From 28ed5b3524c1ee5245131691b783d897239f5b03 Mon Sep 17 00:00:00 2001 From: Ilari Liusvaara Date: Wed, 9 Dec 2009 17:26:28 +0200 Subject: [PATCH] Support mandatory capabilities Add support for marking capability as mandatory for hosting git version to understand. This is useful for helpers which require various types of assistance from main git binary. Signed-off-by: Ilari Liusvaara Signed-off-by: Junio C Hamano --- Documentation/git-remote-helpers.txt | 5 ++++- transport-helper.c | 25 +++++++++++++++++++------ 2 files changed, 23 insertions(+), 7 deletions(-) diff --git a/Documentation/git-remote-helpers.txt b/Documentation/git-remote-helpers.txt index 5cfdc0cfc5..20a05fe9d8 100644 --- a/Documentation/git-remote-helpers.txt +++ b/Documentation/git-remote-helpers.txt @@ -25,7 +25,10 @@ Commands are given by the caller on the helper's standard input, one per line. 'capabilities':: Lists the capabilities of the helper, one per line, ending - with a blank line. + with a blank line. Each capability may be preceeded with '*'. + This marks them mandatory for git version using the remote + helper to understand (unknown mandatory capability is fatal + error). 'list':: Lists the refs, one per line, in the format " diff --git a/transport-helper.c b/transport-helper.c index a721dc25be..4b17aaa237 100644 --- a/transport-helper.c +++ b/transport-helper.c @@ -93,25 +93,38 @@ static struct child_process *get_helper(struct transport *transport) data->out = xfdopen(helper->out, "r"); while (1) { + const char *capname; + int mandatory = 0; recvline(data, &buf); if (!*buf.buf) break; + + if (*buf.buf == '*') { + capname = buf.buf + 1; + mandatory = 1; + } else + capname = buf.buf; + if (debug) - fprintf(stderr, "Debug: Got cap %s\n", buf.buf); - if (!strcmp(buf.buf, "fetch")) + fprintf(stderr, "Debug: Got cap %s\n", capname); + if (!strcmp(capname, "fetch")) data->fetch = 1; - if (!strcmp(buf.buf, "option")) + else if (!strcmp(capname, "option")) data->option = 1; - if (!strcmp(buf.buf, "push")) + else if (!strcmp(capname, "push")) data->push = 1; - if (!strcmp(buf.buf, "import")) + else if (!strcmp(capname, "import")) data->import = 1; - if (!data->refspecs && !prefixcmp(buf.buf, "refspec ")) { + else if (!data->refspecs && !prefixcmp(capname, "refspec ")) { ALLOC_GROW(refspecs, refspec_nr + 1, refspec_alloc); refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec ")); + } else if (mandatory) { + die("Unknown madatory capability %s. This remote " + "helper probably needs newer version of Git.\n", + capname); } } if (refspecs) { -- 2.47.1