X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=shell%2Fbbsh.c;h=897c0227cce785504a9dc6076eabab41d3356fad;hb=33f85eeac5a7babc996cacce4485326d46b6e54d;hp=57a103bf8871a53455cc70db6a40a254e9bf87fd;hpb=3476ad651dc023a35abe87a49478d806dee22f97;p=oweals%2Fbusybox.git

diff --git a/shell/bbsh.c b/shell/bbsh.c
index 57a103bf8..897c0227c 100644
--- a/shell/bbsh.c
+++ b/shell/bbsh.c
@@ -1,5 +1,5 @@
 /* vi: set ts=4 :
- * 
+ *
  * bbsh - busybox shell
  *
  * Copyright 2006 Rob Landley <rob@landley.net>
@@ -36,7 +36,7 @@
   echo `echo hello#comment " woot` and more
 */
 
-#include <busybox.h>
+#include "libbb.h"
 
 // A single executable, its arguments, and other information we know about it.
 #define BBSH_FLAG_EXIT    1
@@ -51,7 +51,7 @@
 // What we know about a single process.
 struct command {
 	struct command *next;
-	int flags;		// exit, suspend, && || 
+	int flags;		// exit, suspend, && ||
 	int pid;		// pid (or exit code)
 	int argc;
 	char *argv[0];
@@ -68,7 +68,7 @@ struct pipeline {
 
 static void free_list(void *list, void (*freeit)(void *data))
 {
-	while(list) {
+	while (list) {
 		void **next = (void **)list;
 		void *list_next = *next;
 		freeit(list);
@@ -90,7 +90,7 @@ static char *parse_word(char *start, struct command **cmd)
 
 	// Grab next word.  (Add dequote and envvar logic here)
 	end = start;
-	while (*end && !isspace(*end)) end++;
+	end = skip_non_whitespace(end);
 	(*cmd)->argv[(*cmd)->argc++] = xstrndup(start, end-start);
 
 	// Allocate more space if there's no room for NULL terminator.
@@ -105,29 +105,29 @@ static char *parse_word(char *start, struct command **cmd)
 // Parse a line of text into a pipeline.
 // Returns a pointer to the next line.
 
-static char *parse_pipeline(char *cmdline, struct pipeline *pipe)
+static char *parse_pipeline(char *cmdline, struct pipeline *line)
 {
-	struct command **cmd = &(pipe->cmd);
-	char *start = pipe->cmdline = cmdline;
+	struct command **cmd = &(line->cmd);
+	char *start = line->cmdline = cmdline;
 
 	if (!cmdline) return 0;
 
-	if (ENABLE_BBSH_JOBCTL) pipe->cmdline = cmdline;
+	if (ENABLE_BBSH_JOBCTL) line->cmdline = cmdline;
 
 	// Parse command into argv[]
 	for (;;) {
 		char *end;
 
 		// Skip leading whitespace and detect end of line.
-		while (isspace(*start)) start++;
+		start = skip_whitespace(start);
 		if (!*start || *start=='#') {
-			if (ENABLE_BBSH_JOBCTL) pipe->cmdlinelen = start-cmdline;
+			if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
 			return 0;
 		}
 
-		// Allocate next command structure if necessary		
+		// Allocate next command structure if necessary
 		if (!*cmd) *cmd = xzalloc(sizeof(struct command)+8*sizeof(char *));
-		
+
 		// Parse next argument and add the results to argv[]
 		end = parse_word(start, cmd);
 
@@ -138,37 +138,37 @@ static char *parse_pipeline(char *cmdline, struct pipeline *pipe)
 					start++;
 					break;
 				}
-				// handle | & < > >> << || && 
+				// handle | & < > >> << || &&
 			}
 			break;
 		}
 		start = end;
 	}
 
-	if (ENABLE_BBSH_JOBCTL) pipe->cmdlinelen = start-cmdline;
+	if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
 
 	return start;
 }
 
 // Execute the commands in a pipeline
-static int run_pipeline(struct pipeline *pipe)
+static int run_pipeline(struct pipeline *line)
 {
-	struct command *cmd = pipe->cmd;
+	struct command *cmd = line->cmd;
 	if (!cmd || !cmd->argc) return 0;
 
 	// Handle local commands.  This is totally fake and plastic.
 	if (cmd->argc==2 && !strcmp(cmd->argv[0],"cd"))
 		chdir(cmd->argv[1]);
-	else if(!strcmp(cmd->argv[0],"exit"))
-		exit(cmd->argc>1 ? atoi(cmd->argv[1]) : 0); 
+	else if (!strcmp(cmd->argv[0],"exit"))
+		exit(cmd->argc>1 ? atoi(cmd->argv[1]) : 0);
 	else {
 		int status;
 		pid_t pid=fork();
-		if(!pid) {
-			run_applet_by_name(cmd->argv[0],cmd->argc,cmd->argv);
+		if (!pid) {
+			run_applet_and_exit(cmd->argv[0],cmd->argc,cmd->argv);
 			execvp(cmd->argv[0],cmd->argv);
-			printf("No %s",cmd->argv[0]);
-			exit(1);
+			printf("No %s", cmd->argv[0]);
+			exit(EXIT_FAILURE);
 		} else waitpid(pid, &status, 0);
 	}
 
@@ -179,46 +179,45 @@ static void free_cmd(void *data)
 {
 	struct command *cmd=(struct command *)data;
 
-	while(cmd->argc) free(cmd->argv[--cmd->argc]);
+	while (cmd->argc) free(cmd->argv[--cmd->argc]);
 }
 
 
 static void handle(char *command)
 {
-	struct pipeline pipe;
+	struct pipeline line;
 	char *start = command;
 
 	for (;;) {
-		memset(&pipe,0,sizeof(struct pipeline));
-		start = parse_pipeline(start, &pipe);
-		if (!pipe.cmd) break;
+		memset(&line,0,sizeof(struct pipeline));
+		start = parse_pipeline(start, &line);
+		if (!line.cmd) break;
 
-		run_pipeline(&pipe);
-		free_list(pipe.cmd, free_cmd);
+		run_pipeline(&line);
+		free_list(line.cmd, free_cmd);
 	}
 }
 
-int bbsh_main(int argc, char *argv[])
+int bbsh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int bbsh_main(int argc, char **argv)
 {
 	char *command=NULL;
 	FILE *f;
 
-	bb_getopt_ulflags(argc, argv, "c:", &command);
+	getopt32(argv, "c:", &command);
 
-	f = argv[optind] ? xfopen(argv[optind],"r") : NULL;
+	f = argv[optind] ? xfopen_for_read(argv[optind]) : NULL;
 	if (command) handle(command);
 	else {
 		unsigned cmdlen=0;
 		for (;;) {
-			struct pipeline pipe;
-
-			if(!f) putchar('$');
-			if(1 > getline(&command, &cmdlen,f ? : stdin)) break;
+			if (!f) putchar('$');
+			if (1 > getline(&command, &cmdlen,f ? : stdin)) break;
 
 			handle(command);
 		}
 		if (ENABLE_FEATURE_CLEAN_UP) free(command);
 	}
-		
+
 	return 1;
 }