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| 2 | /*
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| 3 | *@@sourcefile resh.c:
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| 4 | * resh.c contains Resource helper functions.
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| 5 | *
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| 6 | * Function prefixes:
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| 7 | * -- resh* Resource helper functions
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| 8 | *
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| 9 | * These functions are forward-declared in resh.h, which
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| 10 | * must be #include'd first.
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| 11 | *
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| 12 | *@@header "helpers\resh.h"
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| 13 | *@@added V0.9.4 (2000-07-27) [umoeller]
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| 14 | */
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| 15 |
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| 16 | /*
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| 17 | * Copyright (C) 2000 Christoph Schulte Mnting.
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| 18 | *
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| 19 | * This program is free software; you can redistribute it and/or modify
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| 20 | * it under the terms of the GNU General Public License as published by
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| 21 | * the Free Software Foundation, in version 2 as it comes in the COPYING
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| 22 | * file of this distribution.
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| 23 | * This program is distributed in the hope that it will be useful,
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| 24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 26 | * GNU General Public License for more details.
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| 27 | */
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| 28 |
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| 29 | // OS2 includes
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| 30 |
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| 31 | #define OS2EMX_PLAIN_CHAR
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| 32 | // this is needed for "os2emx.h"; if this is defined,
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| 33 | // emx will define PSZ as _signed_ char, otherwise
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| 34 | // as unsigned char
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| 35 |
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| 36 | #define INCL_DOSMODULEMGR
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| 37 | #define INCL_DOSRESOURCES
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| 38 | #define INCL_DOSERRORS
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| 39 | #include <os2.h>
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| 40 |
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| 41 | #include "setup.h" // code generation and debugging options
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| 42 |
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| 43 | #include "helpers\resh.h"
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| 44 |
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| 45 | /*
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| 46 | *@@category: Helpers\Control program helpers\Resources
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| 47 | */
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| 48 |
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| 49 | /*
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| 50 | *@@ reshWriteResourceToFile:
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| 51 | * get the indicated resource from the current module (usually the
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| 52 | * executable) and write it to a file. If pulBytesWritten is not NULL,
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| 53 | * the number of written bytes is stored to that location.
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| 54 | *
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| 55 | * Returns:
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| 56 | * -- NO_ERROR: no error, resource successfully read and written.
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| 57 | * -- ERROR_INVALID_DATA: no. of bytes written != no. of bytes in
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| 58 | * resource. Shouldn't happen.
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| 59 | *
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| 60 | * plus the error codes from DosQueryResourceSize, DosOpen,
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| 61 | * DosGetResource, DosWrite.
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| 62 | *
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| 63 | * <B>Warning:</B> If the given file exists, it will be
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| 64 | * overwritten without asking for confirmation!
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| 65 | *
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| 66 | *@@added V0.9.4 [csm]
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| 67 | *@@changed V0.9.4 (2000-07-24) [umoeller]: added hmod, changed return values
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| 68 | */
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| 69 |
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| 70 | APIRET reshWriteResourceToFile(HMODULE hmod, // in: module handle or NULLHANDLE for current EXE
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| 71 | ULONG ulTypeID, // in: type of the resource
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| 72 | ULONG ulNameID, // in: ID of the resource
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| 73 | const char *pcszFilename, // in: name of file to write to
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| 74 | PULONG pulBytesWritten) // out: number of bytes written
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| 75 | {
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| 76 | ULONG arc = 0;
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| 77 | ULONG ulResourceSize;
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| 78 | ULONG ulBytesWritten = 0;
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| 79 |
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| 80 | arc = DosQueryResourceSize(hmod,
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| 81 | ulTypeID,
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| 82 | ulNameID,
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| 83 | &ulResourceSize);
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| 84 | if (arc == NO_ERROR)
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| 85 | {
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| 86 | PVOID pvResourceData;
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| 87 |
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| 88 | HFILE hFile;
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| 89 | ULONG ulAction = 0;
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| 90 |
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| 91 | // Open file for writing, replace if exists
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| 92 | arc = DosOpen((PSZ)pcszFilename,
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| 93 | &hFile,
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| 94 | &ulAction, // action taken
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| 95 | ulResourceSize, // primary allocation size
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| 96 | FILE_ARCHIVED | FILE_NORMAL, // file attribute
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| 97 | OPEN_ACTION_CREATE_IF_NEW
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| 98 | | OPEN_ACTION_REPLACE_IF_EXISTS, // open flags
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| 99 | OPEN_FLAGS_NOINHERIT
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| 100 | | OPEN_FLAGS_SEQUENTIAL // sequential, not random access
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| 101 | | OPEN_SHARE_DENYREADWRITE // deny r/w share
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| 102 | | OPEN_ACCESS_WRITEONLY, // write mode
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| 103 | NULL); // no EAs
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| 104 |
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| 105 | // If successful: get resource, write it and close file
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| 106 | if (arc == NO_ERROR)
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| 107 | {
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| 108 | arc = DosGetResource(hmod,
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| 109 | ulTypeID,
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| 110 | ulNameID,
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| 111 | &pvResourceData);
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| 112 | if (arc == NO_ERROR)
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| 113 | {
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| 114 | arc = DosWrite(hFile,
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| 115 | pvResourceData,
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| 116 | ulResourceSize,
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| 117 | &ulBytesWritten);
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| 118 | if (arc == NO_ERROR)
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| 119 | if (ulResourceSize != ulBytesWritten)
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| 120 | arc = ERROR_INVALID_DATA;
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| 121 |
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| 122 | DosFreeResource(pvResourceData);
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| 123 | }
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| 124 |
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| 125 | DosClose(hFile);
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | if (pulBytesWritten)
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| 130 | *pulBytesWritten = ulBytesWritten;
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| 131 |
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| 132 | return arc;
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| 133 | }
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| 134 |
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