return 0;
}
+int buffer_fdinit(struct line_buffer *buf, int fd)
+{
+ buf->infile = fdopen(fd, "r");
+ if (!buf->infile)
+ return -1;
+ return 0;
+}
+
+int buffer_tmpfile_init(struct line_buffer *buf)
+{
+ buf->infile = tmpfile();
+ if (!buf->infile)
+ return -1;
+ return 0;
+}
+
int buffer_deinit(struct line_buffer *buf)
{
int err;
return err;
}
+FILE *buffer_tmpfile_rewind(struct line_buffer *buf)
+{
+ rewind(buf->infile);
+ return buf->infile;
+}
+
+long buffer_tmpfile_prepare_to_read(struct line_buffer *buf)
+{
+ long pos = ftell(buf->infile);
+ if (pos < 0)
+ return error("ftell error: %s", strerror(errno));
+ if (fseek(buf->infile, 0, SEEK_SET))
+ return error("seek error: %s", strerror(errno));
+ return pos;
+}
+
+int buffer_ferror(struct line_buffer *buf)
+{
+ return ferror(buf->infile);
+}
+
int buffer_read_char(struct line_buffer *buf)
{
return fgetc(buf->infile);
strbuf_fread(sb, size, buf->infile);
}
-void buffer_copy_bytes(struct line_buffer *buf, uint32_t len)
+off_t buffer_copy_bytes(struct line_buffer *buf, off_t nbytes)
{
char byte_buffer[COPY_BUFFER_LEN];
- uint32_t in;
- while (len > 0 && !feof(buf->infile) && !ferror(buf->infile)) {
- in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
+ off_t done = 0;
+ while (done < nbytes && !feof(buf->infile) && !ferror(buf->infile)) {
+ off_t len = nbytes - done;
+ size_t in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
in = fread(byte_buffer, 1, in, buf->infile);
- len -= in;
+ done += in;
fwrite(byte_buffer, 1, in, stdout);
- if (ferror(stdout)) {
- buffer_skip_bytes(buf, len);
- return;
- }
+ if (ferror(stdout))
+ return done + buffer_skip_bytes(buf, nbytes - done);
}
+ return done;
}
-void buffer_skip_bytes(struct line_buffer *buf, uint32_t len)
+off_t buffer_skip_bytes(struct line_buffer *buf, off_t nbytes)
{
char byte_buffer[COPY_BUFFER_LEN];
- uint32_t in;
- while (len > 0 && !feof(buf->infile) && !ferror(buf->infile)) {
- in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
- in = fread(byte_buffer, 1, in, buf->infile);
- len -= in;
+ off_t done = 0;
+ while (done < nbytes && !feof(buf->infile) && !ferror(buf->infile)) {
+ off_t len = nbytes - done;
+ size_t in = len < COPY_BUFFER_LEN ? len : COPY_BUFFER_LEN;
+ done += fread(byte_buffer, 1, in, buf->infile);
}
+ return done;
}
void buffer_reset(struct line_buffer *buf)