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#include <u.h>
#include <libc.h>
#include "libString.h"
#undef isspace
#define isspace(c) ((c)==' ' || (c)=='\t' || (c)=='\n')
/* Get the next field from a String. The field is delimited by white space,
* single or double quotes.
*/
String *
s_parse(String *from, String *to)
{
if (*from->ptr == '\0')
return 0;
if (to == 0)
to = s_new();
if (*from->ptr == '\'') {
from->ptr++;
for (;*from->ptr != '\'' && *from->ptr != '\0'; from->ptr++)
s_putc(to, *from->ptr);
if (*from->ptr == '\'')
from->ptr++;
} else if (*from->ptr == '"') {
from->ptr++;
for (;*from->ptr != '"' && *from->ptr != '\0'; from->ptr++)
s_putc(to, *from->ptr);
if (*from->ptr == '"')
from->ptr++;
} else {
for (;!isspace(*from->ptr) && *from->ptr != '\0'; from->ptr++)
s_putc(to, *from->ptr);
}
s_terminate(to);
/* crunch trailing white */
while(isspace(*from->ptr))
from->ptr++;
return to;
}
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