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od: fix -S NUM to not print chars >0x80

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function                                             old     new   delta
write_block                                          433     431      -2
print_ascii                                          217     215      -2
check_and_close                                      104      96      -8
od_main                                             2164    2139     -25

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-05-21 18:38:59 +02:00
parent 3ef344be91
commit 9d96e274ce
1 changed files with 19 additions and 38 deletions
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57
coreutils/od_bloaty.c
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@ -70,7 +70,7 @@ enum {
/* Check for 0x7f is a coreutils 6.3 addition */
#define ISPRINT(c) (((c)>=' ') && (c) != 0x7f)
#define ISPRINT(c) (((c) >= ' ') && (c) < 0x7f)
typedef long double longdouble_t;
typedef unsigned long long ulonglong_t;
@ -176,7 +176,7 @@ struct ERR_width_bytes_has_bad_size {
static smallint exit_code;
static size_t string_min;
static unsigned string_min;
/* An array of specs describing how to format each input block. */
static size_t n_specs;
@ -514,8 +514,7 @@ check_and_close(void)
}
if (ferror(stdout)) {
bb_error_msg(bb_msg_write_error);
exit_code = 1;
bb_error_msg_and_die(bb_msg_write_error);
}
}
@ -1043,29 +1042,6 @@ dump(off_t current_offset, off_t end_offset)
free(block[0]);
}
/* Read a single byte into *C from the concatenation of the input files
named in the global array FILE_LIST. On the first call to this
function, the global variable IN_STREAM is expected to be an open
stream associated with the input file INPUT_FILENAME. If IN_STREAM
is at end-of-file, close it and update the global variables IN_STREAM
and INPUT_FILENAME so they correspond to the next file in the list.
Then try to read a byte from the newly opened file. Repeat if
necessary until EOF is reached for the last file in FILE_LIST, then
set *C to EOF and return. Subsequent calls do likewise. */
static void
read_char(int *c)
{
while (in_stream) { /* !EOF */
*c = fgetc(in_stream);
if (*c != EOF)
return;
check_and_close();
open_next_file();
}
*c = EOF;
}
/* Read N bytes into BLOCK from the concatenation of the input files
named in the global array FILE_LIST. On the first call to this
function, the global variable IN_STREAM is expected to be an open
@ -1089,8 +1065,8 @@ read_char(int *c)
static void
dump_strings(off_t address, off_t end_offset)
{
size_t bufsize = MAX(100, string_min);
char *buf = xmalloc(bufsize);
unsigned bufsize = MAX(100, string_min);
unsigned char *buf = xmalloc(bufsize);
while (1) {
size_t i;
@ -1106,11 +1082,17 @@ dump_strings(off_t address, off_t end_offset)
bufsize += bufsize/8;
buf = xrealloc(buf, bufsize);
}
read_char(&c);
if (c < 0) { /* EOF */
free(buf);
return;
while (in_stream) { /* !EOF */
c = fgetc(in_stream);
if (c != EOF)
goto got_char;
check_and_close();
open_next_file();
}
/* EOF */
goto ret;
got_char:
address++;
if (!c)
break;
@ -1122,8 +1104,7 @@ dump_strings(off_t address, off_t end_offset)
if (i < string_min) /* Too short! */
goto tryline;
/* If we get here, the string is all printable and NUL-terminated,
* so print it. It is all in 'buf' and 'i' is its length. */
/* If we get here, the string is all printable and NUL-terminated */
buf[i] = 0;
format_address(address - i - 1, ' ');
@ -1144,9 +1125,9 @@ dump_strings(off_t address, off_t end_offset)
/* We reach this point only if we search through
(max_bytes_to_format - string_min) bytes before reaching EOF. */
free(buf);
check_and_close();
ret:
free(buf);
}
#if ENABLE_LONG_OPTS
@ -1397,7 +1378,7 @@ int od_main(int argc UNUSED_PARAM, char **argv)
else
dump(n_bytes_to_skip, end_offset);
if (fclose(stdin) == EOF)
if (fclose(stdin))
bb_perror_msg_and_die(bb_msg_standard_input);
return exit_code;