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/* vi: set ts=4 :
*
* bbsh - busybox shell
*
* Copyright 2006 Rob Landley <rob@landley.net>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
// Handle embedded NUL bytes in the command line.
#include <busybox.h>
static int handle(char *command)
{
int argc=0;
char *argv[10], *start = command;
// Parse command into argv[]
for (;;) {
char *end;
// Skip leading whitespace and detect EOL.
while(isspace(*start)) start++;
if(!*start || *start=='#') break;
// Grab next word. (Add dequote and envvar logic here)
end=start;
while(*end && !isspace(*end)) end++;
argv[argc++]=xstrndup(start,end-start);
start=end;
}
argv[argc]=0;
if (!argc) return 0;
if (argc==2 && !strcmp(argv[0],"cd")) chdir(argv[1]);
else if(!strcmp(argv[0],"exit")) exit(argc>1 ? atoi(argv[1]) : 0);
else {
int status;
pid_t pid=fork();
if(!pid) {
run_applet_by_name(argv[0],argc,argv);
execvp(argv[0],argv);
printf("No %s",argv[0]);
exit(1);
} else waitpid(pid, &status, 0);
}
while(argc) free(argv[--argc]);
return 0;
}
int bbsh_main(int argc, char *argv[])
{
char *command=NULL;
FILE *f;
bb_getopt_ulflags(argc, argv, "c:", &command);
f = argv[optind] ? xfopen(argv[optind],"r") : NULL;
if (command) handle(command);
else {
unsigned cmdlen=0;
for (;;) {
if(!f) putchar('$');
if(1 > getline(&command,&cmdlen,f ? : stdin)) break;
handle(command);
}
if (ENABLE_FEATURE_CLEAN_UP) free(command);
}
return 1;
}
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