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/*
gather some functions common to multiple executables
detect_file_args
*/
#include <stdlib.h>
#include <stdio.h>
#include <strings.h>
#include "debug.h"
#include "alloc-inl.h"
/* Detect @@ in args. */
#ifndef __glibc__
# include <unistd.h>
#endif
void detect_file_args(char** argv, u8* prog_in) {
u32 i = 0;
#ifdef __GLIBC__
u8* cwd = getcwd(NULL, 0); /* non portable glibc extension */
#else
u8* cwd;
char* buf;
long size = pathconf(".", _PC_PATH_MAX);
if ((buf = (char*)malloc((size_t)size)) != NULL) {
cwd = getcwd(buf, (size_t)size); /* portable version */
} else {
PFATAL("getcwd() failed");
cwd = 0; /* for dumb compilers */
}
#endif
if (!cwd) PFATAL("getcwd() failed");
while (argv[i]) {
u8* aa_loc = strstr(argv[i], "@@");
if (aa_loc) {
u8 *aa_subst, *n_arg;
if (!prog_in) FATAL("@@ syntax is not supported by this tool.");
/* Be sure that we're always using fully-qualified paths. */
if (prog_in[0] == '/')
aa_subst = prog_in;
else
aa_subst = alloc_printf("%s/%s", cwd, prog_in);
/* Construct a replacement argv value. */
*aa_loc = 0;
n_arg = alloc_printf("%s%s%s", argv[i], aa_subst, aa_loc + 2);
argv[i] = n_arg;
*aa_loc = '@';
if (prog_in[0] != '/') ck_free(aa_subst);
}
i++;
}
free(cwd); /* not tracked */
}
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