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/* ISC license. */
#include <skalibs/sgetopt.h>
#include <skalibs/bytestr.h>
#include <skalibs/uint.h>
#include <skalibs/strerr2.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/skamisc.h>
#define USAGE "s6-unquote [ -n ] [ -d delim ] string"
int main (int argc, char const *const *argv)
{
char const *delim = "\"" ;
unsigned int len, delimlen ;
int nl = 1 ;
char const *string ;
PROG = "s6-unquote" ;
{
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
register int opt = subgetopt_r(argc, argv, "nd:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'n' : nl = 0 ; break ;
case 'd': delim = l.arg ; break ;
default : strerr_dieusage(100, USAGE) ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (!argc) strerr_dieusage(100, USAGE) ;
string = *argv ;
len = str_len(string) ;
delimlen = str_len(delim) ;
if (delimlen)
{
if (!len--) strerr_dief1x(100, "the empty string isn't a quoted string") ;
if (byte_chr(delim, delimlen, *string++) >= delimlen)
strerr_dief1x(100, "invalid starting quote character") ;
}
{
unsigned int r = 0, w = 0 ;
char buf[len+1] ;
if (!string_unquote_withdelim(buf, &w, string, len, &r, delim, delimlen))
{
char fmt[UINT_FMT] ;
fmt[uint_fmt(fmt, r + !!delimlen)] = 0 ;
strerr_diefu2sys(100, "unquote at character ", fmt) ;
}
if (delimlen)
{
if (r == len) strerr_dief1x(100, "no ending quote character") ;
else if (r < len - 1)
{
char fmtnum[UINT_FMT] ;
char fmtden[UINT_FMT] ;
fmtnum[uint_fmt(fmtnum, r+1)] = 0 ;
fmtden[uint_fmt(fmtden, len)] = 0 ;
strerr_warnw5x("found ending quote character at position ", fmtnum, "/", fmtden, "; ignoring remainder") ;
}
}
if (nl) buf[w++] = '\n' ;
if (allwrite(1, buf, w) < w)
strerr_diefu1sys(111, "write to stdout") ;
}
return 0 ;
}
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