The Meson Build System
http://mesonbuild.com/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
271 lines
6.9 KiB
271 lines
6.9 KiB
name: str |
|
long_name: String |
|
description: | |
|
All [strings](Syntax.md#strings) have the following methods. Strings |
|
are immutable, all operations return their results as a new string. |
|
|
|
methods: |
|
|
|
# str.format(fmt, value...) |
|
- name: format |
|
returns: str |
|
description: | |
|
Strings can be built using the string formatting functionality. |
|
|
|
See [the Meson syntax entry](Syntax.md#string-formatting) for more |
|
information. |
|
example: | |
|
```meson |
|
template = 'string: @0@, number: @1@, bool: @2@' |
|
res = template.format('text', 1, true) |
|
# res now has value 'string: text, number: 1, bool: true' |
|
``` |
|
|
|
arg_flattening: false |
|
|
|
posargs: |
|
fmt: |
|
description: | |
|
The string to format. |
|
|
|
The formatting works by replacing placeholders of type `@number@` with |
|
the corresponding varargs. |
|
type: str |
|
|
|
varargs: |
|
name: value |
|
description: The values to replace the @number@ placeholders in the format string. |
|
type: int | bool | str |
|
|
|
# str.replace(old, new) |
|
- name: replace |
|
description: Search all occurrences of `old` and and replace it with `new` |
|
returns: str |
|
since: 0.58.0 |
|
example: | |
|
```meson |
|
# Replaces all instances of one substring with another |
|
s = 'semicolons;as;separators' |
|
s = s.replace('as', 'are') |
|
# 's' now has the value of 'semicolons;are;separators' |
|
``` |
|
|
|
posargs: |
|
old: |
|
description: The substring to search |
|
type: str |
|
|
|
new: |
|
description: The replacement string |
|
type: str |
|
|
|
# str.strip() |
|
- name: strip |
|
description: Removes leading/ending spaces and newlines from the string. |
|
returns: str |
|
example: | |
|
```meson |
|
# Similar to the Python str.strip(). Removes leading/ending spaces and newlines |
|
define = ' -Dsomedefine ' |
|
stripped_define = define.strip() |
|
# 'stripped_define' now has the value '-Dsomedefine' |
|
``` |
|
|
|
optargs: |
|
strip_chars: |
|
type: str |
|
since: 0.43.0 |
|
description: All characters in this string will be stripped. |
|
|
|
# str.to_lower() |
|
- name: to_lower |
|
description: Converts all characters to lower case |
|
returns: str |
|
example: | |
|
```meson |
|
target = 'x86_FreeBSD' |
|
lower = target.to_lower() # t now has the value 'x86_freebsd' |
|
``` |
|
|
|
# str.to_upper() |
|
- name: to_upper |
|
description: Converts all characters to upper case |
|
returns: str |
|
example: | |
|
```meson |
|
target = 'x86_FreeBSD' |
|
upper = target.to_upper() # t now has the value 'X86_FREEBSD' |
|
``` |
|
|
|
# str.to_int() |
|
- name: to_int |
|
description: Converts the string to an int and throws an error if it can't be |
|
returns: int |
|
example: | |
|
```meson |
|
version = '1' |
|
# Converts the string to an int and throws an error if it can't be |
|
ver_int = version.to_int() |
|
``` |
|
|
|
# str.contains() |
|
- name: contains |
|
returns: bool |
|
description: Returns `true` if string contains the string specified as the argument. |
|
example: | |
|
```meson |
|
target = 'x86_FreeBSD' |
|
is_fbsd = target.to_lower().contains('freebsd') |
|
# is_fbsd now has the boolean value 'true' |
|
``` |
|
|
|
posargs: |
|
fragment: |
|
type: str |
|
description: The string fragment to check |
|
|
|
# str.startswith() |
|
- name: startswith |
|
returns: bool |
|
description: Returns true if string starts with the string specified as the argument. |
|
posargs_inherit: str.contains |
|
example: | |
|
```meson |
|
target = 'x86_FreeBSD' |
|
is_x86 = target.startswith('x86') # boolean value 'true' |
|
``` |
|
|
|
# str.endswith() |
|
- name: endswith |
|
returns: bool |
|
description: Returns true if string ends with the string specified as the argument. |
|
posargs_inherit: str.contains |
|
example: | |
|
```meson |
|
target = 'x86_FreeBSD' |
|
is_bsd = target.to_lower().endswith('bsd') # boolean value 'true' |
|
``` |
|
|
|
# str.substring() |
|
- name: substring |
|
returns: str |
|
since: 0.56.0 |
|
description: | |
|
Returns a substring specified from `start` to `end`. |
|
Both `start` and `end` arguments are optional, so, for example, `'foobar'.substring()` will return `'foobar'`. |
|
|
|
The method accepts negative values where negative `start` is relative to the end of |
|
string `len(string) - start` as well as negative `end`. |
|
|
|
example: | |
|
```meson |
|
# Similar to the Python str[start:end] syntax |
|
target = 'x86_FreeBSD' |
|
platform = target.substring(0, 3) # prefix string value 'x86' |
|
system = target.substring(4) # suffix string value 'FreeBSD' |
|
``` |
|
|
|
Example with negative values: |
|
|
|
```meson |
|
string = 'foobar' |
|
string.substring(-5, -3) # => 'oo' |
|
string.substring(1, -1) # => 'ooba' |
|
``` |
|
|
|
optargs: |
|
start: |
|
type: int |
|
description: The start position |
|
|
|
end: |
|
type: int |
|
description: The end position |
|
|
|
# str.split |
|
- name: split |
|
returns: list[str] |
|
description: | |
|
Splits the string at the specified character |
|
(or whitespace if not set) and returns the parts in an |
|
array. |
|
|
|
example: | |
|
```meson |
|
# Similar to the Python str.split() |
|
components = 'a b c d '.split() |
|
# components now has the value ['a', 'b', 'c', 'd'] |
|
components = 'a b c d '.split(' ') |
|
# components now has the value ['a', 'b', '', '', 'c', 'd', ''] |
|
``` |
|
|
|
optargs: |
|
split_string: |
|
type: str |
|
description: Specifies the character / substring where to split the string. |
|
|
|
# str.join() |
|
- name: join |
|
returns: str |
|
description: | |
|
The opposite of split, |
|
for example `'.'.join(['a', 'b', 'c']` yields `'a.b.c'`. |
|
|
|
example: | |
|
```meson |
|
# Similar to the Python str.join() |
|
output = ' '.join(['foo', 'bar']) |
|
# Output value is 'foo bar' |
|
pathsep = ':' |
|
path = pathsep.join(['/usr/bin', '/bin', '/usr/local/bin']) |
|
# path now has the value '/usr/bin:/bin:/usr/local/bin' |
|
``` |
|
|
|
varargs: |
|
name: strings |
|
type: str |
|
since: 0.60.0 |
|
description: | |
|
The strings to join with the current string. |
|
|
|
Before Meson *0.60.0* this function only accepts a single positional |
|
argument of the type [[list[str]]]. |
|
|
|
# str.underscorify |
|
- name: underscorify |
|
returns: str |
|
description: Creates a string where every non-alphabetical non-number character is replaced with `_`. |
|
example: | |
|
```meson |
|
name = 'Meson Docs.txt#Reference-manual' |
|
# Replaces all characters other than `a-zA-Z0-9` with `_` (underscore) |
|
# Useful for substituting into #defines, filenames, etc. |
|
underscored = name.underscorify() |
|
# underscored now has the value 'Meson_Docs_txt_Reference_manual' |
|
``` |
|
|
|
# str.version_compare |
|
- name: version_compare |
|
returns: bool |
|
description: Does semantic version comparison. |
|
example: | |
|
```meson |
|
version = '1.2.3' |
|
# Compare version numbers semantically |
|
is_new = version.version_compare('>=2.0') |
|
# is_new now has the boolean value false |
|
# Supports the following operators: '>', '<', '>=', '<=', '!=', '==', '=' |
|
``` |
|
|
|
Meson version comparison conventions include: |
|
|
|
```meson |
|
'3.6'.version_compare('>=3.6.0') == false |
|
``` |
|
|
|
It is best to be unambiguous and specify the full revision level to compare. |
|
|
|
posargs: |
|
compare_string: |
|
type: str |
|
description: The string to compare to.
|
|
|