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Diffstat (limited to 'mod/build-config.cxx')
| -rw-r--r-- | mod/build-config.cxx | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/mod/build-config.cxx b/mod/build-config.cxx deleted file mode 100644 index 8fbbf99..0000000 --- a/mod/build-config.cxx +++ /dev/null @@ -1,255 +0,0 @@ -// file : mod/build-config-module.cxx -*- C++ -*- -// license : MIT; see accompanying LICENSE file - -#include <mod/build-config.hxx> - -#include <libbutl/utility.hxx> // alpha(), etc. -#include <libbutl/path-pattern.hxx> - -namespace brep -{ - using namespace std; - using namespace butl; - using namespace bpkg; - using namespace bbot; - - // The default underlying class set expressions (see below). - // - static const build_class_expr default_ucs_expr ( - {"default"}, '+', "Default."); - - static const build_class_expr all_ucs_expr ( - {"all"}, '+', "All."); - - bool - exclude (const small_vector<build_class_expr, 1>& exprs, - const vector<build_constraint>& constrs, - const build_config& cfg, - const map<string, string>& class_inheritance_map, - string* reason, - bool default_all_ucs) - { - // Save the first sentence of the reason, lower-case the first letter if - // the beginning looks like a word (all subsequent characters until a - // whitespace are lower-case letters). - // - auto sanitize = [] (const string& reason) - { - string r (reason.substr (0, reason.find ('.'))); - - char c (r[0]); // Can be '\0'. - if (alpha (c) && c == ucase (c)) - { - bool word (true); - - for (size_t i (1); - i != r.size () && (c = r[i]) != ' ' && c != '\t' && c != '\n'; - ++i) - { - // Is not a word if contains a non-letter or an upper-case letter. - // - if (!alpha (c) || c == ucase (c)) - { - word = false; - break; - } - } - - if (word) - r[0] = lcase (r[0]); - } - - return r; - }; - - // First, match the configuration against the package underlying build - // class set and expressions. - // - bool m (false); - - // Match the configuration against an expression, updating the match - // result. - // - // We will use a comment of the first encountered excluding expression - // (changing the result from true to false) or non-including one (leaving - // the false result) as an exclusion reason. - // - auto match = [&cfg, &m, reason, &sanitize, &class_inheritance_map] - (const build_class_expr& e) - { - bool pm (m); - e.match (cfg.classes, class_inheritance_map, m); - - if (reason != nullptr) - { - // Reset the reason which, if saved, makes no sense anymore. - // - if (m) - { - reason->clear (); - } - else if (reason->empty () && - // - // Exclusion. - // - (pm || - // - // Non-inclusion. Make sure that the build class expression - // is empty or starts with an addition (+...). - // - e.expr.empty () || - e.expr.front ().operation == '+')) - { - *reason = sanitize (e.comment); - } - } - }; - - // Determine the underlying class set. Note that in the future we can - // potentially extend the underlying set with special classes. - // - const build_class_expr* ucs ( - !exprs.empty () && !exprs.front ().underlying_classes.empty () - ? &exprs.front () - : nullptr); - - // Note that the combined package build configuration class expression can - // be represented as the underlying class set used as a starting set for - // the original expressions and a restricting set, simultaneously. For - // example, for the expression: - // - // default legacy : -msvc - // - // the resulting expression will be: - // - // +( +default +legacy ) -msvc &( +default +legacy ) - // - // Let's, however, optimize it a bit based on the following facts: - // - // - If the underlying class set expression (+default +legacy in the above - // example) evaluates to false, then the resulting expression also - // evaluates to false due to the trailing '&' operation. Thus, we don't - // need to evaluate further if that's the case. - // - // - On the other hand, if the underlying class set expression evaluates - // to true, then we don't need to apply the trailing '&' operation as it - // cannot affect the result. - // - const build_class_expr& ucs_expr ( - ucs != nullptr ? build_class_expr (ucs->underlying_classes, - '+', - ucs->comment) : - default_all_ucs ? all_ucs_expr : - default_ucs_expr); - - match (ucs_expr); - - if (m) - { - for (const build_class_expr& e: exprs) - match (e); - } - - // Exclude the configuration if it doesn't match the compound expression. - // - if (!m) - return true; - - // Now check if the configuration is excluded/included via the patterns. - // - // To implement matching of absent name components with wildcard-only - // pattern components we are going to convert names to paths (see - // dash_components_to_path() for details). - // - // And if any of the build-{include,exclude} values (which is legal) or - // the build configuration name/target (illegal) are invalid paths, then - // we assume no match. - // - if (!constrs.empty ()) - try - { - path cn (dash_components_to_path (cfg.name)); - path tg (dash_components_to_path (cfg.target.string ())); - - for (const build_constraint& c: constrs) - { - if (path_match (cn, - dash_components_to_path (c.config), - dir_path () /* start */, - path_match_flags::match_absent) && - (!c.target || - path_match (tg, - dash_components_to_path (*c.target), - dir_path () /* start */, - path_match_flags::match_absent))) - { - if (!c.exclusion) - return false; - - if (reason != nullptr) - *reason = sanitize (c.comment); - - return true; - } - } - } - catch (const invalid_path&) {} - - return false; - } - - path - dash_components_to_path (const string& pattern) - { - string r; - size_t nstar (0); - for (const path_pattern_term& pt: path_pattern_iterator (pattern)) - { - switch (pt.type) - { - case path_pattern_term_type::star: - { - // Replace ** with */**/* and skip all the remaining stars that may - // follow in this sequence. - // - if (nstar == 0) - r += "*"; - else if (nstar == 1) - r += "/**/*"; // The first star is already copied. - - break; - } - case path_pattern_term_type::literal: - { - // Replace '-' with '/' and fall through otherwise. - // - if (get_literal (pt) == '-') - { - r += '/'; - break; - } - } - // Fall through. - default: - { - r.append (pt.begin, pt.end); // Copy the pattern term as is. - } - } - - nstar = pt.star () ? nstar + 1 : 0; - } - - // Append the trailing slash to match the resulting paths as directories. - // This is required for the trailing /* we could append to match absent - // directory path components (see path_match_flags::match_absent for - // details). - // - // Note that valid dash components may not contain a trailing dash. - // Anyway, any extra trailing slashes will be ignored by the path - // constructor. - // - r += '/'; - - return path (move (r)); - } -} |