* Write a shell-quoted version of a string into a buffer, and
* return bytes that ought to be output excluding final null.
*/
static int shell_quote(char *buf, int nmax, const char *str)
{
char ch;
int nq;
int oc = 0;
while ( (ch = *str++) ) {
nq = 0;
if ( strchr(" !\"#$%&\'()*;<=>?[\\]^`{|}", ch) )
nq = 1;
if ( nq ) {
if ( nmax > 1 ) {
*buf++ = '\\';
nmax--;
}
oc++;
}
if ( nmax > 1 ) {
*buf++ = ch;
nmax--;
}
oc++;
}
if ( nmax )
*buf = '\0';
return oc;
}
/*
* Append a string to a string buffer, with or without quoting. Return true
* if the buffer overflowed.
* Append a string to a string buffer, with or without shell quoting.
* Return true if the buffer overflowed.
*/
static int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
{
@ -56,7 +20,7 @@ static int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
@@ -56,7 +20,7 @@ static int add_to_string(char **ptrp, int *sizep, const char *str, int quote)