Lab_Files_Part2

#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <string.h>
#include <iostream>

typedef struct {
	char** text;
	size_t sentences = 20;
} TEXT;

int getTextFromFile(TEXT*, FILE*, const char[40]);
void showAllText(TEXT*);
void showSentencesContains(TEXT*, char[80]);
bool strCheck(const char*, const char*);
int strStr(const char*, const char*);

int main()
{
	FILE* file = NULL;
	TEXT* Text = new TEXT;
	char word[80];
	const char fileName[40] = "Text.txt";

	printf("Please, input the word: ");
	scanf("%s", word);

	if (getTextFromFile(Text, file, fileName))
		//showAllText(Text);
		showSentencesContains(Text, word);
	else
		puts("#ERROR: Can't read data from file");

	system("pause");
	return 0;
}

int getTextFromFile(TEXT* Text, FILE* file, const char fileName[40])
{
	if ((file = fopen(fileName, "r")) == NULL)
	{
		perror("Can't open file to read");
		return 0;
	}
	else
	{
		Text->text = (char**)malloc(sizeof(char*)*Text->sentences);
		char c;
		char currentString[1000] = "";
		size_t i = 0;
		size_t j = 0;
		do
		{
			c = fgetc(file);
			if (c == '.' && i < Text->sentences)
			{
				currentString[j] = '\0';
				Text->text[i] = (char*)malloc(sizeof(char) * (j + 1));
				strcpy(Text->text[i], currentString);
				i++;
				j = 0;
			}
			else if (c == '.' && i == Text->sentences)
			{
				Text->sentences *= 2;
				Text->text = (char**)realloc(Text->text ,sizeof(char*)*Text->sentences);

				currentString[j] = '\0';
				Text->text[i] = (char*)malloc(sizeof(char) * (j + 1));
				strcpy(Text->text[i], currentString);
				i++;
				j = 0;
			}
			else if (c == '\n' || c == '\0')
			{
				c = ' ';
				currentString[j] = c;
				j++;
			}
			else
			{
				currentString[j] = c;
				j++;
			}
		} while (c != EOF);
		fclose(file);
		return 1;
	}
}

void showAllText(TEXT* Text)
{
	for (int i = 0; i < Text->sentences; i++)
	{
		printf("%s\n", Text->text[i]);
	}
}

void showSentencesContains(TEXT* Text, char word[80])
{
	bool bingo = false;
	for (int i = 0; i < Text->sentences; i++)
	{
		for (int j = 0; ( j < strlen(Text->text[i]) - strlen(word) ) && !bingo; j++)
		{
			if ( strStr(Text->text[i], word) != -1)
			{
				printf("%s\n\n", Text->text[i]);
				bingo = true;
			}
		}

		bingo = false;
	}
}

bool strCheck(const char *p, const char *pattern)
{
	for (; *pattern != '\0'; pattern++)
	{
		if (*p != *pattern)
			return false;
		p++;
	}
	return true;
}

int strStr(const char *text, const char *pattern)
{
	if (*pattern == '\0')
		return 0;
	else if (*text == '\0')
		return -1;
	int N = strlen(text);
	for (int i = 0; i < N; i++)
	{
		if (strCheck(text + i, pattern))
			return i;
	}
	return -1;
}