[fpc-pascal] Re: help: converting windows API to linux
May be you can use the Wine library. It is a library created to help porting applications from Windows to *NIX. Visit www.winehq.org Regards. Ñuño Martínez. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Looking for a Firebird book?
On Wed, Apr 9, 2008 at 5:53 AM, Codebue Fabio - P-Soft [EMAIL PROTECTED] wrote: Take a look to a new Firebird 2.1 next month and probably you will change your idea about it... UDF: FreeAdHocUDF, a lot of internal SQL function... and if you wanna a good book www.ibphoenix.com Helen Borrie book... a MUST! Will 2.1 have a true auto increment attribute? A boolean field perhaps? Those are the only things that I miss when using FB. I am aware that all of these issues can be resolved by using generators/triggers and a validating domain. That is what I like about MySQL, MSSQL and others that are missing from FB. Do not misunderstand though. I've used FB for 8+ years with great success in embedded, small and large transactional systems without flaw. Never had a corrupt DB. AFAIK, never had a corrupt backup. Most of the time, I deploy FB on Linux servers and backup using gbak. Tom ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
[fpc-pascal] Installing fpc 2.2.0 deb packages
Hello, Are there better ways to install fpc 2.2.0 on ubuntu besides downloading ~15 debs from sourceforge ? I'm thinking that it would be much more convenient to have all those debs packaged into a single tar . Or maybe there is some deb repository available ? Thanks, Adrian Maier ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Installing fpc 2.2.0 deb packages
[EMAIL PROTECTED] schreef: Hello, Are there better ways to install fpc 2.2.0 on ubuntu besides downloading ~15 debs from sourceforge ? I'm thinking that it would be much more convenient to have all those debs packaged into a single tar . Or maybe there is some deb repository available ? tar: http://sourceforge.net/project/showfiles.php?group_id=89339package_id=204004 repo: http://wiki.lazarus.freepascal.org/Getting_Lazarus#Getting_Lazarus_from_our_Ubuntu_repository Vincent ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Installing fpc 2.2.0 deb packages
On Fri, Apr 11, 2008 at 10:29:57AM +0200, Vincent Snijders wrote: [EMAIL PROTECTED] schreef: Hello, Are there better ways to install fpc 2.2.0 on ubuntu besides downloading ~15 debs from sourceforge ? I'm thinking that it would be much more convenient to have all those debs packaged into a single tar . Or maybe there is some deb repository available ? tar: http://sourceforge.net/project/showfiles.php?group_id=89339package_id=204004 repo: http://wiki.lazarus.freepascal.org/Getting_Lazarus#Getting_Lazarus_from_our_Ubuntu_repository Thanks for the links Vincent ! It's nice to see that the issue has long been adressed already ... The reason why I haven't found the tarred debs is that I've searched them starting from www.freepascal.org -- downloads -- sourceforge . Perhaps it's worth considering to upload fpc_all_i386_deb.tgz here as well : http://sourceforge.net/project/showfiles.php?group_id=2174 Thanks! Adrian Maier ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Looking for a Firebird book?
Michael Van Canneyt wrote: And it is exactly why I can't use MySQL, MSSQL: they don't have sequences or generators. I need the ID BEFORE I insert the record, not after. YES!! This is also missing from SQL Server... or at least, using a GUID is complete overkill. The mechanisms SQL Server has for retrieving the last interted identity value are completely unsane too. Yes, they do work, but things get tricky in real world situations. I have no idea how anyone wrote reliable code to insert a record and retern the IDENTITY value prior to SQL Server 2005. OT: does anyone know of a reliable generator style atomic robust multi user friendly auto IDENTITY generation mechanism for SQL Server? I'd love to be able to define one, but I don't think I have seen one yet that *really* works well. So: Each his taste :- Generators and For select .. into .. suspend are the features I really miss from Interbase/Firebird. M ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Looking for a Firebird book?
On Wed, 9 Apr 2008, Tom York wrote: On Wed, Apr 9, 2008 at 5:53 AM, Codebue Fabio - P-Soft [EMAIL PROTECTED] wrote: Take a look to a new Firebird 2.1 next month and probably you will change your idea about it... UDF: FreeAdHocUDF, a lot of internal SQL function... and if you wanna a good book www.ibphoenix.com Helen Borrie book... a MUST! Will 2.1 have a true auto increment attribute? A boolean field perhaps? Those are the only things that I miss when using FB. I am aware that all of these issues can be resolved by using generators/triggers and a validating domain. That is what I like about MySQL, MSSQL and others that are missing from FB. And it is exactly why I can't use MySQL, MSSQL: they don't have sequences or generators. I need the ID BEFORE I insert the record, not after. So: Each his taste :-) Michael. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Looking for a Firebird book?
2008/4/11, Matt Emson [EMAIL PROTECTED]: Michael Van Canneyt wrote: And it is exactly why I can't use MySQL, MSSQL: they don't have sequences or generators. I need the ID BEFORE I insert the record, not after. YES!! This is also missing from SQL Server... or at least, using a GUID is complete overkill. The mechanisms SQL Server has for retrieving the last interted identity value are completely unsane too. Yes, they do work, but things get tricky in real world situations. I have no idea how anyone wrote reliable code to insert a record and retern the IDENTITY value prior to SQL Server 2005. OT: does anyone know of a reliable generator style atomic robust multi user friendly auto IDENTITY generation mechanism for SQL Server? I'd love to be able to define one, but I don't think I have seen one yet that *really* works well. Have you try SCOPE_IDENTITY() ? Available at least since SQL SERVER 2000. I have used it with success. from MSDN : quote Returns the last identity value inserted into an identity column in the same scope. A scope is a module: a stored procedure, trigger, function, or batch. Therefore, two statements are in the same scope if they are in the same stored procedure, function, or batch. /quote Interesting article ( 10 Things You Shouldn't Do with SQL Server ) : http://www.sqljunkies.ddj.com/Article/92CC4817-604D-4344-8BE0-4490F8ED24B6.scuk -- Inoussa O. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Looking for a Firebird book?
Inoussa OUEDRAOGO wrote: Have you try SCOPE_IDENTITY() ? Available at least since SQL SERVER 2000. I have used it with success. Well, yeah. But it's not perfect. I want generators, as in: create generator an_atomic_counter; set an_atomic_counter = 1 /*or something like that*/ declare variable next_atomic_value int begin next_atomic_value = gen_id(an_atomic_counter, 1); end next_atomic_is is alway a unique incremental id, and is *not* tied to a specific table. It's not so much the ability to generate a unique id, it's the use auto inc IDENTITY fields or be damned attitude that Sql Server has. The only other option is a GUID. Microsoft's insane SET IDENTITY_INSERT ON|OFF is also dangerous. Have you ever tried to migrate data between to databases using Sql Server? Nightmare! from MSDN : quote Returns the last identity value inserted into an identity column in the same scope. A scope is a module: a stored procedure, trigger, function, or batch. Therefore, two statements are in the same scope if they are in the same stored procedure, function, or batch. /quote Interesting article ( 10 Things You Shouldn't Do with SQL Server ) : http://www.sqljunkies.ddj.com/Article/92CC4817-604D-4344-8BE0-4490F8ED24B6.scuk ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re[2]: [fpc-pascal] Building-Block Design - or putting it all together ; -)
Thanks, I'll check that one out. Andy PN I can't help you with your problem directly, but perhaps this newsgroup for PN object orient programming could help: PN News server:newsgroups.borland.com PN news group:borland.public.delphi.oodesign PN It is for Delphi, but it would be equally valid for freepascal as both use PN object pascal... PN cheers, PN Paul ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
I am planning to improve, if possible, the serial units for both Linux and Windows, but have a few questions before I proceed any further: 1- I guess the unit rtl\win\wininc\struct.inc has 2 bugs: a- bm_DCB_fRtsControl = $3000. It should be $2000. b- bm_DCB_fDtrControl = $30. It should be $20. Can anybody confirm this? No, they are correct. If you look into the headers you'll see: DWORD DCBlength; /* sizeof(DCB) */ DWORD BaudRate; /* Baudrate at which running */ DWORD fBinary: 1; /* Binary Mode (skip EOF check)*/ DWORD fParity: 1; /* Enable parity checking */ DWORD fOutxCtsFlow:1; /* CTS handshaking on output */ DWORD fOutxDsrFlow:1; /* DSR handshaking on output */ DWORD fDtrControl:2; /* DTR Flow control*/ DWORD fDsrSensitivity:1; /* DSR Sensitivity */ DWORD fTXContinueOnXoff: 1; /* Continue TX when Xoff sent */ DWORD fOutX: 1; /* Enable output X-ON/X-OFF*/ DWORD fInX: 1;/* Enable input X-ON/X-OFF */ DWORD fErrorChar: 1; /* Enable Err Replacement */ DWORD fNull: 1; /* Enable Null stripping */ DWORD fRtsControl:2; /* Rts Flow control*/ DWORD fAbortOnError:1; /* Abort all reads and writes on Error */ DWORD fDummy2:17; /* Reserved*/ WORD wReserved; /* Not currently used */ WORD XonLim; /* Transmit X-ON threshold */ WORD XoffLim; /* Transmit X-OFF threshold*/ BYTE ByteSize;/* Number of bits/byte, 4-8*/ BYTE Parity; /* 0-4=None,Odd,Even,Mark,Space*/ BYTE StopBits;/* 0,1,2 = 1, 1.5, 2 */ char XonChar; /* Tx and Rx X-ON character*/ char XoffChar;/* Tx and Rx X-OFF character */ char ErrorChar; /* Error replacement char */ char EofChar; /* End of Input character */ char EvtChar; /* Received Event character*/ WORD wReserved1; /* Fill for now. */ } DCB, *LPDCB; Note the :2 with frts and fdtr. These are two bit values, not one bit, so a mask that masks 2 bits makes sense 2- I will define TSerialFlags = set of (XOnXOffFlowControl, RtsCtsFlowControl); What flags do we have to set in Linux to have XOnXOff handshaking? The number of parameters in tios is mind boggling. Well the existance of flags are named IXON, IXOFF and IXANY might provide a clue when googled. 3- The Linux SerOpen function (based on fpopen) claims to return 0 if the device could not be found. Shouldn't it be -1? Probably. In 1.0.x times FPC unix functions had own error conventions. 4- Windows SerOpen function (based on CreateFile) returns an INVALID_HANDLE_VALUE if the device could not be found. How to unify for both Linux Windows? Is it safe to return instead -1 (as in the Linux case)? See Tomas, it is define 5- Is it OK to designate serial ports by COMx fow Windows and /dev/ttySx for Linux? No, since e.g a serial port on some other device might have a different state. And strictly, this is even possible for Windows. Always keep naming configurable and overridable. Those series are extremely common, but not that Also note that serial.pp is a general unix unit, not just linux. So it needs to work on FreeBSD too. (and maybe Mac, but I have no serial on my mac anymore) I've acquired a serial device suitable for testing with FreeBSD if needed. 6- Is it OK for TSerialState to include DCB for Windows and tios for Linux? I don't understand what you mean with this. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
Marco van de Voort wrote: 5- Is it OK to designate serial ports by COMx fow Windows and /dev/ttySx for Linux? No, since e.g a serial port on some other device might have a different state. And strictly, this is even possible for Windows. Always keep naming configurable and overridable. Those series are extremely common, but not that While not exactly the same situation, for one of my Windows apps in Delphi, I had to support real serial ports, virtual serial ports, and PC/SC card readers. I found it easier to present a string list of all devices and allow the user to select from the string list the port/device needed. Something similar can probably be done here, where the Windows ports can be read from the registry (a tricky process when virtual ports are involved such as com redirection over tcp/ip) and *nix can read the /dev/ttyS* entries. Then port selection is simply passing in the string selected from the string list. Completely Delphi incompatible, but probably the only way to get truly cross platform. You can't just assume a 1 is COM1 on Windows and /dev/ttyS1 on *nix. Windows can name ports "Virtual COM1" instead of "COM1" and then your attempt at passing '1' to build 'COM1' won't work. Likewise, on Linux, you might have /dev/modem for a serial port (in theory anyway, not sure if you'd access that as just a serial port). Of course, this just makes building the list the hard part. Jeff. -- I haven't smoked for 1 year, 7 months and 3 weeks, saving $2,716.59 and not smoking 18,110.61 cigarettes. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
Tomas Hajny wrote: If I read the Windows unit sources correctly, INVALID_HANDLE_VALUE = -1 too. However, I believe that you might consider returning UnusedHandle constant defined in System unit for all the platforms (that's -1 for at least most of them anyway, but I believe that it may be still better from portability point of view to refer to it using this constant). I cannot rely on what the actual value of INVALID_HANDLE_VALUE really is as it could in theory change. But nevertheless your suggestion to return the UnusedHandle constant, once I locate it :), is very logical. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
Marco van de Voort wrote: No, they are correct. If you look into the headers you'll see: DWORD DCBlength; /* sizeof(DCB) */ DWORD BaudRate; /* Baudrate at which running */ DWORD fBinary: 1; /* Binary Mode (skip EOF check)*/ DWORD fParity: 1; /* Enable parity checking */ DWORD fOutxCtsFlow:1; /* CTS handshaking on output */ DWORD fOutxDsrFlow:1; /* DSR handshaking on output */ DWORD fDtrControl:2; /* DTR Flow control*/ DWORD fDsrSensitivity:1; /* DSR Sensitivity */ DWORD fTXContinueOnXoff: 1; /* Continue TX when Xoff sent */ DWORD fOutX: 1; /* Enable output X-ON/X-OFF*/ DWORD fInX: 1;/* Enable input X-ON/X-OFF */ DWORD fErrorChar: 1; /* Enable Err Replacement */ DWORD fNull: 1; /* Enable Null stripping */ DWORD fRtsControl:2; /* Rts Flow control*/ DWORD fAbortOnError:1; /* Abort all reads and writes on Error */ DWORD fDummy2:17; /* Reserved*/ WORD wReserved; /* Not currently used */ WORD XonLim; /* Transmit X-ON threshold */ WORD XoffLim; /* Transmit X-OFF threshold*/ BYTE ByteSize;/* Number of bits/byte, 4-8*/ BYTE Parity; /* 0-4=None,Odd,Even,Mark,Space*/ BYTE StopBits;/* 0,1,2 = 1, 1.5, 2 */ char XonChar; /* Tx and Rx X-ON character*/ char XoffChar;/* Tx and Rx X-OFF character */ char ErrorChar; /* Error replacement char */ char EofChar; /* End of Input character */ char EvtChar; /* Received Event character*/ WORD wReserved1; /* Fill for now. */ } DCB, *LPDCB; Note the :2 with frts and fdtr. These are two bit values, not one bit, so a mask that masks 2 bits makes sense They are 2 bit values indeed, but each value has a specific function. fDtrControl can be: DTR_CONTROL_DISABLE, DTR_CONTROL_ENABLE, or DTR_CONTROL_HANDSHAKE. The latter is the common DTR/DSR handshaking choice. fRtsControl can be: RTS_CONTROL_DISABLE, RTS_CONTROL_ENABLE, RTS_CONTROL_HANDSHAKE, or RTS_CONTROL_TOGGLE. RTS_CONTROL_HANDSHAKE is the normal choice for a RTS/CTS handshaking. This is what dictated my suggestion for the values of $2000 and $20. Well the existance of flags are named IXON, IXOFF and IXANY might provide a clue when googled. MAN Stty will give much better results than google for these parameters. I had tried a few months ago to have a XOn/XOff serial communication, but I failed somewhere. I tried to use the flags you describe, but without success unfortunately. Could be something wrong with my hardware setup though. I will retry eventually again. 3- The Linux SerOpen function (based on fpopen) claims to return 0 if the device could not be found. Shouldn't it be -1? Probably. In 1.0.x times FPC unix functions had own error conventions. I will change it then to -1. 4- Windows SerOpen function (based on CreateFile) returns an INVALID_HANDLE_VALUE if the device could not be found. How to unify for both Linux Windows? Is it safe to return instead -1 (as in the Linux case)? See Tomas, it is define Agreed! 5- Is it OK to designate serial ports by COMx fow Windows and /dev/ttySx for Linux? No, since e.g a serial port on some other device might have a different state. And strictly, this is even possible for Windows. Always keep naming configurable and overridable. Those series are extremely common, but not that I think you might have misunderstood me. I am in fact saying that we should not standardize between Unix ;) and Windows for port names, just for the reasons you mentioned. Pls correct me if I am wrong. Also note that serial.pp is a general unix unit, not just linux. So it needs to work on FreeBSD too. (and maybe Mac, but I have no serial on my mac anymore) I will not change the basic Unix unit except for minor modifications if needed. I've acquired a serial device suitable for testing with FreeBSD if needed. I have serial devices for testing. You can still test the finished work with FreeBSD if you like. 6- Is it OK for TSerialState to include DCB for Windows and tios for Linux? I don't understand what you mean with this. The TSerialState for Windows is defined as: LineState: integer or so DCB: TDCB for Unix, it is: LineState: ssame tios: termios structure I do not think there is a way to unify this. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
Stephano schreef: I am planning to improve, if possible, the serial units for both Linux and Windows, but have a few questions before I proceed any further: ... 5- Is it OK to designate serial ports by COMx fow Windows and /dev/ttySx for Linux? FWIW, I have a USB to serial converter. It shows as /dev/ttyUSB0. Regards, Koenraad Lelong. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
Koenraad Lelong wrote: 5- Is it OK to designate serial ports by COMx fow Windows and /dev/ttySx for Linux? FWIW, I have a USB to serial converter. It shows as /dev/ttyUSB0. I see now how I did not express myself clearly: I meant that I did not intend to change the way devices are specified. Under Unix, you will be able to (and will have to) specify /dev/ttyUSB0 or any valid devicename to open. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Serial unit for Linux and Windows
On Fri, April 11, 2008 22:12, Stephano wrote: Tomas Hajny wrote: If I read the Windows unit sources correctly, INVALID_HANDLE_VALUE = -1 too. However, I believe that you might consider returning UnusedHandle constant defined in System unit for all the platforms (that's -1 for at least most of them anyway, but I believe that it may be still better from portability point of view to refer to it using this constant). I cannot rely on what the actual value of INVALID_HANDLE_VALUE really is as it could in theory change. But nevertheless your suggestion to return the UnusedHandle constant, once I locate it :), is very logical. Do I understand correctly that you cannot find it? As I wrote above, this constant is defined in unit System, i.e. always available without any additions to the uses clause or so. Tomas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
