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Diffstat (limited to 'pkg/bench/xctest/unique.x')
| -rw-r--r-- | pkg/bench/xctest/unique.x | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/pkg/bench/xctest/unique.x b/pkg/bench/xctest/unique.x new file mode 100644 index 00000000..fcabfe00 --- /dev/null +++ b/pkg/bench/xctest/unique.x @@ -0,0 +1,46 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +# UNIQUE -- Pass only unique lines from the (presumably sorted) standard +# input to the standard output. In other words, if a sequence of identical +# lines are found in the input, only one copy is passed to the output. + +procedure t_unique() + +int list, fd +pointer sp, fname, old_line, new_line, temp +bool streq() +int getline(), clpopni(), clgfil(), clplen(), open() + +begin + call smark (sp) + call salloc (fname, SZ_FNAME, TY_CHAR) + call salloc (old_line, SZ_LINE, TY_CHAR) + call salloc (new_line, SZ_LINE, TY_CHAR) + + list = clpopni ("files") + + while (clgfil (list, Memc[fname], SZ_FNAME) != EOF) { + fd = open (Memc[fname], READ_ONLY, TEXT_FILE) + if (clplen (list) > 1) { + call printf ("\n\n==> %s <==\n") + call pargstr (Memc[fname]) + } + + Memc[old_line] = EOS + + while (getline (fd, Memc[new_line]) != EOF) { + if (streq (Memc[old_line], Memc[new_line])) + next + call putline (STDOUT, Memc[new_line]) + + # Swap buffers. + temp = old_line + old_line = new_line + new_line = temp + } + + call close (fd) + } + + call sfree (sp) +end |