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Subject: MicroEmacs, Version 3.7 (uEmacs3.7), Part01/12 Newsgroups: mod.sources Approved: rs@mirror.UUCP Submitted by: ihnp4!pur-ee!pur-phy!duncan!lawrence Mod.sources: Volume 6, Issue 71 Archive-name: uEmacs3.7/Part01 [ This is the latest revision of one of two programs named "MicroEmacs"; when discussing these on the net, or in contacting the authors, make sure to mention the version number -- in this case 3.7 -- as that is the easiest way to distinguish between them. Lawrence will be posting uuencoded executables in net.micro.pc and net.micro.amiga; the file 'readme' contains information on how to also get these from him directly. --r$ ] echo extracting - Makefile sed 's/^X//' > Makefile << 'FRIDAY_NIGHT' XCFLAGS= -O -I/usr/tools/include/bland X XOFILES= ansi.o basic.o bind.o buffer.o display.o file.o \ X fileio.o hp150.o line.o lock.c main.o random.o region.o \ X search.o spawn.o tcap.o termio.o vt52.o window.o word.o \ X exec.o input.o isearch.o X XCFILES= ansi.c basic.c bind.c buffer.c display.c file.c \ X fileio.c hp150.c line.c lock.c main.c random.c region.c \ X search.c spawn.c tcap.c termio.c vt52.c window.c word.c \ X exec.c input.c isearch.c X XHFILES= estruct.h edef.h efunc.h epath.h X Xemacs: $(OFILES) X $(CC) $(CFLAGS) $(OFILES) -ltermcap -lc -o emacs X X$(OFILES): $(HFILES) FRIDAY_NIGHT echo extracting - ansi.c sed 's/^X//' > ansi.c << 'FRIDAY_NIGHT' X/* X * The routines in this file provide support for ANSI style terminals X * over a serial line. The serial I/O services are provided by routines in X * "termio.c". It compiles into nothing if not an ANSI device. X */ X X#define termdef 1 /* don't define "term" external */ X X#include <stdio.h> X#include "estruct.h" X#include "edef.h" X X#if ANSI X X#if AMIGA X#define NROW 23 /* Screen size. */ X#define NCOL 77 /* Edit if you want to. */ X#else X#define NROW 25 /* Screen size. */ X#define NCOL 80 /* Edit if you want to. */ X#endif X#define NPAUSE 100 /* # times thru update to pause */ X#define MARGIN 8 /* size of minimim margin and */ X#define SCRSIZ 64 /* scroll size for extended lines */ X#define BEL 0x07 /* BEL character. */ X#define ESC 0x1B /* ESC character. */ X Xextern int ttopen(); /* Forward references. */ Xextern int ttgetc(); Xextern int ttputc(); Xextern int ttflush(); Xextern int ttclose(); Xextern int ansimove(); Xextern int ansieeol(); Xextern int ansieeop(); Xextern int ansibeep(); Xextern int ansiopen(); Xextern int ansirev(); Xextern int ansiclose(); X X#if COLOR Xextern int ansifcol(); Xextern int ansibcol(); X Xint cfcolor = -1; /* current forground color */ Xint cbcolor = -1; /* current background color */ X#endif X X/* X * Standard terminal interface dispatch table. Most of the fields point into X * "termio" code. X */ XTERM term = { X NROW-1, X NCOL, X MARGIN, X SCRSIZ, X NPAUSE, X ansiopen, X ansiclose, X ttgetc, X ttputc, X ttflush, X ansimove, X ansieeol, X ansieeop, X ansibeep, X ansirev X#if COLOR X , ansifcol, X ansibcol X#endif X}; X X#if COLOR Xansifcol(color) /* set the current output color */ X Xint color; /* color to set */ X X{ X if (color == cfcolor) X return; X ttputc(ESC); X ttputc('['); X ansiparm(color+30); X ttputc('m'); X cfcolor = color; X} X Xansibcol(color) /* set the current background color */ X Xint color; /* color to set */ X X{ X if (color == cbcolor) X return; X ttputc(ESC); X ttputc('['); X ansiparm(color+40); X ttputc('m'); X cbcolor = color; X} X#endif X Xansimove(row, col) X{ X ttputc(ESC); X ttputc('['); X ansiparm(row+1); X ttputc(';'); X ansiparm(col+1); X ttputc('H'); X} X Xansieeol() X{ X ttputc(ESC); X ttputc('['); X ttputc('K'); X} X Xansieeop() X{ X#if COLOR X ansifcol(gfcolor); X ansibcol(gbcolor); X#endif X ttputc(ESC); X ttputc('['); X ttputc('J'); X} X Xansirev(state) /* change reverse video state */ X Xint state; /* TRUE = reverse, FALSE = normal */ X X{ X#if COLOR X int ftmp, btmp; /* temporaries for colors */ X#endif X X ttputc(ESC); X ttputc('['); X ttputc(state ? '7': '0'); X ttputc('m'); X#if COLOR X if (state == FALSE) { X ftmp = cfcolor; X btmp = cbcolor; X cfcolor = -1; X cbcolor = -1; X ansifcol(ftmp); X ansibcol(btmp); X } X#endif X} X Xansibeep() X{ X ttputc(BEL); X ttflush(); X} X Xansiparm(n) Xregister int n; X{ X register int q,r; X X q = n/10; X if (q != 0) { X r = q/10; X if (r != 0) { X ttputc((r%10)+'0'); X } X ttputc((q%10) + '0'); X } X ttputc((n%10) + '0'); X} X Xansiopen() X{ X#if V7 | USG | BSD X register char *cp; X char *getenv(); X X if ((cp = getenv("TERM")) == NULL) { X puts("Shell variable TERM not defined!"); X exit(1); X } X if (strcmp(cp, "vt100") != 0) { X puts("Terminal type not 'vt100'!"); X exit(1); X } X#endif X revexist = TRUE; X ttopen(); X} X Xansiclose() X X{ X#if COLOR X ansifcol(7); X ansibcol(0); X#endif X ttclose(); X} X#else Xansihello() X{ X} X#endif FRIDAY_NIGHT echo extracting - azmap.cmd sed 's/^X//' > azmap.cmd << 'FRIDAY_NIGHT' X; AZMAP.CMD: MicroEMACS Macro file X; to translate an AZTEC C .SYM map file into X; the form needed to read it into ADDSYMS X; to be used with Pheonix's PFIX plus (C) debugger X; X; written 6/5/86 by Daniel Lawrence X Xbegining-of-file Xnewline Xprevious-line Xreplace-string ~n "~n 0000:" Xbegining-of-line Xkill-to-end-of-line Xnewline Xnewline Xnewline Xbegining-of-file Xnewline Xinsert-string " Address Publics by Name" Xnewline Xset-mark Xend-of-file Xcase-region-upper Xbegining-of-file Xreplace-string _~n ~n X FRIDAY_NIGHT echo extracting - basic.c sed 's/^X//' > basic.c << 'FRIDAY_NIGHT' X/* X * The routines in this file move the cursor around on the screen. They X * compute a new value for the cursor, then adjust ".". The display code X * always updates the cursor location, so only moves between lines, or X * functions that adjust the top line in the window and invalidate the X * framing, are hard. X */ X#include <stdio.h> X#include "estruct.h" X#include "edef.h" X X/* X * Move the cursor to the X * beginning of the current line. X * Trivial. X */ Xgotobol(f, n) X{ X curwp->w_doto = 0; X return (TRUE); X} X X/* X * Move the cursor backwards by "n" characters. If "n" is less than zero call X * "forwchar" to actually do the move. Otherwise compute the new cursor X * location. Error if you try and move out of the buffer. Set the flag if the X * line pointer for dot changes. X */ Xbackchar(f, n) Xregister int n; X{ X register LINE *lp; X X if (n < 0) X return (forwchar(f, -n)); X while (n--) { X if (curwp->w_doto == 0) { X if ((lp=lback(curwp->w_dotp)) == curbp->b_linep) X return (FALSE); X curwp->w_dotp = lp; X curwp->w_doto = llength(lp); X curwp->w_flag |= WFMOVE; X } else X curwp->w_doto--; X } X return (TRUE); X} X X/* X * Move the cursor to the end of the current line. Trivial. No errors. X */ Xgotoeol(f, n) X{ X curwp->w_doto = llength(curwp->w_dotp); X return (TRUE); X} X X/* X * Move the cursor forwwards by "n" characters. If "n" is less than zero call X * "backchar" to actually do the move. Otherwise compute the new cursor X * location, and move ".". Error if you try and move off the end of the X * buffer. Set the flag if the line pointer for dot changes. X */ Xforwchar(f, n) Xregister int n; X{ X if (n < 0) X return (backchar(f, -n)); X while (n--) { X if (curwp->w_doto == llength(curwp->w_dotp)) { X if (curwp->w_dotp == curbp->b_linep) X return (FALSE); X curwp->w_dotp = lforw(curwp->w_dotp); X curwp->w_doto = 0; X curwp->w_flag |= WFMOVE; X } else X curwp->w_doto++; X } X return (TRUE); X} X Xgotoline(f, n) /* move to a particular line. X argument (n) must be a positive integer for X this to actually do anything */ X X{ X if (n < 1) /* if a bogus argument...then leave */ X return(FALSE); X X /* first, we go to the start of the buffer */ X curwp->w_dotp = lforw(curbp->b_linep); X curwp->w_doto = 0; X return(forwline(f, n-1)); X} X X/* X * Goto the beginning of the buffer. Massive adjustment of dot. This is X * considered to be hard motion; it really isn't if the original value of dot X * is the same as the new value of dot. Normally bound to "M-<". X */ Xgotobob(f, n) X{ X curwp->w_dotp = lforw(curbp->b_linep); X curwp->w_doto = 0; X curwp->w_flag |= WFHARD; X return (TRUE); X} X X/* X * Move to the end of the buffer. Dot is always put at the end of the file X * (ZJ). The standard screen code does most of the hard parts of update. X * Bound to "M->". X */ Xgotoeob(f, n) X{ X curwp->w_dotp = curbp->b_linep; X curwp->w_doto = 0; X curwp->w_flag |= WFHARD; X return (TRUE); X} X X/* X * Move forward by full lines. If the number of lines to move is less than X * zero, call the backward line function to actually do it. The last command X * controls how the goal column is set. Bound to "C-N". No errors are X * possible. X */ Xforwline(f, n) X{ X register LINE *dlp; X X if (n < 0) X return (backline(f, -n)); X if ((lastflag&CFCPCN) == 0) /* Reset goal if last */ X curgoal = getccol(FALSE); /* not C-P or C-N */ X thisflag |= CFCPCN; X dlp = curwp->w_dotp; X while (n-- && dlp!=curbp->b_linep) X dlp = lforw(dlp); X curwp->w_dotp = dlp; X curwp->w_doto = getgoal(dlp); X curwp->w_flag |= WFMOVE; X return (TRUE); X} X X/* X * This function is like "forwline", but goes backwards. The scheme is exactly X * the same. Check for arguments that are less than zero and call your X * alternate. Figure out the new line and call "movedot" to perform the X * motion. No errors are possible. Bound to "C-P". X */ Xbackline(f, n) X{ X register LINE *dlp; X X if (n < 0) X return (forwline(f, -n)); X if ((lastflag&CFCPCN) == 0) /* Reset goal if the */ X curgoal = getccol(FALSE); /* last isn't C-P, C-N */ X thisflag |= CFCPCN; X dlp = curwp->w_dotp; X while (n-- && lback(dlp)!=curbp->b_linep) X dlp = lback(dlp); X curwp->w_dotp = dlp; X curwp->w_doto = getgoal(dlp); X curwp->w_flag |= WFMOVE; X return (TRUE); X} X X#if WORDPRO Xgotobop(f, n) /* go back to the begining of the current paragraph X here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE> X combination to delimit the begining of a paragraph */ X Xint f, n; /* default Flag & Numeric argument */ X X{ X register int suc; /* success of last backchar */ X X if (n < 0) /* the other way...*/ X return(gotoeop(f, -n)); X X while (n-- > 0) { /* for each one asked for */ X X /* first scan back until we are in a word */ X suc = backchar(FALSE, 1); X while (!inword() && suc) X suc = backchar(FALSE, 1); X curwp->w_doto = 0; /* and go to the B-O-Line */ X X /* and scan back until we hit a <NL><NL> or <NL><TAB> X or a <NL><SPACE> */ X while (lback(curwp->w_dotp) != curbp->b_linep) X if (llength(curwp->w_dotp) != 0 && X lgetc(curwp->w_dotp, curwp->w_doto) != TAB && X lgetc(curwp->w_dotp, curwp->w_doto) != ' ') X curwp->w_dotp = lback(curwp->w_dotp); X else X break; X X /* and then forward until we are in a word */ X suc = forwchar(FALSE, 1); X while (suc && !inword()) X suc = forwchar(FALSE, 1); X } X curwp->w_flag |= WFMOVE; /* force screen update */ X return(TRUE); X} X Xgotoeop(f, n) /* go forword to the end of the current paragraph X here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE> X combination to delimit the begining of a paragraph */ X Xint f, n; /* default Flag & Numeric argument */ X X{ X register int suc; /* success of last backchar */ X X if (n < 0) /* the other way...*/ X return(gotobop(f, -n)); X X while (n-- > 0) { /* for each one asked for */ X X /* first scan forward until we are in a word */ X suc = forwchar(FALSE, 1); X while (!inword() && suc) X suc = forwchar(FALSE, 1); X curwp->w_doto = 0; /* and go to the B-O-Line */ X if (suc) /* of next line if not at EOF */ X curwp->w_dotp = lforw(curwp->w_dotp); X X /* and scan forword until we hit a <NL><NL> or <NL><TAB> X or a <NL><SPACE> */ X while (curwp->w_dotp != curbp->b_linep) { X if (llength(curwp->w_dotp) != 0 && X lgetc(curwp->w_dotp, curwp->w_doto) != TAB && X lgetc(curwp->w_dotp, curwp->w_doto) != ' ') X curwp->w_dotp = lforw(curwp->w_dotp); X else X break; X } X X /* and then backward until we are in a word */ X suc = backchar(FALSE, 1); X while (suc && !inword()) { X suc = backchar(FALSE, 1); X } X curwp->w_doto = llength(curwp->w_dotp); /* and to the EOL */ X } X curwp->w_flag |= WFMOVE; /* force screen update */ X return(TRUE); X} X#endif X X/* X * This routine, given a pointer to a LINE, and the current cursor goal X * column, return the best choice for the offset. The offset is returned. X * Used by "C-N" and "C-P". X */ Xgetgoal(dlp) Xregister LINE *dlp; X{ X register int c; X register int col; X register int newcol; X register int dbo; X X col = 0; X dbo = 0; X while (dbo != llength(dlp)) { X c = lgetc(dlp, dbo); X newcol = col; X if (c == '\t') X newcol |= 0x07; X else if (c<0x20 || c==0x7F) X ++newcol; X ++newcol; X if (newcol > curgoal) X break; X col = newcol; X ++dbo; X } X return (dbo); X} X X/* X * Scroll forward by a specified number of lines, or by a full page if no X * argument. Bound to "C-V". The "2" in the arithmetic on the window size is X * the overlap; this value is the default overlap value in ITS EMACS. Because X * this zaps the top line in the display window, we have to do a hard update. X */ Xforwpage(f, n) Xregister int n; X{ X register LINE *lp; X X if (f == FALSE) { X n = curwp->w_ntrows - 2; /* Default scroll. */ X if (n <= 0) /* Forget the overlap */ X n = 1; /* if tiny window. */ X } else if (n < 0) X return (backpage(f, -n)); X#if CVMVAS X else /* Convert from pages */ X n *= curwp->w_ntrows; /* to lines. */ X#endif X lp = curwp->w_linep; X while (n-- && lp!=curbp->b_linep) X lp = lforw(lp); X curwp->w_linep = lp; X curwp->w_dotp = lp; X curwp->w_doto = 0; X curwp->w_flag |= WFHARD; X return (TRUE); X} X X/* X * This command is like "forwpage", but it goes backwards. The "2", like X * above, is the overlap between the two windows. The value is from the ITS X * EMACS manual. Bound to "M-V". We do a hard update for exactly the same X * reason. X */ Xbackpage(f, n) Xregister int n; X{ X register LINE *lp; X X if (f == FALSE) { X n = curwp->w_ntrows - 2; /* Default scroll. */ X if (n <= 0) /* Don't blow up if the */ X n = 1; /* window is tiny. */ X } else if (n < 0) X return (forwpage(f, -n)); X#if CVMVAS X else /* Convert from pages */ X n *= curwp->w_ntrows; /* to lines. */ X#endif X lp = curwp->w_linep; X while (n-- && lback(lp)!=curbp->b_linep) X lp = lback(lp); X curwp->w_linep = lp; X curwp->w_dotp = lp; X curwp->w_doto = 0; X curwp->w_flag |= WFHARD; X return (TRUE); X} X X/* X * Set the mark in the current window to the value of "." in the window. No X * errors are possible. Bound to "M-.". X */ Xsetmark(f, n) X{ X curwp->w_markp = curwp->w_dotp; X curwp->w_marko = curwp->w_doto; X mlwrite("[Mark set]"); X return (TRUE); X} X X/* X * Swap the values of "." and "mark" in the current window. This is pretty X * easy, bacause all of the hard work gets done by the standard routine X * that moves the mark about. The only possible error is "no mark". Bound to X * "C-X C-X". X */ Xswapmark(f, n) X{ X register LINE *odotp; X register int odoto; X X if (curwp->w_markp == NULL) { X mlwrite("No mark in this window"); X return (FALSE); X } X odotp = curwp->w_dotp; X odoto = curwp->w_doto; X curwp->w_dotp = curwp->w_markp; X curwp->w_doto = curwp->w_marko; X curwp->w_markp = odotp; X curwp->w_marko = odoto; X curwp->w_flag |= WFMOVE; X return (TRUE); X} FRIDAY_NIGHT echo extracting - bind.c sed 's/^X//' > bind.c << 'FRIDAY_NIGHT' X/* This file is for functions having to do with key bindings, X descriptions, help commands and startup file. X X written 11-feb-86 by Daniel Lawrence X */ X X#include <stdio.h> X#include "estruct.h" X#include "edef.h" X#include "epath.h" X Xextern int meta(), cex(); /* dummy prefix binding functions */ X Xdeskey(f, n) /* describe the command for a certain key */ X X{ X register int c; /* command character to describe */ X register char *ptr; /* string pointer to scan output strings */ X register KEYTAB *ktp; /* pointer into the command table */ X register int found; /* matched command flag */ X register NBIND *nptr; /* pointer into the name binding table */ X char outseq[80]; /* output buffer for command sequence */ X X /* prompt the user to type us a key to describe */ X mlwrite(": describe-key "); X X /* get the command sequence to describe */ X c = getckey(FALSE); /* get a command sequence */ X X /* change it to something we can print as well */ X cmdstr(c, &outseq[0]); X X /* and dump it out */ X ptr = &outseq[0]; X while (*ptr) X (*term.t_putchar)(*ptr++); X (*term.t_putchar)(' '); /* space it out */ X X /* find the right ->function */ X ktp = &keytab[0]; X found = FALSE; X while (ktp->k_fp != NULL) { X if (ktp->k_code == c) { X found = TRUE; X break; X } X ++ktp; X } X X if (!found) X strcpy(outseq,"Not Bound"); X else { X /* match it against the name binding table */ X nptr = &names[0]; X strcpy(outseq,"[Bad binding]"); X while (nptr->n_func != NULL) { X if (nptr->n_func == ktp->k_fp) { X strcpy(outseq, nptr->n_name); X break; X } X ++nptr; X } X } X X /* output the command sequence */ X ptr = &outseq[0]; X while (*ptr) X (*term.t_putchar)(*ptr++); X} X Xcmdstr(c, seq) /* change a key command to a string we can print out */ X Xint c; /* sequence to translate */ Xchar *seq; /* destination string for sequence */ X X{ X char *ptr; /* pointer into current position in sequence */ X X ptr = seq; X X /* apply meta sequence if needed */ X if (c & META) { X *ptr++ = 'M'; X *ptr++ = '-'; X } X X /* apply ^X sequence if needed */ X if (c & CTLX) { X *ptr++ = '^'; X *ptr++ = 'X'; X } X X /* apply SPEC sequence if needed */ X if (c & SPEC) { X *ptr++ = 'F'; X *ptr++ = 'N'; X } X X /* apply control sequence if needed */ X if (c & CTRL) { X *ptr++ = '^'; X } X X c = c & 255; /* strip the prefixes */ X X /* and output the final sequence */ X X *ptr++ = c; X *ptr = 0; /* terminate the string */ X} X Xhelp(f, n) /* give me some help!!!! X bring up a fake buffer and read the help file X into it with view mode */ X{ X register int status; /* status of I/O operations */ X register WINDOW *wp; /* scaning pointer to windows */ X register BUFFER *bp; /* buffer pointer to help */ X register int i; /* index into help file names */ X char fname[NSTRING]; /* buffer to construct file name in */ X X /* first check if we are already here */ X bp = bfind("emacs.hlp", FALSE, BFINVS); X X if (bp == NULL) { X /* search through the list of help files */ X for (i=2; i < NPNAMES; i++) { X strcpy(fname, pathname[i]); X strcat(fname, pathname[1]); X status = ffropen(fname); X if (status == FIOSUC) X break; X } X X if (status == FIOFNF) { X mlwrite("[Help file is not online]"); X return(FALSE); X } X X /* close the file to prepare for to read it in */ X ffclose(); X } X X /* split the current window to make room for the help stuff */ X if (splitwind(FALSE, 1) == FALSE) X return(FALSE); X X if (bp == NULL) { X /* and read the stuff in */ X if (getfile(fname, FALSE) == FALSE) X return(FALSE); X } else X swbuffer(bp); X X /* make this window in VIEW mode, update all mode lines */ X curwp->w_bufp->b_mode |= MDVIEW; X curwp->w_bufp->b_flag |= BFINVS; X wp = wheadp; X while (wp != NULL) { X wp->w_flag |= WFMODE; X wp = wp->w_wndp; X } X return(TRUE); X} X Xint (*fncmatch(fname))() /* match fname to a function in the names table X and return any match or NULL if none */ X Xchar *fname; /* name to attempt to match */ X X{ X register NBIND *ffp; /* pointer to entry in name binding table */ X X /* scan through the table, returning any match */ X ffp = &names[0]; X while (ffp->n_func != NULL) { X if (strcmp(fname, ffp->n_name) == 0) X return(ffp->n_func); X ++ffp; X } X return(NULL); X} X X/* bindtokey: add a new key to the key binding table X*/ X Xbindtokey(f, n) X Xint f, n; /* command arguments [IGNORED] */ X X{ X register int c; /* command key to bind */ X register (*kfunc)(); /* ptr to the requexted function to bind to */ X register char *ptr; /* ptr to dump out input key string */ X register KEYTAB *ktp; /* pointer into the command table */ X register int found; /* matched command flag */ X char outseq[80]; /* output buffer for keystroke sequence */ X int (*getname())(); X X /* prompt the user to type in a key to bind */ X mlwrite(": bind-to-key "); X X /* get the function name to bind it to */ X kfunc = getname(); X if (kfunc == NULL) { X mlwrite("[No such function]"); X return(FALSE); X } X (*term.t_putchar)(' '); /* space it out */ X (*term.t_flush)(); X X /* get the command sequence to bind */ X c = getckey((kfunc == meta) || (kfunc == cex)); X X /* change it to something we can print as well */ X cmdstr(c, &outseq[0]); X X /* and dump it out */ X ptr = &outseq[0]; X while (*ptr) X (*term.t_putchar)(*ptr++); X X /* if the function is a prefix key */ X if (kfunc == meta || kfunc == cex) { X X /* search for an existing binding for the prefix key */ X ktp = &keytab[0]; X found = FALSE; X while (ktp->k_fp != NULL) { X if (ktp->k_fp == kfunc) { X found = TRUE; X break; X } X ++ktp; X } X X /* reset the appropriate global prefix variable */ X if (kfunc == meta) X metac = c; X if (kfunc == cex) X ctlxc = c; X X /* if we found it, just reset it X otherwise, let it fall through and be added to the end */ X if (found) { X ktp->k_code = c; X return(TRUE); X } X } else { X X /* search the table to see if it exists */ X ktp = &keytab[0]; X found = FALSE; X while (ktp->k_fp != NULL) { X if (ktp->k_code == c) { X found = TRUE; X break; X } X ++ktp; X } X } X X if (found) { /* it exists, just change it then */ X ktp->k_fp = kfunc; X } else { /* otherwise we need to add it to the end */ X /* if we run out of binding room, bitch */ X if (ktp >= &keytab[NBINDS]) { X mlwrite("Binding table FULL!"); X return(FALSE); X } X X ktp->k_code = c; /* add keycode */ X ktp->k_fp = kfunc; /* and the function pointer */ X ++ktp; /* and make sure the next is null */ X ktp->k_code = 0; X ktp->k_fp = NULL; X } X return(TRUE); X} X X/* unbindkey: delete a key from the key binding table X*/ X Xunbindkey(f, n) X Xint f, n; /* command arguments [IGNORED] */ X X{ X register int c; /* command key to unbind */ X register char *ptr; /* ptr to dump out input key string */ X register KEYTAB *ktp; /* pointer into the command table */ X register KEYTAB *sktp; /* saved pointer into the command table */ X register int found; /* matched command flag */ X char outseq[80]; /* output buffer for keystroke sequence */ X X /* prompt the user to type in a key to unbind */ X mlwrite(": unbind-key "); X X /* get the command sequence to unbind */ X c = getckey(FALSE); /* get a command sequence */ X X /* change it to something we can print as well */ X cmdstr(c, &outseq[0]); X X /* and dump it out */ X ptr = &outseq[0]; X while (*ptr) X (*term.t_putchar)(*ptr++); X X /* search the table to see if the key exists */ X ktp = &keytab[0]; X found = FALSE; X while (ktp->k_fp != NULL) { X if (ktp->k_code == c) { X found = TRUE; X break; X } X ++ktp; X } X X /* if it isn't bound, bitch */ X if (!found) { X mlwrite("[Key not bound]"); X return(FALSE); X } X X /* save the pointer and scan to the end of the table */ X sktp = ktp; X while (ktp->k_fp != NULL) X ++ktp; X --ktp; /* backup to the last legit entry */ X X /* copy the last entry to the current one */ X sktp->k_code = ktp->k_code; X sktp->k_fp = ktp->k_fp; X X /* null out the last one */ X ktp->k_code = 0; X ktp->k_fp = NULL; X return(TRUE); X} X Xdesbind(f, n) /* describe bindings X bring up a fake buffer and list the key bindings X into it with view mode */ X{ X register WINDOW *wp; /* scnaning pointer to windows */ X register KEYTAB *ktp; /* pointer into the command table */ X register NBIND *nptr; /* pointer into the name binding table */ X register BUFFER *bp; /* buffer to put binding list into */ X char *strp; /* pointer int string to send */ X int cpos; /* current position to use in outseq */ X char outseq[80]; /* output buffer for keystroke sequence */ X X /* split the current window to make room for the binding list */ X if (splitwind(FALSE, 1) == FALSE) X return(FALSE); X X /* and get a buffer for it */ X bp = bfind("Binding list", TRUE, 0); X if (bp == NULL || bclear(bp) == FALSE) { X mlwrite("Can not display binding list"); X return(FALSE); X } X X /* let us know this is in progress */ X mlwrite("[Building buffer list]"); X X /* disconect the current buffer */ X if (--curbp->b_nwnd == 0) { /* Last use. */ X curbp->b_dotp = curwp->w_dotp; X curbp->b_doto = curwp->w_doto; X curbp->b_markp = curwp->w_markp; X curbp->b_marko = curwp->w_marko; X } X X /* connect the current window to this buffer */ X curbp = bp; /* make this buffer current in current window */ X bp->b_mode = 0; /* no modes active in binding list */ X bp->b_nwnd++; /* mark us as more in use */ X wp = curwp; X wp->w_bufp = bp; X wp->w_linep = bp->b_linep; X wp->w_flag = WFHARD|WFFORCE; X wp->w_dotp = bp->b_dotp; X wp->w_doto = bp->b_doto; X wp->w_markp = NULL; X wp->w_marko = 0; X X /* build the contents of this window, inserting it line by line */ X nptr = &names[0]; X while (nptr->n_func != NULL) { X X /* add in the command name */ X strcpy(outseq, nptr->n_name); X cpos = strlen(outseq); X X /* search down any keys bound to this */ X ktp = &keytab[0]; X while (ktp->k_fp != NULL) { X if (ktp->k_fp == nptr->n_func) { X /* padd out some spaces */ X while (cpos < 25) X outseq[cpos++] = ' '; X X /* add in the command sequence */ X cmdstr(ktp->k_code, &outseq[cpos]); X while (outseq[cpos] != 0) X ++cpos; X X /* and add it as a line into the buffer */ X strp = &outseq[0]; X while (*strp != 0) X linsert(1, *strp++); X lnewline(); X X cpos = 0; /* and clear the line */ X } X ++ktp; X } X X /* if no key was bound, we need to dump it anyway */ X if (cpos > 0) { X outseq[cpos] = 0; X strp = &outseq[0]; X while (*strp != 0) X linsert(1, *strp++); X lnewline(); X } X X /* and on to the next name */ X ++nptr; X } X X curwp->w_bufp->b_mode |= MDVIEW;/* put this buffer view mode */ X curbp->b_flag &= ~BFCHG; /* don't flag this as a change */ X wp->w_dotp = lforw(bp->b_linep);/* back to the begining */ X wp->w_doto = 0; X wp = wheadp; /* and update ALL mode lines */ X while (wp != NULL) { X wp->w_flag |= WFMODE; X wp = wp->w_wndp; X } X mlwrite(""); /* clear the mode line */ X return(TRUE); X} X Xgetckey(mflag) /* get a command key sequence from the keyboard */ X Xint mflag; /* going for a meta sequence? */ X X{ X register int c; /* character fetched */ X register char *tp; /* pointer into the token */ X char tok[NSTRING]; /* command incoming */ X X /* check to see if we are executing a command line */ X if (clexec) { X nxtarg(tok); /* get the next token */ X X /* parse it up */ X tp = &tok[0]; X c = 0; X X /* first, the META prefix */ X if (*tp == 'M' && *(tp+1) == '-') { X c = META; X tp += 2; X } else X X /* next the function prefix */ X if (*tp == 'F' && *(tp+1) == 'N') { X c |= SPEC; X tp += 2; X } else X X /* control-x as well... */ X if (*tp == '^' && *(tp+1) == 'X') { X c |= CTLX; X tp += 2; X } X X /* a control char? */ X if (*tp == '^' & *(tp+1) != 0) { X c |= CTRL; X ++tp; X } X X /* make sure we are not lower case */ X if (c >= 'a' && c <= 'z') X c -= 32; X X /* the final sequence... */ X c |= *tp; X X return(c); X } X X /* or the normal way */ X if (mflag) X c = get1key(); X else X c = getcmd(); X return(c); X} X X/* execute the startup file */ X Xstartup(sfname) X Xchar *sfname; /* name of startup file (null if default) */ X X{ X register int status; /* status of I/O operations */ X register int i; /* index into help file names */ X char fname[NSTRING]; /* buffer to construct file name in */ X char *sfroot; /* root of startup file name */ X X#if (MSDOS & (LATTICE | AZTEC | MSC)) | V7 | USG | BSD X char *homedir; /* pointer to your home directory */ X char *getenv(); X#endif X X if (sfname[0] == 0) X sfroot = pathname[0]; X else X sfroot = sfname; X X#if (MSDOS & (LATTICE | AZTEC | MSC)) | V7 | USG | BSD X /* get the HOME from the environment */ X if ((homedir = getenv("HOME")) != NULL) { X /* build the file name */ X strcpy(fname, homedir); X strcat(fname, "/"); X strcat(fname, sfroot); X X /* and test it */ X status = ffropen(fname); X if (status == FIOSUC) { X ffclose(); X return(dofile(fname)); X } X } X#endif X X /* search through the list of startup files */ X for (i=2; i < NPNAMES; i++) { X strcpy(fname, pathname[i]); X strcat(fname, sfroot); X status = ffropen(fname); X if (status == FIOSUC) X break; X } X X /* if it isn't around, don't sweat it */ X if (status == FIOFNF) X return(TRUE); X X ffclose(); /* close the file to prepare for to read it in */ X X return(dofile(fname)); X} X FRIDAY_NIGHT echo extracting - buffer.c sed 's/^X//' > buffer.c << 'FRIDAY_NIGHT' X/* X * Buffer management. X * Some of the functions are internal, X * and some are actually attached to user X * keys. Like everyone else, they set hints X * for the display system. X */ X#include <stdio.h> X#include "estruct.h" X#include "edef.h" X X/* X * Attach a buffer to a window. The X * values of dot and mark come from the buffer X * if the use count is 0. Otherwise, they come X * from some other window. X */ Xusebuffer(f, n) X{ X register BUFFER *bp; X register int s; X char bufn[NBUFN]; X X if ((s=mlreply("Use buffer: ", bufn, NBUFN)) != TRUE) X return (s); X if ((bp=bfind(bufn, TRUE, 0)) == NULL) X return (FALSE); X return(swbuffer(bp)); X} X Xnextbuffer(f, n) /* switch to the next buffer in the buffer list */ X X{ X register BUFFER *bp; X X bp = curbp->b_bufp; X /* cycle through the buffers to find an eligable one */ X while (bp == NULL || bp->b_flag & BFINVS) { X if (bp == NULL) X bp = bheadp; X else X bp = bp->b_bufp; X } X return(swbuffer(bp)); X} X Xswbuffer(bp) /* make buffer BP current */ X XBUFFER *bp; X X{ X register WINDOW *wp; X X if (--curbp->b_nwnd == 0) { /* Last use. */ X curbp->b_dotp = curwp->w_dotp; X curbp->b_doto = curwp->w_doto; X curbp->b_markp = curwp->w_markp; X curbp->b_marko = curwp->w_marko; X } X curbp = bp; /* Switch. */ X if (curbp->b_active != TRUE) { /* buffer not active yet*/ X /* read it in and activate it */ X readin(curbp->b_fname, TRUE); X curbp->b_dotp = lforw(curbp->b_linep); X curbp->b_doto = 0; X curbp->b_active = TRUE; X } X curwp->w_bufp = bp; X curwp->w_linep = bp->b_linep; /* For macros, ignored. */ X curwp->w_flag |= WFMODE|WFFORCE|WFHARD; /* Quite nasty. */ X if (bp->b_nwnd++ == 0) { /* First use. */ X curwp->w_dotp = bp->b_dotp; X curwp->w_doto = bp->b_doto; X curwp->w_markp = bp->b_markp; X curwp->w_marko = bp->b_marko; X return (TRUE); X } X wp = wheadp; /* Look for old. */ X while (wp != NULL) { X if (wp!=curwp && wp->w_bufp==bp) { X curwp->w_dotp = wp->w_dotp; X curwp->w_doto = wp->w_doto; X curwp->w_markp = wp->w_markp; X curwp->w_marko = wp->w_marko; X break; X } X wp = wp->w_wndp; X } X return (TRUE); X} X X/* X * Dispose of a buffer, by name. X * Ask for the name. Look it up (don't get too X * upset if it isn't there at all!). Get quite upset X * if the buffer is being displayed. Clear the buffer (ask X * if the buffer has been changed). Then free the header X * line and the buffer header. Bound to "C-X K". X */ Xkillbuffer(f, n) X X{ X register BUFFER *bp; X register int s; X char bufn[NBUFN]; X X if ((s=mlreply("Kill buffer: ", bufn, NBUFN)) != TRUE) X return(s); X if ((bp=bfind(bufn, FALSE, 0)) == NULL) /* Easy if unknown. */ X return (TRUE); X return(zotbuf(bp)); X} X Xzotbuf(bp) /* kill the buffer pointed to by bp */ X Xregister BUFFER *bp; X X{ X register BUFFER *bp1; X register BUFFER *bp2; X register int s; X X if (bp->b_nwnd != 0) { /* Error if on screen. */ X mlwrite("Buffer is being displayed"); X return (FALSE); X } X if ((s=bclear(bp)) != TRUE) /* Blow text away. */ X return (s); X free((char *) bp->b_linep); /* Release header line. */ X bp1 = NULL; /* Find the header. */ X bp2 = bheadp; X while (bp2 != bp) { X bp1 = bp2; X bp2 = bp2->b_bufp; X } X bp2 = bp2->b_bufp; /* Next one in chain. */ X if (bp1 == NULL) /* Unlink it. */ X bheadp = bp2; X else X bp1->b_bufp = bp2; X free((char *) bp); /* Release buffer block */ X return (TRUE); X} X Xnamebuffer(f,n) /* Rename the current buffer */ X Xint f, n; /* default Flag & Numeric arg */ X X{ X register BUFFER *bp; /* pointer to scan through all buffers */ X char bufn[NBUFN]; /* buffer to hold buffer name */ X X /* prompt for and get the new buffer name */ Xask: if (mlreply("Change buffer name to: ", bufn, NBUFN) != TRUE) X return(FALSE); X X /* and check for duplicates */ X bp = bheadp; X while (bp != NULL) { X if (bp != curbp) { X /* if the names the same */ X if (strcmp(bufn, bp->b_bname) == 0) X goto ask; /* try again */ X } X bp = bp->b_bufp; /* onward */ X } X X strcpy(curbp->b_bname, bufn); /* copy buffer name to structure */ X curwp->w_flag |= WFMODE; /* make mode line replot */ X mlerase(); X return(TRUE); X} X X/* X * List all of the active X * buffers. First update the special X * buffer that holds the list. Next make X * sure at least 1 window is displaying the X * buffer list, splitting the screen if this X * is what it takes. Lastly, repaint all of X * the windows that are displaying the X * list. Bound to "C-X C-B". X */ Xlistbuffers(f, n) X{ X register WINDOW *wp; X register BUFFER *bp; X register int s; X X if ((s=makelist()) != TRUE) X return (s); X if (blistp->b_nwnd == 0) { /* Not on screen yet. */ X if ((wp=wpopup()) == NULL) X return (FALSE); X bp = wp->w_bufp; X if (--bp->b_nwnd == 0) { X bp->b_dotp = wp->w_dotp; X bp->b_doto = wp->w_doto; X bp->b_markp = wp->w_markp; X bp->b_marko = wp->w_marko; X } X wp->w_bufp = blistp; X ++blistp->b_nwnd; X } X wp = wheadp; X while (wp != NULL) { X if (wp->w_bufp == blistp) { X wp->w_linep = lforw(blistp->b_linep); X wp->w_dotp = lforw(blistp->b_linep); X wp->w_doto = 0; X wp->w_markp = NULL; X wp->w_marko = 0; X wp->w_flag |= WFMODE|WFHARD; X } X wp = wp->w_wndp; X } X return (TRUE); X} X X/* X * This routine rebuilds the X * text in the special secret buffer X * that holds the buffer list. It is called X * by the list buffers command. Return TRUE X * if everything works. Return FALSE if there X * is an error (if there is no memory). X */ Xmakelist() X{ X register char *cp1; X register char *cp2; X register int c; X register BUFFER *bp; X register LINE *lp; X register int s; X register int i; X long nbytes; /* # of bytes in current buffer */ X char b[7+1]; X char line[128]; X X blistp->b_flag &= ~BFCHG; /* Don't complain! */ X if ((s=bclear(blistp)) != TRUE) /* Blow old text away */ X return (s); X strcpy(blistp->b_fname, ""); X if (addline("AC MODES Size Buffer File") == FALSE X || addline("-- ----- ---- ------ ----") == FALSE) X return (FALSE); X bp = bheadp; /* For all buffers */ X X /* build line to report global mode settings */ X cp1 = &line[0]; X *cp1++ = ' '; X *cp1++ = ' '; X *cp1++ = ' '; X X /* output the mode codes */ X for (i = 0; i < NUMMODES; i++) X if (gmode & (1 << i)) X *cp1++ = modecode[i]; X else X *cp1++ = '.'; X strcpy(cp1, " Global Modes"); X if (addline(line) == FALSE) X return(FALSE); X X /* output the list of buffers */ X while (bp != NULL) { X if ((bp->b_flag&BFINVS) != 0) { /* Skip magic ones. */ X bp = bp->b_bufp; X continue; X } X cp1 = &line[0]; /* Start at left edge */ X X /* output status of ACTIVE flag (has the file been read in? */ X if (bp->b_active == TRUE) /* "@" if activated */ X *cp1++ = '@'; X else X *cp1++ = ' '; X X /* output status of changed flag */ X if ((bp->b_flag&BFCHG) != 0) /* "*" if changed */ X *cp1++ = '*'; X else X *cp1++ = ' '; X *cp1++ = ' '; /* Gap. */ X X /* output the mode codes */ X for (i = 0; i < NUMMODES; i++) { X if (bp->b_mode & (1 << i)) X *cp1++ = modecode[i]; X else X *cp1++ = '.'; X } X *cp1++ = ' '; /* Gap. */ X nbytes = 0L; /* Count bytes in buf. */ X lp = lforw(bp->b_linep); X while (lp != bp->b_linep) { X nbytes += (long)llength(lp)+1L; X lp = lforw(lp); X } X ltoa(b, 7, nbytes); /* 6 digit buffer size. */ X cp2 = &b[0]; X while ((c = *cp2++) != 0) X *cp1++ = c; X *cp1++ = ' '; /* Gap. */ X cp2 = &bp->b_bname[0]; /* Buffer name */ X while ((c = *cp2++) != 0) X *cp1++ = c; X cp2 = &bp->b_fname[0]; /* File name */ X if (*cp2 != 0) { X while (cp1 < &line[2+1+5+1+6+1+NBUFN]) X *cp1++ = ' '; X while ((c = *cp2++) != 0) { X if (cp1 < &line[128-1]) X *cp1++ = c; X } X } X *cp1 = 0; /* Add to the buffer. */ X if (addline(line) == FALSE) X return (FALSE); X bp = bp->b_bufp; X } X return (TRUE); /* All done */ X} X Xltoa(buf, width, num) X Xchar buf[]; Xint width; Xlong num; X X{ X buf[width] = 0; /* End of string. */ X while (num >= 10) { /* Conditional digits. */ X buf[--width] = (int)(num%10L) + '0'; X num /= 10L; X } X buf[--width] = (int)num + '0'; /* Always 1 digit. */ X while (width != 0) /* Pad with blanks. */ X buf[--width] = ' '; X} X X/* X * The argument "text" points to X * a string. Append this line to the X * buffer list buffer. Handcraft the EOL X * on the end. Return TRUE if it worked and X * FALSE if you ran out of room. X */ Xaddline(text) Xchar *text; X{ X register LINE *lp; X register int i; X register int ntext; X X ntext = strlen(text); X if ((lp=lalloc(ntext)) == NULL) X return (FALSE); X for (i=0; i<ntext; ++i) X lputc(lp, i, text[i]); X blistp->b_linep->l_bp->l_fp = lp; /* Hook onto the end */ X lp->l_bp = blistp->b_linep->l_bp; X blistp->b_linep->l_bp = lp; X lp->l_fp = blistp->b_linep; X if (blistp->b_dotp == blistp->b_linep) /* If "." is at the end */ X blistp->b_dotp = lp; /* move it to new line */ X return (TRUE); X} X X/* X * Look through the list of X * buffers. Return TRUE if there X * are any changed buffers. Buffers X * that hold magic internal stuff are X * not considered; who cares if the X * list of buffer names is hacked. X * Return FALSE if no buffers X * have been changed. X */ Xanycb() X{ X register BUFFER *bp; X X bp = bheadp; X while (bp != NULL) { X if ((bp->b_flag&BFINVS)==0 && (bp->b_flag&BFCHG)!=0) X return (TRUE); X bp = bp->b_bufp; X } X return (FALSE); X} X X/* X * Find a buffer, by name. Return a pointer X * to the BUFFER structure associated with it. X * If the buffer is not found X * and the "cflag" is TRUE, create it. The "bflag" is X * the settings for the flags in in buffer. X */ XBUFFER * Xbfind(bname, cflag, bflag) Xregister char *bname; X{ X register BUFFER *bp; X register BUFFER *sb; /* buffer to insert after */ X register LINE *lp; X char *malloc(); X X bp = bheadp; X while (bp != NULL) { X if (strcmp(bname, bp->b_bname) == 0) X return (bp); X bp = bp->b_bufp; X } X if (cflag != FALSE) { X if ((bp=(BUFFER *)malloc(sizeof(BUFFER))) == NULL) X return (NULL); X if ((lp=lalloc(0)) == NULL) { X free((char *) bp); X return (NULL); X } X /* find the place in the list to insert this buffer */ X if (bheadp == NULL || strcmp(bheadp->b_bname, bname) > 0) { X /* insert at the begining */ X bp->b_bufp = bheadp; X bheadp = bp; X } else { X sb = bheadp; X while (sb->b_bufp != NULL) { X if (strcmp(sb->b_bufp->b_bname, bname) > 0) X break; X sb = sb->b_bufp; X } X X /* and insert it */ X bp->b_bufp = sb->b_bufp; X sb->b_bufp = bp; X } X X /* and set up the other buffer fields */ X bp->b_active = TRUE; X bp->b_dotp = lp; X bp->b_doto = 0; X bp->b_markp = NULL; X bp->b_marko = 0; X bp->b_flag = bflag; X bp->b_mode = gmode; X bp->b_nwnd = 0; X bp->b_linep = lp; X strcpy(bp->b_fname, ""); X strcpy(bp->b_bname, bname); X lp->l_fp = lp; X lp->l_bp = lp; X } X return (bp); X} X X/* X * This routine blows away all of the text X * in a buffer. If the buffer is marked as changed X * then we ask if it is ok to blow it away; this is X * to save the user the grief of losing text. The X * window chain is nearly always wrong if this gets X * called; the caller must arrange for the updates X * that are required. Return TRUE if everything X * looks good. X */ Xbclear(bp) Xregister BUFFER *bp; X{ X register LINE *lp; X register int s; X X if ((bp->b_flag&BFINVS) == 0 /* Not scratch buffer. */ X && (bp->b_flag&BFCHG) != 0 /* Something changed */ X && (s=mlyesno("Discard changes")) != TRUE) X return (s); X bp->b_flag &= ~BFCHG; /* Not changed */ X while ((lp=lforw(bp->b_linep)) != bp->b_linep) X lfree(lp); X bp->b_dotp = bp->b_linep; /* Fix "." */ X bp->b_doto = 0; X bp->b_markp = NULL; /* Invalidate "mark" */ X bp->b_marko = 0; X return (TRUE); X} X Xunmark(f, n) /* unmark the current buffers change flag */ X Xint f, n; /* unused command arguments */ X X{ X curbp->b_flag &= ~BFCHG; X curwp->w_flag |= WFMODE; X return(TRUE); X} FRIDAY_NIGHT echo es.1 completed! : That's all folks!