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grep: implement -w

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This commit is contained in:
Denis Vlasenko
2007-02-25 02:38:20 +00:00
parent 4222ae440a
commit 385304d449
1 changed files with 96 additions and 76 deletions
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172
findutils/grep.c
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@@ -22,49 +22,63 @@
#include "busybox.h"
#include "xregex.h"
/* options */
#define GREP_OPTS "lnqvscFiHhe:f:Lor"
#define GREP_OPT_l (1<<0)
#define PRINT_FILES_WITH_MATCHES (option_mask32 & GREP_OPT_l)
#define GREP_OPT_n (1<<1)
#define PRINT_LINE_NUM (option_mask32 & GREP_OPT_n)
#define GREP_OPT_q (1<<2)
#define BE_QUIET (option_mask32 & GREP_OPT_q)
#define GREP_OPT_v (1<<3)
#define GREP_OPT_s (1<<4)
#define SUPPRESS_ERR_MSGS (option_mask32 & GREP_OPT_s)
#define GREP_OPT_c (1<<5)
#define PRINT_MATCH_COUNTS (option_mask32 & GREP_OPT_c)
#define GREP_OPT_F (1<<6)
#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 (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<<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<<15)
#endif
#if ENABLE_FEATURE_GREP_EGREP_ALIAS
# define OPT_EGREP "E"
#else
# define OPT_EGREP ""
#endif
#define OPTSTR_GREP \
"lnqvscFiHhe:f:Lor" \
USE_FEATURE_GREP_CONTEXT("A:B:C:") \
USE_FEATURE_GREP_EGREP_ALIAS("E") \
USE_DESKTOP("w") \
enum {
OPTBIT_l,
OPTBIT_n,
OPTBIT_q,
OPTBIT_v,
OPTBIT_s,
OPTBIT_c,
OPTBIT_F,
OPTBIT_i,
OPTBIT_H,
OPTBIT_h,
OPTBIT_e,
OPTBIT_f,
OPTBIT_L,
OPTBIT_o,
OPTBIT_r,
USE_FEATURE_GREP_CONTEXT(OPTBIT_A ,)
USE_FEATURE_GREP_CONTEXT(OPTBIT_B ,)
USE_FEATURE_GREP_CONTEXT(OPTBIT_C ,)
USE_FEATURE_GREP_CONTEXT(OPTBIT_E ,)
USE_DESKTOP( OPTBIT_w ,)
OPT_l = 1 << OPTBIT_l,
OPT_n = 1 << OPTBIT_n,
OPT_q = 1 << OPTBIT_q,
OPT_v = 1 << OPTBIT_v,
OPT_s = 1 << OPTBIT_s,
OPT_c = 1 << OPTBIT_c,
OPT_F = 1 << OPTBIT_F,
OPT_i = 1 << OPTBIT_i,
OPT_H = 1 << OPTBIT_H,
OPT_h = 1 << OPTBIT_h,
OPT_e = 1 << OPTBIT_e,
OPT_f = 1 << OPTBIT_f,
OPT_L = 1 << OPTBIT_L,
OPT_o = 1 << OPTBIT_o,
OPT_r = 1 << OPTBIT_r,
OPT_A = USE_FEATURE_GREP_CONTEXT((1 << OPTBIT_A)) + 0,
OPT_B = USE_FEATURE_GREP_CONTEXT((1 << OPTBIT_B)) + 0,
OPT_C = USE_FEATURE_GREP_CONTEXT((1 << OPTBIT_C)) + 0,
OPT_E = USE_FEATURE_GREP_CONTEXT((1 << OPTBIT_E)) + 0,
OPT_w = USE_DESKTOP( (1 << OPTBIT_w)) + 0,
};
#define PRINT_FILES_WITH_MATCHES (option_mask32 & OPT_l)
#define PRINT_LINE_NUM (option_mask32 & OPT_n)
#define BE_QUIET (option_mask32 & OPT_q)
#define SUPPRESS_ERR_MSGS (option_mask32 & OPT_s)
#define PRINT_MATCH_COUNTS (option_mask32 & OPT_c)
#define FGREP_FLAG (option_mask32 & OPT_F)
#define PRINT_FILES_WITHOUT_MATCHES (option_mask32 & OPT_L)
typedef unsigned char byte_t;
@@ -107,11 +121,10 @@ static void print_line(const char *line, int linenum, char decoration)
if (PRINT_LINE_NUM)
printf("%i%c", linenum, decoration);
/* Emulate weird GNU grep behavior with -ov */
if ((option_mask32 & (GREP_OPT_v+GREP_OPT_o)) != (GREP_OPT_v+GREP_OPT_o))
if ((option_mask32 & (OPT_v+OPT_o)) != (OPT_v+OPT_o))
puts(line);
}
static int grep_file(FILE *file)
{
char *line;
@@ -148,13 +161,25 @@ static int grep_file(FILE *file)
}
regmatch.rm_so = 0;
regmatch.rm_eo = 0;
ret |= regexec(&(gl->preg), line, 1, &regmatch, 0) == 0;
if (regexec(&(gl->preg), line, 1, &regmatch, 0) == 0) {
if (!(option_mask32 & OPT_w))
ret = 1;
else {
char c = ' ';
if (regmatch.rm_so)
c = line[regmatch.rm_so - 1];
if (!isalnum(c) && c != '_') {
c = line[regmatch.rm_eo];
if (!c || (!isalnum(c) && c != '_'))
ret = 1;
}
}
}
}
pattern_ptr = pattern_ptr->link;
} /* while (pattern_ptr) */
if (ret ^ invert_search) {
if (PRINT_FILES_WITH_MATCHES || BE_QUIET)
free(line);
@@ -201,7 +226,7 @@ static int grep_file(FILE *file)
/* make a note that we need to print 'after' lines */
print_n_lines_after = lines_after;
#endif
if (option_mask32 & GREP_OPT_o) {
if (option_mask32 & OPT_o) {
line[regmatch.rm_eo] = '\0';
print_line(line + regmatch.rm_so, linenum, ':');
} else {
@@ -289,7 +314,6 @@ static void load_regexes_from_file(llist_t *fopt)
}
}
static int file_action_grep(const char *filename, struct stat *statbuf, void* matched, int depth)
{
FILE *file = fopen(filename, "r");
@@ -305,7 +329,6 @@ static int file_action_grep(const char *filename, struct stat *statbuf, void* ma
return 1;
}
static int grep_dir(const char *dir)
{
int matched = 0;
@@ -320,7 +343,6 @@ static int grep_dir(const char *dir)
return matched;
}
int grep_main(int argc, char **argv);
int grep_main(int argc, char **argv)
{
@@ -336,28 +358,28 @@ int grep_main(int argc, char **argv)
opt_complementary = "H-h:e::f::C-AB";
getopt32(argc, argv,
GREP_OPTS GREP_OPT_CONTEXT OPT_EGREP,
OPTSTR_GREP,
&pattern_head, &fopt,
&slines_after, &slines_before, &Copt);
if (option_mask32 & GREP_OPT_C) {
if (option_mask32 & OPT_C) {
/* -C unsets prev -A and -B, but following -A or -B
may override it */
if (!(option_mask32 & GREP_OPT_A)) /* not overridden */
if (!(option_mask32 & OPT_A)) /* not overridden */
slines_after = Copt;
if (!(option_mask32 & GREP_OPT_B)) /* not overridden */
if (!(option_mask32 & OPT_B)) /* not overridden */
slines_before = Copt;
option_mask32 |= GREP_OPT_A|GREP_OPT_B; /* for parser */
option_mask32 |= OPT_A|OPT_B; /* for parser */
}
if (option_mask32 & GREP_OPT_A) {
if (option_mask32 & OPT_A) {
lines_after = xatoi_u(slines_after);
}
if (option_mask32 & GREP_OPT_B) {
if (option_mask32 & OPT_B) {
lines_before = xatoi_u(slines_before);
}
/* sanity checks */
if (option_mask32 & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l|GREP_OPT_L)) {
option_mask32 &= ~GREP_OPT_n;
if (option_mask32 & (OPT_c|OPT_q|OPT_l|OPT_L)) {
option_mask32 &= ~OPT_n;
lines_before = 0;
lines_after = 0;
} else if (lines_before > 0)
@@ -365,10 +387,10 @@ int grep_main(int argc, char **argv)
#else
/* with auto sanity checks */
opt_complementary = "H-h:e::f::c-n:q-n:l-n";
getopt32(argc, argv, GREP_OPTS OPT_EGREP,
getopt32(argc, argv, OPTSTR_GREP,
&pattern_head, &fopt);
#endif
invert_search = ((option_mask32 & GREP_OPT_v) != 0); /* 0 | 1 */
invert_search = ((option_mask32 & OPT_v) != 0); /* 0 | 1 */
if (pattern_head != NULL) {
/* convert char *argv[] to grep_list_data_t */
@@ -377,20 +399,20 @@ 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 (option_mask32 & GREP_OPT_f)
if (option_mask32 & OPT_f)
load_regexes_from_file(fopt);
if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
option_mask32 |= GREP_OPT_F;
option_mask32 |= OPT_F;
if (!(option_mask32 & GREP_OPT_o))
if (!(option_mask32 & (OPT_o | OPT_w)))
reflags = REG_NOSUB;
if (ENABLE_FEATURE_GREP_EGREP_ALIAS &&
(applet_name[0] == 'e' || (option_mask32 & GREP_OPT_E)))
(applet_name[0] == 'e' || (option_mask32 & OPT_E)))
reflags |= REG_EXTENDED;
if (option_mask32 & GREP_OPT_i)
if (option_mask32 & OPT_i)
reflags |= REG_ICASE;
argv += optind;
@@ -399,14 +421,12 @@ int grep_main(int argc, char **argv)
/* if we didn't get a pattern from a -e and no command file was specified,
* argv[optind] should be the pattern. no pattern, no worky */
if (pattern_head == NULL) {
char *pattern;
if (*argv == NULL)
bb_show_usage();
else {
char *pattern = new_grep_list_data(*argv++, 0);
llist_add_to(&pattern_head, pattern);
argc--;
}
pattern = new_grep_list_data(*argv++, 0);
llist_add_to(&pattern_head, pattern);
argc--;
}
/* argv[(optind)..(argc-1)] should be names of file to grep through. If
@@ -414,9 +434,9 @@ int grep_main(int argc, char **argv)
if (argc > 1)
print_filename = 1;
/* -H / -h of course override */
if (option_mask32 & GREP_OPT_H)
if (option_mask32 & OPT_H)
print_filename = 1;
if (option_mask32 & GREP_OPT_h)
if (option_mask32 & OPT_h)
print_filename = 0;
/* If no files were specified, or '-' was specified, take input from
@@ -430,10 +450,10 @@ int grep_main(int argc, char **argv)
if (!cur_file || (*cur_file == '-' && !cur_file[1])) {
cur_file = "(standard input)";
} else {
if (option_mask32 & GREP_OPT_r) {
if (option_mask32 & OPT_r) {
struct stat st;
if (stat(cur_file, &st) == 0 && S_ISDIR(st.st_mode)) {
if (!(option_mask32 & GREP_OPT_h))
if (!(option_mask32 & OPT_h))
print_filename = 1;
matched += grep_dir(cur_file);
goto grep_done;