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#include "nfotiser.h" |
#include "nfotiser.h" |
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/* |
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* Parsing works as follows: |
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* |
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* - strip completely empty line |
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* - strip line beginning with hash mark |
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* - if line ends with backslash, get next line that is not |
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* + empty |
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* + beginning with a hash mark |
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* and look if it begins with a tab (if not: syntax error) |
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* if so, strip backslash + newline + tab and repeat |
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* - if line begins with a tab, strip it and append line to |
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* the last line, including the newline separator |
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* - match line with '([A-Za-z_][A-Za-z0-9_]*)\t(.*)$' and |
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* call \1 the key and \2 the value (else: syntax error) |
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* - uppercase the key |
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* - enter the key/value pair in the system |
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* |
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* The following is also part of parsing, but left to the caller: |
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* - replace ${foo} with the value of key "foo" |
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* - undouble all backslashes |
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* |
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* We enter the key into the system up to three-fold: |
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* - KWT_NORMAL => ([A-Za-z_][A-Za-z0-9_]*) |
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* + \1 = keyword (toupper'd) |
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* - KWT_MULTI => ([A-Za-z_][A-Za-z0-9_]*)_([A-Za-z0-9_]*) |
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* + \1 = keyword (toupper'd) |
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* + \2 = kw_multi (case preserving) |
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* - KWT_ITERATED => ([A-Za-z_][A-Za-z0-9_]*)_([0-9]*) |
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* + \1 = keyword (toupper'd) |
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* + \2 = kw_iter (unsigned integer value) |
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* - KWT_MULTITER => ([A-Za-z_][A-Za-z0-9_]*)_([0-9]*)_([A-Za-z0-9_]*) |
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* + \1 = keyword (toupper'd) |
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* + \2 = kw_iter (unsigned integer value) |
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* + \3 = kw_multi (case preserving) |
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* |
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* Cf. https://www.freewrt.org/trac/wiki/Documentation/Specs/Freewrt_info_files |
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* for more examples and a more human-readable version of this specification. |
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*/ |
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struct parser_result * |
struct parser_result * |
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nfo_parse(int fd, const struct parser_keywords *kws) |
nfo_parse(int fd, const struct parser_keywords *kws) |
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{ |
{ |
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