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grep: add support for -r

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This commit is contained in:
Denis Vlasenko 2006-10-14 14:24:30 +00:00
parent c345d8e945
commit 3a6755f56f
5 changed files with 145 additions and 109 deletions
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4
findutils/find.c
View File

@ -74,7 +74,7 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
tmp = fileName;
else
tmp++;
if (!(fnmatch(pattern, tmp, FNM_PERIOD) == 0))
if (fnmatch(pattern, tmp, FNM_PERIOD) != 0)
goto no_match;
}
#ifdef CONFIG_FEATURE_FIND_TYPE
@ -144,7 +144,7 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
puts(fileName);
#endif
no_match:
return (TRUE);
return TRUE;
}
#ifdef CONFIG_FEATURE_FIND_TYPE

155
findutils/grep.c
View File

@ -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_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_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 {
file = fopen(cur_file, "r");
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 {
open_errors = 1;
continue;
}
}
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;
}
fclose(file);
}
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 */
}

3
include/usage.h
View File

@ -992,7 +992,7 @@ USE_FEATURE_DATE_ISOFMT( \
"\t-H login_host\tLog login_host into the utmp file as the hostname"
#define grep_trivial_usage \
"[-ihHnqvso" \
"[-rihHnqvso" \
USE_FEATURE_GREP_EGREP_ALIAS("E") \
USE_FEATURE_GREP_CONTEXT("ABC") \
"] PATTERN [FILEs...]"
@ -1001,6 +1001,7 @@ USE_FEATURE_DATE_ISOFMT( \
"Options:\n" \
"\t-H\tprefix output lines with filename where match was found\n" \
"\t-h\tsuppress the prefixing filename on output\n" \
"\t-r\trecurse subdirectories\n" \
"\t-i\tignore case distinctions\n" \
"\t-l\tlist names of files that match\n" \
"\t-L\tlist names of files that do not match\n" \