int cat_main(int argc, char **argv)
{
FILE *f;
int retval = EXIT_SUCCESS;
bb_getopt_ulflags(argc, argv, "u");
argv += optind;
if (!*argv) {
*--argv = "-";
}
do {
if ((f = bb_wfopen_input(*argv)) != NULL) {
int r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
bb_fclose_nonstdin(f);
if (r >= 0) {
continue;
}
}
retval = EXIT_FAILURE;
} while (*++argv);
return retval;
}
int sort_main(int argc, char **argv)
{
FILE *fp;
char *line, **lines = NULL;
int i, nlines = 0, inc;
int (*compare)(const void *, const void *) = compare_ascii;
int flags;
bb_default_error_retval = 2;
flags = bb_getopt_ulflags(argc, argv, "nru");
if (flags & 1) {
compare = compare_numeric;
}
argv += optind;
if (!*argv) {
*--argv = "-";
}
do {
fp = xgetoptfile_sort_uniq(argv, "r");
while ((line = bb_get_chomped_line_from_file(fp)) != NULL) {
lines = xrealloc(lines, sizeof(char *) * (nlines + 1));
lines[nlines++] = line;
}
bb_xferror(fp, *argv);
bb_fclose_nonstdin(fp);
} while (*++argv);
/* sort it */
qsort(lines, nlines, sizeof(char *), compare);
/* print it */
i = 0;
--nlines;
if ((inc = 1 - (flags & 2)) < 0) { /* reverse */
i = nlines;
}
flags &= 4;
while (nlines >= 0) {
if (!flags || !nlines || strcmp(lines[i+inc], lines[i])) {
puts(lines[i]);
}
i += inc;
--nlines;
}
bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}
extern int fold_main(int argc, char **argv)
{
/* If nonzero, try to break on whitespace. */
int break_spaces;
/* If nonzero, at least one of the files we read was standard input. */
int have_read_stdin;
int width = 80;
int i;
int optc;
int errs = 0;
break_spaces = count_bytes = have_read_stdin = 0;
/* Turn any numeric options into -w options. */
for (i = 1; i < argc; i++) {
char const *a = argv[i];
if (a[0] == '-') {
if (a[1] == '-' && !a[2])
break;
if (isdigit(a[1])) {
char *s = xmalloc(strlen(a) + 2);
s[0] = '-';
s[1] = 'w';
strcpy(s + 2, a + 1);
argv[i] = s;
}
}
}
while ((optc = getopt(argc, argv, "bsw:")) > 0) {
switch (optc) {
case 'b': /* Count bytes rather than columns. */
count_bytes = 1;
break;
case 's': /* Break at word boundaries. */
break_spaces = 1;
break;
case 'w': { /* Line width. */
width = bb_xgetlarg(optarg, 10, 1, 10000);
break;
}
default:
bb_show_usage();
}
}
argv += optind;
if (!*argv) {
*--argv = "-";
}
do {
FILE *istream = bb_wfopen_input(*argv);
if (istream != NULL) {
int c;
int column = 0; /* Screen column where next char will go. */
int offset_out = 0; /* Index in `line_out' for next char. */
static char *line_out = NULL;
static int allocated_out = 0;
while ((c = getc(istream)) != EOF) {
if (offset_out + 1 >= allocated_out) {
allocated_out += 1024;
line_out = xrealloc(line_out, allocated_out);
}
if (c == '\n') {
line_out[offset_out++] = c;
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
column = offset_out = 0;
continue;
}
rescan:
column = adjust_column(column, c);
if (column > width) {
/* This character would make the line too long.
Print the line plus a newline, and make this character
start the next line. */
if (break_spaces) {
/* Look for the last blank. */
int logical_end;
for (logical_end = offset_out - 1; logical_end >= 0; logical_end--) {
if (isblank(line_out[logical_end])) {
break;
}
}
if (logical_end >= 0) {
/* Found a blank. Don't output the part after it. */
logical_end++;
fwrite(line_out, sizeof(char), (size_t) logical_end, stdout);
putchar('\n');
/* Move the remainder to the beginning of the next line.
The areas being copied here might overlap. */
memmove(line_out, line_out + logical_end, offset_out - logical_end);
offset_out -= logical_end;
for (column = i = 0; i < offset_out; i++) {
column = adjust_column(column, line_out[i]);
}
goto rescan;
}
} else {
if (offset_out == 0) {
line_out[offset_out++] = c;
continue;
}
}
line_out[offset_out++] = '\n';
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
column = offset_out = 0;
goto rescan;
}
line_out[offset_out++] = c;
}
if (offset_out) {
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
}
if (ferror(istream) || bb_fclose_nonstdin(istream)) {
bb_perror_msg("%s", *argv); /* Avoid multibyte problems. */
errs |= EXIT_FAILURE;
}
} else {
errs |= EXIT_FAILURE;
}
} while (*++argv);
bb_fflush_stdout_and_exit(errs);
}
int head_main(int argc, char **argv)
{
unsigned long count = 10;
unsigned long i;
#ifdef CONFIG_FEATURE_FANCY_HEAD
int count_bytes = 0;
int header_threshhold = 1;
#endif
FILE *fp;
const char *fmt;
char *p;
int opt;
int c;
int retval = EXIT_SUCCESS;
/* Allow legacy syntax of an initial numeric option without -n. */
if ((argc > 1) && (argv[1][0] == '-')
/* && (isdigit)(argv[1][1]) */
&& (((unsigned int)(argv[1][1] - '0')) <= 9)
) {
--argc;
++argv;
p = (*argv) + 1;
goto GET_COUNT;
}
while ((opt = getopt(argc, argv, head_opts)) > 0) {
switch(opt) {
#ifdef CONFIG_FEATURE_FANCY_HEAD
case 'q':
header_threshhold = INT_MAX;
break;
case 'v':
header_threshhold = -1;
break;
case 'c':
count_bytes = 1;
/* fall through */
#endif
case 'n':
p = optarg;
GET_COUNT:
count = bb_xgetularg10(p);
break;
default:
bb_show_usage();
}
}
argv += optind;
if (!*argv) {
*--argv = "-";
}
fmt = header_fmt_str + 1;
#ifdef CONFIG_FEATURE_FANCY_HEAD
if (argc - optind <= header_threshhold) {
header_threshhold = 0;
}
#else
if (argc <= optind + 1) {
fmt += 11;
}
/* Now define some things here to avoid #ifdefs in the code below.
* These should optimize out of the if conditions below. */
#define header_threshhold 1
#define count_bytes 0
#endif
do {
if ((fp = bb_wfopen_input(*argv)) != NULL) {
if (fp == stdin) {
*argv = (char *) bb_msg_standard_input;
}
if (header_threshhold) {
bb_printf(fmt, *argv);
}
i = count;
while (i && ((c = getc(fp)) != EOF)) {
if (count_bytes || (c == '\n')) {
--i;
}
putchar(c);
}
if (bb_fclose_nonstdin(fp)) {
bb_perror_msg("%s", *argv); /* Avoid multibyte problems. */
retval = EXIT_FAILURE;
}
bb_xferror_stdout();
}
fmt = header_fmt_str;
} while (*++argv);
bb_fflush_stdout_and_exit(retval);
}
extern int fold_main(int argc, char **argv)
{
char *w_opt;
int width = 80;
int i;
int errs = 0;
#ifdef CONFIG_FEATURE_SUSv2_OBSOLETE
/* Turn any numeric options into -w options. */
for (i = 1; i < argc; i++) {
char const *a = argv[i];
if (a[0] == '-') {
if (a[1] == '-' && !a[2])
break;
if (isdigit(a[1])) {
char *s = xmalloc(strlen(a) + 2);
s[0] = '-';
s[1] = 'w';
strcpy(s + 2, a + 1);
argv[i] = s;
}
}
}
#endif
flags = bb_getopt_ulflags(argc, argv, "bsw:", &w_opt);
if (flags & FLAG_WIDTH)
width = bb_xgetlarg(w_opt, 10, 1, 10000);
argv += optind;
if (!*argv) {
*--argv = "-";
}
do {
FILE *istream = bb_wfopen_input(*argv);
if (istream != NULL) {
int c;
int column = 0; /* Screen column where next char will go. */
int offset_out = 0; /* Index in `line_out' for next char. */
static char *line_out = NULL;
static int allocated_out = 0;
while ((c = getc(istream)) != EOF) {
if (offset_out + 1 >= allocated_out) {
allocated_out += 1024;
line_out = xrealloc(line_out, allocated_out);
}
if (c == '\n') {
line_out[offset_out++] = c;
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
column = offset_out = 0;
continue;
}
rescan:
column = adjust_column(column, c);
if (column > width) {
/* This character would make the line too long.
Print the line plus a newline, and make this character
start the next line. */
if (flags & FLAG_BREAK_SPACES) {
/* Look for the last blank. */
int logical_end;
for (logical_end = offset_out - 1; logical_end >= 0; logical_end--) {
if (isblank(line_out[logical_end])) {
break;
}
}
if (logical_end >= 0) {
/* Found a blank. Don't output the part after it. */
logical_end++;
fwrite(line_out, sizeof(char), (size_t) logical_end, stdout);
putchar('\n');
/* Move the remainder to the beginning of the next line.
The areas being copied here might overlap. */
memmove(line_out, line_out + logical_end, offset_out - logical_end);
offset_out -= logical_end;
for (column = i = 0; i < offset_out; i++) {
column = adjust_column(column, line_out[i]);
}
goto rescan;
}
} else {
if (offset_out == 0) {
line_out[offset_out++] = c;
continue;
}
}
line_out[offset_out++] = '\n';
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
column = offset_out = 0;
goto rescan;
}
line_out[offset_out++] = c;
}
if (offset_out) {
fwrite(line_out, sizeof(char), (size_t) offset_out, stdout);
}
if (ferror(istream) || bb_fclose_nonstdin(istream)) {
bb_perror_msg("%s", *argv); /* Avoid multibyte problems. */
errs |= EXIT_FAILURE;
}
} else {
errs |= EXIT_FAILURE;
}
} while (*++argv);
bb_fflush_stdout_and_exit(errs);
}
/* This could become a common function for md5 as well, by using md5_stream */
static int hash_files(int argc, char **argv, const uint8_t hash_algo)
{
int return_value = EXIT_SUCCESS;
uint8_t *hash_value;
#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
unsigned int flags;
flags = bb_getopt_ulflags(argc, argv, "scw");
#endif
#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
if (!(flags & FLAG_CHECK)) {
if (flags & FLAG_SILENT) {
bb_error_msg_and_die
("the -s option is meaningful only when verifying checksums");
} else if (flags & FLAG_WARN) {
bb_error_msg_and_die
("the -w option is meaningful only when verifying checksums");
}
}
#endif
if (argc == optind) {
argv[argc++] = "-";
}
#ifdef CONFIG_FEATURE_MD5_SHA1_SUM_CHECK
if (flags & FLAG_CHECK) {
FILE *pre_computed_stream;
int count_total = 0;
int count_failed = 0;
char *file_ptr = argv[optind];
char *line;
if (optind + 1 != argc) {
bb_error_msg_and_die
("only one argument may be specified when using -c");
}
if (strcmp(file_ptr, "-") == 0) {
pre_computed_stream = stdin;
} else {
pre_computed_stream = bb_xfopen(file_ptr, "r");
}
while ((line = bb_get_chomped_line_from_file(pre_computed_stream)) != NULL) {
char *filename_ptr;
count_total++;
filename_ptr = strstr(line, " ");
if (filename_ptr == NULL) {
if (flags & FLAG_WARN) {
bb_error_msg("Invalid format");
}
count_failed++;
return_value = EXIT_FAILURE;
free(line);
continue;
}
*filename_ptr = '\0';
filename_ptr += 2;
hash_value = hash_file(filename_ptr, hash_algo);
if (hash_value && (strcmp((char*)hash_value, line) == 0)) {
if (!(flags & FLAG_SILENT))
printf("%s: OK\n", filename_ptr);
} else {
if (!(flags & FLAG_SILENT))
printf("%s: FAILED\n", filename_ptr);
count_failed++;
return_value = EXIT_FAILURE;
}
/* possible free(NULL) */
free(hash_value);
free(line);
}
if (count_failed && !(flags & FLAG_SILENT)) {
bb_error_msg("WARNING: %d of %d computed checksums did NOT match",
count_failed, count_total);
}
if (bb_fclose_nonstdin(pre_computed_stream) == EOF) {
bb_perror_msg_and_die("Couldnt close file %s", file_ptr);
}
} else
#endif
{
while (optind < argc) {
char *file_ptr = argv[optind++];
hash_value = hash_file(file_ptr, hash_algo);
if (hash_value == NULL) {
return_value = EXIT_FAILURE;
} else {
printf("%s %s\n", hash_value, file_ptr);
free(hash_value);
}
}
}
return (return_value);
}