From ffccd5b2b05243e7976db80f90f453dccfae9886 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 22:22:03 +0200 Subject: Adding upstream version 3:4.8.30. Signed-off-by: Daniel Baumann --- src/viewer/lib.c | 437 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 437 insertions(+) create mode 100644 src/viewer/lib.c (limited to 'src/viewer/lib.c') diff --git a/src/viewer/lib.c b/src/viewer/lib.c new file mode 100644 index 0000000..5f2eb52 --- /dev/null +++ b/src/viewer/lib.c @@ -0,0 +1,437 @@ +/* + Internal file viewer for the Midnight Commander + Common finctions (used from some other mcviewer functions) + + Copyright (C) 1994-2023 + Free Software Foundation, Inc. + + Written by: + Miguel de Icaza, 1994, 1995, 1998 + Janne Kukonlehto, 1994, 1995 + Jakub Jelinek, 1995 + Joseph M. Hinkle, 1996 + Norbert Warmuth, 1997 + Pavel Machek, 1998 + Roland Illig , 2004, 2005 + Slava Zanko , 2009, 2013 + Andrew Borodin , 2009-2022 + Ilia Maslakov , 2009 + + This file is part of the Midnight Commander. + + The Midnight Commander 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 3 of the License, + or (at your option) any later version. + + The Midnight Commander 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, see . + */ + +#include + +#include /* memset() */ +#include + +#include "lib/global.h" +#include "lib/vfs/vfs.h" +#include "lib/strutil.h" +#include "lib/util.h" /* save_file_position() */ +#include "lib/widget.h" +#ifdef HAVE_CHARSET +#include "lib/charsets.h" +#endif + +#ifdef HAVE_CHARSET +#include "src/selcodepage.h" +#endif + +#include "internal.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +/*** file scope type declarations ****************************************************************/ + +/*** file scope variables ************************************************************************/ + +/*** file scope functions ************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_toggle_magic_mode (WView * view) +{ + char *filename, *command; + dir_list *dir; + int *dir_idx; + + mcview_altered_flags.magic = TRUE; + view->mode_flags.magic = !view->mode_flags.magic; + + /* reinit view */ + filename = g_strdup (vfs_path_as_str (view->filename_vpath)); + command = g_strdup (view->command); + dir = view->dir; + dir_idx = view->dir_idx; + view->dir = NULL; + view->dir_idx = NULL; + mcview_done (view); + mcview_init (view); + mcview_load (view, command, filename, 0, 0, 0); + view->dir = dir; + view->dir_idx = dir_idx; + g_free (filename); + g_free (command); + + view->dpy_bbar_dirty = TRUE; + view->dirty++; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_toggle_wrap_mode (WView * view) +{ + view->mode_flags.wrap = !view->mode_flags.wrap; + view->dpy_wrap_dirty = TRUE; + view->dpy_bbar_dirty = TRUE; + view->dirty++; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_toggle_nroff_mode (WView * view) +{ + view->mode_flags.nroff = !view->mode_flags.nroff; + mcview_altered_flags.nroff = TRUE; + view->dpy_wrap_dirty = TRUE; + view->dpy_bbar_dirty = TRUE; + view->dirty++; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_toggle_hex_mode (WView * view) +{ + view->mode_flags.hex = !view->mode_flags.hex; + + if (view->mode_flags.hex) + { + view->hex_cursor = view->dpy_start; + view->dpy_start = mcview_offset_rounddown (view->dpy_start, view->bytes_per_line); + widget_want_cursor (WIDGET (view), TRUE); + } + else + { + view->dpy_start = mcview_bol (view, view->hex_cursor, 0); + view->hex_cursor = view->dpy_start; + widget_want_cursor (WIDGET (view), FALSE); + } + mcview_altered_flags.hex = TRUE; + view->dpy_paragraph_skip_lines = 0; + view->dpy_wrap_dirty = TRUE; + view->dpy_bbar_dirty = TRUE; + view->dirty++; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_init (WView * view) +{ + size_t i; + + view->filename_vpath = NULL; + view->workdir_vpath = NULL; + view->command = NULL; + view->search_nroff_seq = NULL; + + mcview_set_datasource_none (view); + + view->growbuf_in_use = FALSE; + /* leave the other growbuf fields uninitialized */ + + view->hexedit_lownibble = FALSE; + view->locked = FALSE; + view->coord_cache = NULL; + + view->dpy_start = 0; + view->dpy_paragraph_skip_lines = 0; + mcview_state_machine_init (&view->dpy_state_top, 0); + view->dpy_wrap_dirty = FALSE; + view->force_max = -1; + view->dpy_text_column = 0; + view->dpy_end = 0; + view->hex_cursor = 0; + view->cursor_col = 0; + view->cursor_row = 0; + view->change_list = NULL; + + /* {status,ruler,data}_area are left uninitialized */ + + view->dirty = 0; + view->dpy_bbar_dirty = TRUE; + view->bytes_per_line = 1; + + view->search_start = 0; + view->search_end = 0; + + view->marker = 0; + for (i = 0; i < G_N_ELEMENTS (view->marks); i++) + view->marks[i] = 0; + + view->update_steps = 0; + view->update_activate = 0; + + view->saved_bookmarks = NULL; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_done (WView * view) +{ + /* Save current file position */ + if (mcview_remember_file_position && view->filename_vpath != NULL) + { + save_file_position (view->filename_vpath, -1, 0, + view->mode_flags.hex ? view->hex_cursor : view->dpy_start, + view->saved_bookmarks); + view->saved_bookmarks = NULL; + } + + /* Write back the global viewer mode */ + mcview_global_flags = view->mode_flags; + + /* Free memory used by the viewer */ + /* view->widget needs no destructor */ + vfs_path_free (view->filename_vpath, TRUE); + view->filename_vpath = NULL; + vfs_path_free (view->workdir_vpath, TRUE); + view->workdir_vpath = NULL; + MC_PTR_FREE (view->command); + + mcview_close_datasource (view); + /* the growing buffer is freed with the datasource */ + + if (view->coord_cache != NULL) + { + g_ptr_array_free (view->coord_cache, TRUE); + view->coord_cache = NULL; + } + + if (view->converter == INVALID_CONV) + view->converter = str_cnv_from_term; + + if (view->converter != str_cnv_from_term) + { + str_close_conv (view->converter); + view->converter = str_cnv_from_term; + } + + mcview_search_deinit (view); + view->search = NULL; + view->last_search_string = NULL; + mcview_hexedit_free_change_list (view); + + if (mc_global.mc_run_mode == MC_RUN_VIEWER && view->dir != NULL) + { + /* mcviewer is the owner of file list */ + dir_list_free_list (view->dir); + g_free (view->dir); + g_free (view->dir_idx); + } + + view->dir = NULL; +} + +/* --------------------------------------------------------------------------------------------- */ + +#ifdef HAVE_CHARSET +void +mcview_set_codeset (WView * view) +{ + const char *cp_id = NULL; + + view->utf8 = TRUE; + cp_id = + get_codepage_id (mc_global.source_codepage >= + 0 ? mc_global.source_codepage : mc_global.display_codepage); + if (cp_id != NULL) + { + GIConv conv; + conv = str_crt_conv_from (cp_id); + if (conv != INVALID_CONV) + { + if (view->converter != str_cnv_from_term) + str_close_conv (view->converter); + view->converter = conv; + } + view->utf8 = (gboolean) str_isutf8 (cp_id); + view->dpy_wrap_dirty = TRUE; + } +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_select_encoding (WView * view) +{ + if (do_select_codepage ()) + mcview_set_codeset (view); +} +#endif /* HAVE_CHARSET */ + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_show_error (WView * view, const char *msg) +{ + if (mcview_is_in_panel (view)) + mcview_set_datasource_string (view, msg); + else + message (D_ERROR, MSG_ERROR, "%s", msg); +} + +/* --------------------------------------------------------------------------------------------- */ +/** returns index of the first char in the line + * it is constant for all line characters + */ + +off_t +mcview_bol (WView * view, off_t current, off_t limit) +{ + int c; + off_t filesize; + filesize = mcview_get_filesize (view); + if (current <= 0) + return 0; + if (current > filesize) + return filesize; + if (!mcview_get_byte (view, current, &c)) + return current; + if (c == '\n') + { + if (!mcview_get_byte (view, current - 1, &c)) + return current; + if (c == '\r') + current--; + } + while (current > 0 && current > limit) + { + if (!mcview_get_byte (view, current - 1, &c)) + break; + if (c == '\r' || c == '\n') + break; + current--; + } + return current; +} + +/* --------------------------------------------------------------------------------------------- */ +/** returns index of last char on line + width EOL + * mcview_eol of the current line == mcview_bol next line + */ + +off_t +mcview_eol (WView * view, off_t current) +{ + int c, prev_ch = 0; + + if (current < 0) + return 0; + + while (TRUE) + { + if (!mcview_get_byte (view, current, &c)) + break; + if (c == '\n') + { + current++; + break; + } + else if (prev_ch == '\r') + { + break; + } + current++; + prev_ch = c; + } + return current; +} + +/* --------------------------------------------------------------------------------------------- */ + +char * +mcview_get_title (const WDialog * h, size_t len) +{ + const WView *view; + const char *modified; + const char *file_label; + const char *view_filename; + char *ret_str; + + view = (const WView *) widget_find_by_type (CONST_WIDGET (h), mcview_callback); + modified = view->hexedit_mode && (view->change_list != NULL) ? "(*) " : " "; + view_filename = vfs_path_as_str (view->filename_vpath); + + len -= 4; + + file_label = view_filename != NULL ? view_filename : view->command != NULL ? view->command : ""; + file_label = str_term_trim (file_label, len - str_term_width1 (_("View: "))); + + ret_str = g_strconcat (_("View: "), modified, file_label, (char *) NULL); + return ret_str; +} + +/* --------------------------------------------------------------------------------------------- */ + +int +mcview_calc_percent (WView * view, off_t p) +{ + off_t filesize; + int percent; + + if (view->status_area.cols < 1 || (view->status_area.x + view->status_area.cols) < 4) + return (-1); + if (mcview_may_still_grow (view)) + return (-1); + + filesize = mcview_get_filesize (view); + if (view->mode_flags.hex && filesize > 0) + { + /* p can't be beyond the last char, only over that. Compensate for this. */ + filesize--; + } + + if (filesize == 0 || p >= filesize) + percent = 100; + else if (p > (INT_MAX / 100)) + percent = p / (filesize / 100); + else + percent = p * 100 / filesize; + + return percent; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +mcview_clear_mode_flags (mcview_mode_flags_t * flags) +{ + memset (flags, 0, sizeof (*flags)); +} + +/* --------------------------------------------------------------------------------------------- */ -- cgit v1.2.3