for-each-ref: refactor subject and body placeholder parsing

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 89e75c6894e6fdb2abbe464d825f5c7186a14141..bcea0276f3ed8095082c359e02e5952266be953d 100644 (file)
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -458,38 +458,42 @@ static void grab_person(const char *who, struct atom_value *val, int deref, stru
        }
 }
 
-static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
+static void find_subpos(const char *buf, unsigned long sz,
+                       const char **sub, unsigned long *sublen,
+                       const char **body, unsigned long *bodylen)
 {
-       while (*buf) {
-               const char *eol = strchr(buf, '\n');
-               if (!eol)
-                       return;
-               if (eol[1] == '\n') {
-                       buf = eol + 1;
-                       break; /* found end of header */
-               }
-               buf = eol + 1;
+       const char *eol;
+       /* skip past header until we hit empty line */
+       while (*buf && *buf != '\n') {
+               eol = strchrnul(buf, '\n');
+               if (*eol)
+                       eol++;
+               buf = eol;
        }
+       /* skip any empty lines */
        while (*buf == '\n')
                buf++;
-       if (!*buf)
-               return;
-       *sub = buf; /* first non-empty line */
-       buf = strchr(buf, '\n');
-       if (!buf) {
-               *body = "";
-               return; /* no body */
-       }
+
+       /* subject is first non-empty line */
+       *sub = buf;
+       /* subject goes to end of line */
+       eol = strchrnul(buf, '\n');
+       *sublen = eol - buf;
+       buf = eol;
+
+       /* skip any empty lines */
        while (*buf == '\n')
-               buf++; /* skip blank between subject and body */
+               buf++;
        *body = buf;
+       *bodylen = strlen(buf);
 }
 
 /* See grab_values */
 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
 {
        int i;
-       const char *subpos = NULL, *bodypos = NULL;
+       const char *subpos = NULL, *bodypos;
+       unsigned long sublen, bodylen;
 
        for (i = 0; i < used_atom_cnt; i++) {
                const char *name = used_atom[i];
@@ -503,14 +507,14 @@ static void grab_sub_body_contents(struct atom_value *val, int deref, struct obj
                    strcmp(name, "contents"))
                        continue;
                if (!subpos)
-                       find_subpos(buf, sz, &subpos, &bodypos);
-               if (!subpos)
-                       return;
+                       find_subpos(buf, sz,
+                                   &subpos, &sublen,
+                                   &bodypos, &bodylen);
 
                if (!strcmp(name, "subject"))
-                       v->s = copy_line(subpos);
+                       v->s = xmemdupz(subpos, sublen);
                else if (!strcmp(name, "body"))
-                       v->s = xstrdup(bodypos);
+                       v->s = xmemdupz(bodypos, bodylen);
                else if (!strcmp(name, "contents"))
                        v->s = xstrdup(subpos);
        }