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grep: add help text; fix style

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This commit is contained in:
Denis Vlasenko 2006-09-29 21:04:12 +00:00
parent 51937534fb
commit 6c30db8bd3
2 changed files with 27 additions and 26 deletions
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50
findutils/grep.c
View File

@ -140,7 +140,7 @@ static int grep_file(FILE *file)
* match (regexec returns failure (REG_NOMATCH) and the user specified
* invert search)
*/
if(!(gl->flg_mem_alocated_compiled & COMPILED)) {
if (!(gl->flg_mem_alocated_compiled & COMPILED)) {
gl->flg_mem_alocated_compiled |= COMPILED;
xregcomp(&(gl->preg), gl->pattern, reflags);
}
@ -210,7 +210,7 @@ static int grep_file(FILE *file)
#if ENABLE_FEATURE_GREP_CONTEXT
else { /* no match */
/* Add the line to the circular 'before' buffer */
if(lines_before) {
if (lines_before) {
free(before_buf[curpos]);
before_buf[curpos] = xstrdup(line);
curpos = (curpos + 1) % lines_before;
@ -273,7 +273,7 @@ static void load_regexes_from_file(llist_t *fopt)
char *line;
FILE *f;
while(fopt) {
while (fopt) {
llist_t *cur = fopt;
char *ffile = cur->data;
@ -308,23 +308,23 @@ int grep_main(int argc, char **argv)
&pattern_head, &fopt,
&slines_after, &slines_before, &Copt);
if(opt & GREP_OPT_C) {
if (opt & GREP_OPT_C) {
/* C option unseted A and B options, but next -A or -B
may be ovewrite own option */
if(!(opt & GREP_OPT_A)) /* not overwtited */
if (!(opt & GREP_OPT_A)) /* not overwtited */
slines_after = Copt;
if(!(opt & GREP_OPT_B)) /* not overwtited */
if (!(opt & GREP_OPT_B)) /* not overwtited */
slines_before = Copt;
opt |= GREP_OPT_A|GREP_OPT_B; /* set for parse now */
}
if(opt & GREP_OPT_A) {
if (opt & GREP_OPT_A) {
lines_after = strtoul(slines_after, &junk, 10);
if(*junk != '\0')
if (*junk != '\0')
bb_error_msg_and_die(bb_msg_invalid_arg, slines_after, "-A");
}
if(opt & GREP_OPT_B) {
if (opt & GREP_OPT_B) {
lines_before = strtoul(slines_before, &junk, 10);
if(*junk != '\0')
if (*junk != '\0')
bb_error_msg_and_die(bb_msg_invalid_arg, slines_before, "-B");
}
/* sanity checks after parse may be invalid numbers ;-) */
@ -332,7 +332,7 @@ int grep_main(int argc, char **argv)
opt &= ~GREP_OPT_n;
lines_before = 0;
lines_after = 0;
} else if(lines_before > 0)
} else if (lines_before > 0)
before_buf = (char **)xzalloc(lines_before * sizeof(char *));
#else
/* with auto sanity checks */
@ -342,31 +342,31 @@ int grep_main(int argc, char **argv)
#endif
invert_search = (opt & GREP_OPT_v) != 0; /* 0 | 1 */
if(opt & GREP_OPT_H)
if (opt & GREP_OPT_H)
print_filename++;
if(opt & GREP_OPT_h)
if (opt & GREP_OPT_h)
print_filename--;
if (pattern_head != NULL) {
/* convert char *argv[] to grep_list_data_t */
llist_t *cur;
for(cur = pattern_head; cur; cur = cur->link)
for (cur = pattern_head; cur; cur = cur->link)
cur->data = new_grep_list_data(cur->data, 0);
}
if(opt & GREP_OPT_f)
if (opt & GREP_OPT_f)
load_regexes_from_file(fopt);
if(ENABLE_FEATURE_GREP_FGREP_ALIAS && bb_applet_name[0] == 'f')
if (ENABLE_FEATURE_GREP_FGREP_ALIAS && bb_applet_name[0] == 'f')
opt |= GREP_OPT_F;
if(!(opt & GREP_OPT_o))
if (!(opt & GREP_OPT_o))
reflags = REG_NOSUB;
if(ENABLE_FEATURE_GREP_EGREP_ALIAS &&
if (ENABLE_FEATURE_GREP_EGREP_ALIAS &&
(bb_applet_name[0] == 'e' || (opt & GREP_OPT_E)))
reflags |= REG_EXTENDED;
if(opt & GREP_OPT_i)
if (opt & GREP_OPT_i)
reflags |= REG_ICASE;
argv += optind;
@ -398,7 +398,7 @@ int grep_main(int argc, char **argv)
matched = 0;
while (argc--) {
cur_file = *argv++;
if(!cur_file || (*cur_file == '-' && !cur_file[1])) {
if (!cur_file || (*cur_file == '-' && !cur_file[1])) {
cur_file = "(standard input)";
file = stdin;
} else {
@ -410,7 +410,7 @@ int grep_main(int argc, char **argv)
error_open_count++;
} else {
matched += grep_file(file);
if(matched < 0) {
if (matched < 0) {
/* we found a match but were told to be quiet, stop here and
* return success */
break;
@ -427,9 +427,9 @@ int grep_main(int argc, char **argv)
(grep_list_data_t *)pattern_head_ptr->data;
pattern_head = pattern_head->link;
if((gl->flg_mem_alocated_compiled & PATTERN_MEM_A))
if ((gl->flg_mem_alocated_compiled & PATTERN_MEM_A))
free(gl->pattern);
if((gl->flg_mem_alocated_compiled & COMPILED))
if ((gl->flg_mem_alocated_compiled & COMPILED))
regfree(&(gl->preg));
free(pattern_head_ptr);
}
@ -437,9 +437,9 @@ int grep_main(int argc, char **argv)
/* 0 = success, 1 = failed, 2 = error */
/* If the -q option is specified, the exit status shall be zero
* if an input line is selected, even if an error was detected. */
if(BE_QUIET && matched)
if (BE_QUIET && matched)
return 0;
if(error_open_count)
if (error_open_count)
return 2;
return !matched; /* invert return value 0 = success, 1 = failed */
}

3
include/usage.h
View File

@ -927,7 +927,7 @@ USE_FEATURE_DATE_ISOFMT( \
"\t-H login_host\tLog login_host into the utmp file as the hostname"
#define grep_trivial_usage \
"[-ihHnqvs" \
"[-ihHnqvso" \
USE_FEATURE_GREP_EGREP_ALIAS("E") \
USE_FEATURE_GREP_CONTEXT("ABC") \
"] PATTERN [FILEs...]"
@ -945,6 +945,7 @@ USE_FEATURE_DATE_ISOFMT( \
"\t-s\tsuppress file open/read error messages\n" \
"\t-c\tonly print count of matching lines\n" \
"\t-f\tread PATTERN from file\n" \
"\t-o\tshow only the part of a line that matches PATTERN\n" \
"\t-e\tPATTERN is a regular expression\n" \
"\t-F\tPATTERN is a set of newline-separated strings" \
USE_FEATURE_GREP_EGREP_ALIAS("\n\t-E\tPATTERN is an extended regular expression") \