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efc749b48f
The line_buffer library silently flags input errors until
buffer_deinit time; unfortunately, by that point usually errno is
invalid. Expose the error flag so callers can check for and
report errors early for easy debugging.
some_error_prone_operation(...);
if (buffer_ferror(buf))
return error("input error: %s", strerror(errno));
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
32 lines
1 KiB
C
32 lines
1 KiB
C
#ifndef LINE_BUFFER_H_
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#define LINE_BUFFER_H_
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#include "strbuf.h"
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#define LINE_BUFFER_LEN 10000
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struct line_buffer {
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char line_buffer[LINE_BUFFER_LEN];
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struct strbuf blob_buffer;
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FILE *infile;
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};
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#define LINE_BUFFER_INIT {"", STRBUF_INIT, NULL}
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int buffer_init(struct line_buffer *buf, const char *filename);
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int buffer_fdinit(struct line_buffer *buf, int fd);
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int buffer_deinit(struct line_buffer *buf);
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void buffer_reset(struct line_buffer *buf);
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int buffer_tmpfile_init(struct line_buffer *buf);
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FILE *buffer_tmpfile_rewind(struct line_buffer *buf); /* prepare to write. */
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long buffer_tmpfile_prepare_to_read(struct line_buffer *buf);
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int buffer_ferror(struct line_buffer *buf);
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char *buffer_read_line(struct line_buffer *buf);
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char *buffer_read_string(struct line_buffer *buf, uint32_t len);
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int buffer_read_char(struct line_buffer *buf);
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void buffer_read_binary(struct line_buffer *buf, struct strbuf *sb, uint32_t len);
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void buffer_copy_bytes(struct line_buffer *buf, uint32_t len);
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void buffer_skip_bytes(struct line_buffer *buf, uint32_t len);
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#endif
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