# Copyright (c) 2015-2018 Jakub Cajka <jcajka@redhat.com>,

#                         Jan Chaloupka <jchaloup@redhat.com>,

#                         Nicolas Mailhot <nim@fedoraproject.org>

# This file is distributed under the terms of GNU GPL license version 3, or

# any later version.

# This file contains macros for building projects in golang for packages

# with golang compiler or gcc-go compiler based on an architecture.

# Golang is primarly for primary architectures, gcc-go for secondary.

#

# This file provides only macros and must not use any other package except

# redhat-rpm-macros.

# Define arches for PA and SA

%golang_arches   %{ix86} x86_64 %{arm} aarch64 ppc64le s390x

%gccgo_arches    %{mips}

%go_arches       %{golang_arches} %{gccgo_arches}

# Where to set GOPATH for builds

%gopath          %{_datadir}/gocode

# Define go_compilers macro to signal go-compiler package is available

%go_compiler     1

# Sanitize a Go import path that can then serve as rpm package name

# Mandatory parameter: a Go import path

%gorpmname() %{lua:

local goname = rpm.expand("%1")

-- add a golang prefix and lowercase

goname       = string.lower("golang-" .. goname .. "/")

-- replace various separators rpm does not like with -

-- special-case x.y.z number-strings as that’s an exception in our naming

-- guidelines

goname       = string.gsub(goname, "^([^/]+)%.([^%./]+)/", "%1/")

goname       = string.gsub(goname, "(%d)%.(%d)",           "%1|%2")

goname       = string.gsub(goname, "[%._/%-]+",            "-")

-- Tokenize along - separators and remove duplicates to avoid

-- golang-foo-foo-bar-foo names

local result = ""

local tokens = {}

tokens["go"]     = true

tokens["git"]    = true

for token in string.gmatch(goname, "[^%-]+") do

   if not tokens[token] then

      result = result .. "-" .. token

      tokens[token] = true

   end

end

-- reassemble the string, restore x.y.z runs, convert the vx.y.z

-- Go convention to x.y.z as prefered in rpm naming

result = string.gsub(result, "^-", "")

result = string.gsub(result, "|", ".")

result = string.gsub(result, "%-v([%.%d])", "%1")

print(result)

}

# Map Go information to rpm metadata. This macro will compute default spec

# variable values.

#

# The following spec variable MUST be set before calling the macro:

#

#   goipath   the packaged Go project import path

#

# The following spec variables SHOULD be set before calling the macro:

#

#   forgeurl  the project url on the forge, strongly recommended, if it can not

#             be deduced from goipath; alternatively, use -u <url>

#   Version   if applicable, set it with Version: <version>

#   tag       if applicable

#   commit    if applicable

#

# The macro will attempt to compute and set the following variables if they are

# not already set by the packager:

#

#   goname         an rpm-compatible package name derived from goipath

#   gosource       an URL that can be used as SourceX: value

#   gourl          an URL that can be used as URL: value

#

# It will delegate processing to the forgemeta macro for:

#

#   forgesource    an URL that can be used as SourceX: value

#   forgesetupargs the correct arguments to pass to %setup for this source

#                  used by %forgesetup and %forgeautosetup

#   archivename    the source archive filename, without extentions

#   archiveext     the source archive filename extensions, without leading dot

#   archiveurl     the url that can be used to download the source archive,

#                  without renaming

#   scm            the scm type, when packaging code snapshots: commits or tags

#

# If the macro is unable to parse your forgeurl value set at least archivename

# and archiveurl before calling it.

#

# Most of the computed variables are both overridable and optional. However,

# the macro WILL REDEFINE %{dist} when packaging a snapshot (commit or tag).

# The previous %{dist} value will be lost. Don’t call the macro if you don’t

# wish %{dist} to be changed.

#

# Optional parameters:

#   -u <url>  Ignore forgeurl even if it exists and use <url> instead. Note

#             that the macro will still end up setting <url> as the forgeurl

#             spec variable if it manages to parse it.

#   -s  Silently ignore problems in forgeurl, use it if it can be parsed,

#       ignore it otherwise.

#   -p  Restore problem handling, override -s.

#   -v  Be verbose and print every spec variable the macro sets.

#   -i  Print some info about the state of spec variables the macro may use or

#       set at the end of the processing.

%gometa(u:spvi) %{expand:%{lua:

local forgeurl    = rpm.expand("%{?-u*}")

if (forgeurl == "") then

  forgeurl        = rpm.expand("%{?forgeurl}")

end

-- Be explicit about the spec variables we’re setting

local function explicitset(rpmvariable,value)

  rpm.define(rpmvariable .. " " .. value)

  if (rpm.expand("%{?-v}") ~= "") then

    rpm.expand("%{echo:Setting %%{" .. rpmvariable .. "} = " .. value .. "}")

  end

end

-- Never ever stomp on a spec variable the packager already set

local function safeset(rpmvariable,value)

  if (rpm.expand("%{?" .. rpmvariable .. "}") == "") then

    explicitset(rpmvariable,value)

  end

end

-- All the Go packaging automation relies on goipath being set

local goipath = rpm.expand("%{?goipath}")

if (goipath == "") then

  rpm.expand("%{error:Please set the Go import path in the “goipath” variable before calling “gometa”!}")

end

-- Compute and set spec variables

if (forgeurl ~= "") then

  rpm.expand("%forgemeta %{?-v} %{?-i} %{?-s} %{?-p} -u " .. forgeurl .. "\\n")

  safeset("gourl", forgeurl)

else

  safeset("gourl", "https://" .. goipath)

  rpm.expand("%forgemeta %{?-v} %{?-i} -s     %{?-p} -u %{gourl}\\n")

end

if (rpm.expand("%{?forgesource}") ~= "") then

  safeset("gosource", "%{forgesource}")

else

  safeset("gosource", "%{gourl}/%{archivename}.%{archiveext}")

end

safeset("goname", "%gorpmname %{goipath}")

-- Final spec variable summary if the macro was called with -i

if (rpm.expand("%{?-i}") ~= "") then

  rpm.expand("%{echo:Go-specific packaging variables}")

  rpm.expand("%{echo:  goipath:         %{?goipath}}")

  rpm.expand("%{echo:  goname:          %{?goname}}")

  rpm.expand("%{echo:  gourl:           %{?gourl}}")

  rpm.expand("%{echo:  gosource:        %{?gosource}}")

end}

BuildRequires: go-rpm-macros

ExclusiveArch: %{go_arches}

}