State_Exercise.c

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#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
 
#include "helpers/dynamicstring.h"
#include "helpers/split.h"
#include "helpers/strdup.h"
 
#include "State_RemoveComments.h"
 
#include "State_Exercise.h"
 
//=============================================================================
//=============================================================================
 
static void _State_DisplayText(const char* textToDisplay)
{
    SplitList lines = { 0 };
    char* text = STRDUP(textToDisplay);
    if (text != NULL)
    {
        split(text, "\n", &lines);
        int lineNumber = 1;
        for (size_t index = 0; index < lines.strings_count; index++)
        {
            printf("    %2d) %s\n", lineNumber, lines.strings[index]);
            lineNumber++;
        }
        free(text);
    }
    else
    {
        printf("  Error!  Out of memory duplicating text to display with lines!\n");
    }
}
 
 
//=============================================================================
//=============================================================================
 
static const char* textToFilter =
"/*####################  Block Comment  #################################*/\n"
"//####################  Line Comment  ####################################\n"
"// A comment.  /* A nested comment */\n"
"\n"
"void State_Exercise() // An exercise in state machines\n"
"{\n"
"    char character = '\\\"';\n"
"    printf(\"\\n\");\n"
"    printf(\"\\\"State\\\" /*Exercise*/\\n\");\n"
"\n"
"    bool success = State_RemoveComments(textToFilter, &filteredText);\n"
"\n"
"    printf(\"\\t\\tDone. //(No, really)//\\n\");\n"
"}";
 
 
// ! [Using State in C]
void State_Exercise(void)
{
    printf("\nState_Exercise\n");
 
    printf("  Text to filter:\n");
    _State_DisplayText(textToFilter);
 
    printf("  Filtering text...\n");
    DynamicString filteredText = { 0 };
    bool success = State_RemoveComments(textToFilter, &filteredText);
    if (success)
    {
        printf("  Filtered text:\n");
        _State_DisplayText(filteredText.string);
    }
 
    DynamicString_Clear(&filteredText);
 
    printf("  Done.\n");
}
// ! [Using State in C]