Link CARDOpen.c

Former-commit-id: 28a4b75d39

src/Dolphin/card/CARDOpen.c

@@ -0,0 +1,125 @@
+#include <dolphin/card.h>
+#include <dolphin/dsp.h>
+#include <dolphin/dvd.h>
+#include <dolphin/os.h>
+
+#include <dolphin/CARDPriv.h>
+
+BOOL __CARDCompareFileName(CARDDir* ent, const char* fileName) {
+  char* entName;
+  char c1;
+  char c2;
+  int n;
+
+  entName = (char*)ent->fileName;
+  n = CARD_FILENAME_MAX;
+  while (0 <= --n) {
+    if ((c1 = *entName++) != (c2 = *fileName++)) {
+      return FALSE;
+    } else if (c2 == '\0') {
+      return TRUE;
+    }
+  }
+
+  if (*fileName == '\0') {
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+s32 __CARDAccess(CARDControl* card, CARDDir* ent) {
+  if (ent->gameName[0] == 0xFF) {
+    return CARD_RESULT_NOFILE;
+  }
+
+  if (card->diskID == &__CARDDiskNone ||
+      (memcmp(ent->gameName, card->diskID->gameName, 4) == 0 && memcmp(ent->company, card->diskID->company, 2) == 0)) {
+    return CARD_RESULT_READY;
+  }
+
+  return CARD_RESULT_NOPERM;
+}
+
+BOOL __CARDIsWritable(CARDDir* ent) {
+  if (ent->gameName[0] == 0xFF) {
+    return CARD_RESULT_NOFILE;
+  }
+
+  if ((ent->permission & CARD_ATTR_PUBLIC) != 0) {
+    return CARD_RESULT_READY;
+  }
+
+  return CARD_RESULT_NOPERM;
+}
+
+s32 __CARDGetFileNo(CARDControl* card, const char* fileName, s32* pfileNo) {
+  CARDDir* dir;
+  CARDDir* ent;
+  s32 fileNo;
+  s32 result;
+
+  if (!card->attached) {
+    return CARD_RESULT_NOCARD;
+  }
+
+  dir = __CARDGetDirBlock(card);
+  for (fileNo = 0; fileNo < CARD_MAX_FILE; fileNo++) {
+    ent = &dir[fileNo];
+    result = __CARDAccess(card, ent);
+    if (result < 0) {
+      continue;
+    }
+    if (__CARDCompareFileName(ent, fileName)) {
+      *pfileNo = fileNo;
+      return CARD_RESULT_READY;
+    }
+  }
+
+  return CARD_RESULT_NOFILE;
+}
+
+s32 CARDOpen(s32 chan, const char* fileName, CARDFileInfo* fileInfo) {
+  CARDControl* card;
+  CARDDir* dir;
+  CARDDir* ent;
+  s32 result;
+  s32 fileNo;
+
+  fileInfo->chan = -1;
+  result = __CARDGetControlBlock(chan, &card);
+  if (result < 0) {
+    return result;
+  }
+  result = __CARDGetFileNo(card, fileName, &fileNo);
+  if (0 <= result) {
+    dir = __CARDGetDirBlock(card);
+    ent = &dir[fileNo];
+    if (!CARDIsValidBlockNo(card, ent->startBlock)) {
+      result = CARD_RESULT_BROKEN;
+    } else {
+      fileInfo->chan = chan;
+      fileInfo->fileNo = fileNo;
+      fileInfo->offset = 0;
+      fileInfo->iBlock = ent->startBlock;
+    }
+  }
+  return __CARDPutControlBlock(card, result);
+}
+
+s32 CARDClose(CARDFileInfo* fileInfo) {
+  CARDControl* card;
+  s32 result;
+
+  result = __CARDGetControlBlock(fileInfo->chan, &card);
+  if (result < 0) {
+    return result;
+  }
+
+  fileInfo->chan = -1;
+  return __CARDPutControlBlock(card, CARD_RESULT_READY);
+}
+
+BOOL __CARDIsOpened(CARDControl* card, s32 fileNo) {
+  return FALSE;
+}