convert some config callbacks to parse_config_key

diff --git a/archive-tar.c b/archive-tar.c
index dc91c6b50d56ad8fd9921d0e47f5b45cafdcfc4d..719b6298e6abf9c9e9e8009ec49dfc76d0d9e49b 100644 (file)
--- a/archive-tar.c
+++ b/archive-tar.c
@@ -139,13 +139,13 @@ static void strbuf_append_ext_header(struct strbuf *sb, const char *keyword,
 
 static unsigned int ustar_header_chksum(const struct ustar_header *header)
 {
-       const char *p = (const char *)header;
+       const unsigned char *p = (const unsigned char *)header;
        unsigned int chksum = 0;
-       while (p < header->chksum)
+       while (p < (const unsigned char *)header->chksum)
                chksum += *p++;
        chksum += sizeof(header->chksum) * ' ';
        p += sizeof(header->chksum);
-       while (p < (const char *)header + sizeof(struct ustar_header))
+       while (p < (const unsigned char *)header + sizeof(struct ustar_header))
                chksum += *p++;
        return chksum;
 }
@@ -153,6 +153,8 @@ static unsigned int ustar_header_chksum(const struct ustar_header *header)
 static size_t get_path_prefix(const char *path, size_t pathlen, size_t maxlen)
 {
        size_t i = pathlen;
+       if (i > 1 && path[i - 1] == '/')
+               i--;
        if (i > maxlen)
                i = maxlen;
        do {
@@ -325,21 +327,13 @@ static struct archiver *find_tar_filter(const char *name, int len)
 static int tar_filter_config(const char *var, const char *value, void *data)
 {
        struct archiver *ar;
-       const char *dot;
        const char *name;
        const char *type;
        int namelen;
 
-       if (prefixcmp(var, "tar."))
-               return 0;
-       dot = strrchr(var, '.');
-       if (dot == var + 9)
+       if (parse_config_key(var, "tar", &name, &namelen, &type) < 0 || !name)
                return 0;
 
-       name = var + 4;
-       namelen = dot - name;
-       type = dot + 1;
-
        ar = find_tar_filter(name, namelen);
        if (!ar) {
                ar = xcalloc(1, sizeof(*ar));