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-rwxr-xr-xscripts/test/grep.test17
-rw-r--r--toys/pending/grep.c65
2 files changed, 63 insertions, 19 deletions
diff --git a/scripts/test/grep.test b/scripts/test/grep.test
index bdd90b39..13b1af78 100755
--- a/scripts/test/grep.test
+++ b/scripts/test/grep.test
@@ -68,7 +68,7 @@ testing "grep -o overlap" "grep -bo aaa" "1:aaa\n" "" "baaaa\n"
testing "grep -co" "grep -co one input" "1\n" "one one one\n" ""
testing "grep -nom" "grep -nom 2 one" "1:one\n1:one\n1:one\n2:one\n2:one\n" \
"" "one one one\none one\none"
-testing "grep -vo" "grep -vo one input" "twothree\n" "onetwoonethreeone\n" ""
+testing "grep -vo" "grep -vo one input" "two\nthree\n" "onetwoonethreeone\n" ""
testing "grep no newline" "grep -h one input -" \
"hello one\nthere one\n" "hello one" "there one"
@@ -78,10 +78,21 @@ testing "grep -e multi" "grep -e one -ethree input" \
mkdir sub
echo -e "one\ntwo\nthree" > sub/one
echo -e "three\ntwo\none" > sub/two
-testing "grep -r" "grep -hr one sub" "one\none\n" "" ""
+testing "grep -hr" "grep -hr one sub" "one\none\n" "" ""
+testing "grep -r file" "grep -r three sub/two" "three\n" "" ""
+testing "grep -r dir" "grep -r one sub | sort" "sub/one:one\nsub/two:one\n" \
+ "" ""
rm -rf sub
-testing "grep -Fx ''" "grep -Fx '' input" "" "one one one\n" ""
+# Not sure if -Fx '' should do? Posix is unclear, '' match every line but does
+# it match every _byte_ in that line?
+testing "grep -Fx ''" "grep -Fx '' input" "one one one\n" "one one one\n" ""
testing "grep -F ''" "grep -F '' input" "one one one\n" "one one one\n" ""
+testing "grep -F -e blah -e ''" "grep -F -e blah -e '' input" "one one one\n" \
+ "one one one\n" ""
+testing "grep -e blah -e ''" "grep -e blah -e '' input" "one one one\n" \
+ "one one one\n" ""
testing "grep -w ''" "grep -w '' input" "" "one one one\n" ""
testing "grep -o ''" "grep -o '' input" "" "one one one\n" ""
+testing "grep backref" 'grep -e "a\(b\)" -e "b\(c\)\1"' "bcc\nab\n" \
+ "" "bcc\nbcb\nab\n"
diff --git a/toys/pending/grep.c b/toys/pending/grep.c
index 9c282ea7..bc884528 100644
--- a/toys/pending/grep.c
+++ b/toys/pending/grep.c
@@ -4,7 +4,7 @@
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html
-USE_GREP(NEWTOY(grep, "EFHabhinosvwclqe*f*m#x[!wx][!EFw]", TOYFLAG_BIN))
+USE_GREP(NEWTOY(grep, "EFHabhinorsvwclqe*f*m#x[!wx][!EFw]", TOYFLAG_BIN))
USE_GREP(OLDTOY(egrep, grep, OPTSTR_grep, TOYFLAG_BIN))
USE_GREP(OLDTOY(fgrep, grep, OPTSTR_grep, TOYFLAG_BIN))
@@ -23,9 +23,9 @@ config GREP
match type:
-E extended regex syntax -F fixed (match literal string)
- -i case insensitive -v invert match
- -w whole word (implies -E) -m stop after this many lines matched
- -x whole line
+ -i case insensitive -m stop after this many lines matched
+ -r recursive (on dir) -v invert match
+ -w whole word (implies -E) -x whole line
display modes: (default: matched line)
-c count of matching lines -l show matching filenames
@@ -46,7 +46,7 @@ GLOBALS(
struct arg_list *f;
struct arg_list *e;
- char *regstr;
+ struct arg_list *regex;
)
static void do_grep(int fd, char *name)
@@ -80,11 +80,15 @@ static void do_grep(int fd, char *name)
int rc = 0, skip = 0;
if (toys.optflags & FLAG_F) {
- struct arg_list *seek;
+ struct arg_list *seek, fseek;
char *s = 0;
for (seek = TT.e; seek; seek = seek->next) {
-
+ if (!*seek->arg) {
+ seek = &fseek;
+ fseek.arg = s = line;
+ break;
+ }
if (toys.optflags & FLAG_i) {
long ll = strlen(seek->arg);;
@@ -133,8 +137,12 @@ static void do_grep(int fd, char *name)
fclose(file);
return;
}
+ if (toys.optflags & FLAG_o)
+ if (matches[which].rm_eo == matches[which].rm_so)
+ break;
+
if (!(toys.optflags & FLAG_c)) {
- if (!(toys.optflags & FLAG_h)) printf("%s:", name);
+ if (toys.optflags & FLAG_H) printf("%s:", name);
if (toys.optflags & FLAG_n) printf("%d:", lcount);
if (toys.optflags & FLAG_b)
printf("%ld:", offset + (start-line) +
@@ -158,7 +166,7 @@ static void do_grep(int fd, char *name)
}
if (toys.optflags & FLAG_c) {
- if (!(toys.optflags & FLAG_h)) printf("%s:", name);
+ if (toys.optflags & FLAG_H) printf("%s:", name);
xprintf("%d\n", mcount);
}
@@ -179,7 +187,7 @@ static void parse_regex(void)
if (TT.f) s = ss = xreadfile(al->arg);
else s = ss = al->arg;
- while (ss && *s) {
+ do {
ss = strchr(s, '\n');
if (ss) *(ss++) = 0;
new = xmalloc(sizeof(struct arg_list));
@@ -187,7 +195,7 @@ static void parse_regex(void)
new->arg = s;
list = new;
s = ss;
- }
+ } while (ss && *s);
al = al->next;
if (!al && TT.f) {
TT.f = 0;
@@ -198,12 +206,13 @@ static void parse_regex(void)
if (!(toys.optflags & FLAG_F)) {
int w = toys.optflags & FLAG_w;
+ char *regstr;
// Convert strings to one big regex
if (w) len = 36;
for (al = TT.e; al; al = al->next) len += strlen(al->arg)+1;
- TT.regstr = s = xmalloc(len);
+ regstr = s = xmalloc(len);
if (w) s = stpcpy(s, "(^|[^_[:alnum:]])(");
for (al = TT.e; al; al = al->next) {
s = stpcpy(s, al->arg);
@@ -213,7 +222,7 @@ static void parse_regex(void)
*(s-=(1+!(toys.optflags & FLAG_E))) = 0;
if (w) strcpy(s, ")($|[^_[:alnum:]])");
- w = regcomp((regex_t *)toybuf, TT.regstr,
+ w = regcomp((regex_t *)toybuf, regstr,
((toys.optflags & FLAG_E) ? REG_EXTENDED : 0) |
((toys.optflags & FLAG_i) ? REG_ICASE : 0));
@@ -225,8 +234,27 @@ static void parse_regex(void)
}
}
+static int do_grep_r(struct dirtree *new)
+{
+ char *name;
+
+ if (new->parent && !dirtree_notdotdot(new)) return 0;
+ if (S_ISDIR(new->st.st_mode)) return DIRTREE_RECURSE;
+
+ // "grep -r onefile" doesn't show filenames, but "grep -r onedir" should.
+ if (new->parent && !(toys.optflags & FLAG_h)) toys.optflags |= FLAG_H;
+
+ name = dirtree_path(new, 0);
+ do_grep(openat(dirtree_parentfd(new), new->name, 0), name);
+ free(name);
+
+ return 0;
+}
+
void grep_main(void)
{
+ char **ss;
+
// Handle egrep and fgrep
if (*toys.which->name == 'e' || (toys.optflags & FLAG_w))
toys.optflags |= FLAG_E;
@@ -241,13 +269,18 @@ void grep_main(void)
parse_regex();
- if (!(toys.optflags & FLAG_H) && (toys.optc < 2)) toys.optflags |= FLAG_h;
+ if (!(toys.optflags & FLAG_h) && toys.optc>1) toys.optflags |= FLAG_H;
toys.exitval = 1;
if (toys.optflags & FLAG_s) {
close(2);
xopen("/dev/null", O_RDWR);
}
- loopfiles_rw(toys.optargs, O_RDONLY, 0, 1, do_grep);
- xexit();
+
+ if (toys.optflags & FLAG_r) {
+ for (ss=toys.optargs; *ss; ss++) {
+ if (!strcmp(*ss, "-")) do_grep(0, *ss);
+ else dirtree_read(*ss, do_grep_r);
+ }
+ } else loopfiles_rw(toys.optargs, O_RDONLY, 0, 1, do_grep);
}