This patch parses the trailer command line arguments
and put the result into an arg_tok doubly linked
list.

Signed-off-by: Christian Couder <chrisc...@tuxfamily.org>
---
 trailer.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/trailer.c b/trailer.c
index e7d8244..89377f2 100644
--- a/trailer.c
+++ b/trailer.c
@@ -363,3 +363,80 @@ static int git_trailer_config(const char *conf_key, const 
char *value, void *cb)
        }
        return 0;
 }
+
+static void parse_trailer(struct strbuf *tok, struct strbuf *val, const char 
*trailer)
+{
+       char *end = strchr(trailer, '=');
+       if (!end)
+               end = strchr(trailer, ':');
+       if (end) {
+               strbuf_add(tok, trailer, end - trailer);
+               strbuf_trim(tok);
+               strbuf_addstr(val, end + 1);
+               strbuf_trim(val);
+       } else {
+               strbuf_addstr(tok, trailer);
+               strbuf_trim(tok);
+       }
+}
+
+static struct trailer_item *create_trailer_item(const char *string)
+{
+       struct strbuf tok = STRBUF_INIT;
+       struct strbuf val = STRBUF_INIT;
+       struct trailer_item *new;
+       struct trailer_item *item;
+       int tok_alnum_len;
+
+       parse_trailer(&tok, &val, string);
+
+       tok_alnum_len = alnum_len(tok.buf, tok.len);
+
+       /* Lookup if the token matches something in the config */
+       for (item = first_conf_item; item; item = item->next) {
+               if (!strncasecmp(tok.buf, item->conf->key, tok_alnum_len) ||
+                   !strncasecmp(tok.buf, item->conf->name, tok_alnum_len)) {
+                       new = xcalloc(sizeof(struct trailer_item), 1);
+                       new->conf = item->conf;
+                       new->token = xstrdup(item->conf->key);
+                       new->value = strbuf_detach(&val, NULL);
+                       strbuf_release(&tok);
+                       return new;
+               }
+       }
+
+       new = xcalloc(sizeof(struct trailer_item), 1);
+       new->conf = xcalloc(sizeof(struct conf_info), 1);
+       new->token = strbuf_detach(&tok, NULL);
+       new->value = strbuf_detach(&val, NULL);
+
+       return new;
+}
+
+static void add_trailer_item(struct trailer_item **first,
+                            struct trailer_item **last,
+                            struct trailer_item *new)
+{
+       if (!*last) {
+               *first = new;
+               *last = new;
+       } else {
+               (*last)->next = new;
+               new->previous = *last;
+               *last = new;
+       }
+}
+
+static struct trailer_item *process_command_line_args(int argc, const char 
**argv)
+{
+       int i;
+       struct trailer_item *arg_tok_first = NULL;
+       struct trailer_item *arg_tok_last = NULL;
+
+       for (i = 0; i < argc; i++) {
+               struct trailer_item *new = create_trailer_item(argv[i]);
+               add_trailer_item(&arg_tok_first, &arg_tok_last, new);
+       }
+
+       return arg_tok_first;
+}
-- 
1.8.5.2.201.gacc5987


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