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Make get_executable_path more portable and correct.

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@4592 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
pabs3 2006-03-15 06:51:31 +00:00
parent 70f42f9901
commit 7b789fbeb6
1 changed files with 36 additions and 4 deletions
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40
Source/util.cpp
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@ -644,13 +644,45 @@ string get_file_name(const string& path) {
string get_executable_path(const char* argv0) {
#ifdef _WIN32
char temp_buf[1024];
char temp_buf[MAX_PATH+1];
temp_buf[0] = '\0';
int rc = GetModuleFileName(NULL,temp_buf,1024);
int rc = GetModuleFileName(NULL,temp_buf,MAX_PATH);
assert(rc != 0);
return string(temp_buf);
#else
return get_full_path(argv0);
#elif __APPLE__
char temp_buf[MAXPATHLEN+1];
unsigned long buf_len = MAXPATHLEN;
int rc = _NSGetExecutablePath(temp_buf, &buf_len);
assert(rc == 0);
return string(temp_buf);
#else /* Linux/BSD/POSIX/etc */
const char *path = getenv("_");
if( path != NULL ) return get_full_path( path );
else {
char* pathtmp;
size_t len = 100;
int nchars;
while(1){
pathtmp = (char*)realloc(path,len+1);
if( pathtmp == NULL ){
free(path);
return get_full_path(argv0);
}
path = pathtmp;
nchars = readlink("/proc/self/exe", path, len);
if( nchars < 0 ){
free(path);
return get_full_path(argv0);
}
if( nchars < len ){
path[nchars] = '\0';
string result(path);
free(path);
return result;
}
len *= 2;
}
}
#endif
}