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cut, mount: small improvements

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This commit is contained in:
Denis Vlasenko 2006-10-12 22:42:33 +00:00
parent 9c267b851e
commit 372686bde7
4 changed files with 29 additions and 30 deletions
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31
coreutils/cut.c
View File

@ -13,13 +13,11 @@
/* option vars */
static const char optstring[] = "b:c:f:d:sn";
#define CUT_OPT_BYTE_FLGS (1<<0)
#define CUT_OPT_CHAR_FLGS (1<<1)
#define CUT_OPT_FIELDS_FLGS (1<<2)
#define CUT_OPT_DELIM_FLGS (1<<3)
#define CUT_OPT_SUPPRESS_FLGS (1<<4)
static unsigned opt;
static char delim = '\t'; /* delimiter, default is tab */
@ -61,7 +59,7 @@ static void cut_file(FILE * file)
int spos;
/* cut based on chars/bytes XXX: only works when sizeof(char) == byte */
if ((opt & (CUT_OPT_CHAR_FLGS | CUT_OPT_BYTE_FLGS))) {
if (option_mask32 & (CUT_OPT_CHAR_FLGS | CUT_OPT_BYTE_FLGS)) {
/* print the chars specified in each cut list */
for (; cl_pos < nlists; cl_pos++) {
spos = cut_lists[cl_pos].startpos;
@ -115,7 +113,7 @@ static void cut_file(FILE * file)
/* does this line contain any delimiters? */
if (strchr(line, delim) == NULL) {
if (!(opt & CUT_OPT_SUPPRESS_FLGS))
if (!(option_mask32 & CUT_OPT_SUPPRESS_FLGS))
puts(line);
goto next_line;
}
@ -125,7 +123,6 @@ static void cut_file(FILE * file)
for (; cl_pos < nlists && line; cl_pos++) {
spos = cut_lists[cl_pos].startpos;
do {
/* find the field we're looking for */
while (line && ndelim < spos) {
field = strsep(&line, delimiter);
@ -156,7 +153,7 @@ static void cut_file(FILE * file)
/* if we printed anything at all, we need to finish it with a
* newline cuz we were handed a chomped line */
putchar('\n');
next_line:
next_line:
linenum++;
free(printed);
free(orig_line);
@ -170,14 +167,13 @@ int cut_main(int argc, char **argv)
char *sopt, *ltok;
opt_complementary = "b--bcf:c--bcf:f--bcf";
opt = getopt32(argc, argv, optstring, &sopt, &sopt, &sopt, &ltok);
if (!(opt & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS)))
bb_error_msg_and_die
("expected a list of bytes, characters, or fields");
if (opt & BB_GETOPT_ERROR)
getopt32(argc, argv, optstring, &sopt, &sopt, &sopt, &ltok);
if (!(option_mask32 & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS)))
bb_error_msg_and_die("expected a list of bytes, characters, or fields");
if (option_mask32 & BB_GETOPT_ERROR)
bb_error_msg_and_die("only one type of list may be specified");
if ((opt & (CUT_OPT_DELIM_FLGS))) {
if (option_mask32 & CUT_OPT_DELIM_FLGS) {
if (strlen(ltok) > 1) {
bb_error_msg_and_die("the delimiter must be a single character");
}
@ -185,8 +181,8 @@ int cut_main(int argc, char **argv)
}
/* non-field (char or byte) cutting has some special handling */
if (!(opt & CUT_OPT_FIELDS_FLGS)) {
if (opt & CUT_OPT_SUPPRESS_FLGS) {
if (!(option_mask32 & CUT_OPT_FIELDS_FLGS)) {
if (option_mask32 & CUT_OPT_SUPPRESS_FLGS) {
bb_error_msg_and_die
("suppressing non-delimited lines makes sense%s",
_op_on_field);
@ -251,10 +247,9 @@ int cut_main(int argc, char **argv)
bb_error_msg_and_die("invalid byte or field list");
/* add the new list */
cut_lists =
xrealloc(cut_lists, sizeof(struct cut_list) * (++nlists));
cut_lists[nlists - 1].startpos = s;
cut_lists[nlists - 1].endpos = e;
cut_lists = xrealloc(cut_lists, sizeof(struct cut_list) * (++nlists));
cut_lists[nlists-1].startpos = s;
cut_lists[nlists-1].endpos = e;
}
/* make sure we got some cut positions out of all that */

4
coreutils/sort.c
View File

@ -124,9 +124,9 @@ static struct sort_key *add_key(void)
}
#define GET_LINE(fp) (global_flags&FLAG_z) ? bb_get_chunk_from_file(fp,NULL) \
: bb_get_chomped_line_from_file(fp)
: bb_get_chomped_line_from_file(fp)
#else
#define GET_LINE(fp) bb_get_chomped_line_from_file(fp)
#define GET_LINE(fp) bb_get_chomped_line_from_file(fp)
#endif
/* Iterate through keys list and perform comparisons */

1
libbb/get_line_from_file.c
View File

@ -41,6 +41,7 @@ char *bb_get_chunk_from_file(FILE * file, int *end)
free(linebuf);
return NULL;
}
linebuf = xrealloc(linebuf, idx+1);
linebuf[idx] = 0;
}
return linebuf;

23
util-linux/mount.c
View File

@ -172,8 +172,12 @@ static int parse_mount_options(char *options, char **unrecognized)
static llist_t *get_block_backed_filesystems(void)
{
char *fs, *buf,
*filesystems[] = {"/etc/filesystems", "/proc/filesystems", 0};
static const char *const filesystems[] = {
"/etc/filesystems",
"/proc/filesystems",
0
};
char *fs, *buf;
llist_t *list = 0;
int i;
FILE *f;
@ -182,16 +186,15 @@ static llist_t *get_block_backed_filesystems(void)
f = fopen(filesystems[i], "r");
if (!f) continue;
for (fs = buf = 0; (fs = buf = bb_get_chomped_line_from_file(f));
free(buf))
{
if (!strncmp(buf,"nodev",5) && isspace(buf[5])) continue;
while ((buf = bb_get_chomped_line_from_file(f)) != 0) {
if (!strncmp(buf, "nodev", 5) && isspace(buf[5]))
continue;
fs = buf;
while (isspace(*fs)) fs++;
if (*fs=='#' || *fs=='*') continue;
if (!*fs) continue;
if (*fs=='#' || *fs=='*' || !*fs) continue;
llist_add_to_end(&list,xstrdup(fs));
llist_add_to_end(&list, xstrdup(fs));
free(buf);
}
if (ENABLE_FEATURE_CLEAN_UP) fclose(f);
}