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- Gettext PO file grammar in BNF notation: © 2012 cage
- This work is licensed under the Creative Commons
- Attribution-ShareAlike 3.0 Unported License. To view a copy of this
- license, visit http://creativecommons.org/licenses/by-sa/3.0/ or send
- a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain
- View, California, 94041, USA.
- pofile := header msg*
- header := msgid '""' newline msgstr_header newline
- msgstr_header := msgstr escaped_string* plurar_string escaped_string* newline
- plural_string := '"Plural-Forms:' plurar_number_expr plural_expression_string
- plural_expression_string := 'plural=' plural_expression
- plural_number_expr := 'nplural=' number end_expression
- msg := comments* flag_comment? comments* msgid escaped_string* newline
- (msgid_plural escaped_string newline (msg_str_plural)+ ) |
- (msg_str escaped_string*)
- flag_comment := '#,' string newline
- msg_str_plural:= 'msgstr[' number ']' escaped_string* newline
- comments := '#' newline | '^#[^,].*' newline
- msgstr := 'msgstr'
- msgid := 'msgid'
- msgid_plural := 'msgid_plural'
- newline = ascii code 10
- plural_expression := (number | boolean_expression | ternary_expression) end_expression
- ternary_expression := boolean_expression '?' expression ':' expression
- expression := ternary_expression | number
- boolean_expression := arithmetic_expression |
- '(' boolean_expression ')' |
- boolean_expression boolean_op boolean_expression |
- boolean_expression boolean_op arithmetic_expression |
- arithmetic_expression boolean_op boolean_expression |
- arithmetic_expression boolean_op arithmetic_expression |
- arithmetic_expression := 'n' comparision_op number |
- 'n' arithmetic_op number comparision_op number
- boolean_op := '&&' | '||'
- arithmetic_op := '%'
- comparision_op := '<' | '>' | '<=' | '>=' | '!=' | '=='
- number := 0|[1-9][0-9]+|[1-9]
- end_expression := ';'
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