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Apply some patches from Gennady Feldman <gfeldman@mail.com> to

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. /etc/profile, and to emulate bash prompt.  I've cleaned up
his patches a bit and all looks good now...
This commit is contained in:
Eric Andersen
2000-11-30 22:43:16 +00:00
parent cabafae7b0
commit b558e76eb1
3 changed files with 195 additions and 117 deletions
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104
lash.c
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@@ -45,9 +45,7 @@
#include <sys/wait.h>
#include <unistd.h>
#include <getopt.h>
#ifdef BB_FEATURE_SH_COMMAND_EDITING
#include "cmdedit.h"
#endif
#define MAX_LINE 256 /* size of input buffer for `read' builtin */
#define MAX_READ 128 /* size of input buffer for `read' builtin */
@@ -55,6 +53,8 @@
extern size_t NUM_APPLETS;
enum redirectionType { REDIRECT_INPUT, REDIRECT_OVERWRITE,
REDIRECT_APPEND
};
@@ -167,7 +167,7 @@ static struct builtInCommand bltins_forking[] = {
{NULL, NULL, NULL}
};
static char *prompt = "# ";
static char prompt[3];
static char *cwd;
static char *local_pending_command = NULL;
static char *promptStr = NULL;
@@ -180,9 +180,20 @@ static int lastReturnCode=-1;
static int showXtrace=FALSE;
#endif
#ifdef DEBUG_SHELL
static inline void debug_printf(const char *format, ...)
{
va_list args;
va_start(args, format);
vfprintf(stderr, s, p);
va_end(args);
}
#else
static inline void debug_printf(const char *format, ...) { }
#endif
#ifdef BB_FEATURE_SH_COMMAND_EDITING
void win_changed(int junk)
static inline void win_changed(int junk)
{
struct winsize win = { 0, 0, 0, 0 };
ioctl(0, TIOCGWINSZ, &win);
@@ -190,6 +201,8 @@ void win_changed(int junk)
cmdedit_setwidth( win.ws_col - 1);
}
}
#else
static inline void win_changed(int junk) {}
#endif
@@ -402,22 +415,14 @@ static int builtin_if(struct job *cmd, struct jobSet *jobList)
local_pending_command = xmalloc(status+1);
strncpy(local_pending_command, charptr1, status);
local_pending_command[status]='\0';
#ifdef DEBUG_SHELL
fprintf(stderr, "'if' now testing '%s'\n", local_pending_command);
#endif
debug_printf(stderr, "'if' now testing '%s'\n", local_pending_command);
status = busy_loop(NULL); /* Frees local_pending_command */
#ifdef DEBUG_SHELL
fprintf(stderr, "if test returned ");
#endif
debug_printf(stderr, "if test returned ");
if (status == 0) {
#ifdef DEBUG_SHELL
fprintf(stderr, "TRUE\n");
#endif
debug_printf(stderr, "TRUE\n");
cmd->jobContext |= IF_TRUE_CONTEXT;
} else {
#ifdef DEBUG_SHELL
fprintf(stderr, "FALSE\n");
#endif
debug_printf(stderr, "FALSE\n");
cmd->jobContext |= IF_FALSE_CONTEXT;
}
@@ -447,9 +452,7 @@ static int builtin_then(struct job *cmd, struct jobSet *junk)
local_pending_command = xmalloc(status+1);
strncpy(local_pending_command, charptr1, status);
local_pending_command[status]='\0';
#ifdef DEBUG_SHELL
fprintf(stderr, "'then' now running '%s'\n", charptr1);
#endif
debug_printf(stderr, "'then' now running '%s'\n", charptr1);
return( busy_loop(NULL));
}
@@ -476,9 +479,7 @@ static int builtin_else(struct job *cmd, struct jobSet *junk)
local_pending_command = xmalloc(status+1);
strncpy(local_pending_command, charptr1, status);
local_pending_command[status]='\0';
#ifdef DEBUG_SHELL
fprintf(stderr, "'else' now running '%s'\n", charptr1);
#endif
debug_printf(stderr, "'else' now running '%s'\n", charptr1);
return( busy_loop(NULL));
}
@@ -491,9 +492,7 @@ static int builtin_fi(struct job *cmd, struct jobSet *junk)
}
/* Clear out the if and then context bits */
cmd->jobContext &= ~(IF_TRUE_CONTEXT|IF_FALSE_CONTEXT|THEN_EXP_CONTEXT|ELSE_EXP_CONTEXT);
#ifdef DEBUG_SHELL
fprintf(stderr, "Hit an fi -- jobContext=%d\n", cmd->jobContext);
#endif
debug_printf(stderr, "Hit an fi -- jobContext=%d\n", cmd->jobContext);
return TRUE;
}
#endif
@@ -656,6 +655,8 @@ static int setupRedirections(struct childProgram *prog)
static int getCommand(FILE * source, char *command)
{
char *user,buf[255],*s;
if (source == NULL) {
if (local_pending_command) {
/* a command specified (-c option): return it & mark it done */
@@ -667,6 +668,17 @@ static int getCommand(FILE * source, char *command)
return 1;
}
/* get User Name and setup prompt */
strcpy(prompt,( geteuid() != 0 ) ? "$ ":"# ");
user=xcalloc(sizeof(int), 9);
my_getpwuid(user, geteuid());
/* get HostName */
gethostname(buf, 255);
s = strchr(buf, '.');
if (s)
*s = 0;
if (source == stdin) {
#ifdef BB_FEATURE_SH_COMMAND_EDITING
int len;
@@ -679,21 +691,33 @@ static int getCommand(FILE * source, char *command)
*/
cmdedit_init();
signal(SIGWINCH, win_changed);
len=fprintf(stdout, "%s %s", cwd, prompt);
len=fprintf(stdout, "[%s@%s %s]%s", user, buf,
get_last_path_component(cwd), prompt);
fflush(stdout);
promptStr=(char*)xmalloc(sizeof(char)*(len+1));
sprintf(promptStr, "%s %s", cwd, prompt);
sprintf(promptStr, "[%s@%s %s]%s", user, buf,
get_last_path_component(cwd), prompt);
cmdedit_read_input(promptStr, command);
free( promptStr);
cmdedit_terminate();
signal(SIGWINCH, SIG_DFL);
return 0;
#else
fprintf(stdout, "%s %s", cwd, prompt);
i=strlen(cwd);
i--;
if (i>1){
while ((i>0) && (*(cwd+i)!='/') ) i--;
if (*(cwd+i)=='/') i++;
}
fprintf(stdout, "[%s@%s %s]%s",user, buf, (cwd+i), prompt);
fflush(stdout);
#endif
}
/* don't leak memory */
free(user);
if (!fgets(command, BUFSIZ - 2, source)) {
if (source == stdin)
printf("\n");
@@ -707,10 +731,9 @@ static int getCommand(FILE * source, char *command)
}
#ifdef BB_FEATURE_SH_ENVIRONMENT
#define __MAX_INT_CHARS 7
static char* itoa(register int i)
{
static char a[__MAX_INT_CHARS];
static char a[7]; /* Max 7 ints */
register char *b = a + sizeof(a) - 1;
int sign = (i < 0);
@@ -1381,9 +1404,7 @@ static int busy_loop(FILE * input)
#ifdef BB_FEATURE_SH_ENVIRONMENT
lastReturnCode=WEXITSTATUS(status);
#endif
#if 0
printf("'%s' exited -- return code %d\n", jobList.fg->text, lastReturnCode);
#endif
debug_printf("'%s' exited -- return code %d\n", jobList.fg->text, lastReturnCode);
if (!jobList.fg->runningProgs) {
/* child exited */
@@ -1449,9 +1470,17 @@ int shell_main(int argc_l, char **argv_l)
argv = argv_l;
//if (argv[0] && argv[0][0] == '-') {
// builtin_source("/etc/profile");
//}
if (argv[0] && argv[0][0] == '-') {
FILE *input;
input = fopen("/etc/profile", "r");
if (!input) {
fprintf(stdout, "Couldn't open file '/etc/profile'\n");
} else {
/* Now run the file */
busy_loop(input);
fclose(input);
}
}
while ((opt = getopt(argc_l, argv_l, "cx")) > 0) {
switch (opt) {
@@ -1500,9 +1529,6 @@ int shell_main(int argc_l, char **argv_l)
atexit(free_memory);
#endif
#ifdef BB_FEATURE_SH_COMMAND_EDITING
win_changed(0);
#endif
return (busy_loop(input));
}