// TODO: Make the linereader more efficient and flexible, and make
// it a standard library function.
static int de_linereader_readnextline(deark *c, struct de_linereader *lr,
char *buf, size_t buf_len, unsigned int flags)
{
int ret;
i64 content_len = 0;
i64 total_len = 0;
buf[0] = '\0';
ret = dbuf_find_line(lr->f, lr->f_pos, &content_len, &total_len);
if(!ret) return 0;
if(content_len > (i64)buf_len-1) {
lr->f_pos += total_len;
return 0;
}
dbuf_read(lr->f, (u8*)buf, lr->f_pos, content_len);
buf[content_len] = '\0';
lr->f_pos += total_len;
return 1;
}
static int read_pam_header_line(deark *c, lctx *d, struct page_ctx *pg, de_int64 pos,
de_int64 *content_len, de_int64 *total_len,
char *linebuf, size_t linebuf_len)
{
int ret;
de_int64 amt_to_read;
linebuf[0]='\0';
ret = dbuf_find_line(c->infile, pos,
content_len, total_len);
if(!ret) return 0;
amt_to_read = *content_len;
if(amt_to_read > (de_int64)(linebuf_len-1)) amt_to_read = (de_int64)(linebuf_len-1);
de_read((de_byte*)linebuf, pos, amt_to_read);
*content_len = amt_to_read;
linebuf[amt_to_read] = '\0';
return 1;
}
