diff options
Diffstat (limited to 'sort.c')
| -rw-r--r-- | sort.c | 28 |
1 files changed, 21 insertions, 7 deletions
@@ -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; @@ -57,6 +60,11 @@ int sort_main(int argc, char **argv) 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 + 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 - for (i = 0; i < nlines; i++) - puts(lines[i]); + puts(lines[i]); return EXIT_SUCCESS; } |