char *wbFile_read(wbFile_t file, size_t size, size_t count) {
size_t res;
char *buffer;
size_t bufferLen;
FILE *handle;
if (file == NULL) {
return NULL;
}
#ifndef LAZY_FILE_LOAD
if (wbFile_getData(file) != NULL) {
char *data = wbFile_getData(file) + wbFile_getDataOffset(file);
wbFile_setDataOffset(file, wbFile_getDataOffset(file) + size * count);
return data;
}
#endif /* LAZY_FILE_LOAD */
handle = wbFile_getFileHandle(file);
bufferLen = size * count + 1;
buffer = wbNewArray(char, bufferLen);
res = fread(buffer, size, count, handle);
// make valid C string
buffer[size * res] = '\0';
return buffer;
}
char *wbFile_readLine(wbFile_t file) {
if (file == NULL) {
return NULL;
}
#ifdef LAZY_FILE_LOAD
FILE *handle;
memset(buffer, 0, MAX_CHARS_PER_LINE);
handle = wbFile_getFileHandle(file);
if (fgets(buffer, MAX_CHARS_PER_LINE - 1, handle)) {
return buffer;
} else {
//wbLog(ERROR, "Was not able to read line from ", wbFile_getFileName(file));
return NULL;
}
#else
size_t newOffset;
size_t lenToNewLine = 0;
const char *tmp;
if (wbFile_getData(file) == NULL) {
wbFile_setData(file, wbFile_read(file));
fclose(wbFile_getFileHandle(file));
wbFile_setFileHandle(file, NULL);
wbFile_setDataOffset(file, 0);
wbFile_setLength(file, strlen(wbFile_getData(file)));
}
memset(buffer, 0, MAX_CHARS_PER_LINE);
if (wbFile_getDataOffset(file) >= wbFile_getLength(file)) {
return NULL;
}
newOffset = wbFile_getDataOffset(file);
tmp = wbFile_getData(file) + wbFile_getDataOffset(file);
while (newOffset < wbFile_getLength(file) && *tmp != '\n') {
tmp++;
lenToNewLine++;
newOffset++;
}
memcpy(buffer, wbFile_getData(file) + wbFile_getDataOffset(file),
lenToNewLine);
wbFile_setDataOffset(file, newOffset + 1);
return buffer;
#endif
}
void wbFile_delete(wbFile_t file) {
if (file != NULL) {
int idx = wbFile_getIndex(file);
if (wbFile_getFileName(file) != NULL) {
wbDelete(wbFile_getFileName(file));
}
if (wbFile_getMode(file) != NULL) {
wbDelete(wbFile_getMode(file));
}
if (wbFile_getFileHandle(file) != NULL) {
fclose(wbFile_getFileHandle(file));
}
if (idx >= 0) {
wbAssert(wbFile_handles[idx] == file);
wbFile_handles[idx] = NULL;
}
if (wbFile_getData(file) != NULL) {
wbDelete(wbFile_getData(file));
}
wbDelete(file);
}
}
size_t wbFile_size(wbFile_t file) {
size_t len;
FILE *handle;
if (file == NULL) {
return 0;
}
#ifndef LAZY_FILE_LOAD
if (wbFile_getData(file) != NULL) {
if (wbFile_getLength(file) == 0) {
wbFile_setLength(file, strlen(wbFile_getData(file)));
}
return wbFile_getLength(file);
}
#endif /* LAZY_FILE_LOAD */
handle = wbFile_getFileHandle(file);
fseek(handle, 0, SEEK_END);
len = ftell(handle);
rewind(handle);
return len;
}
void wbFile_rewind(wbFile_t file) {
if (file == NULL) {
return ;
}
if (wbFile_getData(file) != NULL) {
FILE * handle;
handle = wbFile_getFileHandle(file);
rewind(handle);
}
#ifndef LAZY_FILE_LOAD
else {
wbFile_setDataOffset(file, 0);
}
#endif
return ;
}