Continuation callbackOnJobQueue (
JobQueue& jobQueue, std::string const& name, JobType jobType)
{
return Continuation ([name, jobType, &jobQueue] (Callback const& cb) {
jobQueue.addJob (jobType, name, [cb] (Job&) { cb(); });
});
}
static BOOL Parameter( myFILE *InFile, BOOL (*pfunc)(char *, char *), int c )
/* ------------------------------------------------------------------------ **
* Scan a parameter name and value, and pass these two fields to pfunc().
*
* Input: InFile - The input source.
* pfunc - A pointer to the function that will be called to
* process the parameter, once it has been scanned.
* c - The first character of the parameter name, which
* would have been read by Parse(). Unlike a comment
* line or a section header, there is no lead-in
* character that can be discarded.
*
* Output: True if the parameter name and value were scanned and processed
* successfully, else False.
*
* Notes: This function is in two parts. The first loop scans the
* parameter name. Internal whitespace is compressed, and an
* equal sign (=) terminates the token. Leading and trailing
* whitespace is discarded. The second loop scans the parameter
* value. When both have been successfully identified, they are
* passed to pfunc() for processing.
*
* ------------------------------------------------------------------------ **
*/
{
int i = 0; /* Position within bufr. */
int end = 0; /* bufr[end] is current end-of-string. */
int vstart = 0; /* Starting position of the parameter value. */
char *func = "params.c:Parameter() -";
/* Read the parameter name. */
while( 0 == vstart ) /* Loop until we've found the start of the value. */
{
if( i > (bSize - 2) ) /* Ensure there's space for next char. */
{
bSize += BUFR_INC;
bufr = Realloc( bufr, bSize );
if( NULL == bufr )
{
DEBUG(0, ("%s Memory re-allocation failure.", func) );
return( False );
}
}
switch( c )
{
case '=': /* Equal sign marks end of param name. */
if( 0 == end ) /* Don't allow an empty name. */
{
DEBUG(0, ("%s Invalid parameter name in config. file.\n", func ));
return( False );
}
bufr[end++] = '\0'; /* Mark end of string & advance. */
i = end; /* New string starts here. */
vstart = end; /* New string is parameter value. */
bufr[i] = '\0'; /* New string is nul, for now. */
break;
case '\n': /* Find continuation char, else error. */
i = Continuation( bufr, i );
if( i < 0 )
{
bufr[end] = '\0';
DEBUG(1,("%s Ignoring badly formed line in configuration file: %s\n",
func, bufr ));
return( True );
}
end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
c = mygetc( InFile ); /* Read past eoln. */
break;
case '\0': /* Shouldn't have EOF within param name. */
case EOF:
bufr[i] = '\0';
DEBUG(1,("%s Unexpected end-of-file at: %s\n", func, bufr ));
return( True );
default:
if( isspace( c ) ) /* One ' ' per whitespace region. */
{
bufr[end] = ' ';
i = end + 1;
c = EatWhitespace( InFile );
}
else /* All others verbatim. */
{
bufr[i++] = c;
end = i;
c = mygetc( InFile );
}
}
}
/* Now parse the value. */
c = EatWhitespace( InFile ); /* Again, trim leading whitespace. */
while( (EOF !=c) && (c > 0) )
{
if( i > (bSize - 2) ) /* Make sure there's enough room. */
{
bSize += BUFR_INC;
bufr = Realloc( bufr, bSize );
if( NULL == bufr )
{
DEBUG(0, ("%s Memory re-allocation failure.", func) );
return( False );
}
}
switch( c )
{
case '\r': /* Explicitly remove '\r' because the older */
c = mygetc( InFile ); /* version called fgets_slash() which also */
break; /* removes them. */
case '\n': /* Marks end of value unless there's a '\'. */
i = Continuation( bufr, i );
if( i < 0 )
c = 0;
else
{
for( end = i; (end >= 0) && isspace(bufr[end]); end-- )
;
c = mygetc( InFile );
}
break;
default: /* All others verbatim. Note that spaces do */
bufr[i++] = c; /* not advance <end>. This allows trimming */
if( !isspace( c ) ) /* of whitespace at the end of the line. */
end = i;
c = mygetc( InFile );
break;
}
}
bufr[end] = '\0'; /* End of value. */
return( pfunc( bufr, &bufr[vstart] ) ); /* Pass name & value to pfunc(). */
} /* Parameter */
static BOOL Section( myFILE *InFile, BOOL (*sfunc)(char *) )
/* ------------------------------------------------------------------------ **
* Scan a section name, and pass the name to function sfunc().
*
* Input: InFile - Input source.
* sfunc - Pointer to the function to be called if the section
* name is successfully read.
*
* Output: True if the section name was read and True was returned from
* <sfunc>. False if <sfunc> failed or if a lexical error was
* encountered.
*
* ------------------------------------------------------------------------ **
*/
{
int c;
int i;
int end;
char *func = "params.c:Section() -";
i = 0; /* <i> is the offset of the next free byte in bufr[] and */
end = 0; /* <end> is the current "end of string" offset. In most */
/* cases these will be the same, but if the last */
/* character written to bufr[] is a space, then <end> */
/* will be one less than <i>. */
c = EatWhitespace( InFile ); /* We've already got the '['. Scan */
/* past initial white space. */
while( (EOF != c) && (c > 0) )
{
/* Check that the buffer is big enough for the next character. */
if( i > (bSize - 2) )
{
bSize += BUFR_INC;
bufr = Realloc( bufr, bSize );
if( NULL == bufr )
{
DEBUG(0, ("%s Memory re-allocation failure.", func) );
return( False );
}
}
/* Handle a single character. */
switch( c )
{
case ']': /* Found the closing bracket. */
bufr[end] = '\0';
if( 0 == end ) /* Don't allow an empty name. */
{
DEBUG(0, ("%s Empty section name in configuration file.\n", func ));
return( False );
}
if( !sfunc( bufr ) ) /* Got a valid name. Deal with it. */
return( False );
(void)EatComment( InFile ); /* Finish off the line. */
return( True );
case '\n': /* Got newline before closing ']'. */
i = Continuation( bufr, i ); /* Check for line continuation. */
if( i < 0 )
{
bufr[end] = '\0';
DEBUG(0, ("%s Badly formed line in configuration file: %s\n",
func, bufr ));
return( False );
}
end = ( (i > 0) && (' ' == bufr[i - 1]) ) ? (i - 1) : (i);
c = mygetc( InFile ); /* Continue with next line. */
break;
default: /* All else are a valid name chars. */
if( isspace( c ) ) /* One space per whitespace region. */
{
bufr[end] = ' ';
i = end + 1;
c = EatWhitespace( InFile );
}
else /* All others copy verbatim. */
{
bufr[i++] = c;
end = i;
c = mygetc( InFile );
}
}
}
/* We arrive here if we've met the EOF before the closing bracket. */
DEBUG(0, ("%s Unexpected EOF in the configuration file: %s\n", func, bufr ));
return( False );
} /* Section */
static bool Parameter( DATA_BLOB *buf, myFILE *InFile, bool (*pfunc)(const char *, const char *, void *), int c, void *userdata )
{
int i = 0; /* Position within bufr. */
int end = 0; /* bufr[end] is current end-of-string. */
int vstart = 0; /* Starting position of the parameter value. */
const char *func = "params.c:Parameter() -";
/* Read the parameter name. */
while( 0 == vstart ) {
/* Loop until we've found the start of the value. */
if( i > (buf->length - 2) ) {
/* Ensure there's space for next char. */
uint8_t *tb = (uint8_t *)SMB_REALLOC_KEEP_OLD_ON_ERROR( buf->data, buf->length + BUFR_INC );
if (!tb) {
DEBUG(0, ("%s Memory re-allocation failure.", func) );
return False;
}
buf->data = tb;
buf->length += BUFR_INC;
}
switch(c) {
case '=': /* Equal sign marks end of param name. */
if( 0 == end ) {
/* Don't allow an empty name. */
DEBUG(0, ("%s Invalid parameter name in config. file.\n", func ));
return False;
}
buf->data[end++] = '\0'; /* Mark end of string & advance. */
i = end; /* New string starts here. */
vstart = end; /* New string is parameter value. */
buf->data[i] = '\0'; /* New string is nul, for now. */
break;
case '\n': /* Find continuation char, else error. */
i = Continuation( buf->data, i );
if( i < 0 ) {
buf->data[end] = '\0';
DEBUG(1,("%s Ignoring badly formed line in configuration file: %s\n", func, buf->data ));
return True;
}
end = ( (i > 0) && (' ' == buf->data[i - 1]) ) ? (i - 1) : (i);
c = mygetc( InFile ); /* Read past eoln. */
break;
case '\0': /* Shouldn't have EOF within param name. */
case EOF:
buf->data[i] = '\0';
DEBUG(1,("%s Unexpected end-of-file at: %s\n", func, buf->data ));
return True;
default:
if(isspace( c )) {
/* One ' ' per whitespace region. */
buf->data[end] = ' ';
i = end + 1;
c = EatWhitespace( InFile );
} else {
buf->data[i++] = c;
end = i;
c = mygetc( InFile );
}
}
}
/* Now parse the value. */
c = EatWhitespace( InFile ); /* Again, trim leading whitespace. */
while( (EOF !=c) && (c > 0) ) {
if( i > (buf->length - 2) ) {
/* Make sure there's enough room. */
uint8_t *tb = (uint8_t *)SMB_REALLOC_KEEP_OLD_ON_ERROR( buf->data, buf->length + BUFR_INC );
if (!tb) {
DEBUG(0, ("%s Memory re-allocation failure.", func));
return False;
}
buf->data = tb;
buf->length += BUFR_INC;
}
switch(c) {
case '\r': /* Explicitly remove '\r' because the older */
c = mygetc( InFile ); /* version called fgets_slash() which also */
break; /* removes them. */
case '\n': /* Marks end of value unless there's a '\'. */
i = Continuation( buf->data, i );
if( i < 0 ) {
c = 0;
} else {
for( end = i; (end >= 0) && isspace((int)buf->data[end]); end-- )
;
c = mygetc( InFile );
}
break;
default: /* All others verbatim. Note that spaces do not advance <end>. This allows trimming */
buf->data[i++] = c;
if( !isspace( c ) ) /* of whitespace at the end of the line. */
end = i;
c = mygetc( InFile );
break;
}
}
buf->data[end] = '\0'; /* End of value. */
return( pfunc( (char *)buf->data, (char *)&buf->data[vstart], userdata ) ); /* Pass name & value to pfunc(). */
}
static bool Section( DATA_BLOB *buf, myFILE *InFile, bool (*sfunc)(const char *, void *), void *userdata )
{
int c;
int i;
int end;
const char *func = "params.c:Section() -";
i = 0; /* <i> is the offset of the next free byte in bufr[] and */
end = 0; /* <end> is the current "end of string" offset. In most */
/* cases these will be the same, but if the last */
/* character written to bufr[] is a space, then <end> */
/* will be one less than <i>. */
/* Find the end of the section. We must use mb functions for this. */
if (!FindSectionEnd(InFile)) {
DEBUG(0, ("%s No terminating ']' character in section.\n", func) );
return False;
}
c = EatWhitespace( InFile ); /* We've already got the '['. Scan */
/* past initial white space. */
while( (EOF != c) && (c > 0) ) {
/* Check that the buffer is big enough for the next character. */
if( i > (buf->length - 2) ) {
uint8_t *tb = (uint8_t *)SMB_REALLOC_KEEP_OLD_ON_ERROR(buf->data, buf->length+BUFR_INC );
if(!tb) {
DEBUG(0, ("%s Memory re-allocation failure.", func) );
return False;
}
buf->data = tb;
buf->length += BUFR_INC;
}
/* Handle a single character other than section end. */
switch( c ) {
case '\n': /* Got newline before closing ']'. */
i = Continuation( buf->data, i ); /* Check for line continuation. */
if( i < 0 ) {
buf->data[end] = '\0';
DEBUG(0, ("%s Badly formed line in configuration file: %s\n", func, buf->data ));
return False;
}
end = ( (i > 0) && (' ' == buf->data[i - 1]) ) ? (i - 1) : (i);
c = mygetc( InFile ); /* Continue with next line. */
break;
default: /* All else are a valid name chars. */
if(isspace( c )) {
/* One space per whitespace region. */
buf->data[end] = ' ';
i = end + 1;
c = EatWhitespace( InFile );
} else {
buf->data[i++] = c;
end = i;
c = mygetc( InFile );
}
}
if (AtSectionEnd(InFile)) {
/* Got to the closing bracket. */
buf->data[end] = '\0';
if( 0 == end ) {
/* Don't allow an empty name. */
DEBUG(0, ("%s Empty section name in configuration file.\n", func ));
return False;
}
if( !sfunc((char *)buf->data, userdata) ) /* Got a valid name. Deal with it. */
return False;
EatComment( InFile ); /* Finish off the line. */
return True;
}
}
/* We arrive here if we've met the EOF before the closing bracket. */
DEBUG(0, ("%s Unexpected EOF in the configuration file: %s\n", func, buf->data ));
return False;
}
void test (int chunkSize, Strings const& expected)
{
auto name = std::to_string (chunkSize);
setup (name);
std::string buffer;
Json::Output output = Json::stringOutput (buffer);
auto makeContinuation = [&] (std::string const& data) {
return Continuation ([=] (Callback const& cb) {
output (data + " ");
cb();
});
};
Strings result;
SuspendCallback suspendCallback ([&] (Suspend const& suspend)
{
Callback yield = suspendForContinuation (
suspend, makeContinuation ("*"));
auto out = chunkedYieldingOutput (output, yield, chunkSize);
out ("hello ");
result.push_back (buffer);
suspend (makeContinuation("HELLO"));
result.push_back (buffer);
out ("there ");
result.push_back (buffer);
suspend (makeContinuation("THERE"));
result.push_back (buffer);
out ("world ");
result.push_back (buffer);
suspend (makeContinuation("WORLD"));
result.push_back (buffer);
});
Coroutine (suspendCallback).run();
expectCollectionEquals (result, expected);
static
auto const printResults = false;
if (! printResults)
return;
std::string indent1 = " ";
std::string indent2 = indent1 + " ";
std::cerr << indent1 << "test (" + name + ", {";
for (auto i = 0; i < result.size(); ++i) {
if (i)
std::cerr << ",";
std::cerr << "\n" << indent2;
std::cerr << '"' << result[i] << '"';
}
std::cerr << "\n" << indent2 << "});\n";
expect(true);
}
