int sort_main(int argc, char **argv)
{
FILE *fp, *outfile = stdout;
char *line, **lines = NULL;
char *str_ignored, *str_o, *str_t;
llist_t *lst_k = NULL;
int i, flag;
int linecount = 0;
xfunc_error_retval = 2;
/* Parse command line options */
/* -o and -t can be given at most once */
opt_complementary = "o--o:t--t:" /* -t, -o: maximum one of each */
"k::"; /* -k takes list */
getopt32(argv, OPT_STR, &str_ignored, &str_ignored, &str_o, &lst_k, &str_t);
#if ENABLE_FEATURE_SORT_BIG
if (option_mask32 & FLAG_o) outfile = xfopen(str_o, "w");
if (option_mask32 & FLAG_t) {
if (!str_t[0] || str_t[1])
bb_error_msg_and_die("bad -t parameter");
key_separator = str_t[0];
}
/* parse sort key */
while (lst_k) {
enum {
FLAG_allowed_for_k =
FLAG_n | /* Numeric sort */
FLAG_g | /* Sort using strtod() */
FLAG_M | /* Sort date */
FLAG_b | /* Ignore leading blanks */
FLAG_r | /* Reverse */
FLAG_d | /* Ignore !(isalnum()|isspace()) */
FLAG_f | /* Force uppercase */
FLAG_i | /* Ignore !isprint() */
0
};
struct sort_key *key = add_key();
char *str_k = lst_k->data;
const char *temp2;
i = 0; /* i==0 before comma, 1 after (-k3,6) */
while (*str_k) {
/* Start of range */
/* Cannot use bb_strtou - suffix can be a letter */
key->range[2*i] = str2u(&str_k);
if (*str_k == '.') {
str_k++;
key->range[2*i+1] = str2u(&str_k);
}
while (*str_k) {
if (*str_k == ',' && !i++) {
str_k++;
break;
} /* no else needed: fall through to syntax error
because comma isn't in OPT_STR */
temp2 = strchr(OPT_STR, *str_k);
if (!temp2)
bb_error_msg_and_die("unknown key option");
flag = 1 << (temp2 - OPT_STR);
if (flag & ~FLAG_allowed_for_k)
bb_error_msg_and_die("unknown sort type");
/* b after ',' means strip _trailing_ space */
if (i && flag == FLAG_b) flag = FLAG_bb;
key->flags |= flag;
str_k++;
}
}
/* leaking lst_k... */
lst_k = lst_k->link;
}
#endif
/* global b strips leading and trailing spaces */
if (option_mask32 & FLAG_b) option_mask32 |= FLAG_bb;
/* Open input files and read data */
for (i = argv[optind] ? optind : optind-1; argv[i]; i++) {
fp = stdin;
if (i >= optind && NOT_LONE_DASH(argv[i]))
fp = xfopen(argv[i], "r");
for (;;) {
line = GET_LINE(fp);
if (!line) break;
if (!(linecount & 63))
lines = xrealloc(lines, sizeof(char *) * (linecount + 64));
lines[linecount++] = line;
}
fclose(fp);
}
#if ENABLE_FEATURE_SORT_BIG
/* if no key, perform alphabetic sort */
if (!key_list)
add_key()->range[0] = 1;
/* handle -c */
if (option_mask32 & FLAG_c) {
int j = (option_mask32 & FLAG_u) ? -1 : 0;
for (i = 1; i < linecount; i++)
if (compare_keys(&lines[i-1], &lines[i]) > j) {
fprintf(stderr, "Check line %d\n", i);
return 1;
}
return 0;
}
#endif
/* Perform the actual sort */
qsort(lines, linecount, sizeof(char *), compare_keys);
/* handle -u */
if (option_mask32 & FLAG_u) {
flag = 0;
/* coreutils 6.3 drop lines for which only key is the same */
/* -- disabling last-resort compare... */
option_mask32 |= FLAG_s;
for (i = 1; i < linecount; i++) {
if (!compare_keys(&lines[flag], &lines[i]))
free(lines[i]);
else
lines[++flag] = lines[i];
}
if (linecount) linecount = flag+1;
}
/* Print it */
for (i = 0; i < linecount; i++)
fprintf(outfile, "%s\n", lines[i]);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
int sort_main(int argc UNUSED_PARAM, char **argv)
{
char *line, **lines;
char *str_ignored, *str_o, *str_t;
llist_t *lst_k = NULL;
int i, flag;
int linecount;
unsigned opts;
xfunc_error_retval = 2;
/* Parse command line options */
/* -o and -t can be given at most once */
opt_complementary = "o--o:t--t:" /* -t, -o: at most one of each */
"k::"; /* -k takes list */
opts = getopt32(argv, OPT_STR, &str_ignored, &str_ignored, &str_o, &lst_k, &str_t);
/* global b strips leading and trailing spaces */
if (opts & FLAG_b)
option_mask32 |= FLAG_bb;
#if ENABLE_FEATURE_SORT_BIG
if (opts & FLAG_t) {
if (!str_t[0] || str_t[1])
bb_error_msg_and_die("bad -t parameter");
key_separator = str_t[0];
}
/* note: below this point we use option_mask32, not opts,
* since that reduces register pressure and makes code smaller */
/* parse sort key */
while (lst_k) {
enum {
FLAG_allowed_for_k =
FLAG_n | /* Numeric sort */
FLAG_g | /* Sort using strtod() */
FLAG_M | /* Sort date */
FLAG_b | /* Ignore leading blanks */
FLAG_r | /* Reverse */
FLAG_d | /* Ignore !(isalnum()|isspace()) */
FLAG_f | /* Force uppercase */
FLAG_i | /* Ignore !isprint() */
0
};
struct sort_key *key = add_key();
char *str_k = llist_pop(&lst_k);
i = 0; /* i==0 before comma, 1 after (-k3,6) */
while (*str_k) {
/* Start of range */
/* Cannot use bb_strtou - suffix can be a letter */
key->range[2*i] = str2u(&str_k);
if (*str_k == '.') {
str_k++;
key->range[2*i+1] = str2u(&str_k);
}
while (*str_k) {
const char *temp2;
if (*str_k == ',' && !i++) {
str_k++;
break;
} /* no else needed: fall through to syntax error
because comma isn't in OPT_STR */
temp2 = strchr(OPT_STR, *str_k);
if (!temp2)
bb_error_msg_and_die("unknown key option");
flag = 1 << (temp2 - OPT_STR);
if (flag & ~FLAG_allowed_for_k)
bb_error_msg_and_die("unknown sort type");
/* b after ',' means strip _trailing_ space */
if (i && flag == FLAG_b)
flag = FLAG_bb;
key->flags |= flag;
str_k++;
}
}
}
#endif
/* Open input files and read data */
argv += optind;
if (!*argv)
*--argv = (char*)"-";
linecount = 0;
lines = NULL;
do {
/* coreutils 6.9 compat: abort on first open error,
* do not continue to next file: */
FILE *fp = xfopen_stdin(*argv);
for (;;) {
line = GET_LINE(fp);
if (!line)
break;
lines = xrealloc_vector(lines, 6, linecount);
lines[linecount++] = line;
}
fclose_if_not_stdin(fp);
} while (*++argv);
#if ENABLE_FEATURE_SORT_BIG
/* if no key, perform alphabetic sort */
if (!key_list)
add_key()->range[0] = 1;
/* handle -c */
if (option_mask32 & FLAG_c) {
int j = (option_mask32 & FLAG_u) ? -1 : 0;
for (i = 1; i < linecount; i++) {
if (compare_keys(&lines[i-1], &lines[i]) > j) {
fprintf(stderr, "Check line %u\n", i);
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
#endif
/* Perform the actual sort */
qsort(lines, linecount, sizeof(lines[0]), compare_keys);
/* handle -u */
if (option_mask32 & FLAG_u) {
flag = 0;
/* coreutils 6.3 drop lines for which only key is the same */
/* -- disabling last-resort compare... */
option_mask32 |= FLAG_s;
for (i = 1; i < linecount; i++) {
if (compare_keys(&lines[flag], &lines[i]) == 0)
free(lines[i]);
else
lines[++flag] = lines[i];
}
if (linecount)
linecount = flag+1;
}
/* Print it */
#if ENABLE_FEATURE_SORT_BIG
/* Open output file _after_ we read all input ones */
if (option_mask32 & FLAG_o)
xmove_fd(xopen(str_o, O_WRONLY|O_CREAT|O_TRUNC), STDOUT_FILENO);
#endif
flag = (option_mask32 & FLAG_z) ? '\0' : '\n';
for (i = 0; i < linecount; i++)
printf("%s%c", lines[i], flag);
fflush_stdout_and_exit(EXIT_SUCCESS);
}