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authorEric Andersen <andersen@codepoet.org>2001-03-17 00:20:10 +0000
committerEric Andersen <andersen@codepoet.org>2001-03-17 00:20:10 +0000
commit341744781a3090774fe9dc8ef788a16e6c793c7b (patch)
tree765409c7b9158086e46ff854d11b8caad2137fad /shell
parent1a6f8cfadf9416a9a74a03468fd4c201e532184b (diff)
downloadbusybox-341744781a3090774fe9dc8ef788a16e6c793c7b.tar.gz
Patch from Larry and Vladimir to clean up sh.c and fix
shell expansion to work in non POSIX locales.
Diffstat (limited to 'shell')
-rw-r--r--shell/lash.c30
1 files changed, 12 insertions, 18 deletions
diff --git a/shell/lash.c b/shell/lash.c
index 6fedfe8dd..8727e12ae 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -65,9 +65,9 @@
#include <unistd.h>
#include <getopt.h>
-#undef BB_FEATURE_SH_WORDEXP
+//#define BB_FEATURE_SH_WORDEXP
-#if BB_FEATURE_SH_WORDEXP
+#ifdef BB_FEATURE_SH_WORDEXP
#include <wordexp.h>
#define expand_t wordexp_t
#undef BB_FEATURE_SH_BACKTICKS
@@ -881,9 +881,6 @@ static int get_command(FILE * source, char *command)
return 1;
}
- /* remove trailing newline */
- chomp(command);
-
return 0;
}
@@ -962,8 +959,8 @@ static int expand_arguments(char *command)
while( command && command[index]) {
if (command[index] == '\\') {
char *tmp = command+index+1;
- command[index+1] = process_escape_sequence( &tmp );
- memmove(command+index, command+index+1, strlen(command+index));
+ command[index] = process_escape_sequence( &tmp );
+ memmove(command+index + 1, tmp, strlen(tmp)+1);
}
index++;
}
@@ -971,7 +968,7 @@ static int expand_arguments(char *command)
#ifdef BB_FEATURE_SH_ENVIRONMENT
-#if BB_FEATURE_SH_WORDEXP
+#ifdef BB_FEATURE_SH_WORDEXP
/* This first part uses wordexp() which is a wonderful C lib
* function which expands nearly everything. */
retval = wordexp (command, &expand_result, WRDE_SHOWERR);
@@ -1116,25 +1113,24 @@ static int expand_arguments(char *command)
} else {
/* Looks like an environment variable */
char delim_hold;
- int num_skip_chars=1;
+ int num_skip_chars=0;
int dstlen = strlen(dst);
/* Is this a ${foo} type variable? */
if (dstlen >=2 && *(dst+1) == '{') {
src=strchr(dst+1, '}');
- num_skip_chars=2;
+ num_skip_chars=1;
} else {
- src=strpbrk(dst+1, " \t~`!$^&*()=|\\[];\"'<>?./");
+ src=dst+1;
+ while(isalnum(*src) || *src=='_') src++;
}
if (src == NULL) {
src = dst+dstlen;
}
delim_hold=*src;
*src='\0'; /* temporary */
- var = getenv(dst + num_skip_chars);
+ var = getenv(dst + 1 + num_skip_chars);
*src=delim_hold;
- if (num_skip_chars==2) {
- src++;
- }
+ src += num_skip_chars;
}
if (var == NULL) {
/* Seems we got an un-expandable variable. So delete it. */
@@ -1149,8 +1145,7 @@ static int expand_arguments(char *command)
}
/* Move stuff to the end of the string to accommodate
* filling the created gap with the new stuff */
- memmove(dst+subst_len, src, trail_len);
- *(dst+subst_len+trail_len)='\0';
+ memmove(dst+subst_len, src, trail_len+1);
/* Now copy in the new stuff */
memcpy(dst, var, subst_len);
src = dst+subst_len;
@@ -1475,7 +1470,6 @@ static int parse_command(char **command_ptr, struct job *job, int *inbg)
break;
#else
error_msg("character expected after \\");
- free(command);
free_job(job);
return 1;
#endif