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processing/core/src/processing/data/StringList.java at master · augmentaudio/processing · GitHub
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/
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data
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StringList.java
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package
processing
.
data
;
import
java
.
util
.
Arrays
;
import
java
.
util
.
Iterator
;
import
java
.
util
.
Random
;
import
processing
.
core
.
PApplet
;
/**
* Helper class for a list of Strings. Lists are designed to have some of the
* features of ArrayLists, but to maintain the simplicity and efficiency of
* working with arrays.
*
* Functions like sort() and shuffle() always act on the list itself. To get
* a sorted copy, use list.copy().sort().
*
* @webref data:composite
* @see IntList
* @see FloatList
*/
public
class
StringList
implements
Iterable
<
String
> {
int
count
;
String
[]
data
;
public
StringList
() {
this
(
10
);
}
/**
* @nowebref
*/
public
StringList
(
int
length
) {
data
=
new
String
[
length
];
}
/**
* @nowebref
*/
public
StringList
(
String
[]
list
) {
count
=
list
.
length
;
data
=
new
String
[
count
];
System
.
arraycopy
(
list
,
0
,
data
,
0
,
count
);
}
/**
* Create from something iterable, for instance:
* StringList list = new StringList(hashMap.keySet());
*
* @nowebref
*/
public
StringList
(
Iterable
<
String
>
iter
) {
this
(
10
);
for
(
String
s
:
iter
) {
append
(
s
);
}
}
/**
* Improve efficiency by removing allocated but unused entries from the
* internal array used to store the data. Set to private, though it could
* be useful to have this public if lists are frequently making drastic
* size changes (from very large to very small).
*/
private
void
crop
() {
if
(
count
!=
data
.
length
) {
data
=
PApplet
.
subset
(
data
,
0
,
count
);
}
}
/**
* Get the length of the list.
*
* @webref stringlist:method
* @brief Get the length of the list
*/
public
int
size
() {
return
count
;
}
public
void
resize
(
int
length
) {
if
(
length
>
data
.
length
) {
String
[]
temp
=
new
String
[
length
];
System
.
arraycopy
(
data
,
0
,
temp
,
0
,
count
);
data
=
temp
;
}
else
if
(
length
>
count
) {
Arrays
.
fill
(
data
,
count
,
length
,
0
);
}
count
=
length
;
}
/**
* Remove all entries from the list.
*
* @webref stringlist:method
* @brief Remove all entries from the list
*/
public
void
clear
() {
count
=
0
;
}
/**
* Get an entry at a particular index.
*
* @webref stringlist:method
* @brief Get an entry at a particular index
*/
public
String
get
(
int
index
) {
return
data
[
index
];
}
/**
* Set the entry at a particular index. If the index is past the length of
* the list, it'll expand the list to accommodate, and fill the intermediate
* entries with 0s.
*
* @webref stringlist:method
* @brief Set an entry at a particular index
*/
public
void
set
(
int
index
,
String
what
) {
if
(
index
>=
count
) {
data
=
PApplet
.
expand
(
data
,
index
+
1
);
for
(
int
i
=
count
;
i
<
index
;
i
++) {
data
[
i
] =
null
;
}
count
=
index
+
1
;
}
data
[
index
] =
what
;
}
/**
* Remove an element from the specified index.
*
* @webref stringlist:method
* @brief Remove an element from the specified index
*/
public
String
remove
(
int
index
) {
if
(
index
<
0
||
index
>=
count
) {
throw
new
ArrayIndexOutOfBoundsException
(
index
);
}
String
entry
=
data
[
index
];
// int[] outgoing = new int[count - 1];
// System.arraycopy(data, 0, outgoing, 0, index);
// count--;
// System.arraycopy(data, index + 1, outgoing, 0, count - index);
// data = outgoing;
for
(
int
i
=
index
;
i
<
count
-
1
;
i
++) {
data
[
i
] =
data
[
i
+
1
];
}
count
--;
return
entry
;
}
// Remove the first instance of a particular value and return its index.
public
int
removeValue
(
String
value
) {
if
(
value
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] ==
null
) {
remove
(
i
);
return
i
;
}
}
}
else
{
int
index
=
index
(
value
);
if
(
index
!= -
1
) {
remove
(
index
);
return
index
;
}
}
return
-
1
;
}
// Remove all instances of a particular value and return the count removed.
public
int
removeValues
(
String
value
) {
int
ii
=
0
;
if
(
value
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] !=
null
) {
data
[
ii
++] =
data
[
i
];
}
}
}
else
{
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(!
value
.
equals
(
data
[
i
])) {
data
[
ii
++] =
data
[
i
];
}
}
}
int
removed
=
count
-
ii
;
count
=
ii
;
return
removed
;
}
// replace the first value that matches, return the index that was replaced
public
int
replaceValue
(
String
value
,
String
newValue
) {
if
(
value
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] ==
null
) {
data
[
i
] =
newValue
;
return
i
;
}
}
}
else
{
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
value
.
equals
(
data
[
i
])) {
data
[
i
] =
newValue
;
return
i
;
}
}
}
return
-
1
;
}
// replace all values that match, return the count of those replaced
public
int
replaceValues
(
String
value
,
String
newValue
) {
int
changed
=
0
;
if
(
value
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] ==
null
) {
data
[
i
] =
newValue
;
changed
++;
}
}
}
else
{
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
value
.
equals
(
data
[
i
])) {
data
[
i
] =
newValue
;
changed
++;
}
}
}
return
changed
;
}
/**
* Add a new entry to the list.
*
* @webref stringlist:method
* @brief Add a new entry to the list
*/
public
void
append
(
String
value
) {
if
(
count
==
data
.
length
) {
data
=
PApplet
.
expand
(
data
);
}
data
[
count
++] =
value
;
}
public
void
append
(
String
[]
values
) {
for
(
String
v
:
values
) {
append
(
v
);
}
}
public
void
append
(
StringList
list
) {
for
(
String
v
:
list
.
values
()) {
// will concat the list...
append
(
v
);
}
}
// public void insert(int index, int value) {
// if (index+1 > count) {
// if (index+1 < data.length) {
// }
// }
// if (index >= data.length) {
// data = PApplet.expand(data, index+1);
// data[index] = value;
// count = index+1;
//
// } else if (count == data.length) {
// if (index >= count) {
// //int[] temp = new int[count << 1];
// System.arraycopy(data, 0, temp, 0, index);
// temp[index] = value;
// System.arraycopy(data, index, temp, index+1, count - index);
// data = temp;
//
// } else {
// // data[] has room to grow
// // for() loop believed to be faster than System.arraycopy over itself
// for (int i = count; i > index; --i) {
// data[i] = data[i-1];
// }
// data[index] = value;
// count++;
// }
// }
// same as splice
public
void
insert
(
int
index
,
String
[]
values
) {
if
(
index
<
0
) {
throw
new
IllegalArgumentException
(
"insert() index cannot be negative: it was "
+
index
);
}
if
(
index
>=
values
.
length
) {
throw
new
IllegalArgumentException
(
"insert() index "
+
index
+
" is past the end of this list"
);
}
String
[]
temp
=
new
String
[
count
+
values
.
length
];
// Copy the old values, but not more than already exist
System
.
arraycopy
(
data
,
0
,
temp
,
0
,
Math
.
min
(
count
,
index
));
// Copy the new values into the proper place
System
.
arraycopy
(
values
,
0
,
temp
,
index
,
values
.
length
);
// if (index < count) {
// The index was inside count, so it's a true splice/insert
System
.
arraycopy
(
data
,
index
,
temp
,
index
+
values
.
length
,
count
-
index
);
count
=
count
+
values
.
length
;
// } else {
// // The index was past 'count', so the new count is weirder
// count = index + values.length;
// }
data
=
temp
;
}
public
void
insert
(
int
index
,
StringList
list
) {
insert
(
index
,
list
.
values
());
}
// below are aborted attempts at more optimized versions of the code
// that are harder to read and debug...
// if (index + values.length >= count) {
// // We're past the current 'count', check to see if we're still allocated
// // index 9, data.length = 10, values.length = 1
// if (index + values.length < data.length) {
// // There's still room for these entries, even though it's past 'count'.
// // First clear out the entries leading up to it, however.
// for (int i = count; i < index; i++) {
// data[i] = 0;
// }
// data[index] =
// }
// if (index >= data.length) {
// int length = index + values.length;
// int[] temp = new int[length];
// System.arraycopy(data, 0, temp, 0, count);
// System.arraycopy(values, 0, temp, index, values.length);
// data = temp;
// count = data.length;
// } else {
//
// }
//
// } else if (count == data.length) {
// int[] temp = new int[count << 1];
// System.arraycopy(data, 0, temp, 0, index);
// temp[index] = value;
// System.arraycopy(data, index, temp, index+1, count - index);
// data = temp;
//
// } else {
// // data[] has room to grow
// // for() loop believed to be faster than System.arraycopy over itself
// for (int i = count; i > index; --i) {
// data[i] = data[i-1];
// }
// data[index] = value;
// count++;
// }
/** Return the first index of a particular value. */
public
int
index
(
String
what
) {
if
(
what
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] ==
null
) {
return
i
;
}
}
}
else
{
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
what
.
equals
(
data
[
i
])) {
return
i
;
}
}
}
return
-
1
;
}
// !!! TODO this is not yet correct, because it's not being reset when
// the rest of the entries are changed
// protected void cacheIndices() {
// indexCache = new HashMap<Integer, Integer>();
// for (int i = 0; i < count; i++) {
// indexCache.put(data[i], i);
// }
// }
/**
* @webref stringlist:method
* @brief Check if a value is a part of the list
*/
public
boolean
hasValue
(
String
value
) {
if
(
value
==
null
) {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] ==
null
) {
return
true
;
}
}
}
else
{
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
value
.
equals
(
data
[
i
])) {
return
true
;
}
}
}
return
false
;
}
/**
* Sorts the array in place.
*
* @webref stringlist:method
* @brief Sorts the array in place
*/
public
void
sort
() {
sortImpl
(
false
);
}
/**
* Reverse sort, orders values from highest to lowest.
*
* @webref stringlist:method
* @brief Reverse sort, orders values from highest to lowest
*/
public
void
sortReverse
() {
sortImpl
(
true
);
}
private
void
sortImpl
(
final
boolean
reverse
) {
new
Sort
() {
@
Override
public
int
size
() {
return
count
;
}
@
Override
public
float
compare
(
int
a
,
int
b
) {
float
diff
=
data
[
a
].
compareToIgnoreCase
(
data
[
b
]);
return
reverse
? -
diff
:
diff
;
}
@
Override
public
void
swap
(
int
a
,
int
b
) {
String
temp
=
data
[
a
];
data
[
a
] =
data
[
b
];
data
[
b
] =
temp
;
}
}.
run
();
}
// use insert()
// public void splice(int index, int value) {
// }
// public void subset(int start) {
// subset(start, count - start);
// }
//
//
// public void subset(int start, int num) {
// for (int i = 0; i < num; i++) {
// data[i] = data[i+start];
// }
// count = num;
// }
/**
* @webref stringlist:method
* @brief To come...
*/
public
void
reverse
() {
int
ii
=
count
-
1
;
for
(
int
i
=
0
;
i
<
count
/
2
;
i
++) {
String
t
=
data
[
i
];
data
[
i
] =
data
[
ii
];
data
[
ii
] =
t
;
--
ii
;
}
}
/**
* Randomize the order of the list elements. Note that this does not
* obey the randomSeed() function in PApplet.
*
* @webref stringlist:method
* @brief Randomize the order of the list elements
*/
public
void
shuffle
() {
Random
r
=
new
Random
();
int
num
=
count
;
while
(
num
>
1
) {
int
value
=
r
.
nextInt
(
num
);
num
--;
String
temp
=
data
[
num
];
data
[
num
] =
data
[
value
];
data
[
value
] =
temp
;
}
}
/**
* Randomize the list order using the random() function from the specified
* sketch, allowing shuffle() to use its current randomSeed() setting.
*/
public
void
shuffle
(
PApplet
sketch
) {
int
num
=
count
;
while
(
num
>
1
) {
int
value
= (
int
)
sketch
.
random
(
num
);
num
--;
String
temp
=
data
[
num
];
data
[
num
] =
data
[
value
];
data
[
value
] =
temp
;
}
}
/**
* Make the entire list lower case.
*
* @webref stringlist:method
* @brief Make the entire list lower case
*/
public
void
lower
() {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] !=
null
) {
data
[
i
] =
data
[
i
].
toLowerCase
();
}
}
}
/**
* Make the entire list upper case.
*
* @webref stringlist:method
* @brief Make the entire list upper case
*/
public
void
upper
() {
for
(
int
i
=
0
;
i
<
count
;
i
++) {
if
(
data
[
i
] !=
null
) {
data
[
i
] =
data
[
i
].
toUpperCase
();
}
}
}
public
StringList
copy
() {
StringList
outgoing
=
new
StringList
(
data
);
outgoing
.
count
=
count
;
return
outgoing
;
}
/**
* Returns the actual array being used to store the data. Suitable for
* iterating with a for() loop, but modifying the list could cause terrible
* things to happen.
*/
public
String
[]
values
() {
crop
();
return
data
;
}
@
Override
public
Iterator
<
String
>
iterator
() {
// return valueIterator();
// }
//
//
// public Iterator<String> valueIterator() {
return
new
Iterator
<
String
>() {
int
index
= -
1
;
public
void
remove
() {
StringList
.
this
.
remove
(
index
);
}
public
String
next
() {
return
data
[++
index
];
}
public
boolean
hasNext
() {
return
index
+
1
<
count
;
}
};
}
/**
* Create a new array with a copy of all the values.
*
* @return an array sized by the length of the list with each of the values.
* @webref stringlist:method
* @brief Create a new array with a copy of all the values
*/
public
String
[]
array
() {
return
array
(
null
);
}
/**
* Copy as many values as possible into the specified array.
* @param array
*/
public
String
[]
array
(
String
[]
array
) {
if
(
array
==
null
||
array
.
length
!=
count
) {
array
=
new
String
[
count
];
}
System
.
arraycopy
(
data
,
0
,
array
,
0
,
count
);
return
array
;
}
public
StringList
getSubset
(
int
start
) {
return
getSubset
(
start
,
count
-
start
);
}
public
StringList
getSubset
(
int
start
,
int
num
) {
String
[]
subset
=
new
String
[
num
];
System
.
arraycopy
(
data
,
start
,
subset
,
0
,
num
);
return
new
StringList
(
subset
);
}
/** Get a list of all unique entries. */
public
String
[]
getUnique
() {
return
getTally
().
keyArray
();
}
/** Count the number of times each String entry is found in this list. */
public
IntDict
getTally
() {
IntDict
outgoing
=
new
IntDict
();
for
(
int
i
=
0
;
i
<
count
;
i
++) {
outgoing
.
increment
(
data
[
i
]);
}
return
outgoing
;
}
/** Create a dictionary associating each entry in this list to its index. */
public
IntDict
getOrder
() {
IntDict
outgoing
=
new
IntDict
();
for
(
int
i
=
0
;
i
<
count
;
i
++) {
outgoing
.
set
(
data
[
i
],
i
);
}
return
outgoing
;
}
// public void println() {
// for (int i = 0; i < count; i++) {
// System.out.println("[" + i + "] " + data[i]);
// }
// System.out.flush();
// }
public
String
join
(
String
separator
) {
if
(
count
==
0
) {
return
""
;
}
StringBuilder
sb
=
new
StringBuilder
();
sb
.
append
(
data
[
0
]);
for
(
int
i
=
1
;
i
<
count
;
i
++) {
sb
.
append
(
separator
);
sb
.
append
(
data
[
i
]);
}
return
sb
.
toString
();
}
// static public StringList split(String value, char delim) {
// String[] array = PApplet.split(value, delim);
// return new StringList(array);
// }
@
Override
public
String
toString
() {
StringBuilder
sb
=
new
StringBuilder
();
sb
.
append
(
getClass
().
getSimpleName
() +
" size="
+
size
() +
" [ "
);
for
(
int
i
=
0
;
i
<
size
();
i
++) {
if
(
i
!=
0
) {
sb
.
append
(
", "
);
}
sb
.
append
(
i
+
":
\"
"
+
data
[
i
] +
"
\"
"
);
}
sb
.
append
(
" ]"
);
return
sb
.
toString
();
}
}
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