Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site lsuc.UUCP Path: utzoo!lsuc!jimomura From: jimomura@lsuc.UUCP (Jim Omura) Newsgroups: net.micro.6809 Subject: MicroEMACS OS-9 Part 3 of 7 Message-ID: <1199@lsuc.UUCP> Date: Sun, 4-May-86 12:56:20 EDT Article-I.D.: lsuc.1199 Posted: Sun May 4 12:56:20 1986 Date-Received: Sun, 4-May-86 15:09:16 EDT Reply-To: jimomura@lsuc.UUCP (Jim Omura) Organization: Barrister & Solicitor, Toronto Lines: 828 Summary: Error: Unrecognized entry. Choices are: all, alsop, backward, comment, copy, date, download, duew, first, forward, header, help, last, original, quit, reference, resign, say, search, skip, to, unclop, upload, withdraw, No more unread Hit for next R:sh scracttch ========== os.9/public.domain #81, from jimomura, 3719 chars, Sat Mar 22 18:53:05 1986 ---------- TITLE: 'microEMACS' part 12 'uefile2.c' /* * The routines in this file * handle the reading and writing of * disk files. All of details about the * reading and writing of the disk are * in "fileio.c". */ #include #include "ueed.h" /* * Save the contents of the current * buffer in its associatd file. No nothing * if nothing has changed (this may be a bug, not a * feature). Error if there is no remembered file * name for the buffer. Bound to "C-X C-S". May * get called by "C-Z". */ filesave(f, n) { register WINDOW *wp; register int s; if ((curbp->b_flag&BFCHG) == 0) /* Return, no changes. */ return (TRUE); if (curbp->b_fname[0] == 0) { /* Must have a name. */ mlwrite("No file name"); return (FALSE); } if ((s=writeout(curbp->b_fname)) == TRUE) { curbp->b_flag &= ~BFCHG; wp = wheadp; /* Update mode lines. */ while (wp != NULL) { if (wp->w_bufp == curbp) wp->w_flag |= WFMODE; wp = wp->w_wndp; } } return (s); } /* * This function performs the details of file * writing. Uses the file management routines in the * "fileio.c" package. The number of lines written is * displayed. Sadly, it looks inside a LINE; provide * a macro for this. Most of the grief is error * checking of some sort. */ writeout(fn) char *fn; { register int s; register LINE *lp; register int nline; if ((s=ffwopen(fn)) != FIOSUC) /* Open writes message. */ return (FALSE); lp = lforw(curbp->b_linep); /* First line. */ nline = 0; /* Number of lines. */ while (lp != curbp->b_linep) { if ((s=ffputline(&lp->l_text[0], llength(lp))) != FIOSUC) break; ++nline; lp = lforw(lp); } if (s == FIOSUC) { /* No write error. */ s = ffclose(); if (s == FIOSUC) { /* No close error. */ if (nline == 1) mlwrite("[Wrote 1 line]"); else mlwrite("[Wrote %d lines]", nline); } } else /* Ignore close error */ ffclose(); /* if a write error. */ if (s != FIOSUC) /* Some sort of error. */ return (FALSE); return (TRUE); } /* * The command allows the user * to modify the file name associated with * the current buffer. It is like the "f" command * in UNIX "ed". The operation is simple; just zap * the name in the BUFFER structure, and mark the windows * as needing an update. You can type a blank line at the * prompt if you wish. */ filename(f, n) { register WINDOW *wp; register int s; char fname[NFILEN]; if ((s=mlreply("Name: ", fname, NFILEN)) == ABORT) return (s); if (s == FALSE) strcpy(curbp->b_fname, ""); else strcpy(curbp->b_fname, fname); wp = wheadp; /* Update mode lines. */ while (wp != NULL) { if (wp->w_bufp == curbp) wp->w_flag |= WFMODE; wp = wp->w_wndp; } return (TRUE); } ========== os.9/public.domain #82, from jimomura, 2796 chars, Sat Mar 22 18:58:32 1986 ---------- TITLE: 'microEMACS' part 13 'uefileio.c' /* * The routines in this file read and write ASCII files from the disk. All of * the knowledge about files are here. A better message writing scheme should * be used. */ #include #include "ueed.h" FILE *ffp; /* File pointer, all functions. */ /* * Open a file for reading. */ ffropen(fn) char *fn; { if ((ffp=fopen(fn, "r")) == NULL) return (FIOFNF); return (FIOSUC); } /* * Open a file for writing. Return TRUE if all is well, and FALSE on error * (cannot create). */ ffwopen(fn) char *fn; { #ifdef VMS register int fd; if ((fd=creat(fn, 0666, "rfm=var", "rat=cr")) < 0 || (ffp=fdopen(fd, "w")) == NULL) { #else if ((ffp=fopen(fn, "w")) == NULL) { #endif mlwrite("Cannot open file for writing"); return (FIOERR); } return (FIOSUC); } /* * Close a file. Should look at the status in all systems. */ ffclose() { #ifdef V7 if (fclose(ffp) != FALSE) { mlwrite("Error closing file"); return(FIOERR); } return(FIOSUC); #endif fclose(ffp); return (FIOSUC); } /* * Write a line to the already opened file. The "buf" points to the buffer, * and the "nbuf" is its length, less the free newline. Return the status. * Check only at the newline. */ ffputline(buf, nbuf) char buf[]; { register int i; for (i = 0; i < nbuf; ++i) putc(buf[i]&0xFF, ffp); putc('\n', ffp); if (ferror(ffp)) { mlwrite("Write I/O error"); return (FIOERR); } return (FIOSUC); } /* * Read a line from a file, and store the bytes in the supplied buffer. The * "nbuf" is the length of the buffer. Complain about long lines and lines * at the end of the file that don't have a newline present. Check for I/O * errors too. Return status. */ ffgetline(buf, nbuf) register char buf[]; { register int c; register int i; i = 0; while ((c = fgetc(ffp)) != EOF && c != '\n') { if (i >= nbuf-1) { mlwrite("File has long line"); return (FIOERR); } buf[i++] = c; } if (c == EOF) { if (ferror(ffp)) { mlwrite("File read error"); return (FIOERR); } if (i != 0) { mlwrite("File has funny line at EOF"); return (FIOERR); } return (FIOEOF); } buf[i] = 0; return (FIOSUC); } ========== os.9/public.domain #83, from jimomura, 7847 chars, Sat Mar 22 19:09:48 1986 ---------- TITLE: 'microEMACS' part 14 'ueline1.c' /* * The functions in this file are a general set of line management utilities. * They are the only routines that touch the text. They also touch the buffer * and window structures, to make sure that the necessary updating gets done. * There are routines in this file that handle the kill buffer too. It isn't * here for any good reason. * * Note that this code only updates the dot and mark values in the window list. * Since all the code acts on the current window, the buffer that we are * editing must be being displayed, which means that "b_nwnd" is non zero, * which means that the dot and mark values in the buffer headers are nonsense. */ #include #include "ueed.h" #define NBLOCK 16 /* Line block chunk size */ #define KBLOCK 256 /* Kill buffer block size */ char *kbufp = NULL; /* Kill buffer data */ int kused = 0; /* # of bytes used in KB */ int ksize = 0; /* # of bytes allocated in KB */ /* * This routine allocates a block of memory large enough to hold a LINE * containing "used" characters. The block is always rounded up a bit. Return * a pointer to the new block, or NULL if there isn't any memory left. Print a * message in the message line if no space. */ LINE *lalloc(used) register int used; { register LINE *lp; register int size; size = (used+NBLOCK-1) & ~(NBLOCK-1); if (size == 0) /* Assume that an empty */ size = NBLOCK; /* line is for type-in. */ if ((lp = (LINE *) malloc(sizeof(LINE)+size)) == NULL) { mlwrite("Cannot allocate %d bytes", size); return (NULL); } lp->l_size = size; lp->l_used = used; return (lp); } /* * Delete line "lp". Fix all of the links that might point at it (they are * moved to offset 0 of the next line. Unlink the line from whatever buffer it * might be in. Release the memory. The buffers are updated too; the magic * conditions described in the above comments don't hold here. */ lfree(lp) register LINE *lp; { register BUFFER *bp; register WINDOW *wp; wp = wheadp; while (wp != NULL) { if (wp->w_linep == lp) wp->w_linep = lp->l_fp; if (wp->w_dotp == lp) { wp->w_dotp = lp->l_fp; wp->w_doto = 0; } if (wp->w_markp == lp) { wp->w_markp = lp->l_fp; wp->w_marko = 0; } wp = wp->w_wndp; } bp = bheadp; while (bp != NULL) { if (bp->b_nwnd == 0) { if (bp->b_dotp == lp) { bp->b_dotp = lp->l_fp; bp->b_doto = 0; } if (bp->b_markp == lp) { bp->b_markp = lp->l_fp; bp->b_marko = 0; } } bp = bp->b_bufp; } lp->l_bp->l_fp = lp->l_fp; lp->l_fp->l_bp = lp->l_bp; free((char *) lp); } /* * This routine gets called when a character is changed in place in the current * buffer. It updates all of the required flags in the buffer and window * system. The flag used is passed as an argument; if the buffer is being * displayed in more than 1 window we change EDIT t HARD. Set MODE if the * mode line needs to be updated (the "*" has to be set). */ lchange(flag) register int flag; { register WINDOW *wp; if (curbp->b_nwnd != 1) /* Ensure hard. */ flag = WFHARD; if ((curbp->b_flag&BFCHG) == 0) { /* First change, so */ flag |= WFMODE; /* update mode lines. */ curbp->b_flag |= BFCHG; } wp = wheadp; while (wp != NULL) { if (wp->w_bufp == curbp) wp->w_flag |= flag; wp = wp->w_wndp; } } /* * Insert "n" copies of the character "c" at the current location of dot. In * the easy case all that happens is the text is stored in the line. In the * hard case, the line has to be reallocated. When the window list is updated, * take special care; I screwed it up once. You always update dot in the * current window. You update mark, and a dot in another window, if it is * greater than the place where you did the insert. Return TRUE if all is * well, and FALSE on errors. */ linsert(n, c) { register char *cp1; register char *cp2; register LINE *lp1; register LINE *lp2; register LINE *lp3; register int doto; register int i; register WINDOW *wp; lchange(WFEDIT); lp1 = curwp->w_dotp; /* Current line */ if (lp1 == curbp->b_linep) { /* At the end: special */ if (curwp->w_doto != 0) { mlwrite("bug: linsert"); return (FALSE); } if ((lp2=lalloc(n)) == NULL) /* Allocate new line */ return (FALSE); lp3 = lp1->l_bp; /* Previous line */ lp3->l_fp = lp2; /* Link in */ lp2->l_fp = lp1; lp1->l_bp = lp2; lp2->l_bp = lp3; for (i=0; il_text[i] = c; curwp->w_dotp = lp2; curwp->w_doto = n; return (TRUE); } doto = curwp->w_doto; /* Save for later. */ if (lp1->l_used+n > lp1->l_size) { /* Hard: reallocate */ if ((lp2=lalloc(lp1->l_used+n)) == NULL) return (FALSE); cp1 = &lp1->l_text[0]; cp2 = &lp2->l_text[0]; while (cp1 != &lp1->l_text[doto]) *cp2++ = *cp1++; cp2 += n; while (cp1 != &lp1->l_text[lp1->l_used]) *cp2++ = *cp1++; lp1->l_bp->l_fp = lp2; lp2->l_fp = lp1->l_fp; lp1->l_fp->l_bp = lp2; lp2->l_bp = lp1->l_bp; free((char *) lp1); } else { /* Easy: in place */ lp2 = lp1; /* Pretend new line */ lp2->l_used += n; cp2 = &lp1->l_text[lp1->l_used]; cp1 = cp2-n; while (cp1 != &lp1->l_text[doto]) *--cp2 = *--cp1; } for (i=0; il_text[doto+i] = c; wp = wheadp; /* Update windows */ while (wp != NULL) { if (wp->w_linep == lp1) wp->w_linep = lp2; if (wp->w_dotp == lp1) { wp->w_dotp = lp2; if (wp==curwp || wp->w_doto>doto) wp->w_doto += n; } if (wp->w_markp == lp1) { wp->w_markp = lp2; if (wp->w_marko > doto) wp->w_marko += n; } wp = wp->w_wndp; } return (TRUE); } ========== os.9/public.domain #84, from jimomura, 10631 chars, Sat Mar 22 19:25:11 1986 ---------- TITLE: 'microEMACS' part 15 'ueline2.c' /* * The functions in this file are a general set of line management utilities. * They are the only routines that touch the text. They also touch the buffer * and window structures, to make sure that the necessary updating gets done. * There are routines in this file that handle the kill buffer too. It i sn't * here for any good reason. * * Note that this code only updates the dot and mark values in the window list. * Since all the code acts on the current window, the buffer that we are * editing must be being displayed, which means that "b_nwnd" is non zero, * which means that the dot and mark values in the buffer headers are nonsense. */ #include #include "ueed.h" #define NBLOCK 16 /* Line block chunk size */ #define KBLOCK 256 /* Kill buffer block size */ extern char *kbufp; /* Kill buffer data */ extern int kused; /* # of bytes used in KB */ extern int ksize; /* # of bytes allocated in KB */ /* * Insert a newline into the buffer at the current location of dot in the * current window. The funny ass-backwards way it does things is not a botch; * it just makes the last line in the file not a special case. Return TRUE if * everything works out and FALSE on error (memory allocation failure). The * update of dot and mark is a bit easier then in the above case, because the * split forces more updating. */ lnewline() { register char *cp1; register char *cp2; register LINE *lp1; register LINE *lp2; register int doto; register WINDOW *wp; lchange(WFHARD); lp1 = curwp->w_dotp; /* Get the address and */ doto = curwp->w_doto; /* offset of "." */ if ((lp2=lalloc(doto)) == NULL) /* New first half line */ return (FALSE); cp1 = &lp1->l_text[0]; /* Shuffle text around */ cp2 = &lp2->l_text[0]; while (cp1 != &lp1->l_text[doto]) *cp2++ = *cp1++; cp2 = &lp1->l_text[0]; while (cp1 != &lp1->l_text[lp1->l_used]) *cp2++ = *cp1++; lp1->l_used -= doto; lp2->l_bp = lp1->l_bp; lp1->l_bp = lp2; lp2->l_bp->l_fp = lp2; lp2->l_fp = lp1; wp = wheadp; /* Windows */ while (wp != NULL) { if (wp->w_linep == lp1) wp->w_linep = lp2; if (wp->w_dotp == lp1) { if (wp->w_doto < doto) wp->w_dotp = lp2; else wp->w_doto -= doto; } if (wp->w_markp == lp1) { if (wp->w_marko < doto) wp->w_markp = lp2; else wp->w_marko -= doto; } wp = wp->w_wndp; } return (TRUE); } /* * This function deletes "n" bytes, starting at dot. It understands how do deal * with end of lines, etc. It returns TRUE if all of the characters were * deleted, and FALSE if they were not (because dot ran into the end of the * buffer. The "kflag" is TRUE if the text should be put in the kill buffer. */ ldelete(n, kflag) { register char *cp1; register char *cp2; register LINE *dotp; register int doto; register int chunk; register WINDOW *wp; while (n != 0) { dotp = curwp->w_dotp; doto = curwp->w_doto; if (dotp == curbp->b_linep) /* Hit end of buffer. */ return (FALSE); chunk = dotp->l_used-doto; /* Size of chunk. */ if (chunk > n) chunk = n; if (chunk == 0) { /* End of line, merge. */ lchange(WFHARD); if (ldelnewline() == FALSE || (kflag!=FALSE && kinsert('\n')==FALSE)) return (FALSE); --n; continue; } lchange(WFEDIT); cp1 = &dotp->l_text[doto]; /* Scrunch text. */ cp2 = cp1 + chunk; if (kflag != FALSE) { /* Kill? */ while (cp1 != cp2) { if (kinsert(*cp1) == FALSE) return (FALSE); ++cp1; } cp1 = &dotp->l_text[doto]; } while (cp2 != &dotp->l_text[dotp->l_used]) *cp1++ = *cp2++; dotp->l_used -= chunk; wp = wheadp; /* Fix windows */ while (wp != NULL) { if (wp->w_dotp==dotp && wp->w_doto>=doto) { wp->w_doto -= chunk; if (wp->w_doto < doto) wp->w_doto = doto; } if (wp->w_markp==dotp && wp->w_marko>=doto) { wp->w_marko -= chunk; if (wp->w_marko < doto) wp->w_marko = doto; } wp = wp->w_wndp; } n -= chunk; } return (TRUE); } /* * Delete a newline. Join the current line with the next line. If the next line * is the magic header line always return TRUE; merging the last line with the * header line can be thought of as always being a successful operation, even * if nothing is done, and this makes the kill buffer work "right". Easy cases * can be done by shuffling data around. Hard cases require that lines be moved * about in memory. Return FALSE on error and TRUE if all looks ok. Called by * "ldelete" only. */ ldelnewline() { register char *cp1; register char *cp2; register LINE *lp1; register LINE *lp2; register LINE *lp3; register WINDOW *wp; lp1 = curwp->w_dotp; lp2 = lp1->l_fp; if (lp2 == curbp->b_linep) { /* At the buffer end. */ if (lp1->l_used == 0) /* Blank line. */ lfree(lp1); return (TRUE); } if (lp2->l_used <= lp1->l_size-lp1->l_used) { cp1 = &lp1->l_text[lp1->l_used]; cp2 = &lp2->l_text[0]; while (cp2 != &lp2->l_text[lp2->l_used]) *cp1++ = *cp2++; wp = wheadp; while (wp != NULL) { if (wp->w_linep == lp2) wp->w_linep = lp1; if (wp->w_dotp == lp2) { wp->w_dotp = lp1; wp->w_doto += lp1->l_used; } if (wp->w_markp == lp2) { wp->w_markp = lp1; wp->w_marko += lp1->l_used; } wp = wp->w_wndp; } lp1->l_used += lp2->l_used; lp1->l_fp = lp2->l_fp; lp2->l_fp->l_bp = lp1; free((char *) lp2); return (TRUE); } if ((lp3=lalloc(lp1->l_used+lp2->l_used)) == NULL) return (FALSE); cp1 = &lp1->l_text[0]; cp2 = &lp3->l_text[0]; while (cp1 != &lp1->l_text[lp1->l_used]) *cp2++ = *cp1++; cp1 = &lp2->l_text[0]; while (cp1 != &lp2->l_text[lp2->l_used]) *cp2++ = *cp1++; lp1->l_bp->l_fp = lp3; lp3->l_fp = lp2->l_fp; lp2->l_fp->l_bp = lp3; lp3->l_bp = lp1->l_bp; wp = wheadp; while (wp != NULL) { if (wp->w_linep==lp1 || wp->w_linep==lp2) wp->w_linep = lp3; if (wp->w_dotp == lp1) wp->w_dotp = lp3; else if (wp->w_dotp == lp2) { wp->w_dotp = lp3; wp->w_doto += lp1->l_used; } if (wp->w_markp == lp1) wp->w_markp = lp3; else if (wp->w_markp == lp2) { wp->w_markp = lp3; wp->w_marko += lp1->l_used; } wp = wp->w_wndp; } free((char *) lp1); free((char *) lp2); return (TRUE); } /* * Delete all of the text saved in the kill buffer. Called by commands when a * new kill context is being created. The kill buffer array is released, just * in case the buffer has grown to immense size. No errors. */ kdelete() { if (kbufp != NULL) { free((char *) kbufp); kbufp = NULL; kused = 0; ksize = 0; } } /* * Insert a character to the kill buffer, enlarging the buffer if there isn't * any room. Always grow the buffer in chunks, on the assumption that if you * put something in the kill buffer you are going to put more stuff there too * later. Return TRUE if all is well, and FALSE on errors. */ kinsert(c) { register char *nbufp; register int i; if (kused == ksize) { if ((nbufp=malloc(ksize+KBLOCK)) == NULL) return (FALSE); for (i=0; i= kused) return (-1); else return (kbufp[n] & 0xFF); } ========== os.9/public.domain #85, from jimomura, 2886 chars, Sat Mar 22 19:30:20 1986 ---------- TITLE: 'microEMACS' part 16 'uemacs.doc' MicroEMACS control sequences for 6809 OS9 version For Os9/68000 consult the source code. Note: For the Color Computer /TERM version, the key is and keys together. is the key. del is the <<-> key. The window commands have been deleted. Therefore, there is only one window. Set Mark at current position. Move cursor to beginning of line. Move cursor BACK one character. Push to a new interactive command shell. DELETE current current character. Move cursor to END of line. Move cursor FORWARD one character. Abort any command. (shades of Teco). (backspace) delete previous character. KILL (delete) to end of line. Redisplay screen. Move cursor to NEXT line. OPEN a new line. Move to PREVIOUS line. QUOTE the next character (insert the next character typed). REVERSE Search. Forward SEARCH. TRANSPOSE characters. Enter repeat count for next command. VIEW the next screen (scroll up one screen). Kill region (all text between cursor and last mark set). YANK (undelete) last text killed (deleted). Save file in current buffer and exit. = Show buffer statistics: X=cc Y=ll CH=$$ .=loc (nn% of total chars) ( Begin keyboard Macro. ) End keyboard Macro. E EXECUTE keyboard macro. Exit without saving buffers. Scroll current window up by repeat count lines. Scroll current window down by repeat count lines. READ file into current buffer. SAVE (write) current buffer into its file. WRITE buffer to file. UPPERCASE region between cursor and mark. LOWERCASE region between cursor and mark. Swap cursor and mark positions. delete previous character. . Set Mark at current position. ! Move current line to repeat count lines from top of window. > Move cursor to end of buffer. < Move cursor to beginning of buffer. B Move cursor BACK one word. C CAPITALIZE (Capitalize) word. D DELETE next word. DELETE previous word. F Move cursor FORWARD one word. L LOWERCASE (lowercase) next word. U UPPERCASE (UPPERCASE) next word. V VIEW the previous screen (scroll down one screen). -- James Omura, Barrister & Solicitor, Toronto ihnp4!utzoo!lsuc!jimomura Byte Information eXchange: jimomura (416) 652-3880