string parsing ? - BlitzCoder.net

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Socoder -> C/C++/C#/Other -> string parsing ?
Wed, 14 Nov 2007, 18:22
spinal	I am trying to load text from a file onto the screen, my first attemp was working fine, character by character, but no I want to check the text word at a time to get wrapping working properly. my code is as follows - // Includes #include <PA9.h> // Include for PA_Lib #include <fat.h> #include <sys/dir.h> // Functions long FileSize(char* filename); // Function: main() int main(int argc, char ** argv) { PA_Init(); // Initializes PA_Lib PA_InitVBL(); // Initializes a standard VBL fatInitDefault(); //Initialise fat library PA_Init8bitBg(0, 3); // Use bitmap layer PA_Init8bitBg(1, 3); // for both screens int screen = 1; // which screen to use char filename[256]="text.txt"; // to hold a full filename and string terminator char filetext[1000]; // read 100 characters at a time int font_number=2; // use font number 1 PA_SetBgPalCol(0, 0, PA_RGB(31, 31, 31)); PA_SetBgPalCol(0, 1, PA_RGB(0, 0, 0)); PA_SetBgPalCol(1, 0, PA_RGB(31, 31, 31)); PA_SetBgPalCol(1, 1, PA_RGB(0, 0, 0)); long length_of_file = FileSize(filename); long current_pos=0; FILE* testRead = fopen (filename, "rb"); //rb = read // character x and y int lx=5,ly=police8bitheight[font_number]+2; int temp=0,temp1=0; int length_of_word=0; // how many pixels long the word is while(current_pos<length_of_file-1) { fread(filetext, 1,100, testRead);// read 100 bytes of text file bool isword=false; temp=0; char wurd[100]={0}; // use a char for each word while(temp<100) { while(isword==false) { if(filetext[temp]!=32) // if current letter is not space { wurd[temp1]=filetext[temp]; // coppy current letter to word length_of_word+=pa8bitdefaultsize[font_number][(u8)wurd[temp1]]; // update length accordingly temp++; temp1++; current_pos++; }else{ wurd[temp1]=0; // terminate the string isword=true; // tell loop a word is found temp1=0; } } if(lx+length_of_word<=182) // if we are still on the screen { // draw the word and update position PA_SmartText(screen,lx,ly,182,240,wurd,1,font_number,3,1000); lx+=length_of_word; }else{ ly+=police8bitheight[font_number]+2; lx=5; PA_SmartText(screen,lx,ly,182,240,wurd,1,font_number,3,1000);// print the word on the screen at lx,ly lx+=length_of_word; length_of_word=0; } if(ly>240) { if(screen==1) { lx=5; ly=police8bitheight[font_number]+2; screen=0; }else{ PA_WaitFor(Pad.Newpress.A); PA_Clear8bitBg(0); PA_Clear8bitBg(1); lx=5; ly=police8bitheight[font_number]+2; screen=1; } } }// temp<100 // fseek(&filetext, current_pos, SEEK_SET); } fclose(testRead); // Infinite loop to keep the program running while (1) { PA_WaitForVBL(); } return 0; } // End of main() long FileSize(char* filename) { struct stat st; stat(filename, &st); return st.st_size; } --v When I run it, it just repeats the first word a few times. My current guess is that I have a bunch of the code the wrong way around, or perhaps its just completely wrong. Any ideas? \|edit\| Jay got it working a lot better, but it doesn't seem to be getting to the second read, i get a couple of line of text and thats it. // Includes #include <PA9.h> // Include for PA_Lib #include <fat.h> #include <sys/dir.h> // Functions long FileSize(char* filename); // Function: main() int main(int argc, char ** argv) { PA_Init(); // Initializes PA_Lib PA_InitVBL(); // Initializes a standard VBL fatInitDefault(); //Initialise fat library PA_Init8bitBg(0, 3); // Use bitmap layer PA_Init8bitBg(1, 3); // for both screens int screen = 1; // which screen to use char filename[256]="text.txt"; // to hold a full filename and string terminator char filetext[1000]; // read 100 characters at a time int font_number=2; // use font number 1 PA_SetBgPalCol(0, 0, PA_RGB(31, 31, 31)); PA_SetBgPalCol(0, 1, PA_RGB(0, 0, 0)); PA_SetBgPalCol(1, 0, PA_RGB(31, 31, 31)); PA_SetBgPalCol(1, 1, PA_RGB(0, 0, 0)); long length_of_file = FileSize(filename); long current_pos=0; FILE* testRead = fopen (filename, "rb"); //rb = read // character x and y int lx=5,ly=police8bitheight[font_number]+2; int temp=0,temp1=0; int length_of_word=0; // how many pixels long the word is while(current_pos<length_of_file-1) { fread(filetext, 1,100, testRead);// read 100 bytes of text file bool isword=false; temp=0; char wurd[100]={0}; // use a char for each word temp=0; while(temp<100) { isword=false; length_of_word=pa8bitdefaultsize[font_number][' ']; while(isword==false) { if(filetext[temp]!=32 && filetext[temp]!=10) // if current letter is not space { wurd[temp1]=filetext[temp]; // coppy current letter to word length_of_word+=pa8bitdefaultsize[font_number][(u8)wurd[temp1]]; // update length accordingly temp++; temp1++; current_pos++; }else{ wurd[temp1]=0; // terminate the string isword=true; // tell loop a word is found temp1=0; temp++; current_pos++; } } if(lx+length_of_word<=182) // if we are still on the screen { // draw the word and update position PA_SmartText(screen,lx,ly,182,240,wurd,1,font_number,3,100); lx+=length_of_word; }else{ //if we are not on the screen, move down a line ly+=police8bitheight[font_number]+2; lx=5; PA_SmartText(screen,lx,ly,182,240,wurd,1,font_number,3,100); lx+=length_of_word; length_of_word=0; } if(ly>240) { if(screen==1) { lx=5; ly=police8bitheight[font_number]+2; screen=0; }else{ PA_WaitFor(Pad.Newpress.A); PA_Clear8bitBg(0); PA_Clear8bitBg(1); lx=5; ly=police8bitheight[font_number]+2; screen=1; } } }// temp<100 }//current_pos fclose(testRead); // Infinite loop to keep the program running while (1) { PA_WaitForVBL(); } return 0; } // End of main() long FileSize(char* filename) { struct stat st; stat(filename, &st); return st.st_size; } --v anyone? -=-=- Check out my excellent homepage!