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-rw-r--r--findutils/grep.c179
1 files changed, 107 insertions, 72 deletions
diff --git a/findutils/grep.c b/findutils/grep.c
index c0c495b..1285d21 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -24,43 +24,41 @@
/* options */
-static unsigned opt;
-#define GREP_OPTS "lnqvscFiHhe:f:Lo"
+#define GREP_OPTS "lnqvscFiHhe:f:Lor"
#define GREP_OPT_l (1<<0)
-#define PRINT_FILES_WITH_MATCHES (opt & GREP_OPT_l)
+#define PRINT_FILES_WITH_MATCHES (option_mask32 & GREP_OPT_l)
#define GREP_OPT_n (1<<1)
-#define PRINT_LINE_NUM (opt & GREP_OPT_n)
+#define PRINT_LINE_NUM (option_mask32 & GREP_OPT_n)
#define GREP_OPT_q (1<<2)
-#define BE_QUIET (opt & GREP_OPT_q)
+#define BE_QUIET (option_mask32 & GREP_OPT_q)
#define GREP_OPT_v (1<<3)
-typedef char invert_search_t;
-static invert_search_t invert_search;
#define GREP_OPT_s (1<<4)
-#define SUPPRESS_ERR_MSGS (opt & GREP_OPT_s)
+#define SUPPRESS_ERR_MSGS (option_mask32 & GREP_OPT_s)
#define GREP_OPT_c (1<<5)
-#define PRINT_MATCH_COUNTS (opt & GREP_OPT_c)
+#define PRINT_MATCH_COUNTS (option_mask32 & GREP_OPT_c)
#define GREP_OPT_F (1<<6)
-#define FGREP_FLAG (opt & GREP_OPT_F)
+#define FGREP_FLAG (option_mask32 & GREP_OPT_F)
#define GREP_OPT_i (1<<7)
#define GREP_OPT_H (1<<8)
#define GREP_OPT_h (1<<9)
#define GREP_OPT_e (1<<10)
#define GREP_OPT_f (1<<11)
#define GREP_OPT_L (1<<12)
-#define PRINT_FILES_WITHOUT_MATCHES (opt & GREP_OPT_L)
+#define PRINT_FILES_WITHOUT_MATCHES (option_mask32 & GREP_OPT_L)
#define GREP_OPT_o (1<<13)
+#define GREP_OPT_r (1<<14)
#if ENABLE_FEATURE_GREP_CONTEXT
-#define GREP_OPT_CONTEXT "A:B:C:"
-#define GREP_OPT_A (1<<14)
-#define GREP_OPT_B (1<<15)
-#define GREP_OPT_C (1<<16)
-#define GREP_OPT_E (1<<17)
+# define GREP_OPT_CONTEXT "A:B:C:"
+# define GREP_OPT_A (1<<15)
+# define GREP_OPT_B (1<<16)
+# define GREP_OPT_C (1<<17)
+# define GREP_OPT_E (1<<18)
#else
-#define GREP_OPT_CONTEXT ""
-#define GREP_OPT_A 0
-#define GREP_OPT_B 0
-#define GREP_OPT_C 0
-#define GREP_OPT_E (1<<14)
+# define GREP_OPT_CONTEXT ""
+# define GREP_OPT_A 0
+# define GREP_OPT_B 0
+# define GREP_OPT_C 0
+# define GREP_OPT_E (1<<15)
#endif
#if ENABLE_FEATURE_GREP_EGREP_ALIAS
# define OPT_EGREP "E"
@@ -68,8 +66,12 @@ static invert_search_t invert_search;
# define OPT_EGREP ""
#endif
+typedef unsigned char byte_t;
+
static int reflags;
-static int print_filename;
+static byte_t invert_search;
+static byte_t print_filename;
+static byte_t open_errors;
#if ENABLE_FEATURE_GREP_CONTEXT
static int lines_before;
@@ -80,7 +82,7 @@ static int last_line_printed;
/* globals used internally */
static llist_t *pattern_head; /* growable list of patterns to match */
-static char *cur_file; /* the current file we are reading */
+static const char *cur_file; /* the current file we are reading */
typedef struct GREP_LIST_DATA {
char *pattern;
@@ -100,12 +102,12 @@ static void print_line(const char *line, int linenum, char decoration)
}
last_line_printed = linenum;
#endif
- if (print_filename > 0)
+ if (print_filename)
printf("%s%c", cur_file, decoration);
if (PRINT_LINE_NUM)
printf("%i%c", linenum, decoration);
/* Emulate weird GNU grep behavior with -ov */
- if ((opt & (GREP_OPT_v+GREP_OPT_o)) != (GREP_OPT_v+GREP_OPT_o))
+ if ((option_mask32 & (GREP_OPT_v+GREP_OPT_o)) != (GREP_OPT_v+GREP_OPT_o))
puts(line);
}
@@ -113,7 +115,7 @@ static void print_line(const char *line, int linenum, char decoration)
static int grep_file(FILE *file)
{
char *line;
- invert_search_t ret;
+ byte_t ret;
int linenum = 0;
int nmatches = 0;
regmatch_t regmatch;
@@ -199,7 +201,7 @@ static int grep_file(FILE *file)
/* make a note that we need to print 'after' lines */
print_n_lines_after = lines_after;
#endif
- if (opt & GREP_OPT_o) {
+ if (option_mask32 & GREP_OPT_o) {
line[regmatch.rm_eo] = '\0';
print_line(line + regmatch.rm_so, linenum, ':');
} else {
@@ -231,7 +233,7 @@ static int grep_file(FILE *file)
/* grep -c: print [filename:]count, even if count is zero */
if (PRINT_MATCH_COUNTS) {
- if (print_filename > 0)
+ if (print_filename)
printf("%s:", cur_file);
printf("%d\n", nmatches);
}
@@ -288,48 +290,71 @@ static void load_regexes_from_file(llist_t *fopt)
}
+static int file_action_grep(const char *filename, struct stat *statbuf, void* matched)
+{
+ FILE *file = fopen(filename, "r");
+ if (file == NULL) {
+ if (!SUPPRESS_ERR_MSGS)
+ bb_perror_msg("%s", cur_file);
+ open_errors = 1;
+ return 0;
+ }
+ cur_file = filename;
+ *(int*)matched += grep_file(file);
+ return 1;
+}
+
+
+static int grep_dir(const char *dir)
+{
+ int matched = 0;
+ recursive_action(dir,
+ /* recurse= */ 1,
+ /* followLinks= */ 0,
+ /* depthFirst= */ 1,
+ /* fileAction= */ file_action_grep,
+ /* dirAction= */ NULL,
+ /* userData= */ &matched);
+ return matched;
+}
+
+
int grep_main(int argc, char **argv)
{
FILE *file;
int matched;
llist_t *fopt = NULL;
- int error_open_count = 0;
/* do normal option parsing */
#if ENABLE_FEATURE_GREP_CONTEXT
- char *junk;
char *slines_after;
char *slines_before;
char *Copt;
opt_complementary = "H-h:e::f::C-AB";
- opt = getopt32(argc, argv,
+ getopt32(argc, argv,
GREP_OPTS GREP_OPT_CONTEXT OPT_EGREP,
&pattern_head, &fopt,
&slines_after, &slines_before, &Copt);
- if (opt & GREP_OPT_C) {
+ if (option_mask32 & 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 (!(option_mask32 & GREP_OPT_A)) /* not overwtited */
slines_after = Copt;
- if (!(opt & GREP_OPT_B)) /* not overwtited */
+ if (!(option_mask32 & GREP_OPT_B)) /* not overwtited */
slines_before = Copt;
- opt |= GREP_OPT_A|GREP_OPT_B; /* set for parse now */
+ option_mask32 |= GREP_OPT_A|GREP_OPT_B; /* set for parse now */
}
- if (opt & GREP_OPT_A) {
- lines_after = strtoul(slines_after, &junk, 10);
- if (*junk != '\0')
- bb_error_msg_and_die(bb_msg_invalid_arg, slines_after, "-A");
+ if (option_mask32 & GREP_OPT_A) {
+ lines_after = xatoi_u(slines_after);
}
- if (opt & GREP_OPT_B) {
- lines_before = strtoul(slines_before, &junk, 10);
- if (*junk != '\0')
- bb_error_msg_and_die(bb_msg_invalid_arg, slines_before, "-B");
+ if (option_mask32 & GREP_OPT_B) {
+ lines_before = xatoi_u(slines_before);
}
/* sanity checks after parse may be invalid numbers ;-) */
- if (opt & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l|GREP_OPT_L)) {
- opt &= ~GREP_OPT_n;
+ if (option_mask32 & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l|GREP_OPT_L)) {
+ option_mask32 &= ~GREP_OPT_n;
lines_before = 0;
lines_after = 0;
} else if (lines_before > 0)
@@ -337,15 +362,15 @@ int grep_main(int argc, char **argv)
#else
/* with auto sanity checks */
opt_complementary = "H-h:e::f::c-n:q-n:l-n";
- opt = getopt32(argc, argv, GREP_OPTS OPT_EGREP,
+ getopt32(argc, argv, GREP_OPTS OPT_EGREP,
&pattern_head, &fopt);
#endif
- invert_search = (opt & GREP_OPT_v) != 0; /* 0 | 1 */
+ invert_search = (option_mask32 & GREP_OPT_v) != 0; /* 0 | 1 */
- if (opt & GREP_OPT_H)
- print_filename++;
- if (opt & GREP_OPT_h)
- print_filename--;
+ if (option_mask32 & GREP_OPT_H)
+ print_filename = 1;
+ if (option_mask32 & GREP_OPT_h)
+ print_filename = 0;
if (pattern_head != NULL) {
/* convert char *argv[] to grep_list_data_t */
llist_t *cur;
@@ -353,20 +378,20 @@ int grep_main(int argc, char **argv)
for (cur = pattern_head; cur; cur = cur->link)
cur->data = new_grep_list_data(cur->data, 0);
}
- if (opt & GREP_OPT_f)
+ if (option_mask32 & GREP_OPT_f)
load_regexes_from_file(fopt);
if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
- opt |= GREP_OPT_F;
+ option_mask32 |= GREP_OPT_F;
- if (!(opt & GREP_OPT_o))
+ if (!(option_mask32 & GREP_OPT_o))
reflags = REG_NOSUB;
if (ENABLE_FEATURE_GREP_EGREP_ALIAS &&
- (applet_name[0] == 'e' || (opt & GREP_OPT_E)))
+ (applet_name[0] == 'e' || (option_mask32 & GREP_OPT_E)))
reflags |= REG_EXTENDED;
- if (opt & GREP_OPT_i)
+ if (option_mask32 & GREP_OPT_i)
reflags |= REG_ICASE;
argv += optind;
@@ -386,9 +411,9 @@ int grep_main(int argc, char **argv)
}
/* 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 */
+ * there is more than one file to grep, we will print the filenames. */
if (argc > 1) {
- print_filename++;
+ print_filename = 1;
/* If no files were specified, or '-' was specified, take input from
* stdin. Otherwise, we grep through all the files specified. */
@@ -398,25 +423,35 @@ int grep_main(int argc, char **argv)
matched = 0;
while (argc--) {
cur_file = *argv++;
+ file = stdin;
if (!cur_file || (*cur_file == '-' && !cur_file[1])) {
cur_file = "(standard input)";
- file = stdin;
} else {
+ if (option_mask32 & GREP_OPT_r) {
+ struct stat st;
+ if (stat(cur_file, &st) == 0 && S_ISDIR(st.st_mode)) {
+ print_filename = 1;
+ matched += grep_dir(cur_file);
+ goto grep_done;
+ }
+ }
+ /* else: fopen(dir) will succeed, but reading won't */
file = fopen(cur_file, "r");
- }
- if (file == NULL) {
- if (!SUPPRESS_ERR_MSGS)
- bb_perror_msg("%s", cur_file);
- error_open_count++;
- } else {
- matched += grep_file(file);
- if (matched < 0) {
- /* we found a match but were told to be quiet, stop here and
- * return success */
- break;
+ if (file == NULL) {
+ if (!SUPPRESS_ERR_MSGS)
+ bb_perror_msg("%s", cur_file);
+ open_errors = 1;
+ continue;
}
- fclose(file);
}
+ matched += grep_file(file);
+ grep_done:
+ if (matched < 0) {
+ /* we found a match but were told to be quiet, stop here and
+ * return success */
+ break;
+ }
+ bb_fclose_nonstdin(file);
}
/* destroy all the elments in the pattern list */
@@ -439,7 +474,7 @@ int grep_main(int argc, char **argv)
* if an input line is selected, even if an error was detected. */
if (BE_QUIET && matched)
return 0;
- if (error_open_count)
+ if (open_errors)
return 2;
return !matched; /* invert return value 0 = success, 1 = failed */
}
generated by cgit v1.1 at 2024-12-27 21:43:31 +0000