300 lines
11 KiB
Plaintext
300 lines
11 KiB
Plaintext
Release 1.1.5 of wrc (12-Jun-2000), the wine resource compiler.
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See the file CHANGES for differences between the version and what has been
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corrected in the current version.
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Wrc features:
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- full source preprocessing
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- 16 and 32 bit support
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- LANGUAGE support (32 bit only)
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- most resource types are supported
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- enhanced expression capabilities and resource naming
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- indirect loadable resources
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- NE/PE resource directory generation
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- binary .res file generation/reading
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- byte-order conversions
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Wrc generates an assembly file that can be assembled with GNU's gas, or
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passed to gcc. The assembly became necessary for two reasons. First, C does
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not ensure relative position of declared data. Secondly, C complaints about
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complex initialization schemes that became necessary with the NE/PE
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directory generation.
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Wrc command-line
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----------------
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You can get this message by typing 'wrc -?':
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Usage: wrc [options...] [infile[.rc|.res]]
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-a n Alignment of resource (win16 only, default is 4)
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-A Auto register resources (only with gcc 2.7 and better)
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-b Create a C array from a binary .res file
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-c Add 'const' prefix to C constants
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-C cp Set the resource's codepage to cp (default is 0)
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-d n Set debug level to 'n'
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-D id[=val] Define preprocessor identifier id=val
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-e Disable recognition of win32 keywords in 16bit compile
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-E Preprocess only
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-g Add symbols to the global c namespace
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-h Also generate a .h file
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-H file Same as -h but written to file
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-I path Set include search dir to path (multiple -I allowed)
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-l lan Set default language to lan (default is neutral {0, 0})
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-L Leave case of embedded filenames as is
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-m Do not remap numerical resource IDs
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-n Do not generate .s file
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-N Do not preprocess input
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-o file Output to file (default is infile.[res|s|h]
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-p prefix Give a prefix for the generated names
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-r Create binary .res file (compile only)
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-s Add structure with win32/16 (PE/NE) resource directory
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-t Generate indirect loadable resource tables
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-T Generate only indirect loadable resources tables
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-V Print version end exit
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-w 16|32 Select win16 or win32 output (default is win32)
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-W Enable pedantic warnings
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Input is taken from stdin if no sourcefile specified.
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Debug level 'n' is a bitmask with following meaning:
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* 0x01 Tell which resource is parsed (verbose mode)
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* 0x02 Dump internal structures
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* 0x04 Create a parser trace (yydebug=1)
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* 0x08 Preprocessor messages
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* 0x10 Preprocessor lex messages
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* 0x20 Preprocessor yacc trace
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The -o option only applies to the final destination file, which is
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in case of normal compile a .s file. You must use the '-H header.h'
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option to override the header-filename.
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If no input filename is given and the output name is not overridden
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with -o and/or -H, then the output is written to "wrc.tab.[sh]"
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For more info see the wrc manpage.
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Preprocessing
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-------------
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The preprocessor is a fully operational C preprocessor. It handles all
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directives supported by ANSI-C. It also includes some additions from
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gcc/egcs.
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Wrc understands these directives:
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#define (both simple and macro)
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#undef
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#if
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#ifdef
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#ifndef
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#elif
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#else
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#endif
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#error
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#warning
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#line
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#
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#pragma (ignored)
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#ident (ignored)
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The extensions include '#'-line directives.
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Not handled at the moment are variable argument macros. They are parsed,
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but not expanded properly. This will be corrected in the future.
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The preprocessor handles the special defines and aditionally defines an
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extra set of defines:
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Define | Value | Comment
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-----------+-------------------+---------------
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RC_INVOKED | 1 | Always defined
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__FLAT__ | 1 | Only defined if win32 compile
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__WIN32__ | 1 | Only defined if win32 compile
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__FILE__ | "..." | Current filename as string
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__LINE__ | nnn | Current linenumber as integer
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__TIME__ | "23:59:59" | Timestring of compilation
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__DATE__ | "May 1 2000" | Datestring of compilation
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__WRC__ <20>1 | Wrc's major version
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__WRC_MINOR__ | 1 | Wrc's minor version
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__WRC_MICRO__ | 0 | Wrc's minor version
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__WRC_PATCH__ | 0 | Alias of __WRC_MICRO__
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Include-files are not read twice if they are protected with this scheme:
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#ifndef SOME_DEFINE
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#define SOME_DEFINE
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...
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#endif
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This strategy has been borrowed from gcc/egcs and results in significantly
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reduced preprocessing times (20..30%). There must not be any junk before
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the first #ifndef and not after the last #endif; comments and whitespace
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excepted. Wrc will check the existance of the define prior to inclusion to
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detect "#undef SOME_DEFINE" (notably poppack.h) and act accordingly.
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16 and 32 bit support
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---------------------
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All of wrc is layed out in such a way that it enables compilation of both 16
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and 32 bit resources. They mainly differ in code-generation and extra
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keywords. Win32 keywords are recognized by default in 16 bit compile. You
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can disable recognition of win32 reserved keywords by using the '-e' option,
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if you encounter .rc-files that use win32 reserved keywords (I strongly
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recommend that you just rename things in the source).
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Language support
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----------------
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Wrc also understands the LANGUAGE keyword (win32 only) for both global and
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local definitions of language. There are differences with respect to MS' and
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Borland's implementation. Wrc uses 0,0 as the default language if non is
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specified. Both MS and Borland use the language of the system that the
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compiler runs on.
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Language, version and characteristics can be bound to all resource types that
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have inline data, such as RCDATA. This is an extension to MS' resource
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compiler, which lacks this support completely. Only VERSIONINFO cannot have
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version and characteristics attached, but languages are propagated properly if
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you declare it correctly before the VERSIONINFO resource starts.
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Example:
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1 RCDATA DISCARDABLE
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LANGUAGE 1, 0
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VERSION 312
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CHARACTERISTICS 876
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{
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1, 2, 3, 4, 5, "and whatever more data you want"
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'00 01 02 03 04 05 06 07 08'
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}
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Resource types supported
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------------------------
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All types are supported except for:
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- RT_VXD
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- RT_PLUGPLAY
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- RT_HTML
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- RT_DLGINCLUDE
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These types will be implemented as soon as I get a proper specification of
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the layout.
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Font type resources (RT_FONT, RT_FONTDIR) are partially supported and will
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be enhanced when I have the complete spec. The font resources work only if
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you supply the FONTDIR resource yourself.
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Expression capabilities and resource names
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------------------------------------------
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You can use an expression in most places where the resource definition
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expects a number (except usertype type). Operators supported:
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() parenthesis
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* multiply
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/ divide
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+ plus/add
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- minus/substract
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| binary or
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& binary and
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~ binary not (unary operator though)
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NOT ... (sigh)
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Plus (+) and minus (-) can both be unary and binary. The NOT operator is
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(primarily) used to disable window styles but I strongly suggest to refrain
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from using this operator.
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Resource names can be both numerical (expressions) and character typed. Wrc
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does support this insane (deep sigh) construct:
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MENU MENU
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{
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...
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}
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It is _ONLY_ supported for backwards compatibility so that old sources can
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be compiled with winelib. DO NOT USE IT IN NEW RESOURCES, PLEASE!
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Indirect loadable resources
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---------------------------
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Wrc can generate tables for indirect resource loading like winerc did. There
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are two new structures defined in 'wine-base-dir/include/wrc_rsc.h':
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typedef struct wrc_resource16
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{
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INT32 resid; /* The resource id if resname == NULL */
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LPSTR resname;
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INT32 restype; /* The resource type-id if typename == NULL */
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LPSTR typename;
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LPBYTE data; /* Actual resource data */
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UINT32 datasize; /* The size of the resource */
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} wrc_resource16_t;
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typedef struct wrc_resource32
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{
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INT32 resid; /* The resource id if resname == NULL */
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LPWSTR resname;
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INT32 restype; /* The resource type-id if typename == NULL */
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LPWSTR typename;
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LPBYTE data; /* Actual resource data */
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UINT32 datasize; /* The size of the resource */
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} wrc_resource32_t;
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The extension to winerc lies in the addition of the 'typename' field to
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support usertype resoursec with names for types.
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Note that _ALL_ names generated by wrc and to be used in interfacing with
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wine are PASCAL-style strings, unlike winerc. The first element contains the
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length and the strings are _not_ '\0'-terminated!
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You can also generate header files with wrc when specifying the '-h' or
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'-H<filename>' option.
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NE/PE resource directory generation
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-----------------------------------
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A windows executable has a table/directory of resources avalable in that
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module. Wrc will generate this directory with the '-s' option and place it
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in the assembly output (and header-file). This will enable the separation
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of different modules (dlls) in wine, which is the next project after wrc.
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The layout of the PE directory should be exactly like the executable file.
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The NE-directory layout _DIFFERS_ from the real NE-executable in such way
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that all offsets to actual resource-data is relative to the NE-directory and
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_NOT_ the beginning of the file.
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Binary .res file generation/reading
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-----------------------------------
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Wrc can both generate (32 and 16 bit) and read (32 bit only) .res-files.
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These can be used as intermediate files or binary files can be imported from
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other sources. The reading of 16 bit .res-files is on the list for the next
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release.
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You cannot convert 32 bit .res-files into 16 bit output or vice versa. I
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might implement 16 bit res into 32 bit output in the future, but I stronly
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oppose to the other way arround.
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Bugs
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----
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Inherent to programs you have bugs. These I know are there, plus a few
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things that I noted in the above text (more lack of implementation than bug
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though):
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- No codepage translation
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- UNICODE translations are not/not correct implemented
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- No documentation ('wrc -?' gives command-line options and a manpage)
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- grep for FIXME in the source
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- Memory options are wrong under some conditions. There seems to be a
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different action for win32 and win16
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- PUSHBOX control is unsupported. The MS docs use it plenty, but neither
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MS' nor Borland's compiler supports it.
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Reporting bugs and patches
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--------------------------
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Send problems to the wine newsgroup or, preferrably, directly to me at:
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bertho@akhphd.au.dk
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Please send the problematic rc-source with the bug so I can reproduce it.
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Patches should _not_ be send to Alexandre but to me. I will then review the
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change and send a full patch to be included into the new wine release (I
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prefer 'diff -u' format). You can always upload suggestions to wine
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headquarters, but be sure to send me a copy.
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