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Added regexp support, fixed Changelog.

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This commit is contained in:
Eric Andersen
1999-10-22 04:30:20 +00:00
parent c49960189a
commit aa0765e11b
10 changed files with 1005 additions and 197 deletions
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46
findutils/grep.c
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@ -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);
}
}