femtolisp/llt/dirpath.c

116 lines
2.1 KiB
C

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "dtypes.h"
#ifdef WIN32
#include <malloc.h>
#include <sys/timeb.h>
#include <windows.h>
#undef NO_ERROR
#undef MOD_SHIFT
#undef TRUE
#undef FALSE
#undef VOID
#else
#include <sys/time.h>
#include <sys/poll.h>
#include <unistd.h>
#endif
#include "dirpath.h"
void get_cwd(char *buf, size_t size)
{
#ifndef WIN32
getcwd(buf, size);
#else
GetCurrentDirectory(size, buf);
#endif
}
int set_cwd(char *buf)
{
#ifndef WIN32
if (chdir(buf) == -1)
return 1;
#else
if (SetCurrentDirectory(buf) == 0)
return 1;
#endif
return 0;
}
// destructively convert path to directory part
void path_to_dirname(char *path)
{
char *sep = strrchr(path, PATHSEP);
if (sep != NULL) {
*sep = '\0';
}
else {
path[0] = '\0';
}
}
#ifdef LINUX
char *get_exename(char *buf, size_t size)
{
char linkname[64]; /* /proc/<pid>/exe */
pid_t pid;
ssize_t ret;
/* Get our PID and build the name of the link in /proc */
pid = getpid();
if (snprintf(linkname, sizeof(linkname), "/proc/%i/exe", pid) < 0)
return NULL;
/* Now read the symbolic link */
ret = readlink(linkname, buf, size);
/* In case of an error, leave the handling up to the caller */
if (ret == -1)
return NULL;
/* Report insufficient buffer size */
if ((size_t)ret >= size)
return NULL;
/* Ensure proper NUL termination */
buf[ret] = 0;
return buf;
}
#elif defined(WIN32)
char *get_exename(char *buf, size_t size)
{
if (GetModuleFileName(NULL, buf, size) == 0)
return NULL;
return buf;
}
#elif defined(MACOSX)
#include "/Developer/Headers/FlatCarbon/Processes.h"
#include "/Developer/Headers/FlatCarbon/Files.h"
char *get_exename(char *buf, size_t size)
{
ProcessSerialNumber PSN;
FSRef ref;
if (GetCurrentProcess(&PSN) < 0 ||
GetProcessBundleLocation(&PSN, &ref) < 0 ||
FSRefMakePath(&ref, buf, size) < 0)
return NULL;
return buf;
}
#endif