From 2c6a403d96cd5d31f1638679502f06e2b953647f Mon Sep 17 00:00:00 2001 From: "brian m. carlson" Date: Mon, 25 May 2020 19:58:52 +0000 Subject: connect: add function to parse multiple v1 capability values In a capability response, we can have multiple symref entries. In the future, we will also allow for multiple hash algorithms to be specified. To avoid duplication, expand the parse_feature_value function to take an optional offset where the parsing should begin next time. Add a wrapper function that allows us to query the next server feature value, and use it in the existing symref parsing code. Signed-off-by: brian m. carlson Signed-off-by: Junio C Hamano --- connect.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) (limited to 'connect.c') diff --git a/connect.c b/connect.c index ccc5274189..2b55a32d4d 100644 --- a/connect.c +++ b/connect.c @@ -18,7 +18,8 @@ static char *server_capabilities_v1; static struct argv_array server_capabilities_v2 = ARGV_ARRAY_INIT; -static const char *parse_feature_value(const char *, const char *, int *); +static const char *parse_feature_value(const char *, const char *, int *, int *); +static const char *next_server_feature_value(const char *feature, int *len, int *offset); static int check_ref(const char *name, unsigned int flags) { @@ -180,17 +181,16 @@ reject: static void annotate_refs_with_symref_info(struct ref *ref) { struct string_list symref = STRING_LIST_INIT_DUP; - const char *feature_list = server_capabilities_v1; + int offset = 0; - while (feature_list) { + while (1) { int len; const char *val; - val = parse_feature_value(feature_list, "symref", &len); + val = next_server_feature_value("symref", &len, &offset); if (!val) break; parse_one_symref_info(&symref, val, len); - feature_list = val + 1; } string_list_sort(&symref); @@ -452,7 +452,7 @@ struct ref **get_remote_refs(int fd_out, struct packet_reader *reader, return list; } -static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp) +static const char *parse_feature_value(const char *feature_list, const char *feature, int *lenp, int *offset) { int len; @@ -460,6 +460,8 @@ static const char *parse_feature_value(const char *feature_list, const char *fea return NULL; len = strlen(feature); + if (offset) + feature_list += *offset; while (*feature_list) { const char *found = strstr(feature_list, feature); if (!found) @@ -474,9 +476,14 @@ static const char *parse_feature_value(const char *feature_list, const char *fea } /* feature with a value (e.g., "agent=git/1.2.3") */ else if (*value == '=') { + int end; + value++; + end = strcspn(value, " \t\n"); if (lenp) - *lenp = strcspn(value, " \t\n"); + *lenp = end; + if (offset) + *offset = value + end - feature_list; return value; } /* @@ -491,12 +498,17 @@ static const char *parse_feature_value(const char *feature_list, const char *fea int parse_feature_request(const char *feature_list, const char *feature) { - return !!parse_feature_value(feature_list, feature, NULL); + return !!parse_feature_value(feature_list, feature, NULL, NULL); +} + +static const char *next_server_feature_value(const char *feature, int *len, int *offset) +{ + return parse_feature_value(server_capabilities_v1, feature, len, offset); } const char *server_feature_value(const char *feature, int *len) { - return parse_feature_value(server_capabilities_v1, feature, len); + return parse_feature_value(server_capabilities_v1, feature, len, NULL); } int server_supports(const char *feature) -- cgit v1.2.3