145 lines
6.5 KiB
Text
145 lines
6.5 KiB
Text
/**
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* Since Nix does not have a standard location like /usr/share where GSettings system
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* could look for schemas, we need to point the software to a correct location somehow.
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* For executables, we handle this using wrappers but this is not an option for libraries like e-d-s.
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* Instead, we patch the source code to look for the schema in a schema source
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* through a hardcoded path to the schema.
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*
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* For each schema id referenced in the source code (e.g. org.gnome.evolution),
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* a variable name such as `EVOLUTION` must be provided in the ./glib-schema-to-var.json JSON file.
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* It will end up in the resulting patch as `@EVOLUTION@` placeholder, which should be replaced at build time
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* with a path to the directory containing a `gschemas.compiled` file that includes the schema.
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*/
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@initialize:python@
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@@
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import json
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cpp_constants = {}
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def register_cpp_constant(const_name, val):
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cpp_constants[const_name] = val.strip()
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def resolve_cpp_constant(const_name):
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return cpp_constants.get(const_name, const_name)
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with open("./glib-schema-to-var.json") as mapping_file:
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schema_to_var = json.load(mapping_file);
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def get_schema_directory(schema_id):
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# Sometimes the schema id is referenced using C preprocessor #define constant in the same file
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# let’s try to resolve it first.
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schema_id = resolve_cpp_constant(schema_id.strip()).strip('"')
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if schema_id in schema_to_var:
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return f'"@{schema_to_var[schema_id]}@"'
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raise Exception(f"Unknown schema path {schema_id!r}, please add it to ./glib-schema-to-var.json")
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@find_cpp_constants@
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identifier const_name;
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expression val;
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@@
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#define const_name val
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@script:python record_cpp_constants depends on find_cpp_constants@
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const_name << find_cpp_constants.const_name;
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val << find_cpp_constants.val;
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@@
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register_cpp_constant(const_name, val)
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@depends on ever record_cpp_constants || never record_cpp_constants@
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// We want to run after #define constants have been collected but even if there are no #defines.
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expression SCHEMA_ID;
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expression settings;
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// Coccinelle does not like autocleanup macros in + sections,
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// let’s use fresh id with concatenation to produce the code as a string.
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fresh identifier schema_source_decl = "g_autoptr(GSettingsSchemaSource) " ## "schema_source";
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fresh identifier schema_decl = "g_autoptr(GSettingsSchema) " ## "schema";
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fresh identifier SCHEMA_DIRECTORY = script:python(SCHEMA_ID) { get_schema_directory(SCHEMA_ID) };
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@@
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-settings = g_settings_new(SCHEMA_ID);
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+{
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+ schema_source_decl;
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+ schema_decl;
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+ schema_source = g_settings_schema_source_new_from_directory(SCHEMA_DIRECTORY,
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+ g_settings_schema_source_get_default(),
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+ TRUE,
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+ NULL);
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+ schema = g_settings_schema_source_lookup(schema_source, SCHEMA_ID, FALSE);
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+ settings = g_settings_new_full(schema, NULL, NULL);
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+}
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@depends on ever record_cpp_constants || never record_cpp_constants@
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// We want to run after #define constants have been collected but even if there are no #defines.
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expression SCHEMA_ID;
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expression settings;
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expression BACKEND;
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// Coccinelle does not like autocleanup macros in + sections,
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// let’s use fresh id with concatenation to produce the code as a string.
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fresh identifier schema_source_decl = "g_autoptr(GSettingsSchemaSource) " ## "schema_source";
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fresh identifier schema_decl = "g_autoptr(GSettingsSchema) " ## "schema";
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fresh identifier SCHEMA_DIRECTORY = script:python(SCHEMA_ID) { get_schema_directory(SCHEMA_ID) };
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@@
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-settings = g_settings_new_with_backend(SCHEMA_ID, BACKEND);
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+{
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+ schema_source_decl;
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+ schema_decl;
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+ schema_source = g_settings_schema_source_new_from_directory(SCHEMA_DIRECTORY,
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+ g_settings_schema_source_get_default(),
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+ TRUE,
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+ NULL);
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+ schema = g_settings_schema_source_lookup(schema_source, SCHEMA_ID, FALSE);
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+ settings = g_settings_new_full(schema, BACKEND, NULL);
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+}
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@depends on ever record_cpp_constants || never record_cpp_constants@
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// We want to run after #define constants have been collected but even if there are no #defines.
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expression SCHEMA_ID;
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expression settings;
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expression BACKEND;
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expression PATH;
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// Coccinelle does not like autocleanup macros in + sections,
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// let’s use fresh id with concatenation to produce the code as a string.
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fresh identifier schema_source_decl = "g_autoptr(GSettingsSchemaSource) " ## "schema_source";
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fresh identifier schema_decl = "g_autoptr(GSettingsSchema) " ## "schema";
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fresh identifier SCHEMA_DIRECTORY = script:python(SCHEMA_ID) { get_schema_directory(SCHEMA_ID) };
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@@
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-settings = g_settings_new_with_backend_and_path(SCHEMA_ID, BACKEND, PATH);
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+{
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+ schema_source_decl;
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+ schema_decl;
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+ schema_source = g_settings_schema_source_new_from_directory(SCHEMA_DIRECTORY,
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+ g_settings_schema_source_get_default(),
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+ TRUE,
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+ NULL);
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+ schema = g_settings_schema_source_lookup(schema_source, SCHEMA_ID, FALSE);
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+ settings = g_settings_new_full(schema, BACKEND, PATH);
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+}
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@depends on ever record_cpp_constants || never record_cpp_constants@
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// We want to run after #define constants have been collected but even if there are no #defines.
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expression SCHEMA_ID;
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expression settings;
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expression PATH;
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// Coccinelle does not like autocleanup macros in + sections,
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// let’s use fresh id with concatenation to produce the code as a string.
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fresh identifier schema_source_decl = "g_autoptr(GSettingsSchemaSource) " ## "schema_source";
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fresh identifier schema_decl = "g_autoptr(GSettingsSchema) " ## "schema";
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fresh identifier SCHEMA_DIRECTORY = script:python(SCHEMA_ID) { get_schema_directory(SCHEMA_ID) };
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@@
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-settings = g_settings_new_with_path(SCHEMA_ID, PATH);
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+{
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+ schema_source_decl;
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+ schema_decl;
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+ schema_source = g_settings_schema_source_new_from_directory(SCHEMA_DIRECTORY,
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+ g_settings_schema_source_get_default(),
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+ TRUE,
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+ NULL);
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+ schema = g_settings_schema_source_lookup(schema_source, SCHEMA_ID, FALSE);
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+ settings = g_settings_new_full(schema, NULL, PATH);
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+}
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