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use skip_whitespace where appropriate

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This commit is contained in:
Denis Vlasenko 2006-10-25 12:46:03 +00:00
parent c8400a2162
commit d18a3a20db
8 changed files with 98 additions and 105 deletions
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2
editors/awk.c
View File

@ -1470,7 +1470,7 @@ static int awk_split(char *s, node *spl, char **slist)
}
} else { /* space split */
while (*s) {
while (isspace(*s)) s++;
s = skip_whitespace(s);
if (! *s) break;
n++;
while (*s && !isspace(*s))

167
editors/sed.c
View File

@ -63,29 +63,29 @@
/* Each sed command turns into one of these structures. */
typedef struct sed_cmd_s {
/* Ordered by alignment requirements: currently 36 bytes on x86 */
/* Ordered by alignment requirements: currently 36 bytes on x86 */
/* address storage */
regex_t *beg_match; /* sed -e '/match/cmd' */
regex_t *end_match; /* sed -e '/match/,/end_match/cmd' */
regex_t *sub_match; /* For 's/sub_match/string/' */
int beg_line; /* 'sed 1p' 0 == apply commands to all lines */
int end_line; /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
/* address storage */
regex_t *beg_match; /* sed -e '/match/cmd' */
regex_t *end_match; /* sed -e '/match/,/end_match/cmd' */
regex_t *sub_match; /* For 's/sub_match/string/' */
int beg_line; /* 'sed 1p' 0 == apply commands to all lines */
int end_line; /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
FILE *file; /* File (sw) command writes to, -1 for none. */
char *string; /* Data string for (saicytb) commands. */
FILE *file; /* File (sw) command writes to, -1 for none. */
char *string; /* Data string for (saicytb) commands. */
unsigned short which_match; /* (s) Which match to replace (0 for all) */
unsigned short which_match; /* (s) Which match to replace (0 for all) */
/* Bitfields (gcc won't group them if we don't) */
unsigned int invert:1; /* the '!' after the address */
unsigned int in_match:1; /* Next line also included in match? */
unsigned int no_newline:1; /* Last line written by (sw) had no '\n' */
unsigned int sub_p:1; /* (s) print option */
/* Bitfields (gcc won't group them if we don't) */
unsigned int invert:1; /* the '!' after the address */
unsigned int in_match:1; /* Next line also included in match? */
unsigned int no_newline:1; /* Last line written by (sw) had no '\n' */
unsigned int sub_p:1; /* (s) print option */
/* GENERAL FIELDS */
char cmd; /* The command char: abcdDgGhHilnNpPqrstwxy:={} */
struct sed_cmd_s *next; /* Next command (linked list, NULL terminated) */
/* GENERAL FIELDS */
char cmd; /* The command char: abcdDgGhHilnNpPqrstwxy:={} */
struct sed_cmd_s *next; /* Next command (linked list, NULL terminated) */
} sed_cmd_t;
static const char *const semicolon_whitespace = "; \n\r\t\v";
@ -162,7 +162,7 @@ void sed_free_and_close_stuff(void)
static void cleanup_outname(void)
{
if(bbg.outname) unlink(bbg.outname);
if(bbg.outname) unlink(bbg.outname);
}
/* strdup, replacing "\n" with '\n', and "\delimiter" with 'delimiter' */
@ -343,36 +343,36 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, char *substr)
if(isspace(substr[idx])) continue;
switch (substr[idx]) {
/* Replace all occurrences */
case 'g':
if (match[0] != '^') sed_cmd->which_match = 0;
break;
/* Print pattern space */
case 'p':
sed_cmd->sub_p = 1;
break;
/* Write to file */
case 'w':
{
char *temp;
idx+=parse_file_cmd(sed_cmd,substr+idx,&temp);
/* Replace all occurrences */
case 'g':
if (match[0] != '^') sed_cmd->which_match = 0;
break;
/* Print pattern space */
case 'p':
sed_cmd->sub_p = 1;
break;
/* Write to file */
case 'w':
{
char *temp;
idx+=parse_file_cmd(sed_cmd,substr+idx,&temp);
break;
}
/* Ignore case (gnu exension) */
case 'I':
cflags |= REG_ICASE;
break;
/* Comment */
case '#':
while(substr[++idx]);
/* Fall through */
/* End of command */
case ';':
case '}':
goto out;
default:
bb_error_msg_and_die("bad option in substitution expression");
break;
}
/* Ignore case (gnu exension) */
case 'I':
cflags |= REG_ICASE;
break;
/* Comment */
case '#':
while(substr[++idx]);
/* Fall through */
/* End of command */
case ';':
case '}':
goto out;
default:
bb_error_msg_and_die("bad option in substitution expression");
}
}
out:
@ -420,7 +420,7 @@ static char *parse_cmd_args(sed_cmd_t *sed_cmd, char *cmdstr)
} else if (strchr(":btT", sed_cmd->cmd)) {
int length;
while(isspace(*cmdstr)) cmdstr++;
cmdstr = skip_whitespace(cmdstr);
length = strcspn(cmdstr, semicolon_whitespace);
if (length) {
sed_cmd->string = xstrndup(cmdstr, length);
@ -517,7 +517,7 @@ static void add_cmd(char *cmdstr)
}
/* skip whitespace before the command */
while (isspace(*cmdstr)) cmdstr++;
cmdstr = skip_whitespace(cmdstr);
/* Check for inversion flag */
if (*cmdstr == '!') {
@ -525,7 +525,7 @@ static void add_cmd(char *cmdstr)
cmdstr++;
/* skip whitespace before the command */
while (isspace(*cmdstr)) cmdstr++;
cmdstr = skip_whitespace(cmdstr);
}
/* last part (mandatory) will be a command */
@ -724,7 +724,7 @@ static int puts_maybe_newline(char *s, FILE *file, int missing_newline, int no_n
fputs(s,file);
if(!no_newline) fputc('\n',file);
if(ferror(file)) {
if(ferror(file)) {
xfunc_error_retval = 4; /* It's what gnu sed exits with... */
bb_error_msg_and_die(bb_msg_write_error);
}
@ -1167,40 +1167,43 @@ int sed_main(int argc, char **argv)
FILE *file;
for (i = optind; i < argc; i++) {
struct stat statbuf;
int nonstdoutfd;
if(!strcmp(argv[i], "-") && !bbg.in_place) {
add_input_file(stdin);
process_files();
} else {
file = bb_wfopen(argv[i], "r");
if (file) {
if(bbg.in_place) {
struct stat statbuf;
int nonstdoutfd;
bbg.outname=xstrndup(argv[i],strlen(argv[i])+6);
strcat(bbg.outname,"XXXXXX");
if(-1==(nonstdoutfd=mkstemp(bbg.outname)))
bb_error_msg_and_die("no temp file");
bbg.nonstdout=fdopen(nonstdoutfd,"w");
/* Set permissions of output file */
fstat(fileno(file),&statbuf);
fchmod(nonstdoutfd,statbuf.st_mode);
add_input_file(file);
process_files();
fclose(bbg.nonstdout);
bbg.nonstdout=stdout;
unlink(argv[i]);
rename(bbg.outname,argv[i]);
free(bbg.outname);
bbg.outname=0;
} else add_input_file(file);
} else {
status = EXIT_FAILURE;
}
continue;
}
file = bb_wfopen(argv[i], "r");
if (!file) {
status = EXIT_FAILURE;
continue;
}
if(!bbg.in_place) {
add_input_file(file);
continue;
}
bbg.outname=xstrndup(argv[i],strlen(argv[i])+6);
strcat(bbg.outname,"XXXXXX");
if(-1==(nonstdoutfd=mkstemp(bbg.outname)))
bb_error_msg_and_die("no temp file");
bbg.nonstdout=fdopen(nonstdoutfd,"w");
/* Set permissions of output file */
fstat(fileno(file),&statbuf);
fchmod(nonstdoutfd,statbuf.st_mode);
add_input_file(file);
process_files();
fclose(bbg.nonstdout);
bbg.nonstdout=stdout;
unlink(argv[i]);
rename(bbg.outname,argv[i]);
free(bbg.outname);
bbg.outname=0;
}
if(bbg.input_file_count>bbg.current_input_file) process_files();
}

6
miscutils/dc.c
View File

@ -179,10 +179,10 @@ static void stack_machine(const char *argument)
*/
static char *get_token(char **buffer)
{
char *start = NULL;
char *current = *buffer;
char *start = NULL;
char *current;
while (isspace(*current)) { current++; }
current = skip_whitespace(*buffer);
if (*current != 0) {
start = current;
while (!isspace(*current) && *current != 0) { current++; }

12
modutils/modprobe.c
View File

@ -76,15 +76,13 @@ static int parse_tag_value ( char *buffer, char **ptag, char **pvalue )
{
char *tag, *value;
while ( isspace ( *buffer ))
buffer++;
buffer = skip_whitespace ( buffer );
tag = value = buffer;
while ( !isspace ( *value ))
if (!*value) return 0;
else value++;
*value++ = 0;
while ( isspace ( *value ))
value++;
value = skip_whitespace ( value );
if (!*value) return 0;
*ptag = tag;
@ -311,11 +309,9 @@ static void include_conf ( struct dep_t **first, struct dep_t **current, char *b
}
}
else if (( strncmp ( buffer, "include", 7 ) == 0 ) && isspace ( buffer [7] )) {
int fdi; char *filename;
int fdi; char *filename = buffer + 8;
while ( isspace ( *filename ))
filename++;
filename = skip_whitespace ( buffer + 8 );
if (( fdi = open ( filename, O_RDONLY )) >= 0 ) {
include_conf(first, current, buffer, buflen, fdi);

9
networking/ifupdown.c
View File

@ -572,10 +572,7 @@ static char *next_word(char **buf)
}
/* Skip over leading whitespace */
word = *buf;
while (isspace(*word)) {
++word;
}
word = skip_whitespace(*buf);
/* Skip over comments */
if (*word == '#') {
@ -712,9 +709,7 @@ static struct interfaces_file_t *read_interfaces(const char *filename)
}
/* ship any trailing whitespace */
while (isspace(*buf_ptr)) {
++buf_ptr;
}
buf_ptr = skip_whitespace(buf_ptr);
if (buf_ptr[0] != '\0') {
bb_error_msg("too many parameters \"%s\"", buf);

2
networking/wget.c
View File

@ -302,7 +302,7 @@ int wget_main(int argc, char **argv)
s = buf;
while (*s != '\0' && !isspace(*s)) ++s;
while (isspace(*s)) ++s;
s = skip_whitespace(s);
// FIXME: no error check
// xatou wouldn't work: "200 OK"
status = atoi(s);

2
shell/bbsh.c
View File

@ -119,7 +119,7 @@ static char *parse_pipeline(char *cmdline, struct pipeline *line)
char *end;
// Skip leading whitespace and detect end of line.
while (isspace(*start)) start++;
start = skip_whitespace(start);
if (!*start || *start=='#') {
if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
return 0;

3
util-linux/mount.c
View File

@ -203,8 +203,7 @@ static llist_t *get_block_backed_filesystems(void)
while ((buf = xmalloc_getline(f)) != 0) {
if (!strncmp(buf, "nodev", 5) && isspace(buf[5]))
continue;
fs = buf;
while (isspace(*fs)) fs++;
fs = skip_whitespace(buf);
if (*fs=='#' || *fs=='*' || !*fs) continue;
llist_add_to_end(&list, xstrdup(fs));