| Methods Summary |
|---|
| private boolean | access(java.lang.String path)
try {
SecurityManager security = System.getSecurityManager();
if (security != null) security.checkRead(path);
return true;
} catch (SecurityException x) {
return false;
}
|
| public java.lang.String | canonicalize(java.lang.String path)
// If path is a drive letter only then skip canonicalization
int len = path.length();
if ((len == 2) &&
(isLetter(path.charAt(0))) &&
(path.charAt(1) == ':")) {
char c = path.charAt(0);
if ((c >= 'A") && (c <= 'Z"))
return path;
return "" + ((char) (c-32)) + ':";
} else if ((len == 3) &&
(isLetter(path.charAt(0))) &&
(path.charAt(1) == ':") &&
(path.charAt(2) == '\\")) {
char c = path.charAt(0);
if ((c >= 'A") && (c <= 'Z"))
return path;
return "" + ((char) (c-32)) + ':" + '\\";
}
if (!useCanonCaches) {
return canonicalize0(path);
} else {
String res = cache.get(path);
if (res == null) {
String dir = null;
String resDir = null;
if (useCanonPrefixCache) {
dir = parentOrNull(path);
if (dir != null) {
resDir = prefixCache.get(dir);
if (resDir != null) {
// Hit only in prefix cache; full path is canonical,
// but we need to get the canonical name of the file
// in this directory to get the appropriate capitalization
String filename = path.substring(1 + dir.length());
res = canonicalizeWithPrefix(resDir, filename);
cache.put(dir + File.separatorChar + filename, res);
}
}
}
if (res == null) {
res = canonicalize0(path);
cache.put(path, res);
if (useCanonPrefixCache && dir != null) {
resDir = parentOrNull(res);
if (resDir != null) {
File f = new File(res);
if (f.exists() && !f.isDirectory()) {
prefixCache.put(dir, resDir);
}
}
}
}
}
assert canonicalize0(path).equalsIgnoreCase(res);
return res;
}
|
| protected native java.lang.String | canonicalize0(java.lang.String path)
|
| protected java.lang.String | canonicalizeWithPrefix(java.lang.String canonicalPrefix, java.lang.String filename)
return canonicalizeWithPrefix0(canonicalPrefix,
canonicalPrefix + File.separatorChar + filename);
|
| protected native java.lang.String | canonicalizeWithPrefix0(java.lang.String canonicalPrefix, java.lang.String pathWithCanonicalPrefix)
|
| public native boolean | checkAccess(java.io.File f, boolean write)
|
| public int | compare(java.io.File f1, java.io.File f2)
return f1.getPath().compareToIgnoreCase(f2.getPath());
|
| public native boolean | createDirectory(java.io.File f)
|
| public native boolean | createFileExclusively(java.lang.String path)
|
| public boolean | delete(java.io.File f)
// Keep canonicalization caches in sync after file deletion
// and renaming operations. Could be more clever than this
// (i.e., only remove/update affected entries) but probably
// not worth it since these entries expire after 30 seconds
// anyway.
cache.clear();
prefixCache.clear();
return delete0(f);
|
| protected native boolean | delete0(java.io.File f)
|
| public native synchronized boolean | deleteOnExit(java.io.File f)
|
| private static int | driveIndex(char d)
if ((d >= 'a") && (d <= 'z")) return d - 'a";
if ((d >= 'A") && (d <= 'Z")) return d - 'A";
return -1;
|
| public java.lang.String | fromURIPath(java.lang.String path)
String p = path;
if ((p.length() > 2) && (p.charAt(2) == ':")) {
// "/c:/foo" --> "c:/foo"
p = p.substring(1);
// "c:/foo/" --> "c:/foo", but "c:/" --> "c:/"
if ((p.length() > 3) && p.endsWith("/"))
p = p.substring(0, p.length() - 1);
} else if ((p.length() > 1) && p.endsWith("/")) {
// "/foo/" --> "/foo"
p = p.substring(0, p.length() - 1);
}
return p;
|
| public native int | getBooleanAttributes(java.io.File f)
|
| public java.lang.String | getDefaultParent()
return ("" + slash);
|
| private java.lang.String | getDrive(java.lang.String path)
int pl = prefixLength(path);
return (pl == 3) ? path.substring(0, 2) : null;
|
| protected native java.lang.String | getDriveDirectory(int drive)
|
| private java.lang.String | getDriveDirectory(char drive)
int i = driveIndex(drive);
if (i < 0) return null;
String s = driveDirCache[i];
if (s != null) return s;
s = getDriveDirectory(i + 1);
driveDirCache[i] = s;
return s;
|
| public native long | getLastModifiedTime(java.io.File f)
|
| public native long | getLength(java.io.File f)
|
| public char | getPathSeparator()
return semicolon;
|
| public char | getSeparator()
return slash;
|
| private java.lang.String | getUserPath()
/* For both compatibility and security,
we must look this up every time */
return normalize(System.getProperty("user.dir"));
|
| public int | hashCode(java.io.File f)
/* Could make this more efficient: String.hashCodeIgnoreCase */
return f.getPath().toLowerCase().hashCode() ^ 1234321;
|
| private static native void | initIDs()
|
| public boolean | isAbsolute(java.io.File f)
int pl = f.getPrefixLength();
return (((pl == 2) && (f.getPath().charAt(0) == slash))
|| (pl == 3));
|
| private boolean | isLetter(char c)
return ((c >= 'a") && (c <= 'z")) || ((c >= 'A") && (c <= 'Z"));
|
| private boolean | isSlash(char c)
return (c == '\\") || (c == '/");
|
| public native java.lang.String[] | list(java.io.File f)
|
| public java.io.File[] | listRoots()
int ds = listRoots0();
int n = 0;
for (int i = 0; i < 26; i++) {
if (((ds >> i) & 1) != 0) {
if (!access((char)('A" + i) + ":" + slash))
ds &= ~(1 << i);
else
n++;
}
}
File[] fs = new File[n];
int j = 0;
char slash = this.slash;
for (int i = 0; i < 26; i++) {
if (((ds >> i) & 1) != 0)
fs[j++] = new File((char)('A" + i) + ":" + slash);
}
return fs;
|
| private static native int | listRoots0()
|
| private java.lang.String | normalize(java.lang.String path, int len, int off)
if (len == 0) return path;
if (off < 3) off = 0; /* Avoid fencepost cases with UNC pathnames */
int src;
char slash = this.slash;
StringBuffer sb = new StringBuffer(len);
if (off == 0) {
/* Complete normalization, including prefix */
src = normalizePrefix(path, len, sb);
} else {
/* Partial normalization */
src = off;
sb.append(path.substring(0, off));
}
/* Remove redundant slashes from the remainder of the path, forcing all
slashes into the preferred slash */
while (src < len) {
char c = path.charAt(src++);
if (isSlash(c)) {
while ((src < len) && isSlash(path.charAt(src))) src++;
if (src == len) {
/* Check for trailing separator */
int sn = sb.length();
if ((sn == 2) && (sb.charAt(1) == ':")) {
/* "z:\\" */
sb.append(slash);
break;
}
if (sn == 0) {
/* "\\" */
sb.append(slash);
break;
}
if ((sn == 1) && (isSlash(sb.charAt(0)))) {
/* "\\\\" is not collapsed to "\\" because "\\\\" marks
the beginning of a UNC pathname. Even though it is
not, by itself, a valid UNC pathname, we leave it as
is in order to be consistent with the win32 APIs,
which treat this case as an invalid UNC pathname
rather than as an alias for the root directory of
the current drive. */
sb.append(slash);
break;
}
/* Path does not denote a root directory, so do not append
trailing slash */
break;
} else {
sb.append(slash);
}
} else {
sb.append(c);
}
}
String rv = sb.toString();
return rv;
|
| public java.lang.String | normalize(java.lang.String path)
int n = path.length();
char slash = this.slash;
char altSlash = this.altSlash;
char prev = 0;
for (int i = 0; i < n; i++) {
char c = path.charAt(i);
if (c == altSlash)
return normalize(path, n, (prev == slash) ? i - 1 : i);
if ((c == slash) && (prev == slash) && (i > 1))
return normalize(path, n, i - 1);
if ((c == ':") && (i > 1))
return normalize(path, n, 0);
prev = c;
}
if (prev == slash) return normalize(path, n, n - 1);
return path;
|
| private int | normalizePrefix(java.lang.String path, int len, java.lang.StringBuffer sb)
int src = 0;
while ((src < len) && isSlash(path.charAt(src))) src++;
char c;
if ((len - src >= 2)
&& isLetter(c = path.charAt(src))
&& path.charAt(src + 1) == ':") {
/* Remove leading slashes if followed by drive specifier.
This hack is necessary to support file URLs containing drive
specifiers (e.g., "file://c:/path"). As a side effect,
"/c:/path" can be used as an alternative to "c:/path". */
sb.append(c);
sb.append(':");
src += 2;
} else {
src = 0;
if ((len >= 2)
&& isSlash(path.charAt(0))
&& isSlash(path.charAt(1))) {
/* UNC pathname: Retain first slash; leave src pointed at
second slash so that further slashes will be collapsed
into the second slash. The result will be a pathname
beginning with "\\\\" followed (most likely) by a host
name. */
src = 1;
sb.append(slash);
}
}
return src;
|
| static java.lang.String | parentOrNull(java.lang.String path)
if (path == null) return null;
char sep = File.separatorChar;
char altSep = '/";
int last = path.length() - 1;
int idx = last;
int adjacentDots = 0;
int nonDotCount = 0;
while (idx > 0) {
char c = path.charAt(idx);
if (c == '.") {
if (++adjacentDots >= 2) {
// Punt on pathnames containing . and ..
return null;
}
if (nonDotCount == 0) {
// Punt on pathnames ending in a .
return null;
}
} else if (c == sep) {
if (adjacentDots == 1 && nonDotCount == 0) {
// Punt on pathnames containing . and ..
return null;
}
if (idx == 0 ||
idx >= last - 1 ||
path.charAt(idx - 1) == sep ||
path.charAt(idx - 1) == altSep) {
// Punt on pathnames containing adjacent slashes
// toward the end
return null;
}
return path.substring(0, idx);
} else if (c == altSep) {
// Punt on pathnames containing both backward and
// forward slashes
return null;
} else if (c == '*" || c == '?") {
// Punt on pathnames containing wildcards
return null;
} else {
++nonDotCount;
adjacentDots = 0;
}
--idx;
}
return null;
|
| public int | prefixLength(java.lang.String path)
char slash = this.slash;
int n = path.length();
if (n == 0) return 0;
char c0 = path.charAt(0);
char c1 = (n > 1) ? path.charAt(1) : 0;
if (c0 == slash) {
if (c1 == slash) return 2; /* Absolute UNC pathname "\\\\foo" */
return 1; /* Drive-relative "\\foo" */
}
if (isLetter(c0) && (c1 == ':")) {
if ((n > 2) && (path.charAt(2) == slash))
return 3; /* Absolute local pathname "z:\\foo" */
return 2; /* Directory-relative "z:foo" */
}
return 0; /* Completely relative */
|
| public boolean | rename(java.io.File f1, java.io.File f2)
// Keep canonicalization caches in sync after file deletion
// and renaming operations. Could be more clever than this
// (i.e., only remove/update affected entries) but probably
// not worth it since these entries expire after 30 seconds
// anyway.
cache.clear();
prefixCache.clear();
return rename0(f1, f2);
|
| protected native boolean | rename0(java.io.File f1, java.io.File f2)
|
| public java.lang.String | resolve(java.lang.String parent, java.lang.String child)
int pn = parent.length();
if (pn == 0) return child;
int cn = child.length();
if (cn == 0) return parent;
String c = child;
int childStart = 0;
int parentEnd = pn;
if ((cn > 1) && (c.charAt(0) == slash)) {
if (c.charAt(1) == slash) {
/* Drop prefix when child is a UNC pathname */
childStart = 2;
} else {
/* Drop prefix when child is drive-relative */
childStart = 1;
}
if (cn == childStart) { // Child is double slash
if (parent.charAt(pn - 1) == slash)
return parent.substring(0, pn - 1);
return parent;
}
}
if (parent.charAt(pn - 1) == slash)
parentEnd--;
int strlen = parentEnd + cn - childStart;
char[] theChars = null;
if (child.charAt(childStart) == slash) {
theChars = new char[strlen];
parent.getChars(0, parentEnd, theChars, 0);
child.getChars(childStart, cn, theChars, parentEnd);
} else {
theChars = new char[strlen + 1];
parent.getChars(0, parentEnd, theChars, 0);
theChars[parentEnd] = slash;
child.getChars(childStart, cn, theChars, parentEnd + 1);
}
return new String(theChars);
|
| public java.lang.String | resolve(java.io.File f)
String path = f.getPath();
int pl = f.getPrefixLength();
if ((pl == 2) && (path.charAt(0) == slash))
return path; /* UNC */
if (pl == 3)
return path; /* Absolute local */
if (pl == 0)
return getUserPath() + slashify(path); /* Completely relative */
if (pl == 1) { /* Drive-relative */
String up = getUserPath();
String ud = getDrive(up);
if (ud != null) return ud + path;
return up + path; /* User dir is a UNC path */
}
if (pl == 2) { /* Directory-relative */
String up = getUserPath();
String ud = getDrive(up);
if ((ud != null) && path.startsWith(ud))
return up + slashify(path.substring(2));
char drive = path.charAt(0);
String dir = getDriveDirectory(drive);
String np;
if (dir != null) {
/* When resolving a directory-relative path that refers to a
drive other than the current drive, insist that the caller
have read permission on the result */
String p = drive + (':" + dir + slashify(path.substring(2)));
SecurityManager security = System.getSecurityManager();
try {
if (security != null) security.checkRead(p);
} catch (SecurityException x) {
/* Don't disclose the drive's directory in the exception */
throw new SecurityException("Cannot resolve path " + path);
}
return p;
}
return drive + ":" + slashify(path.substring(2)); /* fake it */
}
throw new InternalError("Unresolvable path: " + path);
|
| public native boolean | setLastModifiedTime(java.io.File f, long time)
|
| public native boolean | setReadOnly(java.io.File f)
|
| private java.lang.String | slashify(java.lang.String p)
if ((p.length() > 0) && (p.charAt(0) != slash)) return slash + p;
else return p;
|
