int main(int argc, char *argv[])
{
char *result, *argp;
int errflg, absolute, canon, relative, nextArg;
#if _WIN32
_setmode(1, _O_BINARY);
#endif
errflg = 0;
canon = absolute = relative = 0;
for (nextArg = 1; nextArg < argc; nextArg++) {
argp = argv[nextArg];
if (*argp != '-') {
break;
}
if (strcmp(argp, "-a") == 0) {
absolute++;
} else if (strcmp(argp, "-c") == 0) {
canon++;
} else if (strcmp(argp, "-r") == 0) {
relative++;
} else {
errflg++;
}
}
if (!absolute && !relative && !canon) {
canon = 1;
}
if (errflg || (absolute + relative + canon) > 1) {
fprintf(stderr, "Usage: getpath [-arc] files...\n");
exit(2);
}
for (; nextArg < argc; ) {
if (relative) {
result = canonPath(relativePath(argv[nextArg]));
} else if (absolute) {
result = canonPath(absolutePath(argv[nextArg]));
} else {
result = canonPath(argv[nextArg]);
}
if (++nextArg < argc) {
printf("%s ", result);
} else {
printf("%s", result);
}
}
printf("\n");
return 0;
}
/*
* Return a relative path variation of path
*/
static char *relativePath(char *path)
{
char cwd[MAXPATH], **strSegments, **cwdSegments, *cp, *result;
size_t len;
int cwdCount, strCount, i, commonLevels, upLevels;
if (path == NULL || *path == '\0') {
return ".";
}
strSegments = getSegments(canonPath(absolutePath(path)), &strCount);
cwd[sizeof(cwd) - 1] = '\0';
if (getcwd(cwd, sizeof(cwd) - 1) == 0) {
fprintf(stderr, "Can't get working directory");
exit(255);
}
cwdSegments = getSegments(cwd, &cwdCount);
len = min(cwdCount, strCount);
for (i = 0; i < len; i++) {
if (strcmp(strSegments[i], cwdSegments[i]) != 0) {
break;
}
}
commonLevels = i;
upLevels = cwdCount - commonLevels;
len = (upLevels * 3);
for (; i < strCount; i++) {
len += strlen(strSegments[i]) + 1;
}
cp = result = malloc(len + 1);
for (i = 0; i < upLevels; i++) {
strcpy(cp, "../");
cp += 3;
}
for (i = commonLevels; i < strCount; i++) {
strcpy(cp, strSegments[i]);
cp += strlen(strSegments[i]);
if ((i + 1) < strCount) {
*cp++ = '/';
}
}
*cp = '\0';
return result;
}
static String canonicalPath(const String& path)
{
PlatformRefPtr<IFileMgr> fileMgr = createRefPtrInstance<IFileMgr>(AEECLSID_FILEMGR);
// Get the buffer size required to resolve the path.
int canonPathLen;
IFILEMGR_ResolvePath(fileMgr.get(), path.utf8().data(), 0, &canonPathLen);
// Resolve the path to the canonical path.
Vector<char> canonPathBuffer(canonPathLen);
IFILEMGR_ResolvePath(fileMgr.get(), path.utf8().data(), canonPathBuffer.data(), &canonPathLen);
String canonPath(canonPathBuffer.data());
// Remove the trailing '/'.
int lastDivPos = canonPath.reverseFind('/');
int endPos = canonPath.length();
if (lastDivPos == endPos - 1)
canonPath = canonPath.substring(0, canonPath.length() - 1);
return canonPath;
}
