/* fv is a binary file editor written by Chris Hooper (cdh@mtu.edu) * on 6-2-91 and has gone through many revisions since then. * Much inspiration was given by Bill Moore, the first real user! * * Author: CHRISTOPHER D HOOPER * * fv source Copyright (c) 1992 - 1998 Chris Hooper * * Modification and redistribution is strictly prohibited. * Sale of this software above media cost is prohibited. * * Except for above two restrictions, this software may be used for * any purpose, commercial or private. * * Disclaimer: This product is fit for no use, foreign or domestic. * Use implies knowledge you intend to destroy something. */ #include #include #include "main.h" #if !defined(Amiga) && !defined(OS9) && !defined(FreeBSD) # include #endif #include "screen.h" #include "pcurses.h" #ifdef LINT # include "lint.h" #endif char *strdup(); char *help_main = "\ Main Display Keyboard Mappings (brief) \n\ ------------------------------------------------------------------- \n\ 0G() = Start/End/Top/Bottom \n\ hjkl = Scrolling, HJKL moves buffer view \n\ {Enter}= Edit string or hex \n\ {Tab} = Toggle string/hex edit mode \n\ wq^X = Finished editing \n\ m' = Set/Go to mark \n\ twc = Toggle hex/dec,word,character modes \n\ a+- = Toggle address mode,change columns \n\ /?nN = Search forward/backward/next \n\ g = Go to (jump) to hex address \n\ []{} = Location/Range display address divisor \n\ AC = Append/Create file from cursor to mark \n\ udfb = Half Up/Down, Full Forward/Back page \n\ t<> = Type (hex,dec,flt,dbl) Alignment up/down \n\ \n\ \n\ =================================================================== \n\ \n\ \n\ Main Display Keyboard Mappings (detailed) \n\ ------------------------------------------------------------------- \n\ 0-9 Enter number of times to perform command \n\ a Address display on/off \n\ A Append from current cursor position until mark to file \n\ b Back one full display page \n\ ^B Back one full display page \n\ c Character display on/off \n\ C Copy from current cursor position until mark to file \n\ ^C Exit (do not ask to save) \n\ d Down one half display page \n\ ^D Down one half display page \n\ f Forward one full display page \n\ F Select new file from list given on command line \n\ ^F Forward one full display page \n\ g Go to specific byte position (hex) in file \n\ G Go to bottom of file \n\ ^G Show current filename and cursor position in file \n\ h Cursor left \n\ H Buffer window left (fix cursor at file position) \n\ ^H Provide Help screen, ? is Help Screen in other modes \n\ ^I {tab} Change word search mode (string or hex/dec) \n\ j Cursor down \n\ J Buffer window down (fix cursor at file position) \n\ ^J Edit at word (same as Return, either String or Hex) \n\ k Cursor up \n\ K Buffer window up (fix cursor at file position) \n\ l Cursor right \n\ L Buffer window right (fix cursor at file position) \n\ ^L Redraw screen \n\ m Set mark at current file position (type mark character) \n\ M Move cursor to middle of screen \n\ ^M Edit at word (same as Return, either String or Hex) \n\ n Search for next occurrence in current direction \n\ N Reverse direction of search and look again \n\ o Change character that shows for non-ASCII \n\ O Change character that shows for zero \n\ q Exit (ask to save if modified) \n\ Q Exit (do not ask to save) \n\ r Reread buffer and redisplay \n\ R Change Read-only mode \n\ s Change byte swapping mode (off, word, long) \n\ S Toggle byte swapping cursor motion relative to chars/words \n\ t Toggle word display type (hex, decimal) \n\ T Cycle word display type (hex, decimal, float, or double) \n\ u Up one half display page \n\ ^U Up one half display page \n\ w Toggle word display on/off \n\ W Write current buffer contents to file \n\ ^W Write current buffer contents to file \n\ x Exit (ask to save if modified) \n\ ^X Exit (ask to save if modified) \n\ z Set current line of display at top \"z\"; middle \"z.\"; \n\ bottom \"z-\"; or force bottom to top \"z+\" of display \n\ 0 Beginning page of file / location zero of file \n\ / Search forward for String or Hex (depending on '^I' mode) \n\ ? Search backward for String or Hex (depending on '^I' mode) \n\ ? is used in other modes to provide help \n\ ^ Go to beginning of current display row \n\ $ Go to end of current display row \n\ + Add more display columns (up to screen size) \n\ = Add more display columns (up to screen size) \n\ - Subtract display columns (down to a single word column) \n\ _ Subtract display columns (down to a single word column) \n\ ' Go to mark (type mark character) \n\ ` Go to mark (type mark character) \n\ ( Go to top / left of screen \n\ ) Go to bottom / right of screen \n\ < Increase cursor alignment (1, 2, 4, 8 bytes) \n\ > Decrease cursor alignment (8, 4, 2, 1 bytes) \n\ [ Double lower status address display divisor / modulus \n\ ] Halve lower status address display divisor / modulus \n\ { Double left address display divisor / modulus ('a' mode) \n\ } Halve left address display divisor / modulus ('a' mode) \n\ \" Toggle status range address modify between div and mod \n\ ~ Toggle left address modify between divisor & modulator \n\ . Go to string edit mode and repeat last session commands \n\ : Enter colon mode command \n\ "; char *help_hex = "\ Hex Edit Mode \n\ --------------------------------------------- \n\ ^B Move cursor left \n\ ^F Move cursor right \n\ h Move cursor left \n\ j Move cursor down \n\ k Move cursor up \n\ l Move cursor right \n\ Store word in file (same as ^M) \n\ q Quit editing the string, do not store \n\ ^X Quit editing the string, do not store \n\ Move cursor left \n\ 0-9 Enter Hex digit 0-9 \n\ a-f Enter Hex digit a-f \n\ ^ Jump to start of line \n\ ? Display this help \n\ "; char *help_string = "\ String Edit Mode \n\ ------------------------------------------------------------- \n\ ESC Mode: \n\ a Add after cursor position, enter insert mode \n\ A Add at end of string, enter insert mode \n\ b Go to previous word \n\ c f Delete including character, insert mode \n\ c t Delete to character, put in insert mode \n\ c w Delete word, put in insert mode \n\ c ^ Delete to beginning of string, put in insert mode \n\ c 0 Delete to beginning of string, put in insert mode \n\ c $ Delete to end of string, put in insert mode \n\ C Change to end of string \n\ d f Delete including character \n\ d t Delete to character \n\ d w Delete word \n\ d ^ Delete to beginning of string \n\ d 0 Delete to beginning of string \n\ d $ Delete to end of string \n\ D Delete to end of string \n\ e Go to end of this word or next \n\ f Go to next character typed \n\ G Go to end of string \n\ h Cursor left (same as backspace key) \n\ ^H Cursor left (same as backspace key) \n\ i Insert at cursor position, enter insert mode \n\ I Insert at beginning of string, enter insert mode \n\ j Cursor down \n\ k Cursor up \n\ l Cursor right \n\ q Quit editing the string, do not store \n\ r Replace single character \n\ R Replace multiple characters (overstrike) \n\ s Substitute for single character \n\ t Go to character before next typed character \n\ T Go to character before next typed character \n\ u Undo last change \n\ U Undo all changes to string \n\ w Go to next word \n\ x Erase single character \n\ 0 Go to beginning of string \n\ $ Go to end of string \n\ ~ Switch case of current alphabetic character \n\ . Repeat last edit command \n\ ^ Go to beginning of string \n\ ^M Finished editing (same as return) \n\ ^X Quit editing the string, do not store \n\ ? Display this help information \n\ ESC Enter ESC command mode \n\ \n\ Insert Mode only: \n\ ^H Delete left of cursor (same as backspace key) \n\ ^V Add next raw character to string \n\ "; char *help_prompt = "\ File name prompt editor \n\ ---------------------------------------- \n\ a = Add after current cursor position \n\ A = Add at end of name \n\ c = Change w=word t=to (character) \n\ d = Delete w=word t=to (character) \n\ h = Cursor Left \n\ i = Insert at current cursor position \n\ I = Insert at beginning of name \n\ j = Cursor Right \n\ k = Cursor Left \n\ l = Cursor Right \n\ r = Replace single character \n\ s = Substitute for single character \n\ 0 = Go to beginning of name \n\ ^ = Go to beginning of name \n\ $ = Go to end of name \n\ u = Undo last edit \n\ U = Undo all edits to name \n\ ^H = Delete left of cursor \n\ ^U = Erase line \n\ ^V = Next character is raw \n\ ESC = Escape (command mode) from insert \n\ "; char *help_select = "\ Select file help \n\ ------------------------------- \n\ b = Move cursor left \n\ f = Move cursor right \n\ h = Move cursor left \n\ l = Move cursor right \n\ q = Quit without selecting \n\ = Select new file to edit \n\ $ = Go to last file \n\ 0 = Go to first file \n\ ^ = Go to first file \n\ % = Go to current file \n\ = Go to next file (wraps) \n\ ? = Display this help \n\ ^L = Refresh (redraw) screen \n\ "; #ifdef COLON_MODE char *help_colon = "\ Colon prompt help \n\ ------------------------------------------ \n\ :e = Edit new filename(s) \n\ :h = This help information \n\ :n = Go to next file \n\ :p = Go to previous file \n\ :q = Quit fv \n\ :q! = Quit fv without saving \n\ :r = Go to first file \n\ :w = Write current buffer \n\ :wq = Write current buffer and exit \n\ :x = Exit and write if needed \n\ \n\ Press ^H in main editor for keystroke help \n\ "; #endif char *help_oops = "\ FV has detected an internal error, # \n\ \n\ Please report this to the author, including \n\ a brief description of what you were attempting \n\ to do and which mode the editor was in. \n\ "; WINDOW *help_window = NULL; void help_me_text(); void help_me(which) int which; { if (noscreen) return; switch (which) { case 0: /* main */ help_me_text(help_main); break; case 1: /* hex editor */ help_me_text(help_hex); break; case 2: /* string editor */ help_me_text(help_string); break; case 3: /* prompt string */ help_me_text(help_prompt); break; case 4: /* file selector */ help_me_text(help_select); break; #ifdef COLON_MODE case 5: /* colon mode */ help_me_text(help_colon); break; #endif default: { char *buf; buf = strdup(help_oops); sprintf(buf + 36, "%d.", which); /* get rid of sprintf's '\0' */ buf[strlen(buf)] = ' '; help_me_text(buf); free(buf); break; } } } void help_me_text(str) char *str; { int row; int col; int rows = 0; int cols = 0; int ccols = 1; int scols = 0; int srows = 0; int index; int temp; int SCOLS; int SLINES; int ch; char *ptr; WINDOW *help_window; for (ptr = str; *ptr != '\0'; ptr++) { ch = *ptr; switch (ch) { case '\n': rows++; if (ccols > cols) cols = ccols; ccols = 0; scols = 0; break; case '\t': scols += 8 - ((ccols + scols) & 7); break; case ' ': scols++; break; default: ccols += scols + 1; scols = 0; } } recalc_screen: SCOLS = COLS; SLINES = LINES; if (rows > SLINES - 6) srows = SLINES - 6; else srows = rows; if (cols > SCOLS - 6) scols = SCOLS - 6; else scols = cols; help_window = xnewwin(srows + 2, scols + 2, (SLINES - srows - 2) / 2, (SCOLS - scols - 2) / 2); #ifdef STAT_COLOR wattron(help_window, STAT_COLOR); #endif box(help_window, '|', '-'); #ifdef CRSR_COLOR wattron(help_window, CRSR_COLOR); leaveok(help_window, TRUE); #else leaveok(help_window, FALSE); #endif col = 0; row = 0; do { /* move to start row in string */ for (ptr = str, index = 0; index < row; index++) { for (; (ch = *ptr) != '\n'; ptr++) if (ch == '\0') break; ptr++; } /* display up to srows rows from here */ for (index = 0; index < srows; index++) { xmove(help_window, index + 1, 1); for (temp = 0; (ch = *ptr) != '\n'; ptr++) { if ((ch == '\0') || (temp >= col)) break; else if (ch == '\t') temp += 8 - (temp & 7); else temp++; if (temp > col) break; } ccols = 0; for (; (ch = *ptr) != '\n'; ptr++) { if (ch == '\0') break; if (ch == '\t') { temp = 8 - ((ccols + col) & 7); while (temp--) if (ccols++ < scols) xaddch(help_window, ' '); } else { if (ccols++ < scols) xaddch(help_window, ch); } } for (; ccols < scols; ccols++) xaddch(help_window, ' '); ptr++; } xmove(help_window, srows + 1, scols + 1); xrefresh(help_window); ch = get_key(); if ((COLS != SCOLS) || (LINES != SLINES)) { unget_key(ch); delwin(help_window); touchwin(main_window); xrefresh(main_window); goto recalc_screen; } switch (ch) { #ifndef EMACS_FEEL case 2: /* ^B */ #endif case 'b': row -= srows; if (row < 0) row = 0; break; case 4: /* ^D */ row += srows / 2; if (row > rows - srows) row = rows - srows; break; case ' ': if (row == rows - srows) ch = 13; #ifndef EMACS_FEEL case 6: /* ^F */ #endif case 'f': row += srows; if (row > rows - srows) row = rows - srows; break; case 'h': case 'H': #ifdef EMACS_FEEL case 2: /* ^B */ #endif #ifdef KEY_LEFT case KEY_LEFT: #endif if (col > 0) col--; break; case 'j': case 'J': case 14: /* ^N */ #ifdef KEY_DOWN case KEY_DOWN: #endif if (row < rows - srows) row++; break; case 'k': case 'K': case 16: /* ^P */ #ifdef KEY_UP case KEY_UP: #endif if (row > 0) row--; break; case 12: /* ^L */ xclear(stdscr); xmove(stdscr, 0, 0); xclrtobot(stdscr); xtouchwin(main_window); xtouchwin(status_window); xtouchwin(help_window); xrefresh(stdscr); xrefresh(main_window); xrefresh(status_window); xrefresh(help_window); break; case 'l': case 'L': #ifdef EMACS_FEEL case 6: /* ^F */ #endif #ifdef KEY_RIGHT case KEY_RIGHT: #endif if (col < cols - scols) col++; break; case 'G': row = rows - srows; if (row < 0) row = 0; break; case 21: /* ^U */ row -= srows / 2; if (row < 0) row = 0; break; case 24: /* ^X */ case 13: /* ^M */ case 10: /* ^R */ case 27: /* ESC */ case 'q': case 'x': ch = 13; break; case '0': row = 0; break; } } while (ch != 13); /* ^M */ delwin(help_window); }