diff options
author | lloyd <[email protected]> | 2009-07-21 04:28:09 +0000 |
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committer | lloyd <[email protected]> | 2009-07-21 04:28:09 +0000 |
commit | abcfd1cf4b351f856c2df11ed1cd972a3a5155a9 (patch) | |
tree | 7b05ce4f33fe8c1c94d77ce235b4cd6b9bedc3b0 /src/libstate/scan_name.cpp | |
parent | b1fc3ff3fe19152eaf1adbdd9f503dfaf2b8a500 (diff) | |
parent | 57d64c1026cfa0fba775d393920aebaa02bf0f56 (diff) |
propagate from branch 'net.randombit.botan' (head 95eb8083f5884531e5ca0667388f8a6fb6d05c41)
to branch 'net.randombit.botan.c++0x' (head 56e105e678540c8bcafa4d0198c19a9489fbf8d1)
Diffstat (limited to 'src/libstate/scan_name.cpp')
-rw-r--r-- | src/libstate/scan_name.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/libstate/scan_name.cpp b/src/libstate/scan_name.cpp new file mode 100644 index 000000000..4ca6e6d59 --- /dev/null +++ b/src/libstate/scan_name.cpp @@ -0,0 +1,75 @@ +/** +SCAN Name Abstraction +(C) 2008 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/scan_name.h> +#include <botan/parsing.h> +#include <botan/libstate.h> +#include <botan/exceptn.h> +#include <stdexcept> + +namespace Botan { + +namespace { + +std::vector<std::string> +parse_and_deref_aliases(const std::string& algo_spec) + { + std::vector<std::string> parts = parse_algorithm_name(algo_spec); + std::vector<std::string> out; + + for(size_t i = 0; i != parts.size(); ++i) + { + std::string part_i = global_state().deref_alias(parts[i]); + + if(i == 0 && part_i.find_first_of(",()") != std::string::npos) + { + std::vector<std::string> parts_i = parse_and_deref_aliases(part_i); + + for(size_t j = 0; j != parts_i.size(); ++j) + out.push_back(parts_i[j]); + } + else + out.push_back(part_i); + } + + return out; + } + +} + +SCAN_Name::SCAN_Name(const std::string& algo_spec) + { + orig_algo_spec = algo_spec; + + name = parse_and_deref_aliases(algo_spec); + + if(name.size() == 0) + throw Decoding_Error("Bad SCAN name " + algo_spec); + } + +std::string SCAN_Name::arg(u32bit i) const + { + if(i >= arg_count()) + throw std::range_error("SCAN_Name::argument"); + return name[i+1]; + } + +std::string SCAN_Name::arg(u32bit i, const std::string& def_value) const + { + if(i >= arg_count()) + return def_value; + return name[i+1]; + } + +u32bit SCAN_Name::arg_as_u32bit(u32bit i, u32bit def_value) const + { + if(i >= arg_count()) + return def_value; + return to_u32bit(name[i+1]); + } + +} |