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Applied patch from I.Q. to add sort -u as a feature.

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This commit is contained in:
Mark Whitley
2001-04-17 18:56:18 +00:00
parent 6e808ca354
commit fccaa3629b
6 changed files with 79 additions and 21 deletions
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28
coreutils/sort.c
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@@ -46,8 +46,11 @@ int sort_main(int argc, char **argv)
#ifdef BB_FEATURE_SORT_REVERSE
int reverse = FALSE;
#endif
#ifdef BB_FEATURE_SORT_UNIQUE
int unique = FALSE;
#endif
while ((opt = getopt(argc, argv, "nr")) != -1) {
while ((opt = getopt(argc, argv, "nru")) != -1) {
switch (opt) {
case 'n':
compare = compare_numeric;
@@ -56,6 +59,11 @@ int sort_main(int argc, char **argv)
case 'r':
reverse = TRUE;
break;
#endif
#ifdef BB_FEATURE_SORT_UNIQUE
case 'u':
unique = TRUE;
break;
#endif
default:
show_usage();
@@ -81,12 +89,18 @@ int sort_main(int argc, char **argv)
/* print it */
#ifdef BB_FEATURE_SORT_REVERSE
if (reverse)
for (i = nlines - 1; 0 <= i; i--)
puts(lines[i]);
else
if (reverse) {
for (i = --nlines; 0 <= i; i--)
#ifdef BB_FEATURE_SORT_UNIQUE
if((!unique) || (i == nlines) || (strcmp(lines[i + 1], lines[i])))
#endif
for (i = 0; i < nlines; i++)
puts(lines[i]);
puts(lines[i]);
} else
#endif
for (i = 0; i < nlines; i++)
#ifdef BB_FEATURE_SORT_UNIQUE
if((!unique) || (!i) || (strcmp(lines[i - 1], lines[i])))
#endif
puts(lines[i]);
return EXIT_SUCCESS;
}