int
main(int argc, char *argv[])
{
wchar_t pattern[1024];
int i;
setlocale(LC_CTYPE, "");
if (argc < 2) {
fputs("no pattern\n", stderr);
exit(1);
}
if (mbstowcs(pattern, argv[1], 1024) == (size_t)(-1)) {
fprintf(stderr, "mbstowcs failed #1\n");
exit(1);
}
if (argc == 2) {
do_grep(pattern, stdin);
}
else {
for (i = 2; i < argc; i++) {
FILE *f;
f = fopen(argv[i], "r");
if (!f) {
perror(argv[i]);
exit(1);
}
do_grep(pattern, f);
fclose(f);
}
}
exit(0);
}
int
main(int argc, char *argv[])
{
regex_t pat;
int err;
int i;
if (argc < 2) {
fputs("no pattern\n", stderr);
exit(1);
}
err = regcomp(&pat, argv[1], REG_EXTENDED | REG_NOSUB | REG_NEWLINE);
if (err != 0) {
char buf[1024];
regerror(err, &pat, buf, sizeof buf);
puts(buf);
exit(1);
}
if (argc == 2) {
do_grep(&pat, stdin);
}
else {
for (i = 2; i < argc; i++) {
FILE *f = fopen(argv[i], "r");
if (!f) die(argv[i]);
do_grep(&pat, f);
fclose(f);
}
}
regfree(&pat);
exit(0);
}
int main(int argc, char *argv[]) {
int opt;
int ignore_case = 0;
int matched = 0;
while ((opt = getopt_long(argc, argv, "iv", longopts, NULL)) != -1) {
switch (opt) {
case 'i':
ignore_case = REG_ICASE;
break;
case 'v':
matched = REG_NOMATCH;
break;
}
}
regex_t pat;
int err;
int i;
if (argc < 2) {
fputs("no pattern\n", stderr);
exit(1);
}
int regex_flg = REG_EXTENDED | REG_NOSUB | REG_NEWLINE | ignore_case;
err = regcomp(&pat, argv[optind], regex_flg);
if (err != 0) {
char buf[1024];
regerror(err, &pat, buf, sizeof buf);
puts(buf);
exit(1);
}
if (optind == argc) {
do_grep(&pat, stdin, matched);
} else {
for (i = optind + 1; i < argc; i++) {
FILE *f;
f = fopen(argv[i], "r");
if (!f) {
perror(argv[i]);
exit(1);
}
do_grep(&pat, f, matched);
fclose(f);
}
}
regfree(&pat);
exit(0);
}
int main(int argc, char *argv[]) {
regex_t pat;
int err;
int opt;
int re_mode;
while ((opt = getopt(argc, argv, "iv")) != -1) {
switch (opt) {
case 'i':
opt_ignorecase = 1;
break;
case 'v':
opt_invert = 1;
break;
case '?':
fprintf(stderr, "Usage: %s [-iv] [PATTERN] \n", argv[0]);
exit(1);
}
}
/*
* 配列の添字 0 の位置(アドレス)を変更している。
* [a,b,c] += 1 => [b,c,null]
* これにより argc, argv の両変数からオプションの情報を
* 取り除ける。
*/
argv += optind;
argc -= optind;
if (argc < 1) {
fputs("no pattern\n", stderr);
exit(1);
}
re_mode = REG_EXTENDED | REG_NOSUB | REG_NEWLINE;
if (opt_ignorecase) {
re_mode |= REG_ICASE;
}
err = regcomp(&pat, argv[0], re_mode);
if (err != 0) {
char buf[1024];
regerror(err, &pat, buf, sizeof buf);
puts(buf);
exit(1);
}
if (argc == 1) {
do_grep(&pat, stdin);
}
else {
int i;
for (i = 1; i < argc; i++) {
FILE *f;
f = fopen(argv[i], "r");
if (!f) {
perror(argv[i]);
exit(1);
}
do_grep(&pat, f);
fclose(f);
}
}
regfree(&pat);
exit(0);
}
int main(int argc, char **argv) {
char *pattern = NULL;
int status = 0;
regex_t *preg = malloc(sizeof(regex_t));
int regcomp_flags = REG_BASIC;
int regex_errcode = 0;
gargs.is_invert = 0;
gargs.show_filename = 0;
gargs.show_line_number = 0;
static const char *optstr = "Ee:Hhinv";
int opt = 0;
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch(opt) {
case 'e':
pattern = read_pattern(optarg);
break;
case 'E':
regcomp_flags |= REG_EXTENDED;
break;
case 'H':
gargs.show_filename = 1;
break;
case 'h':
display_usage(EXIT_SUCCESS, NULL, EXIT_SUCCESS);
break;
case 'i':
regcomp_flags |= REG_ICASE;
break;
case 'n':
gargs.show_line_number = 1;
break;
case 'v':
gargs.is_invert = 1;
break;
default: // shouldn't reach here
break;
}
}
if ( !pattern ) { // no -e option
if (argc - optind < 1) {
display_usage(EXIT_TROUBLE, "Please provide pattern.", -1);
} else {
pattern = read_pattern(argv[optind++]);
}
}
if ( (regex_errcode = regcomp(preg, pattern, regcomp_flags)) != 0 ) {
regfree(preg);
display_usage(EXIT_TROUBLE, "Pattern invalid.", regex_errcode);
}
free(pattern);
#ifdef DEBUG
printf("optind:%d, argc:%d\n\n", optind, argc);
#endif
if (argc == optind) { // use stdin
status = do_grep(preg, "-");
regfree(preg);
exit(status);
}
if (argc - optind > 1)
gargs.show_filename = 1;
while (optind < argc) {
char *filename = argv[optind++];
if (isdir(filename))
fprintf(stderr, "[WARNING] %s is a directory.\n", filename);
//display_usage(EXIT_TROUBLE, "Please provide a file instead of directory", -1);
status = do_grep(preg, filename);
}
regfree(preg);
exit(status);
}
