diff options
Diffstat (limited to 'libbuild2')
| -rw-r--r-- | libbuild2/version/init.cxx | 129 | ||||
| -rw-r--r-- | libbuild2/version/module.hxx | 1 |
2 files changed, 86 insertions, 44 deletions
diff --git a/libbuild2/version/init.cxx b/libbuild2/version/init.cxx index 05d5fe0..0a6a964 100644 --- a/libbuild2/version/init.cxx +++ b/libbuild2/version/init.cxx @@ -3,6 +3,8 @@ #include <libbuild2/version/init.hxx> +#include <cstring> // strchr() + #include <libbutl/manifest-parser.hxx> #include <libbuild2/scope.hxx> @@ -143,61 +145,98 @@ namespace build2 } else if (nv.name == "depends") { - // According to the package manifest spec, the format of the - // 'depends' value is as follows: - // - // depends: [?][*] <alternatives> [; <comment>] - // - // <alternatives> := <dependency> [ '|' <dependency>]* - // <dependency> := <name> [<constraint>] - // <constraint> := <comparison> | <range> - // <comparison> := ('==' | '>' | '<' | '>=' | '<=') <version> - // <range> := ('(' | '[') <version> <version> (')' | ']') - // - // Note that we don't do exhaustive validation here leaving it - // to the package manager. - // string v (move (nv.value)); - size_t p; + // Parse the dependency and add it to the map (see + // bpkg::dependency_alternatives class for dependency syntax). + // + // Note that currently we only consider simple dependencies: + // singe package without alternatives, clauses, or newlines. + // In the future, if/when we add full support, we will likely + // keep this as a fast path. + // + // Also note that we don't do exhaustive validation here leaving + // it to the package manager. // Get rid of the comment. // + // Note that we can potentially mis-detect the comment + // separator, since ';' can be a part of some of the dependency + // alternative clauses. If that's the case, we will skip the + // dependency later. + // + size_t p; if ((p = v.find (';')) != string::npos) v.resize (p); - // Get rid of conditional/runtime markers. Note that enither of - // them is valid in the rest of the value. + // Skip the dependency if it is not a simple one. + // + // Note that we will check for the presence of the reflect + // clause later since `=` can also be in the constraint. + // + if (v.find_first_of ("{?|\n") != string::npos) + continue; + + // Find the beginning of the dependency package name, skipping + // the build-time marker, if present. // - if ((p = v.find_last_of ("?*")) != string::npos) - v.erase (0, p + 1); + bool buildtime (v[0] == '*'); + size_t b (buildtime ? v.find_first_not_of (" \t", 1) : 0); - // Parse as |-separated "words". + if (b == string::npos) + fail (l) << "invalid dependency " << v << ": no package name"; + + // Find the end of the dependency package name. + // + p = v.find_first_of (" \t=<>[(~^", b); + + // Dependency name (without leading/trailing white-spaces). // - for (size_t b (0), e (0); next_word (v, b, e, '|'); ) + string n (v, b, p == string::npos ? p : p - b); + + string vc; // Empty if no constraint is specified + + // Position to the first non-whitespace character after the + // dependency name, which, if present, can be a part of the + // version constraint or the reflect clause. + // + if (p != string::npos) + p = v.find_first_not_of (" \t", p); + + if (p != string::npos) + { + // Check if this is definitely not a version constraint and + // drop this dependency if that's the case. + // + if (strchr ("=<>[(~^", v[p]) == nullptr) + continue; + + // Ok, we have a constraint, check that there is no reflect + // clause after it (the only other valid `=` in a constraint + // is in the immediately following character as part of + // `==`, `<=`, or `>=`). + // + if (v.size () > p + 2 && v.find ('=', p + 2) != string::npos) + continue; + + vc.assign (v, p); + trim (vc); + } + + // Finally, add the dependency to the map. + // + try + { + package_name pn (move (n)); + string v (pn.variable ()); + + ds.emplace (move (v), + dependency {move (pn), move (vc), buildtime}); + } + catch (const invalid_argument& e) { - string d (v, b, e - b); - trim (d); - - p = d.find_first_of (" \t=<>[(~^"); - string n (d, 0, p); - string c (p != string::npos ? string (d, p) : string ()); - - trim (n); - trim (c); - - try - { - package_name pn (move (n)); - string v (pn.variable ()); - - ds.emplace (move (v), dependency {move (pn), move (c)}); - } - catch (const invalid_argument& e) - { - fail (l) << "invalid package name for dependency " - << d << ": " << e; - } + fail (l) << "invalid dependency package name '" << n << "': " + << e; } } } @@ -246,7 +285,9 @@ namespace build2 { auto i (ds.find ("build2")); - if (i != ds.end () && !i->second.constraint.empty ()) + if (i != ds.end () && + i->second.buildtime && + !i->second.constraint.empty ()) try { check_build_version ( diff --git a/libbuild2/version/module.hxx b/libbuild2/version/module.hxx index e80870e..8549e03 100644 --- a/libbuild2/version/module.hxx +++ b/libbuild2/version/module.hxx @@ -22,6 +22,7 @@ namespace build2 { package_name name; string constraint; + bool buildtime; }; using dependencies = map<string, dependency>; |