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bbf253858a
Signed-off-by: Thiago Farina <tfransosi@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
707 lines
17 KiB
C
707 lines
17 KiB
C
/* WORD.C
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*
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* The routines in this file implement commands that work word or a
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* paragraph at a time. There are all sorts of word mode commands. If I
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* do any sentence mode commands, they are likely to be put in this file.
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*
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* modified by Petri Kutvonen
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*/
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#include <stdio.h>
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#include "estruct.h"
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#include "edef.h"
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#include "efunc.h"
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/* Word wrap on n-spaces. Back-over whatever precedes the point on the current
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* line and stop on the first word-break or the beginning of the line. If we
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* reach the beginning of the line, jump back to the end of the word and start
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* a new line. Otherwise, break the line at the word-break, eat it, and jump
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* back to the end of the word.
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* Returns TRUE on success, FALSE on errors.
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*
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* int f; default flag
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* int n; numeric argument
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*
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*/
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int wrapword(int f, int n)
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{
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int cnt; /* size of word wrapped to next line */
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int c; /* charector temporary */
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/* backup from the <NL> 1 char */
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if (!backchar(0, 1))
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return (FALSE);
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/* back up until we aren't in a word,
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make sure there is a break in the line */
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cnt = 0;
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while (((c = lgetc(curwp->w_dotp, curwp->w_doto)) != ' ')
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&& (c != '\t')) {
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cnt++;
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if (!backchar(0, 1))
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return (FALSE);
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/* if we make it to the beginning, start a new line */
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if (curwp->w_doto == 0) {
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gotoeol(FALSE, 0);
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return (lnewline());
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}
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}
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/* delete the forward white space */
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if (!forwdel(0, 1))
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return (FALSE);
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/* put in a end of line */
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if (!lnewline())
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return (FALSE);
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/* and past the first word */
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while (cnt-- > 0) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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return (TRUE);
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}
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/*
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* Move the cursor backward by "n" words. All of the details of motion are
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* performed by the "backchar" and "forwchar" routines. Error if you try to
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* move beyond the buffers.
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*/
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int backword(int f, int n)
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{
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if (n < 0)
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return (forwword(f, -n));
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if (backchar(FALSE, 1) == FALSE)
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return (FALSE);
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while (n--) {
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while (inword() == FALSE) {
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if (backchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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while (inword() != FALSE) {
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if (backchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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}
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return (forwchar(FALSE, 1));
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}
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/*
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* Move the cursor forward by the specified number of words. All of the motion
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* is done by "forwchar". Error if you try and move beyond the buffer's end.
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*/
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int forwword(int f, int n)
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{
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if (n < 0)
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return (backword(f, -n));
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while (n--) {
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while (inword() == TRUE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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}
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return (TRUE);
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}
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/*
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* Move the cursor forward by the specified number of words. As you move,
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* convert any characters to upper case. Error if you try and move beyond the
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* end of the buffer. Bound to "M-U".
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*/
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int upperword(int f, int n)
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{
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int c;
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if (curbp->b_mode & MDVIEW) /* don't allow this command if */
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return (rdonly()); /* we are in read only mode */
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if (n < 0)
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return (FALSE);
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while (n--) {
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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while (inword() != FALSE) {
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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#if PKCODE
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if (islower(c)) {
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#else
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if (c >= 'a' && c <= 'z') {
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#endif
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c -= 'a' - 'A';
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lputc(curwp->w_dotp, curwp->w_doto, c);
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lchange(WFHARD);
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}
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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}
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return (TRUE);
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}
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/*
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* Move the cursor forward by the specified number of words. As you move
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* convert characters to lower case. Error if you try and move over the end of
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* the buffer. Bound to "M-L".
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*/
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int lowerword(int f, int n)
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{
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int c;
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if (curbp->b_mode & MDVIEW) /* don't allow this command if */
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return (rdonly()); /* we are in read only mode */
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if (n < 0)
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return (FALSE);
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while (n--) {
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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while (inword() != FALSE) {
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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#if PKCODE
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if (isupper(c)) {
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#else
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if (c >= 'A' && c <= 'Z') {
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#endif
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c += 'a' - 'A';
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lputc(curwp->w_dotp, curwp->w_doto, c);
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lchange(WFHARD);
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}
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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}
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return (TRUE);
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}
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/*
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* Move the cursor forward by the specified number of words. As you move
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* convert the first character of the word to upper case, and subsequent
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* characters to lower case. Error if you try and move past the end of the
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* buffer. Bound to "M-C".
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*/
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int capword(int f, int n)
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{
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int c;
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if (curbp->b_mode & MDVIEW) /* don't allow this command if */
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return (rdonly()); /* we are in read only mode */
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if (n < 0)
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return (FALSE);
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while (n--) {
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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if (inword() != FALSE) {
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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#if PKCODE
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if (islower(c)) {
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#else
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if (c >= 'a' && c <= 'z') {
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#endif
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c -= 'a' - 'A';
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lputc(curwp->w_dotp, curwp->w_doto, c);
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lchange(WFHARD);
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}
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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while (inword() != FALSE) {
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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#if PKCODE
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if (isupper(c)) {
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#else
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if (c >= 'A' && c <= 'Z') {
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#endif
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c += 'a' - 'A';
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lputc(curwp->w_dotp, curwp->w_doto,
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c);
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lchange(WFHARD);
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}
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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}
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}
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}
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return (TRUE);
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}
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/*
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* Kill forward by "n" words. Remember the location of dot. Move forward by
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* the right number of words. Put dot back where it was and issue the kill
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* command for the right number of characters. With a zero argument, just
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* kill one word and no whitespace. Bound to "M-D".
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*/
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int delfword(int f, int n)
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{
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struct line *dotp; /* original cursor line */
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int doto; /* and row */
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int c; /* temp char */
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long size; /* # of chars to delete */
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/* don't allow this command if we are in read only mode */
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if (curbp->b_mode & MDVIEW)
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return (rdonly());
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/* ignore the command if there is a negative argument */
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if (n < 0)
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return (FALSE);
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/* Clear the kill buffer if last command wasn't a kill */
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if ((lastflag & CFKILL) == 0)
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kdelete();
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thisflag |= CFKILL; /* this command is a kill */
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/* save the current cursor position */
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dotp = curwp->w_dotp;
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doto = curwp->w_doto;
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/* figure out how many characters to give the axe */
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size = 0;
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/* get us into a word.... */
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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if (n == 0) {
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/* skip one word, no whitespace! */
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while (inword() == TRUE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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} else {
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/* skip n words.... */
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while (n--) {
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/* if we are at EOL; skip to the beginning of the next */
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while (curwp->w_doto == llength(curwp->w_dotp)) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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/* move forward till we are at the end of the word */
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while (inword() == TRUE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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/* if there are more words, skip the interword stuff */
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if (n != 0)
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while (inword() == FALSE) {
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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}
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/* skip whitespace and newlines */
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while ((curwp->w_doto == llength(curwp->w_dotp)) ||
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((c = lgetc(curwp->w_dotp, curwp->w_doto)) == ' ')
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|| (c == '\t')) {
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if (forwchar(FALSE, 1) == FALSE)
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break;
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++size;
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}
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}
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/* restore the original position and delete the words */
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curwp->w_dotp = dotp;
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curwp->w_doto = doto;
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return (ldelete(size, TRUE));
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}
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/*
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* Kill backwards by "n" words. Move backwards by the desired number of words,
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* counting the characters. When dot is finally moved to its resting place,
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* fire off the kill command. Bound to "M-Rubout" and to "M-Backspace".
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*/
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int delbword(int f, int n)
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{
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long size;
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/* don't allow this command if we are in read only mode */
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if (curbp->b_mode & MDVIEW)
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return (rdonly());
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/* ignore the command if there is a nonpositive argument */
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if (n <= 0)
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return (FALSE);
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/* Clear the kill buffer if last command wasn't a kill */
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if ((lastflag & CFKILL) == 0)
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kdelete();
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thisflag |= CFKILL; /* this command is a kill */
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if (backchar(FALSE, 1) == FALSE)
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return (FALSE);
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size = 0;
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while (n--) {
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while (inword() == FALSE) {
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if (backchar(FALSE, 1) == FALSE)
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return (FALSE);
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++size;
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}
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while (inword() != FALSE) {
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++size;
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if (backchar(FALSE, 1) == FALSE)
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goto bckdel;
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}
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}
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if (forwchar(FALSE, 1) == FALSE)
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return (FALSE);
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bckdel:return (ldelete(size, TRUE));
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}
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/*
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* Return TRUE if the character at dot is a character that is considered to be
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* part of a word. The word character list is hard coded. Should be setable.
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*/
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int inword(void)
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{
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int c;
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if (curwp->w_doto == llength(curwp->w_dotp))
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return (FALSE);
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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#if PKCODE
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if (isletter(c))
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#else
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if (c >= 'a' && c <= 'z')
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return (TRUE);
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if (c >= 'A' && c <= 'Z')
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#endif
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return (TRUE);
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if (c >= '0' && c <= '9')
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return (TRUE);
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return (FALSE);
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}
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#if WORDPRO
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/*
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* Fill the current paragraph according to the current
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* fill column
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*
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* f and n - deFault flag and Numeric argument
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*/
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int fillpara(int f, int n)
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{
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int c; /* current char durring scan */
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int wordlen; /* length of current word */
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int clength; /* position on line during fill */
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int i; /* index during word copy */
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int newlength; /* tentative new line length */
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int eopflag; /* Are we at the End-Of-Paragraph? */
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int firstflag; /* first word? (needs no space) */
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struct line *eopline; /* pointer to line just past EOP */
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int dotflag; /* was the last char a period? */
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char wbuf[NSTRING]; /* buffer for current word */
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if (curbp->b_mode & MDVIEW) /* don't allow this command if */
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return (rdonly()); /* we are in read only mode */
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if (fillcol == 0) { /* no fill column set */
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mlwrite("No fill column set");
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return (FALSE);
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}
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#if PKCODE
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justflag = FALSE;
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#endif
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/* record the pointer to the line just past the EOP */
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gotoeop(FALSE, 1);
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eopline = lforw(curwp->w_dotp);
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/* and back top the beginning of the paragraph */
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gotobop(FALSE, 1);
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/* initialize various info */
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clength = curwp->w_doto;
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if (clength && curwp->w_dotp->l_text[0] == TAB)
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clength = 8;
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wordlen = 0;
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dotflag = FALSE;
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/* scan through lines, filling words */
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firstflag = TRUE;
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eopflag = FALSE;
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while (!eopflag) {
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/* get the next character in the paragraph */
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if (curwp->w_doto == llength(curwp->w_dotp)) {
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c = ' ';
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if (lforw(curwp->w_dotp) == eopline)
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eopflag = TRUE;
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} else
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c = lgetc(curwp->w_dotp, curwp->w_doto);
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/* and then delete it */
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ldelete(1L, FALSE);
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/* if not a separator, just add it in */
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if (c != ' ' && c != '\t') {
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dotflag = (c == '.'); /* was it a dot */
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if (wordlen < NSTRING - 1)
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wbuf[wordlen++] = c;
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} else if (wordlen) {
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/* at a word break with a word waiting */
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/* calculate tentitive new length with word added */
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newlength = clength + 1 + wordlen;
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if (newlength <= fillcol) {
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/* add word to current line */
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if (!firstflag) {
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linsert(1, ' '); /* the space */
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++clength;
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}
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firstflag = FALSE;
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} else {
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/* start a new line */
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lnewline();
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clength = 0;
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}
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/* and add the word in in either case */
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for (i = 0; i < wordlen; i++) {
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linsert(1, wbuf[i]);
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++clength;
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}
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if (dotflag) {
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linsert(1, ' ');
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++clength;
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}
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wordlen = 0;
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}
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}
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/* and add a last newline for the end of our new paragraph */
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lnewline();
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return (TRUE);
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}
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#if PKCODE
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/* Fill the current paragraph according to the current
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* fill column and cursor position
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*
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* int f, n; deFault flag and Numeric argument
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*/
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int justpara(int f, int n)
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{
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int c; /* current char durring scan */
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int wordlen; /* length of current word */
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int clength; /* position on line during fill */
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int i; /* index during word copy */
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int newlength; /* tentative new line length */
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int eopflag; /* Are we at the End-Of-Paragraph? */
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int firstflag; /* first word? (needs no space) */
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struct line *eopline; /* pointer to line just past EOP */
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char wbuf[NSTRING]; /* buffer for current word */
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int leftmarg; /* left marginal */
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if (curbp->b_mode & MDVIEW) /* don't allow this command if */
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return (rdonly()); /* we are in read only mode */
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if (fillcol == 0) { /* no fill column set */
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mlwrite("No fill column set");
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return (FALSE);
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}
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justflag = TRUE;
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leftmarg = curwp->w_doto;
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if (leftmarg + 10 > fillcol) {
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leftmarg = 0;
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mlwrite("Column too narrow");
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return (FALSE);
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}
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/* record the pointer to the line just past the EOP */
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gotoeop(FALSE, 1);
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eopline = lforw(curwp->w_dotp);
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/* and back top the beginning of the paragraph */
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gotobop(FALSE, 1);
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/* initialize various info */
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if (leftmarg < llength(curwp->w_dotp))
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curwp->w_doto = leftmarg;
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clength = curwp->w_doto;
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if (clength && curwp->w_dotp->l_text[0] == TAB)
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clength = 8;
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wordlen = 0;
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|
|
|
/* scan through lines, filling words */
|
|
firstflag = TRUE;
|
|
eopflag = FALSE;
|
|
while (!eopflag) {
|
|
/* get the next character in the paragraph */
|
|
if (curwp->w_doto == llength(curwp->w_dotp)) {
|
|
c = ' ';
|
|
if (lforw(curwp->w_dotp) == eopline)
|
|
eopflag = TRUE;
|
|
} else
|
|
c = lgetc(curwp->w_dotp, curwp->w_doto);
|
|
|
|
/* and then delete it */
|
|
ldelete(1L, FALSE);
|
|
|
|
/* if not a separator, just add it in */
|
|
if (c != ' ' && c != '\t') {
|
|
if (wordlen < NSTRING - 1)
|
|
wbuf[wordlen++] = c;
|
|
} else if (wordlen) {
|
|
/* at a word break with a word waiting */
|
|
/* calculate tentitive new length with word added */
|
|
newlength = clength + 1 + wordlen;
|
|
if (newlength <= fillcol) {
|
|
/* add word to current line */
|
|
if (!firstflag) {
|
|
linsert(1, ' '); /* the space */
|
|
++clength;
|
|
}
|
|
firstflag = FALSE;
|
|
} else {
|
|
/* start a new line */
|
|
lnewline();
|
|
for (i = 0; i < leftmarg; i++)
|
|
linsert(1, ' ');
|
|
clength = leftmarg;
|
|
}
|
|
|
|
/* and add the word in in either case */
|
|
for (i = 0; i < wordlen; i++) {
|
|
linsert(1, wbuf[i]);
|
|
++clength;
|
|
}
|
|
wordlen = 0;
|
|
}
|
|
}
|
|
/* and add a last newline for the end of our new paragraph */
|
|
lnewline();
|
|
|
|
forwword(FALSE, 1);
|
|
if (llength(curwp->w_dotp) > leftmarg)
|
|
curwp->w_doto = leftmarg;
|
|
else
|
|
curwp->w_doto = llength(curwp->w_dotp);
|
|
|
|
justflag = FALSE;
|
|
return (TRUE);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* delete n paragraphs starting with the current one
|
|
*
|
|
* int f default flag
|
|
* int n # of paras to delete
|
|
*/
|
|
int killpara(int f, int n)
|
|
{
|
|
int status; /* returned status of functions */
|
|
|
|
while (n--) { /* for each paragraph to delete */
|
|
|
|
/* mark out the end and beginning of the para to delete */
|
|
gotoeop(FALSE, 1);
|
|
|
|
/* set the mark here */
|
|
curwp->w_markp = curwp->w_dotp;
|
|
curwp->w_marko = curwp->w_doto;
|
|
|
|
/* go to the beginning of the paragraph */
|
|
gotobop(FALSE, 1);
|
|
curwp->w_doto = 0; /* force us to the beginning of line */
|
|
|
|
/* and delete it */
|
|
if ((status = killregion(FALSE, 1)) != TRUE)
|
|
return (status);
|
|
|
|
/* and clean up the 2 extra lines */
|
|
ldelete(2L, TRUE);
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
|
|
/*
|
|
* wordcount: count the # of words in the marked region,
|
|
* along with average word sizes, # of chars, etc,
|
|
* and report on them.
|
|
*
|
|
* int f, n; ignored numeric arguments
|
|
*/
|
|
int wordcount(int f, int n)
|
|
{
|
|
struct line *lp; /* current line to scan */
|
|
int offset; /* current char to scan */
|
|
long size; /* size of region left to count */
|
|
int ch; /* current character to scan */
|
|
int wordflag; /* are we in a word now? */
|
|
int lastword; /* were we just in a word? */
|
|
long nwords; /* total # of words */
|
|
long nchars; /* total number of chars */
|
|
int nlines; /* total number of lines in region */
|
|
int avgch; /* average number of chars/word */
|
|
int status; /* status return code */
|
|
struct region region; /* region to look at */
|
|
|
|
/* make sure we have a region to count */
|
|
if ((status = getregion(®ion)) != TRUE)
|
|
return (status);
|
|
lp = region.r_linep;
|
|
offset = region.r_offset;
|
|
size = region.r_size;
|
|
|
|
/* count up things */
|
|
lastword = FALSE;
|
|
nchars = 0L;
|
|
nwords = 0L;
|
|
nlines = 0;
|
|
while (size--) {
|
|
|
|
/* get the current character */
|
|
if (offset == llength(lp)) { /* end of line */
|
|
ch = '\n';
|
|
lp = lforw(lp);
|
|
offset = 0;
|
|
++nlines;
|
|
} else {
|
|
ch = lgetc(lp, offset);
|
|
++offset;
|
|
}
|
|
|
|
/* and tabulate it */
|
|
wordflag = (
|
|
#if PKCODE
|
|
(isletter(ch)) ||
|
|
#else
|
|
(ch >= 'a' && ch <= 'z') ||
|
|
(ch >= 'A' && ch <= 'Z') ||
|
|
#endif
|
|
(ch >= '0' && ch <= '9'));
|
|
if (wordflag == TRUE && lastword == FALSE)
|
|
++nwords;
|
|
lastword = wordflag;
|
|
++nchars;
|
|
}
|
|
|
|
/* and report on the info */
|
|
if (nwords > 0L)
|
|
avgch = (int) ((100L * nchars) / nwords);
|
|
else
|
|
avgch = 0;
|
|
|
|
mlwrite("Words %D Chars %D Lines %d Avg chars/word %f",
|
|
nwords, nchars, nlines + 1, avgch);
|
|
return (TRUE);
|
|
}
|
|
#endif
|