Parse the trailer command line arguments and put
the result into an arg_tok doubly linked list.
Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
trailer.c | 117 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 117 insertions(+)
diff --git a/trailer.c b/trailer.c
index c7c0f54..89ebff1 100644
--- a/trailer.c
+++ b/trailer.c
@@ -391,3 +391,120 @@ static int git_trailer_config(const char *conf_key, const char *value, void *cb)
}
return 0;
}
+
+static int parse_trailer(struct strbuf *tok, struct strbuf *val, const char *trailer)
+{
+ size_t len = strcspn(trailer, "=:");
+ if (len == 0)
+ return error(_("empty trailer token in trailer '%s'"), trailer);
+ if (len < strlen(trailer)) {
+ strbuf_add(tok, trailer, len);
+ strbuf_trim(tok);
+ strbuf_addstr(val, trailer + len + 1);
+ strbuf_trim(val);
+ } else {
+ strbuf_addstr(tok, trailer);
+ strbuf_trim(tok);
+ }
+ return 0;
+}
+
+
+static void duplicate_conf(struct conf_info *dst, struct conf_info *src)
+{
+ *dst = *src;
+ if (src->name)
+ dst->name = xstrdup(src->name);
+ if (src->key)
+ dst->key = xstrdup(src->key);
+ if (src->command)
+ dst->command = xstrdup(src->command);
+}
+
+static const char *token_from_item(struct trailer_item *item)
+{
+ if (item->conf.key)
+ return item->conf.key;
+
+ return item->conf.name;
+}
+
+static struct trailer_item *new_trailer_item(struct trailer_item *conf_item,
+ char *tok, char *val)
+{
+ struct trailer_item *new = xcalloc(sizeof(*new), 1);
+ new->value = val;
+
+ if (conf_item) {
+ duplicate_conf(&new->conf, &conf_item->conf);
+ new->token = xstrdup(token_from_item(conf_item));
+ free(tok);
+ } else
+ new->token = tok;
+
+ return new;
+}
+
+static int token_matches_item(const char *tok, struct trailer_item *item, int alnum_len)
+{
+ if (!strncasecmp(tok, item->conf.name, alnum_len))
+ return 1;
+ return item->conf.key ? !strncasecmp(tok, item->conf.key, alnum_len) : 0;
+}
+
+static struct trailer_item *create_trailer_item(const char *string)
+{
+ struct strbuf tok = STRBUF_INIT;
+ struct strbuf val = STRBUF_INIT;
+ struct trailer_item *item;
+ int tok_alnum_len;
+
+ if (parse_trailer(&tok, &val, string))
+ return NULL;
+
+ 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 (token_matches_item(tok.buf, item, tok_alnum_len)) {
+ strbuf_release(&tok);
+ return new_trailer_item(item,
+ NULL,
+ strbuf_detach(&val, NULL));
+ }
+ }
+
+ return new_trailer_item(NULL,
+ strbuf_detach(&tok, NULL),
+ strbuf_detach(&val, NULL));
+}
+
+static void add_trailer_item(struct trailer_item **first,
+ struct trailer_item **last,
+ struct trailer_item *new)
+{
+ if (!new)
+ return;
+ 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;
+}
--
1.9.0.163.g8ca203c
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