105 lines
1.8 KiB
C
105 lines
1.8 KiB
C
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#include <stdlib.h>
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#include <hfs/hfsplus.h>
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static int flatFileRead(io_func* io, off_t location, size_t size, void *buffer) {
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FILE* file;
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file = (FILE*) io->data;
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if(size == 0) {
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return TRUE;
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}
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//printf("%d %d\n", location, size); fflush(stdout);
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if(fseeko(file, location, SEEK_SET) != 0) {
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perror("fseek");
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return FALSE;
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}
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if(fread(buffer, size, 1, file) != 1) {
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perror("fread");
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return FALSE;
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} else {
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return TRUE;
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}
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}
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static int flatFileWrite(io_func* io, off_t location, size_t size, void *buffer) {
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FILE* file;
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/*int i;
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printf("write: %lld %d - ", location, size); fflush(stdout);
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for(i = 0; i < size; i++) {
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printf("%x ", ((unsigned char*)buffer)[i]);
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fflush(stdout);
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}
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printf("\n"); fflush(stdout);*/
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if(size == 0) {
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return TRUE;
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}
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file = (FILE*) io->data;
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if(fseeko(file, location, SEEK_SET) != 0) {
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perror("fseek");
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return FALSE;
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}
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if(fwrite(buffer, size, 1, file) != 1) {
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perror("fwrite");
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return FALSE;
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} else {
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return TRUE;
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}
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return TRUE;
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}
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static void closeFlatFile(io_func* io) {
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FILE* file;
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file = (FILE*) io->data;
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fclose(file);
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free(io);
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}
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io_func* openFlatFile(const char* fileName) {
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io_func* io;
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io = (io_func*) malloc(sizeof(io_func));
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io->data = fopen(fileName, "rb+");
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if(io->data == NULL) {
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perror("fopen");
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return NULL;
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}
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io->read = &flatFileRead;
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io->write = &flatFileWrite;
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io->close = &closeFlatFile;
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return io;
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}
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io_func* openFlatFileRO(const char* fileName) {
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io_func* io;
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io = (io_func*) malloc(sizeof(io_func));
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io->data = fopen(fileName, "rb");
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if(io->data == NULL) {
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perror("fopen");
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return NULL;
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}
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io->read = &flatFileRead;
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io->write = &flatFileWrite;
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io->close = &closeFlatFile;
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return io;
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}
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