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Rather than always using the default prefix, we should determine it from
the location of the grub2 config file.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Valgrind reports an invalid usage of an uninitialised var in yyerror,
causing testcase failures.
Initialise lineno before we start parsing.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Rather than printf() & exit(), use the pb logging functions and abort
the parse.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Putting an if-statement on one line should be possible:
if true; then echo "true"; else echo "false"; fi
To do this, we'll need to allow both EOLs and TOKEN_DELIM after then and
else.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Files may not have a trailing newline.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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For better trace output.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Rather than just having one conditional in an if statement, we use a
list of conditionals instead. This allows us to implement elif.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Rather than holding the condition and conditional-statements in struct
grub2_statment_if, create a new conditional type that contains these. We
can then use this to implement elif statements.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Re-arrange the script/statements parse rules to allow empty statements.
We also move the EOL token out of the 'statement' definition, and use
it to separate 'statements'.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Just recurse into the submenu items, as we flatten everything into the
one menu.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Only run the script if the parse succeeded, and and improve the
error reporting by enabling verbose errors and line numbers.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We'll need the context to add boot options.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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No need for a separate file here.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Now that we can parse scripts, we want some infrastructure for
execution.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Add our simple parser to handle a grub2 script. Since we're not building
a parse tree at the moment (we have no reduce rules), we just have a
simple word-based %union for our tokens.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Add a simple flex lexer to tokenise our grub2 config files.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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