compat/poll: sleep 1 millisecond to avoid busy wait

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 883d383201b7a67b36875ffe4b74b190a6492ae2..51798b48b54266fccd2f7b4687646d152ab70588 100644 (file)
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -9,6 +9,7 @@
 #include "quote.h"
 #include "parse-options.h"
 #include "remote.h"
+#include "color.h"
 
 /* Quoting styles */
 #define QUOTE_NONE 0
@@ -75,6 +76,8 @@ static struct {
        { "upstream" },
        { "symref" },
        { "flag" },
+       { "HEAD" },
+       { "color" },
 };
 
 /*
@@ -89,7 +92,8 @@ static struct {
  */
 static const char **used_atom;
 static cmp_type *used_atom_type;
-static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
+static int used_atom_cnt, need_tagged, need_symref;
+static int need_color_reset_at_eol;
 
 /*
  * Used to parse format string and sort specifiers
@@ -176,13 +180,21 @@ static const char *find_next(const char *cp)
 static int verify_format(const char *format)
 {
        const char *cp, *sp;
+       static const char color_reset[] = "color:reset";
+
+       need_color_reset_at_eol = 0;
        for (cp = format; *cp && (sp = find_next(cp)); ) {
                const char *ep = strchr(sp, ')');
+               int at;
+
                if (!ep)
                        return error("malformed format string %s", sp);
                /* sp points at "%(" and ep points at the closing ")" */
-               parse_atom(sp + 2, ep);
+               at = parse_atom(sp + 2, ep);
                cp = ep + 1;
+
+               if (!memcmp(used_atom[at], "color:", 6))
+                       need_color_reset_at_eol = !!strcmp(used_atom[at], color_reset);
        }
        return 0;
 }
@@ -649,6 +661,7 @@ static void populate_value(struct refinfo *ref)
                int deref = 0;
                const char *refname;
                const char *formatp;
+               struct branch *branch = NULL;
 
                if (*name == '*') {
                        deref = 1;
@@ -660,7 +673,6 @@ static void populate_value(struct refinfo *ref)
                else if (starts_with(name, "symref"))
                        refname = ref->symref ? ref->symref : "";
                else if (starts_with(name, "upstream")) {
-                       struct branch *branch;
                        /* only local branches may have an upstream */
                        if (!starts_with(ref->refname, "refs/heads/"))
                                continue;
@@ -670,8 +682,13 @@ static void populate_value(struct refinfo *ref)
                            !branch->merge[0]->dst)
                                continue;
                        refname = branch->merge[0]->dst;
-               }
-               else if (!strcmp(name, "flag")) {
+               } else if (starts_with(name, "color:")) {
+                       char color[COLOR_MAXLEN] = "";
+
+                       color_parse(name + 6, "--format", color);
+                       v->s = xstrdup(color);
+                       continue;
+               } else if (!strcmp(name, "flag")) {
                        char buf[256], *cp = buf;
                        if (ref->flag & REF_ISSYMREF)
                                cp = copy_advance(cp, ",symref");
@@ -684,20 +701,62 @@ static void populate_value(struct refinfo *ref)
                                v->s = xstrdup(buf + 1);
                        }
                        continue;
-               }
-               else if (!deref && grab_objectname(name, ref->objectname, v))
+               } else if (!deref && grab_objectname(name, ref->objectname, v)) {
                        continue;
-               else
+               } else if (!strcmp(name, "HEAD")) {
+                       const char *head;
+                       unsigned char sha1[20];
+
+                       head = resolve_ref_unsafe("HEAD", sha1, 1, NULL);
+                       if (!strcmp(ref->refname, head))
+                               v->s = "*";
+                       else
+                               v->s = " ";
+                       continue;
+               } else
                        continue;
 
                formatp = strchr(name, ':');
-               /* look for "short" refname format */
                if (formatp) {
+                       int num_ours, num_theirs;
+
                        formatp++;
                        if (!strcmp(formatp, "short"))
                                refname = shorten_unambiguous_ref(refname,
                                                      warn_ambiguous_refs);
-                       else
+                       else if (!strcmp(formatp, "track") &&
+                                starts_with(name, "upstream")) {
+                               char buf[40];
+
+                               stat_tracking_info(branch, &num_ours, &num_theirs);
+                               if (!num_ours && !num_theirs)
+                                       v->s = "";
+                               else if (!num_ours) {
+                                       sprintf(buf, "[behind %d]", num_theirs);
+                                       v->s = xstrdup(buf);
+                               } else if (!num_theirs) {
+                                       sprintf(buf, "[ahead %d]", num_ours);
+                                       v->s = xstrdup(buf);
+                               } else {
+                                       sprintf(buf, "[ahead %d, behind %d]",
+                                               num_ours, num_theirs);
+                                       v->s = xstrdup(buf);
+                               }
+                               continue;
+                       } else if (!strcmp(formatp, "trackshort") &&
+                                  starts_with(name, "upstream")) {
+                               assert(branch);
+                               stat_tracking_info(branch, &num_ours, &num_theirs);
+                               if (!num_ours && !num_theirs)
+                                       v->s = "=";
+                               else if (!num_ours)
+                                       v->s = "<";
+                               else if (!num_theirs)
+                                       v->s = ">";
+                               else
+                                       v->s = "<>";
+                               continue;
+                       } else
                                die("unknown %.*s format %s",
                                    (int)(formatp - name), name, formatp);
                }
@@ -875,11 +934,9 @@ static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs
        qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
 }
 
-static void print_value(struct refinfo *ref, int atom, int quote_style)
+static void print_value(struct atom_value *v, int quote_style)
 {
-       struct atom_value *v;
        struct strbuf sb = STRBUF_INIT;
-       get_value(ref, atom, &v);
        switch (quote_style) {
        case QUOTE_NONE:
                fputs(v->s, stdout);
@@ -946,15 +1003,26 @@ static void show_ref(struct refinfo *info, const char *format, int quote_style)
        const char *cp, *sp, *ep;
 
        for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
+               struct atom_value *atomv;
+
                ep = strchr(sp, ')');
                if (cp < sp)
                        emit(cp, sp);
-               print_value(info, parse_atom(sp + 2, ep), quote_style);
+               get_value(info, parse_atom(sp + 2, ep), &atomv);
+               print_value(atomv, quote_style);
        }
        if (*cp) {
                sp = cp + strlen(cp);
                emit(cp, sp);
        }
+       if (need_color_reset_at_eol) {
+               struct atom_value resetv;
+               char color[COLOR_MAXLEN] = "";
+
+               color_parse("reset", "--format", color);
+               resetv.s = color;
+               print_value(&resetv, quote_style);
+       }
        putchar('\n');
 }
 
@@ -1037,7 +1105,6 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 
        if (!sort)
                sort = default_sort();
-       sort_atom_limit = used_atom_cnt;
 
        /* for warn_ambiguous_refs */
        git_config(git_default_config, NULL);