOBAL_SETTINGS_FILE); + rb->rename(GLOBAL_SETTINGS_TMP_FILE, GLOBAL_SETTINGS_FILE); + return true; +} + +void viewer_load_settings(void) +{ + unsigned char buf[MAX_PATH+2]; + unsigned int fcount; + unsigned int i; + bool res = false; + int sfd; + unsigned int size; + + sfd = rb->open(SETTINGS_FILE, O_RDONLY); + if (sfd < 0) + goto read_end; + + if ((rb->read(sfd, buf, SETTINGS_H_SIZE+2) != SETTINGS_H_SIZE+2) || + rb->memcmp(buf, SETTINGS_HEADER, SETTINGS_H_SIZE)) + { + /* illegal setting file */ + rb->close(sfd); + + if (rb->file_exists(SETTINGS_FILE)) + rb->remove(SETTINGS_FILE); + + goto read_end; + } + + fcount = (buf[SETTINGS_H_SIZE] << 8) | buf[SETTINGS_H_SIZE+1]; + for (i = 0; i < fcount; i++) + { + if (rb->read(sfd, buf, MAX_PATH+2) != MAX_PATH+2) + break; + + size = (buf[MAX_PATH] << 8) | buf[MAX_PATH+1]; + if (rb->strcmp(buf, file_name)) + { + if (rb->lseek(sfd, size, SEEK_CUR) < 0) + break; + continue; + } + if (!viewer_read_preferences(sfd)) + break; + + res = viewer_read_bookmark_infos(sfd); + break; + } + + rb->close(sfd); + +read_end: + if (!res) + { + /* load global settings */ + if (!viewer_load_global_settings()) + viewer_default_preferences(); + + file_pos = 0; + screen_top_ptr = buffer; + cpage = 1; + cline = 1; + bookmark_count = 0; + } + + rb->memcpy(&old_prefs, &prefs, sizeof(struct preferences)); + calc_max_width(); + + if (bookmark_count > 1) + viewer_select_bookmark(-1); + else if (bookmark_count == 1) + { + int screen_pos; + int screen_top; + + screen_pos = bookmarks[0].file_position; + screen_top = screen_pos % buffer_size; + file_pos = screen_pos - screen_top; + screen_top_ptr = buffer + screen_top; + cpage = bookmarks[0].page; + cline = bookmarks[0].line; + } + + viewer_remove_last_read_bookmark(); + + check_bom(); + get_filesize(); + + buffer_end = BUFFER_END(); /* Update whenever file_pos changes */ + + if (BUFFER_OOB(screen_top_ptr)) + screen_top_ptr = buffer; + + fill_buffer(file_pos, buffer, buffer_size); + if (prefs.scroll_mode == PAGE && cline > 1) + viewer_scroll_to_top_line(); + + /* remember the current position */ + start_position = file_pos + screen_top_ptr - buffer; + +#ifdef HAVE_LCD_BITMAP + if (rb->strcmp(prefs.font, rb->global_settings->font_file)) + change_font(prefs.font); + + init_need_scrollbar(); + init_header_and_footer(); +#endif +} + +bool viewer_save_settings(void) +{ + unsigned char buf[MAX_PATH+2]; + unsigned int fcount = 0; + unsigned int i; + int idx; + int ofd; + int tfd; + off_t first_copy_size = 0; + off_t second_copy_start_pos = 0; + off_t size; + + /* add reading page to bookmarks */ + idx = viewer_find_bookmark(cpage, cline); + if (idx >= 0) + bookmarks[idx].flag |= BOOKMARK_LAST; + else + { + viewer_add_bookmark(cpage, cline); + bookmarks[bookmark_count-1].flag = BOOKMARK_LAST; + } + + tfd = rb->open(SETTINGS_TMP_FILE, O_WRONLY|O_CREAT|O_TRUNC); + if (tfd < 0) + return false; + + ofd = rb->open(SETTINGS_FILE, O_RDWR); + if (ofd >= 0) + { + if ((rb->read(ofd, buf, SETTINGS_H_SIZE+2) != SETTINGS_H_SIZE+2) || + rb->memcmp(buf, SETTINGS_HEADER, SETTINGS_H_SIZE)) + { + rb->close(ofd); + goto save_err; + } + fcount = (buf[SETTINGS_H_SIZE] << 8) | buf[SETTINGS_H_SIZE+1]; + + for (i = 0; i < fcount; i++) + { + if (rb->read(ofd, buf, MAX_PATH+2) != MAX_PATH+2) + { + rb->close(ofd); + goto save_err; + } + size = (buf[MAX_PATH] << 8) | buf[MAX_PATH+1]; + if (rb->strcmp(buf, file_name)) + { + if (rb->lseek(ofd, size, SEEK_CUR) < 0) + { + rb->close(ofd); + goto save_err; + } + } + else + { + first_copy_size = rb->lseek(ofd, 0, SEEK_CUR); + if (first_copy_size < 0) + { + rb->close(ofd); + goto save_err; + } + second_copy_start_pos = first_copy_size + size; + first_copy_size -= MAX_PATH+2; + fcount--; + break; + } + } + if (first_copy_size == 0) + first_copy_size = rb->filesize(ofd); + + if (!copy_bookmark_file(ofd, tfd, 0, first_copy_size)) + { + rb->close(ofd); + goto save_err; + } + if (second_copy_start_pos > 0) + { + if (!copy_bookmark_file(ofd, tfd, second_copy_start_pos, + rb->filesize(ofd) - second_copy_start_pos)) + { + rb->close(ofd); + goto save_err; + } + } + rb->close(ofd); + } + else + { + rb->memcpy(buf, SETTINGS_HEADER, SETTINGS_H_SIZE); + buf[SETTINGS_H_SIZE] = 0; + buf[SETTINGS_H_SIZE+1] = 0; + if (rb->write(tfd, buf, SETTINGS_H_SIZE+2) != SETTINGS_H_SIZE+2) + goto save_err; + } + + /* copy to current read file's bookmarks */ + rb->memset(buf, 0, MAX_PATH); + rb->snprintf(buf, MAX_PATH, "%s", file_name); + + size = PREFERENCES_SIZE + bookmark_count * BOOKMARK_SIZE + 1; + buf[MAX_PATH] = size >> 8; + buf[MAX_PATH+1] = size; + + if (rb->write(tfd, buf, MAX_PATH+2) != MAX_PATH+2) + goto save_err; + + if (!viewer_write_preferences(tfd)) + goto save_err; + + if (!viewer_write_bookmark_infos(tfd)) + goto save_err; + + if (rb->lseek(tfd, SETTINGS_H_SIZE, SEEK_SET) < 0) + goto save_err; + + fcount++; + buf[0] = fcount >> 8; + buf[1] = fcount; + + if (rb->write(tfd, buf, 2) != 2) + goto save_err; + + rb->close(tfd); + + rb->remove(SETTINGS_FILE); + rb->rename(SETTINGS_TMP_FILE, SETTINGS_FILE); + + return true; + +save_err: + rb->close(tfd); + rb->remove(SETTINGS_TMP_FILE); + return false; +} |