INI configuration parser for XTLDR

ExectOS.code-workspace

@@ -20,5 +20,8 @@
 			}
 		},
 		"terminal.integrated.defaultProfile.linux": "xtchain",
+		"files.associations": {
+			"globals.h": "c"
+		},
 	}
 }

sdk/xtdk/bmtypes.h

@@ -11,6 +11,19 @@
 
 #include <xttypes.h>
 
+typedef struct _XTBL_INI_SECTION
+{
+    LIST_ENTRY Flink;
+    LIST_ENTRY Options;
+    PWCHAR SectionName;
+} XTBL_INI_SECTION, *PXTBL_INI_SECTION;
+
+typedef struct _XTBL_INI_OPTION
+{
+    LIST_ENTRY Flink;
+    PWCHAR Name;
+    PWCHAR Value;
+} XTBL_INI_OPTION, *PXTBL_INI_OPTION;
 
 /* XTLDR configuration data */
 typedef struct _XTBM_CONFIGURATION

xtldr2/config.c

@@ -4,10 +4,115 @@
  * FILE:            xtldr/config.c
  * DESCRIPTION:     XT Boot Loader Configuration
  * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ *                  Jozef Nagy <schkwve@gmail.com>
  */
 
 #include <xtbm.h>
 
+/**
+ * Parses configuration INI file contents.
+ * 
+ * @param FileContents
+ *        Supplies a pointer to a wide string containing contents of the configuration file.
+ * 
+ * @param Sections
+ *        Supplies a pointer to a linked list which will be written by this routine.
+ * 
+ * @return This routine returns a status code.
+ * 
+ * @since XT 1.0
+ */
+XTCDECL
+XTSTATUS
+BlConfigParseIniFile(IN PWCHAR FileContents,
+                     OUT PLIST_ENTRY Sections)
+{
+    PWCHAR Argument, LastArg, CurrentSectionName;
+    SIZE_T Length;
+
+    /* Set a default section name */
+    CurrentSectionName = L"Unknown";
+
+    /* Tokenize provided options */
+    Argument = RtlWideStringTokenize(FileContents, L"\r\n", &LastArg);
+
+    /* Iterate over all arguments passed to boot loader */
+    while(Argument != NULL)
+    {
+        /* Check every line */
+        if(RtlWideStringCompare(Argument, L"[", 1) == 0)
+        {
+            /* Skip to the section name */
+            Argument += 1;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Everything until ']' belongs to the section's name */
+            // CurrentSectionName = RtlWideStringTokenize(Argument, L"]", &LastArg);
+            BlConsolePrint(L"New section: %S\n", CurrentSectionName);
+        }
+        else if(RtlWideStringCompare(Argument, L"Default=", 8) == 0)
+        {
+            /* Skip to the argument value and calculate argument length */
+            Argument += 8;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Set a default section */
+            BlConsolePrint(L"Setting DEFAULT value to %S\n", Argument);
+        }
+        else if(RtlWideStringCompare(Argument, L"Debug=", 6) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 6;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Set a debug port and baud rate */
+            BlConsolePrint(L"Setting DEBUG value to %S\n", Argument);
+        }
+        else if(RtlWideStringCompare(Argument, L"Theme=", 6) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 6;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Set a theme name */
+            BlConsolePrint(L"Setting THEME value to %S\n", Argument);
+        }
+        else if(RtlWideStringCompare(Argument, L"Timeout=", 8) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 8;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Set a timeout */
+            BlConsolePrint(L"Setting TIMEOUT value to %S\n", Argument);
+        }
+        else if(RtlWideStringCompare(Argument, L"Tune=", 5) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 5;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Set a tune */
+            BlConsolePrint(L"Setting TUNE value to %S\n", Argument);
+        }
+        else if(RtlWideStringCompare(Argument, L"#", 1) == 0)
+        {
+            /* We can safely ignore a comment */
+            Argument += 1;
+        }
+        else
+        {
+            /* Configuration file might be corrupt */
+            BlConsolePrint(L"Unknown argument: %S\n", Argument);
+            return STATUS_INVALID_PARAMETER;
+        }
+
+        /* Take next argument */
+        Argument = RtlWideStringTokenize(NULL, L"\n", &LastArg);
+    }
+
+    return STATUS_SUCCESS;
+}
 
 /**
  * Parses command line arguments and updates global configuration.

xtldr2/includes/bootman.h

@@ -79,6 +79,11 @@ BlpStringFormat(IN BMPRINTCHAR PrintCharRoutine,
                 IN PUINT16 Format,
                 IN ...);
 
+XTCDECL
+XTSTATUS
+BlConfigParseIniFile(IN PWCHAR FileContents,
+                     OUT PLIST_ENTRY Sections);
+
 XTCDECL
 VOID
 BlpConfigParseCommandLine(VOID);

xtldr2/xtldr.c

@@ -28,15 +28,22 @@ BlStartXtLoader(IN EFI_HANDLE ImageHandle,
                 IN PEFI_SYSTEM_TABLE SystemTable)
 {
     EFI_STATUS Status;
+    LIST_ENTRY ConfigSections;
 
     /* Set the system table and image handle */
     EfiImageHandle = ImageHandle;
     EfiSystemTable = SystemTable;
 
+
+    RtlInitializeListHead(&ConfigSections);
+
     /* Initialize UEFI console and early print XTLDR version */
     BlConsoleInitialize();
     BlConsolePrint(L"XTLDR boot loader v%s\n", XTOS_VERSION);
 
+    /* Parse INI Configuration file */
+    BlConfigParseIniFile(L"# This is the XT Boot Loader (XTLDR) configuration file. It follows an INI format and is divided into sections, which\r\n# contain a properties. Each property has a name and value delimited by an equal (=) character. Comments must start\r\n# with a semicolon (;) or a hash character (#) and run to the end of the line.\r\n#\r\n# Basic section is [XTLDR] which contains a bootloader specific options:\r\n# Debug        - enables the debugging port and consists of two comma-separated parameters: com port and baud rate;\r\n#                it is also possible to specify custom port address with: COM0:[address],[baud_rate]\r\n# Default      - specifies which operating system listen in config file will be started if no choice is made\r\n# Theme        - allows to set a custom theme to personalize XTLDR's look'n'feel\r\n# Timeout      - sets the countdown timer (in seconds) before the default OS get started automatically\r\n# Tune         - plays a tune on the pcspeaker right before the XTLDR loads\r\n#\r\n# Another type of section is [OS-Section] which adds a new position (operating system) to the boot menu. Each type\r\n# of the operating system provides a set of available parameters. If unsupported option is added, it is being ignored\r\n# by the XT Boot Loader. The available options are:\r\n# SystemName   - sets a long operating system name that will be shown on the boot menu\r\n# SystemType   - specifies an OS type from a predefined list of supported boot protocols\r\n# SystemPath   - the ARC path, eg. multi(0)disk(0)rdisk(0)partition(1)\r\n# KernelFile   - sets kernel filename with optional path relative to SystemPath\r\n# InitrdFile   - sets initramfs image filename with optional path relative to SystemPath\r\n# HalFile      - sets HAL filename with optional path relative to SystemPath\r\n# Parameters   - specifies extra boot options for the kernel\r\n[XTLDR]Tune=400 880 2 988 2 783 2 392 2 587 3Debug=COM1,115200Timeout=30Theme=FancyDefault=ExectOS[ExectOS]SystemName=\"ExectOS Operating System\"SystemType=XTOSSystemPath=multi(0)disk(0)rdisk(0)partition(1)/ExectOSKernelFile=xtoskrnl.exeParameters=DEBUG DEBUGPORT=COM1,115200[Windows]SystemName=\"Microsoft Windows 2000\"SystemType=NT50SystemPath=multi(0)disk(0)rdisk(0)partition(2)/WindowsKernelFile=ntoskrnl.exeHalFile=hal.dllParameters=/NOGUIBOOT /MININT[Linux]SystemName=\"GNU/Linux\"SystemType=LINUXSystemPath=multi(0)disk(0)rdisk(0)partition(3)/bootKernelFile=vmlinuzInitrdFile=initramfs.cpio.gzParameters=root=/dev/xvda3 rootfstype=ext4", &ConfigSections);
+
     /* Temporary infinite loop */
     for(;;);