Squashed 'gitstatus/' changes from 845f492f..2ecd9907

2ecd9907 add logging to debug https://github.com/romkatv/powerlevel10k/issues/1477
74010456 add a TODO to fix #254
864f1caf Trim '\w' part of bash prompt. (#253)

git-subtree-dir: gitstatus
git-subtree-split: 2ecd990706255d2000fedbde3b2d2353f63d69a1

build

@@ -275,7 +275,14 @@ if [ ! -e "$libgit2_tarball" ]; then
       fi
     fi
     libgit2_url=https://github.com/romkatv/libgit2/archive/"$libgit2_version".tar.gz
-    command wget -O "$libgit2_tmp" -- "$libgit2_url"
+    if ! command wget -O "$libgit2_tmp" -- "$libgit2_url"; then
+      command which wget
+      command ls -lAd -- "$outdir"
+      command ls -lA -- "$outdir"
+      command ls -lAd -- "$outdir"/deps
+      command ls -lA -- "$outdir"/deps
+      exit 1
+    fi
     command mv -f -- "$libgit2_tmp" "$libgit2_tarball"
   else
     >&2 echo "[error] file not found: deps/libgit2-"$libgit2_version".tar.gz"

gitstatus.prompt.sh

@@ -86,6 +86,7 @@ gitstatus_stop && gitstatus_start -s -1 -u -1 -c -1 -d -1
 
 # On every prompt, fetch git status and set GITSTATUS_PROMPT.
 PROMPT_COMMAND=gitstatus_prompt_update
+PROMPT_DIRTRIM=3
 
 # Enable promptvars so that ${GITSTATUS_PROMPT} in PS1 is expanded.
 shopt -s promptvars

src/dir.cc

@@ -106,14 +106,14 @@ bool ListDir(int dir_fd, Arena& arena, std::vector<char*>& entries, bool precomp
   };
 
   constexpr size_t kBufSize = 8 << 10;
-  entries.clear();
+  const size_t orig_size = entries.size();
 
   while (true) {
     char* buf = static_cast<char*>(arena.Allocate(kBufSize, alignof(linux_dirent64)));
     // Save 256 bytes for the rainy day.
     int n = syscall(SYS_getdents64, dir_fd, buf, kBufSize - 256);
     if (n < 0) {
-      entries.clear();
+      entries.resize(orig_size);
       return false;
     }
     for (int pos = 0; pos < n;) {
@@ -131,9 +131,9 @@ bool ListDir(int dir_fd, Arena& arena, std::vector<char*>& entries, bool precomp
   }
 
   if (case_sensitive) {
-    SortEntries<true>(entries.data(), entries.data() + entries.size());
+    SortEntries<true>(entries.data() + orig_size, entries.data() + entries.size());
   } else {
-    SortEntries<false>(entries.data(), entries.data() + entries.size());
+    SortEntries<false>(entries.data() + orig_size, entries.data() + entries.size());
   }
 
   return true;
@@ -211,7 +211,7 @@ char* DirenvConvert(Arena& arena, struct dirent& ent, bool do_convert) {
 
 bool ListDir(int dir_fd, Arena& arena, std::vector<char*>& entries, bool precompose_unicode,
              bool case_sensitive) {
-  entries.clear();
+  const size_t orig_size = entries.size();
   dir_fd = dup(dir_fd);
   if (dir_fd < 0) return false;
   DIR* dir = fdopendir(dir_fd);
@@ -225,10 +225,10 @@ bool ListDir(int dir_fd, Arena& arena, std::vector<char*>& entries, bool precomp
     entries.push_back(DirenvConvert(arena, *ent, precompose_unicode));
   }
   if (errno) {
-    entries.clear();
+    entries.resize(orig_size);
     return false;
   }
-  StrSort(entries.data(), entries.data() + entries.size(), case_sensitive);
+  StrSort(entries.data() + orig_size, entries.data() + entries.size(), case_sensitive);
   return true;
 }
 

src/dir.h

@@ -25,11 +25,11 @@
 
 namespace gitstatus {
 
-// On error, clears entries and returns false. Does not throw.
+// On error, leaves entries unchaged and returns false. Does not throw.
 //
-// On success, fills entries with the names of files from the specified directory and returns true.
+// On success, appends names of files from the specified directory to entries and returns true.
-// Every entry is a null-terminated string. At -1 offset is its d_type. All elements point into the
+// Every appended entry is a null-terminated string. At -1 offset is its d_type. All elements
-// arena. They are sorted either by strcmp or strcasecmp depending on case_sensitive.
+// point into the arena. They are sorted either by strcmp or strcasecmp depending on case_sensitive.
 //
 // Does not close dir_fd.
 //

src/index.cc

@@ -242,6 +242,7 @@ std::vector<const char*> ScanDirs(git_index* index, int root_fd, IndexDir* const
       dir.st = st;
     }
 
+    entries.clear();
     arena.Reuse();
     if (!ListDir(*dir_fd, arena, entries, caps.precompose_unicode, caps.case_sensitive)) {
       AddUnmached("");

src/tag_db.cc

@@ -155,6 +155,8 @@ void TagDb::ReadLooseTags() {
   int dir_fd = open(dirname.c_str(), O_RDONLY | O_DIRECTORY | O_CLOEXEC);
   if (dir_fd < 0) return;
   ON_SCOPE_EXIT(&) { CHECK(!close(dir_fd)) << Errno(); };
+  // TODO: recursively traverse directories so that the file refs/tags/foo/bar gets interpreted
+  // as the tag foo/bar. See https://github.com/romkatv/gitstatus/issues/254.
   (void)ListDir(dir_fd, loose_arena_, loose_tags_, /* precompose_unicode = */ false,
                 /* case_sensitive = */ true);
 }