generated from freudenreichan/info2Praktikum-Wortsalat
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#include "input.h"
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#include <string.h>
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#include <ctype.h>
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// TODO:
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// eine Funktion implementieren, die ein einzelnes Wort aus einer Textdatei (words.txt) einliest und als C-String zurückgibt.
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// HIlfsfunktion: LIest das nächste Wort(Tocken) aus der Datei und gibt es als C-String züruck
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char* readNextWord(FILE *file, char *lineBuffer, unsigned int maxLineLen, int *isNewLineNeeded){
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const char *delimiters = " ,;\t\r\n";
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char *token = NULL;
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//Falls wir schon in einer Zeile sind, Versuche das nächste Word daraus zu holen
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if(!(*isNewLineNeeded)){
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token = strtok(NULL, delimiters);
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}
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while (token == NULL)
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{
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if(fgets(lineBuffer, maxLineLen, file) == NULL)
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{
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// Dateiend (EOF) erreicht
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return NULL;
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}
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token = strtok(lineBuffer, delimiters);
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*isNewLineNeeded = 0;
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}
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return token;
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}
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// Read words from file and store in 'words' array
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int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
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{
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if(file == NULL || words == NULL || maxWordCount == 0){
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return 0;
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}
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char lineBuffer[MAX_LINE_LEN];
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int isNewLineNeeded = 1;
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unsigned int count = 0;
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char *word = NULL;
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while(count < maxWordCount && (word = readNextWord(file, lineBuffer, MAX_LINE_LEN, &isNewLineNeeded)) != NULL)
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{
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//Sicher kopieren mit strncpy und Nulltermination garantieren
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strncpy(words[count], word, MAX_WORD_LEN - 1);
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words[count][MAX_WORD_LEN - 1] = '\0';
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//changing all leter to caplogs
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for(unsigned int i = 0; words[count][i] != '\0'; i++){
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words[count][i] = (char)toupper((unsigned char)words[count][i]);
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}
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count++;
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}
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return (int)count;
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} |