# Write out the perl5i wrapper C program making sure it uses
# the Perl its built with.
use strict;
use warnings;
use File::Spec;
my $file = shift;
# Its going inside double quotes.
my $perl_path = $^X;
$perl_path =~ s{ ([\\"]) }{\\$1}gx;
my $tempdir = File::Spec->tmpdir || "/tmp";
open my $fh, ">", $file or die $!;
printf $fh <<'END', $0, $perl_path, $tempdir;
/* THIS FILE IS GENERATED BY %s
* Any changes here will be wiped out. Edit it there instead.
*/
#define DEBUG 0
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
/*
* Meant to mimic the shell command
* exec perl -Mperl5i::latest "$@"
*
* This is a C program so it works in a #! line.
*/
int main (int argc, char* argv[]) {
int i;
int j;
const char* perl_cmd = "%s";
char* perl_args[argc+1];
char* dash_m = (char *)malloc(sizeof(char) * (strlen(argv[0]) + 20));
char* program;
int saw_dash_e = 0;
strcat(dash_m, "-Mperl5i::cmd=");
strcat(dash_m, argv[0]);
perl_args[0] = (char *)perl_cmd;
perl_args[1] = dash_m;
for( i = 1, j = 2; i < argc; i++ ) {
char *dash_e = strchr(argv[i], 'e');
/* Its a one liner */
if( dash_e && strcmp(dash_e, "e") == 0
&& (strchr(argv[i], '-') == argv[i])
&& (strchr(argv[i], 'M') != argv[i]+1)
)
{
saw_dash_e = 1;
/* Chop out the -e */
dash_e[0] = '\0';
/* If all that's left is a dash, ignore it */
if( strcmp(argv[i], "-") != 0 ) {
perl_args[j] = argv[i];
j++;
}
/* Skip the next argument, its the program */
program = argv[i+1];
i++;
continue;
}
perl_args[j] = argv[i];
j++;
}
/* Turn one liners into real programs to work around
a Devel::Declare bug */
if( saw_dash_e ) {
char tempfile[] = "%s/perl5i.XXXXXX";
int fd = mkstemp(tempfile);
if( fd == -1 ) {
perror("Could not open temporary file 'tempfile'");
exit(1);
}
FILE *fh = fdopen(fd, "w");
fprintf( fh, "$0 = '-e';\n" );
fprintf( fh, "#line 1 \"-e\"\n" );
fprintf( fh, "%%s", program );
fclose(fh);
perl_args[j++] = tempfile;
}
/* Argument array must be terminated by a null */
perl_args[j] = (char *)NULL;
#if DEBUG
for( i = 0; i <= j; i++ ) {
printf("perl_args[%%d]: %%s\n", i, perl_args[i]);
}
if( saw_dash_e )
printf("program: %%s\n", program);
#endif
return execv( perl_cmd, perl_args );
}
END