init commit

Author: daulet-turgaliev-hg

commitinfo

@@ -0,0 +1 @@
+7fc9f61f7badb3e37205316c9d6476aff612c71d

ext.manifest

@@ -0,0 +1 @@
+name: "GitCommit"

gitrevision.lua

@@ -0,0 +1,57 @@
+local log = require("hg.log")
+
+local M = {}
+
+local COMMIT_INFO_PATH = "gitcommit/commitinfo"
+local REVISION_LENGTH = 10
+
+local function read_commit_hash()
+	local file, open_error = io.open(COMMIT_INFO_PATH, "r")
+
+	if not file then
+		log.debug(
+			string.format(
+				"WARNING: Failed to open commit information file: %s (%s)",
+				COMMIT_INFO_PATH,
+				open_error or "unknown error"
+			)
+		)
+		return nil
+	end
+
+	local revision = file:read("*l")
+	file:close()
+
+	if not revision or revision == "" then
+		log.debug("WARNING: Commit information file is empty or unreadable: " .. COMMIT_INFO_PATH)
+		return nil
+	end
+
+	return revision:sub(1, REVISION_LENGTH)
+end
+
+function M.apply_revision_override()
+	local revision = read_commit_hash()
+
+	if not revision then
+		log.debug("INFO: project.revision override will not be applied.")
+		return
+	end
+
+	log.debug("INFO: Detected commit hash: " .. revision .. ". Overriding sys.get_config.")
+
+	local original_get_config = sys.get_config
+
+	sys.get_config = function(key, default_value)
+		if key == "project.revision" then
+			return revision
+		end
+		return original_get_config(key, default_value)
+	end
+
+	log.debug(
+		"INFO: sys.get_config successfully overridden. project.revision is now: " .. sys.get_config("project.revision")
+	)
+end
+
+return M

src/gitcommit.c

@@ -0,0 +1,79 @@
+#define LIB_NAME    "GitCommit"
+#define MODULE_NAME "gitcommit"
+
+#include <dmsdk/sdk.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+static char s_commit_hash[11] = {0};
+static const char* COMMIT_FILE_PATH = "gitcommit/commitinfo";
+
+static void RetrieveGitCommit() {
+#if !defined(_WIN32) && !defined(_WIN64)
+    system("mkdir -p gitcommit");
+#endif
+    char cmd[256];
+#if defined(_WIN32) || defined(_WIN64)
+    snprintf(cmd, sizeof(cmd),
+        "git rev-parse HEAD > \"%s\" 2>nul",
+        COMMIT_FILE_PATH);
+#else
+    snprintf(cmd, sizeof(cmd),
+        "git rev-parse HEAD > \"%s\" 2>/dev/null",
+        COMMIT_FILE_PATH);
+#endif
+
+    system(cmd);
+
+    FILE* file = fopen(COMMIT_FILE_PATH, "r");
+    if (!file) {
+        return;
+    }
+    if (fgets(s_commit_hash, sizeof(s_commit_hash), file)) {
+        char* nl = strchr(s_commit_hash, '\n');
+        if (nl) *nl = '\0';
+    }
+    fclose(file);
+}
+
+static int LuaGetCommit(lua_State* L) {
+    DM_LUA_STACK_CHECK(L, 1);
+    lua_pushstring(L, s_commit_hash);
+    return 1;
+}
+
+static const luaL_Reg Module_methods[] = {
+    {"get_commit", LuaGetCommit},
+    {0,0}
+};
+
+static void LuaInit(lua_State* L) {
+    int top = lua_gettop(L);
+    luaL_register(L, MODULE_NAME, Module_methods);
+    lua_pop(L, 1);
+    assert(top == lua_gettop(L));
+}
+
+dmExtension::Result AppInitializeGitCommit(dmExtension::AppParams*) {
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result InitializeGitCommit(dmExtension::Params* params) {
+    RetrieveGitCommit();
+    LuaInit(params->m_L);
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result AppFinalizeGitCommit(dmExtension::AppParams*) {
+    return dmExtension::RESULT_OK;
+}
+
+dmExtension::Result FinalizeGitCommit(dmExtension::Params*) {
+    return dmExtension::RESULT_OK;
+}
+
+DM_DECLARE_EXTENSION(GitCommit, LIB_NAME,
+                     AppInitializeGitCommit, AppFinalizeGitCommit,
+                     InitializeGitCommit, 0, 0, FinalizeGitCommit)