meson: specify project version with the -dev and -rc suffixes

This will create the tarball with names NetworkManager-1.56-rc2.tar.xz
or NetworkManager-1.57.1-dev.tar.xz. This way they will match with the
name of the Git tag, making easier for users, and specially for tools
like Packit, to understand the versioning scheme.

The goal is to make that there is only one public versioning scheme, the
one with -rc and -dev suffixes. Version numbers with micro>=90 for RC
releases is kept only as an internal thing for the C headers. Users of
the API can still use it.

Bump meson version to 0.56 to use str.substring().

meson.build

@@ -5,23 +5,48 @@ project(
 # NOTE: When incrementing version also add corresponding
 #       NM_VERSION_x_y_z macros in
 #       "src/libnm-core-public/nm-version-macros.h.in"
-  version: '1.57.1',
+  version: '1.57.1-dev',
   license: 'GPL2+',
   default_options: [
     'buildtype=debugoptimized',
     'c_std=gnu11',
     'warning_level=2' # value "2" will add "-Wall" and "-Wextra" to the compiler flags
   ],
-  meson_version: '>= 0.53.0',
+  meson_version: '>= 0.56.0',
 )
 
 nm_name = meson.project_name()
-
 nm_version = meson.project_version()
-version_array = nm_version.split('.')
-nm_major_version = version_array[0].to_int()
-nm_minor_version = version_array[1].to_int()
-nm_micro_version = version_array[2].to_int()
+
+version_and_suffix = nm_version.split('-')
+version_array = version_and_suffix[0].split('.')
+if version_and_suffix.length() == 2
+  version_suffix = version_and_suffix[1]
+else
+  assert(version_and_suffix.length() == 1)
+  version_suffix = ''
+endif
+
+# In the C API we encode the version in 90+ scheme (1.56-rc1 = 1.55.90, rc2 = .91, etc)
+if version_suffix == '' or version_suffix == 'dev'
+  assert(version_array.length() == 3)
+  nm_major_version = version_array[0].to_int()
+  nm_minor_version = version_array[1].to_int()
+  nm_micro_version = version_array[2].to_int()
+elif version_suffix.startswith('rc')
+  assert(version_array.length() == 2)
+  nm_major_version = version_array[0].to_int()
+  nm_minor_version = version_array[1].to_int() - 1
+  nm_micro_version = version_suffix.substring(2).to_int() + 89
+else
+  error('Invalid suffix: ' + version_suffix)
+endif
+
+if nm_minor_version % 2 == 1 and version_suffix == ''
+  error('Expected a "-dev" or "-rc" suffix')
+elif nm_minor_version %2 == 0 and version_suffix != ''
+  error('Unexpected "' + version_suffix + '" suffix')
+endif
 
 nm_id_prefix = 'NM'
 

src/tests/client/test-client.py

@@ -688,7 +688,17 @@ class Util:
         micro = ver & 0xFF
         minor = (ver >> 8) & 0xFF
         major = ver >> 16
-        return "%s.%s.%s" % (major, minor, micro)
+
+        # Convert 1.57.1 -> 1.57.1-dev and 1.55.90 -> 1.56-rc1
+        if micro >= 90:
+            minor += 1
+            micro = "-rc" + str(micro - 89)
+        elif minor % 2 == 1:
+            micro = f".{micro}-dev"
+        else:
+            micro = f".{micro}"
+
+        return "%s.%s%s" % (major, minor, micro)
 
 
 ###############################################################################
@@ -3264,7 +3274,7 @@ def main():
                     sys.executable,
                     __file__,
                     "--started-with-dbus-session",
-                    *sys.argv[1:]
+                    *sys.argv[1:],
                 )
             except OSError as e:
                 if e.errno != errno.ENOENT: