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Added 'reset' command to clear a branch's tree.
Sometimes an import frontend may need to work with a temporary branch which will actually contain many different branches over the life of the import. This is especially useful when the frontend needs to create a tag from a set of file versions which are otherwise never a commit. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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@ -6,6 +6,7 @@ Format of STDIN stream:
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cmd ::= new_blob
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| new_commit
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| new_tag
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| reset_branch
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;
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new_blob ::= 'blob' lf
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@ -34,6 +35,8 @@ Format of STDIN stream:
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tag_msg;
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tag_msg ::= data;
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reset_branch ::= 'reset' sp ref_str lf;
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# note: the first idnum in a stream should be 1 and subsequent
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# idnums should not have gaps between values as this will cause
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# the stream parser to reserve space for the gapped values. An
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@ -1604,6 +1607,33 @@ static void cmd_new_tag()
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}
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}
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static void cmd_reset_branch()
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{
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struct branch *b;
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char *str_uq;
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const char *endp;
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char *sp;
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/* Obtain the branch name from the rest of our command */
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sp = strchr(command_buf.buf, ' ') + 1;
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str_uq = unquote_c_style(sp, &endp);
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if (str_uq) {
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if (*endp)
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die("Garbage after ref in: %s", command_buf.buf);
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sp = str_uq;
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}
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b = lookup_branch(sp);
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if (b) {
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b->last_commit = 0;
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if (b->branch_tree.tree) {
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release_tree_content_recursive(b->branch_tree.tree);
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b->branch_tree.tree = NULL;
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}
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}
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if (str_uq)
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free(str_uq);
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}
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static const char fast_import_usage[] =
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"git-fast-import [--objects=n] [--depth=n] [--active-branches=n] [--export-marks=marks.file] [--branch-log=log] temp.pack";
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@ -1673,6 +1703,8 @@ int main(int argc, const char **argv)
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cmd_new_commit();
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else if (!strncmp("tag ", command_buf.buf, 4))
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cmd_new_tag();
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else if (!strncmp("reset ", command_buf.buf, 6))
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cmd_reset_branch();
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else
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die("Unsupported command: %s", command_buf.buf);
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}
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