BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TParser Goto page 1, 2  Next          BorlandTalk.com Forum Index -> C++ Builder (Language C++) View previous topic :: View next topic   Author Message Lee Gobroski Guest Posted: Sat Mar 26, 2005 11:48 am    Post subject: TParser Hello, While searching on the web, I found reference to the TParse class. can any one shed any more light on how to use it... like a real example... I have found this. http://bdn.borland.com/article/0,1410,26380,00.html I have compiled and played with the example they use, but that did not help a whole lot. Thanks in advance. Lee Back to top Dennis Jones Guest Posted: Sat Mar 26, 2005 7:47 pm    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: Hello, While searching on the web, I found reference to the TParse class. can any one shed any more light on how to use it... like a real example... I have found this. http://bdn.borland.com/article/0,1410,26380,00.html I have compiled and played with the example they use, but that did not help a whole lot. What do you want to do? There is a tokenizer class in boost (version 1.32) that I just recently started using, and I really like it. - Dennis Back to top Lee Gobroski Guest Posted: Sat Mar 26, 2005 8:14 pm    Post subject: Re: TParser Dennis, I have a CSV file that has 1500+ lines that I would like to go through and add all values to an array. then I would like the values to show up on a form.. an example of the file is this: Last,First,Middle,Suffix,City Abel,Evan,F,,Spokane Aberle,Nicholas,Richard,,Yakima Abigania,Melanie,M,,Everett Abundiz,Clementina,,,Yakima Acheson,LynnMarie,L,,Everett Ackerlund,Kaylene,Michelle,,Ellensburg Adamson,Kristen,E,,Ellensburg Last,First,Middle,Suffix, AND City are all the elements of the array. Thanks. Lee "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:42454be7$1 (AT) newsgroups (DOT) borland.com... Hello, While searching on the web, I found reference to the TParse class. can any one shed any more light on how to use it... like a real example... I have found this. http://bdn.borland.com/article/0,1410,26380,00.html I have compiled and played with the example they use, but that did not help a whole lot. What do you want to do? There is a tokenizer class in boost (version 1.32) that I just recently started using, and I really like it. - Dennis Back to top Michel Leunen Guest Posted: Sat Mar 26, 2005 8:21 pm    Post subject: Re: TParser Lee Gobroski wrote: Quote: While searching on the web, I found reference to the TParse class. can any one shed any more light on how to use it... like a real example... I have writen a little tip article about the TParser class but you have to know that it's just a curiosity, quite unusable. Just play with it and you'll understand what I mean. http://www.leunen.com/cbuilder/tparser.html Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. C++Builder, BCC5.5.1 Web site: http://www.leunen.com/ ---------------------------------------- Back to top Dennis Jones Guest Posted: Sat Mar 26, 2005 9:11 pm    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: Dennis, I have a CSV file that has 1500+ lines that I would like to go through and add all values to an array. then I would like the values to show up on a form.. an example of the file is this: Last,First,Middle,Suffix,City Abel,Evan,F,,Spokane Aberle,Nicholas,Richard,,Yakima Abigania,Melanie,M,,Everett Abundiz,Clementina,,,Yakima Acheson,LynnMarie,L,,Everett Ackerlund,Kaylene,Michelle,,Ellensburg Adamson,Kristen,E,,Ellensburg Last,First,Middle,Suffix, AND City are all the elements of the array. The tokenizer template in boost would definitely work. You could do this very easily with two tokenizers: one to iterate through the lines (using carriage return as the delimiter), and one to iterate through the elements in each line (using comma as the delimiter). On the other hand, if you are looking for a simple VCL implementation (as opposed to boost), you could do this too: Load the file into a TStringList, then assign each string (line) to the CommaText property of a second TStringList to parse the values from the line. Something like this (untested): TStringList *pFile = new TStringList; // after this line executes, each string in 'pFile' will be one line of the file pFile->LoadFromFile( "myfile.txt" ); TStringList *pLine = new TStringList; for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } LoadFromFile() does all the work of splitting the file into separate lines, and the CommaText property does all the work of parsing the values out of a CSV string. Good luck, - Dennis Back to top Lee Gobroski Guest Posted: Mon Mar 28, 2005 1:01 am    Post subject: Re: TParser Dennis, Thanks so much. I can now get each string and what not. Now I am wondering how I would go about dividing the text up. You see I want the first name, last name, and city all in text boxes. Then I want to click on next and have it move to the next record. I hope that is clear on what I want. Thanks again, Lee "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:4245c2b8$1 (AT) newsgroups (DOT) borland.com... Dennis, I have a CSV file that has 1500+ lines that I would like to go through and add all values to an array. then I would like the values to show up on a form.. an example of the file is this: Last,First,Middle,Suffix,City Abel,Evan,F,,Spokane Aberle,Nicholas,Richard,,Yakima Abigania,Melanie,M,,Everett Abundiz,Clementina,,,Yakima Acheson,LynnMarie,L,,Everett Ackerlund,Kaylene,Michelle,,Ellensburg Adamson,Kristen,E,,Ellensburg Last,First,Middle,Suffix, AND City are all the elements of the array. The tokenizer template in boost would definitely work. You could do this very easily with two tokenizers: one to iterate through the lines (using carriage return as the delimiter), and one to iterate through the elements in each line (using comma as the delimiter). On the other hand, if you are looking for a simple VCL implementation (as opposed to boost), you could do this too: Load the file into a TStringList, then assign each string (line) to the CommaText property of a second TStringList to parse the values from the line. Something like this (untested): TStringList *pFile = new TStringList; // after this line executes, each string in 'pFile' will be one line of the file pFile->LoadFromFile( "myfile.txt" ); TStringList *pLine = new TStringList; for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } LoadFromFile() does all the work of splitting the file into separate lines, and the CommaText property does all the work of parsing the values out of a CSV string. Good luck, - Dennis Back to top Lee Gobroski Guest Posted: Mon Mar 28, 2005 2:03 am    Post subject: Re: TParser here is what I have now... String list[4]; //4 element array String name; //file name TStringList *pFile = new TStringList; TStringList *pLine = new TStringList; if(Form1->OpenDialog1->Execute()) { name = Form1->OpenDialog1->FileName; } pFile->LoadFromFile(name); for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } list[0] = pLine->CommaText.SubString(0,6); edtLastName->Text = pLine->CommaText.SubString(0,6); //this works, just not dynamic "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:4245c2b8$1 (AT) newsgroups (DOT) borland.com... Dennis, I have a CSV file that has 1500+ lines that I would like to go through and add all values to an array. then I would like the values to show up on a form.. an example of the file is this: Last,First,Middle,Suffix,City Abel,Evan,F,,Spokane Aberle,Nicholas,Richard,,Yakima Abigania,Melanie,M,,Everett Abundiz,Clementina,,,Yakima Acheson,LynnMarie,L,,Everett Ackerlund,Kaylene,Michelle,,Ellensburg Adamson,Kristen,E,,Ellensburg Last,First,Middle,Suffix, AND City are all the elements of the array. The tokenizer template in boost would definitely work. You could do this very easily with two tokenizers: one to iterate through the lines (using carriage return as the delimiter), and one to iterate through the elements in each line (using comma as the delimiter). On the other hand, if you are looking for a simple VCL implementation (as opposed to boost), you could do this too: Load the file into a TStringList, then assign each string (line) to the CommaText property of a second TStringList to parse the values from the line. Something like this (untested): TStringList *pFile = new TStringList; // after this line executes, each string in 'pFile' will be one line of the file pFile->LoadFromFile( "myfile.txt" ); TStringList *pLine = new TStringList; for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } LoadFromFile() does all the work of splitting the file into separate lines, and the CommaText property does all the work of parsing the values out of a CSV string. Good luck, - Dennis Back to top Dennis Jones Guest Posted: Mon Mar 28, 2005 2:14 am    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: here is what I have now... String list[4]; //4 element array String name; //file name TStringList *pFile = new TStringList; TStringList *pLine = new TStringList; if(Form1->OpenDialog1->Execute()) { name = Form1->OpenDialog1->FileName; } pFile->LoadFromFile(name); for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } list[0] = pLine->CommaText.SubString(0,6); edtLastName->Text = pLine->CommaText.SubString(0,6); //this works, just not dynamic Lee: You missed the most important part of my message! The CommaText property does ALL the work for you. After CommaText is assigned the an entire line, you can then reference each element of the line via the Strings[] property (hence my comment about each string in pLine)...there is no need to parse it manually with SubString(). For example: // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; // now get each element and put it in an edit box: edtLastName->Text = pLine->Strings[0]; edtFirstName->Text = pLine->Strings[1]; edtMiddleName->Text = pLine->Strings[2]; edtSuffix->Text = pLine->Strings[3]; etc... - Dennis Back to top Lee Gobroski Guest Posted: Mon Mar 28, 2005 4:11 am    Post subject: Re: TParser Dennis, I guess that is what happens when you read things while suffering sleep deprivation!!! you are right I missed that, I'll let you know. Thanks so much Lee "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:424765f8$1 (AT) newsgroups (DOT) borland.com... here is what I have now... String list[4]; //4 element array String name; //file name TStringList *pFile = new TStringList; TStringList *pLine = new TStringList; if(Form1->OpenDialog1->Execute()) { name = Form1->OpenDialog1->FileName; } pFile->LoadFromFile(name); for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } list[0] = pLine->CommaText.SubString(0,6); edtLastName->Text = pLine->CommaText.SubString(0,6); //this works, just not dynamic Lee: You missed the most important part of my message! The CommaText property does ALL the work for you. After CommaText is assigned the an entire line, you can then reference each element of the line via the Strings[] property (hence my comment about each string in pLine)...there is no need to parse it manually with SubString(). For example: // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; // now get each element and put it in an edit box: edtLastName->Text = pLine->Strings[0]; edtFirstName->Text = pLine->Strings[1]; edtMiddleName->Text = pLine->Strings[2]; edtSuffix->Text = pLine->Strings[3]; etc... - Dennis Back to top Dennis Jones Guest Posted: Mon Mar 28, 2005 4:30 am    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: Dennis, I guess that is what happens when you read things while suffering sleep deprivation!!! you are right I missed that, I'll let you know. Thanks so much Lee My pleasure. Happy Easter, - Dennis Back to top Lee Gobroski Guest Posted: Mon Mar 28, 2005 6:06 am    Post subject: Re: TParser Dennis, I hate to be a bother to you... but I have one more question for you. How can I access the first element of the string list. I looked up on the help, and there does not appear to be a way. Thanks for all your help so far. Lee "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:424783f3 (AT) newsgroups (DOT) borland.com... Dennis, I guess that is what happens when you read things while suffering sleep deprivation!!! you are right I missed that, I'll let you know. Thanks so much Lee My pleasure. Happy Easter, - Dennis Back to top Lee Gobroski Guest Posted: Mon Mar 28, 2005 6:54 am    Post subject: Re: TParser Dennis, This is what I have done to solve that issue of changing values in teh edit boxes: TStringList *pFile = new TStringList; //entire file stringlist TStringList *pLine = new TStringList; //single line stringlist String name; //file name int recNum = 0; void refillEditBoxes(int dispRecNums) { pFile->LoadFromFile(name); if (dispRecNums == 0) { recNum = pFile->Count - 1; } if (dispRecNums >= pFile->Count - 1) { recNum = 1; } pLine->CommaText = pFile->Strings[recNum]; Form1->edtLastName->Text = pLine->Strings[0]; Form1->edtFirstName->Text = pLine->Strings[1]; Form1->edtMiddleName->Text = pLine->Strings[2]; Form1->edtCity->Text = pLine->Strings[4]; } //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::btnOpenClick(TObject *Sender) { if(Form1->OpenDialog1->Execute()) { name = Form1->OpenDialog1->FileName; } pFile->LoadFromFile(name); for ( int i=0; i<pFile->Count; ++i ) { // after this line executes, each string in 'pLine' will be one value from the CSV line pLine->CommaText = pFile->Strings[i]; } recNum = pFile->Count; edtLastName->Text = pLine->Strings[0]; edtFirstName->Text = pLine->Strings[1]; edtMiddleName->Text = pLine->Strings[2]; edtCity->Text = pLine->Strings[4]; } //--------------------------------------------------------------------------- void __fastcall TForm1::NextClick(TObject *Sender) { recNum++; refillEditBoxes(recNum); } //--------------------------------------------------------------------------- void __fastcall TForm1::PreviousClick(TObject *Sender) { recNum--; refillEditBoxes(recNum); } //--------------------------------------------------------------------------- Do you know of any other way to do that...??? "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:424783f3 (AT) newsgroups (DOT) borland.com... Dennis, I guess that is what happens when you read things while suffering sleep deprivation!!! you are right I missed that, I'll let you know. Thanks so much Lee My pleasure. Happy Easter, - Dennis Back to top Dennis Jones Guest Posted: Mon Mar 28, 2005 7:58 pm    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: Dennis, I hate to be a bother to you... but I have one more question for you. How can I access the first element of the string list. I looked up on the help, and there does not appear to be a way. The first element is index 0. - Dennis Back to top Dennis Jones Guest Posted: Mon Mar 28, 2005 8:00 pm    Post subject: Re: TParser "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote Quote: Dennis, This is what I have done to solve that issue of changing values in teh edit boxes: <code sipped> Quote: Do you know of any other way to do that...??? Sorry, but I don't quite understand what you are asking. - Dennis Back to top Lee Gobroski Guest Posted: Tue Mar 29, 2005 1:31 am    Post subject: Re: TParser Dennis, I really was not asking anything that time... LOL Hard to believe I know. I understand the first element is index 0, recNum = 0 pLine->CommaText = pFile->Strings[recNum]; The only issue I have with this solution, and I don't know if it can be avoided, is that I need to call on the file every time I want to change the values. can I load the whole file in to memory, and then access it like an array... Thanks Lee "Dennis Jones" <nospam (AT) bogus (DOT) com> wrote Quote: "Lee Gobroski" <gobroski (AT) oddlee (DOT) net> wrote in message news:4247aa05$1 (AT) newsgroups (DOT) borland.com... Dennis, This is what I have done to solve that issue of changing values in teh edit boxes: code sipped Do you know of any other way to do that...??? 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