Makefile: installing git in cygwin 1.7.0
[gitweb.git] / builtin-for-each-ref.c
index e46b7adc9719e147536398e8e365d6d3e65a4ba7..91e8f95fd20215cae72e206a691370c71dbc575e 100644 (file)
@@ -8,6 +8,7 @@
 #include "blob.h"
 #include "quote.h"
 #include "parse-options.h"
+#include "remote.h"
 
 /* Quoting styles */
 #define QUOTE_NONE 0
@@ -66,6 +67,7 @@ static struct {
        { "subject" },
        { "body" },
        { "contents" },
+       { "upstream" },
 };
 
 /*
@@ -543,109 +545,6 @@ static void grab_values(struct atom_value *val, int deref, struct object *obj, v
        }
 }
 
-/*
- * generate a format suitable for scanf from a ref_rev_parse_rules
- * rule, that is replace the "%.*s" spec with a "%s" spec
- */
-static void gen_scanf_fmt(char *scanf_fmt, const char *rule)
-{
-       char *spec;
-
-       spec = strstr(rule, "%.*s");
-       if (!spec || strstr(spec + 4, "%.*s"))
-               die("invalid rule in ref_rev_parse_rules: %s", rule);
-
-       /* copy all until spec */
-       strncpy(scanf_fmt, rule, spec - rule);
-       scanf_fmt[spec - rule] = '\0';
-       /* copy new spec */
-       strcat(scanf_fmt, "%s");
-       /* copy remaining rule */
-       strcat(scanf_fmt, spec + 4);
-
-       return;
-}
-
-/*
- * Shorten the refname to an non-ambiguous form
- */
-static char *get_short_ref(struct refinfo *ref)
-{
-       int i;
-       static char **scanf_fmts;
-       static int nr_rules;
-       char *short_name;
-
-       /* pre generate scanf formats from ref_rev_parse_rules[] */
-       if (!nr_rules) {
-               size_t total_len = 0;
-
-               /* the rule list is NULL terminated, count them first */
-               for (; ref_rev_parse_rules[nr_rules]; nr_rules++)
-                       /* no +1 because strlen("%s") < strlen("%.*s") */
-                       total_len += strlen(ref_rev_parse_rules[nr_rules]);
-
-               scanf_fmts = xmalloc(nr_rules * sizeof(char *) + total_len);
-
-               total_len = 0;
-               for (i = 0; i < nr_rules; i++) {
-                       scanf_fmts[i] = (char *)&scanf_fmts[nr_rules]
-                                       + total_len;
-                       gen_scanf_fmt(scanf_fmts[i], ref_rev_parse_rules[i]);
-                       total_len += strlen(ref_rev_parse_rules[i]);
-               }
-       }
-
-       /* bail out if there are no rules */
-       if (!nr_rules)
-               return ref->refname;
-
-       /* buffer for scanf result, at most ref->refname must fit */
-       short_name = xstrdup(ref->refname);
-
-       /* skip first rule, it will always match */
-       for (i = nr_rules - 1; i > 0 ; --i) {
-               int j;
-               int short_name_len;
-
-               if (1 != sscanf(ref->refname, scanf_fmts[i], short_name))
-                       continue;
-
-               short_name_len = strlen(short_name);
-
-               /*
-                * check if the short name resolves to a valid ref,
-                * but use only rules prior to the matched one
-                */
-               for (j = 0; j < i; j++) {
-                       const char *rule = ref_rev_parse_rules[j];
-                       unsigned char short_objectname[20];
-                       char refname[PATH_MAX];
-
-                       /*
-                        * the short name is ambiguous, if it resolves
-                        * (with this previous rule) to a valid ref
-                        * read_ref() returns 0 on success
-                        */
-                       mksnpath(refname, sizeof(refname),
-                                rule, short_name_len, short_name);
-                       if (!read_ref(refname, short_objectname))
-                               break;
-               }
-
-               /*
-                * short name is non-ambiguous if all previous rules
-                * haven't resolved to a valid ref
-                */
-               if (j == i)
-                       return short_name;
-       }
-
-       free(short_name);
-       return ref->refname;
-}
-
-
 /*
  * Parse the object referred by ref, and grab needed value.
  */
@@ -672,32 +571,50 @@ static void populate_value(struct refinfo *ref)
                const char *name = used_atom[i];
                struct atom_value *v = &ref->value[i];
                int deref = 0;
+               const char *refname;
+               const char *formatp;
+
                if (*name == '*') {
                        deref = 1;
                        name++;
                }
-               if (!prefixcmp(name, "refname")) {
-                       const char *formatp = strchr(name, ':');
-                       const char *refname = ref->refname;
-
-                       /* look for "short" refname format */
-                       if (formatp) {
-                               formatp++;
-                               if (!strcmp(formatp, "short"))
-                                       refname = get_short_ref(ref);
-                               else
-                                       die("unknown refname format %s",
-                                           formatp);
-                       }
 
-                       if (!deref)
-                               v->s = refname;
-                       else {
-                               int len = strlen(refname);
-                               char *s = xmalloc(len + 4);
-                               sprintf(s, "%s^{}", refname);
-                               v->s = s;
-                       }
+               if (!prefixcmp(name, "refname"))
+                       refname = ref->refname;
+               else if(!prefixcmp(name, "upstream")) {
+                       struct branch *branch;
+                       /* only local branches may have an upstream */
+                       if (prefixcmp(ref->refname, "refs/heads/"))
+                               continue;
+                       branch = branch_get(ref->refname + 11);
+
+                       if (!branch || !branch->merge || !branch->merge[0] ||
+                           !branch->merge[0]->dst)
+                               continue;
+                       refname = branch->merge[0]->dst;
+               }
+               else
+                       continue;
+
+               formatp = strchr(name, ':');
+               /* look for "short" refname format */
+               if (formatp) {
+                       formatp++;
+                       if (!strcmp(formatp, "short"))
+                               refname = shorten_unambiguous_ref(refname,
+                                                     warn_ambiguous_refs);
+                       else
+                               die("unknown %.*s format %s",
+                                   (int)(formatp - name), name, formatp);
+               }
+
+               if (!deref)
+                       v->s = refname;
+               else {
+                       int len = strlen(refname);
+                       char *s = xmalloc(len + 4);
+                       sprintf(s, "%s^{}", refname);
+                       v->s = s;
                }
        }
 
@@ -943,7 +860,6 @@ static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
                return -1;
 
        *sort_tail = s = xcalloc(1, sizeof(*s));
-       sort_tail = &s->next;
 
        if (*arg == '-') {
                s->reverse = 1;
@@ -1002,6 +918,9 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
                sort = default_sort();
        sort_atom_limit = used_atom_cnt;
 
+       /* for warn_ambiguous_refs */
+       git_config(git_default_config, NULL);
+
        memset(&cbdata, 0, sizeof(cbdata));
        cbdata.grab_pattern = argv;
        for_each_ref(grab_single_ref, &cbdata);