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Added support for Theocracy *.pck archives.
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/** | ||
* MojoSetup; a portable, flexible installation application. | ||
* | ||
* Please see the file LICENSE.txt in the source's root directory. | ||
* | ||
* This file written by Steffen Pankratz. | ||
*/ | ||
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#include "fileio.h" | ||
#include "platform.h" | ||
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#if !SUPPORT_PCK | ||
MojoArchive *MojoArchive_createPCK(MojoInput *io) { return NULL; } | ||
#else | ||
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#define PCK_MAGIC 0x534c4850 | ||
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typedef struct | ||
{ | ||
uint32 Magic; // 4 bytes, has to be 0x534c4850 | ||
uint32 StartOfBinaryData; // 4 bytes, offset to the data | ||
}PCK_HEADER; | ||
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typedef struct | ||
{ | ||
int8 filename[60]; // 60 bytes, null terminated | ||
uint32 filesize; // 4 bytes | ||
}PCK_FILE_ENTRY; | ||
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typedef struct PCKinfo | ||
{ | ||
uint64 fileCount; | ||
uint64 dataStart; | ||
uint64 nextFileStart; | ||
int64 nextEnumPos; | ||
MojoArchiveEntry *archiveEntires; | ||
} PCKinfo; | ||
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static boolean MojoInput_pck_ready(MojoInput *io) | ||
{ | ||
return true; // !!! FIXME? | ||
} // MojoInput_pck_ready | ||
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static int64 MojoInput_pck_read(MojoInput *io, void *buf, uint32 bufsize) | ||
{ | ||
MojoArchive *ar = (MojoArchive *) io->opaque; | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
int64 pos = io->tell(io); | ||
if ((pos + bufsize) > info->archiveEntires[info->nextEnumPos].filesize) | ||
bufsize = (uint32) (info->archiveEntires[info->nextEnumPos].filesize - pos); | ||
return ar->io->read(ar->io, buf, bufsize); | ||
} // MojoInput_pck_read | ||
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static boolean MojoInput_pck_seek(MojoInput *io, uint64 pos) | ||
{ | ||
MojoArchive *ar = (MojoArchive *) io->opaque; | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
boolean retval = false; | ||
if (pos < ((uint64) info->archiveEntires[info->nextEnumPos].filesize)) | ||
retval = ar->io->seek(ar->io, (info->nextFileStart - info->archiveEntires[info->nextEnumPos].filesize) + pos); | ||
return retval; | ||
} // MojoInput_pck_seek | ||
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static int64 MojoInput_pck_tell(MojoInput *io) | ||
{ | ||
MojoArchive *ar = (MojoArchive *) io->opaque; | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
return ar->io->tell(ar->io) - (info->nextFileStart - info->archiveEntires[info->nextEnumPos].filesize); | ||
} // MojoInput_pck_tell | ||
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static int64 MojoInput_pck_length(MojoInput *io) | ||
{ | ||
MojoArchive *ar = (MojoArchive *) io->opaque; | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
return info->archiveEntires[info->nextEnumPos].filesize; | ||
} // MojoInput_pck_length | ||
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static MojoInput *MojoInput_pck_duplicate(MojoInput *io) | ||
{ | ||
MojoInput *retval = NULL; | ||
fatal(_("BUG: Can't duplicate pck inputs")); // !!! FIXME: why not? | ||
return retval; | ||
} // MojoInput_pck_duplicate | ||
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static void MojoInput_pck_close(MojoInput *io) | ||
{ | ||
free(io); | ||
} // MojoInput_pck_close | ||
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// MojoArchive implementation... | ||
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static boolean MojoArchive_pck_enumerate(MojoArchive *ar) | ||
{ | ||
MojoArchive_resetEntry(&ar->prevEnum); | ||
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PCKinfo *info = (PCKinfo *) ar->opaque; | ||
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int dataStart = info->dataStart; | ||
int fileCount = dataStart / sizeof(PCK_FILE_ENTRY); | ||
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MojoArchiveEntry *archiveEntries = xmalloc(fileCount * sizeof(MojoArchiveEntry)); | ||
PCK_FILE_ENTRY fileEntry; | ||
uint64 i, realFileCount = 0; | ||
char directory[256] = {'\0'}; | ||
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for(i = 0; i < fileCount; i++) | ||
{ | ||
ar->io->read(ar->io, &fileEntry, sizeof(PCK_FILE_ENTRY)); | ||
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if(strcmp(fileEntry.filename, "..") != 0 && fileEntry.filesize == 0x80000000) | ||
{ | ||
strcat(directory, fileEntry.filename); | ||
strcat(directory, "/"); | ||
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archiveEntries[realFileCount].filename = xstrdup(directory); | ||
archiveEntries[realFileCount].type = MOJOARCHIVE_ENTRY_DIR; | ||
archiveEntries[realFileCount].perms = MojoPlatform_defaultDirPerms(); | ||
archiveEntries[realFileCount].filesize = 0L; | ||
realFileCount++; | ||
} | ||
else if(strcmp(fileEntry.filename, "..") == 0 && fileEntry.filesize == 0x80000000) | ||
{ | ||
//remove trailing path separator | ||
size_t strLength = strlen(directory); | ||
directory[strLength - 1] = '\0'; | ||
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char *pathSep = strrchr(directory, '/'); | ||
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if(pathSep != NULL) | ||
{ | ||
pathSep++; | ||
*pathSep = '\0'; | ||
} | ||
} | ||
else | ||
{ | ||
if(directory[0] == '\0') | ||
{ | ||
archiveEntries[realFileCount].filename = xstrdup(fileEntry.filename); | ||
} | ||
else | ||
{ | ||
archiveEntries[realFileCount].filename = (char *)xmalloc(sizeof(char) * (strlen(directory) + strlen(fileEntry.filename) + 1)); | ||
strcat(archiveEntries[realFileCount].filename, directory); | ||
strcat(archiveEntries[realFileCount].filename, fileEntry.filename); | ||
} | ||
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archiveEntries[realFileCount].perms = MojoPlatform_defaultFilePerms(); | ||
archiveEntries[realFileCount].type = MOJOARCHIVE_ENTRY_FILE; | ||
archiveEntries[realFileCount].filesize = fileEntry.filesize; | ||
realFileCount++; | ||
} | ||
} | ||
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info->fileCount = realFileCount; | ||
info->archiveEntires = archiveEntries; | ||
info->nextEnumPos = -1; | ||
info->nextFileStart = dataStart; | ||
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return true; | ||
} // MojoArchive_pck_enumerate | ||
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static const MojoArchiveEntry *MojoArchive_pck_enumNext(MojoArchive *ar) | ||
{ | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
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if (info->nextEnumPos + 1 >= info->fileCount) | ||
return NULL; | ||
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if (info->nextEnumPos > 0 && !ar->io->seek(ar->io, info->nextFileStart)) | ||
return NULL; | ||
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info->nextEnumPos++; | ||
info->nextFileStart += info->archiveEntires[info->nextEnumPos].filesize; | ||
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ar->prevEnum = info->archiveEntires[info->nextEnumPos]; | ||
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return &ar->prevEnum; | ||
} // MojoArchive_pck_enumNext | ||
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static MojoInput *MojoArchive_pck_openCurrentEntry(MojoArchive *ar) | ||
{ | ||
MojoInput *io = NULL; | ||
io = (MojoInput *) xmalloc(sizeof (MojoInput)); | ||
io->ready = MojoInput_pck_ready; | ||
io->read = MojoInput_pck_read; | ||
io->seek = MojoInput_pck_seek; | ||
io->tell = MojoInput_pck_tell; | ||
io->length = MojoInput_pck_length; | ||
io->duplicate = MojoInput_pck_duplicate; | ||
io->close = MojoInput_pck_close; | ||
io->opaque = ar; | ||
return io; | ||
} // MojoArchive_pck_openCurrentEntry | ||
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static void MojoArchive_pck_close(MojoArchive *ar) | ||
{ | ||
int i; | ||
PCKinfo *info = (PCKinfo *) ar->opaque; | ||
ar->io->close(ar->io); | ||
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for(i = 0; i < info->fileCount; i++) | ||
{ | ||
MojoArchiveEntry entry = info->archiveEntires[i]; | ||
free(entry.filename); | ||
} | ||
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free(info->archiveEntires); | ||
free(info); | ||
free(ar); | ||
} // MojoArchive_pck_close | ||
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MojoArchive *MojoArchive_createPCK(MojoInput *io, const char *origfname, const char *origfname23) | ||
{ | ||
MojoArchive *ar = NULL; | ||
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PCK_HEADER pckHeader; | ||
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const int64 br = io->read(io, &pckHeader, sizeof (PCK_HEADER)); | ||
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// Check if this is a *.pck file. | ||
if ( (br != sizeof (PCK_HEADER)) || (pckHeader.Magic != PCK_MAGIC) ) | ||
return NULL; | ||
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PCKinfo *pckInfo = (PCKinfo *) xmalloc(sizeof (PCKinfo)); | ||
pckInfo->dataStart = pckHeader.StartOfBinaryData + sizeof(PCK_HEADER); | ||
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ar = (MojoArchive *) xmalloc(sizeof (MojoArchive)); | ||
ar->opaque = pckInfo; | ||
ar->enumerate = MojoArchive_pck_enumerate; | ||
ar->enumNext = MojoArchive_pck_enumNext; | ||
ar->openCurrentEntry = MojoArchive_pck_openCurrentEntry; | ||
ar->close = MojoArchive_pck_close; | ||
ar->io = io; | ||
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return ar; | ||
} // MojoArchive_createPCK | ||
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#endif // SUPPORT_PCK | ||
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// end of archive_pck.c ... |
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