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#define READLINE_VALID_CHAR(C) (((u8)(C) >= 0x20 && (u8)(C) < 0x7F) || (C) == '\n')
StringView
read_line(FILE *fd, char delimiter) {
#define RL_BUF_SIZE KB(64)
static char readline_buf[RL_BUF_SIZE];
// Clear buffer.
for (size_t i = 0; i < RL_BUF_SIZE; i++) {
readline_buf[i] = 0;
}
// Barebones readline implementation.
size_t n = 0;
char c;
while ((c = getc(fd)) != delimiter) {
if (c == '\b') {
readline_buf[n] = '\0';
n--;
} else if (READLINE_VALID_CHAR(c) && n < RL_BUF_SIZE) {
readline_buf[n] = c;
n++;
}
}
return (StringView){.start = (char *)&readline_buf, .n = n};
}
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