diff options
author | Karen Arutyunov <karen@codesynthesis.com> | 2017-05-01 16:08:43 +0300 |
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committer | Karen Arutyunov <karen@codesynthesis.com> | 2017-05-01 16:59:24 +0300 |
commit | 61377c582e0f2675baa5f5e6e30a35d1a4164b33 (patch) | |
tree | 11cdca992834d7f7f197f72856712fbcb3020e3d /libbutl/tab-parser.hxx | |
parent | 442c1a6790e52baa0c081f310d4d9e9b6f1ff638 (diff) |
Add hxx extension for headers and lib prefix for library dir
Diffstat (limited to 'libbutl/tab-parser.hxx')
-rw-r--r-- | libbutl/tab-parser.hxx | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libbutl/tab-parser.hxx b/libbutl/tab-parser.hxx new file mode 100644 index 0000000..311c54b --- /dev/null +++ b/libbutl/tab-parser.hxx @@ -0,0 +1,72 @@ +// file : libbutl/tab-parser.hxx -*- C++ -*- +// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#ifndef LIBBUTL_TAB_PARSER_HXX +#define LIBBUTL_TAB_PARSER_HXX + +#include <string> +#include <vector> +#include <istream> +#include <cstdint> // uint64_t +#include <stdexcept> // runtime_error + +#include <libbutl/export.hxx> + +namespace butl +{ + class LIBBUTL_EXPORT tab_parsing: public std::runtime_error + { + public: + tab_parsing (const std::string& name, + std::uint64_t line, + std::uint64_t column, + const std::string& description); + + std::string name; + std::uint64_t line; + std::uint64_t column; + std::string description; + }; + + // Line and columns are useful for issuing diagnostics about invalid or + // missing fields. + // + struct tab_field + { + std::string value; // Field string (quoting preserved). + std::uint64_t column; // Field start column number (one-based). + }; + + struct tab_fields: std::vector<tab_field> + { + std::uint64_t line; // Line number (one-based). + std::uint64_t end_column; // End-of-line column (line length). + }; + + // Read and parse lines consisting of space-separated fields. Field can + // contain single or double quoted substrings (with spaces) which are + // interpreted but preserved. No escaping of the quote characters is + // supported. Blank lines and lines that start with # (collectively called + // empty lines) are ignored. + // + class LIBBUTL_EXPORT tab_parser + { + public: + tab_parser (std::istream& is, const std::string& name) + : is_ (is), name_ (name) {} + + // Return next line of fields. Skip empty lines. Empty result denotes the + // end of stream. + // + tab_fields + next (); + + private: + std::istream& is_; + const std::string name_; + std::uint64_t line_ = 0; + }; +} + +#endif // LIBBUTL_TAB_PARSER_HXX |