Some formatting updates (ran the code through indent)
-Erik
This commit is contained in:
190
grep.c
190
grep.c
@ -1,3 +1,4 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Mini grep implementation for busybox
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*
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@ -40,126 +41,125 @@
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#include <ctype.h>
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static const char grep_usage[] =
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"grep [OPTIONS]... PATTERN [FILE]...\n\n"
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"Search for PATTERN in each FILE or standard input.\n\n"
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"OPTIONS:\n"
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"\t-h\tsuppress the prefixing filename on output\n"
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"\t-i\tignore case distinctions\n"
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"\t-n\tprint line number with output lines\n"
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"\t-q\tbe quiet. Returns 0 if result was found, 1 otherwise\n\n"
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"grep [OPTIONS]... PATTERN [FILE]...\n\n"
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"Search for PATTERN in each FILE or standard input.\n\n"
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"OPTIONS:\n"
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"\t-h\tsuppress the prefixing filename on output\n"
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"\t-i\tignore case distinctions\n"
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"\t-n\tprint line number with output lines\n"
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"\t-q\tbe quiet. Returns 0 if result was found, 1 otherwise\n\n"
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#if defined BB_REGEXP
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"This version of grep matches full regular expresions.\n";
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"This version of grep matches full regular expresions.\n";
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#else
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"This version of grep matches strings (not regular expresions).\n";
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"This version of grep matches strings (not regular expresions).\n";
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#endif
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static int match = FALSE, beQuiet = FALSE;
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static void do_grep(FILE *fp, char* needle, char *fileName, int tellName, int ignoreCase, int tellLine)
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static void do_grep(FILE * fp, char *needle, char *fileName, int tellName,
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int ignoreCase, int tellLine)
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{
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char *cp;
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long line = 0;
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char haystack[BUF_SIZE];
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char *cp;
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long line = 0;
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char haystack[BUF_SIZE];
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while (fgets (haystack, sizeof (haystack), fp)) {
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line++;
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cp = &haystack[strlen (haystack) - 1];
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while (fgets(haystack, sizeof(haystack), fp)) {
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line++;
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cp = &haystack[strlen(haystack) - 1];
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if (*cp != '\n')
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fprintf (stderr, "%s: Line too long\n", fileName);
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if (*cp != '\n')
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fprintf(stderr, "%s: Line too long\n", fileName);
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if (find_match(haystack, needle, ignoreCase) == TRUE) {
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if (tellName==TRUE)
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printf ("%s:", fileName);
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if (find_match(haystack, needle, ignoreCase) == TRUE) {
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if (tellName == TRUE)
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printf("%s:", fileName);
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if (tellLine==TRUE)
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printf ("%ld:", line);
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if (tellLine == TRUE)
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printf("%ld:", line);
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if (beQuiet==FALSE)
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fputs (haystack, stdout);
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if (beQuiet == FALSE)
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fputs(haystack, stdout);
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match = TRUE;
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match = TRUE;
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}
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}
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}
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}
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extern int grep_main (int argc, char **argv)
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extern int grep_main(int argc, char **argv)
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{
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FILE *fp;
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char *cp;
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char *needle;
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char *fileName;
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int tellName=TRUE;
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int ignoreCase=TRUE;
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int tellLine=FALSE;
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FILE *fp;
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char *cp;
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char *needle;
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char *fileName;
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int tellName = TRUE;
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int ignoreCase = TRUE;
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int tellLine = FALSE;
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ignoreCase = FALSE;
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tellLine = FALSE;
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ignoreCase = FALSE;
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tellLine = FALSE;
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argc--;
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argv++;
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if (argc < 1) {
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usage(grep_usage);
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}
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if (**argv == '-') {
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argc--;
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cp = *argv++;
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while (*++cp)
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switch (*cp) {
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case 'i':
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ignoreCase = TRUE;
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break;
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case 'h':
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tellName = FALSE;
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break;
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case 'n':
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tellLine = TRUE;
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break;
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case 'q':
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beQuiet = TRUE;
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break;
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default:
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argv++;
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if (argc < 1) {
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usage(grep_usage);
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}
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}
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needle = *argv++;
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argc--;
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if (argc==0) {
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do_grep( stdin, needle, "stdin", FALSE, ignoreCase, tellLine);
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} else {
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/* Never print the filename for just one file */
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if (argc==1)
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tellName=FALSE;
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while (argc-- > 0) {
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fileName = *argv++;
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fp = fopen (fileName, "r");
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if (fp == NULL) {
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perror (fileName);
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continue;
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}
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do_grep( fp, needle, fileName, tellName, ignoreCase, tellLine);
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if (ferror (fp))
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perror (fileName);
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fclose (fp);
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}
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}
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exit(match);
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if (**argv == '-') {
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argc--;
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cp = *argv++;
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while (*++cp)
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switch (*cp) {
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case 'i':
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ignoreCase = TRUE;
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break;
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case 'h':
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tellName = FALSE;
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break;
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case 'n':
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tellLine = TRUE;
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break;
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case 'q':
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beQuiet = TRUE;
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break;
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default:
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usage(grep_usage);
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}
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}
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needle = *argv++;
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argc--;
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if (argc == 0) {
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do_grep(stdin, needle, "stdin", FALSE, ignoreCase, tellLine);
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} else {
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/* Never print the filename for just one file */
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if (argc == 1)
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tellName = FALSE;
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while (argc-- > 0) {
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fileName = *argv++;
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fp = fopen(fileName, "r");
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if (fp == NULL) {
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perror(fileName);
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continue;
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}
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do_grep(fp, needle, fileName, tellName, ignoreCase, tellLine);
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if (ferror(fp))
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perror(fileName);
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fclose(fp);
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}
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}
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exit(match);
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}
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/* END CODE */
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