%%s 0/0/0
%%d D 1.1 25-Mar-82 12:15:17 v1.1 1 0
%%c Version 1.1 is the Spring 1982 Distribution of the LBL/Hughes release
%%c of the Software Tools Virtual Operating System software and documentation.
%%T
%%I 1
#-h- split.r         1792  asc  25-mar-82 08:54:39  v1.1 (sw-tools v1.1)
#-h- main             832  asc  25-mar-82 08:54:17  v1.1 (sw-tools v1.1)
 ## split - split a file into pieces
 DRIVER(split)
 
 integer getarg, create, open, ctoi, nlcopy
 character buf(MAXLINE), outf(FILENAMESIZE)
 integer nl, i, j, in, usein, out
 data outf(1), outf(2) / 'x', EOS/
 
 call query("usage:  split [-n] [file [name]].")
 nl = 1000
 usein = NO
 in = STDIN
 			#pick up file name(s)
 for (i=1; getarg(i,buf,MAXLINE)!=EOF; i=i+1)
	{
	if (buf(1) == '-')
		{
		if (buf(2) == EOS)
			usein = YES
		else
			{
			j = 2
			nl = max(ctoi(buf,j), 1)
			}
		}
	else if (usein == NO)
		{
		in = open(buf,READ)
		if (in == ERR)
			call cant(buf)
		usein = YES
		}
	else
		call scopy(buf, 1, outf, 1)
	}
 
	#main loop to break up file
 repeat
	{
	call extnam(outf, buf)
	out = create(buf, WRITE)
	if (out == ERR)
		call cant(buf)
	if (nlcopy(in, out, nl) == EOF)
		break
	call close(out)
	}
 DRETURN
 end
#-h- extnam           447  asc  25-mar-82 08:54:18  v1.1 (sw-tools v1.1)
 ## extnam - add unique extension to filename -file-
 subroutine extnam (file, name)
 character file(ARB), name(ARB), append(3)
 integer length
 
 data append(1), append(2), append(3) /'a', 'a', EOS/
 
 call scopy(file, 1, name, 1)
 if (append(2) > 'z')
	{
	append(2) = 'a'
	append(1) = append(1) + 1
	if (append(1) > 'z')
		call error ("out of file names.")
	}
 call scopy(append, 1, name, length(name)+1)
 append(2) = append(2) + 1
 return
 end
#-h- nlcopy           294  asc  25-mar-82 08:54:20  v1.1 (sw-tools v1.1)
 ## nlcopy - copy n lines from file in to file out
 integer function nlcopy (in, out, n)
 character buf(MAXLINE)
 integer getlin
 integer in, out, n, i
 
 for (i=1; i<=n; i=i+1)
	{
	if (getlin(buf,in) == EOF)
		{
		nlcopy = EOF
		return
		}
	call putlin(buf, out)
 	}
 nlcopy = OK
 return
 end
#-h- split.fmt        566  asc  25-mar-82 08:54:41  v1.1 (sw-tools v1.1)
.so ~bin/manhdr
.hd Split (1) 11-Jan-79
split a file into pieces
.sy
split [-n] [file [name] ]
.ds
Split reads `file' and writes it in n-line pieces (default 1000),
as many as necessary, onto a set of output files.
The name of the output file is `name' with `aa' appended, and so on 
lexicographically.
If no output name is given, `x' is default.
 
If no input file is given, or if - is given in its stead, then the
standard input file is used.
.fl
.sa
The Unix command 'split'
.di
A message is printed if the input file could not be opened.
.au
Debbie Scherrer
.bu
%%E 1