-
claus.reinke@talk21.com authored
- #1839 asks for a ghc-pkg dump feature, #1463 for the ability to query the same fields in several packages at once. - this patch enables substring matching for packages in 'list', 'describe', and 'field', and for modules in find-module. it also allows for comma-separated multiple fields in 'field'. substring matching can optionally ignore cases to avoid the rather unpredictable capitalisation of packages. - the patch is not quite as full-featured as the one attached to #1839, but avoids the additional dependency on regexps. open ended substrings are indicated by '*' (only the three forms prefix*, *suffix, *infix* are supported) - on windows, the use of '*' for package/module name globbing leads to conflicts with filename globbing: by default, windows programs are self-globbing, and bash adds another level of globbing on top of that. it seems impossible to escape '*' from both levels of globbing, so we disable default globbing for ghc-pkg and ghc-pkg-inplace. users of bash will still have filename globbing available, users of cmd won't. - if it is considered necessary to reenable filename globbing for cmd users, it should be done selectively, only for filename parameters. to this end, the patch includes a glob.hs program which simply echoes its parameters after filename globbing. see the commented out glob command in Main.hs for usage or testing. - this covers both tickets, and permits for the most common query patterns (finding all packages contributing to the System. hierarchy, finding all regex or string packages, listing all package maintainers or haddock directories, ..), which not only i have wanted to have for a long time. examples (the quotes are needed to escape shell-based filename globbing and should be omitted in cmd.exe): ghc-pkg list '*regex*' --ignore-case ghc-pkg list '*string*' --ignore-case ghc-pkg list '*gl*' --ignore-case ghc-pkg find-module 'Data.*' ghc-pkg find-module '*Monad*' ghc-pkg field '*' name,maintainer ghc-pkg field '*' haddock-html ghc-pkg describe '*'
68f7cd16