summaryrefslogtreecommitdiff
path: root/grep.c
diff options
context:
space:
mode:
authorEric Andersen1999-10-22 04:30:20 +0000
committerEric Andersen1999-10-22 04:30:20 +0000
commitaa0765e11bdeba5c5abf745369a8430c8311d60c (patch)
tree3593c1a2ff03bfa79982fa12b55c9489f969e057 /grep.c
parentc49960189a04b73e033016bd0f43fbb950f800e1 (diff)
downloadbusybox-aa0765e11bdeba5c5abf745369a8430c8311d60c.zip
busybox-aa0765e11bdeba5c5abf745369a8430c8311d60c.tar.gz
Added regexp support, fixed Changelog.
Diffstat (limited to 'grep.c')
-rw-r--r--grep.c46
1 files changed, 10 insertions, 36 deletions
diff --git a/grep.c b/grep.c
index a495c62..44ca028 100644
--- a/grep.c
+++ b/grep.c
@@ -22,6 +22,7 @@
*/
#include "internal.h"
+#include "regexp.h"
#include <stdio.h>
#include <dirent.h>
#include <errno.h>
@@ -30,44 +31,17 @@
#include <time.h>
#include <ctype.h>
-
static const char grep_usage[] =
"grep [-ihn]... PATTERN [FILE]...\n"
"Search for PATTERN in each FILE or standard input.\n\n"
"\t-h\tsuppress the prefixing filename on output\n"
"\t-i\tignore case distinctions\n"
"\t-n\tprint line number with output lines\n\n"
+#if defined BB_REGEXP
+"This version of grep matches full regexps.\n";
+#else
"This version of grep matches strings (not full regexps).\n";
-
-
-/*
- * See if the specified needle is found in the specified haystack.
- */
-static int search (const char *haystack, const char *needle, int ignoreCase)
-{
-
- if (ignoreCase == FALSE) {
- haystack = strstr (haystack, needle);
- if (haystack == NULL)
- return FALSE;
- return TRUE;
- } else {
- int i;
- char needle1[BUF_SIZE];
- char haystack1[BUF_SIZE];
-
- strncpy( haystack1, haystack, sizeof(haystack1));
- strncpy( needle1, needle, sizeof(needle1));
- for( i=0; i<sizeof(haystack1) && haystack1[i]; i++)
- haystack1[i]=tolower( haystack1[i]);
- for( i=0; i<sizeof(needle1) && needle1[i]; i++)
- needle1[i]=tolower( needle1[i]);
- haystack = strstr (haystack1, needle1);
- if (haystack == NULL)
- return FALSE;
- return TRUE;
- }
-}
+#endif
extern int grep_main (int argc, char **argv)
@@ -80,7 +54,7 @@ extern int grep_main (int argc, char **argv)
int ignoreCase=FALSE;
int tellLine=FALSE;
long line;
- char buf[BUF_SIZE];
+ char haystack[BUF_SIZE];
ignoreCase = FALSE;
tellLine = FALSE;
@@ -128,21 +102,21 @@ extern int grep_main (int argc, char **argv)
line = 0;
- while (fgets (buf, sizeof (buf), fp)) {
+ while (fgets (haystack, sizeof (haystack), fp)) {
line++;
- cp = &buf[strlen (buf) - 1];
+ cp = &haystack[strlen (haystack) - 1];
if (*cp != '\n')
fprintf (stderr, "%s: Line too long\n", name);
- if (search (buf, needle, ignoreCase)==TRUE) {
+ if (find_match(haystack, needle, ignoreCase) == TRUE) {
if (tellName==TRUE)
printf ("%s: ", name);
if (tellLine==TRUE)
printf ("%ld: ", line);
- fputs (buf, stdout);
+ fputs (haystack, stdout);
}
}