Stuff

11 files changed, 229 insertions, 159 deletions

diff --git a/applets/busybox.c b/applets/busybox.c
index 05144c4..29a112b 100644
--- a/applets/busybox.c
+++ b/applets/busybox.c
@@ -142,6 +142,9 @@ static const struct Applet applets[] = {
     {"fdisk", sfdisk_main},
     {"sfdisk", sfdisk_main},
 #endif
+#ifdef BB_SED			//bin
+    {"sed", sed_main},
+#endif
 #ifdef BB_SLEEP			//bin
     {"sleep", sleep_main},
 #endif
diff --git a/busybox.c b/busybox.c
index 05144c4..29a112b 100644
--- a/busybox.c
+++ b/busybox.c
@@ -142,6 +142,9 @@ static const struct Applet applets[] = {
     {"fdisk", sfdisk_main},
     {"sfdisk", sfdisk_main},
 #endif
+#ifdef BB_SED			//bin
+    {"sed", sed_main},
+#endif
 #ifdef BB_SLEEP			//bin
     {"sleep", sleep_main},
 #endif
diff --git a/busybox.def.h b/busybox.def.h
index a79eaaf..b71c539 100644
--- a/busybox.def.h
+++ b/busybox.def.h
@@ -47,6 +47,7 @@
 #define BB_RM
 #define BB_RMDIR
 //#define BB_SFDISK
+#define BB_SED
 #define BB_SLEEP
 #define BB_SWAPONOFF
 #define BB_SYNC
diff --git a/editors/sed.c b/editors/sed.c
index 4dd552a..a3e635d 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -33,12 +33,10 @@
 
 static const char sed_usage[] = 
 "sed [-n] [-e script] [file...]\n"
-"Allowed scripts come in two forms:\n"
-"'/regexp/[gp]'\n"
-"\tattempt to match regexp against the pattern space\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."
+"\tand 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"
@@ -49,64 +47,86 @@ static const char sed_usage[] =
 #endif
 
 
-static int replaceFlag = FALSE;
-static int noprintFlag = FALSE;
 
 
 extern int sed_main (int argc, char **argv)
 {
     FILE *fp;
-    const char *needle;
-    const char *name;
-    const char *cp;
-    int tellName=TRUE;
+    char *needle=NULL, *newNeedle=NULL;
+    char *name;
+    char *cp;
     int ignoreCase=FALSE;
-    int tellLine=FALSE;
-    long line;
-    char haystack[BUF_SIZE];
-
-    ignoreCase = FALSE;
-    tellLine = FALSE;
+    int foundOne=FALSE;
+    int noprintFlag=FALSE;
+    int stopNow;
+    char *haystack;
 
     argc--;
     argv++;
     if (argc < 1) {
-	usage(grep_usage);
+	usage(sed_usage);
     }
 
     if (**argv == '-') {
 	argc--;
 	cp = *argv++;
+	stopNow=FALSE;
 
-	while (*++cp)
+	while (*++cp && stopNow==FALSE)
 	    switch (*cp) {
 	    case 'n':
 		noprintFlag = TRUE;
 		break;
 	    case 'e':
-		if (*(*argv)+1 != '\'' && **argv != '\"') {
-		    if (--argc == 0)
-			usage( mkdir_usage);
-		    ++argv;
-		    if (*(*argv)+1 != '\'' && **argv != '\"') {
-			usage( mkdir_usage);
+		if (*(cp+1)==0 && --argc < 0) {
+		    fprintf(stderr, "A\n");
+		    usage( sed_usage);
 		}
-		/* Find the specified modes */
-		mode = 0;
-		if ( parse_mode(*(++argv), &mode) == FALSE ) {
-		    fprintf(stderr, "Unknown mode: %s\n", *argv);
-		    exit( FALSE);
+		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) == '\\') {
+				pos++;
+				continue;
+			    }
+			    break;
+			}
+			*pos=0;
+			newNeedle=++pos;
+			for(;;) {
+			    pos = strchr(pos, '/');
+			    if (pos==NULL) {
+				fprintf(stderr, "C\n");
+				usage( sed_usage);
+			    }
+			    if (*(pos-1) == '\\') {
+				pos++;
+				continue;
+			    }
+			    break;
+			}
+			*pos=0;
+		    }
+		    cp++;
 		}
+		fprintf(stderr, "replace '%s' with '%s'\n", needle, newNeedle);
+		stopNow=TRUE;
 		break;
 
 	    default:
-		usage(grep_usage);
+		fprintf(stderr, "D\n");
+		usage(sed_usage);
 	    }
     }
 
-    needle = *argv++;
-    argc--;
-
+    fprintf(stderr, "argc=%d\n", argc);
     while (argc-- > 0) {
 	name = *argv++;
 
@@ -115,25 +135,19 @@ extern int sed_main (int argc, char **argv)
 	    perror (name);
 	    continue;
 	}
+	fprintf(stderr, "filename is '%s'\n", name);
 
-	line = 0;
-
+	haystack = (char*)malloc( 80);
 	while (fgets (haystack, sizeof (haystack), fp)) {
-	    line++;
-	    cp = &haystack[strlen (haystack) - 1];
-
-	    if (*cp != '\n')
-		fprintf (stderr, "%s: Line too long\n", name);
-
-	    if (find_match(haystack, needle, ignoreCase) == TRUE) {
-		if (tellName==TRUE)
-		    printf ("%s: ", name);
-
-		if (tellLine==TRUE)
-		    printf ("%ld: ", line);
 
+	    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);
 	}
 
 	if (ferror (fp))
diff --git a/init.c b/init.c
index d950e2b..b8cbbf6 100644
--- a/init.c
+++ b/init.c
@@ -41,8 +41,6 @@
 #include <sys/vt.h>		/* for vt_stat */
 #include <sys/ioctl.h>
 
-#define DEBUG_INIT
-
 #define CONSOLE         "/dev/console"	/* Logical system console */
 #define VT_PRIMARY      "/dev/tty0"	/* Virtual console master */
 #define VT_SECONDARY    "/dev/tty1"	/* Virtual console master */
@@ -272,7 +270,6 @@ static pid_t run(const char * const* command,
 }
 
 
-#ifndef DEBUG_INIT
 static void shutdown_system(void)
 {
     const char* const swap_off_cmd[] = { "/bin/swapoff", "-a", 0};
@@ -318,12 +315,9 @@ static void reboot_signal(int sig)
     exit(0);
 }
 
-#endif
-
 extern int init_main(int argc, char **argv)
 {
     int run_rc = TRUE;
-    pid_t pid = 0;
     pid_t pid1 = 0;
     pid_t pid2 = 0;
     struct stat statbuf;
@@ -333,13 +327,10 @@ extern int init_main(int argc, char **argv)
     const char* const* tty0_commands = init_commands;
     const char* const* tty1_commands = shell_commands;
     char *hello_msg_format =
-	"init(%d) started:  BusyBox v%s (%s) multi-call binary\r\n";
+	"init started:  BusyBox v%s (%s) multi-call binary\r\n";
     const char *no_memory =
 	"Sorry, your computer does not have enough memory.\r\n";
 
-    pid = getpid();
-
-#ifndef DEBUG_INIT
     /* Set up sig handlers */
     signal(SIGUSR1, halt_signal);
     signal(SIGSEGV, halt_signal);
@@ -353,7 +344,6 @@ extern int init_main(int argc, char **argv)
     /* Turn off rebooting via CTL-ALT-DEL -- we get a 
      * SIGINT on CAD so we can shut things down gracefully... */
     reboot(RB_DISABLE_CAD);
-#endif
     
     /* Figure out where the default console should be */
     console_init();
@@ -370,8 +360,8 @@ extern int init_main(int argc, char **argv)
 	putenv(PATH_DEFAULT);
 
     /* Hello world */
-    message(log, hello_msg_format, pid, BB_VER, BB_BT);
-    fprintf(stderr, hello_msg_format, pid, BB_VER, BB_BT);
+    message(log, hello_msg_format, BB_VER, BB_BT);
+    fprintf(stderr, hello_msg_format, BB_VER, BB_BT);
 
     
     /* Mount /proc */
@@ -385,7 +375,7 @@ extern int init_main(int argc, char **argv)
 
     /* Make sure there is enough memory to do something useful */
     set_free_pages();
-    if (mem_total() < 2000) {
+    if (mem_total() < 3500) {
 	int retval;
 	retval = stat("/etc/fstab", &statbuf);
 	if (retval) {
diff --git a/init/init.c b/init/init.c
index d950e2b..b8cbbf6 100644
--- a/init/init.c
+++ b/init/init.c
@@ -41,8 +41,6 @@
 #include <sys/vt.h>		/* for vt_stat */
 #include <sys/ioctl.h>
 
-#define DEBUG_INIT
-
 #define CONSOLE         "/dev/console"	/* Logical system console */
 #define VT_PRIMARY      "/dev/tty0"	/* Virtual console master */
 #define VT_SECONDARY    "/dev/tty1"	/* Virtual console master */
@@ -272,7 +270,6 @@ static pid_t run(const char * const* command,
 }
 
 
-#ifndef DEBUG_INIT
 static void shutdown_system(void)
 {
     const char* const swap_off_cmd[] = { "/bin/swapoff", "-a", 0};
@@ -318,12 +315,9 @@ static void reboot_signal(int sig)
     exit(0);
 }
 
-#endif
-
 extern int init_main(int argc, char **argv)
 {
     int run_rc = TRUE;
-    pid_t pid = 0;
     pid_t pid1 = 0;
     pid_t pid2 = 0;
     struct stat statbuf;
@@ -333,13 +327,10 @@ extern int init_main(int argc, char **argv)
     const char* const* tty0_commands = init_commands;
     const char* const* tty1_commands = shell_commands;
     char *hello_msg_format =
-	"init(%d) started:  BusyBox v%s (%s) multi-call binary\r\n";
+	"init started:  BusyBox v%s (%s) multi-call binary\r\n";
     const char *no_memory =
 	"Sorry, your computer does not have enough memory.\r\n";
 
-    pid = getpid();
-
-#ifndef DEBUG_INIT
     /* Set up sig handlers */
     signal(SIGUSR1, halt_signal);
     signal(SIGSEGV, halt_signal);
@@ -353,7 +344,6 @@ extern int init_main(int argc, char **argv)
     /* Turn off rebooting via CTL-ALT-DEL -- we get a 
      * SIGINT on CAD so we can shut things down gracefully... */
     reboot(RB_DISABLE_CAD);
-#endif
     
     /* Figure out where the default console should be */
     console_init();
@@ -370,8 +360,8 @@ extern int init_main(int argc, char **argv)
 	putenv(PATH_DEFAULT);
 
     /* Hello world */
-    message(log, hello_msg_format, pid, BB_VER, BB_BT);
-    fprintf(stderr, hello_msg_format, pid, BB_VER, BB_BT);
+    message(log, hello_msg_format, BB_VER, BB_BT);
+    fprintf(stderr, hello_msg_format, BB_VER, BB_BT);
 
     
     /* Mount /proc */
@@ -385,7 +375,7 @@ extern int init_main(int argc, char **argv)
 
     /* Make sure there is enough memory to do something useful */
     set_free_pages();
-    if (mem_total() < 2000) {
+    if (mem_total() < 3500) {
 	int retval;
 	retval = stat("/etc/fstab", &statbuf);
 	if (retval) {
diff --git a/internal.h b/internal.h
index 35f990a..81271be 100644
--- a/internal.h
+++ b/internal.h
@@ -102,6 +102,7 @@ extern int rm_main(int argc, char** argv);
 extern int scan_partitions_main(int argc, char** argv);
 extern int sh_main(int argc, char** argv);
 extern int sfdisk_main(int argc, char** argv);
+extern int sed_main(int argc, char** argv);
 extern int sleep_main(int argc, char** argv);
 extern int swap_on_off_main(int argc, char** argv);
 extern int sync_main(int argc, char** argv);
diff --git a/regexp.c b/regexp.c
index 6017d79..deee238 100644
--- a/regexp.c
+++ b/regexp.c
@@ -25,6 +25,28 @@ extern int find_match(char *haystack, char *needle, int ignoreCase)
     return( status);
 }
 
+/* This performs substitutions after a regexp match has been found.  
+ * The new string is returned.  It is malloc'ed, and do must be freed. */
+extern char* replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase)
+{
+    int status;
+    char* newHaystack;
+    struct regexp*  re;
+    newHaystack = (char *)malloc((unsigned)(strlen(haystack) -
+		strlen(needle) + strlen(newNeedle));
+    re = regcomp( needle);
+    status = regexec(re, haystack, FALSE, ignoreCase);
+
+    return( newHaystack)
+}
+
+
+extern void regsub(regexp* re, char* src, char* dst)
+
+    free( re);
+    return( status);
+}
+
 
 /* code swiped from elvis-tiny 1.4 (a clone of vi) and adjusted to 
  * suit the needs of busybox by Erik Andersen.
diff --git a/regexp.h b/regexp.h
index 1e324e1..e8880fb 100644
--- a/regexp.h
+++ b/regexp.h
@@ -43,6 +43,7 @@ extern int regexec(struct regexp* re, char* str, int bol, int ignoreCase);
 extern void regsub(struct regexp* re, char* src, char* dst);
 
 extern int find_match(char *haystack, char *needle, int ignoreCase);
+extern int replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase);
 
 #endif
 
diff --git a/sed.c b/sed.c
index 4dd552a..a3e635d 100644
--- a/sed.c
+++ b/sed.c
@@ -33,12 +33,10 @@
 
 static const char sed_usage[] = 
 "sed [-n] [-e script] [file...]\n"
-"Allowed scripts come in two forms:\n"
-"'/regexp/[gp]'\n"
-"\tattempt to match regexp against the pattern space\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."
+"\tand 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"
@@ -49,64 +47,86 @@ static const char sed_usage[] =
 #endif
 
 
-static int replaceFlag = FALSE;
-static int noprintFlag = FALSE;
 
 
 extern int sed_main (int argc, char **argv)
 {
     FILE *fp;
-    const char *needle;
-    const char *name;
-    const char *cp;
-    int tellName=TRUE;
+    char *needle=NULL, *newNeedle=NULL;
+    char *name;
+    char *cp;
     int ignoreCase=FALSE;
-    int tellLine=FALSE;
-    long line;
-    char haystack[BUF_SIZE];
-
-    ignoreCase = FALSE;
-    tellLine = FALSE;
+    int foundOne=FALSE;
+    int noprintFlag=FALSE;
+    int stopNow;
+    char *haystack;
 
     argc--;
     argv++;
     if (argc < 1) {
-	usage(grep_usage);
+	usage(sed_usage);
     }
 
     if (**argv == '-') {
 	argc--;
 	cp = *argv++;
+	stopNow=FALSE;
 
-	while (*++cp)
+	while (*++cp && stopNow==FALSE)
 	    switch (*cp) {
 	    case 'n':
 		noprintFlag = TRUE;
 		break;
 	    case 'e':
-		if (*(*argv)+1 != '\'' && **argv != '\"') {
-		    if (--argc == 0)
-			usage( mkdir_usage);
-		    ++argv;
-		    if (*(*argv)+1 != '\'' && **argv != '\"') {
-			usage( mkdir_usage);
+		if (*(cp+1)==0 && --argc < 0) {
+		    fprintf(stderr, "A\n");
+		    usage( sed_usage);
 		}
-		/* Find the specified modes */
-		mode = 0;
-		if ( parse_mode(*(++argv), &mode) == FALSE ) {
-		    fprintf(stderr, "Unknown mode: %s\n", *argv);
-		    exit( FALSE);
+		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) == '\\') {
+				pos++;
+				continue;
+			    }
+			    break;
+			}
+			*pos=0;
+			newNeedle=++pos;
+			for(;;) {
+			    pos = strchr(pos, '/');
+			    if (pos==NULL) {
+				fprintf(stderr, "C\n");
+				usage( sed_usage);
+			    }
+			    if (*(pos-1) == '\\') {
+				pos++;
+				continue;
+			    }
+			    break;
+			}
+			*pos=0;
+		    }
+		    cp++;
 		}
+		fprintf(stderr, "replace '%s' with '%s'\n", needle, newNeedle);
+		stopNow=TRUE;
 		break;
 
 	    default:
-		usage(grep_usage);
+		fprintf(stderr, "D\n");
+		usage(sed_usage);
 	    }
     }
 
-    needle = *argv++;
-    argc--;
-
+    fprintf(stderr, "argc=%d\n", argc);
     while (argc-- > 0) {
 	name = *argv++;
 
@@ -115,25 +135,19 @@ extern int sed_main (int argc, char **argv)
 	    perror (name);
 	    continue;
 	}
+	fprintf(stderr, "filename is '%s'\n", name);
 
-	line = 0;
-
+	haystack = (char*)malloc( 80);
 	while (fgets (haystack, sizeof (haystack), fp)) {
-	    line++;
-	    cp = &haystack[strlen (haystack) - 1];
-
-	    if (*cp != '\n')
-		fprintf (stderr, "%s: Line too long\n", name);
-
-	    if (find_match(haystack, needle, ignoreCase) == TRUE) {
-		if (tellName==TRUE)
-		    printf ("%s: ", name);
-
-		if (tellLine==TRUE)
-		    printf ("%ld: ", line);
 
+	    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);
 	}
 
 	if (ferror (fp))
diff --git a/utility.c b/utility.c
index 6491d83..41e7ccc 100644
--- a/utility.c
+++ b/utility.c
@@ -686,41 +686,6 @@ my_getgrgid(char* group, gid_t gid)
 
 
 
-#if !defined BB_REGEXP && (defined BB_GREP || defined BB_FIND )  
-/* This tries to find a needle in a haystack, but does so by
- * only trying to match literal strings (look 'ma, no regexps!)
- * This is short, sweet, and carries _very_ little baggage,
- * unlike its beefier cousin a few lines down...
- *  -Erik Andersen
- */
-extern int find_match(char *haystack, 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
-
-
 
 #if (defined BB_CHVT) || (defined BB_DEALLOCVT)
 
@@ -812,5 +777,71 @@ int get_console_fd(char* tty_name)
 #endif
 
 
+#if !defined BB_REGEXP && (defined BB_GREP || defined BB_FIND )  
+/* This tries to find a needle in a haystack, but does so by
+ * only trying to match literal strings (look 'ma, no regexps!)
+ * This is short, sweet, and carries _very_ little baggage,
+ * unlike its beefier cousin a few lines down...
+ *  -Erik Andersen
+ */
+extern int find_match(char *haystack, 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;
+    }
+}
+
+
+/* This performs substitutions after a regexp match has been found.  */
+extern int replace_match(char *haystack, char *needle, char *newNeedle, int ignoreCase)
+{
+    int foundOne;
+    char *where, *slider;
+
+    if (ignoreCase == FALSE) {
+	/*Find needle in haystack */
+	where = strstr (haystack, needle);
+	while(where!=NULL) {
+	    foundOne++;
+	    fprintf(stderr, "A match: haystack='%s'\n", haystack);
+	    haystack = (char *)realloc(haystack, (unsigned)(strlen(haystack) - 
+		strlen(needle) + strlen(newNeedle)));
+	    for(slider=haystack;slider!=where;slider++);
+	    *slider=0;
+	    haystack=strcat(haystack, newNeedle);
+	    slider+=1+sizeof(newNeedle);
+	    haystack = strcat(haystack, slider);
+	    where = strstr (where+1, needle);
+	}
+    } else {
+	// FIXME
+	
+    }
+    if (foundOne)
+	return TRUE;
+    else
+	return FALSE;
+}
+
+#endif
 /* END CODE */