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#include "common.h"
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <strings.h>
#include <unistd.h>
void writef(char *format, ...)
{
char buf[255 + 1];
va_list args;
va_start(args, format);
vsnprintf(buf, sizeof(buf), format, args);
va_end(args);
int n = 0;
while (*(buf + n) != 0)
n++;
write(0, buf, n);
}
u16 str_len(char *str)
{
u16 i = 0;
while (str[i])
i++;
return i;
}
void str_cpy(char *to, char *from)
{
while ((*to++ = *from++))
;
}
u8 save_message(struct message *msg, FILE *f)
{
u8 err = 0;
u16 len;
if (msg->text == NULL) {
len = 0;
msg->text = ""; // TODO: Error empty message should not be allowed.
} else {
len = str_len(msg->text);
}
if (len == 0)
err = 1;
fwrite(&msg->timestamp, sizeof(*msg->timestamp) * MESSAGE_TIMESTAMP_LEN, 1, f);
fwrite(&msg->author, sizeof(*msg->author) * MESSAGE_AUTHOR_LEN, 1, f);
fwrite(&len, sizeof(len), 1, f);
fputs(msg->text, f);
return err;
}
u8 load_message(struct message *msg, FILE *f)
{
fread(msg, sizeof(*msg->timestamp) * MESSAGE_TIMESTAMP_LEN + sizeof(*msg->author) * MESSAGE_AUTHOR_LEN, 1, f);
u16 len;
fread(&len, sizeof(len), 1, f);
if (len == 0) {
// TODO: Error: empty message should not be allowed
// empty message
msg->text = "";
return 1;
}
char txt[len];
fgets(txt, len, f);
msg->text = txt;
return 0;
}
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