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Subject: v16i065: Front end editor program, Part05/05 Newsgroups: comp.sources.unix Sender: sources Approved: rsalz@uunet.UU.NET Submitted-by: Kazumasa Utashiro <kddlab!sra.junet!utashiro> Posting-number: Volume 16, Issue 65 Archive-name: fep/part05 #!/bin/sh # to extract, remove the header and type "sh filename" if `test ! -s ./Makefile` then echo "writing ./Makefile" cat > ./Makefile << '\End\Of\File\' # # Copyright (c) 1987, 1988 by Software Research Associates, Inc. # # $Header: Makefile,v 4.0 88/08/05 20:24:19 utashiro Exp $ # # Options: # KANJI: SHIFT-JIS kanji code handling on ASCII KANJI UNIX # TARGET = fep HEADER = fep_defs.h fep_glob.h fep_funcs.h fep_stat.h SRC = fep_main.c fep_edit.c fep_hist.c fep_com.c fep_funcs.c fep_set.c \ fep_vi.c fep_util.c fep_alias.c OBJ = fep_main.o fep_edit.o fep_hist.o fep_com.o fep_funcs.o fep_set.o \ fep_vi.o fep_util.o fep_alias.o DISTRIBUTION\ = Makefile fep.1 $(HEADER) $(SRC) feprc.sample README INSTDIR = /usr/local/bin #STAT = -DSTAT# Delete # for statistic info #KANJI = -DKANJI# Delete # for KANJI handling CONFIG = $(STAT) $(KANJI) DEBUG = -g #DEBUG = -O CFLAGS = $(DEBUG) $(CONFIG) LDFLAGS = -ltermlib all: $(TARGET) $(TARGET): $(OBJ) $(CC) -o $(TARGET) $(CFLAGS) $(OBJ) $(LDFLAGS) argv: fep_com.c $(CC) -o argv -DMKARGDEBUG fep_util.c install: $(TARGET) install -s $(TARGET) $(INSTDIR) install -c fep.1 /usr/man/manl/fep.l README.jis: README jcat -IJ README > $@ # rogue-monster version shar shar: fep.shr1 TARGETSIZE=40000 fep.shr1: $(DISTRIBUTION) shar -f fep -m $(TARGETSIZE) $(DISTRIBUTION) # tektronix shar tshar: $(DISTRIBUTION) shar $(DISTRIBUTION) > fep.shar clean: rm -f *.o $(TARGET) distversion: $(DISTRIBUTION) @ident $(DISTRIBUTION) | grep Header fep_main.o: fep_defs.h fep_glob.h fep_funcs.h fep_stat.h fep_com.o: fep_defs.h fep_glob.h fep_funcs.h fep_edit.o: fep_defs.h fep_glob.h fep_funcs.h fep_funcs.o: fep_funcs.h fep_hist.o: fep_defs.h fep_glob.h fep_funcs.h fep_set.o: fep_defs.h fep_glob.h fep_util.o: fep_defs.h fep_vi.o: fep_defs.h fep_glob.h fep_funcs.h \End\Of\File\ else echo "will not over write ./Makefile" fi if `test ! -s ./fep.1` then echo "writing ./fep.1" cat > ./fep.1 << '\End\Of\File\' .\" Copyright (c) 1987, 1988 by Software Research Associates, Inc. .\" $Header: fep.1,v 4.0 88/08/05 20:22:31 utashiro Rel $ .TH FEP 1L "5 Aug 1988" "SRA Distribution" .SH NAME fep \(em general purpose front end processor .SH SYNOPSIS \fBfep\fR [\|-\fBemacs\fR\||\|-\fBvi\fR\|] \fI\s-1UNIX\s0-command\fR .SH DESCRIPTION .I Fep is a general purpose front end processor applicable to most UNIX commands that features \fIvi\fP\|(1)- or \fIemacs\fR\|(1)-like line editing and a command history mechanism like that of \fIcsh\fR\|(1). .PP Choice of editing style is made by selecting either the emacs mode or the vi mode (named for the editors they emulate), specified either by command line option or by setting a variable interactively or in the start-up file or environment EDITMODE (see editmode variable). .PP The default key bindings are shown below for both edit modes. These can be customized using the fep-bind command. .PP .B Emacs Bindings .PP Here follow the default key bindings for the emacs mode. Each function name should be self-explanatory. The function names are defined as similarly to Gosling's emacs as possible. .sp .RS .nf .ta 1.5i ^@ mark ^A beginning-of-line ^B backward-character ^D delete-next-character ^E end-of-line ^F forward-character ^I insert-tab ^J new-line ^K kill-to-end-of-line ^L clear-screen ^M new-line ^N next-history ^P previous-history ^T previous-history ^Y yank-from-kill-buffer ^^ toggle-transparency ^X-^B show-bindings ^X-^H show-history ^X-^C terminate ^X-^D send-eof ^X-^L repaint ^X-( start-script ^X-) end-script esc-b backward-word esc-B backward-word esc-d delete-next-word esc-D delete-next-word esc-f forward-word esc-F forward-word esc-h delete-previous-word esc-H delete-previous-word esc-l list-file-name esc-L list-file-name esc-esc expand-file-name esc-? help esc-_ invoke-shell esc-< search-reverse esc-> search-forward .if t .sp .3v /* Bindings inherited from the tty driver */ .if t .sp .3v erase delete-previous-character kill delete-line rprnt reprint werase delete-previous-word lnext literal-next .fi .RE .sp .B Vi bindings .PP The vi mode has two sub-modes, the command mode and the text insert mode. The commands of vi are emulated as correctly as possible. Here is a list of the default key bindings of the vi mode that differ from normal vi commands. The tty driver control characters are also inherited in this mode. .sp .RS .nf n search-reverse N search-forward ^A expand-file-name ^L list-file-name ^N next-history ^P previous-history ^R reprint ^^ toggle-transparency ^X-^B show-bindings ^X-^H show-history ^X-^L repaint ^X-^X expand-file-name ^X-^C terminate ^X-^D send-eof ^X-l list-file-name ^X-L list-file-name ^X-? help ^X-( start-script ^X-) end-script .fi .RE .sp .B Built-in commands .PP .I Fep has some built-in commands that are not passed to the child process but understood and processed by fep itself. These commands can be issued from the terminal or from the start-up file. .RS 3n .IP "\fBfep-bind \fIfunction-name key-binding\fR" Change key bindings. For example, to bind the function .I list-file-name to the string "^X-^X", type the following: .if t .sp 0.3v .if n .sp 1 \h'\w'MMMMM'u'fep-bind list-file-name "\\^X\\^X" .if t .sp 0.3v .if n .sp 1 .PP .nf \fBfep-alias\fP \fBfep-alias\fP \fIname\fP \fBfep-alias\fP \fIname string\fP .fi .RS The first form prints all aliases. The second form prints the alias for \fIname\fP. The last form set the alias for \fIname\fP to \fIstring\fP. .PP If you use .I fep without \fIauto-tty-fix\fP, following alias could be usefull. .if t .sp .3v .if n .sp 1 .nf \h'\w'MMMMM'u'if\ $command\ ==\ sh \h'\w'MMMMMMMMMM'u'fep-alias\ more\ "fep-command\ more" \h'\w'MMMMMMMMMM'u'fep-alias\ vi\ "fep-command\ vi" \h'\w'MMMMM'u'endif .fi .if t .sp .3v .if n .sp 1 .RE .IP "\fBfep-unalias\fP \fIlist\fP" Remove alias for each name in \fIlist\fP. .IP "\fBfep-set\fP \fIvariable = value\fR" Set a variable of \fIfep\fP to some value. .IP "\fBfep-unset\fP \fIvariable\fR" Unset a variable. .PP \fBfep-cd\fP [ \fIdirectory\fR ] .br \fBfep-chdir\fP [ \fIdirectory\fR ] .RS Change directory. It sometimes happens that a child process has changed directory, but .I fep is still in the old directory. In such a case, neither \fIlist-file-name\fR nor \fIexpand-file-name\fR will function as expected. This command allows you to change .IR fep 's current working directory (default = home directory). .RE .IP "\fBfep-pwd\fP" Print .IR fep 's current working directory. .IP "\fBfep-history\fP [ \fInumber of line\fR ]" Show the history of commands under .IR fep . .IP "\fBfep-echo\fP \fIarguments\fR" Only print the arguments. Variable names can be used prefixed by the "$" character. .IP "\fBfep-source\fP \fIfile\fR" Read the specified file and execute it. The contents of the file are not sent to sub-processes. .IP "\fBfep-save-history\fP [ \fInumber of lines to save\fR ] \fIfile\fR" Save the current history buffer in the specified file. .IP "\fBfep-read-history\fP [ \fIfile\fR ]" Read in the command history from the specified file. The default file is the value of the \fIhistory-file\fP variable. This file name is understood as a path relative to the home directory. If you want to specify the name relative to the current directory instead, prefix the path by "./". .PP .nf \fBfep-command\fP \fIcommand\fP \fBfep-!\fP \fIcommand\fP .fi .RS Execute \fIcommand\fP. .RE .IP "\fBquit-fep\fP" Kill the sub-process and exit. .PP .IP \fBfep-suspend\fP Suspend .I fep itself. In the unlikely possibility that .I fep falls into a dead-lock in which the sub-processes have stopped but .I fep is still running, use one of these commands to escape from the situation. .PP .nf \fBfep-read-from-file\fP \fIfile\fP \fBfep-<\fP \fIfile\fP .fi .RS Read data from specified file and send them to sub-process. The sub-process will read the data from the file as if they are typed at the keyboard. .RE .PP .nf \fBfep-read-from-command\fP \fIcommand\fP \fBfep-<!\fP \fIcommand\fP .fi .RS Send output of specified command to sub-process. .RE .PP .nf \fBfep-start-script [ \fIscript-file\fP ] \fBfep-script [ \fIscript-file\fP ] .fi .RS Start to send input and output to a script file. If \fIscript-file\fP is specified, it is used. If not the value of the variable \fIscript-file\fP will be used. .RE .PP .nf \fBfep-stop-script\fP .fi .RS Stop scripting. .RE .IP "\fBfep-show-bind\fP" Print current binding information. .IP "\fBfep-repaint\fP [ \fIline\fP ]" Repaint last output from command to screen. ``\fIline\fP'' specifies number of lines to repaint (default is screenful maximum). See also ``\fIauto-repaint\fP'' and ``\fIclear-repaint\fP'' variables. .RE .PP .B Control structures .RS 3n .PP .nf \fBfep-if\fP \fIexpression\fP \fBfep-elseif\fP \fIexpression\fP \fBfep-else\fP \fBfep-endif\fP .fi .RS Only four control structures are supported but that seems enough. .I Expression allows only the two operators "==" and "!=". .ce 0 Variables can be referenced by prefixing with the "$" character. .RE .RE .PP Note: The "\fIfep-\fR" prefix of the built-in functions and the above operators can be abbreviated in commands that .I fep executes from a file. .RE .PP .\" ------------------------------------------------------------ Comment .B Comment .PP Lines starting with the character "#" are ignored by .IR fep . If .I fep encounters a comment in interaction, it is sent to the sub-process. In reading from a file, comments will merely be ignored. .PP .\" ------------------------------------------------------------ Variables .B Variables .PP .I Fep uses some variables. .RS 3n .ta 3i .IP "\fBeditmode\fP default: emacs" This variable defines the mode for command line editing. Key bindings will be set for the appropriate defaults when this variable is changed. .I Fep first looks at the environment variable .IR EDITMODE , then looks at any command line arguments, and finally reads in the .I .feprc start-up file. .IP "\fBexpand-tilde\fP default: on" .I Fep expands "~" to the real home directory name by the expand-file-name function when this variable is set. .IP "\fBignore-empty-line\fP default: on" If this variable is set, empty command lines are not saved in the history file. .IP "\fBignore-same-line\fP default: on" If this variable is set, command lines identical to the previous command line are not saved to the history file. .IP "\fBalarm-on-eof\fP default: off" If this variable is set AND the function send-eof is not bound to the eof character AND the variable ignore-eof is not set, an alarm message will be displayed once the first time eof is encountered on an empty line. .IP "\fBhistory\fR default: 100" .I Fep maintains a history file of the length specified by this variable. .IP "\fBsavehist\fR default: off" If .I savehist is set .I fep saves the number of history entries specified by value of this variable in the file named in the variable .I history-file on terminating. .IP "\fBhistory-file\fP default: .fephistory" Contains the name of the history file for reading from and writing to. If the file described by this variable exists, .I fep will read the file into the history buffer on start up and then save the current session's history when it exits. .IP "\fBshowhist\fR default: terminal size" This variable specifies the number of history lines to be displayed by the .I show-history function. .IP "\fBignore-eof\fP default: off" .I Fep never worries about the eof character if this variable is set. .IP "\fBnoalias\fP default: off" If set, command aliasing won't be done. .IP "\fBcrt\fP default: terminal size" If set, more message is shown during printing the key bindings on each number of line specified by this variable. .IP "\fBcommand\fP default: \fIcommand-name\fR" .I Fep set this variable to the command name of the sub-process when it starts up. .IP "\fBshell\fR default: /bin/sh" Describe the command name to be invoked by .IR invoke-shell . .IP "\fBauto-tty-fix\fP default: on" If this variable is set, .I fep looks at the tty mode of the sub-command, and if the tty mode has changed, .I fep fixes the tty mode of standard out and sets the transparency flag according to the mode. If this variable is not set, the automatic tty mode check is not done, so you have to change the tty mode and transparency explicitly using the \fItoggle-transparency\fP function. .IP "\fBtty-fix-bell\fP default: off" If this variable is set, .I fep rings the bell when the tty mode is changed. .IP "\fBscript-file\fP default: fepscript" This variable is used by the .I fep-start-script command and by the .I start-script function. .IP "\fBdelimiters\fP default: SPACE & TAB" The contents of this variable are treated as delimiting characters for file name expantion and file name list. .IP "\fBauto-repaint\fP default: off" If this variable is set, \fIfep\fP automatically repaints the screen after restarting. .IP "\fBclear-repaint\fP default: off" If this variable is set, \fIfep\fP clears the screen before repainting. .IP "\fBprompt\fP default: see below" .I Fep outputs a prompt after executing built-in functions. The default string is set to the NULL string, but there are some default prompt strings for some common commands such as .I sh, dbx, lpc, mail, "sendmail -bt" and .I calc. However, since .I fep doesn't care about what program is running, the same prompt is still output when you are executing .I bc from .IR sh . .br You can change the value of prompt and other variables in the start-up file as follows: .if t .sp .3v .if n .sp 1 .RS .DT .nf \h'\w'MMMMM'u'if $command == sh \h'\w'MMMMMMMMMM'u'set prompt = "$ " \h'\w'MMMMM'u'endif .fi .RE .RE .PP .B Start-Up File .PP .I Fep executes the file ".feprc" in the home directory of the user if it is found there when starting up. It looks for arguments on the command line first, and only then reads the ".feprc" file, so the file has higher priority. .PP .B "Functions" .PP .ta \w'delete-previous-character\ \ \ 'u .RS .nf abort Abort function backward-Word Backward word (non-space) backward-character Backward character backward-word Backward word (alpha-numeric) beginning-of-line Jump to beginning of line clear-screen Clear screen delete-line Delete whole line delete-next-Word Delete next word (non-space) delete-next-character Delete next character delete-next-word Delete next word (alpha-numeric) delete-previous-Word Delete previous word (non-space) delete-previous-character Delete previous character delete-previous-word Delete previous word (alpha-numeric) delete-to-kill-buffer Delete resion to buffer end-of-line Jump to end of line end-script End script expand-file-name Expand file name fix-transparency Check tty and change transparency mode forward-Word Forward word (non-space) forward-character Forward character forward-to-end-of-Word Forward to end of word (non-space) forward-to-end-of-word Forward to end of word (alpha-numeric) forward-word Forward word (alpha-numeric) help Show help ignore Ignore insert-and-flush Insert the character and flush buffer insert-tab Insert tab invoke-shell Invoke shell process kill-to-end-of-line Delete current position to eol kill-to-top-of-line Delete tol to current position list-file-name List file name literal-next Treat next character as literal mark Mark position new-line Insert newline next-history Get next history previous-history Get previous history repaint Repaint screen reprint Reprint line search-forward Search forward last !history search-reverse Search backward last !history self-insert Insert the character send-eof Send eof show-bindings Show binding table show-history Show history start-script Start script suspend Suspend fep terminate Terminate fep toggle-transparency Change transparency mode vi-c Vi c? commands vi-d Vi d? commands vi-edit Vi edit commands vi-ins-edit Vi insert mode vi-motion Vi cursor motion commands vi-new-line Vi new line vi-num Vi prefix number yank-from-kill-buffer Yank from kill buffer .fi .RE .PP Probably only the function name "\fItoggle-transparency\fR" is hard to understand. This function is provided for entering non-line-oriented tools from a line-oriented tool using .IR fep . Assume a situation where you are using .IR sh (1) with .IR fep , and then invoke .IR vi (1). Since .I fep intercepts all input for editing, .I vi cannot work correctly. You can escape from this annoying situation using the "\fItoggle-transparency\fR" function which is bound to the .I Control-^ key by default. Of course, it is also necessary to return to the normal mode after exiting vi. .PP Note, however, that this tty mode fix can also be done automatically. If the .I auto-tty-fix variable is set, .I fep looks at the tty mode of the sub-command and fixes the tty mode of standard input accordingly. .SH "OTHERS" .PP .I Fep can handle SHIFT-JIS kanji code if compiled with the -DKANJI flag. .SH "SEE ALSO" newcsh(1) .SH COPYRIGHT Copyright (c) 1987, 1988 by Software Research Associates, Inc. .br Distribution without fee is allowed as long as all copyright notices are included. .SH AUTHOR K. Utashiro .br Software Research Associates, Inc., Japan. .RS .nf .ta \w'JUNET: 'u UUCP: kddlab!srava.sra.junet!utashiro ARPA: utashiro%sra.junet@uunet.uu.net JUNET: utashiro@sra.junet .fi .RE .SH FILES .ta \w'~/.feprc,\ ./.feprc\ \ \ 'u .nf \^~/.feprc,\ ./.feprc start-up file \^~/.fephistory default history file \^./fepscript default script file .fi .SH BUGS .PP While working on the program the author sometimes lost his mind, whereupon so did the program. \End\Of\File\ else echo "will not over write ./fep.1" fi echo "Finished archive 5 of 5" exit