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| | #include "cache.h"
#include "metacommit-parser.h"
#include "commit.h"
/*
* Search the commit buffer for a line starting with the given key. Unlike
* find_commit_header, this also searches the commit message body.
*/
static const char *find_key(const char *msg, const char *key, size_t *out_len)
{
int key_len = strlen(key);
const char *line = msg;
while (line) {
const char *eol = strchrnul(line, '\n');
if (eol - line > key_len &&
!strncmp(line, key, key_len) &&
line[key_len] == ' ') {
*out_len = eol - line - key_len - 1;
return line + key_len + 1;
}
line = *eol ? eol + 1 : NULL;
}
return NULL;
}
static struct commit *get_commit_by_index(struct commit_list *to_search, int index)
{
while (to_search && index) {
to_search = to_search->next;
--index;
}
return to_search->item;
}
/*
* Writes the content parent's object id to "content".
* Returns the metacommit type. See the METACOMMIT_TYPE_* constants.
*/
int get_metacommit_content(
struct commit *commit, struct object_id *content)
{
const char *buffer = get_commit_buffer(commit, NULL);
size_t parent_types_size;
const char *parent_types = find_key(buffer, "parent-type",
&parent_types_size);
const char *end;
int index = 0;
int ret;
struct commit *content_parent;
if (!parent_types) {
return METACOMMIT_TYPE_NONE;
}
end = &(parent_types[parent_types_size]);
while (1) {
char next = *parent_types;
if (next == ' ') {
index++;
}
if (next == 'c') {
ret = METACOMMIT_TYPE_NORMAL;
break;
}
if (next == 'a') {
ret = METACOMMIT_TYPE_ABANDONED;
break;
}
parent_types++;
if (parent_types >= end) {
return METACOMMIT_TYPE_NONE;
}
}
content_parent = get_commit_by_index(commit->parents, index);
if (!content_parent) {
return METACOMMIT_TYPE_NONE;
}
oidcpy(content, &(content_parent->object.oid));
return ret;
}
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