notes.c

   1 #include "cache.h"
   2 #include "commit.h"
   3 #include "notes.h"
   4 #include "refs.h"
   5 #include "utf8.h"
   6 #include "strbuf.h"
   7
   8 static int initialized;
   9
  10 void get_commit_notes(const struct commit *commit, struct strbuf *sb,
  11                 const char *output_encoding)
  12 {
  13         static const char *utf8 = "utf-8";
  14         struct strbuf name = STRBUF_INIT;
  15         const char *hex;
  16         unsigned char sha1[20];
  17         char *msg;
  18         unsigned long msgoffset, msglen;
  19         enum object_type type;
  20
  21         if (!initialized) {
  22                 const char *env = getenv(GIT_NOTES_REF_ENVIRONMENT);
  23                 if (env)
  24                         notes_ref_name = getenv(GIT_NOTES_REF_ENVIRONMENT);
  25                 else if (!notes_ref_name)
  26                         notes_ref_name = GIT_NOTES_DEFAULT_REF;
  27                 if (notes_ref_name && read_ref(notes_ref_name, sha1))
  28                         notes_ref_name = NULL;
  29                 initialized = 1;
  30         }
  31
  32         if (!notes_ref_name)
  33                 return;
  34
  35         strbuf_addf(&name, "%s:%s", notes_ref_name,
  36                         sha1_to_hex(commit->object.sha1));
  37         if (get_sha1(name.buf, sha1))
  38                 return;
  39
  40         if (!(msg = read_sha1_file(sha1, &type, &msglen)) || !msglen ||
  41                         type != OBJ_BLOB)
  42                 return;
  43
  44         if (output_encoding && *output_encoding &&
  45                         strcmp(utf8, output_encoding)) {
  46                 char *reencoded = reencode_string(msg, output_encoding, utf8);
  47                 if (reencoded) {
  48                         free(msg);
  49                         msg = reencoded;
  50                         msglen = strlen(msg);
  51                 }
  52         }
  53
  54         /* we will end the annotation by a newline anyway */
  55         if (msglen && msg[msglen - 1] == '\n')
  56                 msglen--;
  57
  58         strbuf_addstr(sb, "\nNotes:\n");
  59
  60         for (msgoffset = 0; msgoffset < msglen;) {
  61                 int linelen = strchrnul(msg, '\n') - msg;
  62
  63                 strbuf_addstr(sb, "    ");
  64                 strbuf_add(sb, msg + msgoffset, linelen);
  65                 msgoffset += linelen;
  66         }
  67         free(msg);
  68 }