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1 /* join.c */
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2 #include <stdio.h>
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3 #include "tools.h"
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4 #include "ed.h"
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5
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6 extern int fchanged;
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7
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8 int join(first, last)
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9 int first, last;
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10 {
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11 char buf[MAXLINE];
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12 char *cp = buf, *str;
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13 int num;
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14
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15 if (first <= 0 || first > last || last > lastln) return(ERR);
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16 if (first == last) {
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17 curln = first;
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18 return 0;
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19 }
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20 for (num = first; num <= last; num++) {
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21 str = gettxt(num);
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22
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23 while (*str != NL && cp < buf + MAXLINE - 1) *cp++ = *str++;
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24
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25 if (cp == buf + MAXLINE - 1) {
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26 printf("line too long\n");
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27 return(ERR);
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28 }
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29 }
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30 *cp++ = NL;
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31 *cp = EOS;
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32 del(first, last);
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33 curln = first - 1;
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34 ins(buf);
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35 fchanged = TRUE;
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36 return 0;
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37 }
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38
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