merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 0 insertions, 126 deletions

diff --git a/third_party/git/vcs-svn/line_buffer.c b/third_party/git/vcs-svn/line_buffer.c
deleted file mode 100644
index e416caf8a4fc..000000000000
--- a/third_party/git/vcs-svn/line_buffer.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- * Licensed under a two-clause BSD-style license.
- * See LICENSE for details.
- */
-
-#include "git-compat-util.h"
-#include "line_buffer.h"
-#include "strbuf.h"
-
-#define COPY_BUFFER_LEN 4096
-
-int buffer_init(struct line_buffer *buf, const char *filename)
-{
-	buf->infile = filename ? fopen(filename, "r") : stdin;
-	if (!buf->infile)
-		return -1;
-	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;
-	if (buf->infile == stdin)
-		return ferror(buf->infile);
-	err = ferror(buf->infile);
-	err |= fclose(buf->infile);
-	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_errno("ftell error");
-	if (fseek(buf->infile, 0, SEEK_SET))
-		return error_errno("seek error");
-	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);
-}
-
-/* Read a line without trailing newline. */
-char *buffer_read_line(struct line_buffer *buf)
-{
-	char *end;
-	if (!fgets(buf->line_buffer, sizeof(buf->line_buffer), buf->infile))
-		/* Error or data exhausted. */
-		return NULL;
-	end = buf->line_buffer + strlen(buf->line_buffer);
-	if (end[-1] == '\n')
-		end[-1] = '\0';
-	else if (feof(buf->infile))
-		; /* No newline at end of file.  That's fine. */
-	else
-		/*
-		 * Line was too long.
-		 * There is probably a saner way to deal with this,
-		 * but for now let's return an error.
-		 */
-		return NULL;
-	return buf->line_buffer;
-}
-
-size_t buffer_read_binary(struct line_buffer *buf,
-				struct strbuf *sb, size_t size)
-{
-	return strbuf_fread(sb, size, buf->infile);
-}
-
-off_t buffer_copy_bytes(struct line_buffer *buf, off_t nbytes)
-{
-	char byte_buffer[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);
-		done += in;
-		fwrite(byte_buffer, 1, in, stdout);
-		if (ferror(stdout))
-			return done + buffer_skip_bytes(buf, nbytes - done);
-	}
-	return done;
-}
-
-off_t buffer_skip_bytes(struct line_buffer *buf, off_t nbytes)
-{
-	char byte_buffer[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;
-		done += fread(byte_buffer, 1, in, buf->infile);
-	}
-	return done;
-}