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Python/strings/string_switch_case.py at master · maxleaf/Python · GitHub
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string_switch_case.py
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import
re
"""
general info:
https://en.wikipedia.org/wiki/Naming_convention_(programming)#Python_and_Ruby
pascal case [ an upper Camel Case ]: https://en.wikipedia.org/wiki/Camel_case
camel case: https://en.wikipedia.org/wiki/Camel_case
kebab case [ can be found in general info ]:
https://en.wikipedia.org/wiki/Naming_convention_(programming)#Python_and_Ruby
snake case: https://en.wikipedia.org/wiki/Snake_case
"""
# assistant functions
def
split_input
(
str_
:
str
)
->
list
:
"""
>>> split_input("one two 31235three4four")
[['one', 'two', '31235three4four']]
"""
return
[
char
.
split
()
for
char
in
re
.
split
(
r"[^ a-z A-Z 0-9 \s]"
,
str_
)]
def
to_simple_case
(
str_
:
str
)
->
str
:
"""
>>> to_simple_case("one two 31235three4four")
'OneTwo31235three4four'
>>> to_simple_case("This should be combined")
'ThisShouldBeCombined'
>>> to_simple_case("The first letters are capitalized, then string is merged")
'TheFirstLettersAreCapitalizedThenStringIsMerged'
>>> to_simple_case("special characters :, ', %, ^, $, are ignored")
'SpecialCharactersAreIgnored'
"""
string_split
=
split_input
(
str_
)
return
""
.
join
(
[
""
.
join
([
char
.
capitalize
()
for
char
in
sub_str
])
for
sub_str
in
string_split
]
)
def
to_complex_case
(
text
:
str
,
upper
:
bool
,
separator
:
str
)
->
str
:
"""
Returns the string concatenated with the delimiter we provide.
Parameters:
@text: The string on which we want to perform operation
@upper: Boolean value to determine whether we want capitalized result or not
@separator: The delimiter with which we want to concatenate words
Examples:
>>> to_complex_case("one two 31235three4four", True, "_")
'ONE_TWO_31235THREE4FOUR'
>>> to_complex_case("one two 31235three4four", False, "-")
'one-two-31235three4four'
"""
try
:
string_split
=
split_input
(
text
)
if
upper
:
res_str
=
""
.
join
(
[
separator
.
join
([
char
.
upper
()
for
char
in
sub_str
])
for
sub_str
in
string_split
]
)
else
:
res_str
=
""
.
join
(
[
separator
.
join
([
char
.
lower
()
for
char
in
sub_str
])
for
sub_str
in
string_split
]
)
return
res_str
except
IndexError
:
return
"not valid string"
# main content
def
to_pascal_case
(
text
:
str
)
->
str
:
"""
>>> to_pascal_case("one two 31235three4four")
'OneTwo31235three4four'
"""
return
to_simple_case
(
text
)
def
to_camel_case
(
text
:
str
)
->
str
:
"""
>>> to_camel_case("one two 31235three4four")
'oneTwo31235three4four'
"""
try
:
res_str
=
to_simple_case
(
text
)
return
res_str
[
0
].
lower
()
+
res_str
[
1
:]
except
IndexError
:
return
"not valid string"
def
to_snake_case
(
text
:
str
,
upper
:
bool
)
->
str
:
"""
>>> to_snake_case("one two 31235three4four", True)
'ONE_TWO_31235THREE4FOUR'
>>> to_snake_case("one two 31235three4four", False)
'one_two_31235three4four'
"""
return
to_complex_case
(
text
,
upper
,
"_"
)
def
to_kebab_case
(
text
:
str
,
upper
:
bool
)
->
str
:
"""
>>> to_kebab_case("one two 31235three4four", True)
'ONE-TWO-31235THREE4FOUR'
>>> to_kebab_case("one two 31235three4four", False)
'one-two-31235three4four'
"""
return
to_complex_case
(
text
,
upper
,
"-"
)
if
__name__
==
"__main__"
:
__import__
(
"doctest"
).
testmod
()
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