static void load_regexes_from_file(const char *filename)
{
char *line;
FILE *f = xfopen(filename, "r");
while ((line = get_line_from_file(f)) != NULL) {
chomp(line);
add_regex(line);
free(line);
}
}
int MOD_CLS_NAME::preload() {
AmConfigReader cfg;
if(cfg.loadPluginConf(MOD_NAME)) {
INFO("no module configuration for '%s' found, not preloading regular expressions\n",
MOD_NAME);
return 0;
}
bool failed = false;
for (std::map<string,string>::const_iterator it =
cfg.begin(); it != cfg.end(); it++) {
if (add_regex(it->first, it->second)) {
ERROR("compiling regex '%s' for '%s'\n",
it->second.c_str(), it->first.c_str());
failed = true;
} else {
DBG("compiled regex '%s' as '%s'\n", it->second.c_str(), it->first.c_str());
}
}
return failed? -1 : 0;
}
extern int grep_main(int argc, char **argv)
{
int opt;
#if defined BB_FEATURE_GREP_CONTEXT || defined BB_FEATURE_GREP_EGREP_ALIAS
char *junk;
#endif
#ifdef BB_FEATURE_CLEAN_UP
/* destroy command strings on exit */
atexit(destroy_regexes);
#endif
#ifdef BB_FEATURE_GREP_EGREP_ALIAS
junk = get_last_path_component(argv[0]);
if (junk && strcmp(junk, "egrep") == 0)
reflags |= REG_EXTENDED;
#endif
/* do normal option parsing */
while ((opt = getopt(argc, argv, "iHhlnqvsce:f:"
#ifdef BB_FEATURE_GREP_CONTEXT
"A:B:C:"
#endif
#ifdef BB_FEATURE_GREP_EGREP_ALIAS
"E"
#endif
)) > 0) {
switch (opt) {
case 'i':
ignore_case++;
break;
case 'l':
print_files_with_matches++;
break;
case 'H':
print_filename++;
break;
case 'h':
print_filename--;
break;
case 'n':
print_line_num++;
break;
case 'q':
be_quiet++;
break;
case 'v':
invert_search++;
break;
case 's':
suppress_err_msgs++;
break;
case 'c':
print_match_counts++;
break;
case 'e':
add_regex(optarg);
break;
#ifdef BB_FEATURE_GREP_EGREP_ALIAS
case 'E':
reflags |= REG_EXTENDED;
break;
#endif
case 'f':
load_regexes_from_file(optarg);
break;
#ifdef BB_FEATURE_GREP_CONTEXT
case 'A':
lines_after = strtoul(optarg, &junk, 10);
if(*junk != '\0')
error_msg_and_die("invalid context length argument");
break;
case 'B':
lines_before = strtoul(optarg, &junk, 10);
if(*junk != '\0')
error_msg_and_die("invalid context length argument");
before_buf = (char **)xcalloc(lines_before, sizeof(char *));
break;
case 'C':
lines_after = lines_before = strtoul(optarg, &junk, 10);
if(*junk != '\0')
error_msg_and_die("invalid context length argument");
before_buf = (char **)xcalloc(lines_before, sizeof(char *));
break;
#endif /* BB_FEATURE_GREP_CONTEXT */
default:
show_usage();
}
}
/* if we didn't get a pattern from a -e and no command file was specified,
* argv[optind] should be the pattern. no pattern, no worky */
if (nregexes == 0) {
if (argv[optind] == NULL)
show_usage();
else {
add_regex(argv[optind]);
optind++;
}
}
/* sanity checks */
if (print_match_counts || be_quiet || print_files_with_matches) {
print_line_num = 0;
#ifdef BB_FEATURE_GREP_CONTEXT
lines_before = 0;
lines_after = 0;
#endif
}
/* argv[(optind)..(argc-1)] should be names of file to grep through. If
* there is more than one file to grep, we will print the filenames */
if ((argc-1) - (optind) > 0)
print_filename++;
/* If no files were specified, or '-' was specified, take input from
* stdin. Otherwise, we grep through all the files specified. */
if (argv[optind] == NULL || (strcmp(argv[optind], "-") == 0)) {
grep_file(stdin);
}
else {
int i;
FILE *file;
for (i = optind; i < argc; i++) {
cur_file = argv[i];
file = fopen(cur_file, "r");
if (file == NULL) {
if (!suppress_err_msgs)
perror_msg("%s", cur_file);
}
else {
grep_file(file);
fclose(file);
}
}
}
return !matched; /* invert return value 0 = success, 1 = failed */
}
