#include <ctype.h>
static const char sed_usage[] =
-"sed [-n] [-e script] [file...]\n"
-"Allowed scripts come in the following form:\n\n"
-"'s/regexp/replacement/[gp]'\n"
-"\tattempt to match regexp against the pattern space\n"
-"\tand if successful replaces the matched portion with replacement.\n\n"
+"sed [-n] [-e script] [file...]\n\n"
+"Allowed sed scripts come in the following form:\n"
+"\t's/regexp/replacement/[gp]'\n"
+"which attempt to match regexp against the pattern space\n"
+"and if successful replaces the matched portion with replacement.\n\n"
"Options:\n"
"-e\tadd the script to the commands to be executed\n"
"-n\tsuppress automatic printing of pattern space\n\n"
#if defined BB_REGEXP
-"This version of sed matches full regexps.\n";
+"This version of sed matches full regular expresions.\n";
#else
-"This version of sed matches strings (not full regexps).\n";
+"This version of sed matches strings (not full regular expresions).\n";
#endif
+
+static void do_sed(FILE *fp, char *needle, char *newNeedle, int ignoreCase, int printFlag, int quietFlag)
+{
+ int foundOne=FALSE;
+ char haystack[1024];
-
+ while (fgets (haystack, 1023, fp)) {
+ foundOne = replace_match(haystack, needle, newNeedle, ignoreCase);
+ if (foundOne==TRUE && printFlag==TRUE) {
+ fprintf(stdout, haystack);
+ }
+ if (quietFlag==FALSE) {
+ fprintf(stdout, haystack);
+ }
+ }
+}
extern int sed_main (int argc, char **argv)
{
char *name;
char *cp;
int ignoreCase=FALSE;
- int foundOne=FALSE;
- int noprintFlag=FALSE;
+ int printFlag=FALSE;
+ int quietFlag=FALSE;
int stopNow;
- char *haystack;
argc--;
argv++;
cp = *argv++;
stopNow=FALSE;
- while (*++cp && stopNow==FALSE)
+ while (*++cp && stopNow==FALSE) {
switch (*cp) {
case 'n':
- noprintFlag = TRUE;
+ quietFlag = TRUE;
break;
case 'e':
if (*(cp+1)==0 && --argc < 0) {
- fprintf(stderr, "A\n");
usage( sed_usage);
}
- cp = *argv++;
+ if ( *++cp != 's')
+ cp = *argv++;
while( *cp ) {
if (*cp == 's' && strlen(cp) > 3 && *(cp+1) == '/') {
char* pos=needle=cp+2;
for(;;) {
pos = strchr(pos, '/');
if (pos==NULL) {
- fprintf(stderr, "B\n");
usage( sed_usage);
}
if (*(pos-1) == '\\') {
for(;;) {
pos = strchr(pos, '/');
if (pos==NULL) {
- fprintf(stderr, "C\n");
usage( sed_usage);
}
if (*(pos-1) == '\\') {
break;
}
*pos=0;
+ if (pos+2 != 0) {
+ while (*++pos) {
+ switch (*pos) {
+ case 'i':
+ ignoreCase=TRUE;
+ break;
+ case 'p':
+ printFlag=TRUE;
+ break;
+ case 'g':
+ break;
+ default:
+ usage( sed_usage);
+ }
+ }
+ }
}
cp++;
}
- fprintf(stderr, "replace '%s' with '%s'\n", needle, newNeedle);
+ //fprintf(stderr, "replace '%s' with '%s'\n", needle, newNeedle);
stopNow=TRUE;
break;
default:
- fprintf(stderr, "D\n");
usage(sed_usage);
}
+ }
}
- fprintf(stderr, "argc=%d\n", argc);
- while (argc-- > 0) {
- name = *argv++;
+ if (argc==0) {
+ do_sed( stdin, needle, newNeedle, ignoreCase, printFlag, quietFlag);
+ } else {
+ while (argc-- > 0) {
+ name = *argv++;
- fp = fopen (name, "r");
- if (fp == NULL) {
- perror (name);
- continue;
- }
- fprintf(stderr, "filename is '%s'\n", name);
-
- haystack = (char*)malloc( 80);
- while (fgets (haystack, sizeof (haystack), fp)) {
-
- foundOne = replace_match(haystack, needle, newNeedle, ignoreCase);
- if (noprintFlag==TRUE && foundOne==TRUE)
- fputs (haystack, stdout);
- else
- fputs (haystack, stdout);
- /* Avoid any mem leaks */
- free(haystack);
- haystack = (char*)malloc( BUF_SIZE);
- }
+ fp = fopen (name, "r");
+ if (fp == NULL) {
+ perror (name);
+ continue;
+ }
- if (ferror (fp))
- perror (name);
+ do_sed( fp, needle, newNeedle, ignoreCase, printFlag, quietFlag);
- fclose (fp);
+ if (ferror (fp))
+ perror (name);
+
+ fclose (fp);
+ }
}
exit( TRUE);
}