refactor to use provider

Use `XcodeProjAutomaticTargetProcessingInfo` to fetch codesign flags

Author: maxwellE

test/fixtures/command_line/bwb_spec.json

@@ -592,6 +592,10 @@
             "build_settings": {
                 "GCC_OPTIMIZATION_LEVEL": "0",
                 "MACOSX_DEPLOYMENT_TARGET": "11.0",
+                "OTHER_CODE_SIGN_FLAGS": [
+                    "--digest-algorithm=sha1",
+                    "--digest-algorithm=sha384"
+                ],
                 "OTHER_LDFLAGS": [
                     "-ObjC"
                 ],

test/fixtures/command_line/bwx_spec.json

@@ -553,6 +553,10 @@
             "build_settings": {
                 "GCC_OPTIMIZATION_LEVEL": "0",
                 "MACOSX_DEPLOYMENT_TARGET": "11.0",
+                "OTHER_CODE_SIGN_FLAGS": [
+                    "--digest-algorithm=sha1",
+                    "--digest-algorithm=sha384"
+                ],
                 "OTHER_LDFLAGS": [
                     "-ObjC"
                 ],

xcodeproj/internal/default_input_file_attributes_aspect.bzl

@@ -109,6 +109,7 @@ def _default_input_file_attributes_aspect_impl(target, ctx):
 
     return [
         XcodeProjAutomaticTargetProcessingInfo(
+            codesignopts = "codesignopts",
             should_generate_target = should_generate_target,
             target_type = this_target_type,
             xcode_targets = xcode_targets,

xcodeproj/internal/providers.bzl

@@ -19,6 +19,9 @@ return a `XcodeProjInfo` provider instance instead.
     fields = {
         "bundle_id": """\
 An attribute name (or `None`) to collect the bundle id string from.
+""",
+        "codesignopts": """\
+A `list` of code sign options.
 """,
         "entitlements": """\
 An attribute name (or `None`) to collect `File`s from for the

xcodeproj/internal/target_properties.bzl

@@ -102,6 +102,19 @@ def process_modulemaps(*, swift_info):
         files = uniq(modulemap_files),
     )
 
+def process_codesignopts(*, codesignopts, build_settings):
+    """Logic for processing code signing flags.
+
+    Args:
+        codesignopts: A `list` of code sign options
+        build_settings: A mutable `dict` that will be updated with code signing
+            flag build settings that are processed.
+    Return:
+        The modified build settings object
+    """
+    if codesignopts and build_settings != None:
+        set_if_true(build_settings, "OTHER_CODE_SIGN_FLAGS", codesignopts)
+
 def process_defines(*, cc_info, swift_info, build_settings):
     """ Logic for processing defines of a module