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authorRob Landley <rob@landley.net>2013-12-29 11:07:23 -0600
committerRob Landley <rob@landley.net>2013-12-29 11:07:23 -0600
commitd3657e9e8846e11f376fcb6fae60b15dae853479 (patch)
tree61be244af070cbb8e944eb52eddc4f23e578d66c /toys/posix
parent46c8069947768f1deb3352ee354550f69ab9fbd3 (diff)
downloadtoybox-d3657e9e8846e11f376fcb6fae60b15dae853479.tar.gz
Add -zZ support to grep (NUL delimited input/output).
Diffstat (limited to 'toys/posix')
-rw-r--r--toys/posix/grep.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/toys/posix/grep.c b/toys/posix/grep.c
index d78f7559..aba70878 100644
--- a/toys/posix/grep.c
+++ b/toys/posix/grep.c
@@ -4,7 +4,7 @@
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html
-USE_GREP(NEWTOY(grep, "EFHabhinorsvwclqe*f*m#x[!wx][!EFw]", TOYFLAG_BIN))
+USE_GREP(NEWTOY(grep, "ZzEFHabhinorsvwclqe*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))
@@ -26,13 +26,14 @@ config GREP
-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
+ -z input NUL terminated
display modes: (default: matched line)
-c count of matching lines -l show matching filenames
-o only matching part -q quiet (errors only)
- -s silent (no error msg)
+ -s silent (no error msg) -Z output NUL terminated
- prefix modes (default: filename if checking more than 1 file)
+ output prefix (default: filename if checking more than 1 file)
-H force filename -b byte offset of match
-h hide filename -n line number of match
*/
@@ -54,6 +55,8 @@ static void do_grep(int fd, char *name)
FILE *file = fdopen(fd, "r");
long offset = 0;
int lcount = 0, mcount = 0, which = toys.optflags & FLAG_w ? 2 : 0;
+ char indelim = '\n' * !(toys.optflags&FLAG_z),
+ outdelim = '\n' * !(toys.optflags&FLAG_Z);
if (!fd) name = "(standard input)";
@@ -70,8 +73,8 @@ static void do_grep(int fd, char *name)
int mmatch = 0;
lcount++;
- if (0 > (len = getline(&line, &unused, file))) break;
- if (line[len-1] == '\n') line[len-1] = 0;
+ if (0 > (len = getdelim(&line, &unused, indelim, file))) break;
+ if (line[len-1] == indelim) line[len-1] = 0;
start = line;
@@ -134,7 +137,7 @@ static void do_grep(int fd, char *name)
toys.exitval = 0;
if (toys.optflags & FLAG_q) xexit();
if (toys.optflags & FLAG_l) {
- printf("%s\n", name);
+ printf("%s%c", name, outdelim);
free(line);
fclose(file);
return;
@@ -149,10 +152,10 @@ static void do_grep(int fd, char *name)
if (toys.optflags & FLAG_b)
printf("%ld:", offset + (start-line) +
((toys.optflags & FLAG_o) ? matches[which].rm_so : 0));
- if (!(toys.optflags & FLAG_o)) xputs(line);
+ if (!(toys.optflags & FLAG_o)) xprintf("%s%c", line, outdelim);
else {
- xprintf("%.*s\n", matches[which].rm_eo - matches[which].rm_so,
- start + matches[which].rm_so);
+ xprintf("%.*s%c", matches[which].rm_eo - matches[which].rm_so,
+ start + matches[which].rm_so, outdelim);
}
}
@@ -169,7 +172,7 @@ static void do_grep(int fd, char *name)
if (toys.optflags & FLAG_c) {
if (toys.optflags & FLAG_H) printf("%s:", name);
- xprintf("%d\n", mcount);
+ xprintf("%d%c", mcount, outdelim);
}
// loopfiles will also close the fd, but this frees an (opaque) struct.