/******************************************************************************
* Processes a registry file.
* Correctly processes comments (in # and ; form), line continuation.
*
* Parameters:
* in - input stream to read from
* first_chars - beginning of stream, read due to Unicode check
*/
static void processRegLinesA(FILE *in, char* first_chars)
{
LPSTR line = NULL; /* line read from input stream */
ULONG lineSize = REG_VAL_BUF_SIZE;
line = HeapAlloc(GetProcessHeap(), 0, lineSize);
CHECK_ENOUGH_MEMORY(line);
memcpy(line, first_chars, 2);
while (!feof(in)) {
LPSTR s; /* The pointer into line for where the current fgets should read */
WCHAR* lineW;
s = line;
if(first_chars)
{
s += 2;
first_chars = NULL;
}
for (;;) {
size_t size_remaining;
int size_to_get, i;
char *s_eol; /* various local uses */
/* Do we need to expand the buffer ? */
assert (s >= line && s <= line + lineSize);
size_remaining = lineSize - (s-line);
if (size_remaining < 2) /* room for 1 character and the \0 */
{
char *new_buffer;
size_t new_size = lineSize + REG_VAL_BUF_SIZE;
if (new_size > lineSize) /* no arithmetic overflow */
new_buffer = HeapReAlloc (GetProcessHeap(), 0, line, new_size);
else
new_buffer = NULL;
CHECK_ENOUGH_MEMORY(new_buffer);
line = new_buffer;
s = line + lineSize - size_remaining;
lineSize = new_size;
size_remaining = lineSize - (s-line);
}
/* Get as much as possible into the buffer, terminated either by
* eof, error, eol or getting the maximum amount. Abort on error.
*/
size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
/* get a single line. note that `i' must be one past the last
* meaningful character in `s' when this loop exits */
for(i = 0; i < size_to_get-1; ++i){
int xchar;
xchar = fgetc(in);
s[i] = xchar;
if(xchar == EOF){
if(ferror(in)){
perror("While reading input");
exit(IO_ERROR);
}else
assert(feof(in));
break;
}
if(s[i] == '\r'){
/* read the next character iff it's \n */
if(i+2 >= size_to_get){
/* buffer too short, so put back the EOL char to
* read next cycle */
ungetc('\r', in);
break;
}
s[i+1] = fgetc(in);
if(s[i+1] != '\n'){
ungetc(s[i+1], in);
i = i+1;
}else
i = i+2;
break;
}
if(s[i] == '\n'){
i = i+1;
break;
}
}
s[i] = '\0';
/* If we didn't read the eol nor the eof go around for the rest */
s_eol = strpbrk (s, "\r\n");
if (!feof (in) && !s_eol) {
s = strchr (s, '\0');
continue;
}
/* If it is a comment line then discard it and go around again */
if (line [0] == '#' || line [0] == ';') {
s = line;
continue;
}
/* Remove any line feed. Leave s_eol on the first \0 */
if (s_eol) {
if (*s_eol == '\r' && *(s_eol+1) == '\n')
*(s_eol+1) = '\0';
*s_eol = '\0';
} else
s_eol = strchr (s, '\0');
/* If there is a concatenating \\ then go around again */
if (s_eol > line && *(s_eol-1) == '\\') {
int c;
s = s_eol-1;
do
{
c = fgetc(in);
} while(c == ' ' || c == '\t');
if(c == EOF)
{
fprintf(stderr,"%s: ERROR - invalid continuation.\n",
getAppName());
}
else
{
*s = c;
s++;
}
continue;
}
lineW = GetWideString(line);
break; /* That is the full virtual line */
}
processRegEntry(lineW, FALSE);
HeapFree(GetProcessHeap(), 0, lineW);
}
processRegEntry(NULL, FALSE);
HeapFree(GetProcessHeap(), 0, line);
}
static void processRegLinesW(FILE *in)
{
WCHAR* buf = NULL; /* line read from input stream */
ULONG lineSize = REG_VAL_BUF_SIZE;
size_t CharsInBuf = -1;
WCHAR* s; /* The pointer into buf for where the current fgets should read */
WCHAR* line; /* The start of the current line */
buf = HeapAlloc(GetProcessHeap(), 0, lineSize * sizeof(WCHAR));
CHECK_ENOUGH_MEMORY(buf);
s = buf;
line = buf;
while(!feof(in)) {
size_t size_remaining;
int size_to_get;
WCHAR *s_eol = NULL; /* various local uses */
/* Do we need to expand the buffer ? */
assert (s >= buf && s <= buf + lineSize);
size_remaining = lineSize - (s-buf);
if (size_remaining < 2) /* room for 1 character and the \0 */
{
WCHAR *new_buffer;
size_t new_size = lineSize + (REG_VAL_BUF_SIZE / sizeof(WCHAR));
if (new_size > lineSize) /* no arithmetic overflow */
new_buffer = HeapReAlloc (GetProcessHeap(), 0, buf, new_size * sizeof(WCHAR));
else
new_buffer = NULL;
CHECK_ENOUGH_MEMORY(new_buffer);
buf = new_buffer;
line = buf;
s = buf + lineSize - size_remaining;
lineSize = new_size;
size_remaining = lineSize - (s-buf);
}
/* Get as much as possible into the buffer, terminated either by
* eof, error or getting the maximum amount. Abort on error.
*/
size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
CharsInBuf = fread(s, sizeof(WCHAR), size_to_get - 1, in);
s[CharsInBuf] = 0;
if (CharsInBuf == 0) {
if (ferror(in)) {
perror ("While reading input");
exit (IO_ERROR);
} else {
assert (feof(in));
*s = '\0';
/* It is not clear to me from the definition that the
* contents of the buffer are well defined on detecting
* an eof without managing to read anything.
*/
}
}
/* If we didn't read the eol nor the eof go around for the rest */
while(1)
{
const WCHAR line_endings[] = {'\r','\n',0};
s_eol = strpbrkW(line, line_endings);
if(!s_eol) {
/* Move the stub of the line to the start of the buffer so
* we get the maximum space to read into, and so we don't
* have to recalculate 'line' if the buffer expands */
MoveMemory(buf, line, (strlenW(line)+1) * sizeof(WCHAR));
line = buf;
s = strchrW(line, '\0');
break;
}
/* If it is a comment line then discard it and go around again */
if (*line == '#' || *line == ';') {
if (*s_eol == '\r' && *(s_eol+1) == '\n')
line = s_eol + 2;
else
line = s_eol + 1;
continue;
}
/* If there is a concatenating \\ then go around again */
if (*(s_eol-1) == '\\') {
WCHAR* NextLine = s_eol + 1;
if(*s_eol == '\r' && *(s_eol+1) == '\n')
NextLine++;
while(*(NextLine+1) == ' ' || *(NextLine+1) == '\t')
NextLine++;
MoveMemory(s_eol - 1, NextLine, (CharsInBuf - (NextLine - s) + 1)*sizeof(WCHAR));
CharsInBuf -= NextLine - s_eol + 1;
s_eol = 0;
continue;
}
/* Remove any line feed. Leave s_eol on the last \0 */
if (*s_eol == '\r' && *(s_eol + 1) == '\n')
*s_eol++ = '\0';
*s_eol = '\0';
processRegEntry(line, TRUE);
line = s_eol + 1;
s_eol = 0;
continue; /* That is the full virtual line */
}
}
processRegEntry(NULL, TRUE);
HeapFree(GetProcessHeap(), 0, buf);
}
/******************************************************************************
* Processes a registry file.
* Correctly processes comments (in # and ; form), line continuation.
*
* Parameters:
* in - input stream to read from
* first_chars - beginning of stream, read due to Unicode check
*/
static void processRegLinesA(FILE *in, char* first_chars)
{
char *buf = NULL; /* the line read from the input stream */
unsigned long line_size = REG_VAL_BUF_SIZE;
size_t chars_in_buf = -1;
char *s; /* A pointer to buf for fread */
char *line; /* The start of the current line */
WCHAR *lineW;
buf = HeapAlloc(GetProcessHeap(), 0, line_size);
CHECK_ENOUGH_MEMORY(buf);
s = buf;
line = buf;
memcpy(line, first_chars, 2);
if (first_chars)
s += 2;
while (!feof(in)) {
size_t size_remaining;
int size_to_get;
char *s_eol = NULL; /* various local uses */
/* Do we need to expand the buffer? */
assert(s >= buf && s <= buf + line_size);
size_remaining = line_size - (s - buf);
if (size_remaining < 3) /* we need at least 3 bytes of room for \r\n\0 */
{
char *new_buffer;
size_t new_size = line_size + REG_VAL_BUF_SIZE;
if (new_size > line_size) /* no arithmetic overflow */
new_buffer = HeapReAlloc(GetProcessHeap(), 0, buf, new_size);
else
new_buffer = NULL;
CHECK_ENOUGH_MEMORY(new_buffer);
buf = new_buffer;
line = buf;
s = buf + line_size - size_remaining;
line_size = new_size;
size_remaining = line_size - (s - buf);
}
/* Get as much as possible into the buffer, terminating on EOF,
* error or once we have read the maximum amount. Abort on error.
*/
size_to_get = (size_remaining > INT_MAX ? INT_MAX : size_remaining);
chars_in_buf = fread(s, 1, size_to_get - 1, in);
s[chars_in_buf] = 0;
if (chars_in_buf == 0) {
if (ferror(in)) {
perror("While reading input");
exit(IO_ERROR);
} else {
assert(feof(in));
*s = '\0';
}
}
/* If we didn't read the end-of-line sequence or EOF, go around again */
while (1)
{
s_eol = strpbrk(line, "\r\n");
if (!s_eol) {
/* Move the stub of the line to the start of the buffer so
* we get the maximum space to read into, and so we don't
* have to recalculate 'line' if the buffer expands */
MoveMemory(buf, line, strlen(line) + 1);
line = buf;
s = strchr(line, '\0');
break;
}
/* If we find a comment line, discard it and go around again */
if (line [0] == '#' || line [0] == ';') {
if (*s_eol == '\r' && *(s_eol + 1) == '\n')
line = s_eol + 2;
else
line = s_eol + 1;
continue;
}
/* If there is a concatenating '\\', go around again */
if (*(s_eol - 1) == '\\') {
char *next_line = s_eol + 1;
if (*s_eol == '\r' && *(s_eol + 1) == '\n')
next_line++;
while (*(next_line + 1) == ' ' || *(next_line + 1) == '\t')
next_line++;
MoveMemory(s_eol - 1, next_line, chars_in_buf - (next_line - s) + 1);
chars_in_buf -= next_line - s_eol + 1;
s_eol = 0;
continue;
}
/* Remove any line feed. Leave s_eol on the last \0 */
if (*s_eol == '\r' && *(s_eol + 1) == '\n')
*s_eol++ = '\0';
*s_eol = '\0';
lineW = GetWideString(line);
processRegEntry(lineW, FALSE);
HeapFree(GetProcessHeap(), 0, lineW);
line = s_eol + 1;
s_eol = 0;
continue; /* That is the full virtual line */
}
}
processRegEntry(NULL, FALSE);
HeapFree(GetProcessHeap(), 0, buf);
}
