summaryrefslogtreecommitdiff
path: root/grep.c
diff options
context:
space:
mode:
authorEric Andersen1999-11-09 01:47:36 +0000
committerEric Andersen1999-11-09 01:47:36 +0000
commit50d6360771be509737bb55b2cc5bc5e25f2a4fea (patch)
tree81d4cfe9ec9b5281924f678c28f61542616a3db7 /grep.c
parentfbb39c83b69d6c4de943c0b7374000339635d13d (diff)
downloadbusybox-50d6360771be509737bb55b2cc5bc5e25f2a4fea.zip
busybox-50d6360771be509737bb55b2cc5bc5e25f2a4fea.tar.gz
Stuff
Diffstat (limited to 'grep.c')
-rw-r--r--grep.c79
1 files changed, 38 insertions, 41 deletions
diff --git a/grep.c b/grep.c
index 50a2961..8dcff05 100644
--- a/grep.c
+++ b/grep.c
@@ -40,45 +40,46 @@ static const char grep_usage[] =
#if defined BB_REGEXP
"This version of grep matches full regexps.\n";
#else
-"This version of grep matches strings (not full regexps).\n";
+"This version of grep matches strings (not regexps).\n";
#endif
-int tellName=TRUE;
-int ignoreCase=FALSE;
-int tellLine=FALSE;
-static do_grep(char* needle, char* haystack )
+static void do_grep(FILE *fp, char* needle, char *fileName, int tellName, int ignoreCase, int tellLine)
{
- line = 0;
+ char *cp;
+ long line = 0;
+ char haystack[BUF_SIZE];
- while (fgets (haystack, sizeof (haystack), fp)) {
- line++;
- cp = &haystack[strlen (haystack) - 1];
+ while (fgets (haystack, sizeof (haystack), fp)) {
+ line++;
+ cp = &haystack[strlen (haystack) - 1];
- if (*cp != '\n')
- fprintf (stderr, "%s: Line too long\n", name);
+ if (*cp != '\n')
+ fprintf (stderr, "%s: Line too long\n", fileName);
- if (find_match(haystack, needle, ignoreCase) == TRUE) {
- if (tellName==TRUE)
- printf ("%s: ", name);
+ if (find_match(haystack, needle, ignoreCase) == TRUE) {
+ if (tellName==TRUE)
+ printf ("%s:", fileName);
- if (tellLine==TRUE)
- printf ("%ld: ", line);
+ if (tellLine==TRUE)
+ printf ("%ld:", line);
- fputs (haystack, stdout);
- }
+ fputs (haystack, stdout);
}
+ }
}
extern int grep_main (int argc, char **argv)
{
FILE *fp;
- char *needle;
- char *name;
char *cp;
- long line;
- char haystack[BUF_SIZE];
+ char *needle;
+ char *fileName;
+ int tellName=FALSE;
+ int ignoreCase=FALSE;
+ int tellLine=FALSE;
+
ignoreCase = FALSE;
tellLine = FALSE;
@@ -100,7 +101,7 @@ extern int grep_main (int argc, char **argv)
break;
case 'h':
- tellName = FALSE;
+ tellName = TRUE;
break;
case 'n':
@@ -115,28 +116,24 @@ extern int grep_main (int argc, char **argv)
needle = *argv++;
argc--;
+ if (argc==0) {
+ do_grep( stdin, needle, "stdin", FALSE, ignoreCase, tellLine);
+ } else {
+ while (argc-- > 0) {
+ fileName = *argv++;
- while (argc-- > 0) {
-
- if (argc==0) {
- file = stdin;
- }
- else
- file = fopen(*argv, "r");
-
+ fp = fopen (fileName, "r");
+ if (fp == NULL) {
+ perror (fileName);
+ continue;
+ }
- name = *argv++;
+ do_grep( fp, needle, fileName, tellName, ignoreCase, tellLine);
- fp = fopen (name, "r");
- if (fp == NULL) {
- perror (name);
- continue;
+ if (ferror (fp))
+ perror (fileName);
+ fclose (fp);
}
-
- if (ferror (fp))
- perror (name);
-
- fclose (fp);
}
exit( TRUE);
}