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| #include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define BEGIN "begin:vcalendar"
#define END "end:vcalendar"
#define TMP_FILE "tmp_calend.txt"
#define BUF_SIZE 50
static void remove_cr (char * str)
{
char * p = strchr (str, '\n');
if (p != NULL)
{
*p = 0;
}
}
int main (void)
{
FILE * p_src = NULL;
FILE * p_dest = NULL;
char buffer [BUF_SIZE];
p_src = fopen ("calend.txt", "r");
if (p_src == NULL)
{
fprintf (stderr, "Impossible d'ouvrir le fichier \"calend.txt\"\n");
exit (EXIT_FAILURE);
}
p_dest = fopen (TMP_FILE, "w");
if (p_src == NULL)
{
fprintf (stderr, "Impossible d'ouvrir le fichier \"%s\"\n", TMP_FILE);
exit (EXIT_FAILURE);
}
while ((fgets (buffer, BUF_SIZE, p_src)) != NULL)
{
remove_cr (buffer);
if (strcmp (buffer, END) == 0)
{
fprintf (p_dest, "begin:vevent\n");
fprintf (p_dest, "event2\n");
fprintf (p_dest, "end:vevent\n");
fprintf (p_dest, "%s", END);
}
else
{
fprintf (p_dest, "%s\n", buffer);
}
}
fclose (p_src);
fclose (p_dest);
remove ("calend.txt");
rename (TMP_FILE, "calend.txt");
return EXIT_SUCCESS;
} |
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