102 lines
3.7 KiB
Lua
102 lines
3.7 KiB
Lua
-- Convenience Lua functions that can be used within Python srpm/rpm macros
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-- Determine alternate names provided from the given name.
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-- Used in pythonname provides generator, python_provide and py_provides.
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-- If only_3_to_3_X is false/nil/unused there are 2 rules:
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-- python3-foo -> python-foo, python3.X-foo
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-- python3.X-foo -> python-foo, python3-foo
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-- If only_3_to_3_X is true there is only 1 rule:
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-- python3-foo -> python3.X-foo
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-- There is no python-foo -> rule, python-foo packages are version agnostic.
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-- Returns a table/array with strings. Empty when no rule matched.
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local function python_altnames(name, only_3_to_3_X)
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local xy = rpm.expand('%{__default_python3_pkgversion}')
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local altnames = {}
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local replaced
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-- NB: dash needs to be escaped!
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if name:match('^python3%-') then
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local prefixes = only_3_to_3_X and {} or {'python-'}
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for i, prefix in ipairs({'python' .. xy .. '-', table.unpack(prefixes)}) do
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replaced = name:gsub('^python3%-', prefix)
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table.insert(altnames, replaced)
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end
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elseif name:match('^python' .. xy .. '%-') and not only_3_to_3_X then
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for i, prefix in ipairs({'python-', 'python3-'}) do
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replaced = name:gsub('^python' .. xy .. '%-', prefix)
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table.insert(altnames, replaced)
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end
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end
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return altnames
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end
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local function __python_alttags(name, evr, tag_type)
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-- for the "provides" tag_type we want also unversioned provides
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local only_3_to_3_X = tag_type ~= "provides"
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local operator = tag_type == "provides" and ' = ' or ' < '
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-- global cache that tells what package NEVRs were already processed for the
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-- given tag type
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if __python_alttags_beenthere == nil then
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__python_alttags_beenthere = {}
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end
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if __python_alttags_beenthere[tag_type] == nil then
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__python_alttags_beenthere[tag_type] = {}
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end
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__python_alttags_beenthere[tag_type][name .. ' ' .. evr] = true
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local alttags = {}
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for i, altname in ipairs(python_altnames(name, only_3_to_3_X)) do
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table.insert(alttags, altname .. operator .. evr)
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end
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return alttags
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end
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-- For any given name and epoch-version-release, return provides except self.
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-- Uses python_altnames under the hood
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-- Returns a table/array with strings.
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local function python_altprovides(name, evr)
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return __python_alttags(name, evr, "provides")
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end
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-- For any given name and epoch-version-release, return versioned obsoletes except self.
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-- Uses python_altnames under the hood
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-- Returns a table/array with strings.
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local function python_altobsoletes(name, evr)
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return __python_alttags(name, evr, "obsoletes")
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end
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local function __python_alttags_once(name, evr, tag_type)
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-- global cache that tells what provides were already processed
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if __python_alttags_beenthere == nil
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or __python_alttags_beenthere[tag_type] == nil
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or __python_alttags_beenthere[tag_type][name .. ' ' .. evr] == nil then
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return __python_alttags(name, evr, tag_type)
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else
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return nil
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end
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end
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-- Like python_altprovides but only return something once.
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-- For each argument can only be used once, returns nil otherwise.
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-- Previous usage of python_altprovides counts as well.
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local function python_altprovides_once(name, evr)
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return __python_alttags_once(name, evr, "provides")
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end
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-- Like python_altobsoletes but only return something once.
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-- For each argument can only be used once, returns nil otherwise.
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-- Previous usage of python_altobsoletes counts as well.
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local function python_altobsoletes_once(name, evr)
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return __python_alttags_once(name, evr, "obsoletes")
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end
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return {
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python_altnames = python_altnames,
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python_altprovides = python_altprovides,
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python_altobsoletes = python_altobsoletes,
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python_altprovides_once = python_altprovides_once,
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python_altobsoletes_once = python_altobsoletes_once,
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}
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