Add a common commit parser

Make a better commit parser, replacing the ugly one in ui-log.c

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/parsing.c b/parsing.c
index 98b3243..6cab0e9 100644
--- a/parsing.c
+++ b/parsing.c
@@ -104,3 +104,56 @@ int cgit_parse_query(char *txt, configfn fn)
                 (*fn)(txt, value);
         return 0;
 }
+
+char *substr(const char *head, const char *tail)
+{
+        char *buf;
+
+        buf = xmalloc(tail - head + 1);
+        strncpy(buf, head, tail - head);
+        buf[tail - head] = '\0';
+        return buf;
+}
+
+struct commitinfo *cgit_parse_commit(struct commit *commit)
+{
+        struct commitinfo *ret;
+        char *p = commit->buffer, *t = commit->buffer;
+
+        ret = xmalloc(sizeof(*ret));
+        ret->commit = commit;
+
+        if (strncmp(p, "tree ", 5))
+                die("Bad commit: %s", sha1_to_hex(commit->object.sha1));
+        else
+                p += 46; // "tree " + hex[40] + "\n"
+
+        while (!strncmp(p, "parent ", 7))
+                p += 48; // "parent " + hex[40] + "\n"
+
+        if (!strncmp(p, "author ", 7)) {
+                p += 7;
+                t = strchr(p, '<') - 1;
+                ret->author = substr(p, t);
+                p = strchr(p, '\n') + 1;
+        }
+
+        if (!strncmp(p, "committer ", 9)) {
+                p += 9;
+                t = strchr(p, '<') - 1;
+                ret->committer = substr(p, t);
+                p = strchr(p, '\n') + 1;
+        }
+
+        while (*p == '\n')
+                p = strchr(p, '\n') + 1;
+
+        t = strchr(p, '\n');
+        ret->subject = substr(p, t);
+
+        while (*p == '\n')
+                p = strchr(p, '\n') + 1;
+        ret->msg = p;
+
+        return ret;
+}